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Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2013	Feb. 19, 2014	Jun. 30, 2013
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Entity Registrant Name	MKS INSTRUMENTS INC
Entity Central Index Key	0001049502
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		53,389,633
Entity Public Float			$ 1,410,691,554

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 288,902	$ 287,588
Short-term investments	300,715	327,653
Trade accounts receivable, net of allowances of $2,751 and $2,879 at December 31, 2013 and 2012, respectively	116,744	82,060
Inventories	142,727	134,639
Deferred income taxes	13,428	8,194
Other current assets	16,715	28,048
Total current assets	879,231	868,182
Property, plant and equipment, net	77,536	80,516
Long-term investments	60,405	12,158
Goodwill	150,909	150,733
Intangible assets, net	13,090	11,561
Other assets	31,847	29,412
Total assets	1,213,018	1,152,562
Current liabilities:
Accounts payable	40,074	16,803
Accrued compensation	43,662	20,955
Income taxes payable	10,444	4,148
Other current liabilities	34,242	37,405
Total current liabilities	128,422	79,311
Other liabilities	63,073	61,095
Commitments and contingencies (Note 23)
Stockholders' equity:
Preferred Stock, $0.01 par value, 2,000,000 shares authorized; none issued and outstanding
Common Stock, no par value, 200,000,000 shares authorized; 53,363,450 and 52,748,849 shares issued and outstanding at December 31, 2013 and 2012, respectively	113	113
Additional paid-in capital	730,571	718,005
Retained earnings	278,966	278,583
Accumulated other comprehensive income	11,873	15,455
Total stockholders' equity	1,021,523	1,012,156
Total liabilities and stockholders' equity	$ 1,213,018	$ 1,152,562

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Allowances for trade accounts receivable	$ 2,751	$ 2,879
Preferred Stock, par value	$ 0.01	$ 0.01
Preferred Stock, shares authorized	2,000,000	2,000,000
Preferred Stock, shares issued	0	0
Preferred Stock, shares outstanding	0	0
Common Stock, par value	$ 0	$ 0
Common Stock, shares authorized	200,000,000	200,000,000
Common Stock, shares issued	53,363,450	52,748,849
Common Stock, shares outstanding	53,363,450	52,748,849

Consolidated Statements of Operations and Comprehensive Income - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Net Revenues:

Products

$ 568,317

$ 536,774

$ 719,002

Services

101,103

106,734

103,515

Total net revenues

669,420

643,508

822,517

Cost of revenues:

Cost of products

337,464

310,485

387,445

Cost of service

65,382

63,544

60,084

Total cost of revenues

402,846

374,029

447,529

Gross profit

266,574

269,479

374,988

Research and development

63,570

60,118

61,033

Selling, general and administrative

142,014

127,185

128,015

Litigation

5,316

Insurance reimbursement

(1,071)

Completed acquisition costs

171

1,258

Restructuring

1,364

343

Amortization of acquired intangible assets

2,139

1,036

1,015

Income from operations

58,387

74,223

184,925

Interest income

999

1,059

1,159

Interest expense

146

Income before income taxes

59,301

75,136

186,052

Provision for income taxes

23,525

27,107

56,321

Net income

35,776

48,029

129,731

Other comprehensive income:

Changes in value of financial instruments designated as cash flow hedges, net of tax expense (1)

^[1]

150

1,570

Foreign currency translation adjustments, net of tax of $0 for 2013, 2012 and 2011

(3,604)

1,664

129

Unrealized (loss) gain on investments, net of tax (benefit) expense (2)

^[2]

(40)

133

Total comprehensive income

$ 32,194

$ 49,874

$ 131,563

Net income per share:

Basic

$ 0.67

$ 0.91

$ 2.49

Diluted

0.67

0.90

2.45

Cash dividends paid per common share

$ 0.64

$ 0.62

$ 0.60

Weighted average common shares outstanding:

Basic

53,061,000

52,686,000

52,169,000

Diluted

53,481,000

53,234,000

52,847,000

[1]	Tax expense was $551, $88 and $937 for the years ended December 31, 2013, 2012 and 2011, respectively.
[2]	Tax (benefit) expense was $(355), $19 and $79 for the years ended December 31, 2013, 2012, and 2011, respectively.

Consolidated Statements of Operations and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]
Tax expense (benefit) on changes in value of financial instruments designated as cash flow hedges	$ 551	$ 88	$ 937
Tax on foreign currency translation adjustments	0	0	0
Tax (benefit) expense on unrealized (loss) gain on investments	$ (355)	$ 19	$ 79

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Beginning Balance at Dec. 31, 2010	$ 847,039	$ 113	$ 663,792	$ 171,356	$ 11,778
Beginning Balance, Shares at Dec. 31, 2010		50,648,601
Net issuance under stock-based plans	28,546		28,546
Net issuance under stock-based plans, Shares		1,929,135
Stock-based compensation	11,225		11,225
Tax effect from stock-based plans	5,019		5,019
Stock repurchase	(2,007)		(1,163)	(844)
Stock repurchase, Shares		(85,788)
Cash dividend	(31,373)			(31,373)
Comprehensive income (net of tax):
Net income	129,731			129,731
Other comprehensive income	1,832				1,832
Ending Balance at Dec. 31, 2011	990,012	$ 113	707,419	268,870	13,610
Ending Balance, Shares at Dec. 31, 2011		52,491,948
Net issuance under stock-based plans	1,564		1,564
Net issuance under stock-based plans, Shares		691,501
Stock-based compensation	13,031		13,031
Tax effect from stock-based plans	1,862		1,862
Stock repurchase	$ (11,501)		(5,871)	(5,630)
Stock repurchase, Shares	(434,600)	(434,600)
Cash dividend	$ (32,686)			(32,686)
Comprehensive income (net of tax):
Net income	48,029			48,029
Other comprehensive income	1,845				1,845
Ending Balance at Dec. 31, 2012	1,012,156	$ 113	718,005	278,583	15,455
Ending Balance, Shares at Dec. 31, 2012		52,748,849
Net issuance under stock-based plans	(464)		(464)
Net issuance under stock-based plans, Shares		721,601
Stock-based compensation	13,992		13,992
Tax effect from stock-based plans	495		495
Stock repurchase	$ (2,875)		(1,457)	(1,418)
Stock repurchase, Shares	(107,000)	(107,000)
Cash dividend	$ (33,975)			(33,975)
Comprehensive income (net of tax):
Net income	35,776			35,776
Other comprehensive income	(3,582)				(3,582)
Ending Balance at Dec. 31, 2013	$ 1,021,523	$ 113	$ 730,571	$ 278,966	$ 11,873
Ending Balance, Shares at Dec. 31, 2013		53,363,450

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income	$ 35,776	$ 48,029	$ 129,731
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,102	14,442	12,980
Stock-based compensation	13,992	13,031	11,225
Provision for excess and obsolete inventory	21,671	15,028	14,857
Provision for doubtful accounts	631	888	449
Deferred income taxes	(3,089)	3,819	7,549
Excess tax benefits from stock-based compensation	(935)	(2,105)	(5,338)
Other	200	41	118
Changes in operating assets and liabilities:
Trade accounts receivable	(36,153)	38,288	17,923
Inventories	(29,797)	5,341	(11,697)
Income taxes	27,237	(3,126)	(5,345)
Other current and non-current assets	(1,441)	7,689	(7,674)
Accrued compensation and other liabilities	7,721	4,083	2,904
Accounts payable	23,172	(8,281)	(11,646)
Net cash provided by operating activities	76,087	137,167	156,036
Cash flows from investing activities:
Acquisition of business, net of cash acquired	(2,326)	(22,607)
Purchases of investments	(550,076)	(435,961)	(475,777)
Maturities of investments	417,566	313,298	385,613
Sales of investments	110,928	46,559	100,094
Purchases of property, plant and equipment	(12,410)	(17,705)	(15,567)
Other	(216)	(1,451)	(441)
Net cash used in investing activities	(36,534)	(117,867)	(6,078)
Cash flows from financing activities:
Proceeds from short-term borrowings	6	2,896	41,802
Payments on short-term borrowings	(776)	(9,348)	(39,915)
Repurchases of common stock	(2,875)	(11,501)	(2,007)
Net proceeds related to employee stock awards	(464)	1,564	28,546
Dividend payments	(33,975)	(32,686)	(31,373)
Excess tax benefit from stock-based compensation	935	2,105	5,338
Net cash (used in) provided by financing activities	(37,149)	(46,970)	2,391
Effect of exchange rate changes on cash and cash equivalents	(1,090)	2,342	(1,909)
Increase (decrease) in cash and cash equivalents	1,314	(25,328)	150,440
Cash and cash equivalents at beginning of year	287,588	312,916	162,476
Cash and cash equivalents at end of year	288,902	287,588	312,916
Cash paid during the period for:
Interest	60	212	19
Income taxes	$ 5,974	$ 18,033	$ 52,561

Business Description

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Business Description

1)	Business Description

MKS Instruments, Inc. (“MKS” or the “Company”) was founded in 1961 and is a global provider of instruments, subsystems and process control solutions that measure, control, power, monitor and analyze critical parameters of advanced manufacturing processes to improve process performance and productivity of advanced manufacturing processes. MKS groups its products into four product groups based upon the similarity of the product function, type of product and manufacturing processes. These four groups of products are: Instruments and Control Products, Power and Reactive Gas Products, Vacuum Products and Analytical Solutions Group Products. MKS’ products are derived from its core competencies in pressure measurement and control, materials delivery, gas composition analysis, control and information technology, power and reactive gas generation and vacuum technology.

The Company has four reportable segments: Advanced Manufacturing Capital Equipment, Analytical Solutions Group, Europe Region Sales & Service, and Asia Region Sales & Service.

Basis of Presentation

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Basis of Presentation

2)	Basis of Presentation

The consolidated financial statements include the accounts of MKS Instruments, Inc. and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.

Use of Estimates

The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The preparation of these financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an on-going basis, management evaluates its estimates and judgments, including those related to revenue recognition and allowance for doubtful accounts, inventory, warranty costs, stock-based compensation, intangible assets, goodwill, other long-lived assets, in process research and development and other acquisition expenses and income taxes. Management bases its estimates and judgments on historical experience and on various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Revision of prior period financial statements

During the three months ended September 30, 2013, the Company identified a prior period error which affected the previous balance sheets of all interim periods in 2013 and all interim and annual periods in 2012 and 2011 and certain footnote disclosures for annual periods in 2012, 2011 and 2010. The Company previously reported the amounts of its uncertain tax positions on the balance sheets net instead of gross. The Company considered the guidance in Accounting Standards Codification (“ASC”) Topic 740-10-45, Other Presentation Matters and ASC Topic 210-20, Offsetting with respect to this matter. The error had no impact to the income statement, statements of cash flows or the statements of stockholders’ equity of any previously reported periods. In evaluating whether our previously issued consolidated financial statements were materially misstated, the Company considered the guidance in ASC Topic 250, Accounting Changes and Error Corrections, ASC Topic 250-10-S99-1, Assessing Materiality, and ASC Topic 250-10-S99-2, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements. The Company concluded this error was not material to the prior reporting periods, or to the 2013 results, and therefore, amendments of previously filed reports were not required. Accordingly, during the three months ended September 30, 2013, the Company recorded these prior period adjustments to correct this error. The revisions for these corrections to the applicable prior periods are reflected in the financial information herein and will be reflected in future filings containing such financial information.

The tables below reflect the revisions in the balance sheet line items for the periods ended December 31, 2012.


	December 31, 2012
	As previously reported		Adjustment		As revised
Other assets	$	11,692	$	17,720	$	29,412
Other liabilities	$	43,375	$	17,720	$	61,095

The tables below reflect the sections in certain footnotes that were affected by the revision for the periods ended December 31, 2012.


	December 31, 2012
Other Assets	As previously reported		Adjustment			As revised
Deferred tax assets, net	$	9,497	$	—		$	9,497
Long-term income tax receivable		—		17,720			17,720
Other		2,195		—			2,195

	$	11,692	$	17,720		$	29,412


	December 31, 2012
Other Liabilities	As previously reported		Adjustment			As revised
Long-term income tax payable	$	20,880	$	17,720		$	38,600
Accrued compensation		18,750		—			18,750
Other		3,745		—			3,745

	$	43,375	$	17,720		$	61,095


	December 31, 2012
Income Taxes	As previously reported		Adjustment			As revised
Current taxes:
United States	$	10,431	$	4,314		$	14,745
State		783		—			783
Foreign		12,074		(4,314	)		7,760

	$	23,288	$	—		$	23,288

	December 31, 2011
	As previously reported		Adjustment			As revised
Current taxes:
United States	$	25,824	$	15,032		$	40,856
State		2,602		—			2,602
Foreign		20,346		(15,032	)		5,314

	$	48,772	$	—		$	48,772

Segment Note

A reconciliation of segment assets to consolidated total assets is as follows:


	December 31, 2012
	As previously reported		Adjustment		As revised
Total segment assets	$	216,699	$	—	$	216,699
Cash and cash equivalents and investments		627,399		—		627,399
Other current assets		36,242		—		36,242
Property, plant and equipment, net		80,516		—		80,516
Goodwill and intangible assets, net		162,294		—		162,294
Other assets		11,692		17,720		29,412

Consolidated total assets	$	1,134,842	$	17,720	$	1,152,562

- Definition

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

+ References

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+ Details

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

3)	Summary of Significant Accounting Policies

Revenue Recognition and Accounts Receivable Allowances

Revenue from product sales is recorded upon transfer of title and risk of loss to the customer provided that there is evidence of an arrangement, the sales price is fixed or determinable, and collection of the related receivable is reasonably assured. In most transactions, the Company has no obligations to customers after the date products are shipped other than pursuant to warranty obligations. In some instances, the Company provides installation, training, support and services to customers after the product has been shipped. The Company does not frequently enter into arrangements with multiple deliverables however, for those revenue arrangements with multiple deliverables, the Company allocates revenue to each element based upon their relative selling price using vendor-specific objective evidence (“VSOE”), or third-party evidence (“TPE”) or based upon the relative selling price using estimated prices if VSOE or TPE does not exist. The Company then recognizes revenue on each deliverable in accordance with its policies for product and service revenue recognition. The Company provides for the estimated costs to fulfill customer warranty obligations upon the recognition of the related revenue. Shipping and handling fees, if any, billed to customers are recognized as revenue. The related shipping and handling costs are recognized in cost of sales. Accounts receivable allowances include sales returns and bad debt allowances. The Company monitors and tracks the amount of product returns and reduces revenue at the time of shipment for the estimated amount of such future returns, based on historical experience. The Company makes estimates evaluating its allowance for doubtful accounts. The Company continuously monitors collections and payments from its customers and maintains a provision for estimated credit losses based upon its historical experience and any specific customer collection issues that it has identified.

Research and Development

Research and development costs are expensed as incurred and consist mainly of compensation related expenses and project materials. The Company’s research and development efforts include numerous projects, which generally have a duration of 3 to 30 months. Acquired in-process research and development (“IPR&D”) expenses, which are capitalized at fair value as an intangible asset until the related project is completed, are then amortized over the estimated useful life of the product. The Company monitors projects and if they are abandoned, the Company immediately writes them off.

Advertising Costs

Advertising costs are expensed as incurred and were immaterial in 2013, 2012 and 2011.

Stock-Based Compensation

The accounting for share-based compensation expense requires the measurement and recognition of compensation expense for all share-based payment awards made to employees and directors based on estimated fair values. For restricted stock units (“RSUs”), the fair value is the fair value on the date of grant. The Company also provides employees the opportunity to purchase shares through an employee stock purchase plan. For shares issued under its employee stock purchase plan, the Company has estimated the fair value on the date of grant using the Black Scholes pricing model, which is affected by the Company’s stock price as well as assumptions regarding a number of complex and subjective variables. These variables include the Company’s expected stock price volatility over the term of the awards, expected life, risk free interest rate and expected dividends. The Company is also required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differ from those estimates.

Management determined that blended volatility, a combination of historical and implied volatility, is more reflective of market conditions and a better indicator of expected volatility than historical or implied volatility alone. The assumptions used in calculating the fair value of share-based payment awards represent management’s best estimates, but these estimates involve inherent uncertainties and the application of management judgment. As a result, if factors change and the Company uses different assumptions, its stock-based compensation expense could be materially different in the future.

Other Comprehensive Income

For foreign subsidiaries where the functional currency is the local currency, assets and liabilities are translated into U.S. dollars at the current exchange rate on the balance sheet date. Revenue and expenses are translated at average rates of exchange prevailing during the year. Translation adjustments resulting from this process are recorded to Other Comprehensive Income (“OCI”).

Unrealized gains and losses on securities classified as available-for-sale are included in accumulated other comprehensive income in consolidated stockholders’ equity.

For derivative instruments designated as cash-flow hedges, the effective portion of the derivative’s gain (loss) is initially reported as a component of OCI and is subsequently recognized in earnings when the hedged exposure is recognized in earnings.

Net Income Per Share

Basic net income per share is based on the weighted average number of common shares outstanding, and diluted net income per share is based on the weighted average number of common shares outstanding and all potential dilutive common equivalent shares outstanding. The dilutive effect of options is determined under the treasury stock method using the average market price for the period. Common equivalent shares are included in the per share calculations when the effect of their inclusion would be dilutive.

Cash and Cash Equivalents and Investments

All highly liquid investments with a maturity date of three months or less at the date of purchase are considered to be cash equivalents. The appropriate classification of investments in securities is determined at the time of purchase. Debt securities that the Company does not have the intent and ability to hold to maturity are classified as “available-for-sale” and are carried at fair value. Mutual funds that are bought and held principally for the purpose of selling them in the near term are classified as “trading” and are carried at fair value.

The Company reviews its investment portfolio on a monthly basis to identify and evaluate individual investments that have indications of possible impairment. The factors considered in determining whether a loss is other-than-temporary include: the length of time and extent to which fair market value has been below the cost basis, the financial condition and near-term prospects of the issuer, credit quality, and the Company’s ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in fair value.

Concentrations of Credit Risk

The Company’s significant concentrations of credit risk consist principally of cash and cash equivalents, investments, forward exchange contracts and trade accounts receivable. The Company maintains cash and cash equivalents with financial institutions including some banks with which it had borrowings. The Company maintains investments primarily in U.S. Treasury and government agency securities and corporate debt securities. The Company enters into forward currency contracts with high credit-quality financial institutions in order to minimize credit risk exposure. The Company’s customers are primarily concentrated in the semiconductor industry, and a limited number of customers account for a significant portion of the Company’s revenues. The Company regularly monitors the creditworthiness of its customers and believes it has adequately provided for potential credit loss exposures. Credit is extended for all customers based primarily on financial condition, and collateral is not required.

The Company had one customer comprising 17%, 14% and 14% of net sales for 2013, 2012 and 2011, respectively and another customer comprising 12%, 10% and 7% of net sales for 2013, 2012 and 2011. During the years 2013, 2012 and 2011, approximately 68%, 62% and 61% of the Company’s net sales, respectively, were to semiconductor capital equipment manufacturers and semiconductor device manufacturers. There were two customers comprising 10% or more of the Company’s accounts receivable balance as of December 31, 2013.

Inventories

Inventories are stated at the lower of cost or market, cost being determined using a standard costing system which approximates cost based on a first-in, first-out method. The Company regularly reviews inventory quantities on hand and records a provision to write-down excess and obsolete inventory to its estimated net realizable value, if less than cost, based primarily on its estimated forecast of product demand.

Property, Plant and Equipment

Property, plant and equipment are stated at cost. Expenditures for major renewals and betterments that extend the useful lives of property, plant and equipment are capitalized. Expenditures for maintenance and repairs are charged to expense as incurred. When assets are sold or otherwise disposed of, the cost and related accumulated depreciation are eliminated from the accounts and any resulting gain or loss is recognized in earnings.

Depreciation is provided on the straight-line method over the estimated useful lives of twenty to thirty-one and one-half years for buildings and three to seven years for machinery and equipment, furniture and fixtures and office equipment, which includes enterprise resource planning software. Leasehold improvements are amortized over the shorter of the lease term or the estimated useful life of the leased asset.

Intangible Assets

Intangible assets resulting from the acquisitions of businesses are estimated by management based on the fair value of assets acquired. These include acquired customer lists, technology, patents, trade names, covenants not to compete and IPR&D. Intangible assets are amortized from two to ten years on a straight-line basis which represents the estimated periods of benefit and the expected pattern of consumption.

Goodwill

Goodwill is the amount by which the cost of acquired net assets exceeded the fair value of those net assets on the date of acquisition. The Company allocates goodwill to reporting units at the time of acquisition or when there is a change in the reporting structure and bases that allocation on which reporting units will benefit from the acquired assets and liabilities. Reporting units are defined as operating segments or one level below an operating segment, referred to as a component. The Company assesses goodwill for impairment on an annual basis as of October 31 or more frequently when events and circumstances occur indicating that the recorded goodwill may be impaired.

The estimated fair value of the Company’s reporting units were based on discounted cash flow models derived from internal earnings and internal and external market forecasts. Determining fair value requires the exercise of significant judgment, including judgments about appropriate discount rates, perpetual growth rates and the amount and timing of expected future cash flows. Discount rates are based on a weighted average cost of capital (“WACC”), which represents the average rate a business must pay its providers of debt and equity. The WACC used to test goodwill is derived from a group of comparable companies. Assumptions in estimating future cash flows are subject to a high degree of judgment and complexity. The Company makes every effort to forecast these future cash flows as accurately as possible with the information available at the time the forecast is developed.

The Company has the option of first assessing qualitative factors to determine whether it is necessary to perform the current two-step impairment test or the Company can perform the two-step impairment test without performing the qualitative assessment. For the reporting units that did not experience any significant adverse changes in their business or reporting structures or any other adverse changes, and the reporting unit’s fair value substantially exceeded its amount from the prior year assessment, the Company performed the qualitative “Step 0” assessment. In performing the qualitative Step 0 assessment, the Company considered certain events and circumstances specific to the reporting unit and to the entity as a whole, such as macroeconomic conditions, industry and market considerations, overall financial performance and cost factors when evaluating whether it is more likely than not that the fair value of the reporting unit is less than its carrying amount. For the remaining reporting units that did not meet these criteria, the Company performed the two-step goodwill impairment test. Under the two-step goodwill impairment test, the Company compared the fair value of each reporting unit to its respective carrying amount, including goodwill. If the fair value of the reporting unit exceeds the fair value, the second step of the goodwill impairment test must be completed to measure the amount of impairment loss, if any. The second step compares the implied fair value of goodwill with the carrying value of goodwill. The implied fair value is determined by allocating the fair value of the reporting unit to all of the assets and liabilities of that unit, the excess of the fair value of the amounts assigned to its assets and liabilities it the implied fair value of goodwill. If the implied fair value of goodwill is less than the carrying amount of goodwill, an impairment loss is recognized equal to the difference.

As of October 31, 2013, the Company performed its annual impairment assessment of goodwill and determined that it is more likely than not that the fair values of the reporting units exceed their carrying amount.

Impairment of Long-Lived Assets

The Company evaluates the recoverability of its long-lived assets whenever events and changes in circumstances indicate that the carrying amount of an asset may not be fully recoverable. This periodic review may result in an adjustment of estimated depreciable lives or asset impairment. When indicators of impairment are present, the carrying values of the asset are evaluated in relation to their operating performance and future undiscounted cash flows of the underlying business. If the future undiscounted cash flows are less than their carrying value, impairment exists. The impairment is measured as the difference between the carrying value and the fair value of the underlying asset. Fair values are based on estimates of market prices and assumptions concerning the amount and timing of estimated future cash flows and assumed discount rates, reflecting varying degrees of perceived risk.

Foreign Exchange

The functional currency of the majority of the Company’s foreign subsidiaries is the applicable local currency. For those subsidiaries, assets and liabilities are translated to U.S. dollars at year-end exchange rates. Income and expense accounts are translated at the average exchange rates prevailing during the year. The resulting translation adjustments are included in accumulated other comprehensive income in consolidated stockholders’ equity. Foreign exchange transaction gains and losses, which arise from transaction activity, are reflected in selling, general and administrative expenses in the statement of operations.

Net foreign exchange gains and losses resulting from re-measurement are included in selling general and administrative expense and were a loss of $1,937, a gain of $301 and a loss of $126, respectively, for the years ended December 31, 2013, 2012 and 2011. These amounts do not reflect the corresponding gain (loss) from foreign exchange contracts. See Note 7 “Derivatives” regarding foreign exchange contracts.

Income Taxes

The Company records income taxes using the asset and liability method. Deferred income tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective income tax bases, and operating loss and tax credit carry forwards. On a quarterly basis, the Company evaluates both the positive and negative evidence that affects the realizability of net deferred tax assets and assesses the need for a valuation allowance. The future benefit to be derived from its deferred tax assets is dependent upon its ability to generate sufficient future taxable income to realize the assets. The Company records a valuation allowance to reduce its net deferred tax assets to the amount that is more likely than not to be realized. To the extent the Company establishes a valuation allowance an expense will be recorded as a component of the provision for income taxes on the statement of operations. As of December 31, 2011, the Company had a valuation allowance of $26,475 primarily related to capital losses incurred from its divested operations, and state tax credit carry forwards. During 2012, the Company increased its valuation allowance by $1,022 primarily related to an increase in state tax credit carry forwards as management determined it is more likely than not that the deferred tax assets related to these attributes will not be realized. As a result, the valuation allowance was $27,497 at December 31, 2012. During 2013, the Company decreased its valuation allowance by $395 primarily related to the expiration of US capital loss carry forwards. As a result, the valuation allowance was $27,102 at December 31, 2013.

Accounting for income taxes requires a two-step approach to recognize and measure uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if, based on the technical merits, it is more likely than not that the position will be sustained upon audit, including resolutions of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement. The Company re-evaluates these uncertain tax positions on a quarterly basis. This evaluation is based on factors including, but not limited to, changes in facts or circumstances, changes in tax law, effectively settled issues under audit and new audit activity. Any change in these factors could result in the recognition of a tax benefit or an additional charge to the tax provision.

Recently Issued Accounting Pronouncements

12 Months Ended

Dec. 31, 2013

Accounting Changes And Error Corrections [Abstract]

Recently Issued Accounting Pronouncements

4)	Recently Issued Accounting Pronouncements

On July 18, 2013, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) 2013-11, “Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carry-forward, a Similar Tax Loss, or a Tax Credit Carry-forward Exists.” Under the new standard, unrecognized tax benefits will be netted against all available same-jurisdiction loss or other tax carry-forwards that would be utilized, rather than only against carry-forwards that are created by unrecognized tax benefits. The provisions of this ASU are effective for interim and annual periods beginning on or after December 15, 2013. The adoption of ASU No. 2013-11 is not expected to have a material effect on the Company’s consolidated financial statements.

- Definition

The entire disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6507316

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6510796

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=28359718&loc=d3e22583-107794

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Indirect Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6515603

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=28359718&loc=d3e22580-107794

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.10-01.(b)(6))
-URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accounting Change
-URI http://asc.fasb.org/extlink&oid=6503790

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=28359718&loc=d3e22499-107794

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Retrospective Application
-URI http://asc.fasb.org/extlink&oid=6523989

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e765-108305

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e725-108305

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 01
-Paragraph b
-Subparagraph 6
-Article 10

+ Details

Investments

12 Months Ended

Dec. 31, 2013

Investments Debt And Equity Securities [Abstract]

Investments

5)	Investments

The fair value of short-term investments with maturities or estimated lives of less than one year consists of the following:


	Years Ended December 31,
	2013		2012
Available-for-sale investments:
Time deposits	$	3,439	$	52
Bankers acceptance drafts		491		242
Commercial paper and certificates of deposit		114,984		—
Corporate obligations		18,351		—
U.S. treasury obligations		—		13,054
U.S. agency obligations		162,450		313,514

		299,715		326,862
Trading investments:
Mutual funds (1)		1,000		791

	$	300,715	$	327,653

(1)	The mutual funds are associated with the Company’s supplemental defined contribution retirement obligations.

The fair value of long-term available-for-sale investments with maturities or estimated lives of more than one year consists of the following:


	Years Ended December 31,
	2013		2012
Time deposits	$	54	$	—
U.S. agency obligations		60,351		12,158

	$	60,405	$	12,158

The following table shows the gross unrealized gains and (losses) aggregated by investment category for short-term and long-term available-for-sale investments:


	Cost		Gross Unrealized Gains		Gross Unrealized (Losses)			Estimated Fair Value
As of December 31, 2013:
Short-term investments:
Available-for-sale investments:
Time deposits	$	3,439	$	—	$	—		$	3,439
Bankers acceptance drafts		491		—		—			491
Commercial paper and certificates of deposit		114,973		15		(4	)		114,984
Corporate obligations		18,360		—		(9	)		18,351
U.S. agency obligations		162,430		22		(2	)		162,450

	$	299,693	$	37	$	(15	)	$	299,715

Long-term investments:
Time deposits	$	54	$	—	$	—		$	54
U.S. agency obligations		60,374		9		(32	)		60,351

	$	60,428	$	9	$	(32	)	$	60,405


	Cost		Gross Unrealized Gains		Gross Unrealized (Losses)			Estimated Fair Value
As of December 31, 2012:
Short-term investments:
Available-for-sale investments:
Time deposits	$	52	$	—	$	—		$	52
Bankers acceptance drafts		242		—		—			242
U.S. treasury obligations		13,045		9		—			13,054
U.S. agency obligations		313,262		258		(6	)		313,514

	$	326,601	$	267	$	(6	)	$	326,862

Long-term investments:
U.S. agency obligations	$	12,156	$	2	$	—		$	12,158

Interest income is accrued as earned. Dividend income is recognized as income on the date the stock trades “ex-dividend.” The cost of marketable securities sold is determined by the specific identification method and realized gains or losses are reflected in income and was not material in 2013, 2012 and 2011.

The unrealized gains and losses for trading investments were immaterial in 2013.

- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References + Details

Fair Value Measurements

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements

6)	Fair Value Measurements

In accordance with the provisions of fair value accounting, a fair value measurement assumes that the transaction to sell an asset or transfer a liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability and defines fair value based upon an exit price model.

The fair value measurement guidance establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The guidance describes three levels of inputs that may be used to measure fair value:


Level 1		Quoted prices in active markets for identical assets or liabilities as of the reporting date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis.
Level 2		Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 assets and liabilities include debt securities with quoted prices that are traded less frequently than exchange-traded instruments or securities or derivative contracts that are valued using a pricing model with inputs that are observable in the market or can be derived principally from or corroborated by observable market data.
Level 3		Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.

In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, we categorize such assets and liabilities based on the lowest level input that is significant to the fair value measurement in its entirety. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset.

Assets and liabilities of the Company measured at fair value on a recurring basis as of December 31, 2013, are summarized as follows:


			Fair Value Measurements at Reporting Date Using
Description	December 31, 2013		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents:
Money market funds	$	38,166	$	38,166	$	—	$	—
Bankers acceptance drafts		32		—		32		—
Commercial paper and certificates of deposit		10,400		—		10,400		—
Trading securities:
Mutual funds		1,000		1,000		—		—
Available-for-sale securities:
Time deposits		3,493		—		3,493		—
Bankers acceptance drafts		491		—		491		—
Commercial paper and certificates of deposit		114,984		—		114,984		—
Corporate obligations		18,351		—		18,351		—
U.S. agency obligations		222,801		—		222,801		—
Derivatives — currency forward contracts		920		—		920		—

Total assets	$	410,638	$	39,166	$	371,472	$	—

Liabilities:
Derivatives — currency forward contracts	$	656	$	—	$	656	$	—

Reported as follows:
Assets:
Cash and cash equivalents (1)	$	48,598	$	38,166	$	10,432	$	—
Short-term investments		300,715		1,000		299,715		—
Other current assets		920		—		920		—

	$	350,233	$	39,166	$	311,067	$	—

Long-term investments	$	60,405	$	—	$	60,405	$	—

Liabilities:
Other current liabilities	$	656	$	—	$	656	$	—

(1)	The cash and cash equivalent amounts presented in the table above do not include cash of $234,675 and non-negotiable time deposits of $5,629 as of December 31, 2013.

Assets and liabilities of the Company measured at fair value on a recurring basis as of December 31, 2012, are summarized as follows:


			Fair Value Measurements at Reporting Date Using
Description	December 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents:
Money market funds	$	51,291	$	51,291	$	—	$	—
Bankers acceptance drafts		16		—		16		—
Trading securities:
Mutual funds		791		791		—		—
Available-for-sale securities:
Bankers acceptance drafts		242		—		242		—
U.S. treasury obligations		13,054		—		13,054		—
U.S. agency obligations		325,672		295,665		30,007		—
Derivatives — currency forward contracts		961		—		961		—

Total assets	$	392,027	$	347,747	$	44,280	$	—

Liabilities:
Derivatives — currency forward contracts	$	1,310	$	—	$	1,310	$	—

Reported as follows:
Assets:
Cash and cash equivalents (1)	$	51,307	$	51,291	$	16	$	—
Short-term investments (2)		327,601		284,298		43,303		—
Other current assets		961		—		961		—

	$	379,869	$	335,589	$	44,280	$	—

Long-term investments	$	12,158	$	12,158	$	—	$	—

Liabilities:
Other current liabilities	$	1,310	$	—	$	1,310	$	—

(1)	The cash and cash equivalent amounts presented in the table above do not include cash of $185,143 and non-negotiable time deposits of $51,138 as of December 31, 2012.

(2)	The short-term investments presented in the table above do not include non-negotiable time deposits of $52 as of December 31, 2012.

Money Market Funds

Money market funds are cash and cash equivalents, and are classified within Level 1 of the fair value hierarchy.

Trading Mutual Fund Investments

As of December 31, 2013, trading investments consisted of certain U.S. and international equity mutual funds and government agency fixed income mutual funds.

Available-For-Sale Investments

As of December 31, 2013 and 2012, available-for-sale investments consisted of time deposits and drafts denominated in the Euro currency, commercial paper, certificates of deposit, corporate obligations, U.S. treasury obligations and U.S. agency obligations.

The Company measures its debt and equity investments at fair value. The Company’s available-for-sale investments are classified within Level 1 and Level 2 of the fair value hierarchy.

Derivatives

As a result of the Company’s global operating activities, the Company is exposed to market risks from changes in foreign currency exchange rates, which may adversely affect its operating results and financial position. When deemed appropriate, the Company minimizes its risks from foreign currency exchange rate fluctuations through the use of derivative financial instruments. The principal market in which the Company executes its foreign currency contracts is the institutional market in an over-the-counter environment with a relatively high level of price transparency. The market participants usually are large commercial banks. The forward foreign currency exchange contracts are valued using broker quotations, or market transactions and are classified within Level 2 of the fair value hierarchy.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Derivatives

12 Months Ended

Dec. 31, 2013

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivatives

7)	Derivatives

The Company enters into derivative instruments for risk management purposes only, including derivatives designated as hedging instruments and those utilized as economic hedges. The Company operates internationally and, in the normal course of business, is exposed to fluctuations in interest rates and foreign exchange rates. These fluctuations can increase the costs of financing, investing and operating the business. The Company has used derivative instruments, such as forward contracts, to manage certain foreign currency exposure.

By nature, all financial instruments involve market and credit risks. The Company enters into derivative instruments with major investment grade financial institutions and no collateral is required. The Company has policies to monitor the credit risk of these counterparties. While there can be no assurance, the Company does not anticipate any material non-performance by any of these counterparties.

The Company hedges a portion of its forecasted foreign currency denominated intercompany sales of inventory, over a maximum period of eighteen months, using forward foreign exchange contracts accounted for as cash-flow hedges related to Japanese, South Korean, British and Euro currencies. To the extent these derivatives are effective in off-setting the variability of the hedged cash flows, and otherwise meet the hedge accounting criteria, changes in the derivatives’ fair value are not included in current earnings but are included in OCI in stockholders’ equity. These changes in fair value will subsequently be reclassified into earnings, as applicable, when the forecasted transaction occurs. To the extent that a previously designated hedging transaction is no longer an effective hedge, any ineffectiveness measured in the hedging relationship is recorded currently in earnings in the period it occurs. The cash flows resulting from forward exchange contracts are classified in the consolidated statements of cash flows as part of cash flows from operating activities. The Company does not enter into derivative instruments for trading or speculative purposes.

To the extent the hedge accounting criteria is not met, the related foreign currency forward contracts are considered as economic hedges and changes in the fair value of these contracts are recorded immediately in earnings in the period in which they occur. These include hedges that are used to reduce exchange rate risks arising from the change in fair value of certain foreign currency denominated assets and liabilities (i.e., payables, receivables) and other economic hedges where the hedge accounting criteria were not met.

As of December 31, 2013 and 2012, the Company had outstanding forward foreign exchange contracts with gross notional values of $21,018 and $41,448, respectively. The following tables provide a summary of the primary net hedging positions and corresponding fair values held as of December 31, 2013 and 2012:


	December 31, 2013
Currency Hedged (Buy/Sell)	Gross Notional Value		Fair Value(1)
U.S. Dollar/Japanese Yen	$	7,191	$	920
U.S. Dollar/South Korean Won		9,254		(521	)
U.S. Dollar/Euro		2,806		(85	)
U.S. Dollar/U.K. Pound Sterling		1,767		(50	)

Total	$	21,018	$	264


	December 31, 2012
Currency Hedged (Buy/Sell)	Gross Notional Value		Fair Value (1)
U.S. Dollar/Japanese Yen	$	13,992	$	961
U.S. Dollar/South Korean Won		19,374		(1,180	)
U.S. Dollar/Euro		4,217		(57	)
U.S. Dollar/U.K. Pound Sterling		3,865		(73	)

Total	$	41,448	$	(349	)

(1)	Represents the net receivable (payable) amount included in the consolidated balance sheet.

The following table provides a summary of the fair value amounts of the Company’s derivative instruments:


	Years Ended December 31,
Derivatives Designated as Hedging Instruments	2013			2012
Derivative assets:
Forward exchange contracts	$	920		$	961
Derivative liabilities:
Forward exchange contracts		(656	)		(1,310	)

Total net derivative asset (liability) designated as hedging instruments (1)	$	264		$	(349	)

(1)

The derivative asset of $920 and derivative liability of $656 are classified in other current assets and other current liabilities, respectively, in the consolidated balance sheet as of December 31, 2013. The derivative asset of $961 and derivative liability of $1,310 are classified in other current assets and other current liabilities, respectively, in the consolidated balance sheet as of December 31, 2012

The net amount of existing losses as of December 31, 2013 that is expected to be reclassified from accumulated OCI into earnings within the next twelve months is not immaterial.

The following table provides a summary of the gains (losses) on derivatives designated as hedging instruments:


	Years Ended December 31,
Derivatives Designated as Cash Flow Hedging Relationships	2013			2012			2011
Forward exchange contracts:
Net (loss) gain recognized in OCI (1)	$	(48	)	$	936		$	4,311
Net gain (loss) reclassified from accumulated OCI into income (2)	$	1,086		$	(930	)	$	(4,021	)

(1)	Net change in the fair value of the effective portion classified in OCI.

(2)	Effective portion classified as cost of products in 2013 and selling, general and administrative in 2012 and 2011.

The following table provides a summary of (losses) on derivatives not designated as hedging instruments:


	Years Ended December 31,
Derivatives Not Designated as Hedging Instruments	2013			2012			2011
Forward exchange contracts:
Net (loss) recognized in income (1)	$	(215	)	$	(1,606	)	$	—

(1)	The Company has a forward foreign exchange contract that hedges an intercompany loan with its Korean subsidiary. This hedge does not qualify for hedge accounting and any gains (losses) are recorded immediately in selling, general and administrative expenses.

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41620-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

Inventories

12 Months Ended

Dec. 31, 2013

Inventory Disclosure [Abstract]

Inventories

8)	Inventories

Inventories consist of the following:


	Years Ended December 31,
	2013		2012
Raw material	$	75,687	$	76,610
Work-in-process		24,304		19,708
Finished goods		42,736		38,321

	$	142,727	$	134,639

Inventory related excess and obsolete charges of $21,671, $15,028 and $14,857 were recorded in cost of products in the years ended December 31, 2013, 2012 and 2011, respectively. Included in excess and obsolete charges for 2013 is $6,423 of special charges for obsolete inventory related to a unique product in a solar application as a result of slowing market conditions, which provided uncertainty as to the net realizable value of this inventory.

Property, Plant and Equipment

12 Months Ended

Dec. 31, 2013

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

9)	Property, Plant and Equipment

Property, plant and equipment consist of the following:


	Years Ended December 31,
	2013		2012
Land	$	9,225	$	9,188
Buildings		68,569		68,831
Machinery and equipment		116,475		115,032
Furniture and fixtures, office equipment and software		59,068		51,669
Leasehold improvements		20,590		18,003
Construction in progress		3,702		9,227

		277,629		271,950
Less: accumulated depreciation		200,093		191,434

	$	77,536	$	80,516

Depreciation of property, plant and equipment totaled $14,964, $13,406 and $11,965 for the years ended 2013, 2012 and 2011, respectively.

Acquisitions

12 Months Ended

Dec. 31, 2013

Business Combinations [Abstract]

Acquisitions

10)

Acquisitions

Alter S.r.l

On March 12, 2013, the Company acquired Alter S.r.l. (“Alter”), located in Reggio Emilia, Italy. The aggregate purchase price, net of cash acquired and after final debt and working capital adjustments was $2,426. Total cash paid as of June 30, 2013, net of cash acquired of $21 was $2,058. During June 2013, one of two holdback provisions was met and the Company released $123. The Company will pay the remaining $368 subject to a final holdback provision being met. Alter develops advanced microwave power generators, components and systems for industrial microwave heating, microwave plasma coating and semiconductor applications. This acquisition strengthens the Company’s existing microwave plasma expertise and product portfolio, and extends its opportunity into high growth, non-plasma microwave applications for industrial processes, food and beverage manufacturing and other markets.

The following table summarizes the estimated fair value of the assets acquired and liabilities assumed at the date of the acquisition:


Current assets	$	1,053
Property and equipment		211
Intangible assets		2,806
Other assets		67

Total assets acquired		4,137

Debt (Note 15)		770
Deferred taxes and other liabilities		920

Total liabilities assumed		1,690
Total purchase price		2,447
Cash acquired		(21	)

Total purchase price, net of cash acquired	$	2,426

The intangible assets associated with the acquisition are not deductible for tax purposes. The following table reflects the allocation of the acquired intangible assets and related estimates of useful lives. These acquired intangibles will be amortized on a straight-line basis.

The results of this acquisition were included in the Company’s consolidated operations beginning on March 12, 2013. The pro forma consolidated statements reflecting the operating results of Alter, had it been acquired as of January 1, 2013, would not differ materially from the operating results of the Company as reported for the year ended December 31, 2013. Alter is included in the Company’s Power and Reactive Gas Products group and the Advanced Manufacturing Capital Equipment reportable segment.

Plasmart, Inc.

On August 29, 2012, the Company acquired Plasmart, Inc. (“Plasmart”), located in Daejeon, Korea. Plasmart develops radio frequency (RF) plasma generation and monitoring systems for the semiconductor, flat panel display, active matrix organic light emitting diodes and solar photovoltaic industries. Plasmart’s expertise in RF systems and access to the important Korean market were key drivers in the selection of Plasmart for acquisition. The aggregate purchase price, net of cash acquired, consisted of $22,607, subject to final working capital adjustments in the fourth quarter of 2012 of $1,778. Acquisition related costs of $1,258 and step-up inventory of $303 were expensed as incurred.

The following table summarizes the estimated fair value of the assets acquired and liabilities assumed at the date of the acquisition.


Current assets	$	5,536
Property, plant and equipment		3,565
Other assets		554
Intangible assets		10,745
Goodwill		9,989

Total assets acquired	$	30,389

Debt (Note 15)		4,561
Deferred taxes and other liabilities		3,128

Total liabilities assumed	$	7,689
Total purchase price	$	22,700
Cash acquired		(93	)

Total purchase price, net of cash acquired	$	22,607

The goodwill and other intangible assets associated with the acquisition are not deductible for tax purposes. The following table reflects the allocation of the acquired intangible assets and related estimates of useful lives. These acquired intangibles will be amortized on a straight-line basis.


Current developed technology	$	5,029	7.5 – 9.5 years useful life
Trade names		335	7 year useful life
Customer relationships		5,381	10 year useful life

	$	10,745

This transaction resulted in an amount of purchase price that exceeded the estimated fair value of tangible and intangible assets, which was allocated to goodwill. The Company believes that the amount of goodwill relative to identifiable intangible assets relates to several factors including: (1) potential buyer-specific synergies related to market opportunities for a combined product offering and (2) potential to leverage the Company’s sales force and intellectual property to attract new customers and revenue.

The results of this acquisition were included in the Company’s consolidated operations beginning on August 29, 2012. The pro forma consolidated statements reflecting the operating results of Plasmart, had they been acquired as of January 1, 2012, would not differ materially from the operating results of the Company as reported for the year ended December 31, 2012. Plasmart is included in the Power and Reactive Gas Products group and the Advanced Manufacturing Capital Equipment reportable segment.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1497-128463

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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2013

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

11)

Goodwill and Intangible Assets

Goodwill

The changes in the carrying amount of goodwill and accumulated impairment losses were as follows:


	2013							2012
	Gross Carrying Amount		Accumulated Impairment Loss			Net		Gross Carrying Amount		Accumulated Impairment Loss			Net
Beginning balance at January 1	$	290,147	$	(139,414	)	$	150,733	$	279,498	$	(139,414	)	$	140,084
Acquired goodwill(1)		—		—			—		9,989		—			9,989
Foreign currency translation		176		—			176		660		—			660

Ending balance at December 31	$	290,323	$	(139,414	)	$	150,909	$	290,147	$	(139,414	)	$	150,733

(1)	On August 29, 2012, the Company purchased Plasmart, Inc. for $22,607, net of cash acquired. The Company recorded $9,989 of goodwill in connection with the acquisition.

Goodwill associated with each of our reportable segments is as follows:


	Years Ended December 31,
	2013		2012
Reportable segment:
Advanced Manufacturing Capital Equipment	$	142,241	$	142,065
Analytical Solutions Group		8,668		8,668
Europe Region Sales & Service		—		—
Asia Region Sales & Service		—		—

Total goodwill	$	150,909	$	150,733

Intangible Assets

The Company is required to test certain long-lived assets when indicators of impairment are present. For the purposes of the impairment test, long-lived assets are grouped with other assets and liabilities at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. There were no intangible asset impairment charges in 2013, 2012 or 2011.

Components of the Company’s acquired intangible assets are comprised of the following:


As of December 31, 2013	Gross		Accumulated Amortization			Foreign Currency Translation		Net
Completed technology(1)	$	84,680	$	(78,072	)	$	519	$	7,127
Customer relationships		14,571		(9,831	)		454		5,194
Patents, trademarks, trade names and other(1)		25,636		(24,951	)		84		769

	$	124,887	$	(112,854	)	$	1,057	$	13,090

(1)

In August 2013, the Company purchased $268 of net assets of which $388 was completed technology. In March 2013, the Company purchased Alter for $2,426, net of cash acquired. The Company recorded $2,806 of separately identified intangible assets, of which $2,208 was completed technology and $598 was trademarks and trade names.


As of December 31, 2012	Gross		Accumulated Amortization			Foreign Currency Translation		Net
Completed technology(1)	$	82,084	$	(77,243	)	$	254	$	5,095
Customer relationships(1)		14,571		(8,886	)		312		5,997
Patents, trademarks, trade names and other(1)		25,038		(24,587	)		18		469

	$	121,693	$	(110,716	)	$	584	$	11,561

(1)	On August 29, 2012, the Company purchased Plasmart for $22,607, net of cash acquired. The Company recorded $10,745 of separately identified intangible assets, of which $5,029 was completed technology, $5,381 was customer relationships and $335 was trade names

Aggregate amortization expense related to acquired intangible assets for the years 2013, 2012 and 2011 was $2,139, $1,036 and $1,015, respectively.


Year	Amount
2014	$	1,800
2015		1,784
2016		1,601
2017		1,570
2018		1,561
Thereafter		4,774

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Other Assets

12 Months Ended

Dec. 31, 2013

Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]

Other Assets

12)

Other Assets


	Years Ended December 31,
	2013		2012
Other Current Assets:
Income tax receivable	$	39	$	12,768
Other		16,676		15,280

Total other current assets	$	16,715	$	28,048

Other Assets:
Deferred tax assets, net	$	9,208	$	9,497
Long-term income tax receivable		20,516		17,720
Other		2,123		2,195

Total other assets	$	31,847	$	29,412

Other Liabilities

12 Months Ended

Dec. 31, 2013

Other Liabilities Disclosure [Abstract]

Other Liabilities

13)

Other Liabilities


	Years Ended December 31,
	2013		2012
Other Current Liabilities:
Product warranties	$	6,956	$	8,266
Deferred revenue		5,556		9,280
Other		21,730		19,859

Total other current liabilities	$	34,242	$	37,405

Other Liabilities:
Long-term income tax payable	$	46,745	$	38,600
Accrued compensation		9,646		18,750
Other		6,682		3,745

Total other liabilities	$	63,073	$	61,095

Product Warranties

12 Months Ended

Dec. 31, 2013

Guarantees [Abstract]

Product Warranties

14)

Product Warranties

The Company provides for the estimated costs to fulfill customer warranty obligations upon the recognition of the related revenue. While the Company engages in extensive product quality programs and processes, including actively monitoring and evaluating the quality of its component suppliers, the Company’s warranty obligation is affected by shipment volume, product failure rates, utilization levels, material usage and supplier warranties on parts delivered to the Company. Should actual product failure rates, utilization levels, material usage, or supplier warranties on parts differ from the Company’s estimates, revisions to the estimated warranty liability would be required. The product warranty liability is included in other current liabilities in the consolidated balance sheets.

Product warranty activities were as follows:


	Years Ended December 31,
	2013			2012
Beginning balance	$	8,266		$	8,315
Provisions for product warranties		2,755			4,514
Direct charges to warranty liability		(3,987	)		(4,985	)
Foreign currency translation		(78	)		422

Ending balance	$	6,956		$	8,266

Debt

12 Months Ended

Dec. 31, 2013

Debt Disclosure [Abstract]

Debt

15)

Debt

Credit Agreements and Short-Term Borrowings

The Company’s Japanese subsidiary has lines of credit and short-term borrowing arrangements with two financial institutions which generally expire and are renewed at three month intervals. The lines of credit provide for aggregate borrowings as of December 31, 2013 of up to an equivalent of $21,878 U.S. dollars. One of the borrowing arrangements has an interest rate based on the Tokyo Interbank Offer Rate at the time of borrowing and the other has an interest rate based on the Japanese Short-term Prime Lending Rate. There were no borrowings outstanding under these arrangements at December 31, 2013 and 2012.

The Company also had various lines of credit and short and long-term borrowing arrangements as a result of its acquisitions of Plasmart in 2012 and Alter in March 2013. All of these lines of credit and borrowing arrangements were paid off and terminated in 2013. There were no outstanding balances at December 31, 2013 and 2012.

Income Taxes

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Income Taxes

16)

Income Taxes

A reconciliation of the Company’s effective tax rate to the U.S. federal statutory rate is as follows:


	Years Ended December 31,
	2013			2012			2011
U.S. Federal income tax statutory rate		35.0	%		35.0	%		35.0	%
Federal tax credits		(1.8	)		—			(0.7	)
State income taxes, net of federal benefit		1.3			1.3			1.1
Effect of foreign operations taxed at various rates		0.3			(2.6	)		(4.1	)
Qualified production activity tax benefit		(1.4	)		(0.5	)		(1.1	)
Deferred tax asset valuation allowance		(0.7	)		1.4			0.6
Income tax charges on accumulated foreign earnings		10.9			—			—
Tax benefit related to reinstatement of tax incentives		(4.0	)		—			—
Other		0.1			1.5			(0.5	)

		39.7	%		36.1	%		30.3	%

The components of income from continuing operations before income taxes and the related provision for income taxes consist of the following:


	Years Ended December 31,
	2013			2012		2011
Income from continuing operations before income taxes:
United States	$	29,546		$	28,652	$	108,474
Foreign		29,755			46,484		77,578

	$	59,301		$	75,136	$	186,052


Current taxes:
United States	$	11,338		$	14,745	$	40,856
State		1,159			783		2,602
Foreign		14,117			7,760		5,314

		26,614			23,288		48,772

Deferred taxes:
United States		(1,730	)		2,019		7,795
State and Foreign		(1,359	)		1,800		(246	)

		(3,089	)		3,819		7,549

Provision for income taxes	$	23,525		$	27,107	$	56,321

The significant components of the deferred tax assets and deferred tax liabilities are as follows:


	Years Ended December 31,
	2013			2012
Deferred tax assets:
Loss carry-forwards and credits	$	28,138		$	29,032
Inventory and warranty reserves		10,890			10,959
Accounts receivable and other accruals		2,615			2,647
Stock-based compensation		3,581			5,032
Executive supplemental retirement benefits		8,026			6,132
Other		63			—

Total deferred tax assets	$	53,313		$	53,802


Deferred tax liabilities:
Acquired intangible assets		(2,782	)		(5,857	)
Depreciation and amortization		(5,085	)		(4,461	)
Other		(1,202	)		(1,145	)

Total deferred tax liabilities		(9,069	)		(11,463	)

Valuation allowance		(27,102	)		(27,497	)

Net deferred tax assets	$	17,142		$	14,842

At December 31, 2013, the Company had gross Massachusetts research and other tax credit carry forwards of $8,689. These credit carry forwards will expire at various dates through 2028. In addition, at December 31, 2013, the Company had U.S. federal capital loss carry forwards of $59,275 that will expire in 2015.

Although the Company believes that its tax positions are consistent with applicable U.S. federal, state and international laws, it maintains certain tax reserves at December 31, 2013 in the event its tax positions were to be challenged by the applicable tax authority and additional tax assessed on audit.

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows:


	Years Ended December 31,
	2013			2012		2011
Balance at beginning of year	$	40,674		$	36,540	$	22,028
Decreases for prior years		—			—		(3	)
Increases for the current year		7,308			4,134		16,663
Reductions related to settlements with taxing authorities		—			—		(2,148	)
Reductions related to expiration of statute of limitations		(298	)		—		—

Balance at end of year	$	47,684		$	40,674	$	36,540

At December 31, 2013, the total amount of gross unrecognized tax benefits, which excludes interest and penalties, was approximately $47,684. The net increase from December 31, 2012 was primarily attributable to a current year increase in reserves for new and existing uncertain tax positions. At December 31, 2013, there are $24,758, excluding interest and penalties, of net unrecognized tax benefits that, if recognized, would affect our annual effective tax rate. In 2013, the Company recorded a net benefit to income tax expense of $140, excluding interest and penalties, due to discrete reserve releases primarily related to statutes of limitations expiring. In 2011, the Company recorded a net benefit to income tax expense of $2,148, excluding interest and penalties, due to discrete reserve releases primarily related to the effective settlement of a German tax audit for years 2001 through 2005.

The Company accrues interest and, if applicable, penalties for any uncertain tax positions. Interest and penalties are classified as a component of income tax expense. At December 31, 2013, 2012 and 2011, the Company had accrued interest on unrecognized tax benefits of approximately $2,159, $1,571 and $973, respectively.

Over the next 12 months it is reasonably possible that the Company may recognize approximately $12,614 of previously net unrecognized tax benefits related to various U.S. federal, state and foreign tax positions as a result of the conclusion of various audits and the expiration of the statute of limitations. The Company is subject to examination by U.S. federal, state and foreign tax authorities. The Internal Revenue Service commenced an examination of its U.S. federal tax filings for open tax years 2007 through present during the quarter ended June 30, 2012. As a result, the U.S. statute of limitations remains open between tax years 2007 through present. The statute of limitations for the Company’s tax filings in other jurisdictions varies between fiscal years 2006 through present.

On a quarterly basis, the Company evaluates both positive and negative evidence that affects the realizability of net deferred tax assets and assesses the need for a valuation allowance. The future benefit to be derived from its deferred tax assets is dependent upon its ability to generate sufficient future taxable income to realize the assets. During 2013, the Company decreased its valuation allowance by $395 primarily related to the expiration of US capital loss carry forwards. In 2012 we increased our valuation allowance by $1,022 primarily related to an increase in state tax credit carry forwards because the Company determined it is more likely than not that the deferred tax assets related to these attributes will not be realized. In 2011, the Company increased its valuation allowance by $1,208 primarily related to capital losses incurred from our foreign affiliates because we determined it is more likely than not that the deferred tax assets related to these attributes will not be realized.

Through December 31, 2013, the Company has not provided deferred income taxes on the undistributed earnings of its foreign subsidiaries because such earnings were intended to be permanently reinvested outside the U.S. Determination of the potential deferred income tax liability on these undistributed earnings is not practicable because such liability, if any, is dependent on circumstances existing if and when remittance occurs. At December 31, 2013, the Company had $440,841 of undistributed earnings in its foreign subsidiaries.

During 2006, the Company received a notification letter from the Israeli Ministry of Industry Trade and Labor (“MITL”) indicating that its Israeli operations were in compliance with requirements relating to the tax holiday granted to its manufacturing operations in Israel in 2001. This tax holiday expired at December 31, 2011 and was subject to meeting continued investment, employment and other requirements under the guidelines of the MITL. This tax holiday resulted in income tax savings of approximately $1,000 and $2,700 for the years 2011 and 2010, respectively. Upon expiration of its tax holiday, the Company elected to be treated under a new preferential Israeli tax regime under which a tax rate of 10% applies for 2012, is reduced to 7% for 2013, and increased to 9% for 2014. The Company’s Israeli subsidiary is currently under examination for tax years 2009 through 2011 and expects the audit to be effectively settled during the quarter ended March 31, 2014.

On September 13, 2013, the U.S. Department of the Treasury and Internal Revenue Service released final tangible property regulations that provide guidance on the tax treatment regarding the deduction and capitalization of expenditures related to tangible property. While early adoption is available, the effective date to implement these regulations is for tax years beginning on or after January 1, 2014. The Company is currently assessing these rules and the impact to its financial statements, if any, but believes adoption of these regulations will not have a material impact on its consolidated results of operations, cash flows or financial position.

On January 2, 2013, the American Taxpayer Relief Act of 2012 reinstated certain tax incentives with retroactive application to January 1, 2012, the tax effect of which was recognized as a discrete event in the first quarter of 2013. Had the extension been enacted prior to January 1, 2013, our effective tax rate for 2012 would have been reduced by approximately 3%.

Stockholders' Equity

12 Months Ended

Dec. 31, 2013

Equity [Abstract]

Stockholders' Equity

17)

Stockholders’ Equity

Stock Repurchase

On July 25, 2011, the Company’s board of directors approved a share repurchase program for the repurchase of up to an aggregate of $200,000 of its outstanding Common Stock from time to time in open market purchases, privately negotiated transactions or through other appropriate means. The timing and quantity of any shares repurchased will depend upon a variety of factors, including business conditions, stock market conditions and business development activities, including, but not limited to, merger and acquisition opportunities. These repurchases may be commenced, suspended or discontinued at any time without prior notice.

During 2013, the Company repurchased 107,000 shares of its Common Stock for $2,875 at an average price of $26.87 per share. During 2012, the Company repurchased 434,600 shares of its Common Stock for $11,501 at an average price of $26.46 per share.

Dividends

Holders of the Company’s Common Stock are entitled to receive dividends when they are declared by the Company’s board of directors. During 2013, the board of directors authorized four quarterly dividends, of $0.16 per share, which totaled $33,975. Future dividend declarations, if any, as well as the record and payment dates for such dividends, are subject to the final determination of the Company’s board of directors.

On February 10, 2014, the Company’s board of directors declared a quarterly cash dividend of $0.16 per share to be paid on March 14, 2014 to shareholders of record as of March 3, 2014.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(d),(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 4.E)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29-31)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph d
-Article 4

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 18: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

Stock-Based Compensation

12 Months Ended

Dec. 31, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation

18)

Stock-Based Compensation

Employee Stock Purchase Plans

The Company’s Fourth Restated 1999 Employee Stock Purchase Plan (the “Purchase Plan”) authorizes the issuance of up to an aggregate of 1,950,000 shares of Common Stock to participating employees. Offerings under the Purchase Plan commence on June 1 and December 1 and terminate, respectively, on November 30 and May 31. Under the Purchase Plan, eligible employees may purchase shares of Common Stock through payroll deductions of up to 10% of their compensation or up to an annual maximum amount of $21,250. The price at which an employee’s purchase option is exercised is the lower of (1) 85% of the closing price of the Common Stock on the NASDAQ Global Select Market on the day that each offering commences, or (2) 85% of the closing price on the day that each offering terminates. During 2013 and 2012, the Company issued 138,674 and 141,975 shares, respectively, of Common Stock to employees who participated in the Purchase Plan at an exercise price of $20.42 and $23.96 per share in 2013 and $22.40 and $22.01 per share in 2012. As of December 31, 2013, there were 212,074 shares reserved for future issuance under the Purchase Plan.

The Company’s Third Amended and Restated International Employee Stock Purchase Plan (the “Foreign Purchase Plan”) authorizes the issuance of up to an aggregate of 400,000 shares of Common Stock to participating employees. Offerings under the Foreign Purchase Plan commence on June 1 and December 1 and terminate, respectively, on November 30 and May 31. Under the Foreign Purchase Plan, eligible employees may purchase shares of Common Stock through payroll deductions of up to 10% of their compensation or up to an annual maximum amount of $21,250. The price at which an employee’s purchase option is exercised is the lower of (1) 85% of the closing price of the Common Stock on the NASDAQ Global Select Market on the day that each offering commences, or (2) 85% of the closing price on the day that each offering terminates. During 2013 and 2012, the Company issued 33,929 and 29,954 shares, respectively, of Common Stock to employees who participated in the Foreign Purchase Plan at an exercise price of $20.42 and $23.96 per share in 2013 and $22.40 and $22.01 per share in 2012. As of December 31, 2013, there were 62,541 shares reserved for future issuance under the Foreign Purchase Plan.

Equity Incentive Plans

The Company has granted options to employees under the 2004 Stock Incentive Plan (the “2004 Plan”) and under the Second Restated 1995 Stock Incentive Plan (the “1995 Plan”), and to directors under the 1997 Director Stock Plan (the “1997 Director Plan”) (collectively, the “Plans”). The Company has also granted restricted stock units (“RSU“s) to employees and directors under the 2004 Plan. The Plans are administered by the Compensation Committee of the Company’s board of directors.

The Company’s equity incentive Plans are intended to attract and retain employees and to provide an incentive for them to assist the Company to achieve long-range performance goals and to enable them to participate in the long-term growth of the Company. Employees may be granted RSUs, options to purchase shares of the Company’s stock and other equity incentives under the Plans.

The Company’s 2004 Plan was adopted by the board of directors on March 4, 2004 and approved by the stockholders on May 13, 2004. As of December 31, 2013, there were 15,000,000 shares authorized for issuance under the 2004 Plan. The Company may grant options, RSUs, stock appreciation rights and other stock-based awards to employees, officers, directors, consultants and advisors under the 2004 Plan. As of December 31, 2013, there were 10,916,285 shares available for future grants under the 2004 Plan.

The Company’s 1995 Plan expired in November 2005 and no further awards may be granted under the 1995 Plan, although there are still outstanding options which may be exercised under this plan.

The Company’s 1997 Director Plan expired in February 2007 and no further awards may be granted under the 1997 Director Plan, although there are still outstanding options which may be exercised under this plan.

Stock options were granted at an exercise price equal to 100% of the fair value of the Company’s Common Stock at the date of grant. Generally, stock options granted to employees under the Plans in 2001 and after, vested 25% after one year and 6.25% per quarter thereafter, and expire 10 years after the grant date. Options granted to directors generally vested at the earliest of (1) one day prior to the next annual meeting, (2) 13 months from date of grant, or (3) the effective date of an acquisition. All stock options are fully vested as of December 31, 2013. RSUs granted in 2013 and 2012 generally vest 33.3% per year after the date of grant. RSUs granted in 2010 and prior, generally vest three years from the date of grant. RSUs granted to employees who are at least 60 years old and have a combined years of age plus years of service (as defined) equal to 70 years or more, are expensed immediately. RSUs granted to directors generally vest at the earliest of (1) one day prior to the next annual meeting, (2) 13 months from date of grant, or (3) the effective date of an acquisition. Certain equity incentive awards involve RSUs that are subject to performance conditions (“performance shares”) under the Company’s stock incentive plans. Such performance shares are available, subject to time-based vesting conditions if, and to the extent that, financial or operational performance criteria for the applicable period are achieved. Accordingly, the number of performance shares earned will vary based on the level of achievement of financial or operational performance objectives for the applicable period.

The following table presents the activity for RSUs under the Plans:


	Years Ended December 31,
	2013					2012					2011
	Non-vested RSUs			Weighted Average Grant Date Fair Value		Non-vested RSUs			Weighted Average Grant Date Fair Value		Non-vested RSUs			Weighted Average Grant Date Fair Value
Non-vested RSUs — beginning of period		942,203		$	26.58		1,115,005		$	21.50		1,327,306		$	18.34
Granted		501,954		$	26.81		426,583		$	29.14		397,492		$	30.27
Vested		(688,376	)	$	25.09		(557,314	)	$	19.01		(569,891	)	$	20.42
Forfeited or expired		(23,747	)	$	27.17		(42,071	)	$	22.36		(39,902	)	$	18.36

Non-vested RSUs — end of period		732,034		$	28.08		942,203		$	26.58		1,115,005		$	21.50

The following table presents the activity for options under the Plans:


	Years Ended December 31,
	2013					2012					2011
	Options			Weighted Average Exercise Price		Options			Weighted Average Exercise Price		Options			Weighted Average Exercise Price
Outstanding — beginning of period		255,649		$	21.74		420,712		$	21.97		1,793,214		$	22.38
Exercised		(88,336	)	$	21.15		(123,650	)	$	18.78		(1,351,684	)	$	22.46
Forfeited or expired		(31,580	)	$	27.04		(41,413	)	$	32.32		(20,818	)	$	22.66

Outstanding — end of period		135,733		$	20.88		255,649		$	21.74		420,712		$	21.97


Exercisable at end of period		135,733		$	20.88		255,649		$	21.74		420,712		$	21.97

The following table summarizes information with respect to options outstanding and exercisable under the Plans at December 31, 2013:


	Options Outstanding and Exercisable
	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (In Years)		Aggregate Intrinsic Value (In Thousands)
$14.45 – $29.93		135,733	$	20.88		0.95	$	1,227

The weighted average remaining contractual life of options exercisable was 0.95 years at December 31, 2013.

The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value, based on the Company’s closing stock price of $29.92 as of December 31, 2013, which would have been received by the option holders had all option holders exercised their options as of that date. The total number of in-the-money options exercisable as of December 31, 2013 was 105,873.

The total cash received from employees as a result of employee stock option exercises during the years 2013 and 2012 was approximately $1,869 and $2,322, respectively. In connection with these exercises, the tax benefit realized by the Company for the years 2013 and 2012 were approximately $94 and $299, respectively.

The Company settles employee stock option exercises and restricted stock vesting with newly issued common shares.

Stock-Based Compensation Expense

The Company recognized the full impact of its share-based payment plans in the consolidated statements of operations and comprehensive income for the years 2013, 2012 and 2011. As of December 31, 2013 and 2012, the Company capitalized $471 of such cost on its consolidated balance sheet. The following table reflects the effect of recording stock-based compensation for the years 2013, 2012 and 2011:


	Years Ended December 31,
	2013			2012			2011
Stock-based compensation expense by type of award:
Restricted stock	$	12,982		$	11,836		$	10,126
Employee stock purchase plan		1,010			1,195			1,099

Total stock-based compensation		13,992			13,031			11,225
Tax effect on stock-based compensation		(495	)		(1,862	)		(5,019	)

Net effect on net income	$	13,497		$	11,169		$	6,206

Effect on net earnings per share:
Basic	$	0.25		$	0.21		$	0.12

Diluted	$	0.25		$	0.21		$	0.12

The pre-tax effect within the consolidated statements of operations and comprehensive income of recording stock-based compensation for the years 2013, 2012 and 2011 was as follows:


	Years Ended December 31,
	2013		2012		2011
Cost of sales	$	2,038	$	1,867	$	1,511
Research and development expense		1,902		2,278		2,197
Selling, general and administrative expense		10,052		8,886		7,517

Total pre-tax stock-based compensation expense	$	13,992	$	13,031	$	11,225

Valuation Assumptions

The Company determines the fair value of restricted stock based on the closing market price of the Company’s Common Stock on the date of the award, and estimates the fair value of stock options and employee stock purchase rights using the Black-Scholes valuation model. Such values are recognized as expense on a straight-line basis over the requisite service periods, net of estimated forfeitures except for retirement eligible employees in which the Company expenses the fair value of the grant in the period the grant is issued. The estimation of stock-based awards that will ultimately vest requires significant judgment. The Company considers many factors when estimating expected forfeitures, including types of awards and historical experience. Actual results, and future changes in estimates, may differ substantially from the Company’s current estimates.

There were no options granted during 2013, 2012 and 2011. The total intrinsic value of options exercised during 2013, 2012 and 2011 was approximately $684, $1,228 and $9,458, respectively.

The weighted average fair value per share of employee stock purchase rights granted in 2013, 2012 and 2011 was $5.76, $7.24 and $5.87, respectively. The fair value of the employees’ purchase rights was estimated using the Black-Scholes option-pricing model with the following weighted average assumptions:


	Years Ended December 31,
	2013			2012			2011
Employee stock purchase rights:
Expected life (years)		0.5			0.5			0.5
Risk-free interest rate		0.1	%		0.1	%		0.2	%
Expected volatility		27.7	%		32.2	%		31.9	%
Expected annual dividends per share	$	0.64		$	0.62		$	0.60

Expected volatilities for 2013, 2012 and 2011 are based on a combination of implied and historical volatilities of the Company’s Common Stock; the expected life represents the weighted average period of time that options granted are expected to be outstanding giving consideration to vesting schedules and the Company’s historical exercise patterns; and the risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant for periods corresponding with the expected life of the option.

The total intrinsic value of options exercised and the total fair value of shares vested during 2013, 2012 and 2011 was approximately $19,221, $16,498 and $27,199, respectively. As of December 31, 2013, the unrecognized compensation cost related to restricted stock was approximately $10,934, and will be recognized over an estimated weighted average amortization period of 1.33 years.

Employee Benefit Plans

12 Months Ended

Dec. 31, 2013

Postemployment Benefits [Abstract]

Employee Benefit Plans

19)

Employee Benefit Plans

The Company has a 401(k) profit-sharing plan for U.S. employees meeting certain requirements in which eligible employees may contribute between 1% and 50% of their annual compensation to this plan, and, with respect to employees who are age 50 and older, certain specified additional amounts, limited by an annual maximum amount determined by the Internal Revenue Service. The Company, at its discretion, may provide a matching contribution of 50% of each participant’s contributions up to 6% of eligible salary. At the discretion of the board of directors, the Company may also make additional contributions for the benefit of all eligible employees. The Company’s contributions were $2,334, $2,245 and $2,276 for 2013, 2012 and 2011, respectively.

The Company has one foreign defined benefit plan which is frozen for Company contributions. The total accrual and projected benefit obligation is not material for this plan.

The Company maintains a bonus plan which provides cash awards to key employees, at the discretion of the compensation committee of the board of directors, based upon operating results and employee performance. The bonus expense was $12,258, $6,248 and $7,559 in 2013, 2012 and 2011, respectively.

The Company provides supplemental retirement benefits for certain of its officers and executive officers. The total cost of these benefits was $4,988, $3,454 and $3,931 for 2013, 2012 and 2011, respectively. The accumulated benefit obligation was $21,403 at December 31, 2013 of which $14,517 was included in other current liabilities and $6,886 was included in other long-term liabilities. The accumulated benefit obligation was $16,353 at December 31, 2012 and was included in other long-term liabilities.

In the fourth quarter of 2013, the Company’s Chief Executive Officer (“CEO”) retired. In June of 2014, the Company will make a payment of approximately $13,718 to its former CEO related to these accrued supplemental retirement benefits.

Net Income Per Share

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Net Income Per Share

20)

Net Income Per Share

Basic earnings per share (“EPS”), is computed by dividing income available to common stockholders by the weighted-average number of common shares outstanding during the period. The computation of diluted EPS is similar to the computation of basic EPS except that the denominator is increased to include the number of additional common shares that would have been outstanding (using the treasury stock method), if securities containing potentially dilutive common shares (stock options and restricted stock units) had been converted to such common shares, and if such assumed conversion is dilutive.

The following is a reconciliation of basic to diluted net income per share:


	Years Ended December 31,
	2013		2012		2011
Numerator:
Net income	$	35,776	$	48,029	$	129,731

Denominator:
Shares used in net income per common share — basic		53,061,000		52,686,000		52,169,000
Effect of dilutive securities:
Stock options, restricted stock and employee stock purchase plan		420,000		548,000		678,000

Shares used in net income per common share — diluted		53,481,000		53,234,000		52,847,000

Net income per common share:
Basic	$	0.67	$	0.91	$	2.49
Diluted	$	0.67	$	0.90	$	2.45

As of December 31, 2013, 2012 and 2011, stock options and restricted stock units relating to an aggregate of approximately 868,000, 1,198,000 and 1,536,000 shares, respectively, were outstanding. In 2013, 2012 and 2011, the potential dilutive effect of 83,000, 204,000 and 259,000 weighted average shares, respectively, of stock options were excluded from the computation of diluted weighted-average shares outstanding as the shares would have an anti-dilutive effect on EPS.

Business Segment, Geographic Area, Product and Significant Customer Information

12 Months Ended

Dec. 31, 2013

Segment Reporting [Abstract]

Business Segment, Geographic Area, Product and Significant Customer Information

21)

Business Segment, Geographic Area, Product and Significant Customer Information

The Company develops, manufactures, sells and services products that measure, control, power and monitor critical parameters of advanced manufacturing processes. The Company’s Chief Operating Decision Maker (“CODM”) utilizes consolidated financial information to make decisions about allocating resources and assessing performance for the entire Company. In addition, certain disaggregated financial information is also provided to the CODM. Based upon the information provided to the CODM, the Company has determined it has eight operating segments and four reportable segments.

The eight operating segments are PFMC Products, Controls Products, ASTeX Products, ENI Products, HPS Products (Vacuum Products), Analytical Solutions Group, Europe Region Sales & Service and Asia Region Sales & Service.

PFMC Products, Controls Products, ASTeX Products, ENI Products and HPS Products comprise a single reportable segment due to the similarities of the segments. This reportable segment, Advanced Manufacturing Capital Equipment, includes the development, manufacturing, sales and servicing of instruments and control products, power and reactive gas products and vacuum products, all of which are utilized in semiconductor processing and other similar advanced manufacturing processes. Sales in this segment include both external sales and intercompany sales (which are stated at agreed upon transfer prices). External sales of these products made in Europe or Asia are reported as sales in the Europe Region Sales & Service or Asia Region Sales & Service segments.

Analytical Solutions Group, Europe Region Sales & Service and Asia Region Sales & Service are each separate reportable segments. The Company has reported corporate expenses and certain intercompany pricing transactions in a Corporate, Eliminations and Other reconciling column. The Analytical Solutions Group includes gas composition analysis and information technology products and custom fabrication services. The Europe and Asia sales and service segments mainly resell and service the Advanced Manufacturing Capital Equipment and Analytical Solutions Group products sold in their respective regions.

MKS derives the segment results directly from the manner in which results are reported in its management reporting system. The accounting policies MKS uses to derive reportable segment results are substantially the same as those used for external reporting purposes except that a substantial portion of the sales of the Advanced Manufacturing Capital Equipment and Analytical Solutions Group segments are intercompany sales to the regions at tax-based transfer prices and certain significant costs, including stock-based compensation and management incentive compensation, are not allocated to the segments and are included in Corporate, Eliminations and Other. The CODM reviews several metrics of each operating segment, including net revenues and gross profit (loss).

The following is net revenues by reportable segment:


	Years Ended December 31,
	2013			2012			2011
Advanced Manufacturing Capital Equipment	$	528,001		$	479,751		$	647,908
Analytical Solutions Group		56,324			62,765			61,303
Europe Region Sales & Service(1)		48,518			51,440			75,253
Asia Region Sales & Service(1)		218,048			229,731			305,448
Corporate, Eliminations and Other		(181,471	)		(180,179	)		(267,395	)

	$	669,420		$	643,508		$	822,517

(1)

The Europe and Asia foreign sales and service operations do not represent total geographical Europe and Asia financial information. These sales and service operations only represent the sales from the resale and service of Advanced Manufacturing Capital Equipment and Analytical Solutions Group products in their respective regions. The Advanced Manufacturing Capital Equipment and Analytical Solutions Group segments both have sales in each region. Accordingly, total geographical sales include sales from multiple reportable segments.

The following is gross profit by reportable segment:


	Years Ended December 31,
	2013			2012		2011
Advanced Manufacturing Capital Equipment	$	187,685		$	171,308	$	263,863
Analytical Solutions Group		29,431			32,741		31,800
Europe Region Sales & Service(1)		13,600			15,156		21,323
Asia Region Sales & Service(1)		42,948			36,962		45,267
Corporate, Eliminations and Other		(7,090	)		13,312		12,735

	$	266,574		$	269,479	$	374,988

(1)

The following is capital expenditures by reportable segment for the years ended December 31, 2013, 2012 and 2011:


	Product Groups				Foreign Sales & Service Operations
	Advanced Manufacturing Capital Equipment		Analytical Solutions Group		Europe		Asia		Corporate, Eliminations and Other		Total
December 31, 2013:
Capital expenditures	$	8,729	$	513	$	250	$	857	$	2,061	$	12,410

December 31, 2012:
Capital expenditures	$	11,817	$	1,228	$	132	$	886	$	3,642	$	17,705

December 31, 2011:
Capital expenditures	$	11,947	$	868	$	362	$	1,552	$	838	$	15,567

The following is depreciation and amortization expense by reportable segment for the years ended December 31, 2013, 2012 and 2011:


	Product Groups				Foreign Sales & Service Operations
	Advanced Manufacturing Capital Equipment		Analytical Solutions Group		Europe		Asia		Corporate, Eliminations and Other		Total
December 31, 2013:
Depreciation and amortization	$	11,836	$	1,252	$	348	$	1,177	$	2,489	$	17,102

December 31, 2012:
Depreciation and amortization	$	9,594	$	1,176	$	326	$	1,711	$	1,635	$	14,442

December 31, 2011:
Depreciation and amortization	$	8,143	$	1,470	$	366	$	1,539	$	1,462	$	12,980

Total income tax expense is impracticable to present by reportable segment because the necessary information is not available or used by the CODM.

The following is segment assets by reportable segment:


	Product Groups				Foreign Sales & Service Operations
	Advanced Manufacturing Capital Equipment		Analytical Solutions Group		Europe		Asia		Corporate, Eliminations and Other			Total
December 31, 2013:
Segment assets:
Accounts receivable	$	20,767	$	5,603	$	6,538	$	44,207	$	39,629		$	116,744
Inventory		117,822		4,391		4,254		25,094		(8,834	)		142,727

Total segment assets	$	138,589	$	9,994	$	10,792	$	69,301	$	30,795		$	259,471


	Product Groups				Foreign Sales & Service Operations
	Advanced Manufacturing Capital Equipment		Analytical Solutions Group		Europe		Asia		Corporate, Eliminations and Other			Total
December 31, 2012:
Segment assets:
Accounts receivable	$	9,644	$	5,889	$	5,813	$	32,088	$	28,626		$	82,060
Inventory		108,397		3,841		3,691		29,534		(10,824	)		134,639

Total segment assets	$	118,041	$	9,730	$	9,504	$	61,622	$	17,802		$	216,699

A reconciliation of segment assets to consolidated total assets is as follows:


	Years Ended December 31,
	2013		2012
Total segment assets	$	259,471	$	216,699
Cash and cash equivalents and investments		650,022		627,399
Other current assets		30,143		36,242
Property, plant and equipment, net		77,536		80,516
Goodwill and intangible assets, net		163,999		162,294
Other assets		31,847		29,412

Consolidated total assets	$	1,213,018	$	1,152,562

Information about the Company’s operations in different geographic regions is presented in the tables below. Net revenues to unaffiliated customers are based on the location in which the sale originated. Transfers between geographic areas are at negotiated transfer prices and have been eliminated from consolidated net revenues.


	Years Ended December 31,
	2013		2012		2011
Net revenues:
United States	$	363,948	$	326,894	$	391,122
Korea		75,401		64,541		29,193
Japan		56,978		81,883		106,003
Europe		77,910		85,362		115,362
Asia (excluding Korea and Japan)		95,183		84,828		180,837

	$	669,420	$	643,508	$	822,517


	Years Ended December 31,
	2013		2012
Long-lived assets:(1)
United States	$	60,700	$	62,203
Europe		5,484		5,844
Asia		13,475		14,664

	$	79,659	$	82,711

(1)	Long-lived assets include property, plant and equipment, net and certain other assets, excluding long-term income tax receivable.

Worldwide Product Information

Because the reportable segment information above does not reflect worldwide sales of the Company’s products, the Company groups its products into four groups of similar products based upon the similarity of product function. Worldwide net revenue for each group of products is as follows:


	Years Ended December 31,
	2013		2012		2011
Instruments and Control Products	$	266,838	$	258,521	$	348,735
Power and Reactive Gas Products		273,357		251,669		327,151
Vacuum Products		74,537		66,418		81,782
Analytical Solutions Group Products		54,688		66,900		64,849

	$	669,420	$	643,508	$	822,517

Sales of Instruments and Control Products, Power and Reactive Gas Products and Vacuum Products are included in the Company’s Advanced Manufacturing Capital Equipment Products segment as well as in the foreign sales and service operations because the products are sold through the foreign sales and service operations in their respective regions. Sales of the Analytical Solutions Group Products are included in the Analytical Solutions Group Products segment as well as in the foreign sales and service operations because the products are sold through the foreign sales and service operations in their respective regions.

Major Customers

The Company had two customers with net revenues greater than 10% of total net revenues in the periods shown as follows:


	Years Ended December 31,
	2013			2012			2011
Customer A		17.0	%		14.5	%		13.6	%
Customer B		12.3	%		10.1	%		6.5	%

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8984-108599

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8538-108599

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-Paragraph 29
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8864-108599

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599

+ Details

Restructurings

12 Months Ended

Dec. 31, 2013

Restructuring And Related Activities [Abstract]

Restructurings

22)

Restructurings

In the second and third quarters of 2013, the Company initiated restructuring plans to consolidate a small sales office and a small engineering facility into other MKS facilities. The plans included a small reduction in headcount. The Company recorded restructuring charges of $1,364 during 2013. The restructuring charges were primarily for severance and other charges associated with the reductions in workforce. The restructuring was substantially complete at December 31, 2013.

During the fourth quarter of 2012, the Company implemented a workforce reduction plan as a result of a continued slowdown in the business. The Company reduced its worldwide workforce by 84 people and recorded a restructuring charge of $343.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2013

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

23)

Commitments and Contingencies

During the third quarter of 2012, the Company settled litigation with shareholders of its former subsidiary for $5,316. The complaint alleged certain claims against the Company including breach of contract and implied covenants, and statutory violations. The claims sought unspecified damages and equitable relief. The Company believed that it had meritorious factual and legal defenses to the allegations raised, but reached a settlement primarily to eliminate future legal expenses related to the suit. In the second quarter of 2013, the Company recovered $1,071 from its insurance company relating to the 2012 litigation settlement.

The Company is subject to various other legal proceedings and claims, which have arisen in the ordinary course of business. In the opinion of management, the ultimate disposition of these matters will not have a material adverse effect on the Company’s results of operations, financial condition or cash flows.

The Company leases certain of its facilities and machinery and equipment under operating leases expiring in various years through 2022. Generally, the facility leases require the Company to pay maintenance, insurance and real estate taxes. Rental expense under operating leases totaled $7,896, $8,219 and $7,747 for 2013, 2012 and 2011, respectively.

Minimum lease payments under operating leases are as follows:


	Operating Leases
Year ending December 31,
2014	$	7,484
2015		5,745
2016		4,171
2017		3,862
2018		2,928
Thereafter		3,855

Total minimum lease payments	$	28,045

As of December 31, 2013, the Company has entered into purchase commitments for certain inventory components and other equipment and services used in its normal operations. The majority of these purchase commitments covered by these arrangements are for periods of less than one year and aggregate to approximately $132,018.

To the extent permitted by Massachusetts law, the Company’s Restated Articles of Organization, as amended, require the Company to indemnify any of its current or former officers or directors or any person who has served or is serving in any capacity with respect to any of the Company’s employee benefit plans. The Company believes that the estimated exposure for these indemnification obligations is currently not material. Accordingly, the Company has no material liabilities recorded for these requirements as of December 31, 2013.

The Company also enters into agreements in the ordinary course of business which include indemnification provisions. Pursuant to these agreements, the Company indemnifies, holds harmless and agrees to reimburse the indemnified party, generally its customers, for losses suffered or incurred by the indemnified party in connection with certain patent or other intellectual property infringement claims, and, in some instances, other claims, by any third party with respect to the Company’s products. The term of these indemnification obligations is generally perpetual after execution of the agreement. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is, in some instances, not contractually limited. The Company has never incurred costs to defend lawsuits or settle claims related to these indemnification obligations. As a result, the Company believes the estimated fair value of these obligations is minimal. Accordingly, the Company has no liabilities recorded for these obligations as of December 31, 2013.

As part of past acquisitions and divestitures of businesses or assets, the Company has provided a variety of indemnifications to the sellers and purchasers for certain events or occurrences that took place prior to the date of the acquisition or divestiture. Typically, certain of the indemnifications expire after a defined period of time following the transaction, but certain indemnifications may survive indefinitely. The maximum potential amount of future payments the Company could be required to make for such obligations is undeterminable at this time. Other than obligations recorded as liabilities at the time of the acquisitions, historically the Company has not made significant payments for these indemnifications. Accordingly, no material liabilities have been recorded for these obligations.

In conjunction with certain asset sales, the Company may provide routine indemnifications whose terms range in duration and often are not explicitly defined. Where appropriate, an obligation for such indemnification is recorded as a liability. Because the amounts of liability under these types of indemnifications are not explicitly stated, the overall maximum amount of the obligation under such indemnifications cannot be reasonably estimated. Other than obligations recorded as liabilities at the time of the asset sale, historically the Company has not made significant payments for these indemnifications.

Supplemental Financial Data

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Supplemental Financial Data

MKS Instruments, Inc.

Supplemental Financial Data


	Quarter Ended
	March 31		June 30		Sept. 30		Dec. 31
	(Table in thousands, except per share data) (Unaudited)
2013
Statement of Operations Data
Net sales	$	141,645	$	156,928	$	166,453	$	204,394
Gross profit		54,702		61,958		62,234		87,680
Income from operations		4,676		10,427		12,332		30,952
Net income	$	5,761	$	7,320	$	2,458	$	20,237
Net income per share:
Basic	$	0.11	$	0.14	$	0.05	$	0.38
Diluted	$	0.11	$	0.14	$	0.05	$	0.38
Cash dividends paid per common share	$	0.16	$	0.16	$	0.16	$	0.16
2012
Statement of Operations Data
Net sales	$	190,868	$	177,397	$	141,447	$	133,796
Gross profit		83,791		76,516		56,571		52,601
Income from operations		33,369		27,847		6,392		6,615
Net income	$	22,768	$	18,572	$	2,580	$	4,109
Net income per share:
Basic	$	0.43	$	0.35	$	0.05	$	0.08
Diluted	$	0.43	$	0.35	$	0.05	$	0.08
Cash dividends paid per common share	$	0.15	$	0.15	$	0.16	$	0.16

Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2013

Valuation And Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts

MKS INSTRUMENTS, INC.

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS


			Additions
Description	Balance at Beginning of Year		Charged to Costs and Expenses			Charged to Other Accounts			Deductions & Write-offs			Balance at End of Year
	(Dollars in thousands)
Accounts receivable allowance:
Years ended December 31,
2013	$	2,879	$	2,564		$	(98	)	$	2,594		$	2,751
2012	$	2,516	$	3,452		$	—		$	3,089		$	2,879
2011	$	2,557	$	3,390		$	—		$	3,431		$	2,516

			Additions
Description	Balance at Beginning of Year		Charged to Costs and Expenses			Charged to Other Accounts			Deductions			Balance at End of Year
	(Dollars in thousands)
Valuation allowance on deferred tax asset:
Years ended December 31,
2013	$	27,497	$	—		$	—		$	(395	)	$	27,102
2012	$	26,475	$	(44	)	$	1,066			—		$	27,497
2011	$	25,267	$	—		$	1,208		$	—		$	26,475

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2013
Accounting Policies [Abstract]
Revenue Recognition and Accounts Receivable Allowances	Revenue Recognition and Accounts Receivable Allowances Revenue from product sales is recorded upon transfer of title and risk of loss to the customer provided that there is evidence of an arrangement, the sales price is fixed or determinable, and collection of the related receivable is reasonably assured. In most transactions, the Company has no obligations to customers after the date products are shipped other than pursuant to warranty obligations. In some instances, the Company provides installation, training, support and services to customers after the product has been shipped. The Company does not frequently enter into arrangements with multiple deliverables however, for those revenue arrangements with multiple deliverables, the Company allocates revenue to each element based upon their relative selling price using vendor-specific objective evidence (“VSOE”), or third-party evidence (“TPE”) or based upon the relative selling price using estimated prices if VSOE or TPE does not exist. The Company then recognizes revenue on each deliverable in accordance with its policies for product and service revenue recognition. The Company provides for the estimated costs to fulfill customer warranty obligations upon the recognition of the related revenue. Shipping and handling fees, if any, billed to customers are recognized as revenue. The related shipping and handling costs are recognized in cost of sales. Accounts receivable allowances include sales returns and bad debt allowances. The Company monitors and tracks the amount of product returns and reduces revenue at the time of shipment for the estimated amount of such future returns, based on historical experience. The Company makes estimates evaluating its allowance for doubtful accounts. The Company continuously monitors collections and payments from its customers and maintains a provision for estimated credit losses based upon its historical experience and any specific customer collection issues that it has identified.
Research and Development	Research and Development Research and development costs are expensed as incurred and consist mainly of compensation related expenses and project materials. The Company’s research and development efforts include numerous projects, which generally have a duration of 3 to 30 months. Acquired in-process research and development (“IPR&D”) expenses, which are capitalized at fair value as an intangible asset until the related project is completed, are then amortized over the estimated useful life of the product. The Company monitors projects and if they are abandoned, the Company immediately writes them off.
Advertising Costs	Advertising Costs Advertising costs are expensed as incurred and were immaterial in 2013, 2012 and 2011.
Stock-Based Compensation	Stock-Based Compensation The accounting for share-based compensation expense requires the measurement and recognition of compensation expense for all share-based payment awards made to employees and directors based on estimated fair values. For restricted stock units (“RSUs”), the fair value is the fair value on the date of grant. The Company also provides employees the opportunity to purchase shares through an employee stock purchase plan. For shares issued under its employee stock purchase plan, the Company has estimated the fair value on the date of grant using the Black Scholes pricing model, which is affected by the Company’s stock price as well as assumptions regarding a number of complex and subjective variables. These variables include the Company’s expected stock price volatility over the term of the awards, expected life, risk free interest rate and expected dividends. The Company is also required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differ from those estimates. Management determined that blended volatility, a combination of historical and implied volatility, is more reflective of market conditions and a better indicator of expected volatility than historical or implied volatility alone. The assumptions used in calculating the fair value of share-based payment awards represent management’s best estimates, but these estimates involve inherent uncertainties and the application of management judgment. As a result, if factors change and the Company uses different assumptions, its stock-based compensation expense could be materially different in the future.
Other Comprehensive Income	Other Comprehensive Income For foreign subsidiaries where the functional currency is the local currency, assets and liabilities are translated into U.S. dollars at the current exchange rate on the balance sheet date. Revenue and expenses are translated at average rates of exchange prevailing during the year. Translation adjustments resulting from this process are recorded to Other Comprehensive Income (“OCI”). Unrealized gains and losses on securities classified as available-for-sale are included in accumulated other comprehensive income in consolidated stockholders’ equity. For derivative instruments designated as cash-flow hedges, the effective portion of the derivative’s gain (loss) is initially reported as a component of OCI and is subsequently recognized in earnings when the hedged exposure is recognized in earnings.
Net Income Per Share	Net Income Per Share Basic net income per share is based on the weighted average number of common shares outstanding, and diluted net income per share is based on the weighted average number of common shares outstanding and all potential dilutive common equivalent shares outstanding. The dilutive effect of options is determined under the treasury stock method using the average market price for the period. Common equivalent shares are included in the per share calculations when the effect of their inclusion would be dilutive.
Cash and Cash Equivalents and Investments	Cash and Cash Equivalents and Investments All highly liquid investments with a maturity date of three months or less at the date of purchase are considered to be cash equivalents. The appropriate classification of investments in securities is determined at the time of purchase. Debt securities that the Company does not have the intent and ability to hold to maturity are classified as “available-for-sale” and are carried at fair value. Mutual funds that are bought and held principally for the purpose of selling them in the near term are classified as “trading” and are carried at fair value. The Company reviews its investment portfolio on a monthly basis to identify and evaluate individual investments that have indications of possible impairment. The factors considered in determining whether a loss is other-than-temporary include: the length of time and extent to which fair market value has been below the cost basis, the financial condition and near-term prospects of the issuer, credit quality, and the Company’s ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in fair value.
Concentrations of Credit Risk	Concentrations of Credit Risk The Company’s significant concentrations of credit risk consist principally of cash and cash equivalents, investments, forward exchange contracts and trade accounts receivable. The Company maintains cash and cash equivalents with financial institutions including some banks with which it had borrowings. The Company maintains investments primarily in U.S. Treasury and government agency securities and corporate debt securities. The Company enters into forward currency contracts with high credit-quality financial institutions in order to minimize credit risk exposure. The Company’s customers are primarily concentrated in the semiconductor industry, and a limited number of customers account for a significant portion of the Company’s revenues. The Company regularly monitors the creditworthiness of its customers and believes it has adequately provided for potential credit loss exposures. Credit is extended for all customers based primarily on financial condition, and collateral is not required. The Company had one customer comprising 17%, 14% and 14% of net sales for 2013, 2012 and 2011, respectively and another customer comprising 12%, 10% and 7% of net sales for 2013, 2012 and 2011. During the years 2013, 2012 and 2011, approximately 68%, 62% and 61% of the Company’s net sales, respectively, were to semiconductor capital equipment manufacturers and semiconductor device manufacturers. There were two customers comprising 10% or more of the Company’s accounts receivable balance as of December 31, 2013.
Inventories	Inventories Inventories are stated at the lower of cost or market, cost being determined using a standard costing system which approximates cost based on a first-in, first-out method. The Company regularly reviews inventory quantities on hand and records a provision to write-down excess and obsolete inventory to its estimated net realizable value, if less than cost, based primarily on its estimated forecast of product demand.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are stated at cost. Expenditures for major renewals and betterments that extend the useful lives of property, plant and equipment are capitalized. Expenditures for maintenance and repairs are charged to expense as incurred. When assets are sold or otherwise disposed of, the cost and related accumulated depreciation are eliminated from the accounts and any resulting gain or loss is recognized in earnings. Depreciation is provided on the straight-line method over the estimated useful lives of twenty to thirty-one and one-half years for buildings and three to seven years for machinery and equipment, furniture and fixtures and office equipment, which includes enterprise resource planning software. Leasehold improvements are amortized over the shorter of the lease term or the estimated useful life of the leased asset.
Intangible Assets	Intangible Assets Intangible assets resulting from the acquisitions of businesses are estimated by management based on the fair value of assets acquired. These include acquired customer lists, technology, patents, trade names, covenants not to compete and IPR&D. Intangible assets are amortized from two to ten years on a straight-line basis which represents the estimated periods of benefit and the expected pattern of consumption.
Goodwill	Goodwill Goodwill is the amount by which the cost of acquired net assets exceeded the fair value of those net assets on the date of acquisition. The Company allocates goodwill to reporting units at the time of acquisition or when there is a change in the reporting structure and bases that allocation on which reporting units will benefit from the acquired assets and liabilities. Reporting units are defined as operating segments or one level below an operating segment, referred to as a component. The Company assesses goodwill for impairment on an annual basis as of October 31 or more frequently when events and circumstances occur indicating that the recorded goodwill may be impaired. The estimated fair value of the Company’s reporting units were based on discounted cash flow models derived from internal earnings and internal and external market forecasts. Determining fair value requires the exercise of significant judgment, including judgments about appropriate discount rates, perpetual growth rates and the amount and timing of expected future cash flows. Discount rates are based on a weighted average cost of capital (“WACC”), which represents the average rate a business must pay its providers of debt and equity. The WACC used to test goodwill is derived from a group of comparable companies. Assumptions in estimating future cash flows are subject to a high degree of judgment and complexity. The Company makes every effort to forecast these future cash flows as accurately as possible with the information available at the time the forecast is developed. The Company has the option of first assessing qualitative factors to determine whether it is necessary to perform the current two-step impairment test or the Company can perform the two-step impairment test without performing the qualitative assessment. For the reporting units that did not experience any significant adverse changes in their business or reporting structures or any other adverse changes, and the reporting unit’s fair value substantially exceeded its amount from the prior year assessment, the Company performed the qualitative “Step 0” assessment. In performing the qualitative Step 0 assessment, the Company considered certain events and circumstances specific to the reporting unit and to the entity as a whole, such as macroeconomic conditions, industry and market considerations, overall financial performance and cost factors when evaluating whether it is more likely than not that the fair value of the reporting unit is less than its carrying amount. For the remaining reporting units that did not meet these criteria, the Company performed the two-step goodwill impairment test. Under the two-step goodwill impairment test, the Company compared the fair value of each reporting unit to its respective carrying amount, including goodwill. If the fair value of the reporting unit exceeds the fair value, the second step of the goodwill impairment test must be completed to measure the amount of impairment loss, if any. The second step compares the implied fair value of goodwill with the carrying value of goodwill. The implied fair value is determined by allocating the fair value of the reporting unit to all of the assets and liabilities of that unit, the excess of the fair value of the amounts assigned to its assets and liabilities it the implied fair value of goodwill. If the implied fair value of goodwill is less than the carrying amount of goodwill, an impairment loss is recognized equal to the difference. As of October 31, 2013, the Company performed its annual impairment assessment of goodwill and determined that it is more likely than not that the fair values of the reporting units exceed their carrying amount.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets The Company evaluates the recoverability of its long-lived assets whenever events and changes in circumstances indicate that the carrying amount of an asset may not be fully recoverable. This periodic review may result in an adjustment of estimated depreciable lives or asset impairment. When indicators of impairment are present, the carrying values of the asset are evaluated in relation to their operating performance and future undiscounted cash flows of the underlying business. If the future undiscounted cash flows are less than their carrying value, impairment exists. The impairment is measured as the difference between the carrying value and the fair value of the underlying asset. Fair values are based on estimates of market prices and assumptions concerning the amount and timing of estimated future cash flows and assumed discount rates, reflecting varying degrees of perceived risk.
Foreign Exchange	Foreign Exchange The functional currency of the majority of the Company’s foreign subsidiaries is the applicable local currency. For those subsidiaries, assets and liabilities are translated to U.S. dollars at year-end exchange rates. Income and expense accounts are translated at the average exchange rates prevailing during the year. The resulting translation adjustments are included in accumulated other comprehensive income in consolidated stockholders’ equity. Foreign exchange transaction gains and losses, which arise from transaction activity, are reflected in selling, general and administrative expenses in the statement of operations. Net foreign exchange gains and losses resulting from re-measurement are included in selling general and administrative expense and were a loss of $1,937, a gain of $301 and a loss of $126, respectively, for the years ended December 31, 2013, 2012 and 2011. These amounts do not reflect the corresponding gain (loss) from foreign exchange contracts. See Note 7 “Derivatives” regarding foreign exchange contracts.
Income Taxes	Income Taxes The Company records income taxes using the asset and liability method. Deferred income tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective income tax bases, and operating loss and tax credit carry forwards. On a quarterly basis, the Company evaluates both the positive and negative evidence that affects the realizability of net deferred tax assets and assesses the need for a valuation allowance. The future benefit to be derived from its deferred tax assets is dependent upon its ability to generate sufficient future taxable income to realize the assets. The Company records a valuation allowance to reduce its net deferred tax assets to the amount that is more likely than not to be realized. To the extent the Company establishes a valuation allowance an expense will be recorded as a component of the provision for income taxes on the statement of operations. As of December 31, 2011, the Company had a valuation allowance of $26,475 primarily related to capital losses incurred from its divested operations, and state tax credit carry forwards. During 2012, the Company increased its valuation allowance by $1,022 primarily related to an increase in state tax credit carry forwards as management determined it is more likely than not that the deferred tax assets related to these attributes will not be realized. As a result, the valuation allowance was $27,497 at December 31, 2012. During 2013, the Company decreased its valuation allowance by $395 primarily related to the expiration of US capital loss carry forwards. As a result, the valuation allowance was $27,102 at December 31, 2013. Accounting for income taxes requires a two-step approach to recognize and measure uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if, based on the technical merits, it is more likely than not that the position will be sustained upon audit, including resolutions of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement. The Company re-evaluates these uncertain tax positions on a quarterly basis. This evaluation is based on factors including, but not limited to, changes in facts or circumstances, changes in tax law, effectively settled issues under audit and new audit activity. Any change in these factors could result in the recognition of a tax benefit or an additional charge to the tax provision.
Recently Issued Accounting Pronouncements	On July 18, 2013, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) 2013-11, “Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carry-forward, a Similar Tax Loss, or a Tax Credit Carry-forward Exists.” Under the new standard, unrecognized tax benefits will be netted against all available same-jurisdiction loss or other tax carry-forwards that would be utilized, rather than only against carry-forwards that are created by unrecognized tax benefits. The provisions of this ASU are effective for interim and annual periods beginning on or after December 15, 2013. The adoption of ASU No. 2013-11 is not expected to have a material effect on the Company’s consolidated financial statements.

Basis of Presentation (Tables)

12 Months Ended

Dec. 31, 2013

Revisions in Balance Sheet Line Items [Member]

Summary of Revisions and Reconciliations of Prior Period Financial Statements

The tables below reflect the revisions in the balance sheet line items for the periods ended December 31, 2012.


	December 31, 2012
	As previously reported		Adjustment		As revised
Other assets	$	11,692	$	17,720	$	29,412
Other liabilities	$	43,375	$	17,720	$	61,095

Revisions in Other Assets and Liabilities Sections [Member]

Summary of Revisions and Reconciliations of Prior Period Financial Statements

The tables below reflect the sections in certain footnotes that were affected by the revision for the periods ended December 31, 2012.


	December 31, 2012
Other Assets	As previously reported		Adjustment		As revised
Deferred tax assets, net	$	9,497	$	—	$	9,497
Long-term income tax receivable		—		17,720		17,720
Other		2,195		—		2,195

	$	11,692	$	17,720	$	29,412


	December 31, 2012
Other Liabilities	As previously reported		Adjustment		As revised
Long-term income tax payable	$	20,880	$	17,720	$	38,600
Accrued compensation		18,750		—		18,750
Other		3,745		—		3,745

	$	43,375	$	17,720	$	61,095

Revisions in IncomeTaxes [Member]

Summary of Revisions and Reconciliations of Prior Period Financial Statements


	December 31, 2012
Income Taxes	As previously reported		Adjustment			As revised
Current taxes:
United States	$	10,431	$	4,314		$	14,745
State		783		—			783
Foreign		12,074		(4,314	)		7,760

	$	23,288	$	—		$	23,288

	December 31, 2011
	As previously reported		Adjustment			As revised
Current taxes:
United States	$	25,824	$	15,032		$	40,856
State		2,602		—			2,602
Foreign		20,346		(15,032	)		5,314

	$	48,772	$	—		$	48,772

Reconciliations of Segment Assets to Consolidated Assets [Member]

Summary of Revisions and Reconciliations of Prior Period Financial Statements

Segment Note

A reconciliation of segment assets to consolidated total assets is as follows:


	December 31, 2012
	As previously reported		Adjustment		As revised
Total segment assets	$	216,699	$	—	$	216,699
Cash and cash equivalents and investments		627,399		—		627,399
Other current assets		36,242		—		36,242
Property, plant and equipment, net		80,516		—		80,516
Goodwill and intangible assets, net		162,294		—		162,294
Other assets		11,692		17,720		29,412

Consolidated total assets	$	1,134,842	$	17,720	$	1,152,562

Investments (Tables)

12 Months Ended

Dec. 31, 2013

Investments Debt And Equity Securities [Abstract]

Fair Value of Short-term Available-for-Sale and Trading Investments

The fair value of short-term investments with maturities or estimated lives of less than one year consists of the following:


	Years Ended December 31,
	2013		2012
Available-for-sale investments:
Time deposits	$	3,439	$	52
Bankers acceptance drafts		491		242
Commercial paper and certificates of deposit		114,984		—
Corporate obligations		18,351		—
U.S. treasury obligations		—		13,054
U.S. agency obligations		162,450		313,514

		299,715		326,862
Trading investments:
Mutual funds (1)		1,000		791

	$	300,715	$	327,653

(1)	The mutual funds are associated with the Company’s supplemental defined contribution retirement obligations.

Fair Value of Long-term Available-for-Sale Investments

The fair value of long-term available-for-sale investments with maturities or estimated lives of more than one year consists of the following:


	Years Ended December 31,
	2013		2012
Time deposits	$	54	$	—
U.S. agency obligations		60,351		12,158

	$	60,405	$	12,158

Gross Unrealized Gains and (Losses) Aggregated by Investment Category Short-Term and Long-Term Securities

The following table shows the gross unrealized gains and (losses) aggregated by investment category for short-term and long-term available-for-sale investments:


	Cost		Gross Unrealized Gains		Gross Unrealized (Losses)			Estimated Fair Value
As of December 31, 2013:
Short-term investments:
Available-for-sale investments:
Time deposits	$	3,439	$	—	$	—		$	3,439
Bankers acceptance drafts		491		—		—			491
Commercial paper and certificates of deposit		114,973		15		(4	)		114,984
Corporate obligations		18,360		—		(9	)		18,351
U.S. agency obligations		162,430		22		(2	)		162,450

	$	299,693	$	37	$	(15	)	$	299,715

Long-term investments:
Time deposits	$	54	$	—	$	—		$	54
U.S. agency obligations		60,374		9		(32	)		60,351

	$	60,428	$	9	$	(32	)	$	60,405


	Cost		Gross Unrealized Gains		Gross Unrealized (Losses)			Estimated Fair Value
As of December 31, 2012:
Short-term investments:
Available-for-sale investments:
Time deposits	$	52	$	—	$	—		$	52
Bankers acceptance drafts		242		—		—			242
U.S. treasury obligations		13,045		9		—			13,054
U.S. agency obligations		313,262		258		(6	)		313,514

	$	326,601	$	267	$	(6	)	$	326,862

Long-term investments:
U.S. agency obligations	$	12,156	$	2	$	—		$	12,158

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis

Assets and liabilities of the Company measured at fair value on a recurring basis as of December 31, 2013, are summarized as follows:


			Fair Value Measurements at Reporting Date Using
Description	December 31, 2013		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents:
Money market funds	$	38,166	$	38,166	$	—	$	—
Bankers acceptance drafts		32		—		32		—
Commercial paper and certificates of deposit		10,400		—		10,400		—
Trading securities:
Mutual funds		1,000		1,000		—		—
Available-for-sale securities:
Time deposits		3,493		—		3,493		—
Bankers acceptance drafts		491		—		491		—
Commercial paper and certificates of deposit		114,984		—		114,984		—
Corporate obligations		18,351		—		18,351		—
U.S. agency obligations		222,801		—		222,801		—
Derivatives — currency forward contracts		920		—		920		—

Total assets	$	410,638	$	39,166	$	371,472	$	—

Liabilities:
Derivatives — currency forward contracts	$	656	$	—	$	656	$	—

Reported as follows:
Assets:
Cash and cash equivalents (1)	$	48,598	$	38,166	$	10,432	$	—
Short-term investments		300,715		1,000		299,715		—
Other current assets		920		—		920		—

	$	350,233	$	39,166	$	311,067	$	—

Long-term investments	$	60,405	$	—	$	60,405	$	—

Liabilities:
Other current liabilities	$	656	$	—	$	656	$	—

(1)	The cash and cash equivalent amounts presented in the table above do not include cash of $234,675 and non-negotiable time deposits of $5,629 as of December 31, 2013.

Assets and liabilities of the Company measured at fair value on a recurring basis as of December 31, 2012, are summarized as follows:


			Fair Value Measurements at Reporting Date Using
Description	December 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents:
Money market funds	$	51,291	$	51,291	$	—	$	—
Bankers acceptance drafts		16		—		16		—
Trading securities:
Mutual funds		791		791		—		—
Available-for-sale securities:
Bankers acceptance drafts		242		—		242		—
U.S. treasury obligations		13,054		—		13,054		—
U.S. agency obligations		325,672		295,665		30,007		—
Derivatives — currency forward contracts		961		—		961		—

Total assets	$	392,027	$	347,747	$	44,280	$	—

Liabilities:
Derivatives — currency forward contracts	$	1,310	$	—	$	1,310	$	—

Reported as follows:
Assets:
Cash and cash equivalents (1)	$	51,307	$	51,291	$	16	$	—
Short-term investments (2)		327,601		284,298		43,303		—
Other current assets		961		—		961		—

	$	379,869	$	335,589	$	44,280	$	—

Long-term investments	$	12,158	$	12,158	$	—	$	—

Liabilities:
Other current liabilities	$	1,310	$	—	$	1,310	$	—

(1)	The cash and cash equivalent amounts presented in the table above do not include cash of $185,143 and non-negotiable time deposits of $51,138 as of December 31, 2012.

(2)	The short-term investments presented in the table above do not include non-negotiable time deposits of $52 as of December 31, 2012.

Derivatives (Tables)

12 Months Ended

Dec. 31, 2013

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Summary of Primary Net Hedging Positions and Corresponding Fair Values

The following tables provide a summary of the primary net hedging positions and corresponding fair values held as of December 31, 2013 and 2012:


	December 31, 2013
Currency Hedged (Buy/Sell)	Gross Notional Value		Fair Value(1)
U.S. Dollar/Japanese Yen	$	7,191	$	920
U.S. Dollar/South Korean Won		9,254		(521	)
U.S. Dollar/Euro		2,806		(85	)
U.S. Dollar/U.K. Pound Sterling		1,767		(50	)

Total	$	21,018	$	264


	December 31, 2012
Currency Hedged (Buy/Sell)	Gross Notional Value		Fair Value (1)
U.S. Dollar/Japanese Yen	$	13,992	$	961
U.S. Dollar/South Korean Won		19,374		(1,180	)
U.S. Dollar/Euro		4,217		(57	)
U.S. Dollar/U.K. Pound Sterling		3,865		(73	)

Total	$	41,448	$	(349	)

(1)	Represents the net receivable (payable) amount included in the consolidated balance sheet.

Summary of Fair Value Amounts of Company's Derivative Instruments

The following table provides a summary of the fair value amounts of the Company’s derivative instruments:


	Years Ended December 31,
Derivatives Designated as Hedging Instruments	2013			2012
Derivative assets:
Forward exchange contracts	$	920		$	961
Derivative liabilities:
Forward exchange contracts		(656	)		(1,310	)

Total net derivative asset (liability) designated as hedging instruments (1)	$	264		$	(349	)

(1)

Summary of Gains (Losses) on Derivatives Designated as Hedging Instruments

The following table provides a summary of the gains (losses) on derivatives designated as hedging instruments:


	Years Ended December 31,
Derivatives Designated as Cash Flow Hedging Relationships	2013			2012			2011
Forward exchange contracts:
Net (loss) gain recognized in OCI (1)	$	(48	)	$	936		$	4,311
Net gain (loss) reclassified from accumulated OCI into income (2)	$	1,086		$	(930	)	$	(4,021	)

(1)	Net change in the fair value of the effective portion classified in OCI.

(2)	Effective portion classified as cost of products in 2013 and selling, general and administrative in 2012 and 2011.

Summary of (Losses) on Derivatives Not Designated as Hedging Instruments

The following table provides a summary of (losses) on derivatives not designated as hedging instruments:


	Years Ended December 31,
Derivatives Not Designated as Hedging Instruments	2013			2012			2011
Forward exchange contracts:
Net (loss) recognized in income (1)	$	(215	)	$	(1,606	)	$	—

(1)	The Company has a forward foreign exchange contract that hedges an intercompany loan with its Korean subsidiary. This hedge does not qualify for hedge accounting and any gains (losses) are recorded immediately in selling, general and administrative expenses.

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41641-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41678-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41638-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579240-113959

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41620-113959

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(n)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Inventories (Tables)

12 Months Ended

Dec. 31, 2013

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories consist of the following:


	Years Ended December 31,
	2013		2012
Raw material	$	75,687	$	76,610
Work-in-process		24,304		19,708
Finished goods		42,736		38,321

	$	142,727	$	134,639

Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2013

Property Plant And Equipment [Abstract]

Summary of Property, Plant and Equipment

Property, plant and equipment consist of the following:


	Years Ended December 31,
	2013		2012
Land	$	9,225	$	9,188
Buildings		68,569		68,831
Machinery and equipment		116,475		115,032
Furniture and fixtures, office equipment and software		59,068		51,669
Leasehold improvements		20,590		18,003
Construction in progress		3,702		9,227

		277,629		271,950
Less: accumulated depreciation		200,093		191,434

	$	77,536	$	80,516

Acquisitions (Tables)

12 Months Ended

Dec. 31, 2013

Plasmart, Inc. [Member]

Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed

The following table summarizes the estimated fair value of the assets acquired and liabilities assumed at the date of the acquisition.


Current assets	$	5,536
Property, plant and equipment		3,565
Other assets		554
Intangible assets		10,745
Goodwill		9,989

Total assets acquired	$	30,389

Debt (Note 15)		4,561
Deferred taxes and other liabilities		3,128

Total liabilities assumed	$	7,689
Total purchase price	$	22,700
Cash acquired		(93	)

Total purchase price, net of cash acquired	$	22,607

Allocation of Acquired Intangible Assets and Related Estimates of Useful Lives

The following table reflects the allocation of the acquired intangible assets and related estimates of useful lives. These acquired intangibles will be amortized on a straight-line basis.


Current developed technology	$	5,029	7.5 – 9.5 years useful life
Trade names		335	7 year useful life
Customer relationships		5,381	10 year useful life

	$	10,745

Alter [Member]

Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed

The following table summarizes the estimated fair value of the assets acquired and liabilities assumed at the date of the acquisition:


Current assets	$	1,053
Property and equipment		211
Intangible assets		2,806
Other assets		67

Total assets acquired		4,137

Debt (Note 15)		770
Deferred taxes and other liabilities		920

Total liabilities assumed		1,690
Total purchase price		2,447
Cash acquired		(21	)

Total purchase price, net of cash acquired	$	2,426

Allocation of Acquired Intangible Assets and Related Estimates of Useful Lives

The following table reflects the allocation of the acquired intangible assets and related estimates of useful lives. These acquired intangibles will be amortized on a straight-line basis.

Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2013

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill

The changes in the carrying amount of goodwill and accumulated impairment losses were as follows:


	2013							2012
	Gross Carrying Amount		Accumulated Impairment Loss			Net		Gross Carrying Amount		Accumulated Impairment Loss			Net
Beginning balance at January 1	$	290,147	$	(139,414	)	$	150,733	$	279,498	$	(139,414	)	$	140,084
Acquired goodwill(1)		—		—			—		9,989		—			9,989
Foreign currency translation		176		—			176		660		—			660

Ending balance at December 31	$	290,323	$	(139,414	)	$	150,909	$	290,147	$	(139,414	)	$	150,733

(1)	On August 29, 2012, the Company purchased Plasmart, Inc. for $22,607, net of cash acquired. The Company recorded $9,989 of goodwill in connection with the acquisition.

Goodwill Associated with Reportable Segments

Goodwill associated with each of our reportable segments is as follows:


	Years Ended December 31,
	2013		2012
Reportable segment:
Advanced Manufacturing Capital Equipment	$	142,241	$	142,065
Analytical Solutions Group		8,668		8,668
Europe Region Sales & Service		—		—
Asia Region Sales & Service		—		—

Total goodwill	$	150,909	$	150,733

Intangible Assets

Components of the Company’s acquired intangible assets are comprised of the following:


As of December 31, 2013	Gross		Accumulated Amortization			Foreign Currency Translation		Net
Completed technology(1)	$	84,680	$	(78,072	)	$	519	$	7,127
Customer relationships		14,571		(9,831	)		454		5,194
Patents, trademarks, trade names and other(1)		25,636		(24,951	)		84		769

	$	124,887	$	(112,854	)	$	1,057	$	13,090

(1)


As of December 31, 2012	Gross		Accumulated Amortization			Foreign Currency Translation		Net
Completed technology(1)	$	82,084	$	(77,243	)	$	254	$	5,095
Customer relationships(1)		14,571		(8,886	)		312		5,997
Patents, trademarks, trade names and other(1)		25,038		(24,587	)		18		469

	$	121,693	$	(110,716	)	$	584	$	11,561

(1)	On August 29, 2012, the Company purchased Plasmart for $22,607, net of cash acquired. The Company recorded $10,745 of separately identified intangible assets, of which $5,029 was completed technology, $5,381 was customer relationships and $335 was trade names

Estimated Amortization Expense

Aggregate amortization expense related to acquired intangible assets for the years 2013, 2012 and 2011 was $2,139, $1,036 and $1,015, respectively.


Year	Amount
2014	$	1,800
2015		1,784
2016		1,601
2017		1,570
2018		1,561
Thereafter		4,774

Other Assets (Tables)

12 Months Ended

Dec. 31, 2013

Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]

Schedule of Other Assets


	Years Ended December 31,
	2013		2012
Other Current Assets:
Income tax receivable	$	39	$	12,768
Other		16,676		15,280

Total other current assets	$	16,715	$	28,048

Other Assets:
Deferred tax assets, net	$	9,208	$	9,497
Long-term income tax receivable		20,516		17,720
Other		2,123		2,195

Total other assets	$	31,847	$	29,412

Other Liabilities (Tables)

12 Months Ended

Dec. 31, 2013

Other Liabilities Disclosure [Abstract]

Schedule of Other Liabilities


	Years Ended December 31,
	2013		2012
Other Current Liabilities:
Product warranties	$	6,956	$	8,266
Deferred revenue		5,556		9,280
Other		21,730		19,859

Total other current liabilities	$	34,242	$	37,405

Other Liabilities:
Long-term income tax payable	$	46,745	$	38,600
Accrued compensation		9,646		18,750
Other		6,682		3,745

Total other liabilities	$	63,073	$	61,095

Product Warranties (Tables)

12 Months Ended

Dec. 31, 2013

Guarantees [Abstract]

Product Warranty Activities

Product warranty activities were as follows:


	Years Ended December 31,
	2013			2012
Beginning balance	$	8,266		$	8,315
Provisions for product warranties		2,755			4,514
Direct charges to warranty liability		(3,987	)		(4,985	)
Foreign currency translation		(78	)		422

Ending balance	$	6,956		$	8,266

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Reconciliation of Company's Effective Tax Rate to U.S. Federal Statutory Rate

A reconciliation of the Company’s effective tax rate to the U.S. federal statutory rate is as follows:


	Years Ended December 31,
	2013			2012			2011
U.S. Federal income tax statutory rate		35.0	%		35.0	%		35.0	%
Federal tax credits		(1.8	)		—			(0.7	)
State income taxes, net of federal benefit		1.3			1.3			1.1
Effect of foreign operations taxed at various rates		0.3			(2.6	)		(4.1	)
Qualified production activity tax benefit		(1.4	)		(0.5	)		(1.1	)
Deferred tax asset valuation allowance		(0.7	)		1.4			0.6
Income tax charges on accumulated foreign earnings		10.9			—			—
Tax benefit related to reinstatement of tax incentives		(4.0	)		—			—
Other		0.1			1.5			(0.5	)

		39.7	%		36.1	%		30.3	%

Components of Income from Continuing Operations Before Income Taxes and Related Provision for Income Taxes

The components of income from continuing operations before income taxes and the related provision for income taxes consist of the following:


	Years Ended December 31,
	2013			2012		2011
Income from continuing operations before income taxes:
United States	$	29,546		$	28,652	$	108,474
Foreign		29,755			46,484		77,578

	$	59,301		$	75,136	$	186,052


Current taxes:
United States	$	11,338		$	14,745	$	40,856
State		1,159			783		2,602
Foreign		14,117			7,760		5,314

		26,614			23,288		48,772

Deferred taxes:
United States		(1,730	)		2,019		7,795
State and Foreign		(1,359	)		1,800		(246	)

		(3,089	)		3,819		7,549

Provision for income taxes	$	23,525		$	27,107	$	56,321

Significant Components of Deferred Tax Assets and Deferred Tax Liabilities

The significant components of the deferred tax assets and deferred tax liabilities are as follows:


	Years Ended December 31,
	2013			2012
Deferred tax assets:
Loss carry-forwards and credits	$	28,138		$	29,032
Inventory and warranty reserves		10,890			10,959
Accounts receivable and other accruals		2,615			2,647
Stock-based compensation		3,581			5,032
Executive supplemental retirement benefits		8,026			6,132
Other		63			—

Total deferred tax assets	$	53,313		$	53,802

Deferred tax liabilities:
Acquired intangible assets		(2,782	)		(5,857	)
Depreciation and amortization		(5,085	)		(4,461	)
Other		(1,202	)		(1,145	)

Total deferred tax liabilities		(9,069	)		(11,463	)

Valuation allowance		(27,102	)		(27,497	)

Net deferred tax assets	$	17,142		$	14,842

Reconciliation of Beginning and Ending Amount of Gross Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows:


	Years Ended December 31,
	2013			2012		2011
Balance at beginning of year	$	40,674		$	36,540	$	22,028
Decreases for prior years		—			—		(3	)
Increases for the current year		7,308			4,134		16,663
Reductions related to settlements with taxing authorities		—			—		(2,148	)
Reductions related to expiration of statute of limitations		(298	)		—		—

Balance at end of year	$	47,684		$	40,674	$	36,540

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Activity for RSUs

The following table presents the activity for RSUs under the Plans:


	Years Ended December 31,
	2013					2012					2011
	Non-vested RSUs			Weighted Average Grant Date Fair Value		Non-vested RSUs			Weighted Average Grant Date Fair Value		Non-vested RSUs			Weighted Average Grant Date Fair Value
Non-vested RSUs — beginning of period		942,203		$	26.58		1,115,005		$	21.50		1,327,306		$	18.34
Granted		501,954		$	26.81		426,583		$	29.14		397,492		$	30.27
Vested		(688,376	)	$	25.09		(557,314	)	$	19.01		(569,891	)	$	20.42
Forfeited or expired		(23,747	)	$	27.17		(42,071	)	$	22.36		(39,902	)	$	18.36

Non-vested RSUs — end of period		732,034		$	28.08		942,203		$	26.58		1,115,005		$	21.50

Summary of Activity for Options

The following table presents the activity for options under the Plans:


	Years Ended December 31,
	2013					2012					2011
	Options			Weighted Average Exercise Price		Options			Weighted Average Exercise Price		Options			Weighted Average Exercise Price
Outstanding — beginning of period		255,649		$	21.74		420,712		$	21.97		1,793,214		$	22.38
Exercised		(88,336	)	$	21.15		(123,650	)	$	18.78		(1,351,684	)	$	22.46
Forfeited or expired		(31,580	)	$	27.04		(41,413	)	$	32.32		(20,818	)	$	22.66

Outstanding — end of period		135,733		$	20.88		255,649		$	21.74		420,712		$	21.97

Exercisable at end of period		135,733		$	20.88		255,649		$	21.74		420,712		$	21.97

Summary of Information with Respect to Options Outstanding and Exercisable

The following table summarizes information with respect to options outstanding and exercisable under the Plans at December 31, 2013:


	Options Outstanding and Exercisable
	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (In Years)		Aggregate Intrinsic Value (In Thousands)
$14.45 – $29.93		135,733	$	20.88		0.95	$	1,227

Effect of Recording Stock-Based Compensation

The following table reflects the effect of recording stock-based compensation for the years 2013, 2012 and 2011:


	Years Ended December 31,
	2013			2012			2011
Stock-based compensation expense by type of award:
Restricted stock	$	12,982		$	11,836		$	10,126
Employee stock purchase plan		1,010			1,195			1,099

Total stock-based compensation		13,992			13,031			11,225
Tax effect on stock-based compensation		(495	)		(1,862	)		(5,019	)

Net effect on net income	$	13,497		$	11,169		$	6,206

Effect on net earnings per share:
Basic	$	0.25		$	0.21		$	0.12

Diluted	$	0.25		$	0.21		$	0.12

Pre-Tax Effect Within Consolidated Statements of Operations of Recording Stock-Based Compensation

The pre-tax effect within the consolidated statements of operations and comprehensive income of recording stock-based compensation for the years 2013, 2012 and 2011 was as follows:


	Years Ended December 31,
	2013		2012		2011
Cost of sales	$	2,038	$	1,867	$	1,511
Research and development expense		1,902		2,278		2,197
Selling, general and administrative expense		10,052		8,886		7,517

Total pre-tax stock-based compensation expense	$	13,992	$	13,031	$	11,225

Fair Value of Employees' Purchase Rights Estimated using Black-Scholes Option-Pricing Model

The fair value of the employees’ purchase rights was estimated using the Black-Scholes option-pricing model with the following weighted average assumptions:


	Years Ended December 31,
	2013			2012			2011
Employee stock purchase rights:
Expected life (years)		0.5			0.5			0.5
Risk-free interest rate		0.1	%		0.1	%		0.2	%
Expected volatility		27.7	%		32.2	%		31.9	%
Expected annual dividends per share	$	0.64		$	0.62		$	0.60

Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Reconciliation of Basic and Diluted Net Income Per Share

The following is a reconciliation of basic to diluted net income per share:


	Years Ended December 31,
	2013		2012		2011
Numerator:
Net income	$	35,776	$	48,029	$	129,731

Denominator:
Shares used in net income per common share — basic		53,061,000		52,686,000		52,169,000
Effect of dilutive securities:
Stock options, restricted stock and employee stock purchase plan		420,000		548,000		678,000

Shares used in net income per common share — diluted		53,481,000		53,234,000		52,847,000

Net income per common share:
Basic	$	0.67	$	0.91	$	2.49
Diluted	$	0.67	$	0.90	$	2.45

Business Segment, Geographic Area, Product and Significant Customer Information (Tables)

12 Months Ended

Dec. 31, 2013

Segment Reporting [Abstract]

Net Revenues by Reportable Segment

The following is net revenues by reportable segment:


	Years Ended December 31,
	2013			2012			2011
Advanced Manufacturing Capital Equipment	$	528,001		$	479,751		$	647,908
Analytical Solutions Group		56,324			62,765			61,303
Europe Region Sales & Service(1)		48,518			51,440			75,253
Asia Region Sales & Service(1)		218,048			229,731			305,448
Corporate, Eliminations and Other		(181,471	)		(180,179	)		(267,395	)

	$	669,420		$	643,508		$	822,517

(1)

Schedule of Gross Profit (Loss) by Reportable Segment

The following is gross profit by reportable segment:


	Years Ended December 31,
	2013			2012		2011
Advanced Manufacturing Capital Equipment	$	187,685		$	171,308	$	263,863
Analytical Solutions Group		29,431			32,741		31,800
Europe Region Sales & Service(1)		13,600			15,156		21,323
Asia Region Sales & Service(1)		42,948			36,962		45,267
Corporate, Eliminations and Other		(7,090	)		13,312		12,735

	$	266,574		$	269,479	$	374,988

(1)

Schedule of Capital Expenditures, Depreciation and Amortization Expense and Segment Assets by Reportable Segment

The following is capital expenditures by reportable segment for the years ended December 31, 2013, 2012 and 2011:


	Product Groups				Foreign Sales & Service Operations
	Advanced Manufacturing Capital Equipment		Analytical Solutions Group		Europe		Asia		Corporate, Eliminations and Other		Total
December 31, 2013:
Capital expenditures	$	8,729	$	513	$	250	$	857	$	2,061	$	12,410

December 31, 2012:
Capital expenditures	$	11,817	$	1,228	$	132	$	886	$	3,642	$	17,705

December 31, 2011:
Capital expenditures	$	11,947	$	868	$	362	$	1,552	$	838	$	15,567

The following is depreciation and amortization expense by reportable segment for the years ended December 31, 2013, 2012 and 2011:


	Product Groups				Foreign Sales & Service Operations
	Advanced Manufacturing Capital Equipment		Analytical Solutions Group		Europe		Asia		Corporate, Eliminations and Other		Total
December 31, 2013:
Depreciation and amortization	$	11,836	$	1,252	$	348	$	1,177	$	2,489	$	17,102

December 31, 2012:
Depreciation and amortization	$	9,594	$	1,176	$	326	$	1,711	$	1,635	$	14,442

December 31, 2011:
Depreciation and amortization	$	8,143	$	1,470	$	366	$	1,539	$	1,462	$	12,980

Total income tax expense is impracticable to present by reportable segment because the necessary information is not available or used by the CODM.

The following is segment assets by reportable segment:


	Product Groups				Foreign Sales & Service Operations
	Advanced Manufacturing Capital Equipment		Analytical Solutions Group		Europe		Asia		Corporate, Eliminations and Other			Total
December 31, 2013:
Segment assets:
Accounts receivable	$	20,767	$	5,603	$	6,538	$	44,207	$	39,629		$	116,744
Inventory		117,822		4,391		4,254		25,094		(8,834	)		142,727

Total segment assets	$	138,589	$	9,994	$	10,792	$	69,301	$	30,795		$	259,471


	Product Groups				Foreign Sales & Service Operations
	Advanced Manufacturing Capital Equipment		Analytical Solutions Group		Europe		Asia		Corporate, Eliminations and Other			Total
December 31, 2012:
Segment assets:
Accounts receivable	$	9,644	$	5,889	$	5,813	$	32,088	$	28,626		$	82,060
Inventory		108,397		3,841		3,691		29,534		(10,824	)		134,639

Total segment assets	$	118,041	$	9,730	$	9,504	$	61,622	$	17,802		$	216,699

Reconciliation of Segment Assets to Consolidated Total Assets

A reconciliation of segment assets to consolidated total assets is as follows:


	Years Ended December 31,
	2013		2012
Total segment assets	$	259,471	$	216,699
Cash and cash equivalents and investments		650,022		627,399
Other current assets		30,143		36,242
Property, plant and equipment, net		77,536		80,516
Goodwill and intangible assets, net		163,999		162,294
Other assets		31,847		29,412

Consolidated total assets	$	1,213,018	$	1,152,562

Schedule of Net Revenue and Long-Lived Assets by Geographic Regions

Transfers between geographic areas are at negotiated transfer prices and have been eliminated from consolidated net revenues.


	Years Ended December 31,
	2013		2012		2011
Net revenues:
United States	$	363,948	$	326,894	$	391,122
Korea		75,401		64,541		29,193
Japan		56,978		81,883		106,003
Europe		77,910		85,362		115,362
Asia (excluding Korea and Japan)		95,183		84,828		180,837

	$	669,420	$	643,508	$	822,517


	Years Ended December 31,
	2013		2012
Long-lived assets:(1)
United States	$	60,700	$	62,203
Europe		5,484		5,844
Asia		13,475		14,664

	$	79,659	$	82,711

(1)	Long-lived assets include property, plant and equipment, net and certain other assets, excluding long-term income tax receivable.

Worldwide Net Revenue for Each Group of Products

Worldwide net revenue for each group of products is as follows:


	Years Ended December 31,
	2013		2012		2011
Instruments and Control Products	$	266,838	$	258,521	$	348,735
Power and Reactive Gas Products		273,357		251,669		327,151
Vacuum Products		74,537		66,418		81,782
Analytical Solutions Group Products		54,688		66,900		64,849

	$	669,420	$	643,508	$	822,517

Customers with Net Revenues Greater than 10% of Total Net Revenues

The Company had two customers with net revenues greater than 10% of total net revenues in the periods shown as follows:


	Years Ended December 31,
	2013			2012			2011
Customer A		17.0	%		14.5	%		13.6	%
Customer B		12.3	%		10.1	%		6.5	%

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2013

Commitments And Contingencies Disclosure [Abstract]

Minimum Lease Payments under Operating Leases

Minimum lease payments under operating leases are as follows:


	Operating Leases
Year ending December 31,
2014	$	7,484
2015		5,745
2016		4,171
2017		3,862
2018		2,928
Thereafter		3,855

Total minimum lease payments	$	28,045

Supplemental Financial Data (Tables)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Schedule of Supplemental Financial Data

MKS Instruments, Inc.

Supplemental Financial Data


	Quarter Ended
	March 31		June 30		Sept. 30		Dec. 31
	(Table in thousands, except per share data) (Unaudited)
2013
Statement of Operations Data
Net sales	$	141,645	$	156,928	$	166,453	$	204,394
Gross profit		54,702		61,958		62,234		87,680
Income from operations		4,676		10,427		12,332		30,952
Net income	$	5,761	$	7,320	$	2,458	$	20,237
Net income per share:
Basic	$	0.11	$	0.14	$	0.05	$	0.38
Diluted	$	0.11	$	0.14	$	0.05	$	0.38
Cash dividends paid per common share	$	0.16	$	0.16	$	0.16	$	0.16
2012
Statement of Operations Data
Net sales	$	190,868	$	177,397	$	141,447	$	133,796
Gross profit		83,791		76,516		56,571		52,601
Income from operations		33,369		27,847		6,392		6,615
Net income	$	22,768	$	18,572	$	2,580	$	4,109
Net income per share:
Basic	$	0.43	$	0.35	$	0.05	$	0.08
Diluted	$	0.43	$	0.35	$	0.05	$	0.08
Cash dividends paid per common share	$	0.15	$	0.15	$	0.16	$	0.16

Business Description - Additional Information (Detail)	12 Months Ended
Business Description - Additional Information (Detail)	Dec. 31, 2013 Segment Product
Collaboration Arrangement Disclosure [Abstract]
Number of product groups \| Product	4
Number of reportable segments \| Segment	4

Basis of Presentation - Revisions in Balance Sheets Line Items (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Schedule Of Revised Financial Statement [Line Items]
Other assets	$ 31,847	$ 29,412
Other liabilities	$ 63,073	61,095
As Previously Reported [Member]
Schedule Of Revised Financial Statement [Line Items]
Other assets		11,692
Other liabilities		43,375
Adjustment [Member]
Schedule Of Revised Financial Statement [Line Items]
Other assets		17,720
Other liabilities		$ 17,720

Basis of Presentation - Revisions in Other Assets and Liabilities Sections (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Other Assets
Deferred tax assets, net	$ 9,208	$ 9,497
Long-term income tax receivable	20,516	17,720
Other	2,123	2,195
Total other assets	31,847	29,412
Other Liabilities
Long-term income tax payable	46,745	38,600
Accrued compensation	9,646	18,750
Other	6,682	3,745
Total other liabilities	$ 63,073	61,095
As Previously Reported [Member]
Other Assets
Deferred tax assets, net		9,497
Long-term income tax receivable
Other		2,195
Total other assets		11,692
Other Liabilities
Long-term income tax payable		20,880
Accrued compensation		18,750
Other		3,745
Total other liabilities		43,375
Adjustment [Member]
Other Assets
Deferred tax assets, net
Long-term income tax receivable		17,720
Other
Total other assets		17,720
Other Liabilities
Long-term income tax payable		17,720
Accrued compensation
Other
Total other liabilities		$ 17,720

Basis of Presentation - Revisions in Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current taxes:
United States	$ 11,338	$ 14,745	$ 40,856
State	1,159	783	2,602
Foreign	14,117	7,760	5,314
Current taxes, Total	$ 26,614	23,288	48,772
As Previously Reported [Member]
Current taxes:
United States		10,431	25,824
State		783	2,602
Foreign		12,074	20,346
Current taxes, Total		23,288	48,772
Adjustment [Member]
Current taxes:
United States		4,314	15,032
State
Foreign		(4,314)	(15,032)
Current taxes, Total

Basis of Presentation - Reconciliation of Segment Assets to Consolidated Total Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total segment assets	$ 259,471	$ 216,699
Cash and cash equivalents and investments		627,399
Other current assets		36,242
Property, plant and equipment, net	77,536	80,516
Goodwill and intangible assets, net		162,294
Other assets	31,847	29,412
Total assets	$ 1,213,018	1,152,562
As Previously Reported [Member]
Segment Reporting Information [Line Items]
Total segment assets		216,699
Cash and cash equivalents and investments		627,399
Other current assets		36,242
Property, plant and equipment, net		80,516
Goodwill and intangible assets, net		162,294
Other assets		11,692
Total assets		1,134,842
Adjustment [Member]
Segment Reporting Information [Line Items]
Total segment assets
Cash and cash equivalents and investments
Other current assets
Property, plant and equipment, net
Goodwill and intangible assets, net
Other assets		17,720
Total assets		$ 17,720

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2013 USD ($) Customer	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)
Schedule Of Significant Accounting Policies [Line Items]
Minimum period of company's research and development projects	3 months
Maximum period of company's research and development projects	30 months
Maximum maturity period of liquid investments	3 months
Amortization period of leasehold improvements	Shorter of the lease term or the estimated useful life of the leased asset
Increase in valuation allowance on state tax credit carryforwards	$ 395	$ 1,022	$ 1,208
Increase in valuation allowance on state tax credit carryforward, Descriptions	During 2013, the Company decreased its valuation allowance by $395 primarily related to the expiration of US capital loss carry forwards. As a result, the valuation allowance was $27,102 at December 31, 2013.	During 2012, the Company increased its valuation allowance by $1,022 primarily related to an increase in state tax credit carry forwards as management determined it is more likely than not that the deferred tax assets related to these attributes will not be realized. As a result, the valuation allowance was $27,497 at December 31, 2012.
Valuation allowance	$ 27,102	$ 27,497	26,475
Maximum percentage of recognition of tax benefits from uncertain tax positions	50.00%
Accounts Receivable [Member]
Schedule Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	10.00%
Number of customers comprising of Accounts Receivable \| Customer	2
Selling, General and Administrative Expenses [Member]
Schedule Of Significant Accounting Policies [Line Items]
Net foreign exchange gains and losses from re-measurement	$ 1,937	$ 301	$ 126
One Customer [Member] \| Sales [Member]
Schedule Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	17.00%	14.00%	14.00%
Another Customer [Member] \| Sales [Member]
Schedule Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	12.00%	10.00%	7.00%
Semiconductor Products [Member] \| Sales [Member]
Schedule Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	68.00%	62.00%	61.00%
Minimum [Member]
Schedule Of Significant Accounting Policies [Line Items]
Intangible assets amortized period	2 years
Minimum [Member] \| Building [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	20 years
Minimum [Member] \| Machinery and Equipment [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	3 years
Minimum [Member] \| Furniture and Fixtures [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	3 years
Minimum [Member] \| Office Equipment [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	3 years
Maximum [Member]
Schedule Of Significant Accounting Policies [Line Items]
Intangible assets amortized period	10 years
Maximum [Member] \| Building [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	31 years 6 months
Maximum [Member] \| Machinery and Equipment [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	7 years
Maximum [Member] \| Furniture and Fixtures [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	7 years
Maximum [Member] \| Office Equipment [Member]
Schedule Of Significant Accounting Policies [Line Items]
Estimated useful lives	7 years

Investments - Fair Value of Short-term Available-for-Sale and Trading Investments (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Schedule Of Available For Sale And Trading Securities [Line Items]
Fair value of short-term available-for-sale investments	$ 299,715	$ 326,862
Fair value of short-term investments	300,715	327,653
Time Deposits [Member]
Schedule Of Available For Sale And Trading Securities [Line Items]
Fair value of short-term available-for-sale investments	3,439	52
Bankers' Acceptance Drafts [Member]
Schedule Of Available For Sale And Trading Securities [Line Items]
Fair value of short-term available-for-sale investments	491	242
Commercial Paper and Certificates of Deposit [Member]
Schedule Of Available For Sale And Trading Securities [Line Items]
Fair value of short-term available-for-sale investments	114,984
Corporate Obligations [Member]
Schedule Of Available For Sale And Trading Securities [Line Items]
Fair value of short-term available-for-sale investments	18,351
U.S. Treasury Obligations [Member]
Schedule Of Available For Sale And Trading Securities [Line Items]
Fair value of short-term available-for-sale investments		13,054
U.S. Agency Obligations [Member]
Schedule Of Available For Sale And Trading Securities [Line Items]
Fair value of short-term available-for-sale investments	162,450	313,514
Mutual Funds [Member]
Schedule Of Available For Sale And Trading Securities [Line Items]
Fair value of short-term investments	$ 1,000	$ 791

Investments - Fair Value of Long-term Available-for-Sale Investments (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Schedule Of Available For Sale And Trading Securities [Line Items]
Fair value of long-term available-for-sale investments	$ 60,405	$ 12,158
Time Deposits [Member]
Schedule Of Available For Sale And Trading Securities [Line Items]
Fair value of long-term available-for-sale investments	54
U.S. Agency Obligations [Member]
Schedule Of Available For Sale And Trading Securities [Line Items]
Fair value of long-term available-for-sale investments	$ 60,351	$ 12,158

- Definition

Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income.

+ References + Details

Investments - Gross Unrealized Gains and (Losses) Aggregated by Investment Category Short-Term and Long-Term Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Short-term investments, Estimated Fair Value	$ 299,715	$ 326,862
Long-term investments, Estimated Fair Value	60,405	12,158
Time Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term investments, Estimated Fair Value	3,439	52
Long-term investments, Estimated Fair Value	54
Bankers' Acceptance Drafts [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term investments, Estimated Fair Value	491	242
Commercial Paper and Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term investments, Estimated Fair Value	114,984
U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term investments, Estimated Fair Value	162,450	313,514
Long-term investments, Estimated Fair Value	60,351	12,158
U.S. Treasury Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term investments, Estimated Fair Value		13,054
Corporate Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term investments, Estimated Fair Value	18,351
Short Term [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	299,693	326,601
Investments, Gross Unrealized Gains	37	267
Investments, Gross Unrealized (Losses)	(15)	(6)
Short-term investments, Estimated Fair Value	299,715	326,862
Short Term [Member] \| Time Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	3,439	52
Investments, Gross Unrealized Gains
Investments, Gross Unrealized (Losses)
Short-term investments, Estimated Fair Value	3,439	52
Short Term [Member] \| Bankers' Acceptance Drafts [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	491	242
Investments, Gross Unrealized Gains
Investments, Gross Unrealized (Losses)
Short-term investments, Estimated Fair Value	491	242
Short Term [Member] \| Commercial Paper and Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	114,973
Investments, Gross Unrealized Gains	15
Investments, Gross Unrealized (Losses)	(4)
Short-term investments, Estimated Fair Value	114,984
Short Term [Member] \| Corporate Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Short-term investments, Estimated Fair Value	18,351
Short Term [Member] \| U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	162,430	313,262
Investments, Gross Unrealized Gains	22	258
Investments, Gross Unrealized (Losses)	(2)	(6)
Short-term investments, Estimated Fair Value	162,450	313,514
Short Term [Member] \| U.S. Treasury Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost		13,045
Investments, Gross Unrealized Gains		9
Short-term investments, Estimated Fair Value		13,054
Short Term [Member] \| Corporate Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	18,360
Investments, Gross Unrealized Gains
Investments, Gross Unrealized (Losses)	(9)
Long Term [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	60,428
Investments, Gross Unrealized Gains	9
Investments, Gross Unrealized (Losses)	(32)
Long-term investments, Estimated Fair Value	60,405
Long Term [Member] \| Time Deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	54
Investments, Gross Unrealized Gains
Investments, Gross Unrealized (Losses)
Long-term investments, Estimated Fair Value	54
Long Term [Member] \| U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	60,374	12,156
Investments, Gross Unrealized Gains	9	2
Investments, Gross Unrealized (Losses)	(32)
Long-term investments, Estimated Fair Value	$ 60,351	$ 12,158

Fair Value Measurements - Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - currency forward contracts	$ 920	$ 961
Derivatives - currency forward contracts	656	1,310
Long-term investments	60,405	12,158
Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	48,598	51,307
Derivatives - currency forward contracts	920	961
Total assets	410,638	392,027
Derivatives - currency forward contracts	656	1,310
Short-term investments	300,715	327,601
Total current assets	350,233	379,869
Long-term investments	60,405	12,158
Other current liabilities	656	1,310
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	38,166	51,291
Total assets	39,166	347,747
Short-term investments	1,000	284,298
Total current assets	39,166	335,589
Long-term investments		12,158
Significant Other Observable Inputs (Level 2) [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	10,432	16
Derivatives - currency forward contracts	920	961
Total assets	371,472	44,280
Derivatives - currency forward contracts	656	1,310
Short-term investments	299,715	43,303
Total current assets	311,067	44,280
Long-term investments	60,405
Other current liabilities	656	1,310
Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	5,629	51,138
Time Deposits [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	3,493
Time Deposits [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	3,493
Money Market Funds [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	38,166	51,291
Money Market Funds [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	38,166	51,291
Bankers' Acceptance Drafts [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	32	16
Available-for-sale securities	491	242
Bankers' Acceptance Drafts [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	32	16
Available-for-sale securities	491	242
Commercial Paper and Certificates of Deposit [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	10,400
Available-for-sale securities	114,984
Commercial Paper and Certificates of Deposit [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	10,400
Available-for-sale securities	114,984
Mutual Funds [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds	1,000	791
Mutual Funds [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mutual funds	1,000	791
Corporate Obligations [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	18,351
Corporate Obligations [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	18,351
U.S. Agency Obligations [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	222,801	325,672
U.S. Agency Obligations [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		295,665
U.S. Agency Obligations [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	222,801	30,007
Other Current Assets [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - currency forward contracts	920	961
Other Current Assets [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - currency forward contracts	$ 920	961
U.S. Treasury Obligations [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		13,054
U.S. Treasury Obligations [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		$ 13,054

Fair Value Measurements - Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	$ 299,715	$ 326,862
Cash [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Not included in cash and cash equivalent amount	234,675	185,143
Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Not included in cash and cash equivalent amount	$ 5,629	51,138
Short-term investments		$ 52

Derivatives - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Maximum period for hedging a portion of forecasted foreign currency denominated intercompany sales of inventory	18 months
Gross notional values of outstanding forward foreign exchange contracts	$ 21,018	$ 41,448
Accumulated earnings period	12 months

Derivatives - Summary of Primary Net Hedging Positions and Corresponding Fair Values (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]
Currency Hedged (Buy/Sell), Gross Notional Value, Net	$ 21,018	$ 41,448
Currency Hedged (Buy/Sell), Fair Value, Asset/(Liability), Net	264	(349)
U.S. Dollar/Japanese Yen [Member]
Derivative [Line Items]
Currency Hedged (Buy/Sell), Gross Notional Value, Net	7,191	13,992
Currency Hedged (Buy/Sell), Fair Value, Asset/(Liability), Net	920	961
U.S. Dollar/South Korean Won [Member]
Derivative [Line Items]
Currency Hedged (Buy/Sell), Gross Notional Value, Net	9,254	19,374
Currency Hedged (Buy/Sell), Fair Value, Asset/(Liability), Net	(521)	(1,180)
U.S. Dollar/Euro [Member]
Derivative [Line Items]
Currency Hedged (Buy/Sell), Gross Notional Value, Net	2,806	4,217
Currency Hedged (Buy/Sell), Fair Value, Asset/(Liability), Net	(85)	(57)
U.S. Dollar/U.K. Pound Sterling [Member]
Derivative [Line Items]
Currency Hedged (Buy/Sell), Gross Notional Value, Net	1,767	3,865
Currency Hedged (Buy/Sell), Fair Value, Asset/(Liability), Net	$ (50)	$ (73)

Derivatives - Summary of Fair Value Amounts of Company's Derivative Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Forward exchange contracts, Assets	$ 920	$ 961
Forward exchange contracts, Liabilities	(656)	(1,310)
Total net derivative asset (liability) designated as hedging instruments	264	(349)
Derivatives Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Forward exchange contracts, Assets	920	961
Forward exchange contracts, Liabilities	(656)	(1,310)
Total net derivative asset (liability) designated as hedging instruments	$ 264	$ (349)

Derivatives - Summary of Fair Value Amounts of Company's Derivative Instruments (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative assets classified in other current assets	$ 920	$ 961
Derivative liabilities classified in other current liabilities	$ 656	$ 1,310

Derivatives - Summary of Gains (Losses) on Derivatives Designated as Hedging Instruments (Detail) - Forward Exchange Contracts [Member] - Cash Flow Hedging [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Net (loss) gain recognized in OCI	$ (48)	$ 936	$ 4,311
Net gain (loss) reclassified from accumulated OCI into income	$ 1,086	$ (930)	$ (4,021)

Derivatives - Summary of (Losses) on Derivatives Not Designated as Hedging Instruments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivatives not Designated as Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net (loss) recognized in income	$ (215)	$ (1,606)

Inventories - Summary of Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Raw material	$ 75,687	$ 76,610
Work-in-process	24,304	19,708
Finished goods	42,736	38,321
Inventories	$ 142,727	$ 134,639

Inventories - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Inventory Disclosure [Abstract]
Inventory related excess and obsolete charges	$ 21,671	$ 15,028	$ 14,857
Special charges for obsolete inventory	$ 6,423

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Property Plant And Equipment Useful Life And Values [Abstract]
Land	$ 9,225	$ 9,188
Buildings	68,569	68,831
Machinery and equipment	116,475	115,032
Furniture and fixtures, office equipment and software	59,068	51,669
Leasehold improvements	20,590	18,003
Construction in progress	3,702	9,227
Property, plant and equipment, gross	277,629	271,950
Less: accumulated depreciation	200,093	191,434
Property, plant and equipment, net	$ 77,536	$ 80,516

Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property Plant And Equipment Useful Life And Values [Abstract]
Depreciation of property, plant and equipment	$ 14,964	$ 13,406	$ 11,965

Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands			1 Months Ended		3 Months Ended	12 Months Ended
	Mar. 12, 2013	Aug. 29, 2012	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Business Acquisition [Line Items]
Total cash paid, net of cash acquired						$ 2,326	$ 22,607
Alter [Member]
Business Acquisition [Line Items]
Acquisition purchase price, net of cash acquired	$ 2,426
Acquisition date						Mar. 12, 2013
Total cash paid, net of cash acquired	$ 2,426		$ 2,058	$ 2,426
Cash acquired from acquisition						$ 21
Remaining cash to be paid						368
Holdback provisions paid						$ 123
Plasmart, Inc. [Member]
Business Acquisition [Line Items]
Acquisition purchase price, net of cash acquired		$ 22,607
Acquisition date						Aug. 29, 2012
Total cash paid, net of cash acquired		22,607
Acquisition related costs		1,258
Working capital adjustments					$ 1,778
Step-up inventory		$ 303

Acquisitions - Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands			1 Months Ended		12 Months Ended
	Mar. 12, 2013	Aug. 29, 2012	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Business Acquisition [Line Items]
Goodwill					$ 150,909	$ 150,733	$ 140,084
Total purchase price, net of cash acquired					$ 2,326	$ 22,607
Alter [Member]
Business Acquisition [Line Items]
Current assets	$ 1,053
Property and equipment	211
Other assets	67
Intangible assets	2,806			$ 2,806
Total assets acquired	4,137
Debt (Note 15)	770
Deferred taxes and other liabilities	920
Total liabilities assumed	1,690
Total purchase price	2,447
Cash acquired	(21)
Total purchase price, net of cash acquired	$ 2,426		$ 2,058	$ 2,426
Plasmart, Inc. [Member]
Business Acquisition [Line Items]
Current assets		$ 5,536
Property and equipment		3,565
Other assets		554
Intangible assets		10,745
Goodwill		9,989
Total assets acquired		30,389
Debt (Note 15)		4,561
Deferred taxes and other liabilities		3,128
Total liabilities assumed		7,689
Total purchase price		22,700
Cash acquired		(93)
Total purchase price, net of cash acquired		$ 22,607

Acquisitions - Allocation of Acquired Intangible Assets and Related Estimates of Useful Lives (Detail) - USD ($) $ in Thousands			1 Months Ended
	Mar. 12, 2013	Aug. 29, 2012	Aug. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets			$ 268
Alter [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 2,806
Alter [Member] \| Current Developed Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 2,208
Estimated useful life of finite lived intangible assets	9 years
Alter [Member] \| Trademarks and Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 598
Estimated useful life of finite lived intangible assets	3 years
Plasmart, Inc. [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets		$ 10,745
Plasmart, Inc. [Member] \| Current Developed Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets		5,029
Plasmart, Inc. [Member] \| Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets		$ 335
Estimated useful life of finite lived intangible assets		7 years
Plasmart, Inc. [Member] \| Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets		$ 5,381
Estimated useful life of finite lived intangible assets		10 years
Minimum [Member] \| Plasmart, Inc. [Member] \| Current Developed Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life of finite lived intangible assets		7 years 6 months
Maximum [Member] \| Plasmart, Inc. [Member] \| Current Developed Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life of finite lived intangible assets		9 years 6 months

Goodwill and Intangible Assets - Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill gross carrying amount, Beginning balance	$ 290,147	$ 279,498
Acquired goodwill, gross		9,989
Foreign currency translation	176	660
Goodwill gross carrying amount, Ending balance	290,323	290,147
Accumulated Impairment Loss, Beginning balance	(139,414)	(139,414)
Acquired goodwill, impairment loss
Foreign currency translation, impairment loss
Accumulated Impairment Loss, Ending balance	(139,414)	(139,414)
Goodwill, net, Beginning balance	150,733	140,084
Acquired goodwill, net		9,989
Foreign currency translation, net	176	660
Goodwill, net, Ending balance	$ 150,909	$ 150,733

Goodwill and Intangible Assets - Goodwill (Parenthetical) (Detail) - USD ($) $ in Thousands		12 Months Ended
	Aug. 29, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Line Items]
Acquisition purchase price, net of cash acquired		$ 2,326	$ 22,607
Goodwill		$ 150,909	$ 150,733	$ 140,084
Plasmart, Inc. [Member]
Goodwill [Line Items]
Acquisition purchase price, net of cash acquired	$ 22,607
Goodwill	$ 9,989

Goodwill and Intangible Assets - Goodwill Associated with Reportable Segments (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Reportable segment, goodwill	$ 150,909	$ 150,733	$ 140,084
Advanced Manufacturing Capital Equipment [Member]
Segment Reporting Information [Line Items]
Reportable segment, goodwill	142,241	142,065
Analytical Solutions Group [Member]
Segment Reporting Information [Line Items]
Reportable segment, goodwill	8,668	8,668
Europe Region Sales & Service Operations [Member]
Segment Reporting Information [Line Items]
Reportable segment, goodwill
Asia Region Sales & Service Operations [Member]
Segment Reporting Information [Line Items]
Reportable segment, goodwill

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill And Intangible Assets Disclosure [Abstract]
Impairment charges	$ 0	$ 0	$ 0
Aggregate amortization expense related to acquired intangibles	$ 2,139	$ 1,036	$ 1,015

Goodwill and Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	$ 124,887	$ 121,693
Accumulated Amortization	(112,854)	(110,716)
Foreign Currency Translation	1,057	584
Intangible assets, net	13,090	11,561
Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	84,680	82,084
Accumulated Amortization	(78,072)	(77,243)
Foreign Currency Translation	519	254
Intangible assets, net	7,127	5,095
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	14,571	14,571
Accumulated Amortization	(9,831)	(8,886)
Foreign Currency Translation	454	312
Intangible assets, net	5,194	5,997
Patents, Trademarks, Trade Names and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	25,636	25,038
Accumulated Amortization	(24,951)	(24,587)
Foreign Currency Translation	84	18
Intangible assets, net	$ 769	$ 469

Goodwill and Intangible Assets - Intangible Assets (Parenthetical) (Detail) - USD ($) $ in Thousands			1 Months Ended			12 Months Ended
	Mar. 12, 2013	Aug. 29, 2012	Aug. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Acquisition purchase price						$ 2,326	$ 22,607
Completed technology of net assets			$ 268
Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Completed technology of net assets			$ 388
Alter [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition purchase price	$ 2,426			$ 2,058	$ 2,426
Completed technology of net assets	2,806
Intangible asset in connection with acquisition	$ 2,806				2,806
Alter [Member] \| Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset in connection with acquisition					2,208
Alter [Member] \| Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset in connection with acquisition					$ 598
Plasmart, Inc. [Member]
Finite-Lived Intangible Assets [Line Items]
Acquisition purchase price		$ 22,607
Completed technology of net assets		10,745
Intangible asset in connection with acquisition		10,745
Plasmart, Inc. [Member] \| Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset in connection with acquisition		5,029
Plasmart, Inc. [Member] \| Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Completed technology of net assets		335
Intangible asset in connection with acquisition		335
Plasmart, Inc. [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Completed technology of net assets		5,381
Intangible asset in connection with acquisition		$ 5,381

Goodwill and Intangible Assets - Estimated Amortization Expense (Detail) $ in Thousands	Dec. 31, 2013 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2014	$ 1,800
2015	1,784
2016	1,601
2017	1,570
2018	1,561
Thereafter	$ 4,774

Other Assets - Schedule of Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Other Current Assets:
Income tax receivable	$ 39	$ 12,768
Other	16,676	15,280
Total other current assets	16,715	28,048
Other Assets:
Deferred tax assets, net	9,208	9,497
Long-term income tax receivable	20,516	17,720
Other	2,123	2,195
Total other assets	$ 31,847	$ 29,412

Other Liabilities - Schedule of Other Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Other Current Liabilities:
Product warranties	$ 6,956	$ 8,266
Deferred revenue	5,556	9,280
Other	21,730	19,859
Total other current liabilities	34,242	37,405
Other Liabilities:
Long-term income tax payable	46,745	38,600
Accrued compensation	9,646	18,750
Other	6,682	3,745
Total other liabilities	$ 63,073	$ 61,095

Product Warranties - Product Warranty Activities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Guarantees [Abstract]
Beginning balance	$ 8,266	$ 8,315
Provisions for product warranties	2,755	4,514
Direct charges to warranty liability	(3,987)	(4,985)
Foreign currency translation	(78)	422
Ending balance	$ 6,956	$ 8,266

Debt - Additional Information (Detail) $ in Thousands	12 Months Ended
Debt - Additional Information (Detail) $ in Thousands	Dec. 31, 2013 USD ($) Institution	Dec. 31, 2012 USD ($)
Japan Line of Credit [Member]
Debt Instrument [Line Items]
Number of financial institutions for available lines of credit and borrowing arrangements \| Institution	2
Aggregate borrowings expire and renewed	3 month intervals
Total available line of credit	$ 21,878
Total borrowings outstanding	0	$ 0
Plasmart Line of Credit [Member]
Debt Instrument [Line Items]
Total borrowings outstanding	$ 0	$ 0

Income Taxes - Reconciliation of Company's Effective Tax Rate to U.S. Federal Statutory Rate (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
U.S. Federal income tax statutory rate	35.00%	35.00%	35.00%
Federal tax credits	(1.80%)		(0.70%)
State income taxes, net of federal benefit	1.30%	1.30%	1.10%
Effect of foreign operations taxed at various rates	0.30%	(2.60%)	(4.10%)
Qualified production activity tax benefit	(1.40%)	(0.50%)	(1.10%)
Deferred tax asset valuation allowance	(0.70%)	1.40%	0.60%
Income tax charges on accumulated foreign earnings	10.90%
Tax benefit related to reinstatement of tax incentives	(4.00%)
Other	0.10%	1.50%	(0.50%)
Total	39.70%	36.10%	30.30%

Income Taxes - Components of Income from Continuing Operations Before Income Taxes and Related Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income from continuing operations before income taxes:
United States	$ 29,546	$ 28,652	$ 108,474
Foreign	29,755	46,484	77,578
Income before income taxes	59,301	75,136	186,052
Current taxes:
United States	11,338	14,745	40,856
State	1,159	783	2,602
Foreign	14,117	7,760	5,314
Current taxes, Total	26,614	23,288	48,772
Deferred taxes:
United States	(1,730)	2,019	7,795
State and Foreign	(1,359)	1,800	(246)
Deferred taxes, Total	(3,089)	3,819	7,549
Provision for income taxes	$ 23,525	$ 27,107	$ 56,321

Income Taxes - Significant Components of Deferred Tax Assets and Deferred Tax Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred tax assets:
Loss carry-forwards and credits	$ 28,138	$ 29,032
Inventory and warranty reserves	10,890	10,959
Accounts receivable and other accruals	2,615	2,647
Stock-based compensation	3,581	5,032
Executive supplemental retirement benefits	8,026	6,132
Other	63
Total deferred tax assets	53,313	53,802
Deferred tax liabilities:
Acquired intangible assets	(2,782)	(5,857)
Depreciation and amortization	(5,085)	(4,461)
Other	(1,202)	(1,145)
Total deferred tax liabilities	(9,069)	(11,463)
Valuation allowance	(27,102)	(27,497)	$ (26,475)
Net deferred tax assets	$ 17,142	$ 14,842

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Line Items]
Gross Massachusetts tax research other tax credit carryforwards		$ 8,689
Tax credit expiration period		2028
Gross unrecognized tax benefits excluding interest and penalties		$ 47,684	$ 40,674	$ 36,540	$ 22,028
Net unrecognized tax benefit excluding interest and penalties that would impact effective tax rate		24,758
Net benefit to income tax expense, excluding interest and penalties, due to discrete reserve releases		140		2,148
Accrued interest on unrecognized tax benefits		2,159	1,571	973
Unrecognized tax benefits related to various U.S.federal, state and foreign tax positions		12,614
Increased valuation allowance		395	$ 1,022	1,208
Undistributed earnings in foreign subsidiaries		$ 440,841
Tax holiday resulted in income tax savings				$ 1,000	$ 2,700
American Taxpayer Relief Act of 2012 [Member]
Income Taxes [Line Items]
Reduction in effective income tax rate		3.00%
Israeli Tax [Member]
Income Taxes [Line Items]
Income tax holiday tax rate		7.00%	10.00%
Scenario, Plan [Member] \| Israeli Tax [Member]
Income Taxes [Line Items]
Income tax holiday tax rate	9.00%
2015 [Member]
Income Taxes [Line Items]
U.S. Federal capital loss carryforwards		$ 59,275

Income Taxes - Reconciliation of Beginning and Ending Amount of Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Balance at beginning of year	$ 40,674	$ 36,540	$ 22,028
Decreases for prior years			(3)
Increases for the current year	7,308	4,134	16,663
Reductions related to settlements with taxing authorities			(2,148)
Reductions related to expiration of statute of limitations	(298)
Balance at end of year	$ 47,684	$ 40,674	$ 36,540

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
	Jul. 25, 2011	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity [Abstract]
Common stock, value of shares authorized to repurchase	$ 200,000
Stock repurchase, shares										107,000	434,600
Value of shares repurchased										$ 2,875	$ 11,501	$ 2,007
Average price of repurchased shares										$ 26.87	$ 26.46
Cash dividend paid		$ 0.16	$ 0.16	$ 0.16	$ 0.16	$ 0.16	$ 0.16	$ 0.15	$ 0.15	$ 0.64	$ 0.62	$ 0.60
Dividend payment to common shareholders										$ 33,975	$ 32,686	$ 31,373
Dividend declared date										Feb. 10, 2014
Cash dividend to be paid										$ 0.16
Dividend to be paid date										Mar. 14, 2014
Dividend declared, shareholders of record date										Mar. 03, 2014

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, shares issued	53,363,450	52,748,849
Weighted average remaining contractual life of options exercisable	11 months 12 days
Closing stock price per share	$ 29.92
Number of in-the-money options exercisable	105,873
Tax effect on stock-based compensation	$ 495	$ 1,862	$ 5,019
Capitalization of share based payment costs	$ 471	$ 471
Options granted	0	0	0
Total intrinsic value of options exercised	$ 684	$ 1,228	$ 9,458
Weighted average fair value per share of employee stock purchase rights, granted	$ 5.76	$ 7.24	$ 5.87
Total intrinsic value of options exercised and fair value of shares vested	$ 19,221	$ 16,498	$ 27,199
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash received from employees as a result of employee stock option exercises	1,869	2,322
Tax effect on stock-based compensation	$ 94	$ 299
Stock Incentive Plan 2004 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance	15,000,000
Shares available for future grant	10,916,285
1997 Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award vesting period description	Options granted to directors generally vested at the earliest of (1) one day prior to the next annual meeting, (2) 13 months from date of grant, or (3) the effective date of an acquisition.
Minimum [Member] \| 1997 Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	1 day
Maximum [Member] \| 1997 Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	13 months
Employee Stock Purchase Plan - Second Amended and Restated [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance	400,000
Percentage of Common Stock through payroll deductions	10.00%
Percentage of closing price of the Common Stock	85.00%
Common Stock, shares issued	33,929	29,954
Shares reserved for future issuance	62,541
Employee Stock Purchase Plan - Second Amended and Restated [Member] \| Offer Terminate [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of closing price of the Common Stock	85.00%
Employee Stock Purchase Plan - Second Amended and Restated [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, exercise price	$ 23.96	$ 22.01
Employee Stock Purchase Plan - Second Amended and Restated [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of payroll deduction	$ 21,250
Common stock, exercise price	$ 20.42	$ 22.40
Stock Incentive Plans 2001 and After [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of exercise price fair value option grant in period	100.00%
Stock options granted to employees under plans prior to 2001, vested after one year	25.00%
Stock options granted to employees under plans prior to 2001, vested per quarter thereafter	6.25%
Stock options expired	10 years
RSUs Granted to Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award vesting period description	Earliest of (1) one day prior to the next annual meeting, (2) 13 months from date of grant, or (3) the effective date of an acquisition.
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted to employees under plans prior to 2001, vested after one year	33.30%	33.30%
Stock options expired	3 years
Weighted average fair value per share of employee stock purchase rights, granted	$ 26.81	$ 29.14	$ 30.27
Restricted Stock Units (RSUs) [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	1 day
Restricted Stock Units (RSUs) [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	13 months
RSUs Granted to Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award vesting period description	Employees who are at least 60 years old and have a combined years of age plus years of service (as defined) equal to 70 years or more, are expensed immediately.
Employee Stock Purchase Plan - Third Amended and Restated [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance	1,950,000
Percentage of payroll deduction to compensation	Up to 10%
Percentage of Common Stock through payroll deductions	10.00%
Percentage of closing price of the Common Stock	85.00%
Common Stock, shares issued	138,674	141,975
Shares reserved for future issuance	212,074
Employee Stock Purchase Plan - Third Amended and Restated [Member] \| Offer Terminate [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of closing price of the Common Stock	85.00%
Employee Stock Purchase Plan - Third Amended and Restated [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, exercise price	$ 23.96	$ 22.01
Employee Stock Purchase Plan - Third Amended and Restated [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of payroll deduction	$ 21,250
Common stock, exercise price	$ 20.42	$ 22.40
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 10,934
Estimated weighted average amortization period	1 year 3 months 29 days

Stock-Based Compensation - Summary of Activity for RSUs (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Grant Date Fair Value, Granted	$ 5.76	$ 7.24	$ 5.87
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested RSUs - beginning of period	942,203	1,115,005	1,327,306
Non-vested RSUs, Granted	501,954	426,583	397,492
Non-vested RSUs, Vested	(688,376)	(557,314)	(569,891)
Non-vested RSUs, Forfeited or expired	(23,747)	(42,071)	(39,902)
Non-vested RSUs - end of period	732,034	942,203	1,115,005
Weighted Average Grant Date Fair Value, Beginning of period	$ 26.58	$ 21.50	$ 18.34
Weighted Average Grant Date Fair Value, Granted	26.81	29.14	30.27
Weighted Average Grant Date Fair Value, Vested	25.09	19.01	20.42
Weighted Average Grant Date Fair Value, Forfeited or expired	27.17	22.36	18.36
Weighted Average Grant Date Fair Value, end of period	$ 28.08	$ 26.58	$ 21.50

Stock-Based Compensation - Summary of Activity for Options (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Options, Outstanding - beginning of period	255,649	420,712	1,793,214
Options, Exercised	(88,336)	(123,650)	(1,351,684)
Options, Forfeited or expired	(31,580)	(41,413)	(20,818)
Options, Outstanding - end of period	135,733	255,649	420,712
Options, Exercisable at end of period	135,733	255,649	420,712
Weighted Average Exercise Price, Outstanding - beginning of period	$ 21.74	$ 21.97	$ 22.38
Weighted Average Exercise Price, Exercised	21.15	18.78	22.46
Weighted Average Exercise Price, Forfeited or expired	27.04	32.32	22.66
Weighted Average Exercise Price, Outstanding - end of period	20.88	21.74	21.97
Weighted Average Exercise Price, Exercisable at end of period	$ 20.88	$ 21.74	$ 21.97

Stock-Based Compensation - Summary of Information with Respect to Options Outstanding and Exercisable (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2013 USD ($) $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Shares Options Outstanding \| shares	135,733
Weighted Average Exercise Price	$ 20.88
Exercisable Weighted Average Remaining Contractual Life (In Years)	11 months 12 days
Aggregate Intrinsic Value (In Thousands) \| $	$ 1,227
Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range	$ 14.45
Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range	$ 29.93

Stock-Based Compensation - Effect of Recording Stock-Based Compensation (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock-based compensation expense by type of award:
Total stock-based compensation	$ 13,992	$ 13,031	$ 11,225
Tax effect on stock-based compensation	(495)	(1,862)	(5,019)
Net effect on net income	$ 13,497	$ 11,169	$ 6,206
Effect on net earnings per share:
Basic	$ 0.25	$ 0.21	$ 0.12
Diluted	$ 0.25	$ 0.21	$ 0.12
Restricted Stock [Member]
Stock-based compensation expense by type of award:
Total stock-based compensation	$ 12,982	$ 11,836	$ 10,126
Employee Stock Purchase Plan [Member]
Stock-based compensation expense by type of award:
Total stock-based compensation	$ 1,010	$ 1,195	$ 1,099

Stock-Based Compensation - Pre-Tax Effect Within Consolidated Statements of Operations of Recording Stock-Based Compensation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total pre-tax stock-based compensation expense	$ 13,992	$ 13,031	$ 11,225
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total pre-tax stock-based compensation expense	2,038	1,867	1,511
Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total pre-tax stock-based compensation expense	1,902	2,278	2,197
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total pre-tax stock-based compensation expense	$ 10,052	$ 8,886	$ 7,517

Stock-Based Compensation - Fair Value of Employees' Purchase Rights Estimated Using Black-Scholes Option-Pricing Model (Detail) - $ / shares	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee stock purchase rights:
Expected life (years)									6 months	6 months	6 months
Risk-free interest rate									0.10%	0.10%	0.20%
Expected volatility									27.70%	32.20%	31.90%
Expected annual dividends per share	$ 0.16	$ 0.16	$ 0.16	$ 0.16	$ 0.16	$ 0.16	$ 0.15	$ 0.15	$ 0.64	$ 0.62	$ 0.60

Employee Benefit Plans - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2013 USD ($) Age Plan	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Minimum age limit for specified additional amount \| Age	50
Employers contribution percentage limit	50.00%
Employees maximum contribution as a percentage of salary	6.00%
Company's contributions	$ 2,334	$ 2,245	$ 2,276
Foreign defined benefit plan \| Plan	1
Bonus expense	$ 12,258	6,248	7,559
Supplemental retirement benefits cost	4,988	3,454	$ 3,931
Accumulated benefit obligation	21,403	$ 16,353
Chief Executive Officer [Member]
Defined Benefit Plan Disclosure [Line Items]
Payment related to accrued supplemental retirement benefits	$ 13,718
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee contribution to Company's profit sharing plan percentage	1.00%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee contribution to Company's profit sharing plan percentage	50.00%
Other Current Liabilities [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 14,517
Other Noncurrent Liabilities [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 6,886

Net Income Per Share - Reconciliation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Numerator:
Net income	$ 20,237	$ 2,458	$ 7,320	$ 5,761	$ 4,109	$ 2,580	$ 18,572	$ 22,768	$ 35,776	$ 48,029	$ 129,731
Denominator:
Shares used in net income per common share - basic									53,061,000	52,686,000	52,169,000
Effect of dilutive securities:
Stock options, restricted stock and employee stock purchase plan									420,000	548,000	678,000
Shares used in net income per common share - diluted									53,481,000	53,234,000	52,847,000
Net income per common share:
Basic	$ 0.38	$ 0.05	$ 0.14	$ 0.11	$ 0.08	$ 0.05	$ 0.35	$ 0.43	$ 0.67	$ 0.91	$ 2.49
Diluted	$ 0.38	$ 0.05	$ 0.14	$ 0.11	$ 0.08	$ 0.05	$ 0.35	$ 0.43	$ 0.67	$ 0.90	$ 2.45

Net Income Per Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]
Stock options and restricted stock units outstanding	868,000	1,198,000	1,536,000
Number of shares excluded from computation of diluted earnings per share	83,000	204,000	259,000

Business Segment, Geographic Area, Product and Significant Customer Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2013 Customer Segment Product
Segment Reporting [Abstract]
Number of reportable segments	4
Number of operating segments	8
Number of product groups \| Product	4
Number of major customers \| Customer	2
Entity wide net revenue major customer percentage minimum	10.00%

Business Segment, Geographic Area, Product and Significant Customer Information - Net Revenues by Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Total net revenues	$ 204,394	$ 166,453	$ 156,928	$ 141,645	$ 133,796	$ 141,447	$ 177,397	$ 190,868	$ 669,420	$ 643,508	$ 822,517
Advanced Manufacturing Capital Equipment [Member]
Segment Reporting Information [Line Items]
Total net revenues									528,001	479,751	647,908
Analytical Solutions Group [Member]
Segment Reporting Information [Line Items]
Total net revenues									56,324	62,765	61,303
Europe Region Sales & Service Operations [Member]
Segment Reporting Information [Line Items]
Total net revenues									48,518	51,440	75,253
Asia Region Sales & Service Operations [Member]
Segment Reporting Information [Line Items]
Total net revenues									218,048	229,731	305,448
Corporate, Eliminations and Other [Member]
Segment Reporting Information [Line Items]
Total net revenues									$ (181,471)	$ (180,179)	$ (267,395)

Business Segment, Geographic Area, Product and Significant Customer Information - Schedule of Gross Profit (Loss) by Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Gross profit	$ 87,680	$ 62,234	$ 61,958	$ 54,702	$ 52,601	$ 56,571	$ 76,516	$ 83,791	$ 266,574	$ 269,479	$ 374,988
Advanced Manufacturing Capital Equipment [Member]
Segment Reporting Information [Line Items]
Gross profit									187,685	171,308	263,863
Analytical Solutions Group [Member]
Segment Reporting Information [Line Items]
Gross profit									29,431	32,741	31,800
Europe Region Sales & Service Operations [Member]
Segment Reporting Information [Line Items]
Gross profit									13,600	15,156	21,323
Asia Region Sales & Service Operations [Member]
Segment Reporting Information [Line Items]
Gross profit									42,948	36,962	45,267
Corporate, Eliminations and Other [Member]
Segment Reporting Information [Line Items]
Gross profit									$ (7,090)	$ 13,312	$ 12,735

Business Segment, Geographic Area, Product and Significant Customer Information - Schedule of Capital Expenditures, Depreciation and Amortization Expense and Segment Assets by Reportable Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Capital expenditures	$ 12,410	$ 17,705	$ 15,567
Depreciation and amortization	17,102	14,442	12,980
Accounts receivable	116,744	82,060
Inventory	142,727	134,639
Total segment assets	259,471	216,699
Advanced Manufacturing Capital Equipment [Member]
Segment Reporting Information [Line Items]
Capital expenditures	8,729	11,817	11,947
Depreciation and amortization	11,836	9,594	8,143
Accounts receivable	20,767	9,644
Inventory	117,822	108,397
Total segment assets	138,589	118,041
Analytical Solutions Group [Member]
Segment Reporting Information [Line Items]
Capital expenditures	513	1,228	868
Depreciation and amortization	1,252	1,176	1,470
Accounts receivable	5,603	5,889
Inventory	4,391	3,841
Total segment assets	9,994	9,730
Europe Region Sales & Service Operations [Member]
Segment Reporting Information [Line Items]
Capital expenditures	250	132	362
Depreciation and amortization	348	326	366
Accounts receivable	6,538	5,813
Inventory	4,254	3,691
Total segment assets	10,792	9,504
Asia Region Sales & Service Operations [Member]
Segment Reporting Information [Line Items]
Capital expenditures	857	886	1,552
Depreciation and amortization	1,177	1,711	1,539
Accounts receivable	44,207	32,088
Inventory	25,094	29,534
Total segment assets	69,301	61,622
Corporate, Eliminations and Other [Member]
Segment Reporting Information [Line Items]
Capital expenditures	2,061	3,642	838
Depreciation and amortization	2,489	1,635	$ 1,462
Accounts receivable	39,629	28,626
Inventory	(8,834)	(10,824)
Total segment assets	$ 30,795	$ 17,802

Business Segment, Geographic Area, Product and Significant Customer Information - Reconciliation of Segment Assets to Consolidated Total Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total assets	$ 1,213,018	$ 1,152,562
Cash and cash equivalents and investments		627,399
Other current assets	16,715	28,048
Property, plant and equipment, net	77,536	80,516
Goodwill and intangible assets, net		162,294
Other assets	31,847	29,412
Reconciliations of Segment Assets to Consolidated Assets [Member]
Segment Reporting Information [Line Items]
Total assets	259,471	216,699
Cash and cash equivalents and investments	650,022	627,399
Other current assets	30,143	36,242
Property, plant and equipment, net	77,536	80,516
Goodwill and intangible assets, net	163,999	162,294
Other assets	$ 31,847	$ 29,412

Business Segment, Geographic Area, Product and Significant Customer Information - Company Long-Lived Assets in Different Geographic Regions (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 204,394	$ 166,453	$ 156,928	$ 141,645	$ 133,796	$ 141,447	$ 177,397	$ 190,868	$ 669,420	$ 643,508	$ 822,517
Long-lived assets	79,659				82,711				79,659	82,711
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									363,948	326,894	391,122
Long-lived assets	60,700				62,203				60,700	62,203
Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									75,401	64,541	29,193
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									56,978	81,883	106,003
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									77,910	85,362	115,362
Long-lived assets	5,484				5,844				5,484	5,844
Asia (excluding Korea and Japan) [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									95,183	84,828	$ 180,837
Long-lived assets	$ 13,475				$ 14,664				$ 13,475	$ 14,664

Business Segment, Geographic Area, Product and Significant Customer Information - Worldwide Net Revenue for Each Group of Products (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue from External Customer [Line Items]
Net sales from product groups	$ 204,394	$ 166,453	$ 156,928	$ 141,645	$ 133,796	$ 141,447	$ 177,397	$ 190,868	$ 669,420	$ 643,508	$ 822,517
Instruments and Control Products [Member]
Revenue from External Customer [Line Items]
Net sales from product groups									266,838	258,521	348,735
Power and Reactive Gas Products [Member]
Revenue from External Customer [Line Items]
Net sales from product groups									273,357	251,669	327,151
Vacuum Products [Member]
Revenue from External Customer [Line Items]
Net sales from product groups									74,537	66,418	81,782
Analytical Solutions Group Products [Member]
Revenue from External Customer [Line Items]
Net sales from product groups									$ 54,688	$ 66,900	$ 64,849

Business Segment, Geographic Area, Product and Significant Customer Information - Customers with Net Revenues Greater than 10% of Total Net Revenues (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Customer A [Member]
Revenue, Major Customer [Line Items]
Percentage of total net revenues	17.00%	14.50%	13.60%
Customer B [Member]
Revenue, Major Customer [Line Items]
Percentage of total net revenues	12.30%	10.10%	6.50%

Restructurings - Additional Information (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2012 USD ($) People	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)
Reorganizations [Abstract]
Restructuring charges \| $	$ 343	$ 1,364	$ 343
Number of Reduction in the Company's headcount \| People	84

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2013	Sep. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitments And Contingencies Disclosure [Abstract]
Litigation settlement with shareholders of former subsidiary		$ 5,316		$ 5,316
Insurance reimbursement for litigation settlement	$ 1,071
Lease expiration date			2022
Rental expenses under operating leases			$ 7,896	$ 8,219	$ 7,747
Purchase commitments covered by aggregate value			$ 132,018
Purchase commitments			Less than one year

Commitments and Contingencies - Minimum Lease Payments under Operating Leases (Detail) $ in Thousands	Dec. 31, 2013 USD ($)
Commitments And Contingencies Disclosure [Abstract]
2014	$ 7,484
2015	5,745
2016	4,171
2017	3,862
2018	2,928
Thereafter	3,855
Total minimum lease payments	$ 28,045

Supplemental Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Operations Data
Net sales	$ 204,394	$ 166,453	$ 156,928	$ 141,645	$ 133,796	$ 141,447	$ 177,397	$ 190,868	$ 669,420	$ 643,508	$ 822,517
Gross profit	87,680	62,234	61,958	54,702	52,601	56,571	76,516	83,791	266,574	269,479	374,988
Income from operations	30,952	12,332	10,427	4,676	6,615	6,392	27,847	33,369	58,387	74,223	184,925
Net income	$ 20,237	$ 2,458	$ 7,320	$ 5,761	$ 4,109	$ 2,580	$ 18,572	$ 22,768	$ 35,776	$ 48,029	$ 129,731
Net income per share:
Basic	$ 0.38	$ 0.05	$ 0.14	$ 0.11	$ 0.08	$ 0.05	$ 0.35	$ 0.43	$ 0.67	$ 0.91	$ 2.49
Diluted	0.38	0.05	0.14	0.11	0.08	0.05	0.35	0.43	0.67	0.90	2.45
Cash dividends paid per common share	$ 0.16	$ 0.16	$ 0.16	$ 0.16	$ 0.16	$ 0.16	$ 0.15	$ 0.15	$ 0.64	$ 0.62	$ 0.60

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=6518256

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.19)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.18)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.22)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6519514

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e565-108580

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 19
-Article 5

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 20
-Article 9

+ Details

Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Valuation Allowance on Deferred Tax Asset [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 27,497	$ 26,475	$ 25,267
Additions Charged to Costs and Expenses		(44)
Additions Charged to Other Accounts		1,066	1,208
Deductions & Write-offs	(395)
Balance at End of Year	27,102	27,497	26,475
Valuation Allowance for Doubtful Accounts and Sales Returns [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	2,879	2,516	2,557
Additions Charged to Costs and Expenses	2,564	3,452	3,390
Additions Charged to Other Accounts	(98)
Deductions & Write-offs	2,594	3,089	3,431
Balance at End of Year	$ 2,751	$ 2,879	$ 2,516