MKS Instruments (MKSI) 10-Q 6 May 16 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2016	Apr. 29, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Trading Symbol	MKSI
Entity Registrant Name	MKS INSTRUMENTS INC
Entity Central Index Key	1,049,502
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		53,373,754

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 357,855	$ 227,574
Short-term investments	308,768	430,663
Trade accounts receivable, net	113,472	101,883
Inventories, net	151,650	152,631
Other current assets	27,388	26,760
Total current assets	959,133	939,511
Property, plant and equipment, net	67,561	68,856
Goodwill	199,999	199,703
Intangible assets, net	42,575	44,027
Other assets	21,392	21,250
Total assets	1,290,660	1,273,347
Current liabilities:
Accounts payable	28,076	23,177
Accrued compensation	20,983	28,424
Income taxes payable	3,510	4,024
Other current liabilities	45,372	35,359
Total current liabilities	97,941	90,984
Other liabilities	$ 21,650	$ 21,482
Commitments and contingencies (Note 17)
Stockholders' equity:
Preferred Stock, $0.01 par value per share, 2,000,000 shares authorized; none issued and outstanding
Common Stock, no par value, 200,000,000 shares authorized; 53,305,017 and 53,199,720 shares issued and outstanding at March 31, 2016 and December 31, 2015, respectively	$ 113	$ 113
Additional paid-in capital	745,840	744,725
Retained earnings	434,803	427,214
Accumulated other comprehensive loss	(9,687)	(11,171)
Total stockholders' equity	1,171,069	1,160,881
Total liabilities and stockholders' equity	$ 1,290,660	$ 1,273,347

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
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
Common Stock, shares authorized	200,000,000	200,000,000
Common Stock, shares issued	53,305,017	53,199,720
Common Stock, shares outstanding	53,305,017	53,199,720

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Net revenues:
Products		$ 153,621	$ 186,096
Services		30,060	27,743
Total net revenues		183,681	213,839
Cost of revenues:
Cost of products		85,352	98,652
Cost of services		20,416	18,141
Total cost of revenues (exclusive of amortization shown separately below)		105,768	116,793
Gross profit		77,913	97,046
Research and development		17,227	16,680
Selling, general and administrative		33,950	30,867
Acquisition costs		2,494	30
Restructuring			788
Amortization of intangible assets		1,683	1,671
Income from operations		22,559	47,010
Interest and other income, net		1,246	504
Income before income taxes		23,805	47,514
Provision for income taxes		6,242	13,728
Net income		17,563	33,786
Other comprehensive income:
Changes in value of financial instruments designated as cash flow hedges, net of tax benefit	[1]	(1,546)	(822)
Foreign currency translation adjustments, net of tax of $0		2,652	(3,206)
Unrealized gain on investments, net of tax expense	[2]	378	334
Total comprehensive income		$ 19,047	$ 30,092
Net income per share:
Basic		$ 0.33	$ 0.63
Diluted		0.33	0.63
Cash dividends per common share		$ 0.170	$ 0.165
Weighted average common shares outstanding:
Basic		53,235	53,214
Diluted		53,563	53,529
[1]	Tax benefit was $1,041 and $133 for the three months ended March 31, 2016 and 2015, respectively.
[2]	Tax expense was $254 and $54 for the three months ended March 31, 2016 and 2015, respectively.

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Tax benefit on changes in value of financial instruments designated as cash flow hedges	$ 1,041	$ 133
Tax on foreign currency translation adjustments	0	0
Tax expense on unrealized gain (loss) on investments	$ 254	$ 54

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows provided by operating activities:
Net income	$ 17,563	$ 33,786
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,278	5,532
Stock-based compensation	4,152	3,212
Provision for excess and obsolete inventory	2,948	2,683
Provision for bad debt	17	(172)
Deferred income taxes	347	736
Excess tax benefits from stock-based compensation	(233)	(524)
Other	68	1
Changes in operating assets and liabilities:
Trade accounts receivable	(10,084)	(19,030)
Inventories	(844)	(12,817)
Income taxes	2,316	2,034
Other current assets	(3,562)	(5,029)
Accrued compensation	(7,086)	(4,930)
Other current and non-current liabilities	7,718	2,735
Accounts payable	4,772	3,587
Other assets	(189)	7,801
Net cash provided by operating activities	23,181	19,605
Cash flows provided by (used in) investing activities:
Acquisition of businesses, net of cash acquired		(9,867)
Purchases of investments	(82,135)	(164,327)
Maturities of investments	76,972	38,205
Sales of investments	128,250	17,414
Purchases of property, plant and equipment	(2,156)	(2,504)
Other		5
Net cash provided by (used in) investing activities	120,931	(121,074)
Cash flows used in financing activities:
Repurchase of common stock	(1,545)
Net payments related to employee stock awards	(2,587)	(2,105)
Dividend payments to common stockholders	(9,056)	(8,784)
Excess tax benefits from stock-based compensation	233	524
Net cash used in financing activities	(12,955)	(10,365)
Effect of exchange rate changes on cash and cash equivalents	(876)	(890)
Increase (decrease) in cash and cash equivalents	130,281	(112,724)
Cash and cash equivalents at beginning of period	227,574	305,437
Cash and cash equivalents at end of period	$ 357,855	$ 192,713

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	1) Basis of Presentation The terms “MKS” and the “Company” refer to MKS Instruments, Inc. and its subsidiaries. The interim financial data as of March 31, 2016 and for the three months ended March 31, 2016 and 2015 are unaudited; however, in the opinion of MKS, the interim data includes all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of the results for the interim periods. The condensed consolidated balance sheet presented as of December 31, 2015 has been derived from the consolidated audited financial statements as of that date. The unaudited condensed consolidated financial statements presented herein have been prepared in accordance with the instructions to Form 10-Q and do not include all of the information and note disclosures required by United States generally accepted accounting principles (“U.S. GAAP”). The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the MKS Annual Report on Form 10-K for the year ended December 31, 2015 filed with the Securities and Exchange Commission on February 26, 2016. The preparation of these unaudited condensed consolidated 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 unaudited condensed consolidated 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, stock-based compensation, inventory, intangible assets, goodwill and other long-lived assets, acquisition expenses, income taxes and investments. 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.

Recently Issued Accounting Pron

Recently Issued Accounting Pronouncements	3 Months Ended
	Mar. 31, 2016
Accounting Changes and Error Corrections [Abstract]
Recently Issued Accounting Pronouncements	2) Recently Issued Accounting Pronouncements In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-09, “Compensation - Stock Compensation (Topic 718)—Improvements to Employee Share-Based Payment Accounting.” This standard simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The provisions of this ASU are effective for annual periods beginning after December 15, 2016, including interim periods within those fiscal years and early adoption is permitted. The Company is currently evaluating the requirements of this ASU and has not yet determined its impact on the Company’s consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” This standard requires the recognition of lease assets and liabilities for all leases, with certain exceptions, on the balance sheet. In transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. This ASU is effective for annual periods beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the requirements of this ASU and has not yet determined its impact on the Company’s consolidated financial statements. In September 2015, the FASB issued ASU 2015-16, “Business Combinations (Topic 805)”—Simplifying the Accounting for Measurement-Period Adjustments.” This standard requires that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustments are identified, including the cumulative effect of the change in the provisional amount as if the accounting had been completed at the acquisition date. This ASU is effective for annual periods beginning after December 15, 2015, including interim periods within those fiscal years. The Company adopted this ASU in the first quarter of 2016. Adoption of this ASU could have a material impact on the Company’s consolidated financial position and results of operations when accounting for future acquisitions. In July 2015, the FASB issued ASU 2015-11, “Inventory (Topic 330)—Simplifying the Measurement of Inventory.” The amendments in this ASU apply to all inventory that is measured using first-in, first-out or average cost. This standard requires that an entity measure inventory within the scope of this update at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The amendments in this ASU are effective for annual periods beginning after December 15, 2016, including interim periods within those fiscal years. Adoption of this ASU is not expected to have a material impact on the Company’s consolidated statements of financial position and results of operations. In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements—Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern.” Under this guidance, management will be required to assess an entity’s ability to continue as a going concern, and to provide related footnote disclosures in certain circumstances. The provisions of this ASU are effective for annual periods beginning after December 15, 2016, and for annual and interim periods thereafter. This ASU is not expected to have an impact on the Company’s consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606),” which supersedes all existing revenue recognition requirements, including most industry-specific guidance. This standard requires a company to recognize revenue when it transfers goods and services to customers in an amount that reflects the consideration that the company expects to be entitled to in exchange for those goods or services. The ASU also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and assets recognized from costs incurred to obtain or fulfill a contract. This pronouncement is effective for annual periods beginning after December 15, 2017, including interim periods within that reporting period. The two permitted transition methods under the new standard are the full retrospective method, in which case the standard would be applied to each prior reporting period presented, or the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application. The Company has not yet selected a transition method. The Company is currently evaluating the requirements of this ASU and has not yet determined its impact on the Company’s consolidated financial statements.

Investments

Investments	3 Months Ended
	Mar. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Investments	3) Investments The fair value of investments classified as short-term consists of the following: March 31, 2016 December 31, 2015 Available-for-sale investments: Time deposits and certificates of deposit $ 23,005 $ 11,892 Bankers’ acceptance drafts 1,646 728 Asset-backed securities 74,057 124,997 Corporate obligations 90,856 165,109 Municipal bonds 4,611 8,355 U.S. treasury obligations 4,360 — U.S. agency obligations 110,233 119,582 $ 308,768 $ 430,663 The following tables show the gross unrealized gains and (losses) aggregated by investment category for short-term available-for-sale investments: As of March 31, 2016: Cost Gross Gross Estimated Short-term investments: Available-for-sale investments: Time deposits and certificates of deposit $ 23,005 $ — $ — $ 23,005 Bankers’ acceptance drafts 1,646 — — 1,646 Asset-backed securities 74,068 27 (38 ) 74,057 Corporate obligations 90,944 52 (140 ) 90,856 Municipal bonds 4,604 9 (2 ) 4,611 U.S. treasury obligations 4,355 5 — 4,360 U.S. agency obligations 110,216 24 (7 ) 110,233 $ 308,838 $ 117 $ (187 ) $ 308,768 As of December 31, 2015: Cost Gross Gross Estimated Short-term investments: Available-for-sale investments: Time deposits and certificates of deposit $ 11,893 $ — $ (1 ) $ 11,892 Bankers acceptance drafts 728 — — 728 Asset-backed securities 125,271 — (274 ) 124,997 Corporate obligations 165,445 5 (341 ) 165,109 Municipal bonds 8,346 13 (4 ) 8,355 U.S. agency obligations 119,699 3 (120 ) 119,582 $ 431,382 $ 21 $ (740 ) $ 430,663 The tables above, which show the gross unrealized gains and (losses) aggregated by investment category for available-for-sale investments as of March 31, 2016 and December 31, 2015, reflect the inclusion within short-term investments of investments with contractual maturities greater than one year from the date of purchase. Management has the ability, if necessary, to liquidate any of its investments in order to meet the Company’s liquidity needs in the next 12 months. Accordingly, those investments with contractual maturities greater than one year from the date of purchase are classified as short-term on the accompanying balance sheets. 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. Realized gains or losses are reflected in income and were not material for the three months ended March 31, 2016 and 2015.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	4) 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 assessed 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, the Company categorizes such assets and liabilities based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s 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 or liability. Assets and liabilities of the Company are measured at fair value on a recurring basis as of March 31, 2016 and are summarized as follows: Fair Value Measurements at Reporting Date Using Description March 31, 2016 Quoted Prices in Significant Significant Assets: Cash equivalents: Money market funds $ 197,650 $ 197,650 $ — $ — Bankers’ acceptance drafts 15 — 15 — Commercial paper 9,999 — 9,999 — U.S. agency obligations 35,496 — 35,496 — Available-for-sale investments: Time deposits and certificates of deposit 23,005 — 23,005 — Bankers’ acceptance drafts 1,646 — 1,646 — Asset-backed securities 74,057 — 74,057 — Corporate obligations 90,856 — 90,856 — Municipal bonds 4,611 — 4,611 — U.S. treasury obligations 4,360 — 4,360 — U.S. agency obligations 110,233 — 110,233 — Derivatives – currency forward contracts 487 — 487 — Total assets $ 552,415 $ 197,650 $ 354,765 $ — Liabilities: Derivatives – currency forward contracts $ 2,193 $ — $ 2,193 $ — Reported as follows: Assets: Cash and cash equivalents (1) $ 243,160 $ 197,650 $ 45,510 $ — Short-term investments 308,768 — 308,768 — Other current assets 487 — 487 — Total current assets $ 552,415 $ 197,650 $ 354,765 $ — Liabilities: Other current liabilities $ (2,193 ) $ — $ (2,193 ) $ — (1) The cash and cash equivalent amounts presented in the table above do not include cash of $102,950 and non-negotiable time deposits of $11,745 as of March 31, 2016. Assets and liabilities of the Company are measured at fair value on a recurring basis as of December 31, 2015 and are summarized as follows: Fair Value Measurements at Reporting Date Using Description December 31, 2015 Quoted Prices in Significant Other Significant Assets: Cash equivalents: Money market funds $ 106,099 $ 106,099 $ — $ — Bankers acceptance drafts 11 — 11 — Corporate obligations 330 — 330 — Available-for-sale investments: Time deposits and certificates of deposit 11,892 — 11,892 — Bankers’ acceptance drafts 728 — 728 — Asset-backed securities 124,997 — 124,997 — Corporate obligations 165,109 — 165,109 — Municipal bonds 8,355 — 8,355 — U.S. agency obligations 119,582 — 119,582 — Derivatives – currency forward contracts 1,486 — 1,486 — Total assets $ 538,589 $ 106,099 $ 432,490 $ — Liabilities: Derivatives – currency forward contracts Total liabilities $ 263 $ — $ 263 $ — Reported as follows: Assets: Cash and cash equivalents (1) $ 106,440 $ 106,099 $ 341 $ — Short-term investments 430,663 — 430,663 — Other current assets 1,486 — 1,486 — Total current assets $ 538,589 $ 106,099 $ 432,490 $ — Liabilities: Other current liabilities $ 263 $ — $ 263 $ — (1) The cash and cash equivalents amounts presented in the table above do not include cash of $110,118 and non-negotiable time deposits of $11,016 as of December 31, 2015. Money Market Funds Money market funds are cash and cash equivalents and are classified within Level 1 of the fair value hierarchy. Available-For-Sale Investments As of March 31, 2016, available-for-sale investments consisted of time deposits and drafts denominated in the Euro currency, certificates of deposit, bankers’ acceptance drafts, asset-backed securities (which include auto loans, credit card receivables and equipment trust receivables), corporate obligations, municipal bonds, 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.

Derivatives

Derivatives	3 Months Ended
	Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	5) 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, for which 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, Euro and Taiwanese 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 other comprehensive income (loss) (“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 March 31, 2016 and December 31, 2015, the Company had outstanding forward foreign exchange contracts with gross notional values of $65,796 and $89,989, respectively. The following tables provide a summary of the primary net hedging positions and corresponding fair values held as of March 31, 2016 and December 31, 2015: March 31, 2016 Currency Hedged (Buy/Sell) Gross Notional Fair Value (1) U.S. Dollar/Japanese Yen $ 19,664 $ (1,333 ) U.S. Dollar/South Korean Won 26,906 (208 ) U.S. Dollar/Euro 7,600 (286 ) U.S. Dollar/U.K. Pound Sterling 2,950 128 U.S. Dollar/Taiwan Dollar 8,676 (7 ) Total $ 65,796 $ (1,706 ) (1) Represents the fair value of the net (liability) asset amount included in the consolidated balance sheet. December 31, 2015 Currency Hedged (Buy/Sell) Gross Notional Fair Value (1) U.S. Dollar/Japanese Yen $ 26,848 $ (136 ) U.S. Dollar/South Korean Won 34,777 915 U.S. Dollar/Euro 10,987 19 U.S. Dollar/U.K. Pound Sterling 4,587 61 U.S. Dollar/Taiwan Dollar 12,790 364 Total $ 89,989 $ 1,223 (1) Represents the fair value of the net (liability) asset amount included in the consolidated balance sheet. The following table provides a summary of the fair value amounts of the Company’s derivative instruments: Derivatives Designated as Hedging Instruments March 31, 2016 December 31, 2015 Derivative assets: Forward exchange contracts $ 487 $ 1,486 Derivative liabilities: Forward exchange contracts (2,193 ) (263 ) Total net derivative (liabilities) assets designated as hedging instruments (1) $ (1,706 ) $ 1,223 (1) The derivative asset of $487 and derivative liability of $2,193 are classified in other current assets and other current liabilities in the consolidated balance sheet as of March 31, 2016. The derivative asset of $1,486 and derivative liability of $263 are classified in other current assets and other current liabilities in the consolidated balance sheet as of December 31, 2015. These foreign exchange contracts are subject to a master netting agreement with one financial institution. However, the Company has elected to record these contracts on a gross basis in the balance sheet. The net amount of existing gains as of March 31, 2016 that the Company expects to reclassify from OCI into earnings within the next twelve months is immaterial. The following table provides a summary of the (losses) gains on derivatives designated as hedging instruments: Three Months Ended March 31, Derivatives Designated as Cash Flow Hedging Instruments 2016 2015 Forward exchange contracts: Net loss recognized in OCI (1) $ (3,418 ) $ (2,090 ) Net gain reclassified from accumulated OCI into income (2) $ 696 $ 1,193 (1) Net change in the fair value of the effective portion classified in OCI. (2) Effective portion classified in cost of products for the three months ended March 31, 2016 and 2015. The tax effect of the gains or losses reclassified from accumulated OCI into income is immaterial. The following table provides a summary of the (losses) gains on derivatives not designated as hedging instruments: Three Months Ended March 31, Derivatives Not Designated as Hedging Instruments 2016 2015 Forward exchange contracts: Net (loss) gain recognized in income (1) $ (565 ) $ 98 (1) The Company enters into foreign exchange contracts to hedge against changes in the balance sheet for certain subsidiaries. These derivatives are not designated as hedging instruments and gains or losses from these derivatives are recorded immediately in selling, general and administrative expenses.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2016
Inventory Disclosure [Abstract]
Inventories	6) Inventories Inventories consist of the following: March 31, 2016 December 31, 2015 Raw materials $ 78,707 $ 78,352 Work-in-process 24,665 23,297 Finished goods 48,278 50,982 $ 151,650 $ 152,631

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2016
Business Combinations [Abstract]
Acquisitions	7) Acquisitions Newport Corporation See Note 18 for information on the acquisition of Newport Corporation. Precisive, LLC On March 17, 2015, the Company acquired Precisive, LLC (“Precisive”) for $12,085, net of cash acquired of $435. The purchase price included a deferred payment amount of $2,600 to cover any potential indemnification claims, which amount will be paid to the sellers after 15 months assuming there are no indemnification claims. Precisive is an innovative developer of optical analyzers based on Tunable Filter Spectroscopy, which provide real-time gas analysis in the natural gas and hydrocarbon processing industries, including refineries, hydrocarbon processing plants, gas-to-power machines, biogas processes and fuel gas transportation and metering, while delivering customers a lower total cost of ownership. The following table summarizes the estimated fair value of the assets acquired and liabilities assumed at the date of acquisition: Current assets $ 693 Non-current assets 18 Intangible assets 5,110 Goodwill 7,042 Total assets acquired 12,863 Total current liabilities assumed (343 ) Fair value of assets acquired and liabilities assumed 12,520 Less cash acquired (435 ) Total purchase price, net of cash acquired $ 12,085 Substantially all of the purchase price is 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, which approximates the pattern of use. Order backlog $ 50 18 months Customer relationships 1,430 8 years Exclusive patent license 2,600 10 years Trade names 210 10 years Developed technology 820 10 years $ 5,110 The fair value of the acquired intangibles was determined using the income approach. This acquisition resulted in a purchase price that exceeded the estimated fair value of tangible and intangible assets, the excess amount of which was allocated to goodwill. The Company believes 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; (2) potential to leverage the Company’s sales force and intellectual property to attract new customers and revenue; and (3) potential to strengthen and expand into new but complementary markets, including targeting new applications such as natural gas processing, hydrocarbon processing and other oil and gas segments. The results of this acquisition were included in the Company’s consolidated operations beginning on March 17, 2015. Precisive is included in the Company’s Instruments, Control and Vacuum Products group and the Advanced Manufacturing Capital Equipment reportable segment.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	8) Goodwill and Intangible Assets Goodwill The Company’s methodology for allocating the purchase price relating to purchase acquisitions is determined through established and generally accepted valuation techniques. Goodwill is measured as the excess of the cost of the acquisition over the sum of the amounts assigned to tangible and identifiable intangible assets acquired less liabilities assumed. The Company assigns assets acquired (including goodwill) and liabilities assumed to one or more reporting units as of the date of acquisition. Typically acquisitions relate to a single reporting unit and thus do not require the allocation of goodwill to multiple reporting units. If the products obtained in an acquisition are assigned to multiple reporting units, the goodwill is distributed to the respective reporting units as part of the purchase price allocation process. Goodwill and purchased intangible assets with indefinite useful lives are not amortized, but are reviewed for impairment annually during the fourth quarter of each fiscal year and whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. The process of evaluating the potential impairment of goodwill and intangible assets requires significant judgment. The Company regularly monitors current business conditions and other factors including, but not limited to, adverse industry or economic trends, restructuring actions and lower projections of profitability that may impact future operating results. The changes in the carrying amount of goodwill and accumulated impairment (loss) during the three months ended March 31, 2016 and year ended December 31, 2015 were as follows: 2016 2015 Gross Accumulated Net Gross Accumulated Net Beginning balance at January 1 $ 339,117 $ (139,414 ) $ 199,703 $ 331,795 $ (139,414 ) $ 192,381 Acquired goodwill (1) — — 8,017 — 8,017 Foreign currency translation 296 — 296 (695 ) — (695 ) Ending balance at March 31, 2016 and December 31, 2015 $ 339,413 $ (139,414 ) $ 199,999 $ 339,117 $ (139,414 ) $ 199,703 (1) During 2015, the Company recorded $7,042 of goodwill related to the acquisition of Precisive. During the second quarter of 2015, the Company recorded a purchase accounting adjustment of $975 primarily related to an inventory valuation adjustment related to the acquisition of Granville-Phillips. Intangible Assets Components of the Company’s intangible assets are comprised of the following: As of March 31, 2016: Gross Accumulated Foreign Net Completed technology $ 101,200 $ (82,939 ) $ (142 ) $ 18,119 Customer relationships 37,251 (17,251 ) 105 20,105 Patents, trademarks, trade names and other (1) 30,396 (26,056 ) 11 4,351 $ 168,847 $ (126,246 ) $ (26 ) $ 42,575 As of December 31, 2015 Gross Accumulated Foreign Net Completed technology (1) $ 101,200 $ (82,330 ) $ (272 ) $ 18,598 Customer relationships (1) 37,251 (16,345 ) 10 20,916 Patents, trademarks, trade names and other (1) 30,396 (25,888 ) 5 4,513 $ 168,847 $ (124,563 ) $ (257 ) $ 44,027 (1) During 2015, the Company recorded $5,110 of separately identified intangible assets related to the acquisition of Precisive, of which $820 was completed technology, $1,430 was customer relationships and $2,860 was patents, trademarks, trade names and other. Aggregate amortization expense related to acquired intangibles for the three months ended March 31, 2016 and 2015 was $1,683 and $1,671, respectively. Estimated amortization expense for each of the remaining fiscal years is as follows: Year Amount 2016 (remaining) $ 4,990 2017 6,601 2018 6,586 2019 6,543 2020 6,489 2021 4,709 Thereafter 6,657

Other Assets

Other Assets	3 Months Ended
	Mar. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	9) Other Assets March 31, 2016 December 31, 2015 Other Current Assets: Income tax receivable $ 6,233 $ 8,682 Prepaid income tax 6,562 4,755 VAT tax receivable 186 3,264 Prepaid service and support 3,290 2,970 Other 11,117 7,089 Total other current assets $ 27,388 $ 26,760 Other Assets: Deferred tax assets, net $ 19,139 $ 19,252 Other 2,253 1,998 Total other assets $ 21,392 $ 21,250

Other Liabilities

Other Liabilities	3 Months Ended
	Mar. 31, 2016
Other Liabilities Disclosure [Abstract]
Other Liabilities	10) Other Liabilities March 31, 2016 December 31, 2015 Other Current Liabilities: VAT payable $ 5,221 $ 3,075 Customer prepayments 2,621 1,741 Product warranties 5,039 5,205 Deferred revenue 7,832 7,189 Other 24,659 18,149 Total other current liabilities $ 45,372 $ 35,359 Other Liabilities: Long-term income tax payable $ 3,832 $ 4,483 Accrued compensation 13,939 13,395 Other 3,879 3,604 Total other liabilities $ 21,650 $ 21,482

Debt

Debt	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Debt	11) Debt The Company’s Japanese subsidiary has lines of credit and short-term borrowing arrangements with two financial institutions, which arrangements generally expire and are renewed at three-month intervals. The lines of credit provided for aggregate borrowings as of March 31, 2016 of up to an equivalent of $20,455 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 March 31, 2016 and December 31, 2015.

Product Warranties

Product Warranties	3 Months Ended
	Mar. 31, 2016
Guarantees [Abstract]
Product Warranties	12) Product Warranties The Company records 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: Three Months Ended March 31, 2016 2015 Beginning of period $ 5,205 $ 6,266 Provision for product warranties 783 1,109 Direct charges to warranty liability (984 ) (1,244 ) Foreign currency translation 35 (67 ) End of period $ 5,039 $ 6,064

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	13) Income Taxes The Company’s effective tax rate for the three months ended March 31, 2016 and 2015 was 26.2% and 28.9%, respectively. The effective tax rate for the three months ended March 31, 2016 was lower than the U.S. statutory tax rate primarily due to the geographic mix of income and profits earned by the Company’s international subsidiaries being taxed at rates lower than the U.S. statutory tax rate, the deduction for domestic production activities, and the federal research credit offset by state income taxes. The effective tax rate for the three months ended March 31, 2015 was lower than the U.S. statutory tax rate primarily due to the impact of lower tax rates on foreign income and the deduction for domestic production activities. As of March 31, 2016, the total amount of gross unrecognized tax benefits, which excludes interest and penalties, was approximately $3,712. At December 31, 2015, the total amount of gross unrecognized tax benefits, which excludes interest and penalties, was approximately $4,332. The net decrease from December 31, 2015 was primarily attributable to a release of reserves for uncertain tax positions due to the expiration of the statute of limitations related to a previously open tax year. As of March 31, 2016, if these benefits were recognized in a future period, the timing of which is not estimable, the net unrecognized tax benefit of $3,707, excluding interest and penalties, would impact the Company’s effective tax rate. The Company accrues interest expense, and if applicable, penalties, for any uncertain tax positions. Interest and penalties are classified as a component of income tax expense. As of March 31, 2016 and December 31, 2015, the Company had accrued interest on unrecognized tax benefits of approximately $125 and $157, respectively. Over the next 12 months it is reasonably possible that the Company may recognize approximately $1,469 of previously net unrecognized tax benefits related to various U.S. federal, state and foreign tax positions primarily as a result of the expiration of certain statutes of limitations. The Company and its subsidiaries are subject to examination by U.S. federal, state and foreign tax authorities. The United States Internal Revenue Service commenced an examination of the Company’s U.S. federal tax filings for tax years 2011 through 2013 during the quarter ended March 31, 2015. The audit was effectively settled during the three months ended December 31, 2015 upon the Company’s acceptance of the income tax examination changes. As part of the audit the Company consented to extend the U.S. statute of limitations for tax year 2011 until September 30, 2016. The U.S. statute of limitations remains open for tax years 2011 through present. The statute of limitations for the Company’s tax filings in other jurisdictions varies between fiscal years 2008 through present.

Net Income Per Share

Net Income Per Share	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Net Income Per Share	14) Net Income Per Share The following table sets forth the computation of basic and diluted net income per share: Three Months Ended March 31, 2016 2015 Numerator: Net income $ 17,563 $ 33,786 Denominator: Shares used in net income per common share – basic 53,235,000 53,214,000 Effect of dilutive securities: Stock options, restricted stock and employee stock purchase plan 328,000 315,000 Shares used in net income per common share – diluted 53,563,000 53,529,000 Net income per common share: Basic $ 0.33 $ 0.63 Diluted $ 0.33 $ 0.63 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. As of March 31, 2016, restricted stock units related to an aggregate of approximately 737,000 shares were outstanding. For the three months ended March 31, 2016 and 2015, there were no weighted-average restricted stock units that would have an anti-dilutive effect on EPS, and would thus need to be excluded from the computation of diluted weighted-average shares.

Stockholder's Equity

Stockholder's Equity	3 Months Ended
	Mar. 31, 2016
Equity [Abstract]
Stockholder's Equity	15) Stockholder’s Equity Stock Repurchase Program 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 depends upon a variety of factors, including business conditions, stock market conditions, debt agreement limitations 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 the three months ended March 31, 2016, the Company repurchased approximately 45,000 shares of its common stock for $1,545, or an average price of $34.50 per share. During the three months ended March 31, 2015, the Company did not repurchase any shares of common stock. Cash 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 the three months ended March 31, 2016, the Company’s Board of Directors declared a cash dividend of $0.17 per share, which dividends totaled $9,056. During the three months ended March 31, 2015, the Board of Directors authorized a cash dividend of $0.165 per share, which dividends totaled $8,784. On May 2, 2016, the Company’s Board of Directors declared a quarterly cash dividend of $0.17 per share to be paid on June 10, 2016 to shareholders of record as of May 30, 2016. 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.

Business Segment, Geographic Ar

Business Segment, Geographic Area, Product and Significant Customer Information	3 Months Ended
	Mar. 31, 2016
Segment Reporting [Abstract]
Business Segment, Geographic Area, Product and Significant Customer Information	16) 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, which is used in the decision making process to assess performance. Based upon the information provided to the CODM, the Company has determined it has four reportable segments. The Company’s reportable segments are Advanced Manufacturing Capital Equipment, Global Service, Asia Region Sales and Other. The Company has reported corporate expenses and certain intercompany pricing transactions in a Corporate and Eliminations reconciling column. The Advanced Manufacturing Capital Equipment segment includes the development, manufacturing and sales of instruments and control products, power and reactive gas products, materials delivery 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 product sales, which are recorded at transfer prices in accordance with applicable tax requirements. The Global Service segment includes the worldwide servicing of instruments and control products, power and reactive gas products, materials delivery products and vacuum products, all of which are utilized in semiconductor processing and other similar advanced manufacturing processes. It also includes sales of custom fabrication services. The Asia Region Sales segment mainly resells products from the Advanced Manufacturing Capital Equipment and Other segments into Asia regions. The Other segment includes operating segments that are not required to be reported separately as a reportable segment and includes sales for products that are re-sold from the Advanced Manufacturing Capital Equipment into Europe regions as well as sales from other operating segments. The Company derives its segment results directly from the manner in which results are reported in its management reporting system. The accounting policies that the Company 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 Other 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 and Eliminations. The CODM reviews several metrics of each operating segment, including net revenues and gross profit (loss). The Company does not maintain balance sheets for the majority of its operating segments and, as such, amounts have not been allocated to the reportable segments. The Company does not disclose external or intersegment revenues separately by reportable segment as this information is not presented to the CODM for decision making purposes. The following is net revenues by reportable segment: Three Months Ended March 31, 2016 2015 Advanced Manufacturing Capital Equipment $ 153,570 $ 179,233 Global Service 30,060 27,743 Asia Region Sales (1) 43,848 55,377 Other 16,327 21,216 Corporate and Eliminations (60,124 ) (69,730 ) $ 183,681 $ 213,839 The following is a reconciliation of segment gross profit to consolidated net income: Three Months Ended March 31, 2016 2015 Gross profit by reportable segment: Advanced Manufacturing Capital Equipment $ 67,630 $ 78,688 Global Service 9,644 9,603 Asia Region Sales (1) 2,413 6,920 Other 4,370 6,843 Corporate and Eliminations (6,144 ) (5,008 ) Total gross profit by reportable segment 77,913 97,046 Operating expenses: Research and development 17,227 16,680 Selling, general and administrative 33,950 30,867 Acquisition costs 2,494 30 Restructuring — 788 Amortization of intangible assets 1,683 1,671 Income from operations 22,559 47,010 Interest and other income, net 1,246 504 Income before income taxes 23,805 47,514 Provision for income taxes 6,242 13,728 Net income $ 17,563 $ 33,786 (1) The Asia Region Sales segment does not represent total geographical Asia financial information. This sales operation only represents the sales from the resale of Advanced Manufacturing Capital Equipment and Other segment products in their respective regions. The Advanced Manufacturing Capital Equipment and Other segments both have sales in this region as well. Accordingly, total geographical sales include sales from multiple reportable segments. The following is capital expenditures by reportable segment for the three months ended March 31, 2016 and 2015: Advanced Global Service Asia Region Other Corporate and Total Three Months Ended March 31, 2016: Capital expenditures $ 1,389 $ 39 $ 81 $ 28 $ 619 $ 2,156 Three Months Ended March 31, 2015: Capital expenditures $ 1,522 $ 122 $ 42 $ 74 $ 744 $ 2,504 The following is depreciation and amortization by reportable segment for the three months ended March 31, 2016 and 2015: Advanced Global Service Asia Region Other Corporate and Total Three Months Ended March 31, 2016: Depreciation and amortization $ 4,111 $ 255 $ 89 $ 244 $ 579 $ 5,278 Three Months Ended March 31, 2015: Depreciation and amortization $ 4,247 $ 256 $ 85 $ 310 $ 634 $ 5,532 Goodwill associated with each of our reportable segments is as follows: March 31, 2016 December 31, 2015 Reportable segment: Advanced Manufacturing Capital Equipment $ 174,344 $ 174,344 Global Service 19,826 19,826 Asia Region Sales — — Other 6,228 6,228 Foreign currency translation (399 ) (695 ) Total goodwill $ 199,999 $ 199,703 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 three groups of similar products based upon the similarity of product function. Worldwide net revenue for each group of products is as follows: Three Months Ended March 31, 2016 2015 Instruments, Control and Vacuum Products $ 94,478 $ 110,436 Power and Reactive Gas Products 77,116 88,499 Analytical Solutions Products 12,087 14,904 $ 183,681 $ 213,839 Sales of Instruments, Control and Vacuum Products and Power and Reactive Gas Products are included in the Company’s Advanced Manufacturing Capital Equipment, Asia Region Sales, Global Service and Other segments because the products are sold through those segments. Sales of the Analytical Solutions Products are included in the Asia Region Sales, Global Service and Other segments because the products are sold through those segments. Geographic 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. Three Months Ended March 31, 2016 2015 Net revenues: United States $ 94,218 $ 120,181 Korea 20,550 32,072 Japan 16,236 17,256 Asia (excluding Korea and Japan) 33,456 23,683 Europe 19,221 20,647 $ 183,681 $ 213,839 March 31, 2016 December 31, 2015 Long-lived assets: (1) United States $ 55,620 $ 56,594 Europe 5,584 5,783 Asia 8,612 8,952 $ 69,816 $ 71,329 (1) Long-lived assets include property, plant and equipment, net and certain other long-term assets, excluding long-term tax related accounts. Major Customers The Company had two customers with net revenues greater than 10% of total net revenues in the periods shown as follows: Three Months Ended March 31, 2016 2015 Applied Materials, Inc. 18.8 % 17.4 % LAM Research Corporation 17.1 % 12.1 %

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	17) Commitments and Contingencies On March 9, 2016, a putative class action lawsuit captioned Dixon Chung v. Newport Corp., et al, Case No. A-16-733154-C, was filed in the District Court, Clark County, Nevada on behalf of a putative class of stockholders of Newport Corporation (“Newport”) for claims related to the February 22, 2016 Agreement and Plan of Merger (the “Merger Agreement”) between the Company, Newport and PSI Equipment, Inc., a Nevada corporation and a wholly owned subsidiary of the Company, which was merged with Newport on April 29, 2016 and is the surviving corporation of such merger (“Merger Sub”). The complaint names as defendants the Company, Newport, Merger Sub, and certain current and former members of Newport’s former board of directors. The complaint alleges that the named directors breached their fiduciary duties to Newport’s stockholders by agreeing to sell Newport through an inadequate and unfair process, which led to inadequate and unfair consideration, and by agreeing to unfair deal protection devices. The complaint also alleges that the Company, Newport, and Merger Sub aided and abetted the named directors’ alleged breaches of their fiduciary duties. The complaint seeks injunctive relief, including to enjoin or rescind the Merger Agreement, monetary damages, and an award of attorneys’ and other fees and costs, among other relief. On March 25, 2016, the plaintiff in the Chung action filed an amended complaint, which adds certain allegations, including that the definitive proxy statement filed by Newport on March 29, 2016 (the “Proxy”) omitted material information. The amended complaint also names as defendants the Company, Newport, Merger Sub, and then-current members of Newport’s board of directors. Also on March 25, 2016, a second putative class action complaint captioned Hubert C. Pincon v. Newport Corp., et al., Case No. A-16-734039-B, was filed in the District Court, Clark County, Nevada, on behalf of a putative class of Newport’s stockholders for claims related to the Merger Agreement. The complaint names as defendants the Company, Newport, and Merger Sub and the members of Newport’s former board of directors. It alleges that the named directors breached their fiduciary duties to Newport’s stockholders by agreeing to sell Newport through an inadequate and unfair process, which led to inadequate and unfair consideration, by agreeing to unfair deal protection devices, and by omitting material information from the Proxy. The complaint also alleges that the Company, Newport, and Merger Sub aided and abetted the named directors’ alleged breaches of their fiduciary duties. The complaint seeks injunctive relief, including to enjoin or rescind the Merger Agreement, and an award of attorneys’ and other fees and costs, among other relief. On April 14, 2016, the Court granted plaintiffs’ motion to consolidate the Pincon and Chung actions and appointed counsel in the Pincon action as lead counsel. Also on April 14, the Court granted plaintiffs’ motion for expedited discovery and scheduled a hearing on plaintiffs’ anticipated motion for a preliminary injunction for April 25, 2016. On April 20, 2016, plaintiffs filed a motion to vacate the hearing on their anticipated motion for a preliminary injunction and notified the Court that they did not presently intend to file a motion for a preliminary injunction regarding the Merger Agreement. On April 22, 2016, the Court vacated the hearing on plaintiffs’ anticipated motion for a preliminary injunction. The Company believes that the claims asserted in the complaints have no merit and the Company, Newport, Merger Sub and the named directors intend to defend vigorously against these claims. We are also 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.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	18) Subsequent Events Acquisition of Newport Corporation On April 29, 2016, the Company completed its acquisition of Newport pursuant to the Merger Agreement (the “Newport Merger”). At the effective time of the Merger and pursuant to the terms and conditions of the Merger Agreement, each share of Newport’s common stock issued and outstanding as of immediately prior to the effective time of the Newport Merger was converted into the right to receive $23.00 in cash, without interest and subject to deduction for any required withholding tax. The aggregate consideration paid by the Company to the former Newport stockholders was approximately $905,000, excluding related transaction fees and expenses and repayment of approximately $93,000 of Newport’s U.S. indebtedness outstanding as of immediately prior to the effective time of the Newport Merger. The Company funded the payment of the aggregate consideration with a combination of the Company’s available cash on hand and the proceeds from the Company’s senior secured term loan facility described below. The Company was not able to include certain required disclosures in its quarterly report on Form 10-Q for the three months ended March 31, 2016 because the information necessary to complete the preliminary purchase price allocation related to the acquisition was not yet available. In connection with the completion of the Newport Merger, the Company entered into a term loan credit agreement with Barclays Bank PLC as administrative agent and collateral agent, that provided senior secured financing of $780,000, subject to increase in accordance with the terms of the term loan credit agreement. In connection with the completion of the Newport Merger, the Company also entered into an asset-based credit agreement with Deutsche Bank AG New York Branch as administrative agent and collateral agent, that provides senior secured financing of up to $50,000, subject to a borrowing base limitation, none of which has been drawn down by the Company to date. Newport is a global supplier of advanced-technology products and systems to customers in the scientific research and defense/security, microelectronics, life and health sciences and industrial manufacturing markets. Investment in Reno Sub-Systems, Inc. On April 27, 2016, the Company invested $9,300 for a minority interest in Reno Sub-Systems, Inc., a Delaware corporation, which operates in the field of semiconductor process equipment instrumentation.

Recently Issued Accounting Pr25

Recently Issued Accounting Pronouncements (Policies)	3 Months Ended
	Mar. 31, 2016
Accounting Changes and Error Corrections [Abstract]
Recently Issued Accounting Pronouncements	In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-09, “Compensation - Stock Compensation (Topic 718)—Improvements to Employee Share-Based Payment Accounting.” This standard simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The provisions of this ASU are effective for annual periods beginning after December 15, 2016, including interim periods within those fiscal years and early adoption is permitted. The Company is currently evaluating the requirements of this ASU and has not yet determined its impact on the Company’s consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” This standard requires the recognition of lease assets and liabilities for all leases, with certain exceptions, on the balance sheet. In transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. This ASU is effective for annual periods beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the requirements of this ASU and has not yet determined its impact on the Company’s consolidated financial statements. In September 2015, the FASB issued ASU 2015-16, “Business Combinations (Topic 805)”—Simplifying the Accounting for Measurement-Period Adjustments.” This standard requires that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustments are identified, including the cumulative effect of the change in the provisional amount as if the accounting had been completed at the acquisition date. This ASU is effective for annual periods beginning after December 15, 2015, including interim periods within those fiscal years. The Company adopted this ASU in the first quarter of 2016. Adoption of this ASU could have a material impact on the Company’s consolidated financial position and results of operations when accounting for future acquisitions. In July 2015, the FASB issued ASU 2015-11, “Inventory (Topic 330)—Simplifying the Measurement of Inventory.” The amendments in this ASU apply to all inventory that is measured using first-in, first-out or average cost. This standard requires that an entity measure inventory within the scope of this update at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The amendments in this ASU are effective for annual periods beginning after December 15, 2016, including interim periods within those fiscal years. Adoption of this ASU is not expected to have a material impact on the Company’s consolidated statements of financial position and results of operations. In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements—Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern.” Under this guidance, management will be required to assess an entity’s ability to continue as a going concern, and to provide related footnote disclosures in certain circumstances. The provisions of this ASU are effective for annual periods beginning after December 15, 2016, and for annual and interim periods thereafter. This ASU is not expected to have an impact on the Company’s consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606),” which supersedes all existing revenue recognition requirements, including most industry-specific guidance. This standard requires a company to recognize revenue when it transfers goods and services to customers in an amount that reflects the consideration that the company expects to be entitled to in exchange for those goods or services. The ASU also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and assets recognized from costs incurred to obtain or fulfill a contract. This pronouncement is effective for annual periods beginning after December 15, 2017, including interim periods within that reporting period. The two permitted transition methods under the new standard are the full retrospective method, in which case the standard would be applied to each prior reporting period presented, or the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application. The Company has not yet selected a transition method. The Company is currently evaluating the requirements of this ASU and has not yet determined its impact on the Company’s consolidated financial statements.

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Fair Value of Investments Classified as Short-Term Available-for-Sale Investments	The fair value of investments classified as short-term consists of the following: March 31, 2016 December 31, 2015 Available-for-sale investments: Time deposits and certificates of deposit $ 23,005 $ 11,892 Bankers’ acceptance drafts 1,646 728 Asset-backed securities 74,057 124,997 Corporate obligations 90,856 165,109 Municipal bonds 4,611 8,355 U.S. treasury obligations 4,360 — U.S. agency obligations 110,233 119,582 $ 308,768 $ 430,663
Gross Unrealized Gains and (Losses) Aggregated by Investment Category Short-Term Securities	The following tables show the gross unrealized gains and (losses) aggregated by investment category for short-term available-for-sale investments: As of March 31, 2016: Cost Gross Gross Estimated Short-term investments: Available-for-sale investments: Time deposits and certificates of deposit $ 23,005 $ — $ — $ 23,005 Bankers’ acceptance drafts 1,646 — — 1,646 Asset-backed securities 74,068 27 (38 ) 74,057 Corporate obligations 90,944 52 (140 ) 90,856 Municipal bonds 4,604 9 (2 ) 4,611 U.S. treasury obligations 4,355 5 — 4,360 U.S. agency obligations 110,216 24 (7 ) 110,233 $ 308,838 $ 117 $ (187 ) $ 308,768 As of December 31, 2015: Cost Gross Gross Estimated Short-term investments: Available-for-sale investments: Time deposits and certificates of deposit $ 11,893 $ — $ (1 ) $ 11,892 Bankers acceptance drafts 728 — — 728 Asset-backed securities 125,271 — (274 ) 124,997 Corporate obligations 165,445 5 (341 ) 165,109 Municipal bonds 8,346 13 (4 ) 8,355 U.S. agency obligations 119,699 3 (120 ) 119,582 $ 431,382 $ 21 $ (740 ) $ 430,663

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis	Assets and liabilities of the Company are measured at fair value on a recurring basis as of March 31, 2016 and are summarized as follows: Fair Value Measurements at Reporting Date Using Description March 31, 2016 Quoted Prices in Significant Significant Assets: Cash equivalents: Money market funds $ 197,650 $ 197,650 $ — $ — Bankers’ acceptance drafts 15 — 15 — Commercial paper 9,999 — 9,999 — U.S. agency obligations 35,496 — 35,496 — Available-for-sale investments: Time deposits and certificates of deposit 23,005 — 23,005 — Bankers’ acceptance drafts 1,646 — 1,646 — Asset-backed securities 74,057 — 74,057 — Corporate obligations 90,856 — 90,856 — Municipal bonds 4,611 — 4,611 — U.S. treasury obligations 4,360 — 4,360 — U.S. agency obligations 110,233 — 110,233 — Derivatives – currency forward contracts 487 — 487 — Total assets $ 552,415 $ 197,650 $ 354,765 $ — Liabilities: Derivatives – currency forward contracts $ 2,193 $ — $ 2,193 $ — Reported as follows: Assets: Cash and cash equivalents (1) $ 243,160 $ 197,650 $ 45,510 $ — Short-term investments 308,768 — 308,768 — Other current assets 487 — 487 — Total current assets $ 552,415 $ 197,650 $ 354,765 $ — Liabilities: Other current liabilities $ (2,193 ) $ — $ (2,193 ) $ — (1) The cash and cash equivalent amounts presented in the table above do not include cash of $102,950 and non-negotiable time deposits of $11,745 as of March 31, 2016. Assets and liabilities of the Company are measured at fair value on a recurring basis as of December 31, 2015 and are summarized as follows: Fair Value Measurements at Reporting Date Using Description December 31, 2015 Quoted Prices in Significant Other Significant Assets: Cash equivalents: Money market funds $ 106,099 $ 106,099 $ — $ — Bankers acceptance drafts 11 — 11 — Corporate obligations 330 — 330 — Available-for-sale investments: Time deposits and certificates of deposit 11,892 — 11,892 — Bankers’ acceptance drafts 728 — 728 — Asset-backed securities 124,997 — 124,997 — Corporate obligations 165,109 — 165,109 — Municipal bonds 8,355 — 8,355 — U.S. agency obligations 119,582 — 119,582 — Derivatives – currency forward contracts 1,486 — 1,486 — Total assets $ 538,589 $ 106,099 $ 432,490 $ — Liabilities: Derivatives – currency forward contracts Total liabilities $ 263 $ — $ 263 $ — Reported as follows: Assets: Cash and cash equivalents (1) $ 106,440 $ 106,099 $ 341 $ — Short-term investments 430,663 — 430,663 — Other current assets 1,486 — 1,486 — Total current assets $ 538,589 $ 106,099 $ 432,490 $ — Liabilities: Other current liabilities $ 263 $ — $ 263 $ — (1) The cash and cash equivalents amounts presented in the table above do not include cash of $110,118 and non-negotiable time deposits of $11,016 as of December 31, 2015.

Derivatives (Tables)

Derivatives (Tables)	3 Months Ended
	Mar. 31, 2016
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 March 31, 2016 and December 31, 2015: March 31, 2016 Currency Hedged (Buy/Sell) Gross Notional Fair Value (1) U.S. Dollar/Japanese Yen $ 19,664 $ (1,333 ) U.S. Dollar/South Korean Won 26,906 (208 ) U.S. Dollar/Euro 7,600 (286 ) U.S. Dollar/U.K. Pound Sterling 2,950 128 U.S. Dollar/Taiwan Dollar 8,676 (7 ) Total $ 65,796 $ (1,706 ) (1) Represents the fair value of the net (liability) asset amount included in the consolidated balance sheet. December 31, 2015 Currency Hedged (Buy/Sell) Gross Notional Fair Value (1) U.S. Dollar/Japanese Yen $ 26,848 $ (136 ) U.S. Dollar/South Korean Won 34,777 915 U.S. Dollar/Euro 10,987 19 U.S. Dollar/U.K. Pound Sterling 4,587 61 U.S. Dollar/Taiwan Dollar 12,790 364 Total $ 89,989 $ 1,223 (1) Represents the fair value of the net (liability) asset 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: Derivatives Designated as Hedging Instruments March 31, 2016 December 31, 2015 Derivative assets: Forward exchange contracts $ 487 $ 1,486 Derivative liabilities: Forward exchange contracts (2,193 ) (263 ) Total net derivative (liabilities) assets designated as hedging instruments (1) $ (1,706 ) $ 1,223 (1) The derivative asset of $487 and derivative liability of $2,193 are classified in other current assets and other current liabilities in the consolidated balance sheet as of March 31, 2016. The derivative asset of $1,486 and derivative liability of $263 are classified in other current assets and other current liabilities in the consolidated balance sheet as of December 31, 2015. These foreign exchange contracts are subject to a master netting agreement with one financial institution. However, the Company has elected to record these contracts on a gross basis in the balance sheet.
Summary of (Losses) Gains on Derivatives Designated as Hedging Instruments	The following table provides a summary of the (losses) gains on derivatives designated as hedging instruments: Three Months Ended March 31, Derivatives Designated as Cash Flow Hedging Instruments 2016 2015 Forward exchange contracts: Net loss recognized in OCI (1) $ (3,418 ) $ (2,090 ) Net gain reclassified from accumulated OCI into income (2) $ 696 $ 1,193 (1) Net change in the fair value of the effective portion classified in OCI. (2) Effective portion classified in cost of products for the three months ended March 31, 2016 and 2015. The tax effect of the gains or losses reclassified from accumulated OCI into income is immaterial.
Summary of (Losses) Gains on Derivatives Not Designated as Hedging Instruments	The following table provides a summary of the (losses) gains on derivatives not designated as hedging instruments: Three Months Ended March 31, Derivatives Not Designated as Hedging Instruments 2016 2015 Forward exchange contracts: Net (loss) gain recognized in income (1) $ (565 ) $ 98 (1) The Company enters into foreign exchange contracts to hedge against changes in the balance sheet for certain subsidiaries. These derivatives are not designated as hedging instruments and gains or losses from these derivatives are recorded immediately in selling, general and administrative expenses.

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 31, 2016
Inventory Disclosure [Abstract]
Summary of Inventories	Inventories consist of the following: March 31, 2016 December 31, 2015 Raw materials $ 78,707 $ 78,352 Work-in-process 24,665 23,297 Finished goods 48,278 50,982 $ 151,650 $ 152,631

Acquisitions (Tables)

Acquisitions (Tables) - Precisive, LLC [Member]	3 Months Ended
	Mar. 31, 2016
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 acquisition: Current assets $ 693 Non-current assets 18 Intangible assets 5,110 Goodwill 7,042 Total assets acquired 12,863 Total current liabilities assumed (343 ) Fair value of assets acquired and liabilities assumed 12,520 Less cash acquired (435 ) Total purchase price, net of cash acquired $ 12,085
Allocation of Acquired Intangible Assets and Related Estimates of Useful Lives	Substantially all of the purchase price is 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, which approximates the pattern of use. Order backlog $ 50 18 months Customer relationships 1,430 8 years Exclusive patent license 2,600 10 years Trade names 210 10 years Developed technology 820 10 years $ 5,110

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	The changes in the carrying amount of goodwill and accumulated impairment (loss) during the three months ended March 31, 2016 and year ended December 31, 2015 were as follows: 2016 2015 Gross Accumulated Net Gross Accumulated Net Beginning balance at January 1 $ 339,117 $ (139,414 ) $ 199,703 $ 331,795 $ (139,414 ) $ 192,381 Acquired goodwill (1) — — 8,017 — 8,017 Foreign currency translation 296 — 296 (695 ) — (695 ) Ending balance at March 31, 2016 and December 31, 2015 $ 339,413 $ (139,414 ) $ 199,999 $ 339,117 $ (139,414 ) $ 199,703 (1) During 2015, the Company recorded $7,042 of goodwill related to the acquisition of Precisive. During the second quarter of 2015, the Company recorded a purchase accounting adjustment of $975 primarily related to an inventory valuation adjustment related to the acquisition of Granville-Phillips.
Intangible Assets	Components of the Company’s intangible assets are comprised of the following: As of March 31, 2016: Gross Accumulated Foreign Net Completed technology $ 101,200 $ (82,939 ) $ (142 ) $ 18,119 Customer relationships 37,251 (17,251 ) 105 20,105 Patents, trademarks, trade names and other (1) 30,396 (26,056 ) 11 4,351 $ 168,847 $ (126,246 ) $ (26 ) $ 42,575 As of December 31, 2015 Gross Accumulated Foreign Net Completed technology (1) $ 101,200 $ (82,330 ) $ (272 ) $ 18,598 Customer relationships (1) 37,251 (16,345 ) 10 20,916 Patents, trademarks, trade names and other (1) 30,396 (25,888 ) 5 4,513 $ 168,847 $ (124,563 ) $ (257 ) $ 44,027 (1) During 2015, the Company recorded $5,110 of separately identified intangible assets related to the acquisition of Precisive, of which $820 was completed technology, $1,430 was customer relationships and $2,860 was patents, trademarks, trade names and other.
Estimated Amortization Expense	Estimated amortization expense for each of the remaining fiscal years is as follows: Year Amount 2016 (remaining) $ 4,990 2017 6,601 2018 6,586 2019 6,543 2020 6,489 2021 4,709 Thereafter 6,657

Other Assets (Tables)

Other Assets (Tables)	3 Months Ended
	Mar. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Other Assets	March 31, 2016 December 31, 2015 Other Current Assets: Income tax receivable $ 6,233 $ 8,682 Prepaid income tax 6,562 4,755 VAT tax receivable 186 3,264 Prepaid service and support 3,290 2,970 Other 11,117 7,089 Total other current assets $ 27,388 $ 26,760 Other Assets: Deferred tax assets, net $ 19,139 $ 19,252 Other 2,253 1,998 Total other assets $ 21,392 $ 21,250

Other Liabilities (Tables)

Other Liabilities (Tables)	3 Months Ended
	Mar. 31, 2016
Other Liabilities Disclosure [Abstract]
Schedule of Other Liabilities	March 31, 2016 December 31, 2015 Other Current Liabilities: VAT payable $ 5,221 $ 3,075 Customer prepayments 2,621 1,741 Product warranties 5,039 5,205 Deferred revenue 7,832 7,189 Other 24,659 18,149 Total other current liabilities $ 45,372 $ 35,359 Other Liabilities: Long-term income tax payable $ 3,832 $ 4,483 Accrued compensation 13,939 13,395 Other 3,879 3,604 Total other liabilities $ 21,650 $ 21,482

Product Warranties (Tables)

Product Warranties (Tables)	3 Months Ended
	Mar. 31, 2016
Guarantees [Abstract]
Product Warranty Activities	Product warranty activities were as follows: Three Months Ended March 31, 2016 2015 Beginning of period $ 5,205 $ 6,266 Provision for product warranties 783 1,109 Direct charges to warranty liability (984 ) (1,244 ) Foreign currency translation 35 (67 ) End of period $ 5,039 $ 6,064

Net Income Per Share (Tables)

Net Income Per Share (Tables)	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Income Per Share	The following table sets forth the computation of basic and diluted net income per share: Three Months Ended March 31, 2016 2015 Numerator: Net income $ 17,563 $ 33,786 Denominator: Shares used in net income per common share – basic 53,235,000 53,214,000 Effect of dilutive securities: Stock options, restricted stock and employee stock purchase plan 328,000 315,000 Shares used in net income per common share – diluted 53,563,000 53,529,000 Net income per common share: Basic $ 0.33 $ 0.63 Diluted $ 0.33 $ 0.63

Business Segment, Geographic 36

Business Segment, Geographic Area, Product and Significant Customer Information (Tables)	3 Months Ended
	Mar. 31, 2016
Segment Reporting [Abstract]
Net Revenues by Reportable Segment	The following is net revenues by reportable segment: Three Months Ended March 31, 2016 2015 Advanced Manufacturing Capital Equipment $ 153,570 $ 179,233 Global Service 30,060 27,743 Asia Region Sales (1) 43,848 55,377 Other 16,327 21,216 Corporate and Eliminations (60,124 ) (69,730 ) $ 183,681 $ 213,839
Reconciliation of Segment Gross Profit to Consolidated Net Income	The following is a reconciliation of segment gross profit to consolidated net income: Three Months Ended March 31, 2016 2015 Gross profit by reportable segment: Advanced Manufacturing Capital Equipment $ 67,630 $ 78,688 Global Service 9,644 9,603 Asia Region Sales (1) 2,413 6,920 Other 4,370 6,843 Corporate and Eliminations (6,144 ) (5,008 ) Total gross profit by reportable segment 77,913 97,046 Operating expenses: Research and development 17,227 16,680 Selling, general and administrative 33,950 30,867 Acquisition costs 2,494 30 Restructuring — 788 Amortization of intangible assets 1,683 1,671 Income from operations 22,559 47,010 Interest and other income, net 1,246 504 Income before income taxes 23,805 47,514 Provision for income taxes 6,242 13,728 Net income $ 17,563 $ 33,786 (1) The Asia Region Sales segment does not represent total geographical Asia financial information. This sales operation only represents the sales from the resale of Advanced Manufacturing Capital Equipment and Other segment products in their respective regions. The Advanced Manufacturing Capital Equipment and Other segments both have sales in this region as well. Accordingly, total geographical sales include sales from multiple reportable segments.
Schedule of Capital Expenditures, Depreciation and Amortization Expense and Segment Assets by Reportable Segment	The following is capital expenditures by reportable segment for the three months ended March 31, 2016 and 2015: Advanced Global Service Asia Region Other Corporate and Total Three Months Ended March 31, 2016: Capital expenditures $ 1,389 $ 39 $ 81 $ 28 $ 619 $ 2,156 Three Months Ended March 31, 2015: Capital expenditures $ 1,522 $ 122 $ 42 $ 74 $ 744 $ 2,504 The following is depreciation and amortization by reportable segment for the three months ended March 31, 2016 and 2015: Advanced Global Service Asia Region Other Corporate and Total Three Months Ended March 31, 2016: Depreciation and amortization $ 4,111 $ 255 $ 89 $ 244 $ 579 $ 5,278 Three Months Ended March 31, 2015: Depreciation and amortization $ 4,247 $ 256 $ 85 $ 310 $ 634 $ 5,532
Summary of Goodwill Associated with Reportable Segments	Goodwill associated with each of our reportable segments is as follows: March 31, 2016 December 31, 2015 Reportable segment: Advanced Manufacturing Capital Equipment $ 174,344 $ 174,344 Global Service 19,826 19,826 Asia Region Sales — — Other 6,228 6,228 Foreign currency translation (399 ) (695 ) Total goodwill $ 199,999 $ 199,703
Worldwide Net Revenue for Each Group of Products	Worldwide net revenue for each group of products is as follows: Three Months Ended March 31, 2016 2015 Instruments, Control and Vacuum Products $ 94,478 $ 110,436 Power and Reactive Gas Products 77,116 88,499 Analytical Solutions Products 12,087 14,904 $ 183,681 $ 213,839
Schedule of Net Revenues and Long-Lived Assets by Geographic Regions	Transfers between geographic areas are at negotiated transfer prices and have been eliminated from consolidated net revenues. Three Months Ended March 31, 2016 2015 Net revenues: United States $ 94,218 $ 120,181 Korea 20,550 32,072 Japan 16,236 17,256 Asia (excluding Korea and Japan) 33,456 23,683 Europe 19,221 20,647 $ 183,681 $ 213,839 March 31, 2016 December 31, 2015 Long-lived assets: (1) United States $ 55,620 $ 56,594 Europe 5,584 5,783 Asia 8,612 8,952 $ 69,816 $ 71,329 (1) Long-lived assets include property, plant and equipment, net and certain other long-term assets, excluding long-term tax related accounts.
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: Three Months Ended March 31, 2016 2015 Applied Materials, Inc. 18.8 % 17.4 % LAM Research Corporation 17.1 % 12.1 %

Investments - Fair Value of Inv

Investments - Fair Value of Investments Classified as Short-Term Available-for-Sale Investments (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	$ 308,768	$ 430,663
Time Deposits and Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	23,005	11,892
Bankers' Acceptance Drafts [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	1,646	728
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	74,057	124,997
Corporate Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	90,856	165,109
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	4,611	8,355
U.S. Treasury Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	4,360
U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value of available-for-sale investments	$ 110,233	$ 119,582

Investments - Gross Unrealized

Investments - Gross Unrealized Gains and (Losses) Aggregated by Investment Category Short-Term Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost		$ 431,382
Investments, Gross Unrealized Gains		21
Investments, Gross Unrealized (Losses)		(740)
Investments, Estimated Fair Value	$ 308,768	430,663
Time Deposits and Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Estimated Fair Value	23,005	11,892
Bankers' Acceptance Drafts [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Estimated Fair Value	1,646	728
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Estimated Fair Value	74,057	124,997
Corporate Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Estimated Fair Value	90,856	165,109
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Estimated Fair Value	4,611	8,355
U.S. Treasury Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Estimated Fair Value	4,360
U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Estimated Fair Value	110,233	119,582
Short-Term Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	308,838
Investments, Gross Unrealized Gains	117
Investments, Gross Unrealized (Losses)	(187)
Investments, Estimated Fair Value	308,768
Short-Term Investments [Member] | Time Deposits and Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	23,005	11,893
Investments, Gross Unrealized (Losses)		(1)
Investments, Estimated Fair Value	23,005	11,892
Short-Term Investments [Member] | Bankers' Acceptance Drafts [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	1,646	728
Investments, Estimated Fair Value	1,646	728
Short-Term Investments [Member] | Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	74,068	125,271
Investments, Gross Unrealized Gains	27
Investments, Gross Unrealized (Losses)	(38)	(274)
Investments, Estimated Fair Value	74,057	124,997
Short-Term Investments [Member] | Corporate Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	90,944	165,445
Investments, Gross Unrealized Gains	52	5
Investments, Gross Unrealized (Losses)	(140)	(341)
Investments, Estimated Fair Value	90,856	165,109
Short-Term Investments [Member] | Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	4,604	8,346
Investments, Gross Unrealized Gains	9	13
Investments, Gross Unrealized (Losses)	(2)	(4)
Investments, Estimated Fair Value	4,611	8,355
Short-Term Investments [Member] | U.S. Treasury Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	4,355
Investments, Gross Unrealized Gains	5
Investments, Estimated Fair Value	4,360
Short-Term Investments [Member] | U.S. Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Investments, Cost	110,216	119,699
Investments, Gross Unrealized Gains	24	3
Investments, Gross Unrealized (Losses)	(7)	(120)
Investments, Estimated Fair Value	$ 110,233	$ 119,582

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - currency forward contracts	$ 487	$ 1,486
Derivatives - currency forward contracts	2,193	263
Short-term investments	308,768	430,663
Available-for-sale investments	308,768	430,663
Other current assets	487	1,486
Other current liabilities	2,193	263
Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives - currency forward contracts	487	1,486
Total assets	552,415	538,589
Derivatives - currency forward contracts	2,193	263
Cash and cash equivalents	243,160	106,440
Short-term investments	308,768	430,663
Other current assets	487	1,486
Total current assets	552,415	538,589
Other current liabilities	2,193	263
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	197,650	106,099
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	15	11
Available-for-sale investments	1,646	728
Time Deposits and Certificates of Deposit [Member] | Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investments	23,005	11,892
Asset-Backed Securities [Member] | Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investments	74,057	124,997
U.S. Treasury Obligations [Member] | Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	35,496
Available-for-sale investments	4,360
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 investments	110,233	119,582
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]
Total assets	197,650	106,099
Cash and cash equivalents	197,650	106,099
Total current assets	197,650	106,099
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | 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	197,650	106,099
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	487	1,486
Total assets	354,765	432,490
Derivatives - currency forward contracts	2,193	263
Cash and cash equivalents	45,510	341
Short-term investments	308,768	430,663
Other current assets	487	1,486
Total current assets	354,765	432,490
Other current liabilities	2,193	263
Significant Other Observable Inputs (Level 2) [Member] | 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	15	11
Available-for-sale investments	1,646	728
Significant Other Observable Inputs (Level 2) [Member] | Time Deposits and Certificates of Deposit [Member] | Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investments	23,005	11,892
Significant Other Observable Inputs (Level 2) [Member] | Asset-Backed Securities [Member] | Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investments	74,057	124,997
Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury Obligations [Member] | Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	35,496
Available-for-sale investments	4,360
Significant Other Observable Inputs (Level 2) [Member] | 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 investments	110,233	119,582
Commercial Paper [Member] | Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	9,999
Commercial Paper [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	9,999
Corporate Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investments	90,856	165,109
Corporate Obligations [Member] | Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		330
Available-for-sale investments	90,856	165,109
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]
Cash and cash equivalents		330
Available-for-sale investments	90,856	165,109
Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investments	4,611	8,355
Municipal Bonds [Member] | Fair Value Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investments	4,611	8,355
Municipal Bonds [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 investments	$ 4,611	$ 8,355

Fair Value Measurements - Sch40

Fair Value Measurements - Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash/Non-negotiable time deposits - not subject to fair value disclosure requirements	$ 357,855	$ 227,574	$ 192,713	$ 305,437
Cash [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash/Non-negotiable time deposits - not subject to fair value disclosure requirements	102,950	110,118
Non-Negotiable Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash/Non-negotiable time deposits - not subject to fair value disclosure requirements	$ 11,745	$ 11,016

Derivatives - Additional Inform

Derivatives - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
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	$ 65,796	$ 89,989
Accumulated other comprehensive income realization period	12 months

Derivatives - Summary of Primar

Derivatives - Summary of Primary Net Hedging Positions and Corresponding Fair Values (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Currency Hedged (Buy/Sell), Gross Notional Value, Net	$ 65,796	$ 89,989
Currency Hedged (Buy/Sell), Fair Value, Asset/(Liability), Net	(1,706)	1,223
Forward Exchange Contracts [Member] | U.S. Dollar/Japanese Yen [Member]
Derivative [Line Items]
Currency Hedged (Buy/Sell), Gross Notional Value, Net	19,664	26,848
Currency Hedged (Buy/Sell), Fair Value, Asset/(Liability), Net	(1,333)	(136)
Forward Exchange Contracts [Member] | U.S. Dollar/South Korean Won [Member]
Derivative [Line Items]
Currency Hedged (Buy/Sell), Gross Notional Value, Net	26,906	34,777
Currency Hedged (Buy/Sell), Fair Value, Asset/(Liability), Net	(208)	915
Forward Exchange Contracts [Member] | U.S. Dollar/Euro [Member]
Derivative [Line Items]
Currency Hedged (Buy/Sell), Gross Notional Value, Net	7,600	10,987
Currency Hedged (Buy/Sell), Fair Value, Asset/(Liability), Net	(286)	19
Forward Exchange Contracts [Member] | U.S. Dollar/U.K. Pound Sterling [Member]
Derivative [Line Items]
Currency Hedged (Buy/Sell), Gross Notional Value, Net	2,950	4,587
Currency Hedged (Buy/Sell), Fair Value, Asset/(Liability), Net	128	61
Forward Exchange Contracts [Member] | U.S. Dollar/Taiwan Dollar [Member]
Derivative [Line Items]
Currency Hedged (Buy/Sell), Gross Notional Value, Net	8,676	12,790
Currency Hedged (Buy/Sell), Fair Value, Asset/(Liability), Net	$ (7)	$ 364

Derivatives - Summary of Fair V

Derivatives - Summary of Fair Value Amounts of Company's Derivative Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Forward exchange contracts, assets	$ 487	$ 1,486
Forward exchange contracts, liabilities	(2,193)	(263)
Total net derivative (liabilities) assets designated as hedging instruments	(1,706)	1,223
Derivatives Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Forward exchange contracts, assets	487	1,486
Forward exchange contracts, liabilities	(2,193)	(263)
Total net derivative (liabilities) assets designated as hedging instruments	$ (1,706)	$ 1,223

Derivatives - Summary of Fair44

Derivatives - Summary of Fair Value Amounts of Company's Derivative Instruments (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative asset classified in other current assets	$ 487	$ 1,486
Derivative liability classified in other current liabilities	$ 2,193	$ 263

Derivatives - Summary of (Losse

Derivatives - Summary of (Losses) Gains on Derivatives Designated as Hedging Instruments (Detail) - Forward Exchange Contracts [Member] - Cash Flow Hedging [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Net loss recognized in OCI	$ (3,418)	$ (2,090)
Net gain reclassified from accumulated OCI into income	$ 696	$ 1,193

Derivatives - Summary of (Los46

Derivatives - Summary of (Losses) Gains on Derivatives Not Designated as Hedging Instruments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Net (loss) gain recognized in income	$ (565)	$ 98

Inventories - Summary of Invent

Inventories - Summary of Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Raw materials	$ 78,707	$ 78,352
Work-in-process	24,665	23,297
Finished goods	48,278	50,982
Inventories	$ 151,650	$ 152,631

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 17, 2015	Mar. 31, 2015
Business Acquisition [Line Items]
Payments to acquire business, net of cash acquired		$ 9,867
Precisive, LLC [Member]
Business Acquisition [Line Items]
Payments to acquire business, net of cash acquired	$ 12,085
Business acquisition, cash acquired	$ 435
Business acquisition, deferred consideration payment period	15 months
Business acquisition, deferred consideration payment	$ 2,600

Acquisitions - Summary of Estim

Acquisitions - Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Mar. 17, 2015	Mar. 31, 2015	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill			$ 199,999	$ 199,703	$ 192,381
Total purchase price, net of cash acquired		$ 9,867
Precisive, LLC [Member]
Business Acquisition [Line Items]
Current assets	$ 693
Non-current assets	18
Intangible assets	5,110
Goodwill	7,042			$ 7,042
Total assets acquired	12,863
Total current liabilities assumed	(343)
Total purchase price	12,520
Less cash acquired	(435)
Total purchase price, net of cash acquired	$ 12,085

Acquisitions - Allocation of Ac

Acquisitions - Allocation of Acquired Intangible Assets and Related Estimates of Useful Lives (Detail) - Precisive, LLC [Member] - USD ($) $ in Thousands	Mar. 17, 2015	Dec. 31, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price	$ 5,110	$ 5,110
Order Backlog [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price	$ 50
Estimated useful life of finite-lived intangible assets	18 months
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price	$ 1,430	$ 1,430
Estimated useful life of finite-lived intangible assets	8 years
Exclusive Patent License [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price	$ 2,600
Estimated useful life of finite-lived intangible assets	10 years
Trade names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price	$ 210
Estimated useful life of finite-lived intangible assets	10 years
Developed Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price	$ 820
Estimated useful life of finite-lived intangible assets	10 years

Goodwill and Intangible Asset51

Goodwill and Intangible Assets - Goodwill (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance, Goodwill Gross Carrying Amount	$ 339,117	$ 331,795
Acquired goodwill, Gross Carrying Amount		8,017
Foreign currency translation, Gross Carrying Amount	296	(695)
Ending balance, Goodwill Gross Carrying Amount	339,413	339,117
Beginning balance, Accumulated Impairment (Loss)	(139,414)	(139,414)
Acquired goodwill, Accumulated Impairment (Loss)	0	0
Foreign currency translation, Accumulated Impairment (Loss)	0	0
Ending balance, Accumulated Impairment (Loss)	(139,414)	(139,414)
Beginning balance, Goodwill Net	199,703	192,381
Acquired goodwill, Net		8,017
Foreign currency translation, Net	296	(695)
Ending balance, Goodwill Net	$ 199,999	$ 199,703

Goodwill and Intangible Asset52

Goodwill and Intangible Assets - Goodwill (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Mar. 31, 2016	Dec. 31, 2015	Mar. 17, 2015	Dec. 31, 2014
Goodwill [Line Items]
Goodwill		$ 199,999	$ 199,703		$ 192,381
Precisive, LLC [Member]
Goodwill [Line Items]
Goodwill			$ 7,042	$ 7,042
Granville-Phillips [Member]
Goodwill [Line Items]
Acquisition purchase price	$ 975

Goodwill and Intangible Asset53

Goodwill and Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	$ 168,847	$ 168,847
Accumulated Amortization	(126,246)	(124,563)
Foreign Currency Translation	(26)	(257)
Intangible assets, net	42,575	44,027
Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	101,200	101,200
Accumulated Amortization	(82,939)	(82,330)
Foreign Currency Translation	(142)	(272)
Intangible assets, net	18,119	18,598
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	37,251	37,251
Accumulated Amortization	(17,251)	(16,345)
Foreign Currency Translation	105	10
Intangible assets, net	20,105	20,916
Patents, Trademarks, Trade Names and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Gross	30,396	30,396
Accumulated Amortization	(26,056)	(25,888)
Foreign Currency Translation	11	5
Intangible assets, net	$ 4,351	$ 4,513

Goodwill and Intangible Asset54

Goodwill and Intangible Assets - Intangible Assets (Parenthetical) (Detail) - Precisive, LLC [Member] - USD ($) $ in Thousands	Mar. 17, 2015	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 5,110	$ 5,110
Completed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets		820
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets	$ 1,430	1,430
Patents, Trademarks, Trade Names and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets		$ 2,860

Goodwill and Intangible Asset55

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 1,683	$ 1,671

Goodwill and Intangible Asset56

Goodwill and Intangible Assets - Estimated Amortization Expense (Detail) $ in Thousands	Mar. 31, 2016USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2016 (remaining)	$ 4,990
2,017	6,601
2,018	6,586
2,019	6,543
2,020	6,489
2,021	4,709
Thereafter	$ 6,657

Other Assets - Schedule of Othe

Other Assets - Schedule of Other Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Other Current Assets:
Income tax receivable	$ 6,233	$ 8,682
Prepaid income tax	6,562	4,755
VAT tax receivable	186	3,264
Prepaid service and support	3,290	2,970
Other	11,117	7,089
Total other current assets	27,388	26,760
Other Assets:
Deferred tax assets, net	19,139	19,252
Other	2,253	1,998
Total other assets	$ 21,392	$ 21,250

Other Liabilities - Schedule of

Other Liabilities - Schedule of Other Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Other Current Liabilities:
VAT payable	$ 5,221	$ 3,075
Customer prepayments	2,621	1,741
Product warranties	5,039	5,205	$ 6,064	$ 6,266
Deferred revenue	7,832	7,189
Other	24,659	18,149
Total other current liabilities	45,372	35,359
Other Liabilities:
Long-term income tax payable	3,832	4,483
Accrued compensation	13,939	13,395
Other	3,879	3,604
Total other liabilities	$ 21,650	$ 21,482

Debt - Additional Information (

Debt - Additional Information (Detail) - Japan [Member]	3 Months Ended
	Mar. 31, 2016USD ($)Institution	Dec. 31, 2015USD ($)
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	$ 20,455,000
Total borrowings outstanding	$ 0	$ 0

Product Warranties - Product Wa

Product Warranties - Product Warranty Activities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Guarantees [Abstract]
Beginning of period	$ 5,205	$ 6,266
Provision for product warranties	783	1,109
Direct charges to warranty liability	(984)	(1,244)
Foreign currency translation	35	(67)
End of period	$ 5,039	$ 6,064

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Income Taxes [Line Items]
Effective tax rate	26.20%	28.90%
Gross unrecognized tax benefits excluding interest and penalties	$ 3,712		$ 4,332
Net unrecognized tax benefit excluding interest and penalties that would impact effective tax rate	3,707
Accrued interest on unrecognized tax benefits	125		$ 157
Net unrecognized tax benefits, related to foreign tax positions	$ 1,469
Income tax examination, description	The Company and its subsidiaries are subject to examination by U.S. federal, state and foreign tax authorities. The United States Internal Revenue Service commenced an examination of the Company's U.S. federal tax filings for tax years 2011 through 2013 during the quarter ended March 31, 2015.
Earliest Tax Year [Member] | Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Open tax year	2,011

Net Income Per Share - Computat

Net Income Per Share - Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Numerator:
Net income	$ 17,563	$ 33,786
Denominator:
Shares used in net income per common share - basic	53,235,000	53,214,000
Effect of dilutive securities:
Stock options, restricted stock and employee stock purchase plan	328,000	315,000
Shares used in net income per common share - diluted	53,563,000	53,529,000
Net income per common share:
Basic	$ 0.33	$ 0.63
Diluted	$ 0.33	$ 0.63

Net Income Per Share - Addition

Net Income Per Share - Additional Information (Detail) - shares	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Earnings Per Share [Abstract]
Stock options and restricted stock units outstanding	737,000
Number of shares excluded from computation of diluted earnings per share	0	0

Stockholder's Equity - Addition

Stockholder's Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	May. 02, 2016	Mar. 31, 2016	Mar. 31, 2015	Jul. 25, 2011
Stockholders Equity [Line Items]
Common stock, value of shares authorized to repurchase				$ 200,000
Stock repurchase, shares		45,000	0
Value of shares repurchased		$ 1,545
Average price of repurchased shares		$ 34.50
Cash dividends per common share		$ 0.170	$ 0.165
Dividend payment to common shareholders		$ 9,056	$ 8,784
Subsequent Event [Member]
Stockholders Equity [Line Items]
Dividend declared date	May 2, 2016
Cash dividend to be paid	$ 0.17
Dividend to be paid date	Jun. 10, 2016
Dividend declared, shareholders of record date	May 30, 2016

Business Segment, Geographic 65

Business Segment, Geographic Area, Product and Significant Customer Information - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2016SegmentProductCustomer
Segment Reporting [Abstract]
Number of reportable segments | Segment	4
Number of product groups | Product	3
Number of customers with net revenues greater than 10% of total net revenues | Customer	2
Entity wide net revenue major customer percentage minimum	10.00%

Business Segment, Geographic 66

Business Segment, Geographic Area, Product and Significant Customer Information - Net Revenues by Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Total net revenues	$ 183,681	$ 213,839
Operating Segments [Member] | Advanced Manufacturing Capital Equipment [Member]
Segment Reporting Information [Line Items]
Total net revenues	153,570	179,233
Operating Segments [Member] | Global Service [Member]
Segment Reporting Information [Line Items]
Total net revenues	30,060	27,743
Operating Segments [Member] | Asia Region Sales [Member]
Segment Reporting Information [Line Items]
Total net revenues	43,848	55,377
Operating Segments [Member] | Other [Member]
Segment Reporting Information [Line Items]
Total net revenues	16,327	21,216
Corporate and Eliminations [Member]
Segment Reporting Information [Line Items]
Total net revenues	$ (60,124)	$ (69,730)

Business Segment, Geographic 67

Business Segment, Geographic Area, Product and Significant Customer Information - Reconciliation of Segment Gross Profit to Consolidated Net Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Gross profit	$ 77,913	$ 97,046
Research and development	17,227	16,680
Selling, general and administrative	33,950	30,867
Acquisition costs	2,494	30
Restructuring		788
Amortization of intangible assets	1,683	1,671
Income from operations	22,559	47,010
Interest and other income, net	1,246	504
Income before income taxes	23,805	47,514
Provision for income taxes	6,242	13,728
Net income	17,563	33,786
Operating Segments [Member] | Advanced Manufacturing Capital Equipment [Member]
Segment Reporting Information [Line Items]
Gross profit	67,630	78,688
Operating Segments [Member] | Global Service [Member]
Segment Reporting Information [Line Items]
Gross profit	9,644	9,603
Operating Segments [Member] | Asia Region Sales [Member]
Segment Reporting Information [Line Items]
Gross profit	2,413	6,920
Operating Segments [Member] | Other [Member]
Segment Reporting Information [Line Items]
Gross profit	4,370	6,843
Corporate and Eliminations [Member]
Segment Reporting Information [Line Items]
Gross profit	$ (6,144)	$ (5,008)

Business Segment, Geographic 68

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	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Capital expenditures	$ 2,156	$ 2,504
Depreciation and amortization	5,278	5,532
Operating Segments [Member] | Advanced Manufacturing Capital Equipment [Member]
Segment Reporting Information [Line Items]
Capital expenditures	1,389	1,522
Depreciation and amortization	4,111	4,247
Operating Segments [Member] | Global Service [Member]
Segment Reporting Information [Line Items]
Capital expenditures	39	122
Depreciation and amortization	255	256
Operating Segments [Member] | Asia Region Sales [Member]
Segment Reporting Information [Line Items]
Capital expenditures	81	42
Depreciation and amortization	89	85
Operating Segments [Member] | Other [Member]
Segment Reporting Information [Line Items]
Capital expenditures	28	74
Depreciation and amortization	244	310
Corporate and Eliminations [Member]
Segment Reporting Information [Line Items]
Capital expenditures	619	744
Depreciation and amortization	$ 579	$ 634

Business Segment, Geographic 69

Business Segment, Geographic Area, Product and Significant Customer Information - Summary of Goodwill Associated with Reportable Segments (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Goodwill	$ 199,999	$ 199,703	$ 192,381
Operating Segments [Member] | Advanced Manufacturing Capital Equipment [Member]
Segment Reporting Information [Line Items]
Goodwill	174,344	174,344
Operating Segments [Member] | Global Service [Member]
Segment Reporting Information [Line Items]
Goodwill	19,826	19,826
Operating Segments [Member] | Other [Member]
Segment Reporting Information [Line Items]
Goodwill	6,228	6,228
Segment Reconciling Items [Member] | Foreign Currency Translation [Member]
Segment Reporting Information [Line Items]
Goodwill	$ (399)	$ (695)

Business Segment, Geographic 70

Business Segment, Geographic Area, Product and Significant Customer Information - Worldwide Net Revenue for Each Group of Products (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue from External Customer [Line Items]
Net sales from product groups	$ 183,681	$ 213,839
Instruments, Control and Vacuum Products [Member]
Revenue from External Customer [Line Items]
Net sales from product groups	94,478	110,436
Power and Reactive Gas Products [Member]
Revenue from External Customer [Line Items]
Net sales from product groups	77,116	88,499
Analytical Solutions Products [Member]
Revenue from External Customer [Line Items]
Net sales from product groups	$ 12,087	$ 14,904

Business Segment, Geographic 71

Business Segment, Geographic Area, Product and Significant Customer Information - Schedule of Net Revenues and Long-Lived Assets by Geographic Regions (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 183,681	$ 213,839
Long-lived assets	69,816		$ 71,329
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	94,218	120,181
Long-lived assets	55,620		56,594
Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	20,550	32,072
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	16,236	17,256
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	19,221	20,647
Long-lived assets	5,584		5,783
Asia (Excluding Korea and Japan) [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	33,456	$ 23,683
Long-lived assets	$ 8,612		$ 8,952

Business Segment, Geographic 72

Business Segment, Geographic Area, Product and Significant Customer Information - Customers with Net Revenues Greater than 10% of Total Net Revenues (Detail) - Customer Concentration Risk [Member] - Sales Revenue, Net [Member]	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Applied Materials, Inc [Member]
Revenue, Major Customer [Line Items]
Percentage of total net revenues	18.80%	17.40%
LAM Research Corporation [Member]
Revenue, Major Customer [Line Items]
Percentage of total net revenues	17.10%	12.10%

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	Apr. 29, 2016	Apr. 27, 2016	Mar. 31, 2016	Mar. 31, 2015
Subsequent Event [Line Items]
Acquisition related costs			$ 2,494	$ 30
Subsequent Event [Member] | Reno Sub-Systems Inc [Member]
Subsequent Event [Line Items]
Investments in minority interest		$ 9,300
Subsequent Event [Member] | Newport [Member]
Subsequent Event [Line Items]
Business acquisition share price	$ 23
Acquisition of business, cash acquired gross	$ 905,000
Acquisition related costs	93,000
Subsequent Event [Member] | Newport [Member] | Term Loan Credit Agreement [Member] | Secured Debt [Member]
Subsequent Event [Line Items]
Secured term loan, face amount	780,000
Subsequent Event [Member] | Newport [Member] | Asset Based Credit Agreement [Member] | Secured Debt [Member]
Subsequent Event [Line Items]
Secured term loan, face amount	$ 50,000