Entegris (ENTG) 10-K 17 Feb 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2016	Feb. 14, 2017	Jul. 02, 2016
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Trading Symbol	ENTG
Entity Registrant Name	ENTEGRIS INC
Entity Central Index Key	1,101,302
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		141,220,481
Entity Public Float			$ 1,819,711,619

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 406,389	$ 349,825
Short-term investments	0	2,181
Trade accounts and notes receivable, net	165,675	141,409
Inventories, net	183,529	173,176
Deferred tax charges and refundable income taxes	20,140	18,943
Other current assets	24,398	23,253
Total current assets	800,131	708,787
Property, plant and equipment, net	321,562	321,301
Other assets:
Goodwill	345,269	342,111
Intangible assets, net	217,548	258,942
Deferred tax assets and other noncurrent tax assets	8,022	7,771
Other	7,000	7,785
Total assets	1,699,532	1,646,697
Current liabilities:
Long-term debt, current maturities	100,000	50,000
Accounts payable	61,617	36,916
Accrued payroll and related benefits	54,317	41,891
Other accrued liabilities	29,213	33,968
Income taxes payable	16,424	12,775
Total current liabilities	261,571	175,550
Long-term debt, excluding current maturities	484,677	606,044
Pension benefit obligations and other liabilities	27,220	24,608
Deferred tax liabilities and other noncurrent tax liabilities	26,846	37,612
Commitments and contingent liabilities	0	0
Equity:
Preferred stock, par value $.01; 5,000,000 shares authorized; none issued and outstanding	0	0
Common stock, par value $.01; 400,000,000 shares authorized; issued and outstanding shares: 141,319, 964 and 140,716,420	1,413	1,407
Additional paid-in capital	859,778	848,667
Retained earnings (deficit)	92,303	(416)
Accumulated other comprehensive income	(54,276)	(46,775)
Total equity	899,218	802,883
Total liabilities and equity	$ 1,699,532	$ 1,646,697

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	141,319,964	140,716,420
Common stock, shares outstanding	141,319,964	140,716,420

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net sales	$ 1,175,270	$ 1,081,121	$ 962,069
Cost of sales	666,579	610,890	585,386
Gross profit	508,691	470,231	376,683
Selling, general and administrative expenses	201,901	198,914	231,833
Engineering, research and development expenses	106,991	105,900	87,711
Amortization of intangible assets	44,263	47,349	37,067
Contingent consideration fair value adjustment	0	0	(1,282)
Operating income	155,536	118,068	21,354
Interest expense	36,846	38,667	33,355
Interest income	(318)	(429)	(1,336)
Other (income) expense, net	(991)	(12,355)	2,727
Income (loss) before income tax expense (benefit) and equity in net loss of affiliate	119,999	92,185	(13,392)
Income tax expense (benefit)	22,852	10,202	(21,572)
Equity in net loss of affiliate	0	1,687	293
Net income	$ 97,147	$ 80,296	$ 7,887
Earnings Per Share:
Basic net income per common share	$ 0.69	$ 0.57	$ 0.06
Diluted net income per common share	$ 0.68	$ 0.57	$ 0.06
Weighted shares outstanding
Basic	141,093	140,353	139,311
Diluted	142,050	141,121	140,062

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net income	$ 97,147	$ 80,296	$ 7,887
Other comprehensive loss, net of tax
Foreign currency translation adjustments	(7,352)	(44,569)	(26,948)
Unrealized gain (loss) on available-for-sale investments	0	611	(1,884)
Reclassification adjustment associated with unrealized loss realized upon the write-down of available-for-sale investments	0	0	1,884
Reclassification adjustment associated with the sale of available-for-sale investments	(611)	0	0
Pension liability adjustments, net of income tax expense (benefit) of $82, ($45), and ($71) for year ended December 31, 2016, 2015, and 2014	462	(142)	(150)
Other comprehensive loss	(7,501)	(44,100)	(27,098)
Comprehensive income (loss)	$ 89,646	$ 36,196	$ (19,211)

Consolidated Statements Of Com6

Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension liability adjustments, income tax expense (benefit)	$ 82	$ (45)	$ (71)

Consolidated Statements Of Equi

Consolidated Statements Of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common stock	Additional paid-in capital	Retained earnings (deficit)	Foreign currency translation adjustments	Available-for-sale investments-Change in net unrealized gains	Defined benefit pension adjustments
Balance (in shares) at Dec. 31, 2013		138,734
Balance at Dec. 31, 2013	$ 756,843	$ 1,387	$ 819,632	$ (88,599)	$ 25,280	$ 0	$ (857)
Shares issued under stock plans (in shares)		1,059
Shares issued under stock plans	1,080	$ 11	1,069	0	0	0	0
Share-based compensation expense	8,887	0	8,887	0	0	0	0
Tax benefit associated with stock plans	842	0	842	0	0	0	0
Pension liability adjustment	(150)	0	0	0	0	0	(150)
Reclassification adjustment associated with the sale of available-for-sale investments	0
Unrealized gain (loss) on available-for-sale investments	(1,884)
Foreign currency translation	(26,948)	0	0	0	(26,948)	0	0
Net income	7,887	$ 0	0	7,887	0	0	0
Balance (in shares) at Dec. 31, 2014		139,793
Balance at Dec. 31, 2014	748,441	$ 1,398	830,430	(80,712)	(1,668)	0	(1,007)
Shares issued under stock plans (in shares)		923
Shares issued under stock plans	1,756	$ 9	1,747	0	0	0	0
Share-based compensation expense	11,033	0	11,033	0	0	0	0
Tax benefit associated with stock plans	5,457	0	5,457	0	0	0	0
Pension liability adjustment	(142)	0	0	0	0	0	(142)
Reclassification adjustment associated with the sale of available-for-sale investments	0
Unrealized gain (loss) on available-for-sale investments	611	0	0	0	0	611	0
Foreign currency translation	(44,569)	0	0	0	(44,569)	0	0
Net income	80,296	$ 0	0	80,296	0	0	0
Balance (in shares) at Dec. 31, 2015		140,716
Balance at Dec. 31, 2015	802,883	$ 1,407	848,667	(416)	(46,237)	611	(1,149)
Shares issued under stock plans (in shares)		1,123
Shares issued under stock plans	826	$ 11	815	0	0	0	0
Share-based compensation expense	13,436	$ 0	13,436	0	0	0	0
Repurchase and retirement of common stock (in shares)		(519)
Repurchase and retirement of common stock	(7,573)	$ (5)	(3,140)	(4,428)
Pension liability adjustment	462	0	0	0	0	0	462
Reclassification adjustment associated with the sale of available-for-sale investments	(611)	0	0	0	0	(611)	0
Unrealized gain (loss) on available-for-sale investments	0
Foreign currency translation	(7,352)	0	0	0	(7,352)	0	0
Net income	97,147	$ 0	0	97,147	0	0	0
Balance (in shares) at Dec. 31, 2016		141,320
Balance at Dec. 31, 2016	$ 899,218	$ 1,413	$ 859,778	$ 92,303	$ (53,589)	$ 0	$ (687)

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities:
Net income	$ 97,147	$ 80,296	$ 7,887
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	55,623	54,305	46,637
Amortization	44,263	47,349	37,067
Share-based compensation expense	13,436	11,033	8,887
Charge for fair value write-up of acquired inventory sold	0	0	48,586
Provision for deferred income taxes	(16,284)	(13,313)	(44,716)
Charge for excess and obsolete inventory	9,302	8,311	4,513
Excess tax benefit from share-based compensation plans	0	(5,457)	(842)
Amortization of debt issuance costs	3,947	3,344	5,848
Other	9,744	(20,299)	2,209
Changes in operating assets and liabilities, net of effects of acquisitions:
Trade accounts receivable and notes receivable	(25,298)	5,212	(4,845)
Inventories	(19,871)	(26,670)	(11,608)
Accounts payable and other accrued liabilities	31,294	(28,686)	14,348
Other current assets	185	654	(1,699)
Income taxes payable and refundable income taxes	3,408	4,955	10,975
Other	659	(116)	3,176
Net cash provided by operating activities	207,555	120,918	126,423
Investing activities:
Acquisition of property and equipment	(65,260)	(71,977)	(57,733)
Acquisition of business, net of cash acquired	0	0	(809,390)
Proceeds from sale or maturities of short-term investments	1,726	7,692	13,778
Proceeds from sale of assets held for sale	0	0	0
Payments for non-compete agreements	0	0	(7,517)
Other	(3,152)	647	567
Net cash used in investing activities	(66,686)	(63,638)	(860,295)
Financing activities:
Proceeds from long-term debt	0	0	855,200
Payments of long-term debt	(75,000)	(100,000)	(88,650)
Payments for debt issuance costs	0	0	(20,747)
Issuance of common stock from employee stock plans	4,844	4,264	3,559
Taxes paid related to net share settlement of equity awards	(4,018)	(2,508)	(2,479)
Repurchase and retirement of common stock	(7,573)	0	0
Other	0	5,457	765
Net cash (used in) provided by financing activities	(81,747)	(92,787)	747,648
Effect of exchange rate changes on cash and cash equivalents	(2,558)	(4,367)	(8,503)
Increase (decrease) in cash and cash equivalents	56,564	(39,874)	5,273
Cash and cash equivalents at beginning of year	349,825	389,699	384,426
Cash and cash equivalents at end of year	406,389	349,825	389,699
Supplemental Cash Flow Information
Equipment purchases in accounts payable	5,104	3,757	3,702
Schedule of interest and income taxes paid:
Interest paid	32,085	35,126	21,919
Income taxes, net of refunds received	$ 35,722	$ 16,060	$ 12,274

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations Entegris, Inc. (Entegris or the Company) is a leading global developer, manufacturer and supplier of microfiltration control products, specialty chemicals and advanced materials handling solutions for manufacturing processes in the semiconductor and other high-technology industries. Principles of Consolidation The consolidated financial statements include the accounts of the Company and its majority-owned subsidiaries. Intercompany profits, transactions and balances have been eliminated in consolidation. Use of Estimates and Basis of Presentation The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make judgments, estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. On an ongoing basis, Entegris evaluates its estimates, including those related to receivables, inventories, property, plant and equipment, intangible assets, accrued liabilities, income taxes and share-based compensation, among others. Actual results could differ from those estimates. Cash and Cash Equivalents Cash and cash equivalents include cash on hand and highly liquid debt securities with original maturities of three months or less, which are valued at cost and approximates fair value. Allowance for Doubtful Accounts An allowance for uncollectible trade receivables is estimated based on a combination of write-off history, aging analysis and any specific, known troubled accounts. The Company maintains an allowance for doubtful accounts that management believes is adequate to cover expected losses on trade receivables. Inventories Inventories are stated at the lower of cost or market. Cost is determined by the first-in, first-out (FIFO) method. Property, Plant, and Equipment Property, plant and equipment are carried at cost and are depreciated on the straight-line method over the estimated useful lives of the assets. When assets are retired or disposed of, the cost and related accumulated depreciation are removed from the accounts, and gains or losses are recognized in the same period. Maintenance and repairs are expensed as incurred, while significant additions and improvements are capitalized. Long-lived assets, including property, plant and equipment, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or group of assets may not be recoverable based on estimated future undiscounted cash flows. The amount of impairment, if any, is measured as the difference between the net book value and the estimated fair value of the asset(s). Investments The Company’s nonmarketable investments are accounted for under either the cost or equity method of accounting, as appropriate. All nonmarketable investments are periodically reviewed to determine whether declines, if any, in fair value below cost basis are other-than-temporary. If the decline in fair value is determined to be other-than-temporary, an impairment loss is recorded and the investment is written down to a new cost basis. Fair Value of Financial Instruments The carrying value of cash equivalents, accounts receivable, accounts payable, accrued payroll and related benefits, and other accrued liabilities approximates fair value due to the short maturity of those instruments. The fair value of long-term debt, including current maturities, based upon models utilizing market observable (Level 2) inputs and credit risk, was $602 million at December 31, 2016 compared to the carrying amount of long-term debt, including current maturities, of $585 million . Goodwill and Intangible Assets Goodwill represents the excess of acquisition costs over the fair value of the net assets of businesses acquired. Goodwill is not subject to amortization, but is tested for impairment annually at August 31, the Company's annual testing date, and whenever events or changes in circumstances indicate that impairment may have occurred. The Company compares the carrying value of its reporting units, including goodwill, to their fair value. For reporting units in which the assessment indicates that it is more likely than not that the fair value is more than its carrying value, goodwill is not considered impaired. If the carrying value of the reporting unit exceeds fair value, goodwill is considered impaired. Based on its annual analysis, the Company determined there was no indication of impairment of goodwill. In the fourth quarter of 2016, the Company changed its financial segment reporting as described in note 15. The Company performed additional analysis in connection with this organizational revision, which included changes to its reporting unit structure. Based on this assessment, there was no indication of impairment of goodwill and the estimated fair value of each reporting unit substantially exceeded its carrying value. Amortizable intangible assets include, among other items, patented, unpatented and other developed technology and customer-based intangibles, and are amortized using the straight-line method over their respective estimated useful lives of 3 to 15 years. The Company reviews intangible assets, along with other long-lived assets - primarily property, plant and equipment - for impairment if changes in circumstances or the occurrence of events suggest the remaining value may not be recoverable. At December 31, 2016 , the Company concluded there was no impairment of its intangible assets. Derivative Financial Instruments The Company records derivatives as assets or liabilities on the balance sheet and measures such instruments at fair value. Changes in fair value of derivatives are recorded each period in the Company’s consolidated statements of operations. The Company periodically enters into forward foreign currency contracts to reduce exposures relating to rate changes in certain foreign currencies. Certain exposures to credit losses related to counterparty nonperformance exist. However, the Company does not anticipate nonperformance by the counterparties since they are large, well-established financial institutions. None of these derivatives is accounted for as a hedge transaction. Accordingly, changes in the fair value of forward foreign currency contracts are recorded as other (income) expense, net, in the Company’s consolidated statements of operations. The fair values of the Company’s derivative financial instruments are based on prices quoted by financial institutions for these instruments. Foreign Currency Translation Assets and liabilities of certain foreign subsidiaries are translated from foreign currencies into U.S. dollars at period-end exchange rates, and the resulting gains and losses arising from translation of net assets located outside the U.S. are recorded as a cumulative translation adjustment, a component of accumulated other comprehensive loss in the consolidated balance sheets. Income statement amounts are translated at the weighted average exchange rates for the year. Translation adjustments are not adjusted for income taxes, as substantially all translation adjustments relate to permanent investments in non-U.S. subsidiaries. Gains and losses resulting from foreign currency transactions are included in other(income) expense, net, in the Company's consolidated statements of operations. Revenue Recognition Revenue and the related cost of sales are generally recognized upon shipment of the products. Revenue for product sales is recognized upon delivery, when persuasive evidence of an arrangement exists, when title and risk of loss have been transferred to the customer, collectability is reasonably assured, and pricing is fixed or determinable. Shipping and handling fees related to sales transactions are billed to customers and are recorded as revenue. The Company sells its products throughout the world primarily to companies in the microelectronics industry. The Company performs continuing credit evaluations of its customers and generally does not require collateral. Letters of credit may be required from its customers in certain circumstances. The Company provides for estimated returns based on historical and current trends in both sales and product returns. The Company collects various sales and value-added taxes on certain product and service sales that are accounted for on a net basis. Shipping and Handling Costs Shipping and handling costs incurred are recorded in cost of sales in the Company's consolidated statements of operations. Engineering, Research and Development Expenses Engineering, research and development costs are expensed as incurred. Share-based Compensation The Company measures the cost of employee services received in exchange for the award of equity instruments based on the fair value of the award at the date of grant. Compensation expense is based on the grant date fair value. The cost is recognized using the straight-line attribution method to recognize share-based compensation over the service period of the award. Because share-based compensation expense recognized in the Company's consolidated statements of operations is based on awards ultimately expected to vest, it has been reduced for expected forfeitures, which are estimated at the time of grant with such estimates revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Income Taxes The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income tax expense in the period that includes the enactment date. The Company recognizes deferred tax assets to the extent that it believes these assets are more likely than not to be realized. A valuation allowance is recorded to reduce deferred tax assets when it is more likely than not that the Company would not be able to realize all or part of its deferred tax assets. In making such a determination, the Company considers all available positive and negative evidence, including future reversals of existing temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If the Company determines that it would be able to realize its deferred tax assets in the future in excess of their net recorded amount, the Company would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes. The Company’s policy for recording interest and penalties associated with audits and unrecognized tax benefits is to record such items as a component of income before taxes. Penalties and interest to be paid or received are recorded in other expense (income), net, in the statement of operations. Comprehensive Income (Loss) Comprehensive income (loss) represents the change in equity resulting from items other than shareholder investments and distributions. The Company’s foreign currency translation adjustments, unrealized gains and losses on available-for-sale investments, and minimum pension liability adjustments are included in accumulated other comprehensive loss. Comprehensive income (loss) and the components of accumulated other comprehensive loss are presented in the accompanying consolidated statements of comprehensive income (loss) and consolidated statements of equity. Recent Accounting Pronouncements Adopted in 2016 In April 2015, the Financial Standards Accounting Board (FASB) issued Accounting Standards Update (ASU) No. 2015-03, Simplifying the Presentation of Debt Issuance Costs (ASU No. 2015-03) which requires an entity to present debt issuance costs as a direct deduction from the carrying amount of the related debt liability on the balance sheet. The update requires retrospective application and represents a change in accounting principle. The update became effective January 1, 2016. Based on the balances as of December 31, 2015, in accordance with ASU No. 2015-03, the Company reclassified $11.2 million of unamortized debt issuance costs from other current assets and other noncurrent assets to long-term debt. Recent Accounting Pronouncements Yet to be Adopted In May 2014, the Financial Standards Accounting Board (FASB) issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) (ASU No. 2014-09). ASU No. 2014-09 outlines a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This new revenue recognition model provides a five-step analysis in determining when and how revenue is recognized. As such, revenue for its contracts will generally be recognized as control transfers to the customer, which is consistent with the revenue recognition model currently used for the majority of the Company's contracts. ASU No. 2014-09 may be applied either retrospectively or through the use of a modified-retrospective method. ASU No. 2014-09 also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers. ASU No. 2014-09 is effective for the Company beginning January 1, 2018. The Company is currently assessing the impact that adopting this new accounting guidance will have on its consolidated financial statements and disclosures. To assist in this assessment, and to oversee the eventual adoption of ASU No. 2014-09, the Company has established a cross-functional steering committee. The initial analysis of identifying revenue streams and potential impacts of the new guidance is substantially complete, and the Company is now analyzing the potential magnitude to the consolidated financial statements and related disclosures. Based on its preliminary evaluation of ASU No. 2014-09, the Company does not currently expect it to have a material impact on its results of operations or cash flows in the periods after adoption. The Company has not yet selected a transition approach. The Company expects to complete its assessment of the cumulative effect of adopting ASU No. 2014-09 as well as the selection of a transition approach during the first half of 2017. The evaluation of ASU No. 2014-09 will continue through the date of adoption. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) . ASU No. 2016-02 requires the identification of arrangements that should be accounted for as leases by lessees. In general, for lease arrangements exceeding a twelve-month term, these arrangements must now be recognized as assets and liabilities on the balance sheet of the lessee. Under ASU No. 2016-02, a right-of-use asset and lease obligation will be recorded for all leases, whether operating or financing, while the income statement will reflect lease expense for operating leases, and amortization and interest expense for financing leases. The balance sheet amount recorded for existing leases at the date of adoption of ASU No. 2016-02 must be calculated using the applicable incremental borrowing rate at the date of adoption. In addition, ASU No. 2016-02 requires the use of the modified retrospective method, which will require adjustment to all comparative periods presented in the consolidated financial statements. ASU No. 2016-02 is effective beginning January 1, 2019. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements and disclosures, and the timing of adoption. In April 2016, the FASB issued ASU No. 2016-09, Compensation-Stock Compensation (Topic 718) , which simplifies several aspects of the accounting for employee share-based payment transactions, including the accounting for tax effects related to share-based payments, forfeitures, and statutory tax withholding requirements, and the classification of tax-related cash flows in the statement of cash flows. ASU No. 2016-09 is effective for the Company beginning January 1, 2017. The Company's current assessment of the pronouncement indicates that the impact upon adoption will not be material to its consolidated financial statements and and related disclosures.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2016
Acquisitions [Abstract]
Acquisitions	ACQUISITIONS ATMI On April 30, 2014, the Company acquired ATMI, Inc. (the Merger), a Delaware corporation (ATMI), for approximately $1.1 billion in cash pursuant to an Agreement and Plan of Merger (the Merger Agreement), dated as of February 4, 2014. As a result of the Merger, ATMI became a wholly-owned subsidiary of the Company. The Merger was accounted for under the acquisition method of accounting and the results of operations of ATMI are included in the Company's consolidated financial statements as of and since April 30, 2014. Direct costs of $13.3 million associated with the acquisition of ATMI, consisting of professional and consulting fees, and bridge financing costs, were expensed as incurred in the year ended December 31, 2014. These costs are included in selling, general and administrative expense and interest expense, respectively, in the Company's consolidated statements of operations. ATMI was a leading supplier of high-performance materials, materials packaging and materials delivery systems used worldwide in the manufacture of microelectronic devices. These products consist of “front-end” semiconductor performance materials, sub-atmospheric pressure gas delivery systems for safe handling and delivery of toxic and hazardous gases, and high-purity materials packaging and dispensing systems that allow for the reliable introduction of low volatility liquids and solids to microelectronics processes. The acquisition was executed to expand the Company’s product offering base and technological base, and enhance the leverage of its selling and administrative functions. ATMI’s sales for the year ended December 31, 2013 were approximately $361 million . The purchase price of ATMI consisted of the following: (In thousands): Cash paid to ATMI shareholders $ 1,099,033 Cash paid in settlement of share-based compensation awards 31,451 Total purchase price 1,130,484 Less cash and cash equivalents acquired 321,094 Total purchase price, net of cash acquired $ 809,390 Under the terms of the Merger Agreement, the Company paid $34 per share for all outstanding common shares of ATMI (excluding treasury shares). In addition, the Company settled all outstanding share-based compensation awards held by ATMI employees at the same per share price. The acquisition method of accounting requires the Company to include the amount associated with pre-combination service as consideration in the acquisition, reflected in the table immediately above, while the fair value of the unvested portion of the awards in the amount of $21.3 million is recorded as expense, classified as selling, general and administrative expense, in the Company's consolidated statement of operations. The Merger was funded with existing cash balances as well as funds raised by the Company through the issuance of debt in the form of a senior secured term loan in an aggregate principal amount of $460 million and senior unsecured notes in an aggregate principal amount of $360 million as described in note 7 to the consolidated financial statements. The following table summarizes the allocation of the purchase price to the fair values assigned to the assets acquired and liabilities assumed at the date of the ATMI acquisition: (In thousands): Accounts receivable and other current assets $ 109,965 Inventory 114,200 Property, plant and equipment 124,025 Identifiable intangible assets 297,040 Other noncurrent assets 8,503 Current liabilities (60,943 ) Deferred tax liabilities and other noncurrent liabilities (124,929 ) Net assets acquired 467,861 Goodwill 341,529 Total purchase price, net of cash acquired $ 809,390 The final valuation of assets acquired and liabilities assumed was completed in the second quarter of 2015. The fair value write-up of acquired finished goods inventory was $48.6 million . This amount was recorded as an incremental cost of sales charge, amortized over the expected turn of the acquired inventory, during the year ended December 31, 2014. The fair value of acquired property, plant and equipment of $124.0 million is valued at its value-in-use. The fair value of the acquired identifiable intangible assets is $297.0 million . The acquired intangible assets, all of which are finite-lived, have a weighted average useful life of approximately 8.3 years and are being amortized on a straight-line basis. The intangible assets that comprise the amount include customer relationships of $165.1 million ( 10 -year weighted average useful life), developed technology and related trade names of $120.8 million ( 6 -year weighted average useful life), and other intangible assets of $11.1 million ( 7.4 -year weighted average useful life). The fair value of acquired identifiable intangible assets was determined using the “income approach” on an individual project basis. In performing these valuations, the key underlying probability-adjusted assumptions of the discounted cash flows were projected revenues, gross margin expectations and operating cost estimates. The valuations were based on the information that was available as of the acquisition date and the expectations and assumptions that have been deemed reasonable by the Company’s management. There are inherent uncertainties and management judgment required in these determinations. The fair value measurements of the assets acquired and liabilities assumed were based on valuations involving significant unobservable inputs, or Level 3 in the fair value hierarchy. The purchase price of ATMI exceeded the net of the acquisition-date amounts of the identifiable assets acquired and the liabilities assumed by $341.5 million . Cash flows used to determine the purchase price included strategic and synergistic benefits (investment value) specific to the Company, which resulted in a purchase price in excess of the fair value of identifiable net assets. The purchase price also included the fair values of other assets that were not identifiable, not separately recognizable under accounting rules (e.g., assembled workforce) or of immaterial value in addition to a going-concern element that represents the Company's ability to earn a higher rate of return on the group of assets than would be expected on the separate assets as determined during the valuation process. This additional investment value resulted in goodwill. No amount of goodwill is expected to be deductible for income tax purposes. Subsequent to the Merger, the Company agreed to make severance payments of $7.5 million to ATMI executives. Under the terms of various agreements, the executives are unable to compete with the Company for specified periods. Based on the Company's analysis, the payments associated with these noncompete clauses were capitalized as finite-lived intangible assets to be amortized over periods averaging 1.6 years . The fair value of these noncompete clauses was determined using the “income approach” on an individual executive basis, following a methodology similar to the one described above for acquired identifiable intangible assets. Pro Forma Results (Unaudited) The following unaudited pro forma financial information presents the combined results of operations of the Company as if the acquisition of ATMI had occurred as of the beginning of the years presented. The unaudited pro forma financial information is not necessarily indicative of what the Company’s consolidated results of operations actually would have been had the acquisition occurred at the beginning of each year. In addition, the unaudited pro forma financial information does not attempt to project the future results of operations of the combined company. Year ended (In thousands, except per share data) (Unaudited) December 31, 2014 Net sales $ 1,076,334 Net income 68,279 Per share amounts: Net income per common share - basic $ 0.49 Net income per common share - diluted 0.49 The unaudited pro forma financial information above gives effect to the following: a. The elimination of transactions between Entegris and ATMI, which upon completion of the merger would be considered intercompany. This reflects the elimination of intercompany sales and associated intercompany accounts. b. Incremental amortization and depreciation expense related to the estimated fair value of identifiable intangible assets and property, plant and equipment from the purchase price allocation. c. Removal of the operating results of ATMI's discontinued operations. The unaudited pro forma financial information above for the year ended December 31, 2014 excludes the purchase accounting impact of the incremental charge reported in cost of sales for the sale of acquired inventory that was written-up to fair value of $48.6 million .

Trade Accounts and Notes Receiv

Trade Accounts and Notes Receivable	12 Months Ended
	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Trade Accounts and Notes Receivable	TRADE ACCOUNTS AND NOTES RECEIVABLE Trade accounts and notes receivable from customers at December 31, 2016 and 2015 consist of the following: (In thousands) 2016 2015 Accounts receivable $ 163,759 $ 138,473 Notes receivable 4,390 4,254 168,149 142,727 Less allowance for doubtful accounts 2,474 1,318 $ 165,675 $ 141,409

Inventories

Inventories	12 Months Ended
	Dec. 31, 2016
Inventories	INVENTORIES Inventories at December 31, 2016 and 2015 consist of the following: (In thousands) 2016 2015 Raw materials $ 53,109 $ 51,063 Work-in-process 15,976 11,644 Finished goods (a) 114,444 110,469 $ 183,529 $ 173,176 (a) Includes consignment inventories held by customers for $16.4 million and $16.1 million at December 31, 2016 and 2015 , respectively.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment	PROPERTY, PLANT AND EQUIPMENT Property, plant, and equipment at December 31, 2016 and 2015 consists of the following: (In thousands) 2016 2015 Estimated useful lives in years Land $ 15,903 $ 14,630 Buildings and improvements 155,769 155,337 5-35 Manufacturing equipment 248,201 233,473 5-10 Canisters and cylinders 65,100 54,263 3-12 Molds 76,782 82,019 3-5 Office furniture and equipment 107,194 98,291 3-8 Construction in progress 40,136 25,128 709,085 663,141 Less accumulated depreciation 387,523 341,840 $ 321,562 $ 321,301 The table below sets forth the depreciation expense for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Depreciation expense $ 55,623 $ 54,305 $ 46,637

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2016
Intangible Assets	GOODWILL AND INTANGIBLE ASSETS Goodwill activity for each of the Company's two reportable segments that carry goodwill, Specialty Chemicals and Engineered Materials (SCEM) and Advanced Materials Handling (AMH), for the years ended December 31, 2016 and 2015 is shown below: (In thousands) SCEM AMH Total December 31, 2014 $ 293,260 $ 47,483 $ 340,743 Addition due to purchase accounting adjustments 4,972 — 4,972 Other, including foreign currency translation (3,532 ) (72 ) (3,604 ) December 31, 2015 294,700 47,411 342,111 Addition due to purchase accounting adjustments 4,434 — 4,434 Other, including foreign currency translation (1,276 ) — (1,276 ) December 31, 2016 $ 297,858 $ 47,411 $ 345,269 As of December 31, 2016 , goodwill amounted to approximately $345.3 million , an increase of $3.2 million from the balance at December 31, 2015 . The increase in goodwill in 2016 reflects purchase accounting adjustments to the Company's deferred tax liabilities related to the acquisition of ATMI described in note 2. The increase was partially offset by the foreign currency translation adjustments. Identifiable intangible assets at December 31, 2016 and 2015 consist of the following: 2016 (In thousands) Gross carrying Amount Accumulated amortization Net carrying value Weighted average life in years Developed technology 202,591 126,077 76,514 6.7 Trademarks and trade names 16,661 12,617 4,044 9.9 Customer relationships 216,918 90,581 126,337 10.3 Other 18,585 7,932 10,653 6.5 $ 454,755 $ 237,207 $ 217,548 8.5 2015 (In thousands) Gross carrying amount Accumulated amortization Net carrying value Weighted average life in years Developed technology 202,732 102,883 99,849 6.7 Trademarks and trade names 16,676 10,681 5,995 9.9 Customer relationships 218,283 72,948 145,335 10.3 Other 15,135 7,372 7,763 5.7 $ 452,826 $ 193,884 $ 258,942 8.5 The table below sets forth the amortization expense for the years ended December 31, 2016 , 2015 , and 2014 : (In thousands) 2016 2015 2014 Amortization expense $ 44,263 $ 47,349 $ 37,067 The amortization expense for each of the five succeeding years and thereafter relating to intangible assets currently recorded in the Company's consolidated balance sheets is estimated to be the following at December 31, 2016 : Fiscal year ending December 31 (In thousands) 2017 $ 43,101 2018 42,721 2019 40,480 2020 25,694 2021 18,951 Thereafter 46,601 $ 217,548

Debt

Debt	12 Months Ended
	Dec. 31, 2016
Debt [Abstract]
Debt	DEBT Long-term debt at December 31, 2016 and 2015 consists of the following: (In thousands) December 31, 2016 December 31, 2015 Senior secured term loan facility due 2021 $ 233,850 $ 308,850 Senior unsecured notes due 2022 360,000 360,000 593,850 668,850 Unamortized discount and debt issuance costs 9,173 12,806 Total long-term debt 584,677 656,044 Less current maturities of long-term debt 100,000 50,000 Long-term debt less current maturities $ 484,677 $ 606,044 Annual maturities of long-term debt contractually due as of December 31, 2016 are as follows: Fiscal year ending December 31 (In thousands) 2017 $ — 2018 — 2019 — 2020 — 2021 233,850 Thereafter 360,000 $ 593,850 As described in note 2 to the consolidated financial statements, the Company issued debt with a principal amount of $820 million to supply the funding required to complete its acquisition of ATMI. Debt issuance costs of $2.3 million paid directly to lending institutions are recorded as a debt discount, while debt issuance costs of $20.7 million paid to third parties are capitalized as debt issuance costs. These debt issuance costs are being amortized as interest expense over the term of the debt instrument using the effective-interest method for the senior secured term loan facility and senior unsecured notes, and the straight-line method for the senior secured asset-based revolving credit facility. In the years ended December 31, 2016 , 2015 and 2014, the Company expensed debt issuance costs of $3.9 million , $3.3 million and $5.8 million , respectively, including $4.0 million for bridge financing fees paid for the availability of funding for the acquisition of ATMI in 2014. These amounts are included in interest expense in the Company's consolidated statements of operations. Senior Secured Term Loan Facility On April 30, 2014 , the Company entered into a term loan credit and guaranty agreement with Goldman Sachs Bank USA, as administrative agent, collateral agent, sole lead arranger, sole bookrunner and sole syndication agent (the Term Loan Facility), that provides senior secured financing of $460 million (which may be increased by up to $225 million in certain circumstances). Borrowings under the Term Loan Facility bear interest at a rate per annum equal to, at the Company’s option, a base rate (such as prime rate or LIBOR) plus, an applicable margin. The Company's interest rate is 3.52% at December 31, 2016 . In addition to paying interest on outstanding principal under the Term Loan Facility, the Company is required to pay customary agency fees. During the years ended December 31, 2016 and 2015, the Company made payments of $75.0 million and $100.0 million , respectively, on the Term Loan Facility. As of December 31, 2016 , under the terms of the Term Loan Facility, the Company is not obligated to remit payments on the Term Loan Facility in 2017. However, based on management's plans and intent, the Company reflects $100 million as the current maturity of long-term debt in its consolidated balance sheet as of December 31, 2016 . The credit agreement governing the Term Loan Facility requires the Company to prepay outstanding term loans, subject to certain exceptions, with (a) up to 50% of the Company’s annual Excess Cash Flow (as defined in the credit agreement governing the Term Loan Facility) and (b) 100% of the net cash proceeds of (i) certain asset sales and casualty and condemnation events, subject to reinvestment rights and certain other exceptions; and (ii) any incurrence or issuance of certain debt, other than debt permitted under the Term Loan Facility. The Company may voluntarily prepay outstanding loans under the Term Loan Facility at any time without premium or penalty other than customary “breakage” costs with respect to LIBOR loans. All obligations under the Term Loan Facility are unconditionally guaranteed by certain of the Company’s existing wholly owned domestic subsidiaries, and are secured, subject to certain exceptions, by substantially all of the Company’s assets and the assets of the Company's subsidiary guarantors. The Term Loan Facility contains a number of negative covenants that, subject to certain exceptions, restrict the Company’s ability and each of the Company’s subsidiaries' ability to incur additional indebtedness; pay dividends on its capital stock or redeem, repurchase or retire its capital stock or its other indebtedness; make investments, loans and acquisitions; create restrictions on the payment of dividends or other amounts to the Company from the Company’s restricted subsidiaries; engage in transactions with its affiliates; sell assets, including capital stock of its subsidiaries; materially alter the business it conducts; consolidate or merge; incur liens; and engage in sale-leaseback transactions. The credit agreement governing the Term Loan Facility additionally contains certain customary representations and warranties, affirmative covenants and provisions relating to events of default. The Company is in compliance with all of the above covenants at December 31, 2016 . 2022 Senior Unsecured Notes On April 1, 2014 , the Company issued $360 million aggregate principal amount of 6% senior unsecured notes due April 1, 2022 (the 2022 Senior Unsecured Notes). The 2022 Senior Unsecured Notes were issued under an indenture dated as of April 1, 2014 (the 2022 Senior Unsecured Notes Indenture) by and among the Company and Wells Fargo Bank, National Association, as trustee (the 2022 Senior Unsecured Notes Trustee). Interest on the 2022 Senior Unsecured Notes is payable semi-annually in arrears on April 1 and October 1, commencing October 1, 2014. The 2022 Senior Unsecured Notes are guaranteed, jointly and severally, fully and unconditionally, on an unsecured senior basis, by each of the Company’s domestic subsidiaries (the Guarantors) that guarantee indebtedness under the Company’s senior secured term loan facility and senior secured asset-based revolving credit facility (Senior Secured Credit Facilities). As provided in the Senior Unsecured Notes Indenture, the Company may at its option on one or more occasions redeem all or a part of the 2022 Senior Unsecured Notes at a redemption price equal to (a) 100% of the principal amount of the 2022 Senior Unsecured Notes redeemed plus a make-whole premium if redeemed prior to April 1, 2017 , or (b) a percentage of principal amount between a percentage from 100% and 104.5% of the aggregate principal amount of notes to be redeemed depending on the period of redemption, if redeemed on or after April 1, 2017 , plus, in each case, accrued and unpaid interest thereto. Upon a change in control, the Company is required to offer to purchase all of the 2022 Senior Unsecured Notes at a price in cash equal to 101% of the aggregate principal amount thereof, plus accrued and unpaid interest, if any, to, but not including, the date of purchase. If the Company or its subsidiaries engage in asset sales, the Company generally must either invest the net cash proceeds from such sales in its business within a period of time, prepay debt under the Senior Secured Credit Facilities or make an offer to purchase a principal amount of the 2022 Senior Unsecured Notes equal to the excess net cash proceeds, subject to certain exceptions. The 2022 Senior Unsecured Notes Indenture contains covenants that, among other things, limit the Company’s ability and the ability of the Company’s restricted subsidiaries to pay dividends or distributions or redeem or repurchase equity; prepay subordinated debt or make certain investments, loans, advances and acquisitions; incur or guarantee additional debt, or issue certain disqualified stock and preferred stock; create liens; engage in a consolidation or merger, or sell, transfer or otherwise dispose of all or substantially all of their assets; enter into transactions with affiliates; and create restrictions on the payment of dividends or other amounts to the Company from its restricted subsidiaries. The Company is in compliance with all of the above covenants at December 31, 2016 . The 2022 Senior Unsecured Notes Indenture also provides for events of default which, if certain of them occur, would permit the trustee or the holders of at least 25% in aggregate principal amount of the then total outstanding 2022 Senior Unsecured Notes to declare the principal, premium, if any, interest and any other monetary obligations on all the then-outstanding 2022 Senior Unsecured Notes to be due and payable immediately. Senior Secured Asset-Based Revolving Credit Facility The Company has an asset-based credit agreement with Goldman Sachs Bank USA, as administrative agent, collateral agent, sole lead arranger, sole bookrunner and sole syndication agent (the ABL Facility), that provides senior secured financing of $75 million (which may be increased by up to $35 million in certain circumstances), subject to a borrowing base limitation. The borrowing base for the ABL Facility at any time equals the sum of certain percentages of various accounts and inventories and stood at $60.0 million at December 31, 2016 . The ABL Facility includes borrowing capacity in the form of letters of credit up to $35 million of the facility, and up to $20 million in U.S. dollars for borrowings on same-day notice, referred to as swingline loans. Borrowings under the ABL Facility bear interest at a rate per annum equal to, at the Company’s option, a base rate (prime rate or LIBOR), plus an applicable margin. Swingline loans shall bear interest at a rate per annum equal to the base rate plus the applicable margin. In addition to paying interest on outstanding principal under the ABL Facility, the Company is required to pay a commitment fee of 0.33% per annum in respect of the unutilized commitments thereunder. The Company must also pay customary letter of credit fees and agency fees. The Company may voluntarily reduce the unutilized portion of the commitment amount and repay outstanding loans at any time. Prepayments of the loans may be made without premium or penalty other than customary “breakage” costs with respect to LIBOR loans. There is no scheduled amortization under the Company’s ABL Facility. The principal amount outstanding under the ABL Facility is due and payable in full on April 30, 2019. There is no outstanding balance under the ABL Facility at December 31, 2016 . All obligations under the ABL Facility are unconditionally guaranteed by certain of the Company’s existing wholly owned domestic subsidiaries and are secured, subject to certain exceptions, by substantially all of the Company’s assets and the assets of the Company's subsidiaries that have guaranteed the ABL Facility. The ABL Facility contains a number of negative covenants that, among other things, subject to certain exceptions, restrict the Company’s ability and the ability of each of the Company’s subsidiaries to incur additional indebtedness; pay dividends on its capital stock or redeem, repurchase or retire its capital stock or its other indebtedness; make investments, loans and acquisitions; create restrictions on the payment of dividends or other amounts to the Company from the Company’s restricted subsidiaries; engage in transactions with its affiliates; sell assets, including capital stock of its subsidiaries; materially alter the business it conducts; consolidate or merge; incur liens; and engage in sale-leaseback transactions. The credit agreement governing the ABL Facility additionally contains certain customary representations and warranties, affirmative covenants and provisions relating to events of default. The Company is in compliance with all of the above covenants at December 31, 2016 .

Lease Commitments

Lease Commitments	12 Months Ended
	Dec. 31, 2016
Lease Commitments	LEASE COMMITMENTS As of December 31, 2016 , the Company was obligated under noncancellable operating lease agreements for certain sales offices and manufacturing facilities, manufacturing equipment, vehicles, information technology equipment and warehouse space. Future minimum lease payments for noncancellable operating leases with initial or remaining terms in excess of one year are as follows: Fiscal year ending December 31 (In thousands) 2017 $ 9,837 2018 7,356 2019 5,635 2020 4,220 2021 3,860 Thereafter 14,090 Total minimum lease payments $ 44,998 Total rental expense for all equipment and building operating leases for the years ended December 31, 2016 , 2015 and 2014 , were $13.3 million , $13.8 million and $13.3 million , respectively.

Asset Retirement Obligations (N

Asset Retirement Obligations (Notes)	12 Months Ended
	Dec. 31, 2016
Asset Retirement Obligation [Abstract]
Asset Retirement Obligations	ASSET RETIREMENT OBLIGATIONS In connection with the acquisition of ATMI described in note 2, the Company assumed asset retirement obligations (AROs) related to environmental disposal obligations associated with cylinders used to supply customers with ATMI's products, and certain restoration obligations associated with its leased facilities. Prior to the acquisition, the Company also had AROs related certain restoration obligations associated with its leased facilities. Changes in the carrying amounts of the Company’s AROs for the years ended December 31, 2016 and 2015 are shown below: (In thousands) 2016 2015 Balance at beginning of year $ 11,334 $ 9,950 Liabilities assumed in ATMI acquisition — 589 Liabilities settled (975 ) (698 ) Liabilities incurred 491 1,094 Accretion expense 188 196 Revision of estimate 491 203 Balance at end of year $ 11,529 $ 11,334 ARO liabilities expected to be settled within twelve months are included in the consolidated balance sheets in other accrued liabilities, while all other ARO liabilities are included in pension benefit obligations and other liabilities in the consolidated balance sheets.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Taxes	INCOME TAXES Income (loss) before income taxes for the years ended December 31, 2016 , 2015 and 2014 was derived from the following sources: (In thousands) 2016 2015 2014 Domestic $ (7,328 ) $ (16,751 ) $ (118,917 ) Foreign 127,327 108,936 105,525 Income (loss) before income tax expense (benefit) and equity in net loss of affiliates $ 119,999 $ 92,185 $ (13,392 ) Income tax expense (benefit) for the years ended December 31, 2016 , 2015 and 2014 is summarized as follows: (In thousands) 2016 2015 2014 Current: Federal $ 7,759 $ 4,170 $ 1,574 State (10 ) 528 111 Foreign 31,387 18,817 21,459 39,136 23,515 23,144 Deferred (net of valuation allowance): Federal (8,183 ) (11,374 ) (41,484 ) State 250 (738 ) (1,545 ) Foreign (8,351 ) (1,201 ) (1,687 ) (16,284 ) (13,313 ) (44,716 ) Income tax expense (benefit) $ 22,852 $ 10,202 $ (21,572 ) Income tax (benefit) expense differs from the expected amounts based upon the statutory federal tax rates for the years ended December 31, 2016 , 2015 and 2014 as follows: (In thousands) 2016 2015 2014 Expected federal income tax at statutory rate $ 42,000 $ 32,265 $ (4,687 ) State income taxes before valuation allowance, net of federal tax effect (769 ) (576 ) (2,115 ) Effect of foreign source income (22,242 ) (23,374 ) (19,996 ) Tax contingencies 1,103 1,483 1,379 Valuation allowance 1,713 1,109 2,106 Non-deductible acquisition costs — 363 2,176 U.S. federal research credit (1,676 ) (3,905 ) (2,085 ) Other items, net 2,723 2,837 1,650 Income tax expense (benefit) $ 22,852 $ 10,202 $ (21,572 ) As a result of commitments made by the Company related to investments in tangible property and equipment, the establishment of a research and development center in 2006 and certain employment commitments, income from certain manufacturing activities in Malaysia has been exempt from tax for years up through 2015. The income tax benefits attributable to the tax status of this subsidiary are $10.2 million ( $0.07 cents per diluted share) and $8.0 million ( $0.06 cents per diluted share) for the years ended December 31, 2015 , and 2014 , respectively. The 2016, 2015 and 2014 effective tax rates include additional benefits of $4.3 million , $4.4 million , and $3.3 million , respectively, because the corporate tax rate in Malaysia is lower than the U.S. rate. In 2012, Entegris' Korean subsidiary made commitments to produce a certain line of products. In return for this commitment, the Company has a tax holiday on income earned on sales of these products for five years and a partial holiday for two additional years. The income tax benefit attributable to this tax holiday are $3.3 million ( $0.02 cents per diluted share), $1.5 million ( $0.01 cent per diluted share) and $0.2 million ( $0.00 cent per diluted share) for the years ended December 31, 2016, 2015 and 2014, respectively. The 2016, 2015 and 2014 effective tax rates include additional benefits of $1.9 million , $0.9 million and $0.2 million , respectively, because the corporate tax rate in Korea is lower than the U.S. rate. The Company also has made employment and spending commitments to Singapore. In return for those commitments, the Company has been granted a partial tax holiday for eight years starting in 2013. The income tax benefits attributable to the tax status are $2.3 million ( $0.02 cents per diluted share), $1.7 million ( $0.01 cent per diluted share) and $1.2 million ( $0.01 cent per diluted share) for the years ending December 31, 2016, 2015 and 2014, respectively. The 2016, 2015 and 2014 effective tax rates include additional benefits of $6.5 million , $4.6 million and $3.7 million , because the corporate tax rate in Singapore is lower than the U.S. rate. The 2014 effective tax rate reflects a $2.6 million benefit related to foreign tax credits. The significant components of the Company’s deferred tax assets and deferred tax liabilities at December 31, 2016 and 2015 are as follows: (In thousands) 2016 2015 Deferred tax assets attributable to: Accounts receivable $ 470 $ 64 Inventory 5,061 5,491 Accruals not currently deductible for tax purposes 3,729 6,661 Net operating loss and credit carryforwards 27,198 12,247 Capital loss carryforward 3,134 2,141 Depreciation 8,395 21,834 Equity compensation 5,134 4,673 Asset impairments 1,467 1,751 Other, net 4,356 3,578 Gross deferred tax assets 58,944 58,440 Valuation allowance (14,661 ) (12,724 ) Total deferred tax assets 44,283 45,716 Deferred tax liabilities attributable to: Purchased intangible assets (55,809 ) (68,610 ) Total deferred tax liabilities (55,809 ) (68,610 ) Net deferred tax liabilities $ (11,526 ) $ (22,894 ) Deferred tax assets are generally required to be reduced by a valuation allowance if, based on the weight of available positive and negative evidence, it is more likely than not that some portion or all of the deferred tax assets will not be realized. As of December 31, 2016 and 2015 , the Company had a net U.S. deferred tax liability of $3.5 million and $12.6 million , respectively, which are composed of temporary differences and various tax credit carryforwards. Management believes that it is more likely than not that the benefit from certain state net operating loss carryforwards, state credits, capital asset impairments, and a federal capital loss carryforward will not be realized. In recognition of this risk, management has provided a valuation allowance of $9.6 million and $8.9 million as of December 31, 2016 and 2015 , respectively, on the related deferred tax assets. If the assumptions change and management determines the assets will be realized, the tax benefits relating to any reversal of the valuation allowance on deferred tax assets at December 31, 2016 will be recognized as a reduction of income tax expense. As of December 31, 2016 and 2015 , the Company had a net non-U.S. deferred tax asset of $6.6 million and $2.4 million , respectively, for which management determined based upon the available evidence a valuation allowance of $5.0 million and $3.8 million as of December 31, 2016 and 2015, respectively, was required against the non-U.S. gross deferred tax assets. For other non-U.S. jurisdictions, management is relying upon projections of future taxable income to utilize deferred tax assets. At December 31, 2016 , there were approximately $822.0 million of accumulated undistributed earnings of subsidiaries outside the United States, all of which are considered to be reinvested indefinitely. Management has considered its future cash needs and affirms its intention to indefinitely invest such earnings overseas to be utilized for working capital purposes, expansion of existing operations, possible acquisitions and other international items. No U.S. tax has been provided on such earnings. If they were remitted to the Company, applicable U.S. federal and foreign withholding taxes may be partially offset by available foreign tax credits. Management has concluded that it is impracticable to compute the full actual tax impact, but it estimates that $13.0 million of withholding taxes would be incurred if the $822.0 million were distributed. At December 31, 2016 , the Company had state operating loss and credit carryforwards of approximately $5.0 million , which begin to expire in 2019 ; federal research and development credit carryforwards of approximately $8.5 million , which begin to expire in 2033 ; federal foreign tax credit carryforward of approximately $8.8 million , which begin to expire in 2019 , and foreign operating loss carryforwards of $17.9 million , which begin to expire in 2017 . Benefits from tax positions should be recognized in the financial statements only when it is more likely than not that the tax positions will be sustained upon examination by the appropriate taxing authority that would have full knowledge of all relevant information. A tax position that meets the more-likely-than-not recognition threshold is measured at the largest amount of benefit that is greater than fifty percent likely of being realized upon ultimate settlement. Tax positions that fail to meet the more-likely-than-not recognition threshold should be recognized in the first subsequent financial reporting period in which that threshold is met. Previously recognized tax positions that no longer meet the more-likely-than-not recognition threshold should be derecognized in the first subsequent financial reporting period in which that threshold is no longer met. The provisions also provide guidance on the accounting for and disclosure of unrecognized tax benefits, interest and penalties. Reconciliations of the beginning and ending balances of the total amounts of gross unrecognized tax benefits for the years ended December 31, 2016 and 2015 are as follows: (In thousands) 2016 2015 Gross unrecognized tax benefits at beginning of year $ 7,621 $ 5,984 Increase in tax positions from prior years 14 — Decreases in tax positions for prior years — (51 ) Increases in tax positions for current year 1,944 2,067 Settlements — (194 ) Lapse in statute of limitations (1,286 ) (185 ) Gross unrecognized tax benefits at end of year $ 8,293 $ 7,621 The total amount of net unrecognized tax benefits that, if recognized, would affect the effective tax rate was $6.8 million at December 31, 2016 . Penalties and interest paid or received are recorded in other income, net, in the consolidated statements of operations. For the years ended December 31, 2016 and 2015 , the Company has accrued interest and penalties related to unrecognized tax benefits of $0.7 million and $0.6 million , respectively. Expenses (benefits) of $0.1 million , $0.1 million and $(0.4) million were recognized as interest and penalties in the consolidated statements of operations for the years ended December 31, 2016 , 2015 and 2014 , respectively. The Company files income tax returns in the U.S. and in various state, local and foreign jurisdictions. The statutes of limitations related to the consolidated Federal income tax return and state returns are closed for all years up to and including 2012 and 2012 , respectively. With respect to foreign jurisdictions, the statute of limitations varies from country to country, with the earliest open year for the Company’s major foreign subsidiaries being 2010 . Due to the expiration of various statutes of limitations, it is reasonably possible that the Company’s gross unrecognized tax benefit balance may decrease within the next twelve months by approximately $0.6 million .

Equity

Equity	12 Months Ended
	Dec. 31, 2016
Equity	EQUITY Share Repurchase Program On February 5, 2016, the Company's Board of Directors authorized a repurchase program covering up to an aggregate of $100.0 million of the Company's common stock in open market transactions and in accordance with one or more pre-arranged stock trading plans established in accordance with Rule 10b5-1 under the Securities and Exchange Act of 1934, as amended. Under the repurchase program, which expired February 15, 2017, the Company repurchased $7.6 million of shares for the year ended December 31, 2016. 2010 Stock Plan At December 31, 2009, the Company had outstanding stock awards under five stock incentive plans. On December 17, 2009, the Company’s Board of Directors approved the 2010 Stock Plan, subject to the approval of the Company’s stockholders. On May 5, 2010, the stockholders approved the 2010 Stock Plan. The 2010 Stock Plan replaced the predecessor plans for future stock awards and stock option grants. Subsequent to the acquisition of ATMI, the Company's Board of Directors approved the absorption of the ATMI, Inc. 2010 Stock Plan (ATMI Plan) into the Company's 2010 Stock Plan for the remainder of the term of the ATMI Plan. 5.7 million additional shares became available for grant by the Company upon absorption of the ATMI Plan. The 2010 Stock Plan provides for the issuance of stock options and other share-based awards to selected employees, directors, and other individuals or entities that provide services to the Company or its affiliates. The 2010 Stock Plan has a term of ten years. Under the 2010 Stock Plan, the Board of Directors or a committee selected by the Board of Directors will determine for each award, the term, price, number of shares, rate at which each award is exercisable and whether restrictions are imposed on the shares subject to the awards. The exercise price for option awards generally may not be less than the fair market value per share of the underlying common stock on the date granted. The 2010 Stock Plan allows that after December 31, 2009 any stock awards that were awarded from the expired plans mentioned above that are forfeited, expired or otherwise terminated without issuance of such stock award again be available for issuance under the 2010 Stock Plan. Stock Options Stock option activity for the 2010 Stock Plan and predecessor plans for the years ended December 31, 2016 , 2015 and 2014 is summarized as follows: 2016 2015 2014 (Shares in thousands) Number of shares Weighted average exercise price Number of shares Weighted average exercise price Number of shares Weighted average exercise price Options outstanding, beginning of year 2,139 $ 10.57 2,034 $ 9.67 1,961 $ 8.20 Granted 549 12.20 411 13.49 651 11.71 Exercised (633 ) 8.66 (219 ) 7.62 (546 ) 6.56 Expired or Forfeited (148 ) 12.32 (87 ) 10.72 (32 ) 14.06 Options outstanding, end of year 1,907 $ 11.54 2,139 $ 10.57 2,034 $ 9.67 Options exercisable, end of year 776 $ 10.65 961 $ 9.07 728 $ 7.92 Options outstanding for the Company’s stock plans at December 31, 2016 are summarized as follows: (Shares in thousands) Options outstanding Options exercisable Range of exercise prices Number outstanding Weighted average remaining life in years Weighted- average exercise price Number exercisable Weighted average exercise $5.40 to $9.88 540 2.6 years $ 9.51 429 $ 9.42 $11.71 to $11.71 527 4.0 years 11.71 260 11.71 $12.20 to $12.20 495 6.1 years 12.20 — — $13.49 to $13.49 345 5.0 years 13.49 87 13.49 1,907 4.4 years 11.54 776 10.65 The weighted average remaining contractual term for options outstanding and exercisable for all plans at December 31, 2016 was 4.4 years and 3.2 years, respectively. For all plans, the Company had shares available for future grants of 9.4 million shares, 10.4 million shares, and 11.6 million shares at December 31, 2016 , 2015 and 2014 , respectively. For all plans, the total pre-tax intrinsic value of stock options exercised during the years ended December 31, 2016 and 2015 was $5.1 million and $1.4 million , respectively. The aggregate intrinsic value, which represents the total pre-tax intrinsic value based on the Company’s closing stock price of $17.90 at December 31, 2016 , which theoretically could have been received by the option holders had all option holders exercised their options as of that date, was $12.1 million and $5.6 million for options outstanding and options exercisable, respectively. Share-based payment awards in the form of stock option awards for 0.5 million , 0.4 million and 0.7 million options were granted to employees during the years ended December 31, 2016 , 2015 and 2014 . Compensation expense is based on the grant date fair value. The awards vest annually over a three -year or four -year period and have a contractual term of 7 years. The Company estimates the fair value of stock options using the Black-Scholes valuation model. The Company estimates the fair value of stock options using the Black-Scholes valuation model. Key inputs and assumptions used to estimate the fair value of stock options include the grant price of the award, the expected option term, volatility of the Company’s stock, the risk-free rate and the Company’s dividend yield. Estimates of fair value are not intended to predict actual future events or the value ultimately realized by employees who receive equity awards, and subsequent events are not indicative of reasonableness of the original estimates of fair value made by the Company. The fair value of each stock option grant was estimated at the date of grant using a Black-Scholes option pricing model. The following table presents the weighted-average assumptions used in the valuation and the resulting weighted-average fair value per option granted for the years ended December 31, 2016 , 2015 and 2014 : Employee stock options: 2016 2015 2014 Volatility 27.6 % 34.6 % 43.3 % Risk-free interest rate 1.1 % 1.3 % 1.1 % Dividend yield — % — % — % Expected life (years) 4.0 3.9 3.8 Weighted average fair value per option $ 2.85 $ 3.86 $ 3.99 A historical daily measurement of volatility is determined based on the expected life of the option granted. The risk-free interest rate is determined by reference to the yield on an outstanding U.S. Treasury note with a term equal to the expected life of the option granted. Expected life is determined by reference to the Company’s historical experience. The Company determines the dividend yield by dividing the expected annual dividend on the Company’s stock by the option exercise price. Employee Stock Purchase Plan The Company maintains the Entegris, Inc. Amended and Restated Employee Stock Purchase Plan (ESPP). The ESPP allows employees to elect, at six-month intervals, to contribute up to 10% of their compensation, subject to certain limitations, to purchase shares of common stock at a discount of 15% from the fair market value on the first day or last day of each six-month period. The Company treats the ESPP as a compensatory plan. At December 31, 2016 , 2.3 million shares remained available for issuance under the ESPP. Employees purchased 0.3 million shares, 0.3 million shares, and 0.2 million shares, at a weighted-average price of $11.56 , $11.21 , and $10.57 during the years ended December 31, 2016 , 2015 and 2014 , respectively. The table below sets forth the amount of cash received by the Company from the exercise of stock options and employee contributions to the ESPP during the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Exercise of stock options and employee contributions to the ESPP $ 4,844 $ 4,049 $ 3,117 Restricted Stock Awards Restricted stock awards are awards of common stock made under the 2010 Stock Plan that are subject to a risk of forfeiture if the awardee terminates employment with the Company prior to the lapse of the restrictions. The value of such stock is determined using the market price on the grant date. Compensation expense for restricted stock awards is generally recognized using the straight-line single-option method. A summary of the Company’s restricted stock activity for the years ended December 31, 2016 , 2015 and 2014 is presented in the following table: 2016 2015 2014 (Shares in thousands) Number of shares Weighted average grant date fair value Number of shares Weighted average grant date fair value Number of shares Weighted average grant date fair value Unvested, beginning of year 1,882 $ 12.25 1,613 $ 10.53 1,570 $ 8.98 Granted 1,249 12.42 1,043 13.47 834 11.59 Vested (711 ) 11.74 (638 ) 10.13 (686 ) 8.32 Forfeited (256 ) 12.44 (136 ) 11.26 (105 ) 10.14 Unvested, end of year 2,164 12.49 1,882 12.25 1,613 10.53 The weighted average remaining contractual term for unvested restricted shares at December 31, 2016 and 2015 was 2.4 years and 2.3 years, respectively. During the years ended December 31, 2016 and 2015, Entegris, Inc. awarded performance stock for up to 0.2 million shares and 0.2 million shares, respectively, to be issued upon the achievement of performance conditions (Performance shares) under the Company’s 2010 Stock Plan to certain officers and other key employees. Compensation expense is based on the grant date fair value. The awards vest on the third anniversary of the award date. The Company estimates the fair value of the Performance shares using a Monte Carlo simulation process. As of December 31, 2016 , the total compensation cost related to unvested stock options and restricted stock awards not yet recognized was $2.8 million and $21.4 million , respectively, and is expected to be recognized over the next 2.5 years on a weighted-average basis. Valuation and Expense Information The Company recognizes compensation expense for all share-based payment awards made to employees and directors based on their estimated fair values on the date of grant. Share-based compensation expense is based on the value of the portion of share-based payment awards that is ultimately expected to vest during the period. The following table summarizes the allocation of share-based compensation expense related to employee stock options, restricted stock awards and grants under the employee stock purchase plan for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Cost of sales $ 1,579 $ 1,317 $ 809 Engineering, research and development expenses 1,124 1,000 705 Selling, general and administrative expenses 10,733 8,716 7,373 Share-based compensation expense 13,436 11,033 8,887 Tax benefit 4,153 3,362 2,746 Share-based compensation expense, net of tax $ 9,283 $ 7,671 $ 6,141

Benefit Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2016
Benefit Plans	BENEFIT PLANS 401(k) Plan The Company maintains the Entegris, Inc. 401(k) Savings and Profit Sharing Plan (the 401(k) Plan) that qualifies as a deferred salary arrangement under Section 401(k) of the Internal Revenue Code. Under the Plan, eligible employees may defer a portion of their pre-tax wages, up to the Internal Revenue Service annual contribution limit. Entegris matches employees’ contributions to a maximum match of 4% of the employee’s eligible wages. The employer matching contribution expense under the Plan was $4.9 million , $5.0 million and $4.4 million in the fiscal years ended December 31, 2016 , 2015 and 2014 , respectively. Defined Benefit Plans The employees of the Company’s subsidiaries in Japan, Taiwan and Germany are covered in defined benefit pension plans. The Company uses a December 31 measurement date for its pension plans. The tables below set forth the Company’s estimated funded status as of December 31, 2016 and 2015 : (In thousands) 2016 2015 Change in benefit obligation: Benefit obligation at beginning of year $ 8,194 $ 8,482 Service cost 66 65 Interest cost 91 119 Actuarial (gain) loss (481 ) 15 Benefits paid (1,000 ) (1,165 ) Curtailments — (536 ) Other — 1,412 Foreign exchange impact 203 (198 ) Benefit obligation at end of year 7,073 8,194 Change in plan assets: Fair value of plan assets at beginning of year 718 380 Return on plan assets 7 19 Employer contributions 6 14 Acquisition — 331 Foreign exchange impact 12 (26 ) Fair value of plan assets at end of year 743 718 Funded status: Plan assets less than benefit obligation - Net amount recognized $ (6,330 ) $ (7,476 ) The curtailments noted above relate to revisions associated with the early termination of personnel in Taiwan. Amounts recognized in the consolidated balance sheets consist of: (In thousands) 2016 2015 Noncurrent liability $ (6,330 ) $ (7,476 ) Accumulated other comprehensive loss, net of taxes 681 1,149 Amounts recognized in accumulated other comprehensive loss, net of tax consist of: (In thousands) 2016 2015 Net actuarial loss $ 170 $ 435 Prior service cost 712 998 Gross amount recognized 882 1,433 Deferred income taxes (201 ) (284 ) Net amount recognized $ 681 $ 1,149 Information for pension plans with an accumulated benefit obligation in excess of plan assets: (In thousands) 2016 2015 Projected benefit obligation $ 7,073 $ 8,194 Accumulated benefit obligation 6,145 6,948 Fair value of plan assets 743 718 The components of the net periodic benefit cost for the years ended December 31, 2016 , 2015 and 2014 were as follows: (In thousands) 2016 2015 2014 Pension benefits: Service cost $ 66 $ 65 $ 64 Interest cost 91 119 111 Expected return on plan assets (10 ) (17 ) (8 ) Amortization of prior service cost 65 76 18 Amortization of net transition obligation — (1 ) (1 ) Amortization of plan loss — 28 22 Recognized actuarial net loss 17 14 7 Curtailments — 160 — Net periodic pension benefit cost $ 229 $ 444 $ 213 The estimated amount that will be amortized from accumulated other comprehensive income into net periodic benefit cost in 2017 is as follows: (In thousands) Prior service cost $ 64 Net actuarial loss 21 $ 85 Assumptions used in determining the benefit obligation and net periodic benefit cost for the Company’s pension plans for the years ended December 31, 2016 , 2015 and 2014 are presented in the following table as weighted-averages: 2016 2015 2014 Benefit obligations: Discount rate 0.63 % 1.10 % 1.13 % Rate of compensation increase 2.90 % 3.70 % 4.41 % Net periodic benefit cost: Discount rate 1.70 % 1.94 % 1.83 % Rate of compensation increase 3.43 % 4.41 % 3.38 % Expected return on plan assets 1.43 % 1.76 % 1.35 % The plans’ expected return on assets as shown above is based on management’s expectations of long-term average rates of return to be achieved by the underlying investment portfolios. In establishing this assumption, management considers historical and expected returns for the asset classes in which the plans are invested, as well as current economic and capital market conditions. The discount rate primarily used by the Company is based on market yields at the valuation date on government bonds as well as the estimated maturity of benefit payments. Plan Assets At December 31, 2016 and 2015 , the Company’s pension plan assets are deposited in Bank of Taiwan in the form of money market funds, where the Bank of Taiwan is the assigned funding vehicle for the statutory retirement benefit. The fair value measurements of the Company’s pension plan assets at December 31, 2016 , by asset category are as follows: (In thousands) Quoted prices in active markets for identical assets Significant observable inputs Significant unobservable inputs Asset category Total (Level 1) (Level 2) (Level 3) Taiwan plan assets (a) $ 743 $ 743 — — (a) This category includes investments in the government of Taiwan’s pension fund. The government of Taiwan is responsible for the strategy and allocation of the investment contributions. The fair value measurements of the Company’s pension plan assets at December 31, 2015 , by asset category are as follows: (In thousands) Quoted prices in active markets for identical assets Significant observable inputs Significant unobservable inputs Asset category Total (Level 1) (Level 2) (Level 3) Taiwan plan assets (a) $ 718 $ 718 — — (a) This category includes investments in the government of Taiwan’s pension fund. The government of Taiwan is responsible for the strategy and allocation of the investment contributions. Cash Flows The Company expects to make the following contributions and benefit payments: (In thousands) Contributions Payments 2017 $ 4 $ 65 2018 — 106 2019 — 145 2020 — 187 2021 — 736 Years 2022-2026 — 2,082

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2016
Fair Value Measurements	FAIR VALUE MEASUREMENTS Generally accepted accounting principles establish a fair value hierarchy that prioritizes the inputs used to measure fair value. The three levels of the fair value hierarchy are as follows: Level 1—Quoted prices in active markets accessible at the reporting date for identical assets and liabilities. Level 2—Quoted prices for similar assets or liabilities in active markets. Quoted prices for identical or similar assets and liabilities in markets that are not considered active or financial instruments for which all significant inputs are observable, either directly or indirectly. Level 3—Prices or valuations that require inputs that are significant to the valuation and are unobservable. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Financial Assets Measured at Fair Value on a Recurring Basis The following table presents the Company’s financial assets and liabilities that are measured at fair value on a recurring basis at December 31, 2016 and 2015 . December 31, 2016 December 31, 2015 (In thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Short-term investments: Common stock — — — — $ 2,181 — — $ 2,181 Other current assets: Foreign exchange forward contracts asset $ — $ 4,784 $ — $ 4,784 $ — $ 2,463 $ — $ 2,463 Total assets measured and recorded at fair value $ — $ 4,784 $ — $ 4,784 $ 2,181 $ 2,463 $ — $ 4,644 The following table provides information about derivative positions held by the Company as of December 31, 2016 and 2015 : December 31, 2016 December 31, 2015 (In thousands) Gross Gross Net amount Gross Gross Net amount of assets in the Foreign exchange forward contracts $4,784 $0 $4,784 $2,958 $495 $2,463 Gains and losses associated with derivatives are recorded in other expense (income), net, in the consolidated statements of operations. Losses associated with derivative instruments not designated as hedging instruments for the years ended December 31, 2016 and 2015 were as follows: (In thousands) 2016 2015 Losses on foreign currency forward contracts $(1,647) $(10,787) In the years ended December 31, 2015 and 2014, the Company recorded an other-than-temporary impairment of $0.5 million and $1.9 million , respectively, related to an available-for-sale common stock investment classified in short-term investments in the consolidated balance sheet. The fair value of the investment after impairment was $2.2 million and $4.6 million at December 31, 2015 and 2014, respectively, and is classified as a Level 1 investment in the fair value hierarchy. The fair value measurement of the common stock investment was based on a quoted market price in an active market. The Company determined that it was an other-than-temporary impairment due to the significant decline in fair value compared to the acquisition cost for an extended period of time and the financial condition of the issuer.

Earning Per Share (EPS)

Earning Per Share (EPS)	12 Months Ended
	Dec. 31, 2016
Earning Per Share (EPS)	EARNINGS PER SHARE (EPS) Basic EPS is computed by dividing net income by the weighted average number of shares of common stock outstanding during each period. The following table presents a reconciliation of the share amounts used in the computation of basic and diluted earnings per share: (In thousands) 2016 2015 2014 Basic earnings per share—Weighted common shares outstanding 141,093 140,353 139,311 Weighted common shares assumed upon exercise of options and vesting of restricted stock units 957 768 751 Diluted earnings per share—Weighted common shares outstanding 142,050 141,121 140,062 The Company excluded the following shares underlying stock-based awards from the calculations of diluted EPS because their inclusion would have been anti-dilutive for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Shares excluded from calculations of diluted EPS 434 998 1,183

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2016
Segment Information	SEGMENT INFORMATION In 2016, the Company has changed its financial segment reporting, reflecting an organizational realignment intended to better leverage its unique portfolio of capabilities to create value for its customers by developing mission-critical solutions to maximize manufacturing yields and enable higher performance of devices. While these segments have separate products and technical know-how, they share a single, global sales force, unified core systems and processes, global technology centers, strategic and technology roadmaps, and a focus on a common set of customers. The Company leverages its expertise from these three segments to create new and increasingly integrated solutions for its customers. The Company's business is reported in the following segments: • Specialty Chemicals and Engineered Materials (SCEM): SCEM provides high-performance and high-purity process chemistries, gases, and materials and safe and efficient delivery systems to support semiconductor and other advanced manufacturing processes. • Advanced Materials Handling (AMH): AMH develops solutions to monitor, protect, transport, and deliver critical liquid chemistries and substrates for a broad set of applications in the semiconductor industry and other high-technology industries. • Microcontamination Control (MC): MC solutions purify critical liquid chemistries and gases used in semiconductor manufacturing processes and other high-technology industries. Inter-segment sales are not significant. Segment profit is defined as net sales less direct segment operating expenses, excluding certain unallocated expenses, consisting mainly of general and administrative costs for the Company’s human resources, finance and information technology functions as well as interest expense, amortization of intangible assets, charges for the fair value write-up of acquired inventory sold, contingent consideration fair value adjustments, income taxes and equity in net loss of affiliate. Corporate assets consist primarily of cash and cash equivalents, short-term investments, investments, deferred tax assets and deferred tax charges. Summarized financial information for the Company’s reportable segments is shown in the following tables. (In thousands) 2016 2015 2014 Net sales: SCEM $ 428,328 $ 418,878 $ 292,339 AMH 384,284 346,426 346,571 MC 362,658 315,817 323,159 Total net sales $ 1,175,270 $ 1,081,121 $ 962,069 ( In thousands ) 2016 2015 2014 Segment profit: SCEM $ 96,060 $ 100,370 $ 59,017 AMH 73,452 66,419 70,464 MC 110,042 83,076 99,019 Total segment profit $ 279,554 $ 249,865 $ 228,500 ( In thousands ) 2016 2015 2014 Total assets: SCEM $ 766,126 $ 801,250 $ 807,544 AMH 267,085 259,377 288,680 MC 200,399 183,518 195,457 Corporate 465,922 402,552 456,626 Total assets $ 1,699,532 $ 1,646,697 $ 1,748,307 (In thousands) 2016 2015 2014 Depreciation and amortization: SCEM $ 64,062 $ 65,352 $ 51,046 AMH 22,874 23,604 23,099 MC 9,222 8,733 4,982 Corporate 3,728 3,965 4,577 Total depreciation and amortization $ 99,886 $ 101,654 $ 83,704 (In thousands) 2016 2015 2014 Capital expenditures: SCEM $ 27,348 $ 29,333 $ 18,960 AMH 19,029 23,617 13,539 MC 6,281 11,408 11,243 Corporate 12,602 7,619 13,991 Total capital expenditures $ 65,260 $ 71,977 $ 57,733 The following table reconciles total segment profit to income before income taxes and equity in net loss of affiliate: (In thousands) 2016 2015 2014 Total segment profit $ 279,554 $ 249,865 $ 228,500 Less: Charge for fair value write-up of acquired inventory sold — — 48,586 Amortization of intangibles 44,263 47,349 37,067 Contingent consideration fair value adjustment — — (1,282 ) Unallocated general and administrative expenses 79,755 84,448 122,775 Operating income 155,536 118,068 21,354 Interest expense 36,846 38,667 33,355 Interest income (318 ) (429 ) (1,336 ) Other (income) expense, net (991 ) (12,355 ) 2,727 Income (loss) before income tax expense (benefit) and equity in net loss of affiliate $ 119,999 $ 92,185 $ (13,392 ) The following table presents amortization of intangibles for each of the Company’s segments for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Amortization of intangibles: SCEM $ 40,034 $ 42,909 $ 32,099 AMH 4,229 4,440 4,968 Total amortization of intangibles $ 44,263 $ 47,349 $ 37,067 The following table summarizes total net sales, based upon the country or region to which sales to external customers were made for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Net sales: United States $ 253,868 $ 253,141 $ 240,767 Japan 156,021 131,336 121,878 Europe 105,779 106,036 108,889 Taiwan 291,309 248,842 230,416 Singapore 65,133 55,409 46,048 South Korea 145,661 148,016 122,322 China 118,435 97,148 73,281 Other 39,064 41,193 18,468 $ 1,175,270 $ 1,081,121 $ 962,069 The following table summarizes property, plant and equipment, net, attributed to significant countries for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Property, plant and equipment: United States $ 226,394 $ 229,558 $ 222,125 Korea 33,441 32,400 32,163 Japan 25,248 23,619 22,261 Malaysia 19,180 19,878 20,607 Other 17,299 15,846 16,413 $ 321,562 $ 321,301 $ 313,569 In the years ended December 31, 2016 , 2015 and 2014 , one individual customer, Taiwan Semiconductor Manufacturing Company Limited, accounted for $161.9 million , $134.1 million and $130.9 million of net sales, respectively, all of which include sales from all of the Company's segments.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
	Dec. 31, 2016
Commitments and Contingent Liabilities	COMMITMENTS AND CONTINGENT LIABILITIES The Company is subject to various claims, legal actions, and complaints arising in the ordinary course of business. The Company believes the final outcome of these matters will not have a material adverse effect on its consolidated financial statements. The Company expenses legal costs as incurred.

Quarterly Information-Unaudited

Quarterly Information-Unaudited	12 Months Ended
	Dec. 31, 2016
Quarterly Information-Unaudited	QUARTERLY INFORMATION-UNAUDITED Fiscal quarter ended (In thousands, except per share data) April 2, 2016 July 2, 2016 October 1, 2016 December 31, 2016 Net sales $ 267,024 $ 303,052 $ 296,692 $ 308,502 Gross profit 114,706 139,205 122,980 131,800 Net income 16,212 32,890 21,947 26,098 Basic net income per common share 0.12 0.23 0.16 0.18 Diluted net income per common share 0.11 0.23 0.15 0.18 Fiscal quarter ended (In thousands, except per share data) March 28, 2015 June 27, 2015 September 26, 2015 December 31, 2015 Net sales $ 263,373 $ 280,709 $ 270,253 $ 266,786 Gross profit 116,536 128,087 116,310 109,298 Net income 14,872 24,448 23,403 17,573 Basic net income per common share 0.11 0.17 0.17 0.13 Diluted net income per common share 0.11 0.17 0.17 0.12

Subsequent Event Subsequent Eve

Subsequent Event Subsequent Event	12 Months Ended
	Dec. 31, 2016
Subsequent Event [Line Items]
Subsequent Events [Text Block]	SUBSEQUENT EVENT On February 15, 2017, the Company’s Board of Directors authorized a repurchase program covering up to an aggregate of $100 million of the Company’s common stock in open market transactions and in accordance with one or more pre-arranged stock trading plans to be established in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended. The authorization expires February 15, 2018.

Summary of Significant Accoun27

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Nature of Operations	Nature of Operations Entegris, Inc. (Entegris or the Company) is a leading global developer, manufacturer and supplier of microfiltration control products, specialty chemicals and advanced materials handling solutions for manufacturing processes in the semiconductor and other high-technology industries.
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts of the Company and its majority-owned subsidiaries. Intercompany profits, transactions and balances have been eliminated in consolidation.
Use of Estimates	Use of Estimates and Basis of Presentation The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make judgments, estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. On an ongoing basis, Entegris evaluates its estimates, including those related to receivables, inventories, property, plant and equipment, intangible assets, accrued liabilities, income taxes and share-based compensation, among others. Actual results could differ from those estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include cash on hand and highly liquid debt securities with original maturities of three months or less, which are valued at cost and approximates fair value.
Allowance For Doubtful Accounts	Allowance for Doubtful Accounts An allowance for uncollectible trade receivables is estimated based on a combination of write-off history, aging analysis and any specific, known troubled accounts. The Company maintains an allowance for doubtful accounts that management believes is adequate to cover expected losses on trade receivables.
Inventories	Inventories Inventories are stated at the lower of cost or market. Cost is determined by the first-in, first-out (FIFO) method.
Property, Plant, And Equipment	Property, Plant, and Equipment Property, plant and equipment are carried at cost and are depreciated on the straight-line method over the estimated useful lives of the assets. When assets are retired or disposed of, the cost and related accumulated depreciation are removed from the accounts, and gains or losses are recognized in the same period. Maintenance and repairs are expensed as incurred, while significant additions and improvements are capitalized. Long-lived assets, including property, plant and equipment, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or group of assets may not be recoverable based on estimated future undiscounted cash flows. The amount of impairment, if any, is measured as the difference between the net book value and the estimated fair value of the asset(s).
Investments	Investments The Company’s nonmarketable investments are accounted for under either the cost or equity method of accounting, as appropriate. All nonmarketable investments are periodically reviewed to determine whether declines, if any, in fair value below cost basis are other-than-temporary. If the decline in fair value is determined to be other-than-temporary, an impairment loss is recorded and the investment is written down to a new cost basis.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The carrying value of cash equivalents, accounts receivable, accounts payable, accrued payroll and related benefits, and other accrued liabilities approximates fair value due to the short maturity of those instruments.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill represents the excess of acquisition costs over the fair value of the net assets of businesses acquired. Goodwill is not subject to amortization, but is tested for impairment annually at August 31, the Company's annual testing date, and whenever events or changes in circumstances indicate that impairment may have occurred. The Company compares the carrying value of its reporting units, including goodwill, to their fair value. For reporting units in which the assessment indicates that it is more likely than not that the fair value is more than its carrying value, goodwill is not considered impaired. If the carrying value of the reporting unit exceeds fair value, goodwill is considered impaired. Based on its annual analysis, the Company determined there was no indication of impairment of goodwill. In the fourth quarter of 2016, the Company changed its financial segment reporting as described in note 15. The Company performed additional analysis in connection with this organizational revision, which included changes to its reporting unit structure. Based on this assessment, there was no indication of impairment of goodwill and the estimated fair value of each reporting unit substantially exceeded its carrying value. Amortizable intangible assets include, among other items, patented, unpatented and other developed technology and customer-based intangibles, and are amortized using the straight-line method over their respective estimated useful lives of 3 to 15 years. The Company reviews intangible assets, along with other long-lived assets - primarily property, plant and equipment - for impairment if changes in circumstances or the occurrence of events suggest the remaining value may not be recoverable.
Derivative Financial Instruments	Derivative Financial Instruments The Company records derivatives as assets or liabilities on the balance sheet and measures such instruments at fair value. Changes in fair value of derivatives are recorded each period in the Company’s consolidated statements of operations. The Company periodically enters into forward foreign currency contracts to reduce exposures relating to rate changes in certain foreign currencies. Certain exposures to credit losses related to counterparty nonperformance exist. However, the Company does not anticipate nonperformance by the counterparties since they are large, well-established financial institutions. None of these derivatives is accounted for as a hedge transaction. Accordingly, changes in the fair value of forward foreign currency contracts are recorded as other (income) expense, net, in the Company’s consolidated statements of operations. The fair values of the Company’s derivative financial instruments are based on prices quoted by financial institutions for these instruments.
Foreign Currency Translation	Foreign Currency Translation Assets and liabilities of certain foreign subsidiaries are translated from foreign currencies into U.S. dollars at period-end exchange rates, and the resulting gains and losses arising from translation of net assets located outside the U.S. are recorded as a cumulative translation adjustment, a component of accumulated other comprehensive loss in the consolidated balance sheets. Income statement amounts are translated at the weighted average exchange rates for the year. Translation adjustments are not adjusted for income taxes, as substantially all translation adjustments relate to permanent investments in non-U.S. subsidiaries. Gains and losses resulting from foreign currency transactions are included in other(income) expense, net, in the Company's consolidated statements of operations.
Revenue Recognition	Revenue Recognition Revenue and the related cost of sales are generally recognized upon shipment of the products. Revenue for product sales is recognized upon delivery, when persuasive evidence of an arrangement exists, when title and risk of loss have been transferred to the customer, collectability is reasonably assured, and pricing is fixed or determinable. Shipping and handling fees related to sales transactions are billed to customers and are recorded as revenue. The Company sells its products throughout the world primarily to companies in the microelectronics industry. The Company performs continuing credit evaluations of its customers and generally does not require collateral. Letters of credit may be required from its customers in certain circumstances. The Company provides for estimated returns based on historical and current trends in both sales and product returns. The Company collects various sales and value-added taxes on certain product and service sales that are accounted for on a net basis.
Shipping and Handling Costs	Shipping and Handling Costs Shipping and handling costs incurred are recorded in cost of sales in the Company's consolidated statements of operations.
Engineering,Research and Development Expenses	Engineering, Research and Development Expenses Engineering, research and development costs are expensed as incurred.
Share-Based Compensation	Share-based Compensation The Company measures the cost of employee services received in exchange for the award of equity instruments based on the fair value of the award at the date of grant. Compensation expense is based on the grant date fair value. The cost is recognized using the straight-line attribution method to recognize share-based compensation over the service period of the award. Because share-based compensation expense recognized in the Company's consolidated statements of operations is based on awards ultimately expected to vest, it has been reduced for expected forfeitures, which are estimated at the time of grant with such estimates revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates.
Income Taxes	Income Taxes The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income tax expense in the period that includes the enactment date. The Company recognizes deferred tax assets to the extent that it believes these assets are more likely than not to be realized. A valuation allowance is recorded to reduce deferred tax assets when it is more likely than not that the Company would not be able to realize all or part of its deferred tax assets. In making such a determination, the Company considers all available positive and negative evidence, including future reversals of existing temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If the Company determines that it would be able to realize its deferred tax assets in the future in excess of their net recorded amount, the Company would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes. The Company’s policy for recording interest and penalties associated with audits and unrecognized tax benefits is to record such items as a component of income before taxes. Penalties and interest to be paid or received are recorded in other expense (income), net, in the statement of operations.
Comprehensive Income (Loss)	Comprehensive Income (Loss) Comprehensive income (loss) represents the change in equity resulting from items other than shareholder investments and distributions. The Company’s foreign currency translation adjustments, unrealized gains and losses on available-for-sale investments, and minimum pension liability adjustments are included in accumulated other comprehensive loss. Comprehensive income (loss) and the components of accumulated other comprehensive loss are presented in the accompanying consolidated statements of comprehensive income (loss) and consolidated statements of equity.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Adopted in 2016 In April 2015, the Financial Standards Accounting Board (FASB) issued Accounting Standards Update (ASU) No. 2015-03, Simplifying the Presentation of Debt Issuance Costs (ASU No. 2015-03) which requires an entity to present debt issuance costs as a direct deduction from the carrying amount of the related debt liability on the balance sheet. The update requires retrospective application and represents a change in accounting principle. The update became effective January 1, 2016. Based on the balances as of December 31, 2015, in accordance with ASU No. 2015-03, the Company reclassified $11.2 million of unamortized debt issuance costs from other current assets and other noncurrent assets to long-term debt. Recent Accounting Pronouncements Yet to be Adopted In May 2014, the Financial Standards Accounting Board (FASB) issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) (ASU No. 2014-09). ASU No. 2014-09 outlines a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This new revenue recognition model provides a five-step analysis in determining when and how revenue is recognized. As such, revenue for its contracts will generally be recognized as control transfers to the customer, which is consistent with the revenue recognition model currently used for the majority of the Company's contracts. ASU No. 2014-09 may be applied either retrospectively or through the use of a modified-retrospective method. ASU No. 2014-09 also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers. ASU No. 2014-09 is effective for the Company beginning January 1, 2018. The Company is currently assessing the impact that adopting this new accounting guidance will have on its consolidated financial statements and disclosures. To assist in this assessment, and to oversee the eventual adoption of ASU No. 2014-09, the Company has established a cross-functional steering committee. The initial analysis of identifying revenue streams and potential impacts of the new guidance is substantially complete, and the Company is now analyzing the potential magnitude to the consolidated financial statements and related disclosures. Based on its preliminary evaluation of ASU No. 2014-09, the Company does not currently expect it to have a material impact on its results of operations or cash flows in the periods after adoption. The Company has not yet selected a transition approach. The Company expects to complete its assessment of the cumulative effect of adopting ASU No. 2014-09 as well as the selection of a transition approach during the first half of 2017. The evaluation of ASU No. 2014-09 will continue through the date of adoption. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) . ASU No. 2016-02 requires the identification of arrangements that should be accounted for as leases by lessees. In general, for lease arrangements exceeding a twelve-month term, these arrangements must now be recognized as assets and liabilities on the balance sheet of the lessee. Under ASU No. 2016-02, a right-of-use asset and lease obligation will be recorded for all leases, whether operating or financing, while the income statement will reflect lease expense for operating leases, and amortization and interest expense for financing leases. The balance sheet amount recorded for existing leases at the date of adoption of ASU No. 2016-02 must be calculated using the applicable incremental borrowing rate at the date of adoption. In addition, ASU No. 2016-02 requires the use of the modified retrospective method, which will require adjustment to all comparative periods presented in the consolidated financial statements. ASU No. 2016-02 is effective beginning January 1, 2019. The Company is currently assessing the impact that adopting this new accounting standard will have on its consolidated financial statements and disclosures, and the timing of adoption. In April 2016, the FASB issued ASU No. 2016-09, Compensation-Stock Compensation (Topic 718) , which simplifies several aspects of the accounting for employee share-based payment transactions, including the accounting for tax effects related to share-based payments, forfeitures, and statutory tax withholding requirements, and the classification of tax-related cash flows in the statement of cash flows. ASU No. 2016-09 is effective for the Company beginning January 1, 2017. The Company's current assessment of the pronouncement indicates that the impact upon adoption will not be material to its consolidated financial statements and and related disclosures.

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2016
Acquisitions [Abstract]
Schedule of Acquisition Purchase Price [Table Text Block]	The purchase price of ATMI consisted of the following: (In thousands): Cash paid to ATMI shareholders $ 1,099,033 Cash paid in settlement of share-based compensation awards 31,451 Total purchase price 1,130,484 Less cash and cash equivalents acquired 321,094 Total purchase price, net of cash acquired $ 809,390
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	The following table summarizes the allocation of the purchase price to the fair values assigned to the assets acquired and liabilities assumed at the date of the ATMI acquisition: (In thousands): Accounts receivable and other current assets $ 109,965 Inventory 114,200 Property, plant and equipment 124,025 Identifiable intangible assets 297,040 Other noncurrent assets 8,503 Current liabilities (60,943 ) Deferred tax liabilities and other noncurrent liabilities (124,929 ) Net assets acquired 467,861 Goodwill 341,529 Total purchase price, net of cash acquired $ 809,390
Acquisition, Pro Forma Information [Table Text Block]	The following unaudited pro forma financial information presents the combined results of operations of the Company as if the acquisition of ATMI had occurred as of the beginning of the years presented. The unaudited pro forma financial information is not necessarily indicative of what the Company’s consolidated results of operations actually would have been had the acquisition occurred at the beginning of each year. In addition, the unaudited pro forma financial information does not attempt to project the future results of operations of the combined company. Year ended (In thousands, except per share data) (Unaudited) December 31, 2014 Net sales $ 1,076,334 Net income 68,279 Per share amounts: Net income per common share - basic $ 0.49 Net income per common share - diluted 0.49

Trade Accounts and Notes Rece29

Trade Accounts and Notes Receivable (Tables)	12 Months Ended
	Dec. 31, 2016
Trade Accounts and Notes Receivable	Trade accounts and notes receivable from customers at December 31, 2016 and 2015 consist of the following: (In thousands) 2016 2015 Accounts receivable $ 163,759 $ 138,473 Notes receivable 4,390 4,254 168,149 142,727 Less allowance for doubtful accounts 2,474 1,318 $ 165,675 $ 141,409

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2016
Inventories	Inventories at December 31, 2016 and 2015 consist of the following: (In thousands) 2016 2015 Raw materials $ 53,109 $ 51,063 Work-in-process 15,976 11,644 Finished goods (a) 114,444 110,469 $ 183,529 $ 173,176 (a) Includes consignment inventories held by customers for $16.4 million and $16.1 million at December 31, 2016 and 2015 , respectively.

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment	Property, plant, and equipment at December 31, 2016 and 2015 consists of the following: (In thousands) 2016 2015 Estimated useful lives in years Land $ 15,903 $ 14,630 Buildings and improvements 155,769 155,337 5-35 Manufacturing equipment 248,201 233,473 5-10 Canisters and cylinders 65,100 54,263 3-12 Molds 76,782 82,019 3-5 Office furniture and equipment 107,194 98,291 3-8 Construction in progress 40,136 25,128 709,085 663,141 Less accumulated depreciation 387,523 341,840 $ 321,562 $ 321,301
Depreciation Expense	The table below sets forth the depreciation expense for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Depreciation expense $ 55,623 $ 54,305 $ 46,637

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Schedule of Goodwill [Table Text Block]	Goodwill activity for each of the Company's two reportable segments that carry goodwill, Specialty Chemicals and Engineered Materials (SCEM) and Advanced Materials Handling (AMH), for the years ended December 31, 2016 and 2015 is shown below: (In thousands) SCEM AMH Total December 31, 2014 $ 293,260 $ 47,483 $ 340,743 Addition due to purchase accounting adjustments 4,972 — 4,972 Other, including foreign currency translation (3,532 ) (72 ) (3,604 ) December 31, 2015 294,700 47,411 342,111 Addition due to purchase accounting adjustments 4,434 — 4,434 Other, including foreign currency translation (1,276 ) — (1,276 ) December 31, 2016 $ 297,858 $ 47,411 $ 345,269
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]	Identifiable intangible assets at December 31, 2016 and 2015 consist of the following: 2016 (In thousands) Gross carrying Amount Accumulated amortization Net carrying value Weighted average life in years Developed technology 202,591 126,077 76,514 6.7 Trademarks and trade names 16,661 12,617 4,044 9.9 Customer relationships 216,918 90,581 126,337 10.3 Other 18,585 7,932 10,653 6.5 $ 454,755 $ 237,207 $ 217,548 8.5 2015 (In thousands) Gross carrying amount Accumulated amortization Net carrying value Weighted average life in years Developed technology 202,732 102,883 99,849 6.7 Trademarks and trade names 16,676 10,681 5,995 9.9 Customer relationships 218,283 72,948 145,335 10.3 Other 15,135 7,372 7,763 5.7 $ 452,826 $ 193,884 $ 258,942 8.5
Estimated Future Amortization Expense	The amortization expense for each of the five succeeding years and thereafter relating to intangible assets currently recorded in the Company's consolidated balance sheets is estimated to be the following at December 31, 2016 : Fiscal year ending December 31 (In thousands) 2017 $ 43,101 2018 42,721 2019 40,480 2020 25,694 2021 18,951 Thereafter 46,601 $ 217,548
Schedule Of Amortization Of Intangibles Table [Text Block]	The table below sets forth the amortization expense for the years ended December 31, 2016 , 2015 , and 2014 : (In thousands) 2016 2015 2014 Amortization expense $ 44,263 $ 47,349 $ 37,067 The following table presents amortization of intangibles for each of the Company’s segments for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Amortization of intangibles: SCEM $ 40,034 $ 42,909 $ 32,099 AMH 4,229 4,440 4,968 Total amortization of intangibles $ 44,263 $ 47,349 $ 37,067

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2016
Debt [Abstract]
Schedule of Debt [Table Text Block]	Long-term debt at December 31, 2016 and 2015 consists of the following: (In thousands) December 31, 2016 December 31, 2015 Senior secured term loan facility due 2021 $ 233,850 $ 308,850 Senior unsecured notes due 2022 360,000 360,000 593,850 668,850 Unamortized discount and debt issuance costs 9,173 12,806 Total long-term debt 584,677 656,044 Less current maturities of long-term debt 100,000 50,000 Long-term debt less current maturities $ 484,677 $ 606,044
Schedule of Maturities of Long-term Debt [Table Text Block]	Annual maturities of long-term debt contractually due as of December 31, 2016 are as follows: Fiscal year ending December 31 (In thousands) 2017 $ — 2018 — 2019 — 2020 — 2021 233,850 Thereafter 360,000 $ 593,850

Lease Commitments (Tables)

Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2016
Future Minimum Lease Payments	As of December 31, 2016 , the Company was obligated under noncancellable operating lease agreements for certain sales offices and manufacturing facilities, manufacturing equipment, vehicles, information technology equipment and warehouse space. Future minimum lease payments for noncancellable operating leases with initial or remaining terms in excess of one year are as follows: Fiscal year ending December 31 (In thousands) 2017 $ 9,837 2018 7,356 2019 5,635 2020 4,220 2021 3,860 Thereafter 14,090 Total minimum lease payments $ 44,998

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	12 Months Ended
	Dec. 31, 2016
Asset Retirement Obligation [Abstract]
Schedule of Asset Retirement Obligations [Table Text Block]	Changes in the carrying amounts of the Company’s AROs for the years ended December 31, 2016 and 2015 are shown below: (In thousands) 2016 2015 Balance at beginning of year $ 11,334 $ 9,950 Liabilities assumed in ATMI acquisition — 589 Liabilities settled (975 ) (698 ) Liabilities incurred 491 1,094 Accretion expense 188 196 Revision of estimate 491 203 Balance at end of year $ 11,529 $ 11,334

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income (Loss) Before Income Taxes	Income (loss) before income taxes for the years ended December 31, 2016 , 2015 and 2014 was derived from the following sources: (In thousands) 2016 2015 2014 Domestic $ (7,328 ) $ (16,751 ) $ (118,917 ) Foreign 127,327 108,936 105,525 Income (loss) before income tax expense (benefit) and equity in net loss of affiliates $ 119,999 $ 92,185 $ (13,392 )
Components of Income Tax (Benefit) Expense	Income tax expense (benefit) for the years ended December 31, 2016 , 2015 and 2014 is summarized as follows: (In thousands) 2016 2015 2014 Current: Federal $ 7,759 $ 4,170 $ 1,574 State (10 ) 528 111 Foreign 31,387 18,817 21,459 39,136 23,515 23,144 Deferred (net of valuation allowance): Federal (8,183 ) (11,374 ) (41,484 ) State 250 (738 ) (1,545 ) Foreign (8,351 ) (1,201 ) (1,687 ) (16,284 ) (13,313 ) (44,716 ) Income tax expense (benefit) $ 22,852 $ 10,202 $ (21,572 )
Reconciliation of Income Tax Expense With Expected Amounts Based Upon Statutory Federal Tax Rates	Income tax (benefit) expense differs from the expected amounts based upon the statutory federal tax rates for the years ended December 31, 2016 , 2015 and 2014 as follows: (In thousands) 2016 2015 2014 Expected federal income tax at statutory rate $ 42,000 $ 32,265 $ (4,687 ) State income taxes before valuation allowance, net of federal tax effect (769 ) (576 ) (2,115 ) Effect of foreign source income (22,242 ) (23,374 ) (19,996 ) Tax contingencies 1,103 1,483 1,379 Valuation allowance 1,713 1,109 2,106 Non-deductible acquisition costs — 363 2,176 U.S. federal research credit (1,676 ) (3,905 ) (2,085 ) Other items, net 2,723 2,837 1,650 Income tax expense (benefit) $ 22,852 $ 10,202 $ (21,572 )
Deferred Tax Assets And Deferred Tax Liabilities	The significant components of the Company’s deferred tax assets and deferred tax liabilities at December 31, 2016 and 2015 are as follows: (In thousands) 2016 2015 Deferred tax assets attributable to: Accounts receivable $ 470 $ 64 Inventory 5,061 5,491 Accruals not currently deductible for tax purposes 3,729 6,661 Net operating loss and credit carryforwards 27,198 12,247 Capital loss carryforward 3,134 2,141 Depreciation 8,395 21,834 Equity compensation 5,134 4,673 Asset impairments 1,467 1,751 Other, net 4,356 3,578 Gross deferred tax assets 58,944 58,440 Valuation allowance (14,661 ) (12,724 ) Total deferred tax assets 44,283 45,716 Deferred tax liabilities attributable to: Purchased intangible assets (55,809 ) (68,610 ) Total deferred tax liabilities (55,809 ) (68,610 ) Net deferred tax liabilities $ (11,526 ) $ (22,894 )
Reconciliations of Total Amount of Gross Unrecognized Tax Benefits	Reconciliations of the beginning and ending balances of the total amounts of gross unrecognized tax benefits for the years ended December 31, 2016 and 2015 are as follows: (In thousands) 2016 2015 Gross unrecognized tax benefits at beginning of year $ 7,621 $ 5,984 Increase in tax positions from prior years 14 — Decreases in tax positions for prior years — (51 ) Increases in tax positions for current year 1,944 2,067 Settlements — (194 ) Lapse in statute of limitations (1,286 ) (185 ) Gross unrecognized tax benefits at end of year $ 8,293 $ 7,621

Equity (Tables)

Equity (Tables)	12 Months Ended
	Dec. 31, 2016
Summary of Option Activity	Stock option activity for the 2010 Stock Plan and predecessor plans for the years ended December 31, 2016 , 2015 and 2014 is summarized as follows: 2016 2015 2014 (Shares in thousands) Number of shares Weighted average exercise price Number of shares Weighted average exercise price Number of shares Weighted average exercise price Options outstanding, beginning of year 2,139 $ 10.57 2,034 $ 9.67 1,961 $ 8.20 Granted 549 12.20 411 13.49 651 11.71 Exercised (633 ) 8.66 (219 ) 7.62 (546 ) 6.56 Expired or Forfeited (148 ) 12.32 (87 ) 10.72 (32 ) 14.06 Options outstanding, end of year 1,907 $ 11.54 2,139 $ 10.57 2,034 $ 9.67 Options exercisable, end of year 776 $ 10.65 961 $ 9.07 728 $ 7.92
Summary of Options Outstanding	Options outstanding for the Company’s stock plans at December 31, 2016 are summarized as follows: (Shares in thousands) Options outstanding Options exercisable Range of exercise prices Number outstanding Weighted average remaining life in years Weighted- average exercise price Number exercisable Weighted average exercise $5.40 to $9.88 540 2.6 years $ 9.51 429 $ 9.42 $11.71 to $11.71 527 4.0 years 11.71 260 11.71 $12.20 to $12.20 495 6.1 years 12.20 — — $13.49 to $13.49 345 5.0 years 13.49 87 13.49 1,907 4.4 years 11.54 776 10.65
Weighted Average Assumptions Used In Valuation And Resulting Weighted Average Fair Value Per Option Granted	The fair value of each stock option grant was estimated at the date of grant using a Black-Scholes option pricing model. The following table presents the weighted-average assumptions used in the valuation and the resulting weighted-average fair value per option granted for the years ended December 31, 2016 , 2015 and 2014 : Employee stock options: 2016 2015 2014 Volatility 27.6 % 34.6 % 43.3 % Risk-free interest rate 1.1 % 1.3 % 1.1 % Dividend yield — % — % — % Expected life (years) 4.0 3.9 3.8 Weighted average fair value per option $ 2.85 $ 3.86 $ 3.99
Cash Received From Exercise Of Stock Options and Employee Contribution to ESPP	The table below sets forth the amount of cash received by the Company from the exercise of stock options and employee contributions to the ESPP during the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Exercise of stock options and employee contributions to the ESPP $ 4,844 $ 4,049 $ 3,117
Summary of Restricted Stock Activity	Restricted stock awards are awards of common stock made under the 2010 Stock Plan that are subject to a risk of forfeiture if the awardee terminates employment with the Company prior to the lapse of the restrictions. The value of such stock is determined using the market price on the grant date. Compensation expense for restricted stock awards is generally recognized using the straight-line single-option method. A summary of the Company’s restricted stock activity for the years ended December 31, 2016 , 2015 and 2014 is presented in the following table: 2016 2015 2014 (Shares in thousands) Number of shares Weighted average grant date fair value Number of shares Weighted average grant date fair value Number of shares Weighted average grant date fair value Unvested, beginning of year 1,882 $ 12.25 1,613 $ 10.53 1,570 $ 8.98 Granted 1,249 12.42 1,043 13.47 834 11.59 Vested (711 ) 11.74 (638 ) 10.13 (686 ) 8.32 Forfeited (256 ) 12.44 (136 ) 11.26 (105 ) 10.14 Unvested, end of year 2,164 12.49 1,882 12.25 1,613 10.53
Summary of Allocation of Share Based Compensation Expense	The following table summarizes the allocation of share-based compensation expense related to employee stock options, restricted stock awards and grants under the employee stock purchase plan for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Cost of sales $ 1,579 $ 1,317 $ 809 Engineering, research and development expenses 1,124 1,000 705 Selling, general and administrative expenses 10,733 8,716 7,373 Share-based compensation expense 13,436 11,033 8,887 Tax benefit 4,153 3,362 2,746 Share-based compensation expense, net of tax $ 9,283 $ 7,671 $ 6,141

Benefit Plans (Tables)

Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2016
Estimated Funded Status	The tables below set forth the Company’s estimated funded status as of December 31, 2016 and 2015 : (In thousands) 2016 2015 Change in benefit obligation: Benefit obligation at beginning of year $ 8,194 $ 8,482 Service cost 66 65 Interest cost 91 119 Actuarial (gain) loss (481 ) 15 Benefits paid (1,000 ) (1,165 ) Curtailments — (536 ) Other — 1,412 Foreign exchange impact 203 (198 ) Benefit obligation at end of year 7,073 8,194 Change in plan assets: Fair value of plan assets at beginning of year 718 380 Return on plan assets 7 19 Employer contributions 6 14 Acquisition — 331 Foreign exchange impact 12 (26 ) Fair value of plan assets at end of year 743 718 Funded status: Plan assets less than benefit obligation - Net amount recognized $ (6,330 ) $ (7,476 )
Amounts Recognized in Consolidated Balance Sheet	Amounts recognized in the consolidated balance sheets consist of: (In thousands) 2016 2015 Noncurrent liability $ (6,330 ) $ (7,476 ) Accumulated other comprehensive loss, net of taxes 681 1,149
Amounts Recognized in Accumulated Other Comprehensive Loss Net of Tax	Amounts recognized in accumulated other comprehensive loss, net of tax consist of: (In thousands) 2016 2015 Net actuarial loss $ 170 $ 435 Prior service cost 712 998 Gross amount recognized 882 1,433 Deferred income taxes (201 ) (284 ) Net amount recognized $ 681 $ 1,149
Pension Plans Accumulated Benefit Obligation in Excess of Plan Assets	Information for pension plans with an accumulated benefit obligation in excess of plan assets: (In thousands) 2016 2015 Projected benefit obligation $ 7,073 $ 8,194 Accumulated benefit obligation 6,145 6,948 Fair value of plan assets 743 718
Components of Net Periodic Benefit Cost	The components of the net periodic benefit cost for the years ended December 31, 2016 , 2015 and 2014 were as follows: (In thousands) 2016 2015 2014 Pension benefits: Service cost $ 66 $ 65 $ 64 Interest cost 91 119 111 Expected return on plan assets (10 ) (17 ) (8 ) Amortization of prior service cost 65 76 18 Amortization of net transition obligation — (1 ) (1 ) Amortization of plan loss — 28 22 Recognized actuarial net loss 17 14 7 Curtailments — 160 — Net periodic pension benefit cost $ 229 $ 444 $ 213
Estimated Amount Amortized from Accumulated Other Comprehensive Income Into Net Periodic Benefit Cost	The estimated amount that will be amortized from accumulated other comprehensive income into net periodic benefit cost in 2017 is as follows: (In thousands) Prior service cost $ 64 Net actuarial loss 21 $ 85
Assumptions Used in Determining Benefit Obligation and Net Periodic Benefit Cost for Pension Plans	Assumptions used in determining the benefit obligation and net periodic benefit cost for the Company’s pension plans for the years ended December 31, 2016 , 2015 and 2014 are presented in the following table as weighted-averages: 2016 2015 2014 Benefit obligations: Discount rate 0.63 % 1.10 % 1.13 % Rate of compensation increase 2.90 % 3.70 % 4.41 % Net periodic benefit cost: Discount rate 1.70 % 1.94 % 1.83 % Rate of compensation increase 3.43 % 4.41 % 3.38 % Expected return on plan assets 1.43 % 1.76 % 1.35 %
Fair Value Measurements of Pension Plan Assets	The fair value measurements of the Company’s pension plan assets at December 31, 2016 , by asset category are as follows: (In thousands) Quoted prices in active markets for identical assets Significant observable inputs Significant unobservable inputs Asset category Total (Level 1) (Level 2) (Level 3) Taiwan plan assets (a) $ 743 $ 743 — — (a) This category includes investments in the government of Taiwan’s pension fund. The government of Taiwan is responsible for the strategy and allocation of the investment contributions. The fair value measurements of the Company’s pension plan assets at December 31, 2015 , by asset category are as follows: (In thousands) Quoted prices in active markets for identical assets Significant observable inputs Significant unobservable inputs Asset category Total (Level 1) (Level 2) (Level 3) Taiwan plan assets (a) $ 718 $ 718 — — (a) This category includes investments in the government of Taiwan’s pension fund. The government of Taiwan is responsible for the strategy and allocation of the investment contributions.
Expected Contribution And Benefit Payments	The Company expects to make the following contributions and benefit payments: (In thousands) Contributions Payments 2017 $ 4 $ 65 2018 — 106 2019 — 145 2020 — 187 2021 — 736 Years 2022-2026 — 2,082

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2016
Financial Assets Measured At Fair Value On Recurring Basis	The following table presents the Company’s financial assets and liabilities that are measured at fair value on a recurring basis at December 31, 2016 and 2015 . December 31, 2016 December 31, 2015 (In thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Short-term investments: Common stock — — — — $ 2,181 — — $ 2,181 Other current assets: Foreign exchange forward contracts asset $ — $ 4,784 $ — $ 4,784 $ — $ 2,463 $ — $ 2,463 Total assets measured and recorded at fair value $ — $ 4,784 $ — $ 4,784 $ 2,181 $ 2,463 $ — $ 4,644
Schedule of Derivative Instruments [Table Text Block]	The following table provides information about derivative positions held by the Company as of December 31, 2016 and 2015 : December 31, 2016 December 31, 2015 (In thousands) Gross Gross Net amount Gross Gross Net amount of assets in the Foreign exchange forward contracts $4,784 $0 $4,784 $2,958 $495 $2,463
Derivative Instruments, Gain (Loss) [Table Text Block]	Gains and losses associated with derivatives are recorded in other expense (income), net, in the consolidated statements of operations. Losses associated with derivative instruments not designated as hedging instruments for the years ended December 31, 2016 and 2015 were as follows: (In thousands) 2016 2015 Losses on foreign currency forward contracts $(1,647) $(10,787)

Earning Per Share (EPS) (Tables

Earning Per Share (EPS) (Tables)	12 Months Ended
	Dec. 31, 2016
Reconcilation of Share Amount Used in Computaion of Basic and Diluted Earnings Per Share	Basic EPS is computed by dividing net income by the weighted average number of shares of common stock outstanding during each period. The following table presents a reconciliation of the share amounts used in the computation of basic and diluted earnings per share: (In thousands) 2016 2015 2014 Basic earnings per share—Weighted common shares outstanding 141,093 140,353 139,311 Weighted common shares assumed upon exercise of options and vesting of restricted stock units 957 768 751 Diluted earnings per share—Weighted common shares outstanding 142,050 141,121 140,062
Shares Excluded Underlying Stock Based Awards from Calculations of Diluted EPS	The Company excluded the following shares underlying stock-based awards from the calculations of diluted EPS because their inclusion would have been anti-dilutive for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Shares excluded from calculations of diluted EPS 434 998 1,183

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2016
Summary of Financial Information for Reportable Segments	(In thousands) 2016 2015 2014 Net sales: SCEM $ 428,328 $ 418,878 $ 292,339 AMH 384,284 346,426 346,571 MC 362,658 315,817 323,159 Total net sales $ 1,175,270 $ 1,081,121 $ 962,069 ( In thousands ) 2016 2015 2014 Segment profit: SCEM $ 96,060 $ 100,370 $ 59,017 AMH 73,452 66,419 70,464 MC 110,042 83,076 99,019 Total segment profit $ 279,554 $ 249,865 $ 228,500 ( In thousands ) 2016 2015 2014 Total assets: SCEM $ 766,126 $ 801,250 $ 807,544 AMH 267,085 259,377 288,680 MC 200,399 183,518 195,457 Corporate 465,922 402,552 456,626 Total assets $ 1,699,532 $ 1,646,697 $ 1,748,307 (In thousands) 2016 2015 2014 Depreciation and amortization: SCEM $ 64,062 $ 65,352 $ 51,046 AMH 22,874 23,604 23,099 MC 9,222 8,733 4,982 Corporate 3,728 3,965 4,577 Total depreciation and amortization $ 99,886 $ 101,654 $ 83,704 (In thousands) 2016 2015 2014 Capital expenditures: SCEM $ 27,348 $ 29,333 $ 18,960 AMH 19,029 23,617 13,539 MC 6,281 11,408 11,243 Corporate 12,602 7,619 13,991 Total capital expenditures $ 65,260 $ 71,977 $ 57,733
Reconciliation of Total Segment Profit to Operating Income	The following table reconciles total segment profit to income before income taxes and equity in net loss of affiliate: (In thousands) 2016 2015 2014 Total segment profit $ 279,554 $ 249,865 $ 228,500 Less: Charge for fair value write-up of acquired inventory sold — — 48,586 Amortization of intangibles 44,263 47,349 37,067 Contingent consideration fair value adjustment — — (1,282 ) Unallocated general and administrative expenses 79,755 84,448 122,775 Operating income 155,536 118,068 21,354 Interest expense 36,846 38,667 33,355 Interest income (318 ) (429 ) (1,336 ) Other (income) expense, net (991 ) (12,355 ) 2,727 Income (loss) before income tax expense (benefit) and equity in net loss of affiliate $ 119,999 $ 92,185 $ (13,392 )
Amortization of Intangibles	The table below sets forth the amortization expense for the years ended December 31, 2016 , 2015 , and 2014 : (In thousands) 2016 2015 2014 Amortization expense $ 44,263 $ 47,349 $ 37,067 The following table presents amortization of intangibles for each of the Company’s segments for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Amortization of intangibles: SCEM $ 40,034 $ 42,909 $ 32,099 AMH 4,229 4,440 4,968 Total amortization of intangibles $ 44,263 $ 47,349 $ 37,067
Summary of Total Net Sales to External Customers	The following table summarizes total net sales, based upon the country or region to which sales to external customers were made for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Net sales: United States $ 253,868 $ 253,141 $ 240,767 Japan 156,021 131,336 121,878 Europe 105,779 106,036 108,889 Taiwan 291,309 248,842 230,416 Singapore 65,133 55,409 46,048 South Korea 145,661 148,016 122,322 China 118,435 97,148 73,281 Other 39,064 41,193 18,468 $ 1,175,270 $ 1,081,121 $ 962,069
Summary of Property, Plant and Equipment Attributed to Significant Countries	The following table summarizes property, plant and equipment, net, attributed to significant countries for the years ended December 31, 2016 , 2015 and 2014 : (In thousands) 2016 2015 2014 Property, plant and equipment: United States $ 226,394 $ 229,558 $ 222,125 Korea 33,441 32,400 32,163 Japan 25,248 23,619 22,261 Malaysia 19,180 19,878 20,607 Other 17,299 15,846 16,413 $ 321,562 $ 321,301 $ 313,569

Quarterly Information-Unaudit42

Quarterly Information-Unaudited (Tables)	12 Months Ended
	Dec. 31, 2016
Quartely Information	Fiscal quarter ended (In thousands, except per share data) April 2, 2016 July 2, 2016 October 1, 2016 December 31, 2016 Net sales $ 267,024 $ 303,052 $ 296,692 $ 308,502 Gross profit 114,706 139,205 122,980 131,800 Net income 16,212 32,890 21,947 26,098 Basic net income per common share 0.12 0.23 0.16 0.18 Diluted net income per common share 0.11 0.23 0.15 0.18 Fiscal quarter ended (In thousands, except per share data) March 28, 2015 June 27, 2015 September 26, 2015 December 31, 2015 Net sales $ 263,373 $ 280,709 $ 270,253 $ 266,786 Gross profit 116,536 128,087 116,310 109,298 Net income 14,872 24,448 23,403 17,573 Basic net income per common share 0.11 0.17 0.17 0.13 Diluted net income per common share 0.11 0.17 0.17 0.12

Summary of Significant Accoun43

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Jan. 01, 2016
Significant Accounting Policies [Line Items]
Long-term Debt, Fair Value	$ 602,000
Long-term Debt	$ 584,677	$ 656,044
Estimated useful life of amortizable intangible assets	8 years 6 months	8 years 6 months
Unamortized Debt Issuance Expense			$ 11,200
Minimum
Significant Accounting Policies [Line Items]
Estimated useful life of amortizable intangible assets	3 years
Maximum
Significant Accounting Policies [Line Items]
Estimated useful life of amortizable intangible assets	15 years

Purchase Price (Details)

Purchase Price (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Apr. 30, 2014
Acquisitions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 0	$ 0	$ 809,390
ATMI [Member]
Acquisitions [Line Items]
Cash paid to ATMI shareholders			1,099,033
Cash paid in settlement of share based compensation awards			31,451
Total purchase price			$ 1,130,484
Less cash and cash equivalents acquired				$ 321,094
Total purchase price, net of cash acquired				$ 809,390

Acquisitions Purchase Price All

Acquisitions Purchase Price Allocations (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Apr. 30, 2014
Acquisitions [Line Items]
Goodwill	$ 345,269	$ 342,111	$ 340,743
ATMI [Member]
Acquisitions [Line Items]
Accounts receivable and other current assets				$ 109,965
Inventory				114,200
Property, Plant, and Equipment				124,025
Identifiable intangible assets				297,040
Other Noncurrent Assets				8,503
Current liabilities				(60,943)
Deferred Tax Liabilities and other Noncurrent liabilities				(124,929)
Net assets acquired				467,861
Goodwill				341,529
Total purchase price, net of cash acquired				$ 809,390

Proforma Results (Details)

Proforma Results (Details) - ATMI [Member] $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2014USD ($)$ / shares
Acquisitions [Line Items]
Net Sales | $	$ 1,076,334
Net Income | $	$ 68,279
Net income per common share - basic | $ / shares	$ 0.49
Net income per common share - diluted | $ / shares	$ 0.49

Acquisitions (Details)

Acquisitions (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Apr. 30, 2014	Apr. 01, 2014
Acquisitions [Line Items]
Charge for fair value write-up of acquired inventory sold	$ 0	$ 0	$ 48,586
Goodwill	345,269	342,111	340,743
Payments to Acquire Businesses, Net of Cash Acquired	0	0	809,390
Long-term Debt, Gross	593,850	668,850			$ 820,000
ATMI [Member]
Acquisitions [Line Items]
Inventory					114,200
Identifiable intangible assets					$ 297,040
Sale of Stock, Price Per Share					$ 34
Inventory fair value step-up					$ 48,600
Charge for fair value write-up of acquired inventory sold			$ 48,600
Property, Plant, and Equipment					124,025
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			8 years 3 months
Goodwill					341,529
Payments to Acquire Businesses, Gross			$ 1,130,484
Direct costs associated with the transaction			13,300
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period				$ 361,000
Total purchase price, net of cash acquired					809,390
Pre-combination payment of unvested portion of awards			21,300
Customer Relationships | ATMI [Member]
Acquisitions [Line Items]
Finite-lived Intangible Assets Acquired			$ 165,100
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			10 years
Trademarks and Trade names | ATMI [Member]
Acquisitions [Line Items]
Finite-lived Intangible Assets Acquired			$ 120,800
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			6 years
Other Intangible Assets | ATMI [Member]
Acquisitions [Line Items]
Finite-lived Intangible Assets Acquired			$ 11,100
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			7 years 5 months
Noncompete Agreements [Member] | ATMI [Member]
Acquisitions [Line Items]
Finite-lived Intangible Assets Acquired			$ 7,500
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			1 year 7 months
Senior secured term loan [Member]
Acquisitions [Line Items]
Long-term Debt, Gross	233,850	308,850			$ 460,000
Senior unsecured notes [Member]
Acquisitions [Line Items]
Long-term Debt, Gross	$ 360,000	$ 360,000
Senior unsecured notes [Member] | ATMI [Member]
Acquisitions [Line Items]
Long-term Debt, Gross						$ 360,000

Trade Accounts and Notes Rece48

Trade Accounts and Notes Receivable (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 163,759	$ 138,473
Notes receivable	4,390	4,254
Trade accounts and notes receivable, gross	168,149	142,727
Less allowance for doubtful accounts	2,474	1,318
Trade accounts and notes receivable, net	$ 165,675	$ 141,409

Inventories (Detail)

Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Inventory Net
Raw materials	$ 53,109	$ 51,063
Work-in-process	15,976	11,644
Finished goods	114,444	110,469
Total inventories	$ 183,529	$ 173,176

Inventories Additional (Detail)

Inventories Additional (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Inventory Net [Abstract]
Consignment inventories held by customers	$ 16.4	$ 16.1

Property, Plant and Equipment51

Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Land	$ 15,903	$ 14,630
Buildings and improvements	155,769	155,337
Manufacturing equipment	248,201	233,473
Canisters and cylinders	65,100	54,263
Molds	76,782	82,019
Office furniture and equipment	107,194	98,291
Construction in progress	40,136	25,128
Property, plant and equipment, gross	709,085	663,141
Less accumulated depreciation	387,523	341,840
Property, plant and equipment, net	$ 321,562	$ 321,301	$ 313,569
Minimum | Building and Building Improvements
Property, Plant and Equipment [Line Items]
Estimated useful lives in years	5 years
Minimum | Manufacturing Equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives in years	5 years
Minimum | Canisters and cylinders
Property, Plant and Equipment [Line Items]
Estimated useful lives in years	3 years
Minimum | Molds
Property, Plant and Equipment [Line Items]
Estimated useful lives in years	3 years
Minimum | Office Furniture and Equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives in years	3 years
Maximum | Building and Building Improvements
Property, Plant and Equipment [Line Items]
Estimated useful lives in years	35 years
Maximum | Manufacturing Equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives in years	10 years
Maximum | Canisters and cylinders
Property, Plant and Equipment [Line Items]
Estimated useful lives in years	12 years
Maximum | Molds
Property, Plant and Equipment [Line Items]
Estimated useful lives in years	5 years
Maximum | Office Furniture and Equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives in years	8 years

Depreciation Expense (Detail)

Depreciation Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 55,623	$ 54,305	$ 46,637

Intangible Assets Goodwill Roll

Intangible Assets Goodwill Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Goodwill	$ 345,269	$ 342,111	$ 340,743
Addition due to purchase accounting adjustments	4,434	4,972
Other, including foreign currency translation	(1,276)	(3,604)
SCEM
Goodwill [Line Items]
Goodwill	297,858	294,700	293,260
Addition due to purchase accounting adjustments	4,434	4,972
Other, including foreign currency translation	(1,276)	(3,532)
AMH
Goodwill [Line Items]
Goodwill	47,411	47,411	$ 47,483
Addition due to purchase accounting adjustments	0	0
Other, including foreign currency translation	$ 0	$ (72)

Intangible Assets Goodwill addi

Intangible Assets Goodwill additional (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 345,269	$ 342,111	$ 340,743
Goodwill, Period Increase	$ 3,200

Intangible Assets (Detail)

Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	$ 454,755	$ 452,826
Accumulated amortization	237,207	193,884
Net carrying value	$ 217,548	$ 258,942
Weighted average life in years	8 years 6 months	8 years 6 months
Developed Technology Rights
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	$ 202,591	$ 202,732
Accumulated amortization	126,077	102,883
Net carrying value	$ 76,514	$ 99,849
Weighted average life in years	6 years 8 months	6 years 8 months
Trademarks and Trade names
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	$ 16,661	$ 16,676
Accumulated amortization	12,617	10,681
Net carrying value	$ 4,044	$ 5,995
Weighted average life in years	9 years 11 months	9 years 11 months
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	$ 216,918	$ 218,283
Accumulated amortization	90,581	72,948
Net carrying value	$ 126,337	$ 145,335
Weighted average life in years	10 years 4 months	10 years 4 months
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Gross carrying Amount	$ 18,585	$ 15,135
Accumulated amortization	7,932	7,372
Net carrying value	$ 10,653	$ 7,763
Weighted average life in years	6 years 6 months	5 years 8 months

Amortization Expense (Detail)

Amortization Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 44,263	$ 47,349	$ 37,067

Estimated Future Amortization E

Estimated Future Amortization Expense (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
2,017	$ 43,101
2,018	42,721
2,019	40,480
2,020	25,694
2,021	18,951
Thereafter	46,601
Intangible assets, net	$ 217,548	$ 258,942

Long-term debt schedule (Detail

Long-term debt schedule (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Apr. 30, 2014
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 593,850	$ 668,850	$ 820,000
Unamortized discount and debt issuance costs	9,173	12,806
Long-term Debt	584,677	656,044
Less current maturities of long-term debt	100,000	50,000
Long-term debt less current maturities	484,677	606,044
Senior secured term loan [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	233,850	308,850	$ 460,000
Senior unsecured notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 360,000	$ 360,000

Maturity Schedule (Details)

Maturity Schedule (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Apr. 30, 2014
Debt [Abstract]
2,017	$ 0
2,018	0
2,019	0
2,020	0
2,021	233,850
Thereafter	360,000
Long-term Debt, Gross	$ 593,850	$ 668,850	$ 820,000

Additional Debt (Details)

Additional Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Apr. 30, 2014	Apr. 01, 2014
Debt Instrument [Line Items]
Long-term debt, current maturities	$ 100,000	$ 50,000
Debt discount				$ 2,300
Debt Issuance Cost	0	0	$ 20,747
Amortization of debt issuance costs	3,947	3,344	$ 5,848
Debt Instrument, Fee Amount				3,951
Long-term Debt, Gross	$ 593,850	668,850		820,000
Senior unsecured notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					6.00%
Debt Instrument, Redemption Price, Percentage	100.00%
Minimum redemption price on or after April 1, 2017	100.00%
Maximum redemption price on or after April 1, 2017	104.50%
Redemption price, change of control	101.00%
Event of default percentage	25.00%
Long-term Debt, Gross	$ 360,000	360,000
ABL Facility [Member]
Debt Instrument [Line Items]
Maximum Borrowing Capacity	75,000
Current Borrowing Capacity	60,019
Additional borrowing capacity that may be increased by under ABL	35,000
Letters of credit maximum borrowing capacity	35,000
Swingline loans available	$ 20,000
Line of Credit Facility, Commitment Fee Percentage	0.33%
Long-term Line of Credit	$ 0
Senior secured term loan [Member]
Debt Instrument [Line Items]
Increased borrowing capacity under certain conditions	$ 225,000
Debt Instrument, Interest Rate, Stated Percentage	3.52%
Repayments of Debt	$ 75,000	100,000
Prepayment % of annual excess cash flow	50.00%
Prepayment % for asset sales and casualty events	100.00%
Long-term Debt, Gross	$ 233,850	$ 308,850		$ 460,000

Future Minimum Lease Payments (

Future Minimum Lease Payments (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Operating Leased Assets [Line Items]
2,017	$ 9,837
2,018	7,356
2,019	5,635
2,020	4,220
2,021	3,860
Thereafter	14,090
Total minimum lease payments	$ 44,998

Lease Commitments - Additional

Lease Commitments - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Leased Assets [Line Items]
Total rental expense for all equipment and building operating leases	$ 13.3	$ 13.8	$ 13.3

Asset Retirement Obligations (D

Asset Retirement Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Asset Retirement Obligation [Abstract]
Asset Retirement Obligation, Beginning	$ 11,334	$ 9,950
Liabilities Assumed in ATMI acquisition	0	589
Liabilities Settled	(975)	(698)
Liabilities Incurred	491	1,094
Accretion Expense	188	196
Revision of Estimate	491	203
Asset Retirement Obligation, Ending	$ 11,529	$ 11,334

Income (Loss) Before Income Tax

Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Domestic	$ (7,328)	$ (16,751)	$ (118,917)
Foreign	127,327	108,936	105,525
Income (loss) before income tax expense (benefit) and equity in net loss of affiliate	$ 119,999	$ 92,185	$ (13,392)

Components of Income Tax Expens

Components of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Components Of Income Tax Expense Benefit [Line Items]
Current, Federal	$ 7,759	$ 4,170	$ 1,574
Current, State	(10)	528	111
Current, Foreign	31,387	18,817	21,459
Current, Total	39,136	23,515	23,144
Deferred (net of valuation allowance), Federal	(8,183)	(11,374)	(41,484)
Deferred (net of valuation allowance), State	250	(738)	(1,545)
Deferred (net of valuation allowance), Foreign	(8,351)	(1,201)	(1,687)
Deferred Income Tax Expense (Benefit)	(16,284)	(13,313)	(44,716)
Income tax expense (benefit)	$ 22,852	$ 10,202	$ (21,572)

Reconciliation of Income Tax Ex

Reconciliation of Income Tax Expense With Expected Amounts Based Upon Statutory Federal Tax Rates (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Investments, Owned, Federal Income Tax Note [Line Items]
Expected federal income tax at statutory rate	$ 42,000	$ 32,265	$ (4,687)
State income taxes before valuation allowance, net of federal tax effect	(769)	(576)	(2,115)
Effect of foreign source income	(22,242)	(23,374)	(19,996)
Tax contingencies	1,103	1,483	1,379
Valuation allowance	1,713	1,109	2,106
Nondeductible acquisition costs	0	363	2,176
U.S. federal research credit	(1,676)	(3,905)	(2,085)
Other items, net	2,723	2,837	1,650
Income tax expense (benefit)	$ 22,852	$ 10,202	$ (21,572)

Deferred Tax Assets and Deferre

Deferred Tax Assets and Deferred Tax Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Deferred Tax Assets and Liabilities [Line Items]
Accounts receivable	$ 470	$ 64
Inventory	5,061	5,491
Accruals not currently deductible for tax purposes	3,729	6,661
Net operating loss and credit carryforwards	27,198	12,247
Capital loss carryforward	3,134	2,141
Depreciation	8,395	21,834
Equity compensation	5,134	4,673
Asset impairments	1,467	1,751
Other, net	4,356	3,578
Gross deferred tax assets	58,944	58,440
Valuation allowance	(14,661)	(12,724)
Total deferred tax assets	44,283	45,716
Purchased intangible assets	(55,809)	(68,610)
Gross deferred tax liabilities	(55,809)	(68,610)
Total deferred tax liabilities	$ (11,526)	$ (22,894)

Reconciliations of Total Amount

Reconciliations of Total Amount of Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Schedule of Unrecognized Tax Benefits [Line Items]
Gross unrecognized tax benefits at beginning of year	$ 7,621	$ 5,984
Increase in tax positions for prior years	14	0
Decreases in tax positions for prior years	0	(51)
Increases in tax positions for current year	1,944	2,067
Settlements	0	(194)
Lapse in statute of limitations	(1,286)	(185)
Gross unrecognized tax benefits at end of year	$ 8,293	$ 7,621

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax [Line Items]
Deferred Tax Liabilities, Net	$ (11,526)	$ (22,894)
Deferred Tax Assets, Valuation Allowance	14,661	12,724
Undistributed foreign earnings	822,000
Withholding taxes to be incurred on distribution of retained earnings	$ 13,000
Tax credit carryforwards, expiration date	Dec. 31, 2019
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	$ 8,800
Unrecognized tax benefits that would impact effective tax rate	6,800
Accrued interest and penalties related to unrecognized tax benefits	700	600
Interest and penalties recognized in the statement of operations	100	100	$ 400
Gross unrecognized tax benefit decrease within next twelve months	600
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount			2,600
State
Income Tax [Line Items]
State operating loss carryforwards	$ 5,000
Operating loss carryforwards, expiration date	Dec. 31, 2019
Year Which Prior Year's Tax Returns Are No Longer Subject to Tax Examination	Dec. 31, 2012
Foreign
Income Tax [Line Items]
Net deferred tax assets	$ 6,600	2,400
Deferred Tax Assets, Valuation Allowance	$ 5,000	3,800
Operating loss carryforwards, expiration date	Dec. 31, 2017
Foreign operating loss carryforwards	$ 17,900
Year Which Prior Year's Tax Returns Are No Longer Subject to Tax Examination	Dec. 31, 2010
U.S.
Income Tax [Line Items]
Deferred Tax Liabilities, Net	$ (3,500)	(12,600)
Deferred Tax Assets, Valuation Allowance	$ 9,600	8,900
Year Which Prior Year's Tax Returns Are No Longer Subject to Tax Examination	Dec. 31, 2012
Malaysia
Income Tax [Line Items]
Income tax benefit estimate attributable to the tax status of subsidiary		$ 10,200	$ 8,000
Income tax expense benefit per diluted share		$ 0.07	$ 0.06
additional effective tax rate benefit	$ 4,300	$ 4,400	$ 3,300
Korea Tax Authority [Member]
Income Tax [Line Items]
Income tax benefit estimate attributable to the tax status of subsidiary	$ 3,300	$ 1,500	$ 200
Income tax expense benefit per diluted share	$ 0.02	$ 0.01	$ 0
additional effective tax rate benefit	$ 1,900	$ 900	$ 200
Inland Revenue, Singapore (IRAS) [Member]
Income Tax [Line Items]
Income tax benefit estimate attributable to the tax status of subsidiary	$ 2,300	$ 1,700	$ 1,200
Income tax expense benefit per diluted share	$ 0.02	$ 0.01	$ 0.01
additional effective tax rate benefit	$ 6,500	$ 4,600	$ 3,700
Research Tax Credit Carryforward [Member]
Income Tax [Line Items]
Tax credit carryforwards, expiration date	Dec. 31, 2033
Tax Credit Carryforward, Amount	$ 8,500

Summary of Option Activity (Det

Summary of Option Activity (Detail) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Number of shares
Number of shares, Options outstanding, beginning of year	2,139	2,034	1,961
Number of shares, Granted	549	411	651
Number of shares, Exercised	(633)	(219)	(546)
Number of shares, Expired or Forfeited	(148)	(87)	(32)
Number of shares, Options outstanding, end of year	1,907	2,139	2,034
Number of shares, Options exercisable, end of year	776	961	728
Weighted average exercise price
Weighted average exercise price, Options outstanding, beginning of year	$ 10.57	$ 9.67	$ 8.20
Weighted average exercise price, Granted	12.20	13.49	11.71
Weighted average exercise price, Exercised	8.66	7.62	6.56
Weighted average exercise price, Expired or Forfeited	12.32	10.72	14.06
Weighted average exercise price, Options outstanding, end of year	11.54	10.57	9.67
Weighted average exercise price, Options exercisable, end of year	$ 10.65	$ 9.07	$ 7.92

Summary of Options Outstanding

Summary of Options Outstanding (Detail) shares in Thousands	12 Months Ended
	Dec. 31, 2016$ / sharesshares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Options outstanding | shares	1,907
Options outstanding, Weighted average remaining life in years	4 years 5 months
Options outstanding, Weighted-average exercise price	$ 11.54
Number of Options exercisable | shares	776
Options exercisable, Weighted average exercise price	$ 10.65
Range One
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, minimum	5.40
Range of exercise prices, maximum	$ 9.88
Number of Options outstanding | shares	540
Options outstanding, Weighted average remaining life in years	2 years 7 months
Options outstanding, Weighted-average exercise price	$ 9.51
Number of Options exercisable | shares	429
Options exercisable, Weighted average exercise price	$ 9.42
Range Two
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, minimum	11.71
Range of exercise prices, maximum	$ 11.71
Number of Options outstanding | shares	527
Options outstanding, Weighted average remaining life in years	4 years
Options outstanding, Weighted-average exercise price	$ 11.71
Number of Options exercisable | shares	260
Options exercisable, Weighted average exercise price	$ 11.71
Range Three
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, minimum	12.20
Range of exercise prices, maximum	$ 12.20
Number of Options outstanding | shares	495
Options outstanding, Weighted average remaining life in years	6 years 1 month
Options outstanding, Weighted-average exercise price	$ 12.20
Number of Options exercisable | shares	0
Options exercisable, Weighted average exercise price	$ 0
Range Four
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, minimum	13.49
Range of exercise prices, maximum	$ 13.49
Number of Options outstanding | shares	345
Options outstanding, Weighted average remaining life in years	5 years
Options outstanding, Weighted-average exercise price	$ 13.49
Number of Options exercisable | shares	87
Options exercisable, Weighted average exercise price	$ 13.49

Weighted Average Assumptions Us

Weighted Average Assumptions Used in Valuation and Resulting Weighted Average Fair Value Per Option Granted (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility	27.60%	34.60%	43.30%
Risk-free interest rate	1.10%	1.30%	1.10%
Dividend yield	0.00%	0.00%	0.00%
Expected life (years)	4 years	3 years 11 months	3 years 9 months
Weighted average fair value per option	$ 2.85	$ 3.86	$ 3.99

Cash Received from Exercise of

Cash Received from Exercise of Stock Options and Employee Contribution to ESPP (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of stock options and employee contributions to the ESPP	$ 4,844	$ 4,049	$ 3,117

Summary of Restricted Stock Act

Summary of Restricted Stock Activity (Detail) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Number of shares
Number of shares, Unvested, beginning of year	1,882	1,613	1,570
Number of shares, Granted	1,249	1,043	834
Number of shares, Vested	(711)	(638)	(686)
Number of shares, Forfeited	(256)	(136)	(105)
Number of shares, Unvested, end of year	2,164	1,882	1,613
Weighted average grant date fair value, Unvested
Weighted average grant date fair value, Unvested, beginning of year	$ 12.25	$ 10.53	$ 8.98
Weighted average grant date fair value, Granted	12.42	13.47	11.59
Weighted average grant date fair value, Vested	11.74	10.13	8.32
Weighted average grant date fair value, Forfeited	12.44	11.26	10.14
Weighted average grant date fair value, Unvested, end of year	$ 12.49	$ 12.25	$ 10.53

Summary of Allocation of Share

Summary of Allocation of Share Based Compensation Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 13,436	$ 11,033	$ 8,887
Tax benefit	4,153	3,362	2,746
Share-based compensation expense, net of tax	9,283	7,671	6,141
Cost of Sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	1,579	1,317	809
Engineering, Research and Development Expense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	1,124	1,000	705
Selling, General And Administrative Expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 10,733	$ 8,716	$ 7,373

Share Based Compensation Expens

Share Based Compensation Expense Recognized in Statement of Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 13,436	$ 11,033	$ 8,887

Equity - Additional Information

Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Feb. 05, 2016
Equity [Line Items]
Stock Repurchase Program, Authorized Amount				$ 100,000
Payments for Repurchase of Common Stock	$ 7,573	$ 0	$ 0
Shares absorbed into plan			5,700
Term of plan, in years	10 years
Weighted average remaining contractual term option outstanding	4 years 5 months
Weighted average remaining contractual term option exercisable	3 years 2 months
Shares available for future grants	9,400	10,400	11,600
Total pre-tax intrinsic value of stock options exercised	$ 5,100	$ 1,400
Total pre-tax intrinsic value based on the closing stock price	$ 17.90
Intrinsic value of stock options outstanding	$ 12,100
Intrinsic value of stock options exercisable	$ 5,600
Weighted average remaining contractual term for unvested restricted shares, in years	2 years 5 months	2 years 4 months
performance shares granted	200	200
Share-based payment awards in the form of stock option awards	549	411	651
Contractual term of stock options (in years)	7 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years 6 months
Minimum
Equity [Line Items]
Vesting period, in years	3 years
Maximum
Equity [Line Items]
Vesting period, in years	4 years
Unvested Stock Options
Equity [Line Items]
Total compensation cost not yet recognized	$ 2,800
Restricted Stock
Equity [Line Items]
Total compensation cost not yet recognized	$ 21,400
Employee Stock Purchase Plan
Equity [Line Items]
Shares available for future grants	2,300
Percentage of employee contribution from compensation	10.00%
Rate of discount from the fair market value	15.00%
Shares purchase by employees	300	300	200
Weighted-average price per share paid by the employees	$ 11.56	$ 11.21	$ 10.57

Benefit Plans - Additional Info

Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Maximum matching contribution	4.00%
Employer profit sharing and matching contribution expense	$ 4.9	$ 5	$ 4.4

Estimated Funded Status (Detail

Estimated Funded Status (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 8,194	$ 8,482
Service cost	66	65	$ 64
Interest cost	91	119	111
Actuarial (gain) loss	(481)	15
Benefits paid	(1,000)	(1,165)
Curtailments	0	(536)
Other	0	1,412
Foreign exchange impact	203	(198)
Benefit obligation at end of year	7,073	8,194	8,482
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	718	380
Return on plan assets	7	19
Employer contributions	6	14
Acquisitions	0	331
Foreign exchange impact	12	(26)
Fair value of plan assets at end of year	743	718	$ 380
Plan assets less than benefit obligation - Net amount recognized	$ (6,330)	$ (7,476)

Amounts Recognized in Consolida

Amounts Recognized in Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Noncurrent liability	$ (6,330)	$ (7,476)
Accumulated Other Comprehensive loss, net of taxes	$ 681	$ 1,149

Amounts Recognized in Accumulat

Amounts Recognized in Accumulated Other Comprehensive Loss Net of Tax (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ 170	$ 435
Prior service cost	712	998
Gross amount recognized	882	1,433
Deferred income taxes	(201)	(284)
Net amount recognized	$ 681	$ 1,149

Pension Plans Accumulated Benef

Pension Plans Accumulated Benefit Obligation in Excess of Plan Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 7,073	$ 8,194
Accumulated benefit obligation	6,145	6,948
Fair value of plan assets	$ 743	$ 718

Components of Net Periodic Bene

Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 66	$ 65	$ 64
Interest cost	91	119	111
Expected return on plan assets	(10)	(17)	(8)
Amortization of prior service cost	65	76	18
Amortization of net transition obligation	0	(1)	(1)
Amortization of plan loss	0	28	22
Recognized actuarial net loss	17	14	7
Curtailments	0	160	0
Net periodic pension benefit cost	$ 229	$ 444	$ 213

Estimated Amount Amortized from

Estimated Amount Amortized from Accumulated Other Comprehensive Income Into Net Periodic Benefit Cost (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	$ 64
Net actuarial loss	21
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year, Total	$ 85

Assumptions Used in Determining

Assumptions Used in Determining Benefit Obligation and Net Periodic Benefit Cost for Pension Plans (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Benefit obligations, Discount rate	0.63%	1.10%	1.13%
Benefit obligations, Rate of compensation increase	2.90%	3.70%	4.41%
Net periodic benefit cost, Discount rate	1.70%	1.94%	1.83%
Net periodic benefit cost, Rate of compensation increase	3.43%	4.41%	3.38%
Net periodic benefit cost, Expected return on plan assets	1.43%	1.76%	1.35%

Fair Value Measurements of Pens

Fair Value Measurements of Pension Plan Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 743	$ 718	$ 380
Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 743	$ 718

Expected Contribution and Benef

Expected Contribution and Benefit Payments (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Defined Benefit Plan Disclosure [Line Items]
Contribution in year 2017	$ 4
Payments in year 2017	65
Payments in year 2018	106
Payments in year 2019	145
Payments in year 2020	187
Payments in year 2021	736
Payments in years 2022-2026	$ 2,082

Financial Assets Measured at Fa

Financial Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Short-term investments	$ 0	$ 2,181	$ 4,600
Foreign exchange forward contracts asset	4,784	2,463
Total assets measured and recorded at fair value	4,784	4,644
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Short-term investments	0	2,181
Foreign exchange forward contracts asset	0	0
Total assets measured and recorded at fair value	0	2,181
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Short-term investments	0	0
Foreign exchange forward contracts asset	4,784	2,463
Total assets measured and recorded at fair value	4,784	2,463
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Short-term investments	0	0
Foreign exchange forward contracts asset	0	0
Total assets measured and recorded at fair value	$ 0	$ 0

Fair Value Measurements Informa

Fair Value Measurements Information about derivative positions (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross Derivative Asset	$ 4,784	$ 2,958
Gross Derivative Liability	0	495
Foreign exchange forward contracts asset, net	$ 4,784	$ 2,463

Fair Value Measurements (Losses

Fair Value Measurements (Losses) gains on forward currency contracts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses on foreign exchange forward contracts	$ (1,647)	$ (10,787)

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Other than Temporary Impairment Losses, Investments	$ 500	$ 1,900
Short-term investments	$ 2,181	$ 4,600	$ 0

Reconciliation of Share Amount

Reconciliation of Share Amount Used in Computation of Basic and Diluted Earnings Per Share (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Basic earnings per share-Weighted common shares outstanding	141,093	140,353	139,311
Weighted common shares assumed upon exercise of options and vesting of restricted stock units	957	768	751
Diluted earnings per share-Weighted common shares outstanding	142,050	141,121	140,062

Shares Excluded Underlying Stoc

Shares Excluded Underlying Stock Based Awards from Calculations of Diluted EPS (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from calculations of diluted EPS	434	998	1,183

Summary of Financial Informatio

Summary of Financial Information for Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Total net sales	$ 308,502	$ 296,692	$ 303,052	$ 267,024	$ 266,786	$ 270,253	$ 280,709	$ 263,373	$ 1,175,270	$ 1,081,121	$ 962,069
Total segment profit									279,554	249,865	228,500
Total assets	1,699,532				1,646,697				1,699,532	1,646,697	1,748,307
Total depreciation and amortization									99,886	101,654	83,704
Total capital expenditures									65,260	71,977	57,733
SCEM
Segment Reporting Information [Line Items]
Total net sales									428,328	418,878	292,339
Total segment profit									96,060	100,370	59,017
Total assets	766,126				801,250				766,126	801,250	807,544
Total depreciation and amortization									64,062	65,352	51,046
Total capital expenditures									27,348	29,333	18,960
AMH
Segment Reporting Information [Line Items]
Total net sales									384,284	346,426	346,571
Total segment profit									73,452	66,419	70,464
Total assets	267,085				259,377				267,085	259,377	288,680
Total depreciation and amortization									22,874	23,604	23,099
Total capital expenditures									19,029	23,617	13,539
MC
Segment Reporting Information [Line Items]
Total net sales									362,658	315,817	323,159
Total segment profit									110,042	83,076	99,019
Total assets	200,399				183,518				200,399	183,518	195,457
Total depreciation and amortization									9,222	8,733	4,982
Total capital expenditures									6,281	11,408	11,243
Corporate
Segment Reporting Information [Line Items]
Total assets	$ 465,922				$ 402,552				465,922	402,552	456,626
Total depreciation and amortization									3,728	3,965	4,577
Total capital expenditures									$ 12,602	$ 7,619	$ 13,991

Reconciliation of Total Segment

Reconciliation of Total Segment Profit to Operating Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment profit	$ 279,554	$ 249,865	$ 228,500
Charge for fair value write-up of acquired inventory sold	0	0	48,586
Amortization of intangibles	44,263	47,349	37,067
Contingent consideration fair value adjustment	0	0	(1,282)
Unallocated general and administrative expenses	79,755	84,448	122,775
Operating income	155,536	118,068	21,354
Interest expense	36,846	38,667	33,355
Interest income	318	429	1,336
Other (income) expense, net	(991)	(12,355)	2,727
Income (loss) before income tax expense (benefit) and equity in net loss of affiliate	$ 119,999	$ 92,185	$ (13,392)

Amortization of Intangibles (De

Amortization of Intangibles (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Amortization of intangibles	$ 44,263	$ 47,349	$ 37,067
SCEM
Segment Reporting Information [Line Items]
Amortization of intangibles	40,034	42,909	32,099
AMH
Segment Reporting Information [Line Items]
Amortization of intangibles	$ 4,229	$ 4,440	$ 4,968

Summary of Total Net Sales to E

Summary of Total Net Sales to External Customers (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net sales	$ 308,502	$ 296,692	$ 303,052	$ 267,024	$ 266,786	$ 270,253	$ 280,709	$ 263,373	$ 1,175,270	$ 1,081,121	$ 962,069
UNITED STATES
Segment Reporting Information [Line Items]
Net sales									253,868	253,141	240,767
JAPAN
Segment Reporting Information [Line Items]
Net sales									156,021	131,336	121,878
GERMANY
Segment Reporting Information [Line Items]
Net sales									105,779	106,036	108,889
TAIWAN, PROVINCE OF CHINA
Segment Reporting Information [Line Items]
Net sales									291,309	248,842	230,416
SINGAPORE
Segment Reporting Information [Line Items]
Net sales									65,133	55,409	46,048
KOREA, REPUBLIC OF
Segment Reporting Information [Line Items]
Net sales									145,661	148,016	122,322
CHINA
Segment Reporting Information [Line Items]
Net sales									118,435	97,148	73,281
All Other Segments
Segment Reporting Information [Line Items]
Net sales									$ 39,064	$ 41,193	$ 18,468

Summary of Property, Plant and

Summary of Property, Plant and Equipment Attributed to Significant Countries (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Property, plant and equipment	$ 321,562	$ 321,301	$ 313,569
UNITED STATES
Segment Reporting Information [Line Items]
Property, plant and equipment	226,394	229,558	222,125
KOREA, REPUBLIC OF
Segment Reporting Information [Line Items]
Property, plant and equipment	33,441	32,400	32,163
JAPAN
Segment Reporting Information [Line Items]
Property, plant and equipment	25,248	23,619	22,261
Malaysia
Segment Reporting Information [Line Items]
Property, plant and equipment	19,180	19,878	20,607
All Other Segments
Segment Reporting Information [Line Items]
Property, plant and equipment	$ 17,299	$ 15,846	$ 16,413

Sales from Largest Customer (De

Sales from Largest Customer (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
TSMC [Member]
Revenues	$ 161,880	$ 134,099	$ 130,880

Quarterly Information (Detail)

Quarterly Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Quarterly Financial Information [Line Items]
Net sales	$ 308,502	$ 296,692	$ 303,052	$ 267,024	$ 266,786	$ 270,253	$ 280,709	$ 263,373	$ 1,175,270	$ 1,081,121	$ 962,069
Gross profit	131,800	122,980	139,205	114,706	109,298	116,310	128,087	116,536	508,691	470,231	376,683
Net income	$ 26,098	$ 21,947	$ 32,890	$ 16,212	$ 17,573	$ 23,403	$ 24,448	$ 14,872	$ 97,147	$ 80,296	$ 7,887
Basic net income per common share	$ 0.18	$ 0.16	$ 0.23	$ 0.12	$ 0.13	$ 0.17	$ 0.17	$ 0.11	$ 0.69	$ 0.57	$ 0.06
Diluted net income per common share	$ 0.18	$ 0.15	$ 0.23	$ 0.11	$ 0.12	$ 0.17	$ 0.17	$ 0.11	$ 0.68	$ 0.57	$ 0.06

Subsequent Event (Details)

Subsequent Event (Details) shares in Millions	Feb. 15, 2017shares
Subsequent Event [Member]
Subsequent Event [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	100