Entegris (ENTG) 10-Q 26 Apr 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 23, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	ENTG
Entity Registrant Name	ENTEGRIS INC
Entity Central Index Key	1,101,302
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		141,739,172

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 550,236	$ 625,408
Trade accounts and notes receivable, net of allowance for doubtful accounts of $917 and $860	195,284	183,434
Inventories	214,145	198,089
Deferred tax charges and refundable income taxes	17,373	18,012
Other current assets	34,012	32,665
Total current assets	1,011,050	1,057,608
Property, plant and equipment, net of accumulated depreciation of $443,614 and $427,766	364,301	359,523
Other assets:
Goodwill	375,340	359,688
Intangible assets, net of accumulated amortization of $293,265 and $281,439	190,814	182,430
Deferred tax assets and other noncurrent tax assets	10,186	9,103
Other	9,639	7,820
Total assets	1,961,330	1,976,172
Current liabilities:
Long-term debt, current maturities	100,000	100,000
Accounts payable	68,406	68,762
Accrued payroll and related benefits	30,107	64,860
Other accrued liabilities	39,959	34,514
Income taxes payable	27,996	22,835
Total current liabilities	266,468	290,971
Long-term debt, excluding current maturities, net of unamortized discount and debt issuance costs of $9,029 and $9,470	549,821	574,380
Pension benefit obligations and other liabilities	33,778	32,130
Deferred tax liabilities and other noncurrent tax liabilities	86,869	85,673
Commitments and contingent liabilities	0	0
Equity:
Preferred stock, par value $.01; 5,000,000 shares authorized; none issued and outstanding as of March 31, 2018 and December 31, 2017	0	0
Common stock, par value $.01; 400,000,000 shares authorized; issued and outstanding shares as of March 31, 2018 and December 31, 2017: 141,802,172 and 141,282,539	1,418	1,413
Additional paid-in capital	856,373	867,699
Retained earnings	186,276	147,418
Accumulated other comprehensive loss	(19,673)	(23,512)
Total equity	1,024,394	993,018
Total liabilities and equity	$ 1,961,330	$ 1,976,172

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Trade accounts and notes receivable, allowance for doubtful accounts	$ 917	$ 860
Property, plant and equipment, accumulated depreciation	443,614	427,766
Intangible assets, Accumulated amortization	293,265	281,439
Unamortized discount and debt issuance costs	$ 9,029	$ 9,470
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	141,802,172	141,282,539
Common stock, shares outstanding	141,802,172	141,282,539

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Net sales	$ 367,199	$ 317,377
Cost of sales	191,202	177,781
Gross profit	175,997	139,596
Selling, general and administrative expenses	58,269	50,492
Engineering, research and development expenses	27,586	27,239
Amortization of intangible assets	11,669	10,945
Operating income	78,473	50,920
Interest expense	8,159	8,473
Interest income	(933)	(80)
Other expense, net	139	902
Income before income tax expense	71,108	41,625
Income tax expense	13,546	9,111
Net income	$ 57,562	$ 32,514
Basic net income per common share	$ 0.41	$ 0.23
Diluted net income per common share	$ 0.40	$ 0.23
Weighted shares outstanding:
Basic	141,581	141,501
Diluted	143,652	143,315

Condensed Consolidated Stateme5

Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Net income	$ 57,562	$ 32,514
Other comprehensive income, net of tax
Foreign currency translation adjustments	3,835	16,123
Pension liability adjustments	4	(11)
Other comprehensive income	3,839	16,112
Comprehensive income	$ 61,401	$ 48,626

Condensed Consolidated Stateme6

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Operating activities:
Net income	$ 57,562	$ 32,514
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	15,897	13,977
Amortization	11,669	10,945
Share-based compensation expense	4,128	3,870
Provision for deferred income taxes	(721)	3,422
Other	1,503	3,633
Changes in operating assets and liabilities:
Trade accounts and notes receivable	(6,011)	(7,546)
Inventories	(14,955)	(5,415)
Accounts payable and accrued liabilities	(33,985)	(23,490)
Other current assets	(682)	5,061
Income taxes payable and refundable income taxes	6,692	(1,252)
Other	(2,280)	(2,287)
Net cash provided by operating activities	38,817	33,432
Investing activities:
Acquisition of property, plant and equipment	(21,047)	(22,190)
Acquisition of business	(37,656)	0
Other	146	186
Net cash used in investing activities	(58,557)	(22,004)
Financing activities:
Payments of long-term debt	(25,000)	(25,000)
Payments for dividends	(9,883)	0
Issuance of common stock	473	1,041
Repurchase and retirement of common stock	(10,000)	(4,000)
Taxes paid related to net share settlement of equity awards	(14,123)	(4,575)
Other	(246)	(270)
Net cash used in financing activities	(58,779)	(32,804)
Effect of exchange rate changes on cash and cash equivalents	3,347	6,146
Decrease in cash and cash equivalents	(75,172)	(15,230)
Cash and cash equivalents at beginning of period	625,408	406,389
Cash and cash equivalents at end of period	550,236	391,159
Schedule of interest and taxes paid
Interest paid	8,000	2,029
Income taxes paid, net of refunds received	$ 8,031	$ 7,132

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations Entegris, Inc. (“Entegris”, “the Company”, “us”, “we”, or “our”) is a leading global developer, manufacturer and supplier of microcontamination control products, specialty chemicals and advanced materials handling solutions for manufacturing processes in the semiconductor and other high-technology industries. Principles of Consolidation The condensed 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 The preparation of condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, particularly receivables, inventories, property, plant and equipment, goodwill, intangibles, accrued expenses, and income taxes and related accounts, and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Basis of Presentation The condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States and contain all adjustments considered necessary, and are of a normal recurring nature, to present fairly the financial position as of March 31, 2018 and December 31, 2017 , and the results of operations, comprehensive income and cash flows for the three months ended March 31, 2018 and April 1, 2017 . The condensed consolidated financial statements and accompanying notes are presented as permitted by Form 10-Q and do not contain certain information included in the Company’s annual consolidated financial statements and notes. The information included in this Form 10-Q should be read in conjunction with Management’s Discussion and Analysis and consolidated financial statements and notes thereto included in the Company’s Form 10-K for the year ended December 31, 2017 . The results of operations for the three months ended March 31, 2018 are not necessarily indicative of the results to be expected for the full year. 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 items. The fair value of long-term debt, including current maturities, was $637.3 million at March 31, 2018 , compared to the carrying amount of long-term debt, including current maturities, of $649.8 million . Revenue Recognition Revenue is measured based on consideration specified in a contract with a customer, and excludes any sales incentives and amounts collected on behalf of third parties. The Company recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by the Company from a customer, are excluded from revenue. Shipping and handling costs associated with outbound freight after control over a product has transferred to a customer are accounted for as a fulfillment cost and are included in cost of goods sold. Recent Accounting Pronouncements Adopted in 2018 In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-09 Revenue from Contracts with Customers . ASU No. 2014-09 supersedes previous revenue recognition requirements and requires entities to recognize revenue when control of the promised goods or services is transferred to customers at an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. The Company adopted the provisions of ASU No. 2014-09 as of January 1, 2018 using the modified retrospective transition method. See note 2 to the condensed consolidated financial statements for further details. Recent Accounting Pronouncements Yet to be Adopted In February 2016, the FASB issued ASU No. 2016-02, Leases . 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.

Revenues (Notes)

Revenues (Notes)	3 Months Ended
	Mar. 31, 2018
Revenues [Abstract]
Revenue from Contract with Customer [Text Block]	REVENUES Adoption of ASC ASU No. 2014-09, Revenue from Contracts with Customers On January 1, 2018, the Company adopted ASU No. 2014-09 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under the provisions of ASU No. 2014-09, while prior period amounts are not adjusted and continue to be reported in accordance with previous accounting guidance. The Company adopted ASU No. 2014-09 with a date of initial application of January 1, 2018. As a result, the Company changed its accounting policy for revenue recognition for two items as detailed below. The first change concerns transactions where the Company offers customers incentives in the form of free products. The new revenue standard requires that a portion of the transaction price be allocated to the free product and deferred until the product has been delivered. The Company previously accrued for undelivered free product as a charge to cost of goods sold. The second change concerns revenue recognition involving certain shipping terms that included freight and export costs. Under the new revenue standard, the Company recognizes revenue at the point at which products are delivered to a particular port or loaded onto a vessel and control has transferred, whereas prior to the date of initial application of ASU No. 2014-09, revenue recognition was previously deferred for those sales until they reached their destination. The Company adopted ASU No. 2014-09 using the modified retrospective method, recognizing the cumulative effect of application as an adjustment to the opening balance of equity at January 1, 2018. Therefore, prior year information has not been adjusted and continues to be reported under previous applicable guidance. The details of the impact of the changes made to the Company's balance sheet date as of January 1, 2018 are reflected in the following table. ( In thousands ) Increase (decrease) Trade accounts and note receivable $765 Inventory (223) Other accrued liabilities 1,276 Deferred tax liabilities and other noncurrent tax liabilities (144) Retained earnings (590) Based on an analysis of the financial statement line items affected in the quarter ended March 31, 2018 in the application of ASU No. 2014-09 as compared with previous reporting, the Company has determined that the quantitative changes to each financial statement line item are immaterial. As a result, for the quarter ended March 31, 2018, the Company is not disclosing the quantitative amount by which each financial statement line item is affected in the current reporting by the application of Topic 606 as compared with the guidance that was in effect before the change. As part of its adoption of ASU No. 2014-09 in the first quarter of 2018, the Company elected to use the allowed practical expedient, pursuant to which it has excluded disclosures of transaction prices allocated to remaining performance obligations and when it expects to recognize such revenue for all periods prior to the date of initial application of ASU No. 2014-09. Revenue Recognition Revenue is measured based on consideration specified in a contract with a customer, and excludes any sales incentives and amounts collected on behalf of third parties. The Company recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by the Company from a customer, are excluded from revenue. Shipping and handling costs associated with outbound freight after control over a product has transferred to a customer are accounted for as a fulfillment cost and are included in cost of goods sold. The Company recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that the Company otherwise would have recognized is one year or less. When the Company receives consideration, or such consideration is unconditionally due, from a customer prior to transferring goods or services to the customer under the terms of a sales contract, the Company records deferred revenue, which represents a contract liability. Such deferred revenue typically results from advance payments received on sales of the Company’s products. The deferred revenue balance at quarter end is deemed immaterial and, accordingly, the Company does not make the required disclosures. The Company does not disclose information about remaining performance obligations that have original expected durations of one year or less. Nature of goods and services The following is a description of principal activities from which the Company generates its revenues. The Company has three reportable segments. For more detailed information about reportable segments, see note 9 to the condensed consolidated financial statements. For each of the three reportable segments, the recognition of revenue regarding the nature of goods and services provided by the segments are similar and described below. The Company recognizes revenue product sales at a point in time following the transfer of control of such products to the customer, which generally occurs upon shipment, or delivery depending on the terms of the underlying contracts. For product sales contracts that contain multiple performance obligations, the Company allocates the transaction price to each performance obligation identified in the contract based on relative standalone selling prices, or estimates of such prices, and recognize the related revenue as control of each individual product is transferred to the customer, in satisfaction of the corresponding performance obligations. The Company generally recognizes revenue for sales of services over time at which the Company has satisfied the performance obligation. The Company also enters into arrangements to license its intellectual property. These arrangements typically permit the customer to use a specialized manufacturing process and in return the Company receives a royalty fee. If applicable, the Company recognizes revenue when the subsequent sale or usage occurs. The Company offers certain customers cash discounts and volume rebates as sales incentives. The discounts and volume rebates are recorded as a reduction in sales at the time revenue is recognized in an amount estimated based on historical experience and contractual obligations. The Company periodically reviews the assumptions underlying its estimates of discounts and volume rebates and adjusts its revenues accordingly. In addition, the Company offers free product rebates to certain customers. The Company utilizes an adjusted market approach to estimate the stand-alone selling price of the loyalty program and allocates a portion of the consideration received to the free product offering. The free product offering is redeemable upon future purchases of the Company’s products. The amount associated with free product rebates is deferred in the balance sheet and is recognized as revenue when the free product is redeemed or when the likelihood of redemption is remote. The Company deems the amount immaterial for disclosure. The Company applies the practical expedient in ASU No. 2014-09 and does not disclose information about remaining performance obligations that have original expected durations of one year or less. The Company provides for the estimated costs of fulfilling our obligations under product warranties at the time the related revenue is recognized. The Company estimates the costs based on historical failure rates, projected repair costs, and knowledge of specific product failures (if any). The specific warranty terms and conditions vary depending upon the product sold and the country in which we do business, but generally include parts and labor over a period generally ranging from 90 days to one year. The Company regularly reevaluates its estimates to assess the adequacy of the recorded warranty liabilities and adjust the amounts as necessary. The Company’s contracts are generally short-term in nature. Most contracts do not exceed twelve months. Payment terms vary by the type and location of the Company’s customers and the products or services offered. The term between invoicing and when payment is due is not significant. For certain products or services and customer types, the Company requires payment before the products or services are delivered to the customer.

Acquisition (Notes)

Acquisition (Notes)	3 Months Ended
	Mar. 31, 2018
Business Acquisition [Line Items]
Business Combination Disclosure [Text Block]	ACQUISITION On January 22, 2018 , the Company acquired Particle Sizing Systems, LLC(PSS), which provides particle sizing instrumentation for liquid applications to the semiconductor and life science industries. The acquired assets and assumed liabilities became part of the Company’s Advanced Materials Handling (AMH) segment. The transaction was accounted for under the acquisition method of accounting and the results of operations of PSS are included in the Company's consolidated financial statements since January 22, 2018 . The acquisition does not constitute a material business combination. The purchase price for PSS was cash consideration of $37.7 million , subject to revision for customary working capital adjustments, funded from the Company's existing cash on hand. Costs associated with the acquisition of the product line were not significant and were expensed as incurred. The purchase price of PSS exceeds the net of the acquisition-date amounts of the identifiable assets acquired and the liabilities assumed by $15.4 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. This additional investment value resulted in goodwill, which is expected to be deductible for income tax purposes. The following table summarizes the preliminary allocation of the purchase price to the fair values assigned to the assets acquired and liabilities assumed at the date of acquisition: (In thousands): Amount Accounts receivable $ 3,616 Inventory 1,889 Other current assets 14 Other assets 21 Identifiable intangible assets 20,000 Accounts payables (438 ) Accrued expenses (2,799 ) Net assets acquired 22,303 Goodwill 15,353 Total purchase price $ 37,656 As of March 31, 2018, the Company has not finalized its fair value determinations of the assets acquired and liabilities assumed. The preliminary valuation of the assets acquired and liabilities assumed was 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. The valuation of the acquired assets and liabilities assumed is currently being reviewed, with the expectation of completion in the second quarter. Intangible assets, consisting mostly of technology-related intellectual property, generally will be amortized on a straight-line basis over an expected useful life currently estimated at approximately 6.8 years. In performing the valuation of intangible assets, the Company used independent appraisals, discounted cash flows and other other factors, as the best evidence of fair value. The key underlying assumptions of the discounted cash flows were projected revenues, gross margin expectations and operating cost estimates. There are inherent uncertainties and management judgment required in these determinations. No assurance can be given that the underlying assumptions will occur as projected. The fair value measurement of the assets acquired and liabilities assumed were based on valuation involving significant unobservable inputs, or Level 3 in the fair value hierarchy.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2018
Inventory Disclosure [Abstract]
Inventories	INVENTORIES Inventories consist of the following: (In thousands) March 31, 2018 December 31, 2017 Raw materials $ 62,429 $ 58,226 Work-in process 20,717 16,193 Finished goods 130,999 123,670 Total inventories $ 214,145 $ 198,089

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2018
Intangible Assets	GOODWILL AND INTANGIBLE ASSETS Goodwill activity for each period was as follows: (In thousands) Specialty Chemicals and Engineered Materials Micro-contamination Control Advanced Materials Handling Total December 31, 2017 $ 304,270 8,007 $ 47,411 $ 359,688 Addition due to acquisition — — 15,353 15,353 Foreign currency translation 299 — — 299 March 31, 2018 $ 304,569 $ 8,007 $ 62,764 $ 375,340 Identifiable intangible assets at March 31, 2018 and December 31, 2017 consist of the following: March 31, 2018 (In thousands) Gross carrying Amount Accumulated amortization Net carrying value Developed technology $ 223,237 $ 155,782 $ 67,455 Trademarks and trade names 18,816 13,947 4,869 Customer relationships 221,993 115,051 106,942 Other 20,033 8,485 11,548 $ 484,079 $ 293,265 $ 190,814 December 31, 2017 (In thousands) Gross carrying amount Accumulated amortization Net carrying value Developed technology $ 206,224 $ 149,215 $ 57,009 Trademarks and trade names 16,807 13,712 3,095 Customer relationships 220,806 110,281 110,525 Other 20,032 8,231 11,801 $ 463,869 $ 281,439 $ 182,430 Future 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 at March 31, 2018 to be the following: Fiscal year ending December 31 (In thousands) 2018 $ 35,712 2019 44,760 2020 30,251 2021 23,589 2022 23,444 Thereafter 33,058 $ 190,814

Income Tax (Notes)

Income Tax (Notes)	3 Months Ended
	Mar. 31, 2018
Income Tax [Abstract]
Income Tax Disclosure [Text Block]	INCOME TAX Income tax expense differs from the expected amounts based on the statutory federal tax rates for the three months ended March 31, 2018 and April 1, 2017 as follows: Three months ended (In thousands) March 31, 2018 April 1, 2017 Expected federal income tax expense at statutory rate $ 14,933 $ 14,569 State income taxes before valuation allowance, net of federal tax effect 495 50 Effect of foreign source income 1,797 (3,372 ) Tax contingencies 768 129 Valuation allowance 641 481 U.S. federal research credit (900 ) (599 ) Equity compensation (5,564 ) (2,295 ) Global intangible low tax income 1,114 — Other items, net 262 148 Income tax expense $ 13,546 $ 9,111 The Company’s year-to-date effective tax rate was 19.0% in 2018, compared to an effective tax rate of 21.9% during the same period in 2017. This variance reflects the benefit from the reduction in the corporate tax rate from 35% to 21% which was offset by the global intangible low tax income inclusion and various discrete items. The effective tax rate in 2017 reflects a greater concentration in the Company's geographic composition of income toward jurisdictions with lower tax rates. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act of 2017 (the "Tax Cuts and Jobs Act") which makes broad and complex changes to the U.S. tax code. The Company calculated its best estimate of the impact of the Tax Cuts and Jobs Act in its 2017 year-end income tax provision in accordance with its understanding of the Tax Cuts and Jobs Act and guidance available as of the date of the filing. During the fourth quarter of fiscal 2017, the Company recorded a provisional net charge using reasonable estimates based on analysis and information available to date for the tax effects related to the remeasurement of deferred taxes, the deemed repatriation transition tax, accelerated depreciation, and the deductibility of certain executive compensation. This provisional net charge is subject to revisions as the Company completes its analysis of the Tax Cuts and Jobs Act, collects and prepares necessary data, and interprets any additional guidance issued by the U.S. Treasury Department, Internal Revenue Service, Financial Accounting Standards Board, and other standard setting and regulatory bodies. Adjustments may materially impact the provision for income taxes and effective tax rate in the period in which the adjustments are made. As of March 31, 2018, the Company has not finalized its accounting for the tax effects of these items. The Company expects to complete its analysis of these provisional items when the necessary information becomes available to accurately analyze and compute in reasonable detail under ASC Topic 740. The Company estimates such analysis will be completed in the second half of 2018. The Tax Cuts and Jobs Act also has provisions that impact the Company’s 2018 results, most notably a reduction in the corporate income tax rate from 35% to 21% for tax years beginning after December 31, 2017. The U.S. tax law changes also (1) repeals the deduction for domestic production activities , (2) establishes a global intangible low tax income (GILTI) regime, (3) creates a base erosion anti-avoidance tax (BEAT), (4) establishes new limitations on deductible interest expense and certain executive compensation, (5) eliminates the corporate alternative minimum tax, (6) generally eliminates U.S. federal income taxes on dividends from foreign subsidiaries and (7) changes the rules related to uses and limitations of net operating loss carryforwards created in tax years beginning after December 31, 2017. Global Intangible Low Taxed Income The U.S. tax law changes created new rules that allow the Company to make an accounting policy election to treat taxes due on GILTI inclusions in taxable income as either a current period expense or reflect such inclusions related to temporary basis differences in the Company’s measurement of deferred taxes. The Company has elected to treat the GILTI inclusion as a current period expense. The Company recorded tax expense of $1.1 million related to GILTI in the quarter ended March 31, 2018.

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Common Share	EARNINGS PER COMMON SHARE The following table presents a reconciliation of the denominators used in the computation of basic and diluted earnings per common share (EPS): Three months ended (In thousands) March 31, 2018 April 1, 2017 Basic—weighted common shares outstanding 141,581 141,501 Weighted common shares assumed upon exercise of stock options and vesting of restricted common stock 2,071 1,814 Diluted—weighted common shares and common shares equivalent outstanding 143,652 143,315 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 three months ended March 31, 2018 and April 1, 2017 : Three months ended (In thousands) March 31, 2018 April 1, 2017 Shares excluded from calculations of diluted EPS 159 504

Fair Value

Fair Value	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value	FAIR VALUE Financial Assets Measured at Fair Value on a Recurring Basis The following table presents the Company’s financial assets that are measured at fair value on a recurring basis at March 31, 2018 and December 31, 2017 . Level 1 inputs are based on quoted prices in active markets accessible at the reporting date for identical assets and liabilities. Level 2 inputs are based on quoted prices for similar instruments in active markets and quoted prices for identical or similar instruments in markets that are not active, or model-based valuation techniques for which all significant assumptions are observable in a market. Level 3 inputs are based on prices or valuations that require inputs that are significant to the valuation and are unobservable. March 31, 2018 December 31, 2017 (In thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Other current assets Foreign currency contracts (a) $ — $ — $ — $ — $ — $ 36 $ — $ 36 Total assets measured and recorded at fair value $ — $ — $ — $ — $ — $ 36 $ — $ 36 Liabilities: Other accrued liabilities Foreign currency contracts (a) $ — $ 1,914 $ — $ 1,914 $ — $ — $ — $ — Total liabilities measured and recorded at fair value $ — $ 1,914 $ — $ 1,914 $ — $ — $ — $ — (a) Based on observable market transactions of spot currency rates and forward currency rates on equivalently-termed instruments. A reconciliation of the net fair value of foreign currency contract assets and liabilities subject to master netting arrangements that are recorded in the March 31, 2018 and December 31, 2017 condensed consolidated balance sheets to the net fair value that could have been reported in the respective condensed consolidated balance sheets is as follows: March 31, 2018 December 31, 2017 (In thousands) Gross Gross Net amount of Gross amounts of recognized assets Gross amounts offset in the condensed consolidated balance sheet Net amount of assets in the condensed consolidated balance sheet Foreign currency contracts $ 1,914 $ — $ 1,914 $ 36 $ — $ 36 Losses associated with derivatives are recorded in other expense, net, in the condensed consolidated statements of operations. Losses associated with derivative instruments not designated as hedging instruments were as follows: Three months ended (In thousands) March 31, 2018 April 1, 2017 Losses on foreign currency contracts $ (1,914 ) $ (2,297 )

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Segment Reporting	SEGMENT REPORTING The Company's financial segment reporting reflects an organizational alignment intended to leverage the Company's 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 global generalist sales force, common business systems and processes, technology centers, and strategic and technology roadmaps. 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. • Microcontamination Control (MC): MC solutions purify critical liquid chemistries and gases used in semiconductor manufacturing processes and other high-technology industries. • 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. Inter-segment sales are not significant. In the first quarter of 2018, the Company has changed its definition of segment profit. Segment profit is now defined as net sales less direct and indirect segment operating expenses, including certain general and administrative costs for the Company’s human resources, finance and information technology functions previously unallocated by the Company. The remaining unallocated expenses consist mainly the Company's corporate functions as well as interest expense, amortization of intangible assets and income tax expense. Prior quarter information was recast to reflect the change in the Company's definition of segment profit. Summarized financial information for the Company’s reportable segments is shown in the following tables. Three months ended (In thousands) March 31, 2018 April 1, 2017 Net sales SCEM $ 130,743 $ 114,435 MC 118,637 100,055 AMH 117,819 102,887 Total net sales $ 367,199 $ 317,377 Three months ended (In thousands) March 31, 2018 April 1, 2017 Segment profit SCEM $ 31,562 $ 23,128 MC 41,991 30,987 AMH 23,142 13,960 Total segment profit $ 96,695 $ 68,075 The following table reconciles total segment profit to income before income taxes: Three months ended (In thousands) March 31, 2018 April 1, 2017 Total segment profit $ 96,695 $ 68,075 Less: Amortization of intangible assets 11,669 10,945 Unallocated general and administrative expenses 6,553 6,210 Operating income 78,473 50,920 Interest expense 8,159 8,473 Interest income (933 ) (80 ) Other expense, net 139 902 Income before income tax expense $ 71,108 $ 41,625 In the following tables, revenue is disaggregated by country or region for the three months ended March 31, 2018 and April 1, 2017. (In thousands) Three months ended March 31, 2018 SCEM MC AMH Total Taiwan $ 27,642 $ 22,532 $ 14,917 $ 65,091 United States 32,401 20,775 33,089 86,265 South Korea 20,327 19,823 22,588 62,738 Japan 14,506 25,992 11,032 51,530 China 14,980 13,304 12,211 40,495 Europe 7,796 9,684 15,407 32,887 Southeast Asia 13,091 6,527 8,575 28,193 $ 130,743 $ 118,637 $ 117,819 $ 367,199 (In thousands) Three months ended April 1, 2017 SCEM MC AMH Total Taiwan $ 27,447 $ 32,194 $ 18,491 $ 78,132 United States 28,618 15,270 21,901 65,789 South Korea 17,781 13,344 16,198 47,323 Japan 7,992 18,132 9,320 35,444 China 13,419 8,169 7,597 29,185 Europe 8,012 7,373 15,562 30,947 Southeast Asia 11,166 5,573 13,818 30,557 $ 114,435 $ 100,055 $ 102,887 $ 317,377

Summary of Significant Accoun16

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2018
Nature of Operations	Nature of Operations Entegris, Inc. (“Entegris”, “the Company”, “us”, “we”, or “our”)
Principles of Consolidation	Principles of Consolidation The condensed 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 The preparation of condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, particularly receivables, inventories, property, plant and equipment, goodwill, intangibles, accrued expenses, and income taxes and related accounts, and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Basis of Presentation	Basis of Presentation The condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States and contain all adjustments considered necessary, and are of a normal recurring nature, to present fairly the financial position as of March 31, 2018 and December 31, 2017 , and the results of operations, comprehensive income and cash flows for the three months ended March 31, 2018 and April 1, 2017 . The condensed consolidated financial statements and accompanying notes are presented as permitted by Form 10-Q and do not contain certain information included in the Company’s annual consolidated financial statements and notes. The information included in this Form 10-Q should be read in conjunction with Management’s Discussion and Analysis and consolidated financial statements and notes thereto included in the Company’s Form 10-K for the year ended December 31, 2017 . The results of operations for the three months ended March 31, 2018 are not necessarily indicative of the results to be expected for the full year.
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 items. The fair value of long-term debt, including current maturities, was $637.3 million at March 31, 2018 , compared to the carrying amount of long-term debt, including current maturities, of $649.8 million .
Revenue Recognition	Revenue Recognition Revenue is measured based on consideration specified in a contract with a customer, and excludes any sales incentives and amounts collected on behalf of third parties. The Company recognizes revenue when it satisfies a performance obligation by transferring control over a product or service to a customer. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, that are collected by the Company from a customer, are excluded from revenue. Shipping and handling costs associated with outbound freight after control over a product has transferred to a customer are accounted for as a fulfillment cost and are included in cost of goods sold.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Adopted in 2018 In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-09 Revenue from Contracts with Customers . ASU No. 2014-09 supersedes previous revenue recognition requirements and requires entities to recognize revenue when control of the promised goods or services is transferred to customers at an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. The Company adopted the provisions of ASU No. 2014-09 as of January 1, 2018 using the modified retrospective transition method. See note 2 to the condensed consolidated financial statements for further details. Recent Accounting Pronouncements Yet to be Adopted In February 2016, the FASB issued ASU No. 2016-02, Leases . 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.

Revenues (Tables)

Revenues (Tables)	3 Months Ended
	Mar. 31, 2018
Revenues [Abstract]
Revenue, Initial Application Period Cumulative Effect Transition [Table Text Block]	The Company adopted ASU No. 2014-09 using the modified retrospective method, recognizing the cumulative effect of application as an adjustment to the opening balance of equity at January 1, 2018. Therefore, prior year information has not been adjusted and continues to be reported under previous applicable guidance. The details of the impact of the changes made to the Company's balance sheet date as of January 1, 2018 are reflected in the following table. ( In thousands ) Increase (decrease) Trade accounts and note receivable $765 Inventory (223) Other accrued liabilities 1,276 Deferred tax liabilities and other noncurrent tax liabilities (144) Retained earnings (590)

Acquisition (Tables)

Acquisition (Tables)	3 Months Ended
	Mar. 31, 2018
Business Acquisition [Line Items]
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	The following table summarizes the preliminary allocation of the purchase price to the fair values assigned to the assets acquired and liabilities assumed at the date of acquisition: (In thousands): Amount Accounts receivable $ 3,616 Inventory 1,889 Other current assets 14 Other assets 21 Identifiable intangible assets 20,000 Accounts payables (438 ) Accrued expenses (2,799 ) Net assets acquired 22,303 Goodwill 15,353 Total purchase price $ 37,656

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 31, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories consist of the following: (In thousands) March 31, 2018 December 31, 2017 Raw materials $ 62,429 $ 58,226 Work-in process 20,717 16,193 Finished goods 130,999 123,670 Total inventories $ 214,145 $ 198,089

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2018
Schedule of Goodwill	Goodwill activity for each period was as follows: (In thousands) Specialty Chemicals and Engineered Materials Micro-contamination Control Advanced Materials Handling Total December 31, 2017 $ 304,270 8,007 $ 47,411 $ 359,688 Addition due to acquisition — — 15,353 15,353 Foreign currency translation 299 — — 299 March 31, 2018 $ 304,569 $ 8,007 $ 62,764 $ 375,340
Schedule of Acquired Finite-Lived Intangible Assets by Major Class	Identifiable intangible assets at March 31, 2018 and December 31, 2017 consist of the following: March 31, 2018 (In thousands) Gross carrying Amount Accumulated amortization Net carrying value Developed technology $ 223,237 $ 155,782 $ 67,455 Trademarks and trade names 18,816 13,947 4,869 Customer relationships 221,993 115,051 106,942 Other 20,033 8,485 11,548 $ 484,079 $ 293,265 $ 190,814 December 31, 2017 (In thousands) Gross carrying amount Accumulated amortization Net carrying value Developed technology $ 206,224 $ 149,215 $ 57,009 Trademarks and trade names 16,807 13,712 3,095 Customer relationships 220,806 110,281 110,525 Other 20,032 8,231 11,801 $ 463,869 $ 281,439 $ 182,430
Estimated Future Amortization Expense	Future 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 at March 31, 2018 to be the following: Fiscal year ending December 31 (In thousands) 2018 $ 35,712 2019 44,760 2020 30,251 2021 23,589 2022 23,444 Thereafter 33,058 $ 190,814

Income Tax (Tables)

Income Tax (Tables)	3 Months Ended
	Mar. 31, 2018
Income Tax [Abstract]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Income tax expense differs from the expected amounts based on the statutory federal tax rates for the three months ended March 31, 2018 and April 1, 2017 as follows: Three months ended (In thousands) March 31, 2018 April 1, 2017 Expected federal income tax expense at statutory rate $ 14,933 $ 14,569 State income taxes before valuation allowance, net of federal tax effect 495 50 Effect of foreign source income 1,797 (3,372 ) Tax contingencies 768 129 Valuation allowance 641 481 U.S. federal research credit (900 ) (599 ) Equity compensation (5,564 ) (2,295 ) Global intangible low tax income 1,114 — Other items, net 262 148 Income tax expense $ 13,546 $ 9,111

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2018
Reconcilation of Share Amount Used in Computaion of Basic and Diluted Earnings Per Share (EPS)	The following table presents a reconciliation of the denominators used in the computation of basic and diluted earnings per common share (EPS): Three months ended (In thousands) March 31, 2018 April 1, 2017 Basic—weighted common shares outstanding 141,581 141,501 Weighted common shares assumed upon exercise of stock options and vesting of restricted common stock 2,071 1,814 Diluted—weighted common shares and common shares equivalent outstanding 143,652 143,315
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 three months ended March 31, 2018 and April 1, 2017 : Three months ended (In thousands) March 31, 2018 April 1, 2017 Shares excluded from calculations of diluted EPS 159 504

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2018
Financial Assets Measured At Fair Value On Recurring Basis	The following table presents the Company’s financial assets that are measured at fair value on a recurring basis at March 31, 2018 and December 31, 2017 . Level 1 inputs are based on quoted prices in active markets accessible at the reporting date for identical assets and liabilities. Level 2 inputs are based on quoted prices for similar instruments in active markets and quoted prices for identical or similar instruments in markets that are not active, or model-based valuation techniques for which all significant assumptions are observable in a market. Level 3 inputs are based on prices or valuations that require inputs that are significant to the valuation and are unobservable. March 31, 2018 December 31, 2017 (In thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Other current assets Foreign currency contracts (a) $ — $ — $ — $ — $ — $ 36 $ — $ 36 Total assets measured and recorded at fair value $ — $ — $ — $ — $ — $ 36 $ — $ 36 Liabilities: Other accrued liabilities Foreign currency contracts (a) $ — $ 1,914 $ — $ 1,914 $ — $ — $ — $ — Total liabilities measured and recorded at fair value $ — $ 1,914 $ — $ 1,914 $ — $ — $ — $ — (a) Based on observable market transactions of spot currency rates and forward currency rates on equivalently-termed instruments.
Information about Derivative Positions	A reconciliation of the net fair value of foreign currency contract assets and liabilities subject to master netting arrangements that are recorded in the March 31, 2018 and December 31, 2017 condensed consolidated balance sheets to the net fair value that could have been reported in the respective condensed consolidated balance sheets is as follows: March 31, 2018 December 31, 2017 (In thousands) Gross Gross Net amount of Gross amounts of recognized assets Gross amounts offset in the condensed consolidated balance sheet Net amount of assets in the condensed consolidated balance sheet Foreign currency contracts $ 1,914 $ — $ 1,914 $ 36 $ — $ 36
Gains and (losses) associated with derivatives	Losses associated with derivatives are recorded in other expense, net, in the condensed consolidated statements of operations. Losses associated with derivative instruments not designated as hedging instruments were as follows: Three months ended (In thousands) March 31, 2018 April 1, 2017 Losses on foreign currency contracts $ (1,914 ) $ (2,297 )

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2018
Summary of Financial Information for Reportable Segments	Summarized financial information for the Company’s reportable segments is shown in the following tables. Three months ended (In thousands) March 31, 2018 April 1, 2017 Net sales SCEM $ 130,743 $ 114,435 MC 118,637 100,055 AMH 117,819 102,887 Total net sales $ 367,199 $ 317,377 Three months ended (In thousands) March 31, 2018 April 1, 2017 Segment profit SCEM $ 31,562 $ 23,128 MC 41,991 30,987 AMH 23,142 13,960 Total segment profit $ 96,695 $ 68,075
Reconciliation of Total Segment Profit to Operating Income	The following table reconciles total segment profit to income before income taxes: Three months ended (In thousands) March 31, 2018 April 1, 2017 Total segment profit $ 96,695 $ 68,075 Less: Amortization of intangible assets 11,669 10,945 Unallocated general and administrative expenses 6,553 6,210 Operating income 78,473 50,920 Interest expense 8,159 8,473 Interest income (933 ) (80 ) Other expense, net 139 902 Income before income tax expense $ 71,108 $ 41,625
Schedule of Revenue from External Customers, by Geographical Areas [Table Text Block]	In the following tables, revenue is disaggregated by country or region for the three months ended March 31, 2018 and April 1, 2017. (In thousands) Three months ended March 31, 2018 SCEM MC AMH Total Taiwan $ 27,642 $ 22,532 $ 14,917 $ 65,091 United States 32,401 20,775 33,089 86,265 South Korea 20,327 19,823 22,588 62,738 Japan 14,506 25,992 11,032 51,530 China 14,980 13,304 12,211 40,495 Europe 7,796 9,684 15,407 32,887 Southeast Asia 13,091 6,527 8,575 28,193 $ 130,743 $ 118,637 $ 117,819 $ 367,199 (In thousands) Three months ended April 1, 2017 SCEM MC AMH Total Taiwan $ 27,447 $ 32,194 $ 18,491 $ 78,132 United States 28,618 15,270 21,901 65,789 South Korea 17,781 13,344 16,198 47,323 Japan 7,992 18,132 9,320 35,444 China 13,419 8,169 7,597 29,185 Europe 8,012 7,373 15,562 30,947 Southeast Asia 11,166 5,573 13,818 30,557 $ 114,435 $ 100,055 $ 102,887 $ 317,377 In the following tables, revenue is disaggregated by country or region for the three months ended March 31, 2018 and April 1, 2017. (In thousands) Three months ended March 31, 2018 SCEM MC AMH Total Taiwan $ 27,642 $ 22,532 $ 14,917 $ 65,091 United States 32,401 20,775 33,089 86,265 South Korea 20,327 19,823 22,588 62,738 Japan 14,506 25,992 11,032 51,530 China 14,980 13,304 12,211 40,495 Europe 7,796 9,684 15,407 32,887 Southeast Asia 13,091 6,527 8,575 28,193 $ 130,743 $ 118,637 $ 117,819 $ 367,199 (In thousands) Three months ended April 1, 2017 SCEM MC AMH Total Taiwan $ 27,447 $ 32,194 $ 18,491 $ 78,132 United States 28,618 15,270 21,901 65,789 South Korea 17,781 13,344 16,198 47,323 Japan 7,992 18,132 9,320 35,444 China 13,419 8,169 7,597 29,185 Europe 8,012 7,373 15,562 30,947 Southeast Asia 11,166 5,573 13,818 30,557 $ 114,435 $ 100,055 $ 102,887 $ 317,377

Summary of Significant Accoun25

Summary of Significant Accounting Policies Additional details (Details) $ in Thousands	Mar. 31, 2018USD ($)
Accounting Policies [Abstract]
Long-term Debt, Fair Value	$ 637,304
Long-term Debt	$ 649,821

Revenues (Details)

Revenues (Details) $ in Thousands	Jan. 01, 2018USD ($)
Accounts Receivable [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 765
Inventories [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	(223)
Accrued Liabilities [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	1,276
Deferred tax liability [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	(144)
Retained Earnings [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ (590)

Acquisition Purchase Price Allo

Acquisition Purchase Price Allocation (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 22, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill	$ 375,340		$ 359,688
PSS acquisition member [Member]
Business Acquisition [Line Items]
Accounts Receivables		$ 3,616
Inventory		1,889
Other current assets		14
Other assets		21
Identifiable Intangible Assets		20,000
Accounts Payable		(438)
Accrued Expenses		(2,799)
Net Assets Acquired		22,303
Goodwill		15,353
Total Purchase Price		$ 37,656

Acquisition Additional Acquisit

Acquisition Additional Acquisition (Details) - USD ($) $ in Thousands	Jan. 22, 2018	Mar. 31, 2018	Apr. 01, 2017	Dec. 31, 2017
Business Acquisition [Line Items]
Total Purchase Price		$ 37,656	$ 0
Goodwill		$ 375,340		$ 359,688
PSS acquisition member [Member]
Business Acquisition [Line Items]
Business Acquisition, Date of Acquisition Agreement	Jan. 22, 2018
Total Purchase Price	$ 37,656
Goodwill	$ 15,353
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 years 9 months

Inventories (Detail)

Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 62,429	$ 58,226
Work-in process	20,717	16,193
Finished goods	130,999	123,670
Total inventories	$ 214,145	$ 198,089

Goodwill Rollforward (Details)

Goodwill Rollforward (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Goodwill [Line Items]
Goodwill - Beginning	$ 359,688
Addition due to acquisition	15,353
Foreign currency translation	299
Goodwill - End	375,340
Specialty Chemicals and Electronic Materials SCEM [Member]
Goodwill [Line Items]
Goodwill - Beginning	304,270
Addition due to acquisition	0
Foreign currency translation	299
Goodwill - End	304,569
Microcontamination Control [Member]
Goodwill [Line Items]
Goodwill - Beginning	8,007
Addition due to acquisition	0
Foreign currency translation	0
Goodwill - End	8,007
Advanced Materials Handling AMH [Member]
Goodwill [Line Items]
Goodwill - Beginning	47,411
Addition due to acquisition	15,353
Foreign currency translation	0
Goodwill - End	$ 62,764

Intangible Assets (Detail)

Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets
Gross carrying Amount	$ 484,079	$ 463,869
Accumulated amortization	293,265	281,439
Net carrying value	190,814	182,430
Developed Technology
Finite-Lived Intangible Assets
Gross carrying Amount	223,237	206,224
Accumulated amortization	155,782	149,215
Net carrying value	67,455	57,009
Trademarks and Trade names
Finite-Lived Intangible Assets
Gross carrying Amount	18,816	16,807
Accumulated amortization	13,947	13,712
Net carrying value	4,869	3,095
Customer Relationships
Finite-Lived Intangible Assets
Gross carrying Amount	221,993	220,806
Accumulated amortization	115,051	110,281
Net carrying value	106,942	110,525
Other
Finite-Lived Intangible Assets
Gross carrying Amount	20,033	20,032
Accumulated amortization	8,485	8,231
Net carrying value	$ 11,548	$ 11,801

Goodwill and Intangible Asset32

Goodwill and Intangible Assets Estimated Future Amortization Expense (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets
2,018	$ 35,712
2,019	44,760
2,020	30,251
2,021	23,589
2,022	23,444
Thereafter	33,058
Intangible assets, net	$ 190,814	$ 182,430

Income Tax Rate reconciliation

Income Tax Rate reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Income Tax [Abstract]
Expected federal income tax expense at statutory rate	$ 14,933	$ 14,569
State income taxes before valuation allowance, net of federal tax effect	495	50
Effect of foreign source income	1,797	(3,372)
Tax contingencies	768	129
Valuation allowance	641	481
U.S. federal research credit	(900)	(599)
Equity compensation	(5,564)	(2,295)
Global Intangible Low Tax Income	1,114	0
Other items, net	262	148
Income tax expense	$ 13,546	$ 9,111

Income Tax Additional Details (

Income Tax Additional Details (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Percent	19.00%	21.90%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	35.00%
Global Intangible Low Tax Income	$ 1,114	$ 0

Reconciliation of Share Amount

Reconciliation of Share Amount Used in Computation of Basic and Diluted Earnings Per Share (EPS) (Detail) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Weighted shares outstanding:
Basic-weighted common shares outstanding	141,581	141,501
Weighted common shares assumed upon exercise of stock options and vesting of restricted common stock	2,071	1,814
Diluted-weighted common shares and common shares equivalent outstanding	143,652	143,315

Shares Excluded Underlying Stoc

Shares Excluded Underlying Stock Based Award from Calucations of Diluted EPS (Detail) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from calculations of diluted EPS	159	504

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, asset		$ 36
Total assets measured and recorded at fair value	$ 0	36
Foreign currency contracts, liabilities	1,914
Total liabilities measured and recorded at fair value	1,914	0
Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, asset	0	36
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	0	0
Total liabilities measured and recorded at fair value	0	0
Fair Value, Inputs, Level 1 | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, asset	0	0
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	0	36
Total liabilities measured and recorded at fair value	1,914	0
Fair Value, Inputs, Level 2 | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, asset	0	36
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	0	0
Total liabilities measured and recorded at fair value	0	0
Fair Value, Inputs, Level 3 | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, asset	0	0
Other Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, liabilities	1,914	0
Other Accrued Liabilities [Member] | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, liabilities	0	0
Other Accrued Liabilities [Member] | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, liabilities	1,914	0
Other Accrued Liabilities [Member] | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, liabilities	$ 0	$ 0

Information about Derivative Po

Information about Derivative Positions (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Gross amounts of recognized liabilities	$ 1,914	$ 0
Gross amounts of recognized assets	0	36
Net amount of liabilities	$ 1,914
Net amount of assets		$ 36

Fair Value Losses associated wi

Fair Value Losses associated with derivatives (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Fair Value Disclosures [Abstract]
Losses on forward currency contracts	$ (1,914)	$ (2,297)

Summary of Financial Informatio

Summary of Financial Information for Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Segment Reporting Information [Line Items]
Net sales	$ 367,199	$ 317,377
Total Segment Profit	96,695	68,075
Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net sales	130,743	114,435
Total Segment Profit	31,562	23,128
Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net sales	118,637	100,055
Total Segment Profit	41,991	30,987
Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net sales	117,819	102,887
Total Segment Profit	23,142	13,960
TAIWAN, PROVINCE OF CHINA
Segment Reporting Information [Line Items]
Net sales	65,091	78,132
TAIWAN, PROVINCE OF CHINA | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net sales	27,642	27,447
TAIWAN, PROVINCE OF CHINA | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net sales	22,532	32,194
TAIWAN, PROVINCE OF CHINA | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net sales	14,917	18,491
UNITED STATES
Segment Reporting Information [Line Items]
Net sales	86,265	65,789
UNITED STATES | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net sales	32,401	28,618
UNITED STATES | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net sales	20,775	15,270
UNITED STATES | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net sales	33,089	21,901
KOREA, REPUBLIC OF
Segment Reporting Information [Line Items]
Net sales	62,738	47,323
KOREA, REPUBLIC OF | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net sales	20,327	17,781
KOREA, REPUBLIC OF | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net sales	19,823	13,344
KOREA, REPUBLIC OF | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net sales	22,588	16,198
JAPAN
Segment Reporting Information [Line Items]
Net sales	51,530	35,444
JAPAN | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net sales	14,506	7,992
JAPAN | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net sales	25,992	18,132
JAPAN | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net sales	11,032	9,320
CHINA
Segment Reporting Information [Line Items]
Net sales	40,495	29,185
CHINA | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net sales	14,980	13,419
CHINA | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net sales	13,304	8,169
CHINA | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net sales	12,211	7,597
Europe [Member]
Segment Reporting Information [Line Items]
Net sales	32,887	30,947
Europe [Member] | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net sales	7,796	8,012
Europe [Member] | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net sales	9,684	7,373
Europe [Member] | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net sales	15,407	15,562
Southeast Asia [Member]
Segment Reporting Information [Line Items]
Net sales	28,193	30,557
Southeast Asia [Member] | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net sales	13,091	11,166
Southeast Asia [Member] | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net sales	6,527	5,573
Southeast Asia [Member] | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net sales	$ 8,575	$ 13,818

Reconciliation of Total Segment

Reconciliation of Total Segment Profit to Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Segment Profit	$ 96,695	$ 68,075
Amortization	11,669	10,945
Unallocated General And Administrative Expenses	6,553	6,210
Operating income	78,473	50,920
Interest expense	8,159	8,473
Interest income	(933)	(80)
Other income, net	139	902
Income before income tax expense	$ 71,108	$ 41,625