Entegris (ENTG) 10-Q 26 Oct 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 23, 2017
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
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		141,396,733

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 435,197	$ 406,389
Trade accounts and notes receivable, net of allowance for doubtful accounts of $2,253 and $2,474	183,417	165,675
Inventories	193,302	183,529
Deferred tax charges and refundable income taxes	15,720	20,140
Other current assets	20,865	24,398
Total current assets	848,501	800,131
Property, plant and equipment, net of accumulated depreciation of $419,277 and $387,523	346,660	321,562
Other assets:
Goodwill	355,855	345,269
Intangible assets, net of accumulated amortization of $274,787 and $237,207	190,754	217,548
Deferred tax assets and other noncurrent tax assets	9,247	8,022
Other	6,732	7,000
Total assets	1,757,749	1,699,532
Current liabilities:
Long-term debt, current maturities	100,000	100,000
Accounts payable	60,328	61,617
Accrued payroll and related benefits	53,543	54,317
Other accrued liabilities	41,618	29,213
Income taxes payable	14,390	16,424
Total current liabilities	269,879	261,571
Long-term debt, excluding current maturities, net of unamortized discount and debt issuance costs of $7,385 and $9,173	411,465	484,677
Pension benefit obligations and other liabilities	31,135	27,220
Deferred tax liabilities and other noncurrent tax liabilities	26,905	26,846
Commitments and contingent liabilities	0	0
Equity:
Preferred stock, par value $.01; 5,000,000 shares authorized; none issued and outstanding as of September 30, 2017 and December 31, 2016	0	0
Common stock, par value $.01; 400,000,000 shares authorized; issued and outstanding shares as of September 30, 2017 and December 31, 2016: 141,473,733 and 141,319,964	1,415	1,413
Additional paid-in capital	864,340	859,778
Retained earnings	193,658	92,303
Accumulated other comprehensive loss	(41,048)	(54,276)
Total equity	1,018,365	899,218
Total liabilities and equity	$ 1,757,749	$ 1,699,532

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Trade accounts and notes receivable, allowance for doubtful accounts	$ 2,253	$ 2,474
Property, plant and equipment, accumulated depreciation	419,277	387,523
Intangible assets, Accumulated amortization	274,787	237,207
Unamortized discount and debt issuance costs	$ 7,385	$ 9,173
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	141,473,733	141,319,964
Common stock, shares outstanding	141,473,733	141,319,964

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Net sales	$ 345,591	$ 296,692	$ 991,970	$ 866,768
Cost of sales	190,184	173,712	546,664	489,877
Gross profit	155,407	122,980	445,306	376,891
Selling, general and administrative expenses	57,699	51,614	161,176	153,167
Engineering, research and development expenses	26,002	25,720	80,462	79,768
Amortization of intangible assets	11,051	10,974	33,003	33,325
Operating income	60,655	34,672	170,665	110,631
Interest expense	7,749	9,468	24,418	27,778
Interest income	(150)	(123)	(323)	(233)
Other expense (income), net	2,906	(565)	3,762	(2,294)
Income before income tax expense	50,150	25,892	142,808	85,380
Income tax expense	9,248	3,945	29,401	14,331
Net income	$ 40,902	$ 21,947	$ 113,407	$ 71,049
Basic net income per common share	$ 0.29	$ 0.16	$ 0.80	$ 0.50
Diluted net income per common share	$ 0.28	$ 0.15	$ 0.79	$ 0.50
Weighted shares outstanding:
Basic	141,684	141,324	141,627	141,019
Diluted	143,594	142,473	143,472	141,856

Condensed Consolidated Stateme5

Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Net income	$ 40,902	$ 21,947	$ 113,407	$ 71,049
Other comprehensive income, net of tax
Foreign currency translation adjustments	(279)	10,512	11,805	17,276
Reclassification of cumulative translation adjustment associated with planned sale of subsidiary	1,400	0	1,400	0
Unrealized loss on available-for-sale securities	0	0	0	(611)
Pension liability adjustments	16	16	23	47
Other comprehensive income	1,137	10,528	13,228	16,712
Comprehensive income	$ 42,039	$ 32,475	$ 126,635	$ 87,761

Condensed Consolidated Stateme6

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016
Operating activities:
Net income	$ 113,407	$ 71,049
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	43,173	41,320
Amortization	33,003	33,325
Share-based compensation expense	11,457	10,063
Provision for deferred income taxes	254	(334)
Other	24,028	19,667
Changes in operating assets and liabilities:
Trade accounts and notes receivable	(15,345)	(22,252)
Inventories	(14,884)	(17,296)
Accounts payable and accrued liabilities	7,598	26,517
Other current assets	3,883	7,387
Income taxes payable and refundable income taxes	1,664	(11,364)
Other	(606)	(7,606)
Net cash provided by operating activities	207,632	150,476
Investing activities:
Acquisition of property, plant and equipment	(67,939)	(45,268)
Acquisition of business, net of cash acquired	(20,000)	0
Proceeds from sale and maturities of short-term investments	0	1,726
Other	1,074	(3,246)
Net cash used in investing activities	(86,865)	(46,788)
Financing activities:
Payments of long-term debt	(75,000)	(50,000)
Issuance of common stock	3,582	2,892
Repurchase and retirement of common stock	(18,000)	(3,573)
Taxes paid related to net share settlement of equity awards	(5,407)	(3,316)
Other	(1,270)	493
Net cash used in financing activities	(96,095)	(53,504)
Effect of exchange rate changes on cash and cash equivalents	4,136	11,768
Increase in cash and cash equivalents	28,808	61,952
Cash and cash equivalents at beginning of period	406,389	349,825
Cash and cash equivalents at end of period	435,197	411,777
Supplemental Cash Flow Information [Abstract]
Capital lease obligations incurred	4,768	0
Schedule of interest and income taxes paid [Abstract]
Interest Paid	16,167	18,995
Income Taxes Paid, Net of Refunds Received	$ 27,826	$ 24,254

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2017
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 accompanying unaudited 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 September 30, 2017 and December 31, 2016 , the results of operations, comprehensive income, and cash flows for the three and nine months ended September 30, 2017 and October 1, 2016 , and cash flows for the nine months ended September 30, 2017 and October 1, 2016 . The condensed consolidated financial statements and 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, 2016 . The results of operations for the three and nine months ended September 30, 2017 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 $529.0 million at September 30, 2017 , compared to the carrying amount of long-term debt, including current maturities, of $511.5 million at September 30, 2017. Recent Accounting Pronouncements Adopted in 2017 In April 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (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, as well as the classification of tax-related cash flows in the statement of cash flows. The update eliminates the accounting for excess tax benefits to be recognized in additional paid-in capital and tax deficiencies recognized either in the income tax provision or in additional paid-in capital. ASU No. 2016-09 became effective for the Company on January 1, 2017. The Company adopted ASU No. 2016-09 using the modified retrospective approach. In connection with the adoption of ASU No. 2016-09, the Company elected as an accounting policy to record forfeitures as they occur and recorded a cumulative-effect adjustment of $0.4 million to retained earnings as of January 1, 2017. The Company also recorded a cumulative-effect adjustment of $1.0 million to retained earnings as of January 1, 2017 with respect to previously unrecognized excess tax benefits. Under ASU No. 2016-09, excess tax benefits or deficiencies related to stock option exercises and restricted stock unit vesting are recognized in the condensed statement of operations. Accordingly, for the nine months ended September 30, 2017, the Company recorded a tax benefit of $3.4 million in the condensed statement of operations. Also related to the adoption of ASU No. 2016-09, the Company elected to present the cash flow statement using the prospective transition method. No prior periods have been adjusted. Recent Accounting Pronouncements Yet to be Adopted In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). 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 an entity's contracts will generally be recognized as control of the product 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 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. During 2017, the Company is assessing the impact that the adoption of ASU No. 2014-09 will have on its consolidated financial statements and related disclosures. To assist in this assessment, and to oversee the eventual adoption of ASU No. 2014-09, the Company established a cross-functional steering committee. The analysis of identifying revenue streams and potential effects of the new guidance is substantially complete, and the Company is now analyzing the potential magnitude of impact 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. ASU No. 2014-09 permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (modified retrospective method). The Company will adopt the standard using the modified retrospective method. The Company will complete its assessment of the estimated cumulative effect of adopting ASU No. 2014-09 during the fourth quarter. 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 for the Company beginning January 1, 2019. The Company is currently assessing the impact that the adoption of ASU No. 2016-02 will have on its consolidated financial statements and related disclosures.

Acquisition (Notes)

Acquisition (Notes)	9 Months Ended
	Sep. 30, 2017
Business Acquisition [Line Items]
Business Combination Disclosure [Text Block]	ACQUISITION On April 24, 2017, the Company acquired the microelectronic water and chemical filtration product line of W.L. Gore & Associates, Inc. (Gore). The acquired assets became part of the Company’s Microcontamination Control (MC) segment. The transaction was accounted for under the acquisition method of accounting and the results of operations of the product line are included in the Company's consolidated financial statements as of and since April 24, 2017. The acquisition of the product line’s assets and liabilities does not constitute a material business combination. The purchase price for the product line was cash consideration of $20.0 million , 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 the product line exceeds the net of the acquisition-date amounts of the identifiable assets acquired and the liabilities assumed by $8.0 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 final allocation of the purchase price to the fair values assigned to the assets and liabilities assumed at the date of acquisition: (In thousands) Amount Other current assets $ 726 Property, plant and equipment 2,447 Identifiable intangible assets 8,820 Net assets acquired 11,993 Goodwill 8,007 Total purchase price $ 20,000 Intangible assets, consisting mostly of technology-related intellectual property, generally will be amortized on a straight-line basis over an estimated useful life of approximately 7 years. As part of the accounting for this transaction, the Company allocated the purchase price of the acquired product line based on the fair value of all the assets acquired. The valuation of the assets acquired 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. In performing these valuations, 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. The final valuation of assets acquired and liabilities assumed was completed in the third quarter of 2017.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2017
Inventory Disclosure [Abstract]
Inventories	INVENTORIES Inventories consist of the following: (In thousands) September 30, 2017 December 31, 2016 Raw materials $ 57,336 $ 53,109 Work-in process 17,996 15,976 Finished goods 117,970 114,444 Total inventories $ 193,302 $ 183,529

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2017
Intangible Assets	GOODWILL AND INTANGIBLE ASSETS Goodwill activity for each period was as follows: (In thousands) Specialty Chemicals and Engineered Materials Microcontamination Control Advanced Materials Handling Total December 31, 2016 $ 297,858 $ — $ 47,411 $ 345,269 Addition due to acquisition — 8,007 — 8,007 Foreign currency translation 2,579 — — 2,579 September 30, 2017 $ 300,437 $ 8,007 $ 47,411 $ 355,855 Identifiable intangible assets at September 30, 2017 and December 31, 2016 consist of the following: September 30, 2017 (In thousands) Gross carrying Amount Accumulated amortization Net carrying value Developed technology $ 210,352 $ 147,349 $ 63,003 Trademarks and trade names 16,676 13,483 3,193 Customer relationships 219,080 105,581 113,499 Other 19,433 8,374 11,059 $ 465,541 $ 274,787 $ 190,754 December 31, 2016 (In thousands) Gross carrying amount Accumulated amortization Net carrying value Developed technology $ 202,591 $ 126,077 $ 76,514 Trademarks and trade names 16,661 12,617 4,044 Customer relationships 216,918 90,581 126,337 Other 18,585 7,932 10,653 $ 454,755 $ 237,207 $ 217,548 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 September 30, 2017 to be the following: Fiscal year ending December 31 (In thousands) 2017 $ 10,996 2018 43,659 2019 41,381 2020 26,718 2021 20,086 Thereafter 47,914 $ 190,754

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2017
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 Nine months ended (In thousands) September 30, 2017 October 1, 2016 September 30, 2017 October 1, 2016 Basic—weighted common shares outstanding 141,684 141,324 141,627 141,019 Weighted common shares assumed upon exercise of stock options and vesting of restricted common stock 1,910 1,149 1,845 837 Diluted—weighted common shares and common shares equivalent outstanding 143,594 142,473 143,472 141,856 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 and nine months ended September 30, 2017 and October 1, 2016 : Three months ended Nine months ended (In thousands) September 30, 2017 October 1, 2016 September 30, 2017 October 1, 2016 Shares excluded from calculations of diluted EPS 355 23 293 831

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2017
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 September 30, 2017 and December 31, 2016 . 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. September 30, 2017 December 31, 2016 (In thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Other current assets Foreign currency contracts (a) $ — $ — $ — $ — $ — $ 4,784 $ — $ 4,784 Total assets measured and recorded at fair value $ — $ — $ — $ — $ — $ 4,784 $ — $ 4,784 Liabilities: Other accrued liabilities Foreign currency contracts (a) $ — $ 132 $ — $ 132 $ — $ — $ — $ — Total liabilities measured and recorded at fair value $ — $ 132 $ — $ 132 $ — $ — $ — $ — (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 September 30, 2017 and December 31, 2016 condensed consolidated balance sheets to the net fair value that could have been reported in the respective condensed consolidated balance sheets is as follows: September 30, 2017 December 31, 2016 (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 $ 132 $ — $ 132 $ 4,784 $ — $ 4,784 Losses associated with derivatives are recorded in other income, net, in the condensed consolidated statements of operations. Losses associated with derivative instruments not designated as hedging instruments were as follows: Three months ended Nine months ended (In thousands) September 30, 2017 October 1, 2016 September 30, 2017 October 1, 2016 Losses on foreign currency contracts $ (132 ) $ (267 ) $ (2,245 ) $ (6,432 )

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Segment Reporting	SEGMENT REPORTING The Company reports its financial performance based on three reportable segments, which reflects an organizational alignment intended to 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 unique products, solutions, 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'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, as well as 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. Intersegment 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, corporate, finance and information technology functions as well as interest expense, amortization of intangible assets and income taxes. Summarized financial information for the Company’s reportable segments is shown in the following tables. Three months ended Nine months ended (In thousands) September 30, 2017 October 1, 2016 September 30, 2017 October 1, 2016 Net sales SCEM $ 124,522 $ 104,494 $ 360,131 $ 317,383 MC 116,113 94,738 320,575 263,941 AMH 104,956 97,460 311,264 285,444 Total net sales $ 345,591 $ 296,692 $ 991,970 $ 866,768 Three months ended Nine months ended (In thousands) September 30, 2017 October 1, 2016 September 30, 2017 October 1, 2016 Segment profit SCEM $ 34,647 $ 18,811 $ 96,961 $ 70,141 MC 43,984 31,617 116,049 78,323 AMH 16,882 15,378 54,731 56,808 Total segment profit $ 95,513 $ 65,806 $ 267,741 $ 205,272 The following table reconciles total segment profit to income before income taxes: Three months ended Nine months ended (In thousands) September 30, 2017 October 1, 2016 September 30, 2017 October 1, 2016 Total segment profit $ 95,513 $ 65,806 $ 267,741 $ 205,272 Less: Amortization of intangible assets 11,051 10,974 33,003 33,325 Unallocated general and administrative expenses 23,807 20,160 64,073 61,316 Operating income 60,655 34,672 170,665 110,631 Interest expense 7,749 9,468 24,418 27,778 Interest income (150 ) (123 ) (323 ) (233 ) Other expense (income), net 2,906 (565 ) 3,762 (2,294 ) Income before income tax expense $ 50,150 $ 25,892 $ 142,808 $ 85,380

Subsequent Event (Notes)

Subsequent Event (Notes)	9 Months Ended
	Sep. 30, 2017
Subsequent Events [Abstract]
Subsequent Events [Text Block]	SUBSEQUENT EVENT On October 18, 2017 , the Company's Board of Directors declared an initial quarterly cash dividend of $0.07 per share to be paid on November 22, 2017 to shareholders of record on the close of business on November 1, 2017 . Future dividend declarations, if any, as well as the record and payment dates for such dividends, are subject to the final determination of the Company’s Board of Directors.

Summary of Significant Accoun15

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Nature of Operations	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	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 accompanying unaudited 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 September 30, 2017 and December 31, 2016 , the results of operations, comprehensive income, and cash flows for the three and nine months ended September 30, 2017 and October 1, 2016 , and cash flows for the nine months ended September 30, 2017 and October 1, 2016 . The condensed consolidated financial statements and 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, 2016 . The results of operations for the three and nine months ended September 30, 2017 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 $529.0 million at September 30, 2017 , compared to the carrying amount of long-term debt, including current maturities, of $511.5 million at September 30, 2017.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Adopted in 2017 In April 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (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, as well as the classification of tax-related cash flows in the statement of cash flows. The update eliminates the accounting for excess tax benefits to be recognized in additional paid-in capital and tax deficiencies recognized either in the income tax provision or in additional paid-in capital. ASU No. 2016-09 became effective for the Company on January 1, 2017. The Company adopted ASU No. 2016-09 using the modified retrospective approach. In connection with the adoption of ASU No. 2016-09, the Company elected as an accounting policy to record forfeitures as they occur and recorded a cumulative-effect adjustment of $0.4 million to retained earnings as of January 1, 2017. The Company also recorded a cumulative-effect adjustment of $1.0 million to retained earnings as of January 1, 2017 with respect to previously unrecognized excess tax benefits. Under ASU No. 2016-09, excess tax benefits or deficiencies related to stock option exercises and restricted stock unit vesting are recognized in the condensed statement of operations. Accordingly, for the nine months ended September 30, 2017, the Company recorded a tax benefit of $3.4 million in the condensed statement of operations. Also related to the adoption of ASU No. 2016-09, the Company elected to present the cash flow statement using the prospective transition method. No prior periods have been adjusted. Recent Accounting Pronouncements Yet to be Adopted In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). 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 an entity's contracts will generally be recognized as control of the product 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 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. During 2017, the Company is assessing the impact that the adoption of ASU No. 2014-09 will have on its consolidated financial statements and related disclosures. To assist in this assessment, and to oversee the eventual adoption of ASU No. 2014-09, the Company established a cross-functional steering committee. The analysis of identifying revenue streams and potential effects of the new guidance is substantially complete, and the Company is now analyzing the potential magnitude of impact 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. ASU No. 2014-09 permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (modified retrospective method). The Company will adopt the standard using the modified retrospective method. The Company will complete its assessment of the estimated cumulative effect of adopting ASU No. 2014-09 during the fourth quarter. 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 for the Company beginning January 1, 2019. The Company is currently assessing the impact that the adoption of ASU No. 2016-02 will have on its consolidated financial statements and related disclosures.

Acquisition (Tables)

Acquisition (Tables)	9 Months Ended
	Sep. 30, 2017
Business Acquisition [Line Items]
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	The following table summarizes the final allocation of the purchase price to the fair values assigned to the assets and liabilities assumed at the date of acquisition: (In thousands) Amount Other current assets $ 726 Property, plant and equipment 2,447 Identifiable intangible assets 8,820 Net assets acquired 11,993 Goodwill 8,007 Total purchase price $ 20,000

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2017
Inventory Disclosure [Abstract]
Inventories	Inventories consist of the following: (In thousands) September 30, 2017 December 31, 2016 Raw materials $ 57,336 $ 53,109 Work-in process 17,996 15,976 Finished goods 117,970 114,444 Total inventories $ 193,302 $ 183,529

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Schedule of Goodwill	Goodwill activity for each period was as follows: (In thousands) Specialty Chemicals and Engineered Materials Microcontamination Control Advanced Materials Handling Total December 31, 2016 $ 297,858 $ — $ 47,411 $ 345,269 Addition due to acquisition — 8,007 — 8,007 Foreign currency translation 2,579 — — 2,579 September 30, 2017 $ 300,437 $ 8,007 $ 47,411 $ 355,855
Schedule of Acquired Finite-Lived Intangible Assets by Major Class	Identifiable intangible assets at September 30, 2017 and December 31, 2016 consist of the following: September 30, 2017 (In thousands) Gross carrying Amount Accumulated amortization Net carrying value Developed technology $ 210,352 $ 147,349 $ 63,003 Trademarks and trade names 16,676 13,483 3,193 Customer relationships 219,080 105,581 113,499 Other 19,433 8,374 11,059 $ 465,541 $ 274,787 $ 190,754 December 31, 2016 (In thousands) Gross carrying amount Accumulated amortization Net carrying value Developed technology $ 202,591 $ 126,077 $ 76,514 Trademarks and trade names 16,661 12,617 4,044 Customer relationships 216,918 90,581 126,337 Other 18,585 7,932 10,653 $ 454,755 $ 237,207 $ 217,548
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 September 30, 2017 to be the following: Fiscal year ending December 31 (In thousands) 2017 $ 10,996 2018 43,659 2019 41,381 2020 26,718 2021 20,086 Thereafter 47,914 $ 190,754

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2017
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 Nine months ended (In thousands) September 30, 2017 October 1, 2016 September 30, 2017 October 1, 2016 Basic—weighted common shares outstanding 141,684 141,324 141,627 141,019 Weighted common shares assumed upon exercise of stock options and vesting of restricted common stock 1,910 1,149 1,845 837 Diluted—weighted common shares and common shares equivalent outstanding 143,594 142,473 143,472 141,856
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 and nine months ended September 30, 2017 and October 1, 2016 : Three months ended Nine months ended (In thousands) September 30, 2017 October 1, 2016 September 30, 2017 October 1, 2016 Shares excluded from calculations of diluted EPS 355 23 293 831

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2017
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 September 30, 2017 and December 31, 2016 . 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. September 30, 2017 December 31, 2016 (In thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Other current assets Foreign currency contracts (a) $ — $ — $ — $ — $ — $ 4,784 $ — $ 4,784 Total assets measured and recorded at fair value $ — $ — $ — $ — $ — $ 4,784 $ — $ 4,784 Liabilities: Other accrued liabilities Foreign currency contracts (a) $ — $ 132 $ — $ 132 $ — $ — $ — $ — Total liabilities measured and recorded at fair value $ — $ 132 $ — $ 132 $ — $ — $ — $ — (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 September 30, 2017 and December 31, 2016 condensed consolidated balance sheets to the net fair value that could have been reported in the respective condensed consolidated balance sheets is as follows: September 30, 2017 December 31, 2016 (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 $ 132 $ — $ 132 $ 4,784 $ — $ 4,784
Gains and (losses) associated with derivatives	associated with derivatives are recorded in other income, net, in the condensed consolidated statements of operations. Losses associated with derivative instruments not designated as hedging instruments were as follows: Three months ended Nine months ended (In thousands) September 30, 2017 October 1, 2016 September 30, 2017 October 1, 2016 Losses on foreign currency contracts $ (132 ) $ (267 ) $ (2,245 ) $ (6,432 )

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2017
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 Nine months ended (In thousands) September 30, 2017 October 1, 2016 September 30, 2017 October 1, 2016 Net sales SCEM $ 124,522 $ 104,494 $ 360,131 $ 317,383 MC 116,113 94,738 320,575 263,941 AMH 104,956 97,460 311,264 285,444 Total net sales $ 345,591 $ 296,692 $ 991,970 $ 866,768 Three months ended Nine months ended (In thousands) September 30, 2017 October 1, 2016 September 30, 2017 October 1, 2016 Segment profit SCEM $ 34,647 $ 18,811 $ 96,961 $ 70,141 MC 43,984 31,617 116,049 78,323 AMH 16,882 15,378 54,731 56,808 Total segment profit $ 95,513 $ 65,806 $ 267,741 $ 205,272
Reconciliation of Total Segment Profit to Operating Income	The following table reconciles total segment profit to income before income taxes: Three months ended Nine months ended (In thousands) September 30, 2017 October 1, 2016 September 30, 2017 October 1, 2016 Total segment profit $ 95,513 $ 65,806 $ 267,741 $ 205,272 Less: Amortization of intangible assets 11,051 10,974 33,003 33,325 Unallocated general and administrative expenses 23,807 20,160 64,073 61,316 Operating income 60,655 34,672 170,665 110,631 Interest expense 7,749 9,468 24,418 27,778 Interest income (150 ) (123 ) (323 ) (233 ) Other expense (income), net 2,906 (565 ) 3,762 (2,294 ) Income before income tax expense $ 50,150 $ 25,892 $ 142,808 $ 85,380

Summary of Significant Accoun22

Summary of Significant Accounting Policies Fair Value of Financial Instruments (Details) $ in Thousands	Sep. 30, 2017USD ($)
Accounting Policies [Abstract]
Long-term Debt, Fair Value	$ 529,020
Long-term Debt	$ 511,465

Summary of Significant Accoun23

Summary of Significant Accounting Policies Recent Accounting Pronouncement ASU 2016-09 (Details) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 3.4
Change in Forfeiture Policy
Cumulative Effect of New Accounting Principle in Period of Adoption	0.4
Unrecognized Excess Tax Benefit
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 1

Acquisition Purchase Price Allo

Acquisition Purchase Price Allocation (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Apr. 24, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill	$ 355,855		$ 345,269
product line acquisition member [Member]
Business Acquisition [Line Items]
Other Current Assets		$ 726
Property, Plant and Equipment		2,447
Identifiable Intangible Assets		8,820
Net Assets Acquired		11,993
Goodwill		8,007
Total Purchase Price		$ 20,000

Acquisition Additional Acquisit

Acquisition Additional Acquisition (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Apr. 24, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill	$ 355,855		$ 345,269
product line acquisition member [Member]
Business Acquisition [Line Items]
Total Purchase Price		$ 20,000
Goodwill		$ 8,007
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 57,336	$ 53,109
Work-in process	17,996	15,976
Finished goods	117,970	114,444
Total inventories	$ 193,302	$ 183,529

Goodwill Rollforward (Details)

Goodwill Rollforward (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Goodwill [Line Items]
Goodwill, Beginning	$ 345,269
Addition due to acquisition	8,007
Foreign currency translation	2,579
Goodwill, Ending	355,855
Specialty Chemicals and Electronic Materials SCEM [Member]
Goodwill [Line Items]
Goodwill, Beginning	297,858
Addition due to acquisition	0
Foreign currency translation	2,579
Goodwill, Ending	300,437
Microcontamination Control MC [Member]
Goodwill [Line Items]
Goodwill, Beginning	0
Addition due to acquisition	8,007
Foreign currency translation	0
Goodwill, Ending	8,007
Advanced Materials Handling AMH [Member]
Goodwill [Line Items]
Goodwill, Beginning	47,411
Addition due to acquisition	0
Foreign currency translation	0
Goodwill, Ending	$ 47,411

Intangible Assets (Details)

Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets
Gross carrying Amount	$ 465,541	$ 454,755
Accumulated amortization	274,787	237,207
Net carrying value	190,754	217,548
Developed Technology
Finite-Lived Intangible Assets
Gross carrying Amount	210,352	202,591
Accumulated amortization	147,349	126,077
Net carrying value	63,003	76,514
Trademarks and Trade names
Finite-Lived Intangible Assets
Gross carrying Amount	16,676	16,661
Accumulated amortization	13,483	12,617
Net carrying value	3,193	4,044
Customer Relationships
Finite-Lived Intangible Assets
Gross carrying Amount	219,080	216,918
Accumulated amortization	105,581	90,581
Net carrying value	113,499	126,337
Other
Finite-Lived Intangible Assets
Gross carrying Amount	19,433	18,585
Accumulated amortization	8,374	7,932
Net carrying value	$ 11,059	$ 10,653

Goodwill and Intangible Asset29

Goodwill and Intangible Assets Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets
2,017	$ 10,996
2,018	43,659
2,019	41,381
2,020	26,718
2,021	20,086
Thereafter	47,914
Intangible assets, net	$ 190,754	$ 217,548

Reconciliation of Share Amount

Reconciliation of Share Amount Used in Computation of Basic and Diluted Earnings Per Share (EPS) (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Weighted shares outstanding:
Basic-weighted common shares outstanding	141,684	141,324	141,627	141,019
Weighted common shares assumed upon exercise of stock options and vesting of restricted common stock	1,910	1,149	1,845	837
Diluted-weighted common shares and common shares equivalent outstanding	143,594	142,473	143,472	141,856

Shares Excluded Underlying Stoc

Shares Excluded Underlying Stock Based Award from Calucations of Diluted EPS (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from calculations of diluted EPS	355	23	293	831

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, asset		$ 4,784
Total assets measured and recorded at fair value	$ 0	4,784
Foreign currency contracts, liabilities	132
Total liabilities measured and recorded at fair value	132	0
Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts, asset	0	4,784
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	4,784
Total liabilities measured and recorded at fair value	132	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	4,784
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	132	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	132	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 (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Gross amounts of recognized liabilities	$ 132	$ 0
Gross amounts of recognized assets	0	4,784
Derivative Liability	$ 132
Net amount of assets		$ 4,784

Fair Value Gain (losses) associ

Fair Value Gain (losses) associated with derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Fair Value Disclosures [Abstract]
Losses on forward currency contracts	$ (132)	$ (267)	$ (2,245)	$ (6,432)

Summary of Financial Informatio

Summary of Financial Information for Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Segment Reporting Information [Line Items]
Net sales	$ 345,591	$ 296,692	$ 991,970	$ 866,768
Total Segment Profit	95,513	65,806	267,741	205,272
Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net sales	124,522	104,494	360,131	317,383
Total Segment Profit	34,647	18,811	96,961	70,141
Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net sales	116,113	94,738	320,575	263,941
Total Segment Profit	43,984	31,617	116,049	78,323
Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net sales	104,956	97,460	311,264	285,444
Total Segment Profit	$ 16,882	$ 15,378	$ 54,731	$ 56,808

Reconciliation of Total Segment

Reconciliation of Total Segment Profit to Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Segment Profit	$ 95,513	$ 65,806	$ 267,741	$ 205,272
Amortization	11,051	10,974	33,003	33,325
Unallocated General And Administrative Expenses	23,807	20,160	64,073	61,316
Operating income	60,655	34,672	170,665	110,631
Interest expense	7,749	9,468	24,418	27,778
Interest income	(150)	(123)	(323)	(233)
Other income, net	2,906	(565)	3,762	(2,294)
Income before income tax expense	$ 50,150	$ 25,892	$ 142,808	$ 85,380

Subsequent Event (Details)

Subsequent Event (Details) - Subsequent Event [Member]	Oct. 18, 2017$ / shares
Subsequent Event [Line Items]
Dividend declared date	Oct. 18, 2017
Cash Dividend to be paid	$ 0.07
Dividends to be paid	Nov. 22, 2017
Dividends declared, Shareholders of Record	Nov. 1, 2017