Materion (MTRN) 10-Q 26 Jul 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information	6 Months Ended
	Jun. 29, 2018shares
Document and Entity Information [Abstract]
Entity Registrant Name	MATERION Corp
Entity Central Index Key	1,104,657
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 29, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Trading Symbol	MTRN
Amendment Flag	false
Entity Common Stock, Shares Outstanding	20,235,856

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Income Statement [Abstract]
Net sales	$ 309,085	$ 295,842	$ 612,552	$ 536,511
Cost of sales	247,247	241,064	492,434	438,577
Gross margin	61,838	54,778	120,118	97,934
Selling, general, and administrative expense	38,473	37,928	76,935	71,449
Research and development expense	3,860	3,544	7,503	6,674
Other net	4,313	3,204	7,237	6,022
Operating profit	15,192	10,102	28,443	13,789
Interest expense—net	667	695	1,397	1,188
Other non-operating expense - net	437	368	879	635
Income before income taxes	14,088	9,039	26,167	11,966
Income tax expense	2,944	1,726	4,459	1,603
Net income	$ 11,144	$ 7,313	$ 21,708	$ 10,363
Basic earnings per share:
Net income per share of common stock (in dollars per share)	$ 0.55	$ 0.37	$ 1.08	$ 0.52
Diluted earnings per share:
Net income per share of common stock (in dollars per share)	0.54	0.36	1.05	0.51
Cash dividends per share (in dollars per share)	$ 0.105	$ 0.1	$ 0.205	$ 0.195
Weighted-average number of shares of common stock outstanding:
Basic (in shares)	20,221	20,012	20,178	19,991
Diluted (in shares)	20,593	20,347	20,583	20,348

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 11,144	$ 7,313	$ 21,708	$ 10,363
Other comprehensive income (loss):
Foreign currency translation adjustment	(944)	275	169	1,378
Derivative and hedging activity, net of tax	1,763	(174)	1,088	(635)
Pension and post-employment benefit adjustment, net of tax	1,296	759	2,574	1,516
Net current period other comprehensive income (loss) after tax	2,115	860	3,831	2,259
Comprehensive income	$ 13,259	$ 8,173	$ 25,539	$ 12,622

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 29, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 42,895	$ 41,844
Accounts receivable	135,699	124,014
Inventories	209,204	220,352
Prepaid and other current assets	19,617	24,733
Total current assets	407,415	410,943
Long-term deferred income taxes	16,588	17,047
Property, plant, and equipment	894,306	891,789
Less allowances for depreciation, depletion, and amortization	(637,730)	(636,211)
Property, plant, and equipment—net	256,576	255,578
Intangible assets—net	7,899	9,847
Other assets	6,991	6,992
Goodwill	90,697	90,677
Total Assets	786,166	791,084
Current liabilities
Short-term debt	798	777
Accounts payable	46,240	49,059
Salaries and wages	32,299	42,694
Other liabilities and accrued items	27,182	28,044
Income taxes	2,994	1,084
Unearned revenue	7,576	5,451
Total current liabilities	117,089	127,109
Other long-term liabilities	14,203	14,895
Capital lease obligations	15,896	16,072
Retirement and post-employment benefits	80,944	93,225
Unearned income	34,734	36,905
Long-term income taxes	4,896	4,857
Long-term deferred income taxes	210	213
Long-term debt	2,453	2,827
Serial preferred stock	0	0
Common stock	230,763	223,484
Retained earnings	553,523	536,116
Common stock in treasury	(173,825)	(166,128)
Accumulated other comprehensive loss	(99,106)	(102,937)
Other equity transactions	4,386	4,446
Total shareholders' equity	515,741	494,981
Total Liabilities and Shareholders’ Equity	$ 786,166	$ 791,084

Consolidated Balance Sheets Con

Consolidated Balance Sheets Consolidated Balance Sheets (Parenthetical) - $ / shares $ / shares in Thousands	Jun. 29, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Serial preferred stock, par value (in dollars per share)	$ 0	$ 0
Serial preferred stock, shares authorized	5,000,000	5,000,000
Serial preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares, issued	27,148,000	27,148,000
Treasury stock, shares	6,912,000	7,042,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 21,708	$ 10,363
Adjustments to reconcile net income to net cash provided from (used in) operating activities:
Depreciation, depletion, and amortization	18,349	20,725
Amortization of deferred financing costs in interest expense	514	440
Non-cash compensation expense	5,412	5,816
Deferred income tax expense	429	658
Changes in assets and liabilities net of acquired assets and liabilities:
Decrease (increase) in accounts receivable	(12,060)	(30,882)
Decrease (increase) in inventories	10,428	(6,498)
Decrease (increase) in prepaid and other current assets	4,928	(9,267)
Increase (decrease) in accounts payable and accrued expenses	(14,189)	15,519
Increase (Decrease) in Unearned Revenue	2,132	1,685
Increase (decrease) in interest and taxes payable	2,084	(1,115)
Domestic pension plan contributions	(13,000)	(4,000)
Other-net	2,569	(3,141)
Net cash used in operating activities	29,304	303
Cash flows from investing activities:
Payments for purchase of property, plant, and equipment	(17,153)	(11,252)
Payments for mine development	(3,425)	(509)
Payments for acquisition	0	(16,504)
Proceeds from sale of property, plant, and equipment	27	27
Net cash used in investing activities	(20,551)	(28,238)
Cash flows from financing activities:
Proceeds from issuance of short-term debt	0	2,387
Proceeds from issuance of long-term debt	0	45,000
Repayment of long-term debt	(383)	(25,362)
Principal payments under capital lease obligations	(425)	(383)
Cash dividends paid	(4,137)	(3,899)
Deferred financing costs	0	(300)
Repurchase of common stock	0	(1,086)
Payments of withholding taxes for stock-based compensation awards	(2,765)	(2,302)
Net cash (used in) provided by financing activities	(7,710)	14,055
Effects of exchange rate changes	8	913
Net change in cash and cash equivalents	1,051	(12,967)
Cash and cash equivalents at beginning of period	41,844	31,464
Cash and cash equivalents at end of period	$ 42,895	$ 18,497

Accounting Policies

Accounting Policies	6 Months Ended
	Jun. 29, 2018
Accounting Policies [Abstract]
Accounting Policies	Accounting Policies Basis of Presentation: In management’s opinion, the accompanying consolidated financial statements of Materion Corporation and its subsidiaries (referred to herein as the Company, our, we, or us) contain all of the adjustments necessary to present fairly the financial position, results of operations, and cash flows for the interim periods reported. All adjustments were of a normal and recurring nature. Certain amounts in prior periods have been reclassified to conform to the 2018 consolidated financial statement presentation. These financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company's 2017 Annual Report on Form 10-K. The interim period results are not necessarily indicative of the results to be expected for the full year. New Pronouncements Adopted: In March 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, which requires an employer to report the service cost component of net benefit cost in the same line item as other compensation costs arising from services rendered by pertinent employees during the period. This ASU requires non-service cost components of net benefit cost to be presented in a caption below the Company's Operating profit and allows only the service cost component to be eligible for capitalization. This ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those periods, with early adoption permitted. The amendments were applied retrospectively for the presentation of service cost and other components of net benefit cost on the income statement and prospectively for the capitalization of service cost and net periodic postretirement benefits in assets. The application of ASU 2017-07 resulted in an increase to Operating profit of $0.4 million and $0.6 million for the second quarter and first six months of 2017, respectively, which was offset by a corresponding increase in Other non-operating expense, net. The adoption of this ASU did not have a material effect on the Company's financial condition or liquidity. The Company utilized this ASU's practical expedient, which permits the Company to use the amounts disclosed in its Pensions and Other Post-employment Benefits note for the prior comparative periods as the estimation basis for applying the retrospective presentation requirements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (ASC 606), which supersedes previous revenue recognition guidance. The Company adopted the new standard using the modified retrospective method as of January 1, 2018. Prior periods were not retrospectively adjusted. This approach was applied to all contracts not completed as of January 1, 2018. The new standard primarily impacted the Company's timing of revenue recognition for certain contracts and subcontracts with the United States (U.S.) government that contain termination for convenience clauses, and due to the cumulative impact of adopting ASC 606, the Company recorded a reduction to beginning retained earnings of $0.4 million, net of tax as summarized below: (Thousands) December 31, 2017 Adjustments due to ASC 606 January 1, 2018 Assets Unbilled receivables $ — $ 2,658 $ 2,658 Inventories 220,352 (2,059 ) 218,293 Liabilities and Shareholders’ Equity Other liabilities and accrued items $ 28,044 61 28,105 Deferred income taxes 213 113 326 Retained earnings 536,116 425 536,541 The adoption of the standard did not have a material impact to the Company's consolidated financial statements. Refer to Note B for additional disclosures relating to ASC 606. New Pronouncements Issued: In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities , which amends and simplifies existing guidance to allow companies to more accurately present the economic effects of risk management activities in the financial statements. This ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those periods, with early adoption permitted. The Company is currently evaluating the impact of adopting this new guidance on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases , which eliminates the off-balance-sheet accounting for leases. The new guidance will require lessees to report their operating leases as both an asset and liability on the balance sheet and disclose key information about leasing arrangements. The Company will adopt this ASU on January 1, 2019. In preparation for the adoption, the Company, along with an outside consultant, has executed on its project plan to identify a complete lease population, analyze lease agreements, and evaluate technology solutions. Currently, this ASU is required to be applied on a modified retrospective basis. The FASB has proposed another transition method in addition to the existing requirements to transition to the new lease standard by recognizing a cumulative effect adjustment to the opening balance of retained earnings in the period of adoption. The Company has not decided on its transition method to adopt this new guidance. No other recently issued or effective ASUs had, or are expected to have, a material effect on the Company's results of operations, financial condition, or liquidity.

Revenue Recognition

Revenue Recognition	6 Months Ended
	Jun. 29, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	Revenue Recognition Net sales consist primarily of revenue from the sale of precious and non-precious specialty metals, beryllium and copper-based alloys, beryllium composites, and other products into numerous end markets. The Company requires an agreement with a customer that creates enforceable rights and performance obligations. The Company generally recognizes revenue, in an amount that reflects the consideration to which it expects to be entitled, upon satisfaction of a performance obligation by transferring control over a product to the customer. Control over the product is generally transferred to the customer when the Company has a present right to payment, the customer has legal title, the customer has physical possession, the customer has the significant risks and rewards of ownership, and/or the customer has accepted the product. Shipping and Handling Costs : The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill our promise to transfer the associated products. Accordingly, customer payments of shipping and handling costs are recorded as a component of net sales, and related costs are recorded as a component of cost of sales. Taxes Collected from Customers and Remitted to Governmental Authorities : Revenue is recorded net of taxes collected from customers that are remitted to governmental authorities, with the collected taxes recorded as current liabilities until remitted to the relevant government authority. Product Warranty : Substantially all of the Company’s customer contracts contain a warranty that provides assurance that the purchased product will function as expected and in accordance with certain specifications. The warranty is intended to safeguard the customer against existing defects and does not provide any incremental service to the customer. Transaction Price Allocated to Future Performance Obligations: ASC 606 requires that the Company disclose the aggregate amount of transaction price that is allocated to performance obligations that have not yet been satisfied at June 29, 2018. Remaining performance obligations include noncancelable purchase orders and customer contracts. The guidance provides certain practical expedients that limit this requirement. As such, the Company does not disclose the value of unsatisfied performance obligations for contracts with an original expected length of one year or less. After considering the practical expedient, at June 29, 2018, the aggregate amount of the transaction price allocated to remaining performance obligations was approximately $36.0 million , of which $7.5 million will be recognized in 2018. Contract Costs : 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. These costs primarily relate to sales commissions, which are included in selling, general, and administrative expenses. Contract Balances : The timing of revenue recognition, billings and cash collections resulted in the following contract assets and contract liabilities: (Thousands) June 29, 2018 January 1, 2018 $ change % change Accounts receivable, trade $ 128,450 $ 122,393 $ 6,057 5 % Unbilled receivables 6,341 2,658 3,683 139 % Unearned revenue 7,576 5,451 2,125 39 % Accounts receivable, trade represents payments due from customers relating to the transfer of the Company’s products and services. The Company believes that its receivables are collectible and appropriate allowances for doubtful accounts have been recorded. Impairment losses (bad debt) incurred relating to our receivables were immaterial during the second quarter and first six months of 2018. Unbilled receivables represent expenditures on contracts, plus applicable profit margin, not yet billed. Unbilled receivables are normally billed and collected within one year. Billings made on contracts are recorded as a reduction of unbilled receivables. Unearned revenue is recorded for consideration received from customers in advance of satisfaction of the related performance obligations. As a practical expedient, the Company does not adjust the promised amount of consideration for the effects of a significant financing component because the period between the transfer of a product or service to a customer and when the customer pays for that product or service will be one year or less. The Company does not include extended payment terms in its contracts with customers.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 29, 2018
Business Combinations [Abstract]
Acquisition Disclosure	Acquisitions On February 28, 2017, the Company acquired the target materials business of the Heraeus Group (HTB), of Hanau, Germany, for $16.5 million . This business manufactures precious and non-precious metal target materials for the architectural and automotive glass, electronic display, photovoltaic, and semiconductor markets at facilities in Germany, Taiwan, and the United States. This business operates within the Advanced Materials segment, and the results of operations are included as of the date of acquisition. The final purchase price allocation for the acquisition is as follows: (Thousands) Amount Assets: Inventories $ 7,221 Prepaid and other current assets 2,270 Long-term deferred income taxes 14 Property, plant, and equipment 6,501 Intangible assets 3,649 Goodwill 3,574 Total assets acquired $ 23,229 Liabilities: Other liabilities and accrued items $ 984 Other long-term liabilities 449 Retirement and post-employment benefits 5,292 Total liabilities assumed $ 6,725 Total purchase price $ 16,504 No material measurement period adjustments were recorded upon finalizing the purchase price allocation in the first quarter of 2018.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 29, 2018
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting The Company has the following reportable segments: Performance Alloys and Composites, Advanced Materials, Precision Coatings, and Other. The Company’s reportable segments represent components of the Company for which separate financial information is available that is utilized on a regular basis by the Chief Executive Officer, the Company's Chief Operating Decision Maker, in determining how to allocate the Company’s resources and evaluate performance. Performance Alloys and Composites produces strip and bulk form alloy products, strip metal products with clad inlay and overlay metals, beryllium-based metals, beryllium, and aluminum metal matrix composites, in rod, sheet, foil, and a variety of customized forms, beryllia ceramics, and bulk metallic glass materials. Advanced Materials produces advanced chemicals, microelectric packaging, precious metal, non-precious metal, and specialty metal products, including vapor deposition targets, frame lid assemblies, clad and precious metal preforms, high temperature braze materials, and ultra-fine wire. Precision Coatings produces thin film coatings, optical filter materials, sputter-coated, and precision-converted thin film materials. The Other reportable segment includes unallocated corporate costs and assets. (Thousands) Performance Alloys and Composites Advanced Materials Precision Coatings Other Total Second Quarter 2018 Net sales $ 129,765 $ 150,324 $ 28,996 $ — $ 309,085 Intersegment sales 3 11,400 — — 11,403 Value-added sales 110,150 57,267 23,393 (908 ) 189,902 Operating profit (loss) 12,309 5,572 2,233 (4,922 ) 15,192 Second Quarter 2017 Net sales $ 108,541 $ 157,044 $ 30,257 $ — $ 295,842 Intersegment sales 4 13,247 — — 13,251 Value-added sales 92,686 62,041 22,613 (1,241 ) 176,099 Operating profit (loss) 5,548 8,670 2,314 (6,430 ) 10,102 First Six Months 2018 Net sales $ 248,001 $ 303,869 $ 60,682 $ — $ 612,552 Intersegment sales 31 23,052 — — 23,083 Value-added sales 210,449 115,550 47,034 (1,818 ) 371,215 Operating profit (loss) 22,170 11,470 5,608 (10,805 ) 28,443 First Six Months 2017 Net sales $ 201,094 $ 271,780 $ 63,637 $ — $ 536,511 Intersegment sales 59 29,694 — — 29,753 Value-added sales 171,897 109,329 45,914 (2,060 ) 325,080 Operating profit (loss) 5,737 15,117 4,532 (11,597 ) 13,789 The following table disaggregates revenue for each segment by end market for the second quarter and first six months of 2018: (Thousands) Performance Alloys and Composites Advanced Materials Precision Coatings Other Total Second Quarter 2018 End Market Consumer Electronics $ 26,469 $ 88,230 $ 5,035 $ — $ 119,734 Industrial Components 25,025 11,501 2,900 — 39,426 Energy 10,202 16,311 8 — 26,521 Automotive Electronics 19,879 — 469 — 20,348 Defense 14,932 3,353 4,887 — 23,172 Medical 1,816 4,712 14,455 — 20,983 Telecom Infrastructure 10,890 7,968 — — 18,858 Other 20,552 18,249 1,242 — 40,043 Total $ 129,765 $ 150,324 $ 28,996 $ — $ 309,085 First Six Months 2018 End Market Consumer Electronics $ 51,827 $ 170,280 $ 9,314 $ — $ 231,421 Industrial Components 53,546 24,800 5,392 — 83,738 Energy 18,006 39,747 8 — 57,761 Automotive Electronics 38,849 — 691 — 39,540 Defense 21,554 7,838 9,202 — 38,594 Medical 3,559 9,121 33,525 — 46,205 Telecom Infrastructure 18,984 15,325 59 — 34,368 Other 41,676 36,758 2,491 — 80,925 Total $ 248,001 $ 303,869 $ 60,682 $ — $ 612,552 Intersegment sales are eliminated in consolidation.

Other-net

Other-net	6 Months Ended
	Jun. 29, 2018
Other Income and Expenses [Abstract]
Other-net	Other-net Other-net expense for the second quarter and first six months of 2018 and 2017 is summarized as follows: Second Quarter Ended Six Months Ended June 29, June 30, June 29, June 30, (Thousands) 2018 2017 2018 2017 Metal consignment fees $ 2,588 $ 2,062 $ 5,017 $ 3,747 Amortization of intangible assets 561 1,232 1,334 2,277 Foreign currency exchange/translation (gain) 1,230 (336 ) 1,219 (593 ) Net (gain) loss on disposal of fixed assets (3 ) 119 23 147 Other items (63 ) 127 (356 ) 444 Total $ 4,313 $ 3,204 $ 7,237 $ 6,022

Income Taxes

Income Taxes	6 Months Ended
	Jun. 29, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes On December 22, 2017, the Tax Cuts and Jobs Act (TCJA) was signed into law. The TCJA includes a number of provisions, including: (1) the lowering of the U.S. corporate tax rate from 35% to 21% ; (2) elimination of the corporate alternative minimum tax (AMT); (3) the creation of the base erosion anti-abuse tax (BEAT, a new minimum tax); (4) a general elimination of the U.S. federal income taxes on dividends from foreign subsidiaries; (5) a new provision designed to tax global intangible low-taxed income (GILTI), which allows for the possibility of using foreign tax credits (FTCs) and a deduction of up to 50% to offset the income tax liability (subject to some limitations); (6) a new limitation on deductible interest expense; (7) the repeal of the domestic production activity deduction; and (8) limitations on the deductibility of certain executive compensation. The Company recorded income tax expense of $2.9 million in the second quarter of 2018, an effective tax rate of 20.9% against income before income taxes, and income tax expense of $1.7 million in the second quarter of 2017, an effective tax rate of 19.1% against income before income taxes. In the first six months of 2018, income tax expense of $4.5 million was calculated using an effective tax rate of 17.0% , while income tax expense of $1.6 million in the first six months of 2017 was calculated using an effective tax rate of 13.4% . In the second quarter and first six months of 2018, income tax expense differed from the U.S. Federal statutory income tax rate of 21% primarily due to the impact of foreign losses in jurisdictions that will not result in tax benefits, percentage depletion, U.S. research and development credit, the new GILTI income inclusion, the new executive compensation limitations, and a discrete tax adjustment of $0.1 million . The Company does not expect to incur a new BEAT minimum tax or an interest expense limitation. In the second quarter and first six months of 2017, income tax expense differed from the U.S Federal statutory income tax rate of 35% primarily due to the impact of percentage depletion, foreign rate differential, U.S. research and development credit, and a discrete tax benefit of $0.7 million related to officer compensation and the adoption of ASU 2016-09, Improvements to Employee Share-based Payment Accounting . As disclosed in Note G (Income Taxes) in the Company's 2017 Annual Report on Form 10-K, the Company was able to reasonably estimate certain TCJA effects and, therefore, recorded provisional adjustments associated with the deemed repatriation transition tax and remeasurement of certain deferred tax asset and liabilities. As of the second quarter of 2018, the Company's accounting for the TCJA is incomplete and the previously disclosed provisional amounts (transition tax and remeasurement of deferred taxes) continue to be provisional. The Company has not made any additional measurement-period adjustments related to the transition tax during 2018 because the calculation of the total post-1986 earnings and profits (E&P) for these foreign subsidiaries has not yet been completed. Further, the transition tax is based in part on the amount of those earnings held in cash and other specified assets. This amount may change when the Company finalizes the calculation of post-1986 foreign E&P previously deferred from U.S. federal taxation and finalizes the amounts held in cash or other specified assets. The Company is continuing to gather additional information to complete its accounting for these items and expects to complete its accounting within the prescribed measurement period. No additional income taxes have been provided for any remaining undistributed foreign earnings not subject to the transition tax, or any additional outside basis difference inherent in these entities, as these amounts continue to be indefinitely reinvested in foreign operations. The Company was able to reasonably estimate the remeasurement of certain deferred tax asset and liabilities at an initial provisional amount to be $5.0 million of additional income tax expense for the year ended December 31, 2017. The total adjustment to tax expense related to the remeasurement of certain deferred tax asset and liabilities that has been recorded to date is $4.4 million . However, the Company is continuing to gather additional information to more precisely compute the amount of the tax expense related to remeasurement. The accounting for this item is not yet complete because judgment is required with respect to the timing and deductibility of certain expenses in the Company’s income tax return. Due to the complexity of the new GILTI tax rules, the Company is continuing to evaluate this provision of the TCJA and the application of the Accounting Standards Codification 740, Income Taxes . Under U.S. GAAP, the Company is allowed to make an accounting policy choice of either (1) treating taxes due on future U.S. inclusions in taxable income related to GILTI as a current-period expense when incurred (the period cost method) or (2) factoring such amounts into the Company's measurement of its deferred taxes (the deferred method). The Company's selection of an accounting policy related to the new GILTI tax rules will depend on a number of different aspects of the estimated long-term effects of this provision under the TCJA. Therefore, the Company has not recorded any potential deferred tax effects related to the GILTI in the financial statements and has not made a policy decision regarding whether to record deferred taxes on GILTI or use the period cost method. However, the Company has included an estimate of the 2018 current GILTI impact in the annual effective tax rate for 2018.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 29, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share (EPS) The following table sets forth the computation of basic and diluted EPS: Second Quarter Ended Six Months Ended June 29, June 30, June 29, June 30, (Thousands, except per share amounts) 2018 2017 2018 2017 Numerator for basic and diluted EPS: Net income $ 11,144 $ 7,313 $ 21,708 $ 10,363 Denominator: Denominator for basic EPS: Weighted-average shares outstanding 20,221 20,012 20,178 19,991 Effect of dilutive securities: Stock appreciation rights 166 125 185 152 Restricted stock units 75 102 85 102 Performance-based restricted stock units 131 108 135 103 Diluted potential common shares 372 335 405 357 Denominator for diluted EPS: Adjusted weighted-average shares outstanding 20,593 20,347 20,583 20,348 Basic EPS $ 0.55 $ 0.37 $ 1.08 $ 0.52 Diluted EPS $ 0.54 $ 0.36 $ 1.05 $ 0.51 Securities totaling 65,112 and 349,068 for the quarters ended June 29, 2018 and June 30, 2017 , respectively, and 65,112 and 382,426 for the six months ended June 29, 2018 and June 30, 2017, respectively, were excluded from the dilution calculation as their effect would have been anti-dilutive.

Inventories

Inventories	6 Months Ended
	Jun. 29, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories on the Consolidated Balance Sheets are summarized as follows: June 29, December 31, (Thousands) 2018 2017 Raw materials and supplies $ 40,550 $ 42,958 Work in process 176,216 187,719 Finished goods 41,017 34,418 Subtotal $ 257,783 $ 265,095 Less: LIFO reserve balance 48,579 44,743 Inventories $ 209,204 $ 220,352 The liquidation of last in, first out (LIFO) inventory layers increased cost of sales by $0.1 million in both the second quarter and first six months of 2018. In both the second quarter and first six months of 2017, cost of sales was increased by $0.2 million .

Pensions and Other Post-employm

Pensions and Other Post-employment Benefits	6 Months Ended
	Jun. 29, 2018
Retirement Benefits [Abstract]
Pensions and Other Post-employment Benefits	Pensions and Other Post-employment Benefits The following is a summary of the net periodic benefit cost for the second quarter and first six months of 2018 and 2017 for the domestic pension plans (which include the defined benefit pension plan and the supplemental retirement plans) and the domestic retiree medical plan. Pension Benefits Other Benefits Second Quarter Ended Second Quarter Ended June 29, June 30, June 29, June 30, (Thousands) 2018 2017 2018 2017 Components of net periodic benefit cost (benefit) Service cost $ 1,674 $ 1,777 $ 28 $ 23 Interest cost 2,397 2,370 99 99 Expected return on plan assets (3,697 ) (3,378 ) — — Amortization of prior service benefit (30 ) (73 ) (374 ) (374 ) Amortization of net loss 1,959 1,611 — — Net periodic benefit cost (benefit) $ 2,303 $ 2,307 $ (247 ) $ (252 ) Pension Benefits Other Benefits Six Months Ended Six Months Ended June 29, June 30, June 29, June 30, (Thousands) 2018 2017 2018 2017 Components of net periodic benefit cost (benefit) Service cost $ 3,348 $ 3,496 $ 56 $ 46 Interest cost 4,794 4,726 198 198 Expected return on plan assets (7,394 ) (6,743 ) — — Amortization of prior service benefit (61 ) (194 ) (749 ) (748 ) Amortization of net loss 3,919 3,198 — — Net periodic benefit cost (benefit) $ 4,606 $ 4,483 $ (495 ) $ (504 ) The Company made contributions to the domestic defined benefit pension plan of $13.0 million and $4.0 million in the first six months of 2018 and 2017 , respectively. Beginning in 2018, the Company reports the service cost component of net periodic benefit cost in the same line item as other compensation costs in operating expenses and the non-service cost components of net periodic benefit cost in Other non-operating expenses. Additionally, Pension Benefit Guaranty Corporation premiums are reported within expected return on plan assets.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	6 Months Ended
	Jun. 29, 2018
Equity [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income (Loss) Changes in the components of accumulated other comprehensive income, including the amounts reclassified, for the second quarter and first six months of 2018 and 2017 are as follows: Gains and Losses on Cash Flow Hedges (Thousands) Foreign Currency Precious Metals Total Pension and Post-Employment Benefits Foreign Currency Translation Total Balance at March 30, 2018 $ 326 $ (238 ) $ 88 $ (98,314 ) $ (2,995 ) $ (101,221 ) Other comprehensive income (loss) before reclassifications 871 635 1,506 — (944 ) 562 Amounts reclassified from accumulated other comprehensive income 42 23 65 1,622 — 1,687 Net current period other comprehensive income (loss) before tax 913 658 1,571 1,622 (944 ) 2,249 Deferred taxes (343 ) 151 (192 ) 326 — 134 Net current period other comprehensive income (loss) after tax 1,256 507 1,763 1,296 (944 ) 2,115 Balance at June 29, 2018 $ 1,582 $ 269 $ 1,851 $ (97,018 ) $ (3,939 ) $ (99,106 ) Balance at March 31, 2017 $ 1,476 $ (100 ) $ 1,376 $ (81,601 ) $ (4,557 ) $ (84,782 ) Other comprehensive income (loss) before reclassifications (629 ) 393 (236 ) — 275 39 Amounts reclassified from accumulated other comprehensive income 47 (88 ) (41 ) 1,156 — 1,115 Net current period other comprehensive income (loss) before tax (582 ) 305 (277 ) 1,156 275 1,154 Deferred taxes (215 ) 112 (103 ) 397 — 294 Net current period other comprehensive income (loss) after tax (367 ) 193 (174 ) 759 275 860 Balance at June 30, 2017 $ 1,109 $ 93 $ 1,202 $ (80,842 ) $ (4,282 ) $ (83,922 ) Gains and Losses on Cash Flow Hedges (Thousands) Foreign Currency Precious Metals Total Pension and Post-Employment Benefits Foreign Currency Translation Total Balance at December 31, 2017 $ 959 $ (196 ) $ 763 $ (99,592 ) $ (4,108 ) $ (102,937 ) Other comprehensive income (loss) before reclassifications (327 ) 444 117 — 169 286 Amounts reclassified from accumulated other comprehensive income 419 159 578 3,248 — 3,826 Net current period other comprehensive income before tax 92 603 695 3,248 169 4,112 Deferred taxes (531 ) 138 (393 ) 674 — 281 Net current period other comprehensive income after tax 623 465 1,088 2,574 169 3,831 Balance at June 29, 2018 $ 1,582 $ 269 $ 1,851 $ (97,018 ) $ (3,939 ) $ (99,106 ) Balance at December 31, 2016 $ 1,837 $ — $ 1,837 $ (82,358 ) $ (5,660 ) $ (86,181 ) Other comprehensive income (loss) before reclassifications (881 ) 235 (646 ) — 1,378 732 Amounts reclassified from accumulated other comprehensive income (214 ) (88 ) (302 ) 2,309 — 2,007 Net current period other comprehensive income (loss) before tax (1,095 ) 147 (948 ) 2,309 1,378 2,739 Deferred taxes (367 ) 54 (313 ) 793 — 480 Net current period other comprehensive income (loss) after tax (728 ) 93 (635 ) 1,516 1,378 2,259 Balance at June 30, 2017 $ 1,109 $ 93 $ 1,202 $ (80,842 ) $ (4,282 ) $ (83,922 ) Reclassifications from accumulated other comprehensive income of gains and losses on foreign currency cash flow hedges are recorded in Other-net in the Consolidated Statements of Income. Reclassifications from accumulated other comprehensive income of gains and losses on precious metal cash flow hedges are recorded in Cost of sales in the Consolidated Statements of Income. Refer to Note M for additional details on cash flow hedges. Reclassifications from accumulated other comprehensive income for pension and post-employment benefits are included in the computation of the net periodic pension and post-employment benefit expense. Refer to Note I for additional details on pension and post-employment expenses.

Stock-based Compensation Expens

Stock-based Compensation Expense	6 Months Ended
	Jun. 29, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based Compensation Expense	Stock-based Compensation Expense Stock-based compensation expense, which includes awards settled in shares and in cash, was $2.7 million and $5.2 million in the second quarter and first six months of 2018 , respectively, compared to $2.4 million and $4.7 million in the same periods of 2017. The Company granted 65,112 stock appreciation rights (SARs) to certain employees during the first six months of 2018 . The weighted-average exercise price per share and weighted-average fair value per share of the SARs granted during the six months ended June 29, 2018 were $50.35 and $15.73 , respectively. The Company estimated the fair value of the SARs using the following weighted-average assumptions in the Black-Scholes model: Risk-free interest rate 2.58 % Dividend yield 0.8 % Volatility 31.9 % Expected term (in years) 5.5 The Company granted 59,222 stock-settled restricted stock units (RSUs) to certain employees and 14,728 stock-settled RSUs to non-employee directors during the first six months of 2018 . The Company measures the fair value of stock-settled RSUs based on the closing market price of a share of Materion common stock on the date of the grant. The weighted-average fair value per share was $50.35 and $51.60 for stock-settled RSUs granted to employees and non-employee directors, respectively, during the six months ended June 29, 2018 . RSUs are expensed over the vesting period of three years for employees and one year for non-employee directors. The Company granted stock-settled performance-based restricted stock units (PRSUs) to certain employees in the first six months of 2018 . The weighted-average fair value of the stock-settled PRSUs was $50.35 per share and will be expensed over the vesting period of three years . The final payout to the employees for all PRSUs will be based upon the Company’s return on invested capital and the total return to shareholders over the vesting period relative to a peer group’s performance over the same period. At June 29, 2018 , unearned compensation cost related to the unvested portion of all stock-based awards was approximately $9.7 million , and is expected to be recognized over the remaining vesting period of the respective grants.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 29, 2018
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments The Company measures and records financial instruments at fair value. A fair value hierarchy is used for those instruments measured at fair value that distinguishes between assumptions based on market data (observable inputs) and the Company’s assumptions (unobservable inputs). The hierarchy consists of three levels: Level 1 — Quoted market prices in active markets for identical assets and liabilities; Level 2 — Inputs other than Level 1 inputs that are either directly or indirectly observable; and Level 3 — Unobservable inputs developed using estimates and assumptions developed by the Company, which reflect those that a market participant would use. The following table summarizes the financial instruments measured at fair value in the Consolidated Balance Sheets as of June 29, 2018 and December 31, 2017 : (Thousands) Total Carrying Value in the Consolidated Balance Sheets Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) 2018 2017 2018 2017 2018 2017 2018 2017 Financial Assets Deferred compensation investments $ 2,420 $ 2,310 $ 2,420 $ 2,310 $ — $ — $ — $ — Foreign currency forward contracts 817 254 — — 817 254 — — Precious metal swaps 347 14 — — 347 14 — — Total $ 3,584 $ 2,578 $ 2,420 $ 2,310 $ 1,164 $ 268 $ — $ — Financial Liabilities Deferred compensation liability $ 2,420 $ 2,310 $ 2,420 $ 2,310 $ — $ — $ — $ — Foreign currency forward contracts 23 201 — — 23 201 — — Precious metal swaps — 269 — — — 269 — — Total $ 2,443 $ 2,780 $ 2,420 $ 2,310 $ 23 $ 470 $ — $ — The Company uses a market approach to value the assets and liabilities for financial instruments in the table above. Outstanding contracts are valued through models that utilize market observable inputs, including both spot and forward prices, for the same underlying currencies and metals. The carrying values of the other working capital items and debt in the Consolidated Balance Sheets approximate fair values as of June 29, 2018 and December 31, 2017.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activity	6 Months Ended
	Jun. 29, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activity	Derivative Instruments and Hedging Activity The Company uses derivative contracts to hedge portions of its foreign currency exposures and uses derivatives to hedge a portion of its precious metal exposures. The objectives and strategies for using derivatives in these areas are as follows: Foreign Currency. The Company sells a portion of its products to overseas customers in their local currencies, primarily the euro and yen. The Company secures foreign currency derivatives, mainly forward contracts and options, to hedge these anticipated sales transactions. The purpose of the hedge program is to protect against the reduction in the dollar value of foreign currency sales from adverse exchange rate movements. Should the dollar strengthen significantly, the decrease in the translated value of the foreign currency sales should be partially offset by gains on the hedge contracts. Depending upon the methods used, hedge contracts may limit the benefits from a weakening U.S. dollar. The use of forward contracts locks in a firm rate and eliminates any downside risk from an adverse rate movement as well as any benefit from a favorable rate movement. The Company may from time to time choose to hedge with options or a tandem of options, known as a collar. These hedging techniques can limit or eliminate the downside risk but can allow for some or all of the benefit from a favorable rate movement to be realized. Unlike a forward contract, a premium is paid for an option; collars, which are a combination of a put and call option, may have a net premium but can be structured to be cash neutral. The Company will primarily hedge with forward contracts due to the relationship between the cash outlay and the level of risk. The use of foreign currency derivative contracts is governed by policies approved by the Audit Committee of the Board of Directors. A team consisting of senior financial managers reviews the estimated exposure levels, as defined by budgets, forecasts, and other internal data, and determines the timing, amounts, and instruments to use to hedge that exposure within the confines of the policy. Management analyzes the effective hedged rates and the actual and projected gains and losses on the hedging transactions against the program objectives, targeted rates, and levels of risk assumed. Hedge contracts are typically layered in at different times for a specified exposure period in order to minimize the impact of rate movements. Precious Metals. The Company maintains the majority of its precious metal production requirements on consignment in order to reduce its working capital investment and the exposure to metal price movements. When a precious metal product is fabricated and ready for shipment to the customer, the metal is purchased out of consignment at the current market price. The price paid by the Company forms the basis for the price charged to the customer. This methodology allows for changes in either direction in the market prices of the precious metals used by the Company to be passed through to the customer, and reduces the impact changes in prices could have on the Company's margins and operating profit. The consigned metal is owned by financial institutions that charge the Company a financing fee based upon the current value of the metal on hand. In certain instances, a customer may want to establish the price for the precious metal at the time the sales order is placed rather than at the time of shipment. Setting the sales price at a different date than when the material would be purchased potentially creates an exposure to movements in the market price of the metal. Therefore, in these limited situations, the Company may elect to enter into a forward contract to purchase precious metal. The forward contract allows the Company to purchase metal at a fixed price on a specific future date. The price in the forward contract serves as the basis for the price to be charged to the customer. By doing so, the selling price and purchase price are matched, and the Company's price exposure is reduced. The Company refines precious metal-containing materials for its customers and typically will purchase the refined metal from the customer at current market prices. In limited circumstances, the customer may want to fix the price to be paid at the time of the order as opposed to when the material is refined. The customer may also want to fix the price for a set period of time. The Company may then elect to enter into a hedge contract, either a forward contract or a swap, to fix the price for the estimated quantity of metal to be purchased, thereby reducing the exposure to adverse movements in the price of the metal. In certain circumstances, the Company also refines metal from the customer and may retain a portion of the refined metal as payment. The Company may elect to enter into a forward contract to sell precious metal to reduce the Company's price exposure. The Company may from time to time elect to purchase precious metal and hold in inventory rather than on consignment due to potential credit line limitations or other factors. These purchases are typically held for a short duration. A forward contract will be secured at the time of the purchase to fix the price to be used when the metal is transferred back to the consignment line, thereby limiting any price exposure during the time when the metal was owned. The Company will only enter into a derivative contract if there is an underlying identified exposure. Contracts are typically held until maturity. The Company does not engage in derivative trading activities and does not use derivatives for speculative purposes. The Company only uses currency hedge contracts that are denominated in the same currency as the underlying exposure and precious metal hedge contracts denominated in the same metal as the underlying exposure. All derivatives are recorded on the balance sheet at fair value. If the derivative is designated and effective as a cash flow hedge, changes in the fair value of the derivative are recognized in other comprehensive income (OCI) until the hedged item is recognized in earnings. The ineffective portion of a derivative’s fair value, if any, is recognized in earnings immediately. If a derivative is not a hedge, changes in the fair value are adjusted through income. The fair values of the outstanding derivatives are recorded on the balance sheet as assets (if the derivatives are in a gain position) or liabilities (if the derivatives are in a loss position). The fair values will also be classified as short-term or long-term depending upon their maturity dates. The following table summarizes the notional amount and the fair value of the Company’s outstanding derivatives not designated as hedging instruments and balance sheet classification as of June 29, 2018 and December 31, 2017 : June 29, 2018 December 31, 2017 (Thousands) Notional Amount Fair Value Notional Amount Fair Value Foreign currency forward contracts - euro Prepaid expenses $ 25,377 $ 559 $ 13,981 $ 127 Other liabilities and accrued items — — — — Total $ 25,377 $ 559 $ 13,981 $ 127 These outstanding foreign currency derivatives were related to intercompany loans. Other-net included foreign currency gains relating to these derivatives of $1.6 million and $1.1 million during the second quarter and first six months of 2018, respectively, compared to foreign currency losses of $0.5 million and $0.6 million during the same periods in 2017, respectively. The following table summarizes the notional amount and the fair value of the Company’s outstanding derivatives designated as cash flow hedges and balance sheet classification as of June 29, 2018 and December 31, 2017 : June 29, 2018 December 31, 2017 (Thousands) Notional Amount Fair Value Notional Amount Fair Value Prepaid expenses Foreign currency forward contracts - yen $ 847 $ 29 $ 5,673 $ 91 Foreign currency forward contracts - euro 9,387 229 5,026 36 Precious metal swaps 8,548 322 — — Total 18,782 580 10,699 127 Other assets Precious metal swaps 540 25 880 14 Total 540 25 880 14 Other liabilities and accrued items Foreign currency forward contracts - yen 2,158 (19 ) — — Foreign currency forward contracts - euro 819 (4 ) 13,583 (201 ) Precious metal swaps 188 — 10,067 (255 ) Total 3,165 (23 ) 23,650 (456 ) Other long-term liabilities Precious metal swaps — — 789 (14 ) Total $ 22,487 $ 582 $ 36,018 $ (329 ) All of these contracts were designated and effective as cash flow hedges. No ineffectiveness expense was recorded in the second quarter and first six months of 2018 or 2017. Changes in the fair value of outstanding cash flow hedges recorded in OCI for the first six months of 2018 and 2017 totaled an increase of $0.1 million and a decrease of $0.6 million , respectively. The Company expects to relieve substantially the entire balance in OCI as of June 29, 2018 to the Consolidated Statements of Income within the next 18-month period. Refer to Note J for additional OCI details.

Contingencies

Contingencies	6 Months Ended
	Jun. 29, 2018
Loss Contingency [Abstract]
Commitments and Contingencies Disclosure [Text Block]	Contingencies Legal Proceedings . For information regarding legal proceedings relating to Chronic Beryllium Disease Claims , refer to Note R ("Contingencies and Commitments") in the Company's 2017 Annual Report on Form 10-K. Other Litigation. The Company is party to several pending legal proceedings and claims arising in the normal course of business. The Company records a liability when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. In the event the Company determines that a loss is not probable, but is reasonably possible, and it becomes possible to develop what the Company believes to be a reasonable range of possible loss, then the Company will include disclosure related to such matters. To the extent there is a reasonable possibility that the losses could exceed any amounts accrued, the Company will adjust the accrual in the period the determination is made, disclose an estimate of the additional loss or range of loss, indicate that the estimate is immaterial with respect to its financial statements as a whole or, if the amount of such adjustment cannot be reasonably estimated, disclose that an estimate cannot be made. Environmental Proceedings. The Company has an active environmental compliance program and records reserves for the probable cost of identified environmental remediation projects. The reserves are established based upon analyses conducted by the Company’s engineers and outside consultants and are adjusted from time to time based upon ongoing studies, the difference between actual and estimated costs, and other factors. The reserves may also be affected by rulings and negotiations with regulatory agencies. The undiscounted reserve balance was $6.4 million at June 29, 2018 and $6.5 million at December 31, 2017 . Environmental projects tend to be long-term, and the final actual remediation costs may differ from the amounts currently recorded.

Basis of Accounting (Policies)

Basis of Accounting (Policies)	6 Months Ended
	Jun. 29, 2018
Accounting Policies [Abstract]
Basis of Accounting	Basis of Presentation: In management’s opinion, the accompanying consolidated financial statements of Materion Corporation and its subsidiaries (referred to herein as the Company, our, we, or us) contain all of the adjustments necessary to present fairly the financial position, results of operations, and cash flows for the interim periods reported. All adjustments were of a normal and recurring nature. Certain amounts in prior periods have been reclassified to conform to the 2018 consolidated financial statement presentation. These financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company's 2017 Annual Report on Form 10-K. The interim period results are not necessarily indicative of the results to be expected for the full year.

New Pronouncements (Policies)

New Pronouncements (Policies)	6 Months Ended
	Jun. 29, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
New Accounting Pronouncements	New Pronouncements Adopted: In March 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, which requires an employer to report the service cost component of net benefit cost in the same line item as other compensation costs arising from services rendered by pertinent employees during the period. This ASU requires non-service cost components of net benefit cost to be presented in a caption below the Company's Operating profit and allows only the service cost component to be eligible for capitalization. This ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those periods, with early adoption permitted. The amendments were applied retrospectively for the presentation of service cost and other components of net benefit cost on the income statement and prospectively for the capitalization of service cost and net periodic postretirement benefits in assets. The application of ASU 2017-07 resulted in an increase to Operating profit of $0.4 million and $0.6 million for the second quarter and first six months of 2017, respectively, which was offset by a corresponding increase in Other non-operating expense, net. The adoption of this ASU did not have a material effect on the Company's financial condition or liquidity. The Company utilized this ASU's practical expedient, which permits the Company to use the amounts disclosed in its Pensions and Other Post-employment Benefits note for the prior comparative periods as the estimation basis for applying the retrospective presentation requirements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (ASC 606), which supersedes previous revenue recognition guidance. The Company adopted the new standard using the modified retrospective method as of January 1, 2018. Prior periods were not retrospectively adjusted. This approach was applied to all contracts not completed as of January 1, 2018. The new standard primarily impacted the Company's timing of revenue recognition for certain contracts and subcontracts with the United States (U.S.) government that contain termination for convenience clauses, and due to the cumulative impact of adopting ASC 606, the Company recorded a reduction to beginning retained earnings of $0.4 million, net of tax as summarized below: (Thousands) December 31, 2017 Adjustments due to ASC 606 January 1, 2018 Assets Unbilled receivables $ — $ 2,658 $ 2,658 Inventories 220,352 (2,059 ) 218,293 Liabilities and Shareholders’ Equity Other liabilities and accrued items $ 28,044 61 28,105 Deferred income taxes 213 113 326 Retained earnings 536,116 425 536,541 The adoption of the standard did not have a material impact to the Company's consolidated financial statements. Refer to Note B for additional disclosures relating to ASC 606. New Pronouncements Issued: In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities , which amends and simplifies existing guidance to allow companies to more accurately present the economic effects of risk management activities in the financial statements. This ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those periods, with early adoption permitted. The Company is currently evaluating the impact of adopting this new guidance on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases , which eliminates the off-balance-sheet accounting for leases. The new guidance will require lessees to report their operating leases as both an asset and liability on the balance sheet and disclose key information about leasing arrangements. The Company will adopt this ASU on January 1, 2019. In preparation for the adoption, the Company, along with an outside consultant, has executed on its project plan to identify a complete lease population, analyze lease agreements, and evaluate technology solutions. Currently, this ASU is required to be applied on a modified retrospective basis. The FASB has proposed another transition method in addition to the existing requirements to transition to the new lease standard by recognizing a cumulative effect adjustment to the opening balance of retained earnings in the period of adoption. The Company has not decided on its transition method to adopt this new guidance. No other recently issued or effective ASUs had, or are expected to have, a material effect on the Company's results of operations, financial condition, or liquidity.

Revenue Recognition Accounting

Revenue Recognition Accounting Policy (Policies)	6 Months Ended
	Jun. 29, 2018
Accounting Policies [Abstract]
Revenue Recognition, Policy [Policy Text Block]	Net sales consist primarily of revenue from the sale of precious and non-precious specialty metals, beryllium and copper-based alloys, beryllium composites, and other products into numerous end markets. The Company requires an agreement with a customer that creates enforceable rights and performance obligations. The Company generally recognizes revenue, in an amount that reflects the consideration to which it expects to be entitled, upon satisfaction of a performance obligation by transferring control over a product to the customer. Control over the product is generally transferred to the customer when the Company has a present right to payment, the customer has legal title, the customer has physical possession, the customer has the significant risks and rewards of ownership, and/or the customer has accepted the product. Shipping and Handling Costs : The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill our promise to transfer the associated products. Accordingly, customer payments of shipping and handling costs are recorded as a component of net sales, and related costs are recorded as a component of cost of sales. Taxes Collected from Customers and Remitted to Governmental Authorities : Revenue is recorded net of taxes collected from customers that are remitted to governmental authorities, with the collected taxes recorded as current liabilities until remitted to the relevant government authority. Product Warranty : Substantially all of the Company’s customer contracts contain a warranty that provides assurance that the purchased product will function as expected and in accordance with certain specifications. The warranty is intended to safeguard the customer against existing defects and does not provide any incremental service to the customer. Transaction Price Allocated to Future Performance Obligations: ASC 606 requires that the Company disclose the aggregate amount of transaction price that is allocated to performance obligations that have not yet been satisfied at June 29, 2018. Remaining performance obligations include noncancelable purchase orders and customer contracts. The guidance provides certain practical expedients that limit this requirement. As such, the Company does not disclose the value of unsatisfied performance obligations for contracts with an original expected length of one year or less. After considering the practical expedient, at June 29, 2018, the aggregate amount of the transaction price allocated to remaining performance obligations was approximately $36.0 million , of which $7.5 million will be recognized in 2018. Contract Costs : 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. These costs primarily relate to sales commissions, which are included in selling, general, and administrative expenses.

Accounting Policies (Tables)

Accounting Policies (Tables)	3 Months Ended
	Jun. 29, 2018
Accounting Policies [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]	The new standard primarily impacted the Company's timing of revenue recognition for certain contracts and subcontracts with the United States (U.S.) government that contain termination for convenience clauses, and due to the cumulative impact of adopting ASC 606, the Company recorded a reduction to beginning retained earnings of $0.4 million, net of tax as summarized below: (Thousands) December 31, 2017 Adjustments due to ASC 606 January 1, 2018 Assets Unbilled receivables $ — $ 2,658 $ 2,658 Inventories 220,352 (2,059 ) 218,293 Liabilities and Shareholders’ Equity Other liabilities and accrued items $ 28,044 61 28,105 Deferred income taxes 213 113 326 Retained earnings 536,116 425 536,541

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	Jun. 29, 2018
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset and Liability	Contract Balances : The timing of revenue recognition, billings and cash collections resulted in the following contract assets and contract liabilities: (Thousands) June 29, 2018 January 1, 2018 $ change % change Accounts receivable, trade $ 128,450 $ 122,393 $ 6,057 5 % Unbilled receivables 6,341 2,658 3,683 139 % Unearned revenue 7,576 5,451 2,125 39 %

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
	Jun. 29, 2018
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	The final purchase price allocation for the acquisition is as follows: (Thousands) Amount Assets: Inventories $ 7,221 Prepaid and other current assets 2,270 Long-term deferred income taxes 14 Property, plant, and equipment 6,501 Intangible assets 3,649 Goodwill 3,574 Total assets acquired $ 23,229 Liabilities: Other liabilities and accrued items $ 984 Other long-term liabilities 449 Retirement and post-employment benefits 5,292 Total liabilities assumed $ 6,725 Total purchase price $ 16,504

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 29, 2018
Segment Reporting [Abstract]
Segment Reporting	(Thousands) Performance Alloys and Composites Advanced Materials Precision Coatings Other Total Second Quarter 2018 Net sales $ 129,765 $ 150,324 $ 28,996 $ — $ 309,085 Intersegment sales 3 11,400 — — 11,403 Value-added sales 110,150 57,267 23,393 (908 ) 189,902 Operating profit (loss) 12,309 5,572 2,233 (4,922 ) 15,192 Second Quarter 2017 Net sales $ 108,541 $ 157,044 $ 30,257 $ — $ 295,842 Intersegment sales 4 13,247 — — 13,251 Value-added sales 92,686 62,041 22,613 (1,241 ) 176,099 Operating profit (loss) 5,548 8,670 2,314 (6,430 ) 10,102 First Six Months 2018 Net sales $ 248,001 $ 303,869 $ 60,682 $ — $ 612,552 Intersegment sales 31 23,052 — — 23,083 Value-added sales 210,449 115,550 47,034 (1,818 ) 371,215 Operating profit (loss) 22,170 11,470 5,608 (10,805 ) 28,443 First Six Months 2017 Net sales $ 201,094 $ 271,780 $ 63,637 $ — $ 536,511 Intersegment sales 59 29,694 — — 29,753 Value-added sales 171,897 109,329 45,914 (2,060 ) 325,080 Operating profit (loss) 5,737 15,117 4,532 (11,597 ) 13,789
Disaggregation of Revenue	The following table disaggregates revenue for each segment by end market for the second quarter and first six months of 2018: (Thousands) Performance Alloys and Composites Advanced Materials Precision Coatings Other Total Second Quarter 2018 End Market Consumer Electronics $ 26,469 $ 88,230 $ 5,035 $ — $ 119,734 Industrial Components 25,025 11,501 2,900 — 39,426 Energy 10,202 16,311 8 — 26,521 Automotive Electronics 19,879 — 469 — 20,348 Defense 14,932 3,353 4,887 — 23,172 Medical 1,816 4,712 14,455 — 20,983 Telecom Infrastructure 10,890 7,968 — — 18,858 Other 20,552 18,249 1,242 — 40,043 Total $ 129,765 $ 150,324 $ 28,996 $ — $ 309,085 First Six Months 2018 End Market Consumer Electronics $ 51,827 $ 170,280 $ 9,314 $ — $ 231,421 Industrial Components 53,546 24,800 5,392 — 83,738 Energy 18,006 39,747 8 — 57,761 Automotive Electronics 38,849 — 691 — 39,540 Defense 21,554 7,838 9,202 — 38,594 Medical 3,559 9,121 33,525 — 46,205 Telecom Infrastructure 18,984 15,325 59 — 34,368 Other 41,676 36,758 2,491 — 80,925 Total $ 248,001 $ 303,869 $ 60,682 $ — $ 612,552

Other-net (Tables)

Other-net (Tables)	6 Months Ended
	Jun. 29, 2018
Other Income and Expenses [Abstract]
Summary of Other-Net Expense	Other-net expense for the second quarter and first six months of 2018 and 2017 is summarized as follows: Second Quarter Ended Six Months Ended June 29, June 30, June 29, June 30, (Thousands) 2018 2017 2018 2017 Metal consignment fees $ 2,588 $ 2,062 $ 5,017 $ 3,747 Amortization of intangible assets 561 1,232 1,334 2,277 Foreign currency exchange/translation (gain) 1,230 (336 ) 1,219 (593 ) Net (gain) loss on disposal of fixed assets (3 ) 119 23 147 Other items (63 ) 127 (356 ) 444 Total $ 4,313 $ 3,204 $ 7,237 $ 6,022

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 29, 2018
Earnings Per Share [Abstract]
Computation of basic and diluted earnings per share	The following table sets forth the computation of basic and diluted EPS: Second Quarter Ended Six Months Ended June 29, June 30, June 29, June 30, (Thousands, except per share amounts) 2018 2017 2018 2017 Numerator for basic and diluted EPS: Net income $ 11,144 $ 7,313 $ 21,708 $ 10,363 Denominator: Denominator for basic EPS: Weighted-average shares outstanding 20,221 20,012 20,178 19,991 Effect of dilutive securities: Stock appreciation rights 166 125 185 152 Restricted stock units 75 102 85 102 Performance-based restricted stock units 131 108 135 103 Diluted potential common shares 372 335 405 357 Denominator for diluted EPS: Adjusted weighted-average shares outstanding 20,593 20,347 20,583 20,348 Basic EPS $ 0.55 $ 0.37 $ 1.08 $ 0.52 Diluted EPS $ 0.54 $ 0.36 $ 1.05 $ 0.51

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 29, 2018
Inventory Disclosure [Abstract]
Summary of Inventories	Inventories on the Consolidated Balance Sheets are summarized as follows: June 29, December 31, (Thousands) 2018 2017 Raw materials and supplies $ 40,550 $ 42,958 Work in process 176,216 187,719 Finished goods 41,017 34,418 Subtotal $ 257,783 $ 265,095 Less: LIFO reserve balance 48,579 44,743 Inventories $ 209,204 $ 220,352

Pensions and Other Post-emplo31

Pensions and Other Post-employment Benefits (Tables)	6 Months Ended
	Jun. 29, 2018
Retirement Benefits [Abstract]
Components of Net Periodic Benefit Cost	The following is a summary of the net periodic benefit cost for the second quarter and first six months of 2018 and 2017 for the domestic pension plans (which include the defined benefit pension plan and the supplemental retirement plans) and the domestic retiree medical plan. Pension Benefits Other Benefits Second Quarter Ended Second Quarter Ended June 29, June 30, June 29, June 30, (Thousands) 2018 2017 2018 2017 Components of net periodic benefit cost (benefit) Service cost $ 1,674 $ 1,777 $ 28 $ 23 Interest cost 2,397 2,370 99 99 Expected return on plan assets (3,697 ) (3,378 ) — — Amortization of prior service benefit (30 ) (73 ) (374 ) (374 ) Amortization of net loss 1,959 1,611 — — Net periodic benefit cost (benefit) $ 2,303 $ 2,307 $ (247 ) $ (252 ) Pension Benefits Other Benefits Six Months Ended Six Months Ended June 29, June 30, June 29, June 30, (Thousands) 2018 2017 2018 2017 Components of net periodic benefit cost (benefit) Service cost $ 3,348 $ 3,496 $ 56 $ 46 Interest cost 4,794 4,726 198 198 Expected return on plan assets (7,394 ) (6,743 ) — — Amortization of prior service benefit (61 ) (194 ) (749 ) (748 ) Amortization of net loss 3,919 3,198 — — Net periodic benefit cost (benefit) $ 4,606 $ 4,483 $ (495 ) $ (504 )

Accumulated Other Comprehensi32

Accumulated Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 29, 2018
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Changes in the components of accumulated other comprehensive income, including the amounts reclassified, for the second quarter and first six months of 2018 and 2017 are as follows: Gains and Losses on Cash Flow Hedges (Thousands) Foreign Currency Precious Metals Total Pension and Post-Employment Benefits Foreign Currency Translation Total Balance at March 30, 2018 $ 326 $ (238 ) $ 88 $ (98,314 ) $ (2,995 ) $ (101,221 ) Other comprehensive income (loss) before reclassifications 871 635 1,506 — (944 ) 562 Amounts reclassified from accumulated other comprehensive income 42 23 65 1,622 — 1,687 Net current period other comprehensive income (loss) before tax 913 658 1,571 1,622 (944 ) 2,249 Deferred taxes (343 ) 151 (192 ) 326 — 134 Net current period other comprehensive income (loss) after tax 1,256 507 1,763 1,296 (944 ) 2,115 Balance at June 29, 2018 $ 1,582 $ 269 $ 1,851 $ (97,018 ) $ (3,939 ) $ (99,106 ) Balance at March 31, 2017 $ 1,476 $ (100 ) $ 1,376 $ (81,601 ) $ (4,557 ) $ (84,782 ) Other comprehensive income (loss) before reclassifications (629 ) 393 (236 ) — 275 39 Amounts reclassified from accumulated other comprehensive income 47 (88 ) (41 ) 1,156 — 1,115 Net current period other comprehensive income (loss) before tax (582 ) 305 (277 ) 1,156 275 1,154 Deferred taxes (215 ) 112 (103 ) 397 — 294 Net current period other comprehensive income (loss) after tax (367 ) 193 (174 ) 759 275 860 Balance at June 30, 2017 $ 1,109 $ 93 $ 1,202 $ (80,842 ) $ (4,282 ) $ (83,922 ) Gains and Losses on Cash Flow Hedges (Thousands) Foreign Currency Precious Metals Total Pension and Post-Employment Benefits Foreign Currency Translation Total Balance at December 31, 2017 $ 959 $ (196 ) $ 763 $ (99,592 ) $ (4,108 ) $ (102,937 ) Other comprehensive income (loss) before reclassifications (327 ) 444 117 — 169 286 Amounts reclassified from accumulated other comprehensive income 419 159 578 3,248 — 3,826 Net current period other comprehensive income before tax 92 603 695 3,248 169 4,112 Deferred taxes (531 ) 138 (393 ) 674 — 281 Net current period other comprehensive income after tax 623 465 1,088 2,574 169 3,831 Balance at June 29, 2018 $ 1,582 $ 269 $ 1,851 $ (97,018 ) $ (3,939 ) $ (99,106 ) Balance at December 31, 2016 $ 1,837 $ — $ 1,837 $ (82,358 ) $ (5,660 ) $ (86,181 ) Other comprehensive income (loss) before reclassifications (881 ) 235 (646 ) — 1,378 732 Amounts reclassified from accumulated other comprehensive income (214 ) (88 ) (302 ) 2,309 — 2,007 Net current period other comprehensive income (loss) before tax (1,095 ) 147 (948 ) 2,309 1,378 2,739 Deferred taxes (367 ) 54 (313 ) 793 — 480 Net current period other comprehensive income (loss) after tax (728 ) 93 (635 ) 1,516 1,378 2,259 Balance at June 30, 2017 $ 1,109 $ 93 $ 1,202 $ (80,842 ) $ (4,282 ) $ (83,922 )

Stock-based Compensation Expe33

Stock-based Compensation Expense Tables (Tables)	6 Months Ended
	Jun. 29, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule Of Share Based Payment Award SARs Valuation Assumptions [Table Text Block]	The Company estimated the fair value of the SARs using the following weighted-average assumptions in the Black-Scholes model: Risk-free interest rate 2.58 % Dividend yield 0.8 % Volatility 31.9 % Expected term (in years) 5.5

Fair Value of Financial Instr34

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 29, 2018
Fair Value Disclosures [Abstract]
Summary of Fair Value Information and Derivative Financial Instruments	The following table summarizes the financial instruments measured at fair value in the Consolidated Balance Sheets as of June 29, 2018 and December 31, 2017 : (Thousands) Total Carrying Value in the Consolidated Balance Sheets Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) 2018 2017 2018 2017 2018 2017 2018 2017 Financial Assets Deferred compensation investments $ 2,420 $ 2,310 $ 2,420 $ 2,310 $ — $ — $ — $ — Foreign currency forward contracts 817 254 — — 817 254 — — Precious metal swaps 347 14 — — 347 14 — — Total $ 3,584 $ 2,578 $ 2,420 $ 2,310 $ 1,164 $ 268 $ — $ — Financial Liabilities Deferred compensation liability $ 2,420 $ 2,310 $ 2,420 $ 2,310 $ — $ — $ — $ — Foreign currency forward contracts 23 201 — — 23 201 — — Precious metal swaps — 269 — — — 269 — — Total $ 2,443 $ 2,780 $ 2,420 $ 2,310 $ 23 $ 470 $ — $ —

Derivative Instruments and He35

Derivative Instruments and Hedging Activity Tables (Tables)	6 Months Ended
	Jun. 29, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DerivativeInstrumentsNonHedging [Table Text Block]	The following table summarizes the notional amount and the fair value of the Company’s outstanding derivatives not designated as hedging instruments and balance sheet classification as of June 29, 2018 and December 31, 2017 : June 29, 2018 December 31, 2017 (Thousands) Notional Amount Fair Value Notional Amount Fair Value Foreign currency forward contracts - euro Prepaid expenses $ 25,377 $ 559 $ 13,981 $ 127 Other liabilities and accrued items — — — — Total $ 25,377 $ 559 $ 13,981 $ 127
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]	The following table summarizes the notional amount and the fair value of the Company’s outstanding derivatives designated as cash flow hedges and balance sheet classification as of June 29, 2018 and December 31, 2017 : June 29, 2018 December 31, 2017 (Thousands) Notional Amount Fair Value Notional Amount Fair Value Prepaid expenses Foreign currency forward contracts - yen $ 847 $ 29 $ 5,673 $ 91 Foreign currency forward contracts - euro 9,387 229 5,026 36 Precious metal swaps 8,548 322 — — Total 18,782 580 10,699 127 Other assets Precious metal swaps 540 25 880 14 Total 540 25 880 14 Other liabilities and accrued items Foreign currency forward contracts - yen 2,158 (19 ) — — Foreign currency forward contracts - euro 819 (4 ) 13,583 (201 ) Precious metal swaps 188 — 10,067 (255 ) Total 3,165 (23 ) 23,650 (456 ) Other long-term liabilities Precious metal swaps — — 789 (14 ) Total $ 22,487 $ 582 $ 36,018 $ (329 )

New Prouncements Adopted (Detai

New Prouncements Adopted (Details) - USD ($) $ in Thousands	Jan. 01, 2018	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other non-operating expense - net		$ 437	$ 368	$ 879	$ 635
Adjustments for New Accounting Pronouncement [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect on Retained Earnings, Net of Tax	$ 400

New Pronouncements Adopted (Det

New Pronouncements Adopted (Details 1) - USD ($) $ in Thousands	Jun. 29, 2018	Jan. 01, 2018	Dec. 31, 2017
Retained Earnings Adjustments [Line Items]
Unbilled receivables		$ 2,658	$ 0
Inventories	$ 209,204	218,293	220,352
Other liabilities and accrued items	27,182	28,105	28,044
Long-term deferred income taxes	210	326	213
Retained earnings	$ 553,523	536,541	$ 536,116
Adjustments for New Accounting Pronouncement [Member]
Retained Earnings Adjustments [Line Items]
Unbilled receivables		2,658
Inventories		(2,059)
Other liabilities and accrued items		61
Long-term deferred income taxes		113
Retained earnings		$ 425

Revenue Recognition (Details)

Revenue Recognition (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jan. 01, 2018
Capitalized Contract Cost [Line Items]
Increase (Decrease) in Unearned Revenue	$ 2,132	$ 1,685
Trade Accounts Receivable
Capitalized Contract Cost [Line Items]
Accounts Receivable, Trade	128,450		$ 122,393
Change in Accounts Receivable, Trade	$ 6,057
Contract Asset Percent Change	5.00%
Unbilled Receivables
Capitalized Contract Cost [Line Items]
Unbilled Contracts Receivable	$ 6,341		2,658
Change in Unbilled Receivables	$ 3,683
Contract Asset Percent Change	139.00%
UnearnedRevenue
Capitalized Contract Cost [Line Items]
Deferred Revenue	$ 7,576		$ 5,451
Increase (Decrease) in Unearned Revenue	$ 2,125
Contract Liability Percent Change	39.00%

Revenue Recognition (Details 1)

Revenue Recognition (Details 1) $ in Millions	Jun. 29, 2018USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	$ 36
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-06-29
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	$ 7.5

Acquisitions (Details)

Acquisitions (Details) $ in Thousands	Feb. 28, 2017USD ($)
Business Acquisition [Line Items]
Inventories	$ 7,221
Prepaid and other current assets	2,270
Long-term deferred income taxes	14
Property, plant, and equipment	6,501
Intangible Assets	3,649
Goodwill	3,574
Total assets acquired	23,229
Other liabilities and accrued items	984
Other long-term liabilities	449
Retirement and post-employment benefits	5,292
Total liabilities assumed	6,725
Total purchase price	$ 16,504

Acquisitions Textual (Details)

Acquisitions Textual (Details) $ in Thousands	Feb. 28, 2017USD ($)
Business Combinations [Abstract]
Total purchase price	$ 16,504

Segment Reporting (Detail)

Segment Reporting (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Segment Reporting Information
Net sales	$ 309,085	$ 295,842	$ 612,552	$ 536,511
Intersegment sales	11,403	13,251	23,083	29,753
Value-added sales	189,902	176,099	371,215	325,080
Operating profit (loss)	15,192	10,102	28,443	13,789
Performance Alloys and Composites
Segment Reporting Information
Net sales	129,765	108,541	248,001	201,094
Intersegment sales	3	4	31	59
Value-added sales	110,150	92,686	210,449	171,897
Operating profit (loss)	12,309	5,548	22,170	5,737
Advanced Materials
Segment Reporting Information
Net sales	150,324	157,044	303,869	271,780
Intersegment sales	11,400	13,247	23,052	29,694
Value-added sales	57,267	62,041	115,550	109,329
Operating profit (loss)	5,572	8,670	11,470	15,117
Precision Coatings
Segment Reporting Information
Net sales	28,996	30,257	60,682	63,637
Intersegment sales	0	0	0	0
Value-added sales	23,393	22,613	47,034	45,914
Operating profit (loss)	2,233	2,314	5,608	4,532
Other
Segment Reporting Information
Net sales	0	0	0	0
Intersegment sales	0	0	0	0
Value-added sales	(908)	(1,241)	(1,818)	(2,060)
Operating profit (loss)	$ (4,922)	$ (6,430)	$ (10,805)	$ (11,597)

Segment Reporting (Details 1)

Segment Reporting (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 309,085	$ 295,842	$ 612,552	$ 536,511
Consumer Electronics
Disaggregation of Revenue [Line Items]
Net sales	119,734		231,421
Industrial Components
Disaggregation of Revenue [Line Items]
Net sales	39,426		83,738
Energy
Disaggregation of Revenue [Line Items]
Net sales	26,521		57,761
Automotive Electronics
Disaggregation of Revenue [Line Items]
Net sales	20,348		39,540
Defense
Disaggregation of Revenue [Line Items]
Net sales	23,172		38,594
Medical
Disaggregation of Revenue [Line Items]
Net sales	20,983		46,205
Telecom Infrastructure
Disaggregation of Revenue [Line Items]
Net sales	18,858		34,368
Other End Market
Disaggregation of Revenue [Line Items]
Net sales	40,043		80,925
Performance Alloys and Composites
Disaggregation of Revenue [Line Items]
Net sales	129,765	108,541	248,001	201,094
Performance Alloys and Composites | Consumer Electronics
Disaggregation of Revenue [Line Items]
Net sales	26,469		51,827
Performance Alloys and Composites | Industrial Components
Disaggregation of Revenue [Line Items]
Net sales	25,025		53,546
Performance Alloys and Composites | Energy
Disaggregation of Revenue [Line Items]
Net sales	10,202		18,006
Performance Alloys and Composites | Automotive Electronics
Disaggregation of Revenue [Line Items]
Net sales	19,879		38,849
Performance Alloys and Composites | Defense
Disaggregation of Revenue [Line Items]
Net sales	14,932		21,554
Performance Alloys and Composites | Medical
Disaggregation of Revenue [Line Items]
Net sales	1,816		3,559
Performance Alloys and Composites | Telecom Infrastructure
Disaggregation of Revenue [Line Items]
Net sales	10,890		18,984
Performance Alloys and Composites | Other End Market
Disaggregation of Revenue [Line Items]
Net sales	20,552		41,676
Advanced Materials
Disaggregation of Revenue [Line Items]
Net sales	150,324	157,044	303,869	271,780
Advanced Materials | Consumer Electronics
Disaggregation of Revenue [Line Items]
Net sales	88,230		170,280
Advanced Materials | Industrial Components
Disaggregation of Revenue [Line Items]
Net sales	11,501		24,800
Advanced Materials | Energy
Disaggregation of Revenue [Line Items]
Net sales	16,311		39,747
Advanced Materials | Automotive Electronics
Disaggregation of Revenue [Line Items]
Net sales	0		0
Advanced Materials | Defense
Disaggregation of Revenue [Line Items]
Net sales	3,353		7,838
Advanced Materials | Medical
Disaggregation of Revenue [Line Items]
Net sales	4,712		9,121
Advanced Materials | Telecom Infrastructure
Disaggregation of Revenue [Line Items]
Net sales	7,968		15,325
Advanced Materials | Other End Market
Disaggregation of Revenue [Line Items]
Net sales	18,249		36,758
Precision Coatings
Disaggregation of Revenue [Line Items]
Net sales	28,996	30,257	60,682	63,637
Precision Coatings | Consumer Electronics
Disaggregation of Revenue [Line Items]
Net sales	5,035		9,314
Precision Coatings | Industrial Components
Disaggregation of Revenue [Line Items]
Net sales	2,900		5,392
Precision Coatings | Energy
Disaggregation of Revenue [Line Items]
Net sales	8		8
Precision Coatings | Automotive Electronics
Disaggregation of Revenue [Line Items]
Net sales	469		691
Precision Coatings | Defense
Disaggregation of Revenue [Line Items]
Net sales	4,887		9,202
Precision Coatings | Medical
Disaggregation of Revenue [Line Items]
Net sales	14,455		33,525
Precision Coatings | Telecom Infrastructure
Disaggregation of Revenue [Line Items]
Net sales	0		59
Precision Coatings | Other End Market
Disaggregation of Revenue [Line Items]
Net sales	1,242		2,491
Other
Disaggregation of Revenue [Line Items]
Net sales	0	$ 0	0	$ 0
Other | Consumer Electronics
Disaggregation of Revenue [Line Items]
Net sales	0		0
Other | Industrial Components
Disaggregation of Revenue [Line Items]
Net sales	0		0
Other | Energy
Disaggregation of Revenue [Line Items]
Net sales	0		0
Other | Automotive Electronics
Disaggregation of Revenue [Line Items]
Net sales	0		0
Other | Defense
Disaggregation of Revenue [Line Items]
Net sales	0		0
Other | Medical
Disaggregation of Revenue [Line Items]
Net sales	0		0
Other | Telecom Infrastructure
Disaggregation of Revenue [Line Items]
Net sales	0		0
Other | Other End Market
Disaggregation of Revenue [Line Items]
Net sales	$ 0		$ 0

Other-net (Detail)

Other-net (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Other Income and Expenses [Abstract]
Metal consignment fees	$ 2,588	$ 2,062	$ 5,017	$ 3,747
Amortization of Intangible Assets	561	1,232	1,334	2,277
Foreign currency exchange/translation (gain)	1,230	(336)	1,219	(593)
Net loss (gain) on disposal of fixed assets	(3)	119	23	147
Other items	(63)	127	(356)	444
Total	$ 4,313	$ 3,204	$ 7,237	$ 6,022

Income Taxes Details (Details)

Income Taxes Details (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. Federal Statutory Rate	21.00%	35.00%	21.00%	35.00%	35.00%
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, GILTI Percentage			50.00%
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	$ 100,000			$ (700,000)
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit)			$ 4,400,000		$ 5,000,000
Income tax expense	$ 2,944,000	$ 1,726,000	$ 4,459,000	$ 1,603,000
Effective tax rate	20.90%	19.10%	17.00%	13.40%

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Numerator For Basic And Diluted EPS:
Net income	$ 11,144	$ 7,313	$ 21,708	$ 10,363
Denominator for basic EPS:
Weighted-average shares outstanding	20,221	20,012	20,178	19,991
Effect of dilutive securities:
Diluted potential common shares (in shares)	372	335	405	357
Denominator for diluted EPS:
Adjusted weighted-average shares outstanding	20,593	20,347	20,583	20,348
Basic EPS (in usd per share)	$ 0.55	$ 0.37	$ 1.08	$ 0.52
Diluted EPS (in usd per share)	$ 0.54	$ 0.36	$ 1.05	$ 0.51
Stock Appreciation Rights (SARs)
Effect of dilutive securities:
Dilutive effect of share-based compensation (in shares)	166	125	185	152
Restricted Stock Units (RSUs)
Effect of dilutive securities:
Dilutive effect of share-based compensation (in shares)	75	102	85	102
Performance Shares
Effect of dilutive securities:
Dilutive effect of share-based compensation (in shares)	131	108	135	103

Earnings Per Share (Details 1)

Earnings Per Share (Details 1) - shares	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Stock Appreciation Rights (SARs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock appreciation rights excluded from diluted EPS calculation	65,112	349,068	65,112	382,426

Inventories (Detail)

Inventories (Detail) - USD ($) $ in Thousands	Jun. 29, 2018	Jan. 01, 2018	Dec. 31, 2017
Principally average cost:
Raw materials and supplies	$ 40,550		$ 42,958
Work in process	176,216		187,719
Finished goods	41,017		34,418
Subtotal	257,783		265,095
Less: LIFO reserve balance	48,579		44,743
Inventories	$ 209,204	$ 218,293	$ 220,352

Inventories (Details 1)

Inventories (Details 1) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Inventory Disclosure [Abstract]
LIFO liquidation effect	$ 0.1	$ 0.2	$ 0.1	$ 0.2

Pensions and Other Post-emplo50

Pensions and Other Post-employment Benefits (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Pension Benefits [Member]
Components of net periodic benefit cost
Service cost	$ 1,674	$ 1,777	$ 3,348	$ 3,496
Interest cost	2,397	2,370	4,794	4,726
Expected return on plan assets	(3,697)	(3,378)	(7,394)	(6,743)
Amortization of prior service benefit	(30)	(73)	(61)	(194)
Amortization of net loss	1,959	1,611	3,919	3,198
Net periodic benefit cost (benefit)	2,303	2,307	4,606	4,483
Other Benefits [Member]
Components of net periodic benefit cost
Service cost	28	23	56	46
Interest cost	99	99	198	198
Expected return on plan assets	0	0	0	0
Amortization of prior service benefit	(374)	(374)	(749)	(748)
Amortization of net loss	0	0	0	0
Net periodic benefit cost (benefit)	$ (247)	$ (252)	$ (495)	$ (504)

Pensions and Other Post-emplo51

Pensions and Other Post-employment Benefits (Detail 1) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017
Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer Contribution	$ 13,000	$ 4,000

Accumulated Other Comprehensi52

Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017	Mar. 30, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Rollward]
Accumulated other comprehensive loss	$ (99,106)	$ (83,922)	$ (99,106)	$ (83,922)	$ (101,221)	$ (102,937)	$ (84,782)	$ (86,181)
Activity
Other comprehensive income (loss) before reclassifications	562	39	286	732
Amounts reclassified from accumulated other comprehensive income	1,687	1,115	3,826	2,007
Net current period other comprehensive income (loss) before tax	2,249	1,154	4,112	2,739
Deferred taxes on current period activity	134	294	281	480
Net current period other comprehensive income (loss) after tax	2,115	860	3,831	2,259
Pension and Post Employment Benefits [Member]
Accumulated Other Comprehensive Income (Loss) [Rollward]
Accumulated other comprehensive loss	(97,018)	(80,842)	(97,018)	(80,842)	(98,314)	(99,592)	(81,601)	(82,358)
Activity
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	1,622	1,156	3,248	2,309
Net current period other comprehensive income (loss) before tax	1,622	1,156	3,248	2,309
Deferred taxes on current period activity	326	397	674	793
Net current period other comprehensive income (loss) after tax	1,296	759	2,574	1,516
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Rollward]
Accumulated other comprehensive loss	(3,939)	(4,282)	(3,939)	(4,282)	(2,995)	(4,108)	(4,557)	(5,660)
Activity
Other comprehensive income (loss) before reclassifications	(944)	275	169	1,378
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Net current period other comprehensive income (loss) before tax	(944)	275	169	1,378
Deferred taxes on current period activity	0	0	0	0
Net current period other comprehensive income (loss) after tax	(944)	275	169	1,378
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Rollward]
Accumulated other comprehensive loss	1,851	1,202	1,851	1,202	88	763	1,376	1,837
Activity
Other comprehensive income (loss) before reclassifications	1,506	(236)	117	(646)
Amounts reclassified from accumulated other comprehensive income	65	(41)	578	(302)
Net current period other comprehensive income (loss) before tax	1,571	(277)	695	(948)
Deferred taxes on current period activity	(192)	(103)	(393)	(313)
Net current period other comprehensive income (loss) after tax	1,763	(174)	1,088	(635)
Forward Contract | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Rollward]
Accumulated other comprehensive loss	1,582	1,109	1,582	1,109	326	959	1,476	1,837
Activity
Other comprehensive income (loss) before reclassifications	871	(629)	(327)	(881)
Amounts reclassified from accumulated other comprehensive income	42	47	419	(214)
Net current period other comprehensive income (loss) before tax	913	(582)	92	(1,095)
Deferred taxes on current period activity	(343)	(215)	(531)	(367)
Net current period other comprehensive income (loss) after tax	1,256	(367)	623	(728)
Precious Metal Contracts [Member] | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Rollward]
Accumulated other comprehensive loss	269	93	269	93	$ (238)	$ (196)	$ (100)	$ 0
Activity
Other comprehensive income (loss) before reclassifications	635	393	444	235
Amounts reclassified from accumulated other comprehensive income	23	(88)	159	(88)
Net current period other comprehensive income (loss) before tax	658	305	603	147
Deferred taxes on current period activity	151	112	138	54
Net current period other comprehensive income (loss) after tax	$ 507	$ 193	$ 465	$ 93

Stock-based Compensation Expe53

Stock-based Compensation Expense (Detail)	6 Months Ended
	Jun. 29, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	2.58%
Dividend yield	0.80%
Volatility	31.90%
Expected term (in years)	5 years 6 months

Stock-based Compensation Expe54

Stock-based Compensation Expense Textual (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 2.7	$ 2.4	$ 5.2	$ 4.7
Unearned Compensation	$ 9.7		$ 9.7
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted in period			65,112
Weighted average exercise price on SARs granted in period			$ 50.35
Grant date fair value per unit (in usd per share)			15.73
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value per unit (in usd per share)			$ 50.35
Vesting period			3 years
Stock Compensation Plan [Member] | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted in period			59,222
Grant date fair value per unit (in usd per share)			$ 50.35
Vesting period			3 years
Director [Member] | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted in period			14,728
Grant date fair value per unit (in usd per share)			$ 51.60
Vesting period			1 year

Fair Value of Financial Instr55

Fair Value of Financial Instruments (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jun. 29, 2018	Dec. 31, 2017
Financial Assets
Assets Fair Value Disclosure	$ 3,584	$ 2,578
Financial Liabilities
Liabilities Fair Value Disclosure	2,443	2,780
Deferred Compensation Investments Liabilities
Financial Liabilities
Liabilities Fair Value Disclosure	2,420	2,310
Foreign Currency Forward Contract
Financial Liabilities
Liabilities Fair Value Disclosure	23	201
Precious Metal Swaps
Financial Liabilities
Liabilities Fair Value Disclosure	0	269
Fair Value, Inputs, Level 1
Financial Assets
Assets Fair Value Disclosure	2,420	2,310
Financial Liabilities
Liabilities Fair Value Disclosure	2,420	2,310
Fair Value, Inputs, Level 1 | Deferred Compensation Investments Liabilities
Financial Liabilities
Liabilities Fair Value Disclosure	2,420	2,310
Fair Value, Inputs, Level 1 | Foreign Currency Forward Contract
Financial Liabilities
Liabilities Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Precious Metal Swaps
Financial Liabilities
Liabilities Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2
Financial Assets
Assets Fair Value Disclosure	1,164	268
Financial Liabilities
Liabilities Fair Value Disclosure	23	470
Fair Value, Inputs, Level 2 | Deferred Compensation Investments Liabilities
Financial Liabilities
Liabilities Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 | Foreign Currency Forward Contract
Financial Liabilities
Liabilities Fair Value Disclosure	23	201
Fair Value, Inputs, Level 2 | Precious Metal Swaps
Financial Liabilities
Liabilities Fair Value Disclosure	0	269
Fair Value, Inputs, Level 3
Financial Assets
Assets Fair Value Disclosure	0	0
Financial Liabilities
Liabilities Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 | Deferred Compensation Investments Liabilities
Financial Liabilities
Liabilities Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 | Foreign Currency Forward Contract
Financial Liabilities
Liabilities Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 | Precious Metal Swaps
Financial Liabilities
Liabilities Fair Value Disclosure	0	0
Deferred Compensation Investments Assets
Financial Assets
Assets Fair Value Disclosure	2,420	2,310
Deferred Compensation Investments Assets | Fair Value, Inputs, Level 1
Financial Assets
Assets Fair Value Disclosure	2,420	2,310
Deferred Compensation Investments Assets | Fair Value, Inputs, Level 2
Financial Assets
Assets Fair Value Disclosure	0	0
Deferred Compensation Investments Assets | Fair Value, Inputs, Level 3
Financial Assets
Assets Fair Value Disclosure	0	0
Foreign Currency Forward Contract
Financial Assets
Assets Fair Value Disclosure	817	254
Foreign Currency Forward Contract | Fair Value, Inputs, Level 1
Financial Assets
Assets Fair Value Disclosure	0	0
Foreign Currency Forward Contract | Fair Value, Inputs, Level 2
Financial Assets
Assets Fair Value Disclosure	817	254
Foreign Currency Forward Contract | Fair Value, Inputs, Level 3
Financial Assets
Assets Fair Value Disclosure	0	0
Precious Metal Swaps
Financial Assets
Assets Fair Value Disclosure	347	14
Precious Metal Swaps | Fair Value, Inputs, Level 1
Financial Assets
Assets Fair Value Disclosure	0	0
Precious Metal Swaps | Fair Value, Inputs, Level 2
Financial Assets
Assets Fair Value Disclosure	347	14
Precious Metal Swaps | Fair Value, Inputs, Level 3
Financial Assets
Assets Fair Value Disclosure	$ 0	$ 0

Derivative Instruments and He56

Derivative Instruments and Hedging Activity (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Jun. 29, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 25,377	$ 13,981
Derivative, Fair Value, Net	559	127
Euro Member Countries, Euro | Prepaid Expenses and Other Current Assets [Member] | Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Notional Amount	25,377	13,981
Derivative Asset, Fair Value, Gross Asset	559	127
Euro Member Countries, Euro | Other Current Liabilities | Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liability, Notional Amount	0	0
Derivative Liability, Fair Value, Gross Liability	$ 0	$ 0

Derivative Instruments and He57

Derivative Instruments and Hedging Activity (Details 1) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net	$ 1.6	$ (0.5)	$ 1.1	$ (0.6)

Derivative Instruments and He58

Derivative Instruments and Hedging Activity (Details 2) - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Jun. 29, 2018	Dec. 31, 2017
Derivative [Line Items]
Derivative, Notional Amount	$ 22,487	$ 36,018
Derivative, Fair Value, Net	582	(329)
Prepaid Expenses and Other Current Assets [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	18,782	10,699
Derivative Asset, Fair Value, Gross Asset	580	127
Prepaid Expenses and Other Current Assets [Member] | Precious Metal Swaps
Derivative [Line Items]
Derivative Asset, Notional Amount	8,548	0
Derivative Asset, Fair Value, Gross Asset	322	0
Other Assets [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	540	880
Derivative Asset, Fair Value, Gross Asset	25	14
Other Assets [Member] | Precious Metal Swaps
Derivative [Line Items]
Derivative Asset, Notional Amount	540	880
Derivative Asset, Fair Value, Gross Asset	25	14
Other Current Liabilities
Derivative [Line Items]
Derivative Liability, Notional Amount	3,165	23,650
Derivative Liability, Fair Value, Gross Liability	(23)	(456)
Other Current Liabilities | Precious Metal Swaps
Derivative [Line Items]
Derivative Liability, Notional Amount	188	10,067
Derivative Liability, Fair Value, Gross Liability	0	(255)
Other Noncurrent Liabilities [Member] | Precious Metal Swaps
Derivative [Line Items]
Derivative Liability, Notional Amount	0	789
Derivative Liability, Fair Value, Gross Liability	0	(14)
Japan, Yen | Prepaid Expenses and Other Current Assets [Member] | Foreign Exchange Forward [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	847	5,673
Derivative Asset, Fair Value, Gross Asset	29	91
Japan, Yen | Other Current Liabilities | Foreign Exchange Forward [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	2,158	0
Derivative Liability, Fair Value, Gross Liability	(19)	0
Euro Member Countries, Euro | Prepaid Expenses and Other Current Assets [Member] | Foreign Exchange Forward [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	9,387	5,026
Derivative Asset, Fair Value, Gross Asset	229	36
Euro Member Countries, Euro | Other Current Liabilities | Foreign Exchange Forward [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	819	13,583
Derivative Liability, Fair Value, Gross Liability	$ (4)	$ (201)

Derivative Instruments and He59

Derivative Instruments and Hedging Activity (Details 3) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	$ 0	$ 0	$ 0	$ 0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax			$ 100,000	$ (600,000)

Contingencies (Detail)

Contingencies (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 29, 2018	Dec. 31, 2017
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Significant Assumptions	The reserves are established based upon analyses conducted by the Company’s engineers and outside consultants and are adjusted from time to time based upon ongoing studies, the difference between actual and estimated costs, and other factors. The reserves may also be affected by rulings and negotiations with regulatory agencies.
Undiscounted reserve balance	$ 6.4	$ 6.5