Rogers (ROG) 10-Q 9 Aug 16 2016 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Jul. 20, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	ROGERS CORP
Trading Symbol	ROG
Entity Central Index Key	84,748
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		18,041,151

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Net sales	$ 157,489	$ 163,098	$ 318,056	$ 328,149
Cost of sales	97,290	102,437	197,349	205,063
Gross margin	60,199	60,661	120,707	123,086
Selling, general and administrative expenses	34,369	33,026	64,229	69,173
Research and development expenses	7,074	7,053	13,622	13,161
Operating income	18,756	20,582	42,856	40,752
Equity income in unconsolidated joint ventures	708	392	1,321	1,311
Other income (expense), net	191	(517)	(356)	(646)
Interest expense, net	(1,115)	(1,304)	(2,236)	(2,310)
Income before income tax expense	18,540	19,153	41,585	39,107
Income tax expense	13,163	5,599	21,280	11,910
Net income	$ 5,377	$ 13,554	$ 20,305	$ 27,197
Basic earnings per share (in dollars per share)	$ 0.30	$ 0.73	$ 1.13	$ 1.47
Diluted earnings per share (in dollars per share)	$ 0.29	$ 0.71	$ 1.11	$ 1.43
Shares used in computing:
Basic earnings per share (shares)	18,007	18,627	17,986	18,551
Diluted earnings per share (shares)	18,253	19,056	18,234	19,003

CONDENSED CONSOLIDATED STATEME3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 5,377	$ 13,554	$ 20,305	$ 27,197
Foreign currency translation adjustment	(5,729)	8,731	5,197	(19,250)
Derivative instruments designated as cash flow hedges:
Unrealized gain (loss) on derivative instruments held at period end, net of tax (Note 6)		(160)		(160)
Unrealized gain (loss) reclassified into earnings (Note 6)	5	(124)	11	94
Pension and postretirement benefit plans reclassified into earnings, net of tax (Note 6):
Amortization of loss	36	262	71	531
Other comprehensive income (loss)	(5,688)	8,709	5,279	(18,785)
Comprehensive income (loss)	$ (311)	$ 22,263	$ 25,584	$ 8,412

CONDENSED CONSOLIDATED STATEME4

CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 247,397	$ 204,586
Accounts receivable, less allowance for doubtful accounts of $771 and $695	109,310	101,428
Inventories	88,257	91,824
Prepaid income taxes	4,171	5,058
Deferred income taxes		9,565
Asbestos-related insurance receivables	8,245	8,245
Other current assets	10,718	7,959
Total current assets	468,098	428,665
Property, plant and equipment, net of accumulated depreciation of $251,221 and $237,150	174,808	178,661
Investments in unconsolidated joint ventures	16,653	15,348
Deferred income taxes	14,820	8,594
Goodwill	177,067	175,453
Other intangible assets	70,313	75,019
Asbestos-related insurance receivables	45,114	45,114
Other long-term assets	3,328	3,501
Total assets	970,201	930,355
Current liabilities
Accounts payable	26,751	22,251
Accrued employee benefits and compensation	25,063	23,263
Accrued income taxes payable	5,438	3,599
Current portion of long term debt	3,653	2,966
Asbestos-related liabilities	8,245	8,245
Other accrued liabilities	19,388	18,324
Total current liabilities	88,538	78,648
Long term debt	171,730	173,557
Long term lease obligation	5,510	5,549
Pension and post-retirement benefit obligations	14,808	14,808
Asbestos-related liabilities	48,390	48,390
Non-current income tax	9,849	11,863
Deferred income taxes	14,982	9,455
Other long-term liabilities	3,201	3,503
Commitments and Contingencies (Note 14)
Shareholders’ Equity
Capital Stock - $1 par value; 50,000 authorized shares; 18,027 and 17,957 shares outstanding	18,027	17,957
Additional paid-in capital	114,974	112,017
Retained earnings	563,371	543,066
Accumulated other comprehensive income (loss)	(83,179)	(88,458)
Total shareholders' equity	613,193	584,582
Total liabilities and shareholders' equity	$ 970,201	$ 930,355

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 771	$ 695
Property, plant and equipment, accumulated depreciation	$ 251,221	$ 237,150
Capital Stock, par value (in dollars per share)	$ 1	$ 1
Capital Stock, authorized shares (shares)	50,000,000	50,000,000
Capital Stock, shares outstanding (shares)	18,027,000	17,957,000

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating Activities:
Net income	$ 20,305	$ 27,197
Adjustments to reconcile net income to cash from operating activities:
Depreciation and amortization	18,312	16,504
Stock-based compensation expense	5,740	5,025
Deferred income taxes	8,825	(332)
Equity in undistributed income of unconsolidated joint ventures	(1,321)	(1,311)
Dividends received from unconsolidated joint ventures	426	780
Pension and postretirement benefits	(1,404)	(589)
Loss (gain) from the sale of property, plant and equipment	15	(1)
Changes in operating assets and liabilities, excluding effects of acquisitions:
Accounts receivable	(8,693)	2,309
Inventories	616	(10,624)
Pension contribution	(138)	(6,500)
Other current assets	(2,056)	(2,580)
Accounts payable and other accrued expenses	12,585	(10,417)
Other, net	(1,908)	2,952
Net cash provided by operating activities	51,304	22,413
Investing Activities:
Business acquisition, net of cash acquired	0	(155,778)
Capital expenditures	(9,992)	(14,274)
Proceeds from the sale of property, plant and equipment, net	0	1
Net cash used in investing activities	(9,992)	(170,051)
Financing Activities:
Proceeds from long term borrowings		125,000
Repayment of debt principal and long term lease obligation	(1,516)	(5,131)
Repurchases of capital stock	(3,997)	0
Proceeds from the exercise of stock options, net	2,058	6,515
Issuance of restricted stock shares	(1,201)	(2,342)
Proceeds from issuance of shares to employee stock purchase plan	427	345
Net cash (used in) provided by financing activities	(4,229)	124,387
Effect of exchange rate fluctuations on cash	5,728	(4,362)
Net increase (decrease) in cash and cash equivalents	42,811	(27,613)
Cash and cash equivalents at beginning of period	204,586	237,375
Cash and cash equivalents at end of period	$ 247,397	$ 209,762

CONDENSED CONSOLIDATED STATEME7

CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Unaudited) - 6 months ended Jun. 30, 2016 - USD ($) $ in Thousands	Total	Capital Stock/Capital Shares	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Balance, Beginning of Period at Dec. 31, 2015	$ 584,582	$ 17,957	$ 112,017	$ 543,066	$ (88,458)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	20,305			20,305
Other comprehensive income (loss)	5,279				5,279
Stock options exercised	2,058	56	2,002
Stock issued to directors	0	20	(20)
Shares issued for employees stock purchase plan	427	12	415
Shares issued for restricted stock, net of cancellations for tax withholding	(1,201)	52	(1,253)
Shares repurchased	(3,997)	(70)	(3,927)
Stock-based compensation expense	5,740		5,740
Balance, End of Period at Jun. 30, 2016	$ 613,193	$ 18,027	$ 114,974	$ 563,371	$ (83,179)

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation As used herein, the terms “Company,” “Rogers,” “we,” “us,” “our” and similar terms mean Rogers Corporation and its subsidiaries, unless the context indicates otherwise. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information. Accordingly, these statements do not include all of the information and footnotes required by GAAP for complete financial statements. In our opinion, the accompanying condensed consolidated financial statements include all normal recurring adjustments necessary for their fair presentation in accordance with GAAP. All significant intercompany transactions have been eliminated. Certain statement of financial position reclassifications have been made to prior period balances in order to conform to the current period's presentation. Interim results are not necessarily indicative of results for a full year. For further information regarding our accounting policies, refer to the audited consolidated financial statements and footnotes thereto included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2015 .

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The accounting guidance for fair value measurements establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value: • Level 1 – Quoted prices in active markets for identical assets or liabilities. • Level 2 – Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. • Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. From time to time we enter into various instruments that require fair value measurement. Assets and liabilities measured on a recurring basis, categorized by the level of inputs used in the valuation, included: (Dollars in thousands) Carrying amount as of June 30, 2016 Level 1 Level 2 Level 3 Foreign currency contracts $ 908 $ — $ 908 $ — Copper derivative contracts $ 315 $ — $ 315 $ — Interest rate swap $ — $ — $ — $ — (Dollars in thousands) Carrying amount as of December 31, 2015 Level 1 Level 2 Level 3 Foreign currency contracts $ (78 ) $ — $ (78 ) $ — Copper derivative contracts $ 193 $ — $ 193 $ — Interest rate swap $ (18 ) $ — $ (18 ) $ —

Hedging Transactions and Deriva

Hedging Transactions and Derivative Financial Instruments	6 Months Ended
	Jun. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Hedging Transactions and Derivative Financial Instruments	Hedging Transactions and Derivative Financial Instruments We are exposed to certain risks related to our ongoing business operations. The primary risks being managed through the use of derivative instruments are foreign currency exchange rate risk and commodity pricing risk (primarily related to copper). We do not use derivative financial instruments for trading or speculative purposes. The valuation of derivative contracts used to manage each of these risks is described below: • Foreign Currency - The fair value of any foreign currency option derivative is based upon valuation models applied to current market information such as strike price, spot rate, maturity date and volatility, and by reference to market values resulting from an over-the-counter market or obtaining market data for similar instruments with similar characteristics. • Commodity - The fair value of copper derivatives is computed using a combination of intrinsic and time value valuation models. The intrinsic valuation model reflects the difference between the strike price of the underlying copper derivative instrument and the current prevailing copper prices in an over-the-counter market at period end. The time value valuation model incorporates the constant changes in the price of the underlying copper derivative instrument, the time value of money, the underlying copper derivative instrument's strike price and the remaining time to the underlying copper derivative instrument's expiration date from the period end date. Overall, fair value is a function of five primary variables: price of the underlying instrument, time to expiration, strike price, interest rate, and volatility. The guidance for the accounting and disclosure of derivatives and hedging transactions requires companies to recognize all of their derivative instruments as either assets or liabilities at fair value in the statements of financial position. The accounting for changes in the fair value (i.e., gains or losses) of a derivative instrument depends on whether it has been designated and qualifies for hedge accounting treatment as defined under the applicable accounting guidance. For derivative instruments that are designated and qualify for hedge accounting treatment (i.e., hedging the exposure to variability in expected future cash flows that is attributable to a particular risk), the effective portion of the gain or loss on the derivative instrument is reported as a component of other comprehensive income (loss). This gain or loss is reclassified into earnings in the same line item of the condensed consolidated statements of operations associated with the forecasted transaction and in the same period or periods during which the hedged transaction affects earnings. The remaining gain or loss on the derivative instrument in excess of the cumulative change in the present value of the future cash flows of the hedged item (i.e., the ineffective portion) if any, is recognized in the condensed consolidated statements of operations during the current period. As of June 30, 2016 , we did not have any contracts that are designated and qualify for hedge accounting treatment. We had such contracts outstanding as of June 30, 2015 , and for the six months ended June 30, 2015 , there was no hedge ineffectiveness. Foreign Currency During the quarter ended June 30, 2016 , we entered into Hungarian Forint, Chinese Yuan, Euro, Great Britain Pound, Japanese Yen, and Korean Won forward contracts. We entered into these foreign currency forward contracts to mitigate certain global balance sheet exposures. These contracts do not qualify for hedge accounting treatment; therefore mark-to-market adjustments are recorded in the other income (expense), net line item in our condensed consolidated statements of operations for these contracts. As of June 30, 2016 the notional values of these foreign currency forward contracts were: Notional Values of Foreign Currency Derivatives CNY/USD ¥ 1,189,444 USD/EUR € 43,177,841 USD/KRW ₩ 12,239,440,000 JPY/EUR ¥ 169,000,000 EUR/GBP £ 39,000 JPY/USD ¥ 19,000,000 HUF/EUR € 811,955 Commodity We currently have twenty-four outstanding contracts to hedge exposure related to the purchase of copper in our Power Electronics Solutions and Advanced Connectivity Solutions operations. These contracts are held with financial institutions and minimize the risk associated with a potential rise in copper prices. These contracts provide some coverage over the forecasted 2016 and 2017 monthly copper exposure and do not qualify for hedge accounting treatment; therefore, any mark-to-market adjustments required on these contracts are recorded in the other income (expense), net line item in our condensed consolidated statements of operations. The notional values of our copper contracts outstanding as of June 30, 2016 were: Notional Value of Copper Derivatives July 2016 - September 2016 127 metric tons per month October 2016 - December 2016 117 metric tons per month January 2017 - March 2017 95 metric tons per month April 2017 - June 2017 61 metric tons per month July 2017 - September 2017 28 metric tons per month Interest Rates In July 2012, we entered into an interest rate swap to hedge the variable interest rate on our term loan debt. This swap expired as of June 30, 2016 . Effects on Statements of Operations and of Comprehensive Income (Loss): (Dollars in thousands) The Effect of Current Derivative Instruments on the Financial Statements for the period ended June 30, 2016 Fair Values of Derivative Instruments as of June 30, 2016 Gain (Loss) Other Assets (Liabilities) Foreign Exchange Contracts Location Quarter Ended Six Months Ended Contracts not designated as hedging instruments Other income (expense), net $ 943 $ 908 $ 908 Copper Derivatives Contracts not designated as hedging instruments Other income (expense), net $ (79 ) $ (103 ) $ 315 Interest Rate Swap Contracts designated as hedging instruments Other comprehensive income (loss) $ — $ — $ — (Dollars in thousands) The Effect of Current Derivative Instruments on the Financial Statements for the period ended June 30, 2015 Fair Values of Derivative Instruments as of June 30, 2015 Gain (Loss) Other Assets (Liabilities) Foreign Exchange Contracts Location Quarter Ended Six Months Ended Contracts designated as hedging instruments Other comprehensive income (loss) $ (335 ) $ (100 ) $ 274 Contracts not designated as hedging instruments Other income (expense), net $ (125 ) $ (398 ) $ (39 ) Copper Derivatives Contracts not designated as hedging instruments Other income (expense), net $ (157 ) $ (449 ) $ 436 Interest Rate Swap Contracts designated as hedging instruments Other comprehensive income (loss) $ 35 $ 51 $ (93 )

Inventories

Inventories	6 Months Ended
	Jun. 30, 2016
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories are valued at the lower of cost or market. Effective October 1, 2015, the Company changed its method for inventory costing from the last in, first out (LIFO) cost method to the first in, first out (FIFO) cost method for all operations that were using the LIFO cost method. This change in accounting method was deemed preferable because this change causes inventory to be valued on a consistent basis throughout the entire Company and on a more comparable basis with industry peer companies. This change in accounting method was completed in accordance with Accounting Standards Codification (ASC) 250, Accounting Changes and Error Corrections , and all periods presented have been retrospectively adjusted to reflect the period-specific effects of applying the new accounting principle. The following table summarizes the effect of this accounting change on our condensed consolidated statements of operations for the quarter ended June 30, 2015 : Quarter Ended June 30, 2015 (Dollars in thousands, except per share amounts) As Originally Reported Under LIFO As Adjusted under FIFO Effect of Change Cost of sales $ 102,509 $ 102,437 $ (72 ) Net income $ 13,540 $ 13,554 $ 14 Basic earnings per share $ 0.73 $ 0.73 $ — Diluted earnings per share $ 0.71 $ 0.71 $ — The following table summarizes the effect of this accounting change on our condensed consolidated statements of operations for the six months ended June 30, 2015 : Six Months Ended June 30, 2015 (Dollars in thousands, except per share amounts) As Originally Reported Under LIFO As Adjusted under FIFO Effect of Change 2015 Cost of sales $ 205,205 $ 205,063 $ (142 ) Net income $ 27,167 $ 27,197 $ 30 Basic earnings per share $ 1.46 $ 1.47 $ — Diluted earnings per share $ 1.43 $ 1.43 $ — There was no impact on cash provided by operating activities as a result of the above changes. Inventories were as follows at the end of the periods noted below: (Dollars in thousands) June 30, December 31, Raw materials $ 32,070 $ 35,499 Work-in-process 22,284 22,804 Finished goods 33,903 33,521 Total Inventories $ 88,257 $ 91,824

Acquisition

Acquisition	6 Months Ended
	Jun. 30, 2016
Business Combinations [Abstract]
Acquisition	Acquisition On January 22, 2015, we completed the acquisition of Arlon LLC and its subsidiaries (collectively, Arlon), pursuant to the terms of the Stock Purchase Agreement, dated December 18, 2014, by and among the Company, Handy & Harman Group, Ltd. and its subsidiary Bairnco Corporation, as amended (the Purchase Agreement). Pursuant to the terms of the Purchase Agreement, we acquired Arlon and assumed certain liabilities related to the acquisition for an aggregate purchase price of approximately $157.0 million . We used borrowings of $125.0 million under our bank credit facility in addition to cash on hand to fund the acquisition. The results of Arlon have been included in our consolidated financial statements only for the periods subsequent to the completion of our acquisition on January 22, 2015. On December 21, 2015, we sold an Arlon business, which made polyimide and thermoset epoxy laminate products. The operations were previously reported with our Other segment.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) The changes in accumulated other comprehensive income (loss) by component at June 30, 2016 and 2015 we re as follows: (Dollars in thousands) Foreign currency translation adjustments Funded status of pension plans and other postretirement benefits (1) Unrealized gain (loss) on derivative instruments (2) Total Beginning Balance December 31, 2014 $ (14,193 ) $ (50,808 ) $ (93 ) $ (65,094 ) Other comprehensive income (loss) before reclassifications (19,250 ) — $ (160 ) (19,410 ) Amounts reclassified from accumulated other comprehensive income (loss) (3) — 531 $ 94 625 Net current-period other comprehensive income (loss) (19,250 ) 531 $ (66 ) (18,785 ) Ending Balance June 30, 2015 $ (33,443 ) $ (50,277 ) $ (159 ) $ (83,879 ) Beginning Balance December 31, 2015 $ (41,365 ) $ (47,082 ) $ (11 ) $ (88,458 ) Other comprehensive income (loss) before reclassifications 5,197 — — 5,197 Amounts reclassified from accumulated other comprehensive income (loss) (4) — 71 11 82 Net current-period other comprehensive income (loss) 5,197 71 11 5,279 Ending Balance June 30, 2016 $ (36,168 ) $ (47,011 ) $ — $ (83,179 ) (1) Net of taxes of $9,840 and $9,879 as of June 30, 2016 and December 31, 2015 , respectively. Net of taxes of $11,657 and $11,952 as of June 30, 2015 and December 31, 2014 , respectively. (2) Net of taxes of $0 and $5 as of June 30, 2016 and December 31, 2015 , respectively. Net of taxes of $33 and $50 as of June 30, 2015 and December 31, 2014 , respectively. (3) Net of taxes of $286 and $50 for the pension plans and postretirement benefits and unrealized gain (loss) on derivatives, respectively. (4) Net of taxes of $38 and $6 for the pension plans and postretirement benefits and unrealized gain (loss) on derivatives, respectively.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2016
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The following table sets forth the computation of basic and diluted earnings per share, for the periods indicated: (In thousands, except per share amounts) Quarter Ended Six Months Ended June 30, June 30, June 30, June 30, Numerator: Net income $ 5,377 $ 13,554 $ 20,305 $ 27,197 Denominator: Weighted-average shares outstanding - basic 18,007 18,627 17,986 18,551 Effect of dilutive shares 246 429 248 452 Weighted-average shares outstanding - diluted 18,253 19,056 18,234 19,003 Basic earnings per share $ 0.30 $ 0.73 $ 1.13 $ 1.47 Diluted earnings per share $ 0.29 $ 0.71 $ 1.11 $ 1.43 Certain potential options to purchase shares were excluded from the calculation of diluted weighted-average shares outstanding because the exercise price was greater than the average market price of our capital stock during the year. For the quarter ended June 30, 2016 , 13,500 shares were excluded. For the quarter ended June 30, 2015 , no shares were excluded.

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2016
Share-based Compensation [Abstract]
Stock-Based Compensation	Stock-Based Compensation Equity Compensation Awards Stock Options Stock options have been granted under various equity compensation plans. The maximum contractual term for all options is normally ten years . We have no t granted any stock options since the first quarter of 2012. In most cases, we recognize expense using the straight-line method for stock option grants. The amount of stock-based compensation recognized during a period is based on the value of the portion of the awards that are ultimately expected to vest. Forfeitures are required to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The term “forfeitures” is distinct from “cancellations” or “expirations” and represents only the unvested portion of the surrendered option. We currently expect, based on historical analysis, an annual forfeiture rate of approximately 3% . The first quarter of 2016 was the final quarter in which we recognized stock based compensation expense related to previously issued stock option grants, and the amount of such expense was de minimis. For the three and six months ended June 30, 2015 , we recognized approximately $0.1 million and $0.1 million of stock option compensation expense, respectively. A summary of the activity under our stock option plans as of June 30, 2016 and changes during the three and six months then ended, is presented below: Options Outstanding Weighted- Average Exercise Price Per Share Weighted-Average Remaining Contractual Life in Years Aggregate Intrinsic Value Options outstanding at March 31, 2016 198,366 $ 40.31 3.3 $ 3,934,582 Options exercised (41,959 ) $ 35.60 Options forfeited (350 ) $ 44.32 Options outstanding at June 30, 2016 156,057 $ 41.57 3.1 $ 3,085,731 Options exercisable at June 30, 2016 156,057 $ 41.57 3.1 $ 3,085,731 Options vested at June 30, 2016 156,057 $ 41.57 3.1 $ 3,085,731 Options Outstanding Weighted- Average Exercise Price Per Share Options outstanding at December 31, 2015 212,038 $ 40.47 Options exercised (55,631 ) $ 36.99 Options forfeited (350 ) $ 44.32 Options outstanding at June 30, 2016 156,057 $ 41.57 During the six months ended June 30, 2016 , the total intrinsic value of options exercised (i.e., the difference between the market price at time of exercise and the price paid by the individual to exercise the options) was $1.4 million , and the total amount of cash received from the exercise of these options was $2.1 million . Performance-Based Restricted Stock As of June 30, 2016 , we had performance-based restricted stock awards from 2014, 2015 and 2016 outstanding. These awards cliff vest at the end of a specified three year measurement period. For the 2015 and 2016 grants, employees whose employment terminates during the measurement period due to death, disability, or, in certain cases, retirement may receive a pro-rata payout based on the number of days they were employed during the vesting period. Participants are eligible to be awarded shares ranging from 0% to 200% of the target award amount, based on certain defined measurement criteria. Compensation expense is recognized using the straight-line method over the vesting period. The outstanding awards from 2016 have one measurement criterion on which the final payout of each award is based - the three year total shareholder return (TSR) on the performance of our capital stock as compared to that of a specified group of peer companies. TSR is considered a market condition. As such, the fair value of all awards was determined on the date of grant using a Monte Carlo simulation valuation model with related compensation expense fixed on the grant date and expensed on a straight-line basis over the life of the awards that ultimately vest with no changes for the final projected payout of the award until payment is made. The amount of performance-based restricted stock compensation recognized during a period is based on the value of the portion of the awards that are ultimately expected to vest. Forfeitures are required to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. We currently expect, based on historical analysis, an annual forfeiture rate of approximately 12% . This assumption is reviewed periodically and the rate is adjusted as necessary. Ultimately, the actual expense recognized over the vesting period will only be for those awards that vest. Below were the assumptions used in the Monte Carlo calculation: June 30, June 30, Expected volatility 29.6% 28.2% Expected term (in years) 3.0 3.0 Risk-free interest rate 0.93% 0.96% Expected volatility – In determining expected volatility, we have considered a number of factors, including historical volatility. Expected term – We use the vesting period of the award to determine the expected term assumption for the Monte Carlo simulation valuation model. Risk-free interest rate – We use an implied "spot rate" yield on U.S. Treasury Constant Maturity rates as of the grant date for our assumption of the risk-free interest rate. Expected dividend yield – We do not currently pay dividends on our capital stock; therefore, a dividend yield of 0% was used in the Monte Carlo simulation valuation model. Performance-Based Restricted Stock Awards Non-vested awards outstanding at December 31, 2015 107,229 Awards granted 81,220 Stock issued (25,397 ) Awards forfeited (8,401 ) Non-vested awards outstanding at June 30, 2016 154,651 During the three and six months ended June 30, 2016 , we recognized compensation expense for performance-based restricted stock awards of approximately $1.4 million and $ 2.1 million , respectively. During the three and six months ended June 30, 2015 , we recognized compensation expense for performance-based restricted stock awards of approximately $1.2 million and $1.6 million , respectively. Time-Based Restricted Stock As of June 30, 2016 , we had time-based restricted stock grants from 2013, 2014, 2015 and 2016 outstanding. The grants typically vest on the first, second and third anniversaries of the original grant date. We recognize compensation expense on all of these awards on a straight-line basis over the vesting period. The fair value of the award is determined based on the market value of the underlying stock price at the grant date. The amount of time-based restricted stock compensation recognized during a period is based on the value of the portion of the awards that are ultimately expected to vest. Forfeitures are required to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. We currently expect, based on historical analysis, an annual forfeiture rate of approximately 12% . This assumption is reviewed periodically and the rate is adjusted as necessary. Ultimately, the actual expense recognized over the vesting period will only be for those awards that vest. Time-Based Restricted Stock Awards Non-vested awards outstanding at December 31, 2015 208,318 Awards granted 117,510 Stock issued (47,089 ) Awards forfeited (16,247 ) Non-vested awards outstanding at June 30, 2016 262,492 During the three and six months ended June 30, 2016 , we recognized compensation expense for time-based restricted stock awards of approximately $1.5 million and $2.7 million , respectively. During the three and six months ended June 30, 2015 , we recognized compensation expense for time-based restricted stock awards of approximately $1.3 million and $2.4 million , respectively. Deferred Stock Units We grant deferred stock units to non-management directors. These awards are fully vested on the date of grant and the related shares are generally issued on the 13 month anniversary of the grant date unless the individual elects to defer the receipt of those shares. Each deferred stock unit results in the issuance of one share of Rogers’ stock. The grant of deferred stock units is typically done annually during the second quarter of each year. The fair value of the award is determined based on the market value of the underlying stock price at the grant date. Deferred Stock Units Awards outstanding at December 31, 2015 23,950 Awards granted 11,900 Stock issued (20,000 ) Awards outstanding at June 30, 2016 15,850 For both the three and six month periods ended June 30, 2016 and 2015 we recognized compensation expense for deferred stock units of $0.7 million and $0.7 million , respectively. Employee Stock Purchase Plan We have an employee stock purchase plan (ESPP) that allows eligible employees to purchase, through payroll deductions, shares of our capital stock at a discount to fair market value. The ESPP has two six month offering periods each year, the first beginning in January and ending in June and the second beginning in July and ending in December. The ESPP contains a look-back feature that allows the employee to acquire stock at a 15% discount from the underlying market price at the beginning or end of the applicable period, whichever is lower. We recognize compensation expense on this plan ratably over the offering period based on the fair value of the anticipated number of shares that will be issued at the end of each offering period. Compensation expense is adjusted at the end of each offering period for the actual number of shares issued. Fair value is determined based on two factors: (i) the 15% discount amount on the underlying stock’s market value on the first day of the applicable offering period and (ii) the fair value of the look-back feature determined by using the Black-Scholes model. We recognized approximately $0.1 million of compensation expense associated with the plan in each of the three months ended June 30, 2016 and 2015 and approximately $0.2 million of compensation expense associated with each of the six months ended June 30, 2016 and 2015 .

Pension Benefits and Other Post

Pension Benefits and Other Postretirement Benefit Plans	6 Months Ended
	Jun. 30, 2016
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Pension Benefit and Other Postretirement Benefit Plans	Pension Benefits and Other Postretirement Benefit Plans Components of Net Periodic (Benefit) Cost The components of net periodic benefit cost (income) for the periods indicated were: (Dollars in thousands) Pension Benefits Retirement Health and Life Insurance Benefits Quarter Ended Six Months Ended Quarter Ended Six Months Ended Change in benefit obligation: June 30, 2016 June 30, 2015 June 30, 2016 June 30, 2015 June 30, 2016 June 30, 2015 June 30, 2016 June 30, 2015 Service cost $ — $ — $ — $ — $ 37 $ 150 $ 74 $ 300 Interest cost 1,893 1,838 3,786 3,677 19 75 38 150 Expected return on plan assets (2,706 ) (2,771 ) (5,412 ) (5,542 ) — — — — Amortization of prior service cost (credit) — — — — (373 ) — (746 ) — Amortization of net loss (gain) 447 413 894 826 (19 ) — (38 ) — Net periodic (benefit) cost $ (366 ) $ (520 ) $ (732 ) $ (1,039 ) $ (336 ) $ 225 $ (672 ) $ 450 Employer Contributions In the first three and six months of 2016 , we did no t make any voluntary contributions to our qualified defined benefit pension plans. In the second quarter of 2015 , we made voluntary contributions of $6.5 million to our qualified defined benefit pension plans. As of December 31, 2015 , we had not met the minimum funding requirement for all of our defined benefit pension plans and were therefore required to make a contribution to one of the plans of $0.1 million and $0.2 million during the three and six months ended June 30, 2016 . We did no t make any contributions during the three and six months ended June 30, 2015 . We estimate that we will be required to make contributions of $0.3 million in 2016 . As there is no funding requirement for the non-qualified defined benefit pension plans nor the Retiree Health and Life Insurance benefit plans, benefit payments made during the year are funded directly by the Company.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2016
Segment Reporting [Abstract]
Segment Information	Segment Information Our reporting structure is comprised of the following operating segments: Advanced Connectivity Solutions (ACS), Elastomeric Material Solutions (EMS), Power Electronics Solutions (PES) and the Other segment. We believe this structure aligns our external reporting presentation with how we currently manage and view our business internally. We completed the acquisition of Arlon on January 22, 2015. As part of the integration process, Arlon operations related to circuit materials and silicones were included in our ACS and EMS segments, respectively. Arlon operations related to the manufacture of specialty polyimide, epoxy-based laminates and bonding materials were included in our Other segment until we sold those operations in December 2015. The following table sets forth the information about our segments for the periods indicated, inter-segment sales have been eliminated from the net sales data: Quarter Ended Six Months Ended (Dollars in thousands) June 30, June 30, June 30, June 30, Net sales Advanced Connectivity Solutions $ 67,222 $ 66,408 $ 140,598 $ 137,695 Elastomeric Material Solutions 45,767 47,016 92,084 91,572 Power Electronics Solutions 38,363 38,539 73,614 77,068 Other 6,137 11,135 11,760 21,814 Net sales $ 157,489 $ 163,098 $ 318,056 $ 328,149 Operating income Advanced Connectivity Solutions $ 10,829 $ 12,076 $ 26,729 $ 24,944 Elastomeric Material Solutions 5,348 5,548 10,653 8,581 Power Electronics Solutions 477 877 1,773 3,268 Other 2,102 2,081 3,701 3,959 Operating income 18,756 20,582 42,856 40,752 Equity income in unconsolidated joint ventures 708 392 1,321 1,311 Other income (expense), net 191 (517 ) (356 ) (646 ) Interest expense, net (1,115 ) (1,304 ) (2,236 ) (2,310 ) Income before income tax expense $ 18,540 $ 19,153 $ 41,585 $ 39,107

Joint Ventures

Joint Ventures	6 Months Ended
	Jun. 30, 2016
Equity Method Investments and Joint Ventures [Abstract]
Joint Ventures	Joint Ventures As of June 30, 2016 , we had two joint ventures, each 50% owned, which were accounted for under the equity method of accounting. Joint Venture Location Reportable Segment Fiscal Year-End Rogers INOAC Corporation (RIC) Japan Elastomeric Material Solutions October 31 Rogers INOAC Suzhou Corporation (RIS) China Elastomeric Material Solutions December 31 We recognized equity income related to the joint ventures of $0.7 million and $1.3 million for the three and six months ended June 30, 2016 , respectively. We recognized equity income related to the joint ventures of $0.4 million and $1.3 million for the three and six months ended June 30, 2015 , respectively. These amounts are included in the condensed consolidated statements of operations. The summarized financial information for the joint ventures for the periods indicated was as follows: Quarter Ended Six Months Ended (Dollars in thousands) June 30, June 30, June 30, June 30, Net sales $ 11,210 $ 9,708 $ 20,386 $ 20,613 Gross profit $ 3,435 $ 1,865 $ 6,597 $ 4,927 Net income $ 1,416 $ 784 $ 2,642 $ 2,622 Receivables from and payables to joint ventures arise during the normal course of business from transactions between us and the joint ventures. We had receivables of $1.4 million and $1.3 million as of June 30, 2016 and December 31, 2015 , respectively. We had payables of $2.0 million and $1.4 million as of June 30, 2016 and December 31, 2015 , respectively.

Debt

Debt	6 Months Ended
	Jun. 30, 2016
Debt Disclosure [Abstract]
Debt	Debt On June 18, 2015 , we entered into a secured five year credit agreement (the Amended Credit Agreement). The Amended Credit Agreement amends and restates the credit agreement signed between the Company and the same banks on July 13, 2011 and increased our borrowing capacity from $265.0 million to $350.0 million , with an additional $50.0 million accordion. The Amended Credit Agreement provides (1) a $55.0 million term loan; (2) up to $295.0 million of revolving loans, with sublimits for multicurrency borrowings, letters of credit and swing-line notes; and (3) a $50.0 million expansion feature. Borrowings may be used to finance working capital needs, for letters of credit and for general corporate purposes in the ordinary course of business, including the financing of permitted acquisitions (as defined in the Amended Credit Agreement). Borrowings under the Amended Credit Agreement bear interest based on one of two options. Alternate base rate loans bear interest that includes a base reference rate plus a spread of 37.5 to 75.0 basis points, depending on our leverage ratio. The base reference rate is the greater of the prime rate; federal funds effective rate plus 50 basis points; or adjusted 1-month LIBOR plus 100 basis points. Euro-currency loans bear interest based on adjusted LIBOR plus a spread of 137.5 to 175.0 basis points, depending on our leverage ratio. We incurred interest expense on our outstanding debt of $0.9 million and $1.8 million for the three and six months ended June 30, 2016 , respectively and $1.1 million and $1.9 million for the three and six months ended June 30, 2015 , respectively. In addition to interest payable on the principal amount of indebtedness outstanding from time to time under the Amended Credit Agreement, the Company is required to pay a quarterly fee of 0.20% to 0.30% (based upon our leverage ratio) of the unused amount of the lenders’ commitments under the Amended Credit Agreement. We incurred an unused commitment fee of $0.1 million and $0.2 million for the three and six months ended June 30, 2016 and $0.1 million and $0.1 million for the three and six months ended June 30, 2015 , respectively. The Amended Credit Agreement contains customary representations, warranties, covenants, mandatory prepayments and events of default under which the Company's payment obligations may be accelerated. The financial covenants include requirements to maintain (1) a leverage ratio of no more than 3.25 to 1.00, subject to a one-time election to increase the maximum leverage ratio to 3.50 to 1.00 for one fiscal year in connection with a permitted acquisition, and (2) an interest coverage ratio (ICR) of no less than 3.00 to 1.00. The ICR is the ratio determined as of the end of each of the Company's fiscal quarters ending on and after September 30, 2015, of (i) Consolidated Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA) (as defined in the Amended Credit Agreement) minus the unfinanced portion of Consolidated Capital Expenditures to (ii) Consolidated Interest Expense paid in cash, in each case for the period of four consecutive fiscal quarters ending with the end of such fiscal quarter, all calculated for the Company and its subsidiaries on a consolidated basis. As of June 30, 2016 , we were in compliance with all of the financial covenants in the Amended Credit Agreement. The Amended Credit Agreement requires the mandatory quarterly repayment of principal on amounts borrowed under the term loan. Payments commenced on September 30, 2015 , and are scheduled to be completed on June 30, 2020 . As of June 30, 2016 , the remaining aggregate mandatory principal payments were as follows: 2016 $2.1 million 2017 $4.1 million 2018 $4.8 million 2019 $5.5 million 2020 $160.8 million All obligations under the Amended Credit Agreement are guaranteed by each of the Corporation’s existing and future material domestic subsidiaries, as defined in the Amended Credit Agreement (the Guarantors). The obligations are also secured by a Second Amended and Restated Pledge and Security Agreement, dated as of June 18, 2015 , entered into by the Company and the Guarantors that grants to the administrative agent, for the benefit of the lenders, a security interest, subject to certain exceptions, in substantially all of the non-real estate assets of the Company and the Guarantors. These assets include, but are not limited to, receivables, equipment, intellectual property, inventory, and stock in certain subsidiaries. In addition, as of June 30, 2016 and December 31, 2015 we had a $1.2 million standby letter of credit (LOC) to guarantee Rogers workers compensation plans that were backed by the Amended Credit Agreement. No amounts were drawn on the LOC as of June 30, 2016 or December 31, 2015 . If an event of default occurs, the lenders may, among other things, terminate their commitments and declare all outstanding borrowings to be immediately due and payable together with accrued interest and fees. At June 30, 2016 , we have $1.9 million of remaining deferred debt issuance costs. These costs will be amortized over the life of the Amended Credit Agreement, which will terminate in June 2020 . We incurred amortization expense of $0.1 million and $0.2 million in the three and six months ended June 30, 2016 , respectively and $0.1 million and $0.2 million for the three and six months ended June 30, 2015 , respectively related to these deferred costs. We borrowed $125.0 million under the line of credit in the first quarter of 2015 to fund the acquisition of Arlon. During the first six months of 2016 and 2015 , we made principal payments of $1.4 million and $5.0 million , respectively, on the outstanding debt. We are obligated to pay $4.1 million on this debt obligation in the next 12 months under the term loan. In July 2012, we entered into an interest rate swap to hedge the variable interest rate on our term loan debt. This swap expired as of June 30, 2016 . At June 30, 2016 , our outstanding debt balance is comprised of a term loan of $52.3 million and $125.0 million borrowed on the revolving line of credit. At June 30, 2016 , the rate charged on this debt is the 1 month LIBOR at 0.5000% plus a spread of 1.500% . Restriction on Payment of Dividends Our Amended Credit Agreement generally permits us to pay cash dividends to our shareholders, provided that (i) no default or event of default has occurred and is continuing or would result from the dividend payment and (ii) our leverage ratio does not exceed 2.00 to 1.00. If our leverage ratio exceeds 2.00 to 1.00, we may nonetheless make up to $10.0 million in restricted payments, including dividends, during the fiscal year, provided that no default or event of default has occurred and is continuing or would result from the payments. As of June 30, 2016 , we do not currently have any restrictions in our ability to pay dividends under our Amended Credit Agreement, as no default has occurred and our leverage ratio has not exceeded 2.00 to 1.00. Capital Lease We have a capital lease obligation related to our manufacturing facility in Eschenbach, Germany. Under the terms of the leasing agreement, we have an option to purchase the property upon the expiration of the lease in 2021 at a price which is the greater of (i) the then-current market value or (ii) the residual book value of the land including the buildings and installations thereon. The total obligation recorded for the lease as of June 30, 2016 is $5.8 million . Depreciation expense related to the capital lease was $0.1 million for the three months ended June 30, 2016 and 2015 and $0.2 million for the six months ended June 30, 2016 and 2015 . Accumulated depreciation at June 30, 2016 and December 31, 2015 was $3.4 million and $3.3 million , respectively. These expenses are included as depreciation expense in cost of sales on our condensed consolidated statements of operations. We also incurred interest expense on the capital lease of $0.1 million for the three months ended June 30, 2016 and 2015 and $0.2 million for the six months ended June 30, 2016 and 2015 . Interest expense related to the debt recorded on the capital lease is included in interest expense on the condensed consolidated statements of operations.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill The changes in the carrying amount of goodwill for the period ending June 30, 2016 , by segment, were as follows: (Dollars in thousands) Advanced Connectivity Solutions Elastomeric Material Solutions Power Electronics Solutions Other Total December 31, 2015 $ 51,931 $ 56,269 $ 65,029 $ 2,224 $ 175,453 Foreign currency translation adjustment 309 — 1,305 — 1,614 June 30, 2016 $ 52,240 $ 56,269 $ 66,334 $ 2,224 $ 177,067 Intangible Assets June 30, 2016 December 31, 2015 (Dollars in thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Trademarks and patents $ 2,557 $ 910 $ 1,647 $ 2,543 $ 718 $ 1,825 Technology 48,300 22,544 25,756 47,724 19,681 28,043 Covenant-not-to-compete 962 962 — 943 943 — Customer relationships 50,314 11,793 38,521 49,948 9,100 40,848 Total definite lived intangible assets 102,133 36,209 65,924 101,158 30,442 70,716 Indefinite lived intangible assets 4,389 — 4,389 4,303 — 4,303 Total intangible assets $ 106,522 $ 36,209 $ 70,313 $ 105,461 $ 30,442 $ 75,019 Gross and net carrying amounts and accumulated amortization may differ from prior periods due to foreign exchange rate fluctuations. Amortization expense for the three and six months ended June 30, 2016 was approximately $2.7 million and $5.3 million , respectively. Amortization expense for the three and six months ended June 30, 2015 was approximately $ 2.8 million and $5.2 million , respectively. The estimated annual future amortization expense is $5.3 million , $10.2 million , $9.6 million , $9.1 million and $5.6 million for the remainder of 2016, 2017, 2018, 2019 and 2020, respectively. The definite-lived intangible assets are amortized using a fair value methodology that is based on the projected economic use of the related underlying asset. The weighted average amortization period as of June 30, 2016 , by intangible asset class, is presented in the table below: Intangible Asset Class Weighted Average Amortization Period (Years) Trademarks and patents 4.0 Technology 4.4 Customer relationships 5.8 Total definite lived intangible assets 5.2 The indefinite-lived trademark intangible assets were acquired from the acquisition of Curamik. These assets are assessed for impairment annually or if changes in circumstances indicate that the carrying values may not be recoverable.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies We are currently engaged in the following environmental and legal proceedings: Voluntary Corrective Action Program The Rogers Corporate Headquarters located in Rogers, Connecticut is part of the Connecticut Voluntary Corrective Action Program (VCAP). As part of this program, we partnered with the Connecticut Department of Energy and Environmental Protection (CT DEEP) to determine the corrective actions to be taken at the site related to contamination issues. We evaluated this matter and completed internal due diligence work related to the site in the fourth quarter of 2015. We recorded an accrual of $3.2 million as of December 31, 2015 for remediation costs expected to be incurred based on the facts and circumstances known to us at that point in time. As of June 30, 2016 , the remaining accrual for future remediation efforts was $3.0 million . Superfund Sites We are currently involved as a potentially responsible party (PRP) in one active case involving a waste disposal site, the Chatham Superfund Site. The costs incurred since inception for this claim have been immaterial and have been primarily covered by insurance policies, for both legal and remediation costs. In this matter, we have been assessed a cost sharing percentage of approximately 2% in relation to the range for estimated total cleanup costs of $18.8 million to $29.6 million . We believe we have sufficient insurance coverage to fully cover this liability and have recorded a liability and related insurance receivable of approximately $0.4 million as of June 30, 2016 , which approximates our share of the low end of the estimated range. We believe we are a de minimis participant and, as such, have been allocated an insignificant percentage of the total PRP cost sharing responsibility. Based on facts presently known to us, we believe that the potential for the final results of this case having a material adverse effect on our results of operations, financial position or cash flows is remote. This case has been ongoing for many years and we believe that it will continue for the indefinite future. No time frame for completion can be estimated at the present time. PCB Contamination We have been working with CT DEEP and the United States Environmental Protection Agency (EPA), Region I, in connection with certain polychlorinated biphenyl (PCB) contamination at our facility in Woodstock, Connecticut. The issue was originally discovered in the soil at the facility in the late 1990s, which has been remediated. Further contamination was later found in the groundwater beneath the property, which was addressed with the installation of a pump and treat system in 2011. The future costs related to the maintenance of the groundwater pump and treat system now in place at the site are expected to be minimal. We believe that the remaining remediation activity will continue for several more years and no time frame for completion can be estimated at the present time. PCB contamination at this facility was also found in the buildings and courtyards original to the site, in addition to surrounding areas, including an on-site pond. We have completed remediation activities for the buildings and courtyards. We currently have a reserve of $0.2 million for the pond remediation recorded in our condensed consolidated statements of financial position. We believe this reserve will be adequate to cover the remaining remediation work related to the pond contamination based on the information known at this time. However, if additional contamination is found, the cost of the remaining remediation may increase. Asbestos Litigation We, like many other industrial companies, have been named as a defendant in a number of lawsuits filed in courts across the country by persons alleging personal injury from exposure to products containing asbestos. We have never mined, milled, manufactured or marketed asbestos; rather, we made and provided to industrial users a limited number of products that contained encapsulated asbestos, but we stopped manufacturing these products in the late 1980s. Most of the claims filed against us involve numerous defendants, sometimes as many as several hundred. The following table presents information about our recent asbestos claims activity: Asbestos Claims Activity Claims outstanding at December 31, 2015 488 New claims filed 162 Pending claims concluded (76 ) Claims outstanding at June 30, 2016 574 For the six months ended June 30, 2016 , 68 claims were dismissed and 8 claims were settled. Settlements totaled approximately $1.4 million for the six months ended June 30, 2016 . We recognize a liability for asbestos-related contingencies that are probable of occurrence and reasonably estimable. In connection with the recognition of liabilities for asbestos related matters, we record asbestos-related insurance receivables that are deemed probable. Our estimates of asbestos-related contingent liabilities and related insurance receivables are based on an independent actuarial analysis and an independent insurance usage analysis prepared annually by third parties. The actuarial analysis contains numerous assumptions, including general assumptions regarding the asbestos-related product liability litigation environment and company-specific assumptions regarding claims rates (including diseases alleged), dismissal rates, average settlement costs and average defense costs. The insurance usage analysis considers, among other things, applicable deductibles, retentions and policy limits, the solvency and historical payment experience of various insurance carriers, the likelihood of recovery as estimated by external legal counsel and existing insurance settlements. We review our asbestos-related forecasts annually in the fourth quarter of each year unless facts and circumstances materially change during the year, at which time we would analyze these forecasts. Currently, these analyses project liabilities and related insurance receivables over a 10 -year period. It is probable we will incur additional costs for asbestos-related claims following this 10 -year period, but we do not believe that any related contingencies are reasonably estimable beyond such period based on, among other things, the significant proportion of future claims included in the analysis and the lag time between the date a claim is filed and its resolution. Accordingly, no liability (or related asset) has yet been recorded for claims that may be asserted subsequent to 2025. As of December 31, 2015 , the asbestos-related claims and insurance receivables for the 10 -year projection period were $56.6 million and $53.4 million , respectively. As of June 30, 2016 , there have been no changes to these projections. To date, the defense and settlement costs of our asbestos-related product liability litigation have been substantially covered by insurance. We have identified continuous coverage for primary, excess and umbrella insurance from the 1950s through the mid-1980s, except for a period in the early 1960s, with respect to which we have entered into an agreement for primary, but not excess or umbrella, coverage. In addition, we have entered into a cost sharing agreement with most of our primary, excess and umbrella insurance carriers to facilitate the ongoing administration and payment of claims by the carriers. The cost sharing agreement may be terminated by any party, but will continue until a party elects to terminate it. As of the filing date for this report, the agreement has not been terminated. As previously disclosed, however, we expect to exhaust individual primary, excess and umbrella coverages over time, and there is no assurance that such exhaustion will not accelerate due to additional claims, damages and settlements or that coverage will be available as expected. Accordingly, while we believe it is reasonably possible that we may incur losses and defense costs in excess of our accruals in the future, we do not have sufficient data to provide a reasonable estimate or range of such losses and defense costs, at this time. The amounts recorded for the asbestos-related liability and the related insurance receivables described above were based on facts known at the time and a number of assumptions. However, projecting future events, such as the number of new claims to be filed each year, the average cost of disposing of such claims, the length of time it takes to dispose of such claims, coverage issues among insurers and the continuing solvency of various insurance companies, as well as the numerous uncertainties surrounding asbestos litigation in the United States could cause the actual liability and insurance recoveries for us to be higher or lower than those projected or recorded. There can be no assurance that our accrued asbestos liabilities will approximate our actual asbestos-related settlement and defense costs, or that our accrued insurance recoveries will be realized. We will continue to vigorously defend ourselves and believe we have substantial unutilized insurance coverage to mitigate future costs related to this matter. General Litigation In addition to the above issues, the nature and scope of our business brings us in regular contact with the general public and a variety of businesses and government agencies. Such activities inherently subject us to the possibility of litigation, including environmental and product liability matters that are defended and handled in the ordinary course of business. We have established accruals for matters for which management considers a loss to be probable and reasonably estimable. It is the opinion of management that facts known at the present time do not indicate that such litigation, after taking into account insurance coverage and the aforementioned accruals, will have a material adverse impact on our results of operations, financial position or cash flows.

Share Repurchase

Share Repurchase	6 Months Ended
	Jun. 30, 2016
Equity [Abstract]
Share Repurchase	Share Repurchase On August 6, 2015 , we initiated a share repurchase program (the Program) of up to $100.0 million of the Company's capital stock. The Program has no expiration date, and may be suspended or discontinued at any time without notice. As of June 30, 2016 , $56.0 million remained to repurchase under the Program. We repurchased the following shares of common stock during the three and six months ended June 30, 2016 : (Dollars in thousands) Quarter Ended June 30, 2016 Six Months Ended June 30, 2016 Shares of capital stock repurchased 31,674 69,641 Value of capital stock repurchased $ 1,999 $ 3,997 All repurchases were made using cash from operations and cash on hand. Refer to Part II, Item 2 for further detail of the Program.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our effective income tax rate was 71.0% and 29.2% for the three months ended June 30, 2016 and 2015 , respectively. Our effective income tax rate was 51.2% and 30.5% for the six months ended June 30, 2016 and 2015 , respectively. The increase from the second quarter of 2015 is primarily due to withholding taxes on off-shore cash movements, a change to our assertion that certain foreign earnings are permanently reinvested and a change in the mix of earnings attributable to higher-taxing jurisdictions. These increases were offset by the benefit associated with an increase compared to the second quarter of 2015 in the reversal of uncertain tax benefits. The second quarter of 2015 also included a benefit due to a change of the state tax rate as a result of a legal reorganization. Historically our intention was to permanently reinvest the majority of our foreign earnings indefinitely or to distribute them only when it is tax efficient to do so. As a result of changes in business circumstances and our long-term business plan, with respect to offshore distributions, we modified our assertion of certain foreign subsidiary earnings considered permanently reinvested. A deferred tax liability of $3.4 million associated with distribution related foreign taxes on prior years undistributed earnings of our Chinese subsidiaries that are no longer considered permanently reinvested was recorded in the second quarter. In the event that we repatriated these funds to other offshore subsidiaries, these taxes would become due. In addition, we incurred $5.5 million of withholding taxes related to distributions from China. Our accounting policy is to account for interest expense and penalties related to uncertain tax positions as income tax expense. As of June 30, 2016 , we have approximately $0.6 million of accrued interest related to uncertain tax positions included in the $9.8 million of unrecognized tax benefits, $9.7 million of which, if recognized, would impact the effective tax rate. It is possible that up to $5.3 million of our currently unrecognized tax benefits could be recognized within 12 months as a result of projected resolutions of worldwide tax disputes or expiration of the statute of limitations. We are subject to taxation in the U.S. and various state and foreign jurisdictions. Our tax years from 2012 through 2015 are subject to examination by these various tax authorities. With few exceptions, we are no longer subject to U.S. federal, state, local and foreign examinations by tax authorities for years before 2012. As of December 31, 2015, deferred tax assets and liabilities are presented as current and non-current. We elected to prospectively adopt Accounting Standards Update (ASU) No. 2015-17, Income Taxes: Balance Sheet Classification of Deferred Taxes , as of March 31, 2016, and therefore all deferred taxes are classified as non-current in our condensed consolidated statement of financial position as of June 30, 2016. See Note 17 below for further information. For both periods, deferred tax assets and liabilities within the same tax jurisdiction are offset for presentation in the Consolidated Statement of Financial Position.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2016
Accounting Policies [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued ASU No. 2014-09, Revenue from Contracts with Customers, to achieve a consistent application of revenue recognition within the U.S., resulting in a single revenue model to be applied by reporting companies under U.S. generally accepted accounting principles. Under the new model, recognition of revenue occurs when a customer obtains control of promised goods or services in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In addition, the new standard requires that reporting companies disclose the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. On July 9, 2015, the FASB agreed to delay the effective date by one year. In accordance with the agreed upon delay, the new standard is effective for us beginning in the first quarter of 2018. Early adoption is permitted, but not before the original effective date of the standard. The new standard is required to be applied retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying it recognized at the date of initial application. We have not yet selected a transition method nor have we determined the impact of the new standard on our consolidated condensed financial statements. In April 2015, the FASB issued ASU No. 2015-03, Simplifying the Presentation of Debt Issuance Costs , which changed the presentation of debt issuance costs in the balance sheet. The new guidance requires that debt issuance costs no longer be classified as an asset, but rather as an offset to the outstanding debt. The amortization of these costs continues to be recorded as an interest expense. We adopted this standard in the first quarter of 2016. The new standard is required to be applied retrospectively. The application of this guidance resulted in reclassifications of debt issuance costs of $0.5 million from current assets to the current portion of long-term debt as of June 30, 2016 and December 31, 2015 . The application of this guidance resulted in reclassifications of debt issuance costs from long term assets to long-term debt of $1.4 million and $1.6 million as of June 30, 2016 and December 31, 2015 , respectively. In November 2015, the FASB issued ASU No. 2015-17, Income Taxes: Balance Sheet Classification of Deferred Taxes . This ASU requires all deferred tax assets and liabilities to be classified as noncurrent. ASU No. 2015-17 is effective for fiscal years and interim periods within those years beginning after December 15, 2016 with early adoption permitted. We elected to prospectively adopt ASU No. 2015-17 as of March 31, 2016. The adoption of this guidance did not have any impact on the Company's condensed consolidated statements of operations or cashflows. Had we applied this guidance retrospectively, $9.6 million would have been reclassified from current deferred tax assets to long term deferred tax assets in our consolidated statement of financial position as of December 31, 2015 . See Note 16 - "Income Taxes" for further information. In February 2016, the FASB issued ASU No. 2016-02, Leases . ASU No. 2016-2 sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e., lessees and lessors). The new standard requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on whether the lease effectively finances a purchase by the lessee. This classification will determine whether lease expense is recognized based on an effective interest method (finance lease) or on a straight line basis over the term of the lease (operating lease). A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. Leases with a term of 12 months or less will be accounted for similar to existing guidance for operating leases today. ASU No. 2016-2 supersedes the existing guidance on accounting for leases. The provisions of ASU No. 2016-2 are effective for fiscal years, and interim reporting periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted and the provisions are to be applied using a modified retrospective approach. We are in the process of evaluating the impact of adoption on our consolidated financial statements. In March 2016, the FASB issued ASU 2016-05, which clarifies that a change in counterparty of a derivative contract in a hedge accounting relationship does not, in and of itself, require dedesignation of that hedge accounting relationship. This ASU amends ASC 815 to clarify that such a change does not, in and of itself, represent a termination of the original derivative instrument or a change in the critical terms of the hedge relationship. We are currently evaluating the impact this new standard will have on our financial statements. In March 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting . This ASU contains amendments intended to simplify various aspects of share-based payment accounting and presentation in the financial statements, including the income tax consequences, classification of awards as either equity or liabilities, treatment of forfeitures and statutory tax withholding requirements, and classification in the statement of cash flows. The new standard is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early adoption of this standard is permitted. The amendments requiring recognition in the income statement of excess tax benefits and tax deficiencies resulting from settlements arising after the date of adoption of the new standard should be applied prospectively. Changes relating to classification of excess tax benefits and tax deficiencies in the statement of cash flows may be applied either prospectively or retrospectively. All other amendments are to be applied retrospectively. We have not elected early adoption of this standard. We are currently evaluating the impact this new standard will have on our financial statements.

Recent Accounting Pronounceme25

Recent Accounting Pronouncements (Policies)	6 Months Ended
	Jun. 30, 2016
Accounting Policies [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued ASU No. 2014-09, Revenue from Contracts with Customers, to achieve a consistent application of revenue recognition within the U.S., resulting in a single revenue model to be applied by reporting companies under U.S. generally accepted accounting principles. Under the new model, recognition of revenue occurs when a customer obtains control of promised goods or services in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In addition, the new standard requires that reporting companies disclose the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. On July 9, 2015, the FASB agreed to delay the effective date by one year. In accordance with the agreed upon delay, the new standard is effective for us beginning in the first quarter of 2018. Early adoption is permitted, but not before the original effective date of the standard. The new standard is required to be applied retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying it recognized at the date of initial application. We have not yet selected a transition method nor have we determined the impact of the new standard on our consolidated condensed financial statements. In April 2015, the FASB issued ASU No. 2015-03, Simplifying the Presentation of Debt Issuance Costs , which changed the presentation of debt issuance costs in the balance sheet. The new guidance requires that debt issuance costs no longer be classified as an asset, but rather as an offset to the outstanding debt. The amortization of these costs continues to be recorded as an interest expense. We adopted this standard in the first quarter of 2016. The new standard is required to be applied retrospectively. The application of this guidance resulted in reclassifications of debt issuance costs of $0.5 million from current assets to the current portion of long-term debt as of June 30, 2016 and December 31, 2015 . The application of this guidance resulted in reclassifications of debt issuance costs from long term assets to long-term debt of $1.4 million and $1.6 million as of June 30, 2016 and December 31, 2015 , respectively. In November 2015, the FASB issued ASU No. 2015-17, Income Taxes: Balance Sheet Classification of Deferred Taxes . This ASU requires all deferred tax assets and liabilities to be classified as noncurrent. ASU No. 2015-17 is effective for fiscal years and interim periods within those years beginning after December 15, 2016 with early adoption permitted. We elected to prospectively adopt ASU No. 2015-17 as of March 31, 2016. The adoption of this guidance did not have any impact on the Company's condensed consolidated statements of operations or cashflows. Had we applied this guidance retrospectively, $9.6 million would have been reclassified from current deferred tax assets to long term deferred tax assets in our consolidated statement of financial position as of December 31, 2015 . See Note 16 - "Income Taxes" for further information. In February 2016, the FASB issued ASU No. 2016-02, Leases . ASU No. 2016-2 sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e., lessees and lessors). The new standard requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on whether the lease effectively finances a purchase by the lessee. This classification will determine whether lease expense is recognized based on an effective interest method (finance lease) or on a straight line basis over the term of the lease (operating lease). A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. Leases with a term of 12 months or less will be accounted for similar to existing guidance for operating leases today. ASU No. 2016-2 supersedes the existing guidance on accounting for leases. The provisions of ASU No. 2016-2 are effective for fiscal years, and interim reporting periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted and the provisions are to be applied using a modified retrospective approach. We are in the process of evaluating the impact of adoption on our consolidated financial statements. In March 2016, the FASB issued ASU 2016-05, which clarifies that a change in counterparty of a derivative contract in a hedge accounting relationship does not, in and of itself, require dedesignation of that hedge accounting relationship. This ASU amends ASC 815 to clarify that such a change does not, in and of itself, represent a termination of the original derivative instrument or a change in the critical terms of the hedge relationship. We are currently evaluating the impact this new standard will have on our financial statements. In March 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting . This ASU contains amendments intended to simplify various aspects of share-based payment accounting and presentation in the financial statements, including the income tax consequences, classification of awards as either equity or liabilities, treatment of forfeitures and statutory tax withholding requirements, and classification in the statement of cash flows. The new standard is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early adoption of this standard is permitted. The amendments requiring recognition in the income statement of excess tax benefits and tax deficiencies resulting from settlements arising after the date of adoption of the new standard should be applied prospectively. Changes relating to classification of excess tax benefits and tax deficiencies in the statement of cash flows may be applied either prospectively or retrospectively. All other amendments are to be applied retrospectively. We have not elected early adoption of this standard. We are currently evaluating the impact this new standard will have on our financial statements.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2016
Fair Value Disclosures [Abstract]
Assets Measured at Fair Value on a Recurring Basis, Categorized by the Level of Inputs Used in the Valuation	From time to time we enter into various instruments that require fair value measurement. Assets and liabilities measured on a recurring basis, categorized by the level of inputs used in the valuation, included: (Dollars in thousands) Carrying amount as of June 30, 2016 Level 1 Level 2 Level 3 Foreign currency contracts $ 908 $ — $ 908 $ — Copper derivative contracts $ 315 $ — $ 315 $ — Interest rate swap $ — $ — $ — $ — (Dollars in thousands) Carrying amount as of December 31, 2015 Level 1 Level 2 Level 3 Foreign currency contracts $ (78 ) $ — $ (78 ) $ — Copper derivative contracts $ 193 $ — $ 193 $ — Interest rate swap $ (18 ) $ — $ (18 ) $ —

Hedging Transactions and Deri27

Hedging Transactions and Derivative Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions	The notional values of our copper contracts outstanding as of June 30, 2016 were: Notional Value of Copper Derivatives July 2016 - September 2016 127 metric tons per month October 2016 - December 2016 117 metric tons per month January 2017 - March 2017 95 metric tons per month April 2017 - June 2017 61 metric tons per month July 2017 - September 2017 28 metric tons per month As of June 30, 2016 the notional values of these foreign currency forward contracts were: Notional Values of Foreign Currency Derivatives CNY/USD ¥ 1,189,444 USD/EUR € 43,177,841 USD/KRW ₩ 12,239,440,000 JPY/EUR ¥ 169,000,000 EUR/GBP £ 39,000 JPY/USD ¥ 19,000,000 HUF/EUR € 811,955
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	Effects on Statements of Operations and of Comprehensive Income (Loss): (Dollars in thousands) The Effect of Current Derivative Instruments on the Financial Statements for the period ended June 30, 2016 Fair Values of Derivative Instruments as of June 30, 2016 Gain (Loss) Other Assets (Liabilities) Foreign Exchange Contracts Location Quarter Ended Six Months Ended Contracts not designated as hedging instruments Other income (expense), net $ 943 $ 908 $ 908 Copper Derivatives Contracts not designated as hedging instruments Other income (expense), net $ (79 ) $ (103 ) $ 315 Interest Rate Swap Contracts designated as hedging instruments Other comprehensive income (loss) $ — $ — $ — (Dollars in thousands) The Effect of Current Derivative Instruments on the Financial Statements for the period ended June 30, 2015 Fair Values of Derivative Instruments as of June 30, 2015 Gain (Loss) Other Assets (Liabilities) Foreign Exchange Contracts Location Quarter Ended Six Months Ended Contracts designated as hedging instruments Other comprehensive income (loss) $ (335 ) $ (100 ) $ 274 Contracts not designated as hedging instruments Other income (expense), net $ (125 ) $ (398 ) $ (39 ) Copper Derivatives Contracts not designated as hedging instruments Other income (expense), net $ (157 ) $ (449 ) $ 436 Interest Rate Swap Contracts designated as hedging instruments Other comprehensive income (loss) $ 35 $ 51 $ (93 )

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2016
Inventory Disclosure [Abstract]
Schedule Changes in Accounting Principles	The following table summarizes the effect of this accounting change on our condensed consolidated statements of operations for the quarter ended June 30, 2015 : Quarter Ended June 30, 2015 (Dollars in thousands, except per share amounts) As Originally Reported Under LIFO As Adjusted under FIFO Effect of Change Cost of sales $ 102,509 $ 102,437 $ (72 ) Net income $ 13,540 $ 13,554 $ 14 Basic earnings per share $ 0.73 $ 0.73 $ — Diluted earnings per share $ 0.71 $ 0.71 $ — The following table summarizes the effect of this accounting change on our condensed consolidated statements of operations for the six months ended June 30, 2015 : Six Months Ended June 30, 2015 (Dollars in thousands, except per share amounts) As Originally Reported Under LIFO As Adjusted under FIFO Effect of Change 2015 Cost of sales $ 205,205 $ 205,063 $ (142 ) Net income $ 27,167 $ 27,197 $ 30 Basic earnings per share $ 1.46 $ 1.47 $ — Diluted earnings per share $ 1.43 $ 1.43 $ —
Inventories	Inventories were as follows at the end of the periods noted below: (Dollars in thousands) June 30, December 31, Raw materials $ 32,070 $ 35,499 Work-in-process 22,284 22,804 Finished goods 33,903 33,521 Total Inventories $ 88,257 $ 91,824

Accumulated Other Comprehensi29

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Balances Related to Each Component of Accumulated Other Comprehensive Income (Loss)	The changes in accumulated other comprehensive income (loss) by component at June 30, 2016 and 2015 we re as follows: (Dollars in thousands) Foreign currency translation adjustments Funded status of pension plans and other postretirement benefits (1) Unrealized gain (loss) on derivative instruments (2) Total Beginning Balance December 31, 2014 $ (14,193 ) $ (50,808 ) $ (93 ) $ (65,094 ) Other comprehensive income (loss) before reclassifications (19,250 ) — $ (160 ) (19,410 ) Amounts reclassified from accumulated other comprehensive income (loss) (3) — 531 $ 94 625 Net current-period other comprehensive income (loss) (19,250 ) 531 $ (66 ) (18,785 ) Ending Balance June 30, 2015 $ (33,443 ) $ (50,277 ) $ (159 ) $ (83,879 ) Beginning Balance December 31, 2015 $ (41,365 ) $ (47,082 ) $ (11 ) $ (88,458 ) Other comprehensive income (loss) before reclassifications 5,197 — — 5,197 Amounts reclassified from accumulated other comprehensive income (loss) (4) — 71 11 82 Net current-period other comprehensive income (loss) 5,197 71 11 5,279 Ending Balance June 30, 2016 $ (36,168 ) $ (47,011 ) $ — $ (83,179 ) (1) Net of taxes of $9,840 and $9,879 as of June 30, 2016 and December 31, 2015 , respectively. Net of taxes of $11,657 and $11,952 as of June 30, 2015 and December 31, 2014 , respectively. (2) Net of taxes of $0 and $5 as of June 30, 2016 and December 31, 2015 , respectively. Net of taxes of $33 and $50 as of June 30, 2015 and December 31, 2014 , respectively. (3) Net of taxes of $286 and $50 for the pension plans and postretirement benefits and unrealized gain (loss) on derivatives, respectively. (4) Net of taxes of $38 and $6 for the pension plans and postretirement benefits and unrealized gain (loss) on derivatives, respectively.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2016
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table sets forth the computation of basic and diluted earnings per share, for the periods indicated: (In thousands, except per share amounts) Quarter Ended Six Months Ended June 30, June 30, June 30, June 30, Numerator: Net income $ 5,377 $ 13,554 $ 20,305 $ 27,197 Denominator: Weighted-average shares outstanding - basic 18,007 18,627 17,986 18,551 Effect of dilutive shares 246 429 248 452 Weighted-average shares outstanding - diluted 18,253 19,056 18,234 19,003 Basic earnings per share $ 0.30 $ 0.73 $ 1.13 $ 1.47 Diluted earnings per share $ 0.29 $ 0.71 $ 1.11 $ 1.43

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2016
Summary of Activity Under Stock Option Plans	A summary of the activity under our stock option plans as of June 30, 2016 and changes during the three and six months then ended, is presented below: Options Outstanding Weighted- Average Exercise Price Per Share Weighted-Average Remaining Contractual Life in Years Aggregate Intrinsic Value Options outstanding at March 31, 2016 198,366 $ 40.31 3.3 $ 3,934,582 Options exercised (41,959 ) $ 35.60 Options forfeited (350 ) $ 44.32 Options outstanding at June 30, 2016 156,057 $ 41.57 3.1 $ 3,085,731 Options exercisable at June 30, 2016 156,057 $ 41.57 3.1 $ 3,085,731 Options vested at June 30, 2016 156,057 $ 41.57 3.1 $ 3,085,731 Options Outstanding Weighted- Average Exercise Price Per Share Options outstanding at December 31, 2015 212,038 $ 40.47 Options exercised (55,631 ) $ 36.99 Options forfeited (350 ) $ 44.32 Options outstanding at June 30, 2016 156,057 $ 41.57
Assumptions Used in Calculation of Fair Value	Below were the assumptions used in the Monte Carlo calculation: June 30, June 30, Expected volatility 29.6% 28.2% Expected term (in years) 3.0 3.0 Risk-free interest rate 0.93% 0.96%
Performance-Based Restricted Stock
Restricted Stock Activities	Performance-Based Restricted Stock Awards Non-vested awards outstanding at December 31, 2015 107,229 Awards granted 81,220 Stock issued (25,397 ) Awards forfeited (8,401 ) Non-vested awards outstanding at June 30, 2016 154,651
Time Based Restricted Stock
Restricted Stock Activities	Time-Based Restricted Stock Awards Non-vested awards outstanding at December 31, 2015 208,318 Awards granted 117,510 Stock issued (47,089 ) Awards forfeited (16,247 ) Non-vested awards outstanding at June 30, 2016 262,492
Deferred Stock Units
Restricted Stock Activities	Deferred Stock Units Awards outstanding at December 31, 2015 23,950 Awards granted 11,900 Stock issued (20,000 ) Awards outstanding at June 30, 2016 15,850

Pension Benefits and Other Po32

Pension Benefits and Other Postretirement Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2016
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Components of net periodic benefit cost	The components of net periodic benefit cost (income) for the periods indicated were: (Dollars in thousands) Pension Benefits Retirement Health and Life Insurance Benefits Quarter Ended Six Months Ended Quarter Ended Six Months Ended Change in benefit obligation: June 30, 2016 June 30, 2015 June 30, 2016 June 30, 2015 June 30, 2016 June 30, 2015 June 30, 2016 June 30, 2015 Service cost $ — $ — $ — $ — $ 37 $ 150 $ 74 $ 300 Interest cost 1,893 1,838 3,786 3,677 19 75 38 150 Expected return on plan assets (2,706 ) (2,771 ) (5,412 ) (5,542 ) — — — — Amortization of prior service cost (credit) — — — — (373 ) — (746 ) — Amortization of net loss (gain) 447 413 894 826 (19 ) — (38 ) — Net periodic (benefit) cost $ (366 ) $ (520 ) $ (732 ) $ (1,039 ) $ (336 ) $ 225 $ (672 ) $ 450

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2016
Segment Reporting [Abstract]
Reportable Segment Information	The following table sets forth the information about our segments for the periods indicated, inter-segment sales have been eliminated from the net sales data: Quarter Ended Six Months Ended (Dollars in thousands) June 30, June 30, June 30, June 30, Net sales Advanced Connectivity Solutions $ 67,222 $ 66,408 $ 140,598 $ 137,695 Elastomeric Material Solutions 45,767 47,016 92,084 91,572 Power Electronics Solutions 38,363 38,539 73,614 77,068 Other 6,137 11,135 11,760 21,814 Net sales $ 157,489 $ 163,098 $ 318,056 $ 328,149 Operating income Advanced Connectivity Solutions $ 10,829 $ 12,076 $ 26,729 $ 24,944 Elastomeric Material Solutions 5,348 5,548 10,653 8,581 Power Electronics Solutions 477 877 1,773 3,268 Other 2,102 2,081 3,701 3,959 Operating income 18,756 20,582 42,856 40,752 Equity income in unconsolidated joint ventures 708 392 1,321 1,311 Other income (expense), net 191 (517 ) (356 ) (646 ) Interest expense, net (1,115 ) (1,304 ) (2,236 ) (2,310 ) Income before income tax expense $ 18,540 $ 19,153 $ 41,585 $ 39,107

Joint Ventures (Tables)

Joint Ventures (Tables)	6 Months Ended
	Jun. 30, 2016
Equity Method Investments and Joint Ventures [Abstract]
Joint Ventures Accounted for Under Equity Method of Accounting	As of June 30, 2016 , we had two joint ventures, each 50% owned, which were accounted for under the equity method of accounting. Joint Venture Location Reportable Segment Fiscal Year-End Rogers INOAC Corporation (RIC) Japan Elastomeric Material Solutions October 31 Rogers INOAC Suzhou Corporation (RIS) China Elastomeric Material Solutions December 31
Summarized Information for Joint Ventures	The summarized financial information for the joint ventures for the periods indicated was as follows: Quarter Ended Six Months Ended (Dollars in thousands) June 30, June 30, June 30, June 30, Net sales $ 11,210 $ 9,708 $ 20,386 $ 20,613 Gross profit $ 3,435 $ 1,865 $ 6,597 $ 4,927 Net income $ 1,416 $ 784 $ 2,642 $ 2,622

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2016
Debt Disclosure [Abstract]
Schedule of Maturities of Long-term Debt	As of June 30, 2016 , the remaining aggregate mandatory principal payments were as follows: 2016 $2.1 million 2017 $4.1 million 2018 $4.8 million 2019 $5.5 million 2020 $160.8 million

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The changes in the carrying amount of goodwill for the period ending June 30, 2016 , by segment, were as follows: (Dollars in thousands) Advanced Connectivity Solutions Elastomeric Material Solutions Power Electronics Solutions Other Total December 31, 2015 $ 51,931 $ 56,269 $ 65,029 $ 2,224 $ 175,453 Foreign currency translation adjustment 309 — 1,305 — 1,614 June 30, 2016 $ 52,240 $ 56,269 $ 66,334 $ 2,224 $ 177,067
Intangible Assets	Intangible Assets June 30, 2016 December 31, 2015 (Dollars in thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Trademarks and patents $ 2,557 $ 910 $ 1,647 $ 2,543 $ 718 $ 1,825 Technology 48,300 22,544 25,756 47,724 19,681 28,043 Covenant-not-to-compete 962 962 — 943 943 — Customer relationships 50,314 11,793 38,521 49,948 9,100 40,848 Total definite lived intangible assets 102,133 36,209 65,924 101,158 30,442 70,716 Indefinite lived intangible assets 4,389 — 4,389 4,303 — 4,303 Total intangible assets $ 106,522 $ 36,209 $ 70,313 $ 105,461 $ 30,442 $ 75,019
Weighted Average Amortization Period, by Intangible Asset Class	The weighted average amortization period as of June 30, 2016 , by intangible asset class, is presented in the table below: Intangible Asset Class Weighted Average Amortization Period (Years) Trademarks and patents 4.0 Technology 4.4 Customer relationships 5.8 Total definite lived intangible assets 5.2

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense	The following table presents information about our recent asbestos claims activity: Asbestos Claims Activity Claims outstanding at December 31, 2015 488 New claims filed 162 Pending claims concluded (76 ) Claims outstanding at June 30, 2016 574

Share Repurchase (Tables)

Share Repurchase (Tables)	6 Months Ended
	Jun. 30, 2016
Equity [Abstract]
Schedule of Share Repurchase Activity	We repurchased the following shares of common stock during the three and six months ended June 30, 2016 : (Dollars in thousands) Quarter Ended June 30, 2016 Six Months Ended June 30, 2016 Shares of capital stock repurchased 31,674 69,641 Value of capital stock repurchased $ 1,999 $ 3,997

Fair Value Measurements (Variou

Fair Value Measurements (Various Instruments That Require Fair Value Measurement) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts	$ 908	$ (78)
Copper derivative contracts	315	193
Interest rate swap	0	(18)
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts	0	0
Copper derivative contracts	0	0
Interest rate swap	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts	908	(78)
Copper derivative contracts	315	193
Interest rate swap	0	(18)
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts	0	0
Copper derivative contracts	0	0
Interest rate swap	$ 0	$ 0

Hedging Transactions and Deri40

Hedging Transactions and Derivative Financial Instruments (Notional Values of Derivative Instruments) (Details) - Contracts designated as hedging instruments	Jun. 30, 2016JPY (¥)T	Jun. 30, 2016GBP (£)T	Jun. 30, 2016CNY (¥)T	Jun. 30, 2016KRW (₩)T	Jun. 30, 2016EUR (€)T
July 2016 - September 2016
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	127	127	127	127	127
October 2016 - December 2016
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	117	117	117	117	117
January 2017 - March 2017
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	95	95	95	95	95
April 2017 - June 2017
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	61	61	61	61	61
July 2017 - September 2017
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	28	28	28	28	28
CNY/USD
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives | ¥			¥ 1,189,444
USD/EUR
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives | €					€ 43,177,841
USD/KRW
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives | ₩				₩ 12,239,440,000
JPY/EUR
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives | ¥	¥ 169,000,000
EUR/GBP
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives | £		£ 39,000
JPY/USD
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives | ¥	¥ 19,000,000
HUF/EUR
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives | €					€ 811,955

Hedging Transactions and Deri41

Hedging Transactions and Derivative Financial Instruments (Additional Information) (Details) - Bank Term Loan $ in Millions	Jun. 30, 2016USD ($)Contract
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of derivative contracts related to minimizing risk associated with potential rise in copper prices (contract) | Contract	24
Term loan debt | $	$ 52.3

Hedging Transactions and Deri42

Hedging Transactions and Derivative Financial Instruments (Effect and Fair Value of Derivative Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Contracts not designated as hedging instruments | Other income (expense), net | Foreign Exchange Contracts
Derivative [Line Items]
Effect of current derivative instruments	$ 943	$ (125)	$ 908	$ (398)
Fair Values of Derivative Instruments	908	(39)	908	(39)
Contracts not designated as hedging instruments | Other income (expense), net | Copper Derivatives
Derivative [Line Items]
Effect of current derivative instruments	(79)	(157)	(103)	(449)
Fair Values of Derivative Instruments	315	436	315	436
Contracts designated as hedging instruments | Other comprehensive income (loss) | Foreign Exchange Contracts
Derivative [Line Items]
Effect of current derivative instruments		(335)		(100)
Fair Values of Derivative Instruments		274		274
Contracts designated as hedging instruments | Other comprehensive income (loss) | Interest Rate Swap
Derivative [Line Items]
Effect of current derivative instruments	0	35	0	51
Fair Values of Derivative Instruments	$ 0	$ (93)	$ 0	$ (93)

Inventories - Schedule of Chang

Inventories - Schedule of Changes in Accounting Principles (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales	$ 97,290	$ 102,437	$ 197,349	$ 205,063
Net income	$ 5,377	$ 13,554	$ 20,305	$ 27,197
Basic earnings per share (in dollars per share)	$ 0.30	$ 0.73	$ 1.13	$ 1.47
Diluted earnings per share (in dollars per share)	$ 0.29	$ 0.71	$ 1.11	$ 1.43
As Originally Reported Under LIFO
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales		$ 102,509		$ 205,205
Net income		$ 13,540		$ 27,167
Basic earnings per share (in dollars per share)		$ 0.73		$ 1.46
Diluted earnings per share (in dollars per share)		$ 0.71		$ 1.43
Effect of Change
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales		$ (72)		$ (142)
Net income		$ 14		$ 30
Basic earnings per share (in dollars per share)		$ 0		$ 0
Diluted earnings per share (in dollars per share)		$ 0		$ 0

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Raw materials	$ 32,070	$ 35,499
Work-in-process	22,284	22,804
Finished goods	33,903	33,521
Total Inventories	$ 88,257	$ 91,824

Acquisition (Additional Informa

Acquisition (Additional Information) (Details) - Arlon - USD ($) $ in Millions	Jan. 22, 2015	Mar. 31, 2015
Business Acquisition [Line Items]
Consideration transferred	$ 157
Revolving Credit Facility
Business Acquisition [Line Items]
Proceeds from line of credit	$ 125	$ 125

Accumulated Other Comprehensi46

Accumulated Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016		Jun. 30, 2015		Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance				$ (88,458)		$ (65,094)
Other comprehensive income (loss) before reclassifications				5,197		(19,410)
Amounts reclassified from accumulated other comprehensive income (loss)				82	[1]	625	[2]
Other comprehensive income (loss)		$ (5,688)	$ 8,709	5,279		(18,785)
Ending balance		(83,179)	(83,879)	(83,179)		(83,879)
AOCI, Pension and other postretirement benefit plans, tax		9,840	11,657	9,840		11,657		$ 9,879	$ 11,952
AOCI, Cumulative changes in net gain (loss) from cash flow hedges, tax		0	33	0		33		$ 5	$ 50
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance				(41,365)		(14,193)
Other comprehensive income (loss) before reclassifications				5,197		(19,250)
Amounts reclassified from accumulated other comprehensive income (loss)				0	[1]	0	[2]
Other comprehensive income (loss)				5,197		(19,250)
Ending balance		(36,168)	(33,443)	(36,168)		(33,443)
Funded status of pension plans and other postretirement benefits
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	[3]			(47,082)		(50,808)
Other comprehensive income (loss) before reclassifications	[3]			0		0
Amounts reclassified from accumulated other comprehensive income (loss)	[3]			71	[1]	531	[2]
Other comprehensive income (loss)	[3]			71		531
Ending balance	[3]	(47,011)	(50,277)	(47,011)		(50,277)
Reclassification from AOCI, Current Period, Tax				286		38
Unrealized gain (loss) on derivative instruments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	[4]			(11)		(93)
Other comprehensive income (loss) before reclassifications	[4]					(160)
Amounts reclassified from accumulated other comprehensive income (loss)	[4]			11	[1]	94	[2]
Other comprehensive income (loss)	[4]			11		(66)
Ending balance	[4]	$ 0	$ (159)	0		(159)
Reclassification from AOCI, Current Period, Tax				$ 50		$ 6
[1]	Net of taxes of $38 and $6 for the pension plans and postretirement benefits and unrealized gain (loss) on derivatives, respectively.
[2]	Net of taxes of $286 and $50 for the pension plans and postretirement benefits and unrealized gain (loss) on derivatives, respectively.
[3]	Net of taxes of $11,657 and $11,952 as of June 30, 2015 and December 31, 2014, respectively.
[4]	Net of taxes of $0 and $5 as of June 30, 2016 and December 31, 2015, respectively. Net of taxes of $33 and $50 as of June 30, 2015 and December 31, 2014, respectively.

Earnings Per Share (Computation

Earnings Per Share (Computation of Basic and Diluted) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Numerator:
Net income	$ 5,377	$ 13,554	$ 20,305	$ 27,197
Denominator:
Weighted-average shares outstanding - basic (shares)	18,007,000	18,627,000	17,986,000	18,551,000
Effect of dilutive shares (shares)	246,000	429,000	248,000	452,000
Weighted-average shares outstanding - diluted (shares)	18,253,000	19,056,000	18,234,000	19,003,000
Basic earnings per share (in dollars per share)	$ 0.30	$ 0.73	$ 1.13	$ 1.47
Diluted earnings per share (in dollars per share)	$ 0.29	$ 0.71	$ 1.11	$ 1.43
Anti-dilutive shares excluded (shares)	13,500	0

Stock-Based Compensation (Addit

Stock-Based Compensation (Additional Information) (Details) $ in Millions	3 Months Ended		6 Months Ended		51 Months Ended
	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)offering_periods	Jun. 30, 2015USD ($)	Jun. 30, 2016shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options			$ 2.1
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)	$ 0.7	$ 0.7	$ 0.7	$ 0.7
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, contractual term (years)			10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares					0
Stock-based compensation, approximate forfeitures rate (percent)			3.00%
Compensation expense (income)	0	0.1	$ 0	0.1
Options exercised, total intrinsic value			$ 1.4
Performance-Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, approximate forfeitures rate (percent)			12.00%
Compensation expense (income)	1.4	1.2	$ 2.1	1.6
Restricted stock award program, measurement period (years)			3 years
Expected dividend yield (percent)			0.00%
Performance-Based Restricted Stock | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock award program, awarded shares as a percentage of the original award amount (percent)			0.00%
Performance-Based Restricted Stock | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock award program, awarded shares as a percentage of the original award amount (percent)			200.00%
Time Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, approximate forfeitures rate (percent)			12.00%
Compensation expense (income)	1.5	1.3	$ 2.7	2.4
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)	$ 0.1	$ 0.1	$ 0.2	$ 0.2
Employee stock purchase plan, number of offering (offering period) | offering_periods			2
Employee stock purchase plan, offering period (months)			6 months
Employee stock purchase plan, purchase price discount (percent)			15.00%

Stock-Based Compensation (Summa

Stock-Based Compensation (Summary of Activity Under Stock Option Plans) (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Options Outstanding
Options outstanding at December 31, 2015 (shares)	198,366	212,038
Options exercised (shares)	(41,959)	(55,631)
Options forfeited (shares)	(350)	(350)
Options outstanding at June 30, 2016 (shares)	156,057	156,057	212,038
Options exercisable at June 30, 2016 (shares)	156,057	156,057
Options vested at June 30, 2016 (shares)	156,057	156,057
Weighted- Average Exercise Price Per Share
Options outstanding at December 31, 2015 (in USD per share)	$ 40.31	$ 40.47
Options exercised (in USD per share)	35.60	36.99
Options forfeited (dollars per share)	44.32	44.32
Options outstanding at June 30, 2016 (in USD per share)	41.57	41.57	$ 40.47
Options exercisable at June 30, 2016 (in USD per share)	41.57	41.57
Options vested at June 30, 2016 (in USD per share)	$ 41.57	$ 41.57
Weighted-Average Remaining Contractual Life in Years
Weighted-Average Remaining Contractual Life in Year, Options outstanding	3 years 1 month 6 days		3 years 3 months 18 days
Options exercisable, Weighted-Average Remaining Contractual Life in Years (years)	3 years 1 month 6 days
Options vested, Weighted-Average Remaining Contractual Life in Years (years)	3 years 1 month 6 days
Aggregate Intrinsic Value
Options outstanding, Aggregate Intrinsic Value at December 31, 2015	$ 3,934,582
Options outstanding, Aggregate Intrinsic Value, at June 30, 2016	3,085,731	$ 3,085,731
Options exercisable, Aggregate Intrinsic Value	3,085,731	3,085,731
Options vested, Aggregate Intrinsic Value	$ 3,085,731	$ 3,085,731

Stock-Based Compensation (Monte

Stock-Based Compensation (Monte Carlo Calculation Assumptions) (Details) - Performance-Based Restricted Stock	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility (percent)	29.60%	28.20%
Expected term (years)	3 years	3 years
Risk-free interest rate (percent)	0.93%	0.96%

Stock-Based Compensation (Perfo

Stock-Based Compensation (Performance Based Restricted Stock Awards) (Details) - Performance-Based Restricted Stock	6 Months Ended
	Jun. 30, 2016shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Non-vested awards outstanding beginning balance (shares)	107,229
Awards granted (shares)	81,220
Stock issued (shares)	(25,397)
Awards forfeited (shares)	(8,401)
Non-vested awards outstanding ending balance (shares)	154,651

Stock-Based Compensation (Time

Stock-Based Compensation (Time Based Restricted Stock Awards) (Details) - Time Based Restricted Stock	6 Months Ended
	Jun. 30, 2016shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Non-vested awards outstanding beginning balance (shares)	208,318
Awards granted (shares)	117,510
Stock issued (shares)	(47,089)
Awards forfeited (shares)	(16,247)
Non-vested awards outstanding ending balance (shares)	262,492

Stock-Based Compensation (Defer

Stock-Based Compensation (Deferred Stock Units) (Details) - Deferred Stock Units	6 Months Ended
	Jun. 30, 2016shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion ratio	1
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Non-vested awards outstanding beginning balance (shares)	23,950
Awards granted (shares)	11,900
Stock issued (shares)	(20,000)
Non-vested awards outstanding ending balance (shares)	15,850

Pension Benefits and Other Po54

Pension Benefits and Other Postretirement Benefit Plans (Components of Net Periodic Benefit Cost) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2016
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 1,893,000	$ 1,838,000	$ 3,786,000	$ 3,677,000
Expected return on plan assets	(2,706,000)	(2,771,000)	(5,412,000)	(5,542,000)
Amortization of net loss (gain)	447,000	413,000	894,000	826,000
Net periodic (benefit) cost	(366,000)	(520,000)	(732,000)	(1,039,000)
Retirement Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	37,000	150,000	74,000	300,000
Interest cost	19,000	75,000	38,000	150,000
Amortization of prior service cost (credit)	(373,000)	0	(746,000)
Amortization of net loss (gain)	(19,000)		(38,000)
Net periodic (benefit) cost	(336,000)	225,000	(672,000)	450,000
Non-Qualified Defined Benefit Pension Plan | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, contributions by employer	0	6,500,000	0
Bear Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan, required employer contribution	$ 100,000		$ 200,000
Pension and Other Postretirement Benefit Contributions		$ 0		$ 0
Scenario, Forecast | Bear Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan, liabilities					$ 300,000

Segment Information (Income by

Segment Information (Income by Reportable Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Net sales	$ 157,489	$ 163,098	$ 318,056	$ 328,149
Operating income	18,756	20,582	42,856	40,752
Equity income in unconsolidated joint ventures	708	392	1,321	1,311
Other income (expense), net	191	(517)	(356)	(646)
Interest expense, net	(1,115)	(1,304)	(2,236)	(2,310)
Income before income tax expense	18,540	19,153	41,585	39,107
Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	67,222	66,408	140,598	137,695
Operating income	10,829	12,076	26,729	24,944
Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	45,767	47,016	92,084	91,572
Operating income	5,348	5,548	10,653	8,581
Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	38,363	38,539	73,614	77,068
Operating income	477	877	1,773	3,268
Other
Segment Reporting Information [Line Items]
Net sales	6,137	11,135	11,760	21,814
Operating income	$ 2,102	$ 2,081	$ 3,701	$ 3,959

Joint Ventures (Additional Info

Joint Ventures (Additional Information) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016USD ($)Entity	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)Entity	Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Schedule of Equity Method Investments [Line Items]
Number of joint ventures that are 50% owned (entity) | Entity	2		2
Equity income related to joint ventures	$ 708	$ 392	$ 1,321	$ 1,311
Due from joint ventures, current	$ 1,400		$ 1,400		$ 1,300
Rogers INOAC Corporation (RIC)
Schedule of Equity Method Investments [Line Items]
Ownership interest in joint venture (percent)	50.00%		50.00%
Rogers INOAC Suzhou Corporation (RIS)
Schedule of Equity Method Investments [Line Items]
Ownership interest in joint venture (percent)	50.00%		50.00%
Corporate Joint Venture
Schedule of Equity Method Investments [Line Items]
Due to related parties, current	$ 2,000		$ 2,000		$ 1,400

Joint Ventures (Accounted for U

Joint Ventures (Accounted for Under Equity Method of Accounting) (Details)	6 Months Ended
	Jun. 30, 2016
Schedule of Equity Method Investments [Line Items]
Fiscal Year-End	--12-31
Rogers INOAC Corporation (RIC) | Japan | High Performance Foams
Schedule of Equity Method Investments [Line Items]
Fiscal Year-End	--10-31
Rogers INOAC Suzhou Corporation (RIS) | China | High Performance Foams
Schedule of Equity Method Investments [Line Items]
Fiscal Year-End	--12-31

Joint Ventures (Summarized Info

Joint Ventures (Summarized Information for Joint Ventures) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Equity Method Investments and Joint Ventures [Abstract]
Net sales	$ 11,210	$ 9,708	$ 20,386	$ 20,613
Gross profit	3,435	1,865	6,597	4,927
Net income	$ 1,416	$ 784	$ 2,642	$ 2,622

Debt (Additional Information) (

Debt (Additional Information) (Details)	Jun. 18, 2015USD ($)	Jan. 22, 2015USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Mar. 31, 2015USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)	Jul. 13, 2011USD ($)
Debt Instrument [Line Items]
Maximum borrowing capacity									$ 265,000,000
Interest expense on outstanding debt			$ 900,000	$ 1,100,000		$ 1,800,000	$ 1,900,000
Unused commitment fee			100,000	100,000		200,000	100,000
Capitalized debt issuance costs, net			1,900,000			1,900,000
Amortization expense, debt issue costs			100,000	100,000		200,000	200,000
Repayment of debt principal						$ 1,516,000	5,131,000
Capital lease, expiration date						2,021
Capital lease obligation			5,800,000			$ 5,800,000
Amortization expense related to the capital lease			100,000	100,000		200,000	200,000
Capital lease accumulated depreciation			3,400,000			3,400,000		$ 3,300,000
Interest expense on capital lease			$ 100,000	$ 100,000		$ 200,000	200,000
Debt instrument, leverage ratio, maximum			2			2
Maximum
Debt Instrument [Line Items]
Dividends						$ 10,000,000
Credit Agreement
Debt Instrument [Line Items]
Variable rate lower range basis spread	37.50%
Variable rate higher range basis spread	75.00%
Line of credit, base reference rate description						The base reference rate is the greater of the prime rate; federal funds effective rate plus 50 basis points; or adjusted 1-month LIBOR plus 100 basis points.
Bank Term Loan
Debt Instrument [Line Items]
Revolving credit outstanding borrowings			$ 125,000,000			$ 125,000,000
Term loan debt			52,300,000			$ 52,300,000
Interest rate spread over variable rate (percent)						1.50%
Bank Term Loan | LIBOR
Debt Instrument [Line Items]
Interest rate spread over variable rate (percent)						0.50%
Amended Credit Facility
Debt Instrument [Line Items]
Credit agreement, agreement period (in years)	5 years
Maximum borrowing capacity	$ 350,000,000
Expansion option	$ 50,000,000
Leverage ratio	3.25
One-time leverage ratio maximum option	3.50
ICR covenant limit	3
Payments commencement date						Sep. 30, 2015
Repayment of debt principal						$ 1,400,000	$ 5,000,000
Required payment on debt obligation within the next 12 months						4,100,000
Amended Credit Facility | Minimum
Debt Instrument [Line Items]
Unused commitment fee percentage	0.20%
Amended Credit Facility | Maximum
Debt Instrument [Line Items]
Unused commitment fee percentage	0.30%
Amended Credit Facility | Federal Funds Effective Swap Rate
Debt Instrument [Line Items]
Variable rate lower range basis spread	0.50%
Amended Credit Facility | LIBOR
Debt Instrument [Line Items]
Variable rate higher range basis spread	1.00%
Amended Credit Facility | Bank Term Loan
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 55,000,000
Amended Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 295,000,000
Eurocurrency loans | Credit Agreement
Debt Instrument [Line Items]
Line of credit, LIBOR rate, minimum spread	137.50%
Line of credit, LIBOR rate, maximum spread	175.00%
Revolving Credit Facility | Arlon
Debt Instrument [Line Items]
Proceeds from line of credit		$ 125,000,000			$ 125,000,000
Standby Letters of Credit
Debt Instrument [Line Items]
Irrevocable standby letters of credit			1,200,000			1,200,000		1,200,000
Revolving credit outstanding borrowings			$ 0			$ 0		$ 0

Debt (Aggregate Payments) (Deta

Debt (Aggregate Payments) (Details) $ in Millions	Jun. 30, 2016USD ($)
Debt Disclosure [Abstract]
2,016	$ 2.1
2,017	4.1
2,018	4.8
2,019	5.5
2,020	$ 160.8

Goodwill and Intangible Asset61

Goodwill and Intangible Assets (Changes in Carrying Amount of Goodwill by Segment) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2016USD ($)
Goodwill [Roll Forward]
December 31, 2015	$ 175,453
Foreign currency translation adjustment	1,614
June 30, 2016	177,067
Advanced Connectivity Solutions
Goodwill [Roll Forward]
December 31, 2015	51,931
Foreign currency translation adjustment	309
June 30, 2016	52,240
Elastomeric Material Solutions
Goodwill [Roll Forward]
December 31, 2015	56,269
Foreign currency translation adjustment	0
June 30, 2016	56,269
Power Electronics Solutions
Goodwill [Roll Forward]
December 31, 2015	65,029
Foreign currency translation adjustment	1,305
June 30, 2016	66,334
Other
Goodwill [Roll Forward]
December 31, 2015	2,224
Foreign currency translation adjustment	0
June 30, 2016	$ 2,224

Goodwill and Intangible Asset62

Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 102,133	$ 101,158
Accumulated Amortization	36,209	30,442
Total intangible Assets, Gross Carrying Amount	106,522	105,461
Net Carrying Amount	65,924	70,716
Indefinite lived intangible assets	4,389	4,303
Total intangible assets, Net Carrying Amount	70,313	75,019
Trademarks and patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,557	2,543
Accumulated Amortization	910	718
Net Carrying Amount	1,647	1,825
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	48,300	47,724
Accumulated Amortization	22,544	19,681
Net Carrying Amount	25,756	28,043
Covenant-not-to-compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	962	943
Accumulated Amortization	962	943
Net Carrying Amount	0	0
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	50,314	49,948
Accumulated Amortization	11,793	9,100
Net Carrying Amount	$ 38,521	$ 40,848

Goodwill and Intangible Asset63

Goodwill and Intangible Assets (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 2.7	$ 2.8	$ 5.3	$ 5.2
Annual Future Amortization Expense
Anticipated future amortization expense for 2016	5.3		5.3
Anticipated future amortization expense for 2017	10.2		10.2
Anticipated future amortization expense for 2018	9.6		9.6
Anticipated future amortization expense for 2019	9.1		9.1
Anticipated future amortization expense for 2020	$ 5.6		$ 5.6

Goodwill and Intangible Asset64

Goodwill and Intangible Assets (Weighted Average Amortization Period by Intangible Asset Class) (Details)	6 Months Ended
	Jun. 30, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	5 years 2 months 12 days
Trademarks and patents
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	4 years
Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	4 years 4 months 24 days
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (Years)	5 years 9 months 18 days

Commitments and Contingencies65

Commitments and Contingencies (Details) $ in Millions	6 Months Ended
	Jun. 30, 2016USD ($)LegalMatterclaims	Dec. 31, 2015USD ($)claims
Loss Contingencies [Line Items]
Number of pending claims (legal matter) | claims	574	488
Claims settlements amount	$ 1.4
Asbestos Forecast Claim Period	10 years
Superfund Sites Proceedings
Loss Contingencies [Line Items]
Estimated total cleanup costs, accrual	$ 0.4
Number of pending claims (legal matter) | LegalMatter	1
Estimated total cleanup costs, cost sharing percentage (percent)	2.00%
PCB Contamination Proceedings
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	$ 0.2
Connecticut Voluntary Corrective Action Program
Loss Contingencies [Line Items]
Estimated total cleanup costs, accrual	3	$ 3.2
Minimum | Superfund Sites Proceedings
Loss Contingencies [Line Items]
Loss contingency, maximum possible loss	18.8
Maximum | Superfund Sites Proceedings
Loss Contingencies [Line Items]
Loss contingency, maximum possible loss	$ 29.6

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Loss Contingencies (Details) $ in Millions	6 Months Ended
	Jun. 30, 2016USD ($)claims
Liability for Asbestos and Environmental Claims [Roll Forward]
Claims outstanding at December 31, 2015	488
New claims filed	162
Pending claims concluded	(76)	[1]
Claims outstanding at June 30, 2016	574
Number of claims dismissed	68
Number of claims settled (claim)	8
Claims settlements amount | $	$ 1.4
[1]	For the six months ended June 30, 2016, 68 claims were dismissed and 8 claims were settled. Settlements totaled approximately $1.4 million for the six months ended June 30, 2016.

Commitments and Contingencies67

Commitments and Contingencies - Schedule of Total Estimated Liability for Asbestos (Details) $ in Millions	Jun. 30, 2016USD ($)
Commitments and Contingencies Disclosure [Abstract]
Asbestos-related claims	$ 56.6
Asbestos-related insurance receivables	$ 53.4

Share Repurchase (Details)

Share Repurchase (Details) - USD ($) shares in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Aug. 06, 2015
Equity [Abstract]
Authorized stock repurchase amount			$ 100,000,000
Remaining authorized stock repurchase amount	$ 56,000,000	$ 56,000,000
Shares of capital stock repurchased (in shares)	31,674	69,641
Value of capital stock repurchased	$ 1,999,000	$ 3,997,000

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Effective tax rate (percent)	71.00%	29.20%	51.20%	30.50%
Deferred tax liabilities, undistributed foreign earnings	$ 3.4		$ 3.4
Current foreign tax expense (benefit)			5.5
Unrecognized tax benefits, interest and penalties accrued	0.6		0.6
Unrecognized tax benefits	9.8		9.8
Unrecognized tax benefits that would decrease the effective tax rate if recognized	9.7		9.7
Unrecognized tax benefits that could be recognized within 12 months	$ 5.3		$ 5.3

Recent Accounting Pronounceme70

Recent Accounting Pronouncements (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Accounting Standards Update 2015-03 | Long-term Debt, Current Portion
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Debt issuance costs, net	$ 0.5	$ 0.5
Accounting Standards Update 2015-03 | Long-term Debt
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Debt issuance costs, net	1.4	1.6
Accounting Standards Update 2015-03 | Other Current Assets
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Debt issuance costs, net	(0.5)	(0.5)
Accounting Standards Update 2015-03 | Other Noncurrent Assets
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Debt issuance costs, net	(1.4)	$ (1.6)
Pro Forma | New Accounting Pronouncement, Early Adoption, Effect | Accounting Standards Update 2015-17
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Deferred tax assets, net, current	$ 9.6