10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

_______________________________

FORM 10-Q

_______________________________

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2019

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______________ to _______________

Commission file number 1-4347

_______________________________

ROGERS CORPORATION

(Exact Name of Registrant as Specified in its Charter)

_______________________________

Massachusetts	06-0513860
(State or Other Jurisdiction of	(I. R. S. Employer Identification No.)
Incorporation or Organization)

2225 W. Chandler Blvd., Chandler, Arizona 85224-6155

(Address of Principal Executive Offices) (Zip Code)

Registrant’s telephone number, including area code: (480) 917-6000

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)	Name of each exchange on which registered
Common Stock,	par value $1.00 per share	ROG	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý No o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ý No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company”, and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	ý	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐ No ý

The number of shares outstanding of the registrant’s capital stock as of July 26, 2019 was 18,559,612.

ROGERS CORPORATION

FORM 10-Q

June 30, 2019

TABLE OF CONTENTS
Part I – Financial Information
	Item 1.	Condensed Consolidated Financial Statements (Unaudited):
		Condensed Consolidated Statements of Operations	3
		Condensed Consolidated Statements of Comprehensive Income (Loss)	4
		Condensed Consolidated Statements of Financial Position	5
		Condensed Consolidated Statements of Cash Flows	6
		Condensed Consolidated Statements of Shareholders’ Equity	7
		Notes to Condensed Consolidated Financial Statements	8
	Item 2.	Management’s Discussion and Analysis of Results of Operations and Financial Position	26
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk	34
	Item 4.	Controls and Procedures	35
Part II – Other Information
	Item 1.	Legal Proceedings	36
	Item 6.	Exhibits	36
		Signatures	37

Forward-Looking Statements

This Quarterly Report on Form 10-Q contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Refer to “Forward-Looking Statements” in Item 2, Management’s Discussion and Analysis of Results of Operations and Financial Position for additional information.

2

Part I – Financial Information

Item 1. Financial Statements

ROGERS CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

(Dollars and shares in thousands, except per share amounts)

	Three Months Ended						Six Months Ended
	June 30, 2019			June 30, 2018			June 30, 2019			June 30, 2018
Net sales	$	242,852		$	214,675		$	482,650		$	429,286
Cost of sales	157,024			138,003			311,428			276,007
Gross margin	85,828			76,672			171,222			153,279
Selling, general and administrative expenses	43,649			42,540			86,901			83,137
Research and development expenses	7,843			8,750			15,452			16,884
Restructuring and impairment charges	1,083			541			1,905			963
Other operating (income) expense, net	40			(383		)	951			(3,974		)
Operating income	33,213			25,224			66,013			56,269
Equity income in unconsolidated joint ventures	1,742			1,804			2,579			2,811
Other income (expense), net	(1,401		)	(34		)	3			32
Interest expense, net	(2,038		)	(1,292		)	(3,976		)	(2,503		)
Income before income tax expense	31,516			25,702			64,619			56,609
Income tax expense	7,223			8,373			11,927			13,144
Net income	$	24,293		$	17,329		$	52,692		$	43,465
Basic earnings per share	$	1.31		$	0.94		$	2.84		$	2.37
Diluted earnings per share	$	1.30		$	0.93		$	2.82		$	2.33
Shares used in computing:
Basic earnings per share	18,568			18,389			18,562			18,338
Diluted earnings per share	18,730			18,660			18,711			18,635

The accompanying notes are an integral part of the condensed consolidated financial statements.

3

ROGERS CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(Unaudited)

(Dollars in thousands)

	Three Months Ended						Six Months Ended
	June 30, 2019			June 30, 2018			June 30, 2019			June 30, 2018
Net income	$	24,293		$	17,329		$	52,692		$	43,465
Foreign currency translation adjustment	2,182			(15,294		)	(2,075		)	(8,293		)
Derivative instrument designated as cash flow hedge:
Change in unrealized gain (loss) before reclassifications, net of tax (Note 4)	(810		)	349			(1,204		)	1,153
Unrealized (gain) loss reclassified into earnings, net of tax (Note 4)	(62		)	(29		)	(156		)	(56		)
Pension and other postretirement benefits:
Amortization of loss, net of tax (Note 4)	157			44			313			87
Other comprehensive income (loss)	1,467			(14,930		)	(3,122		)	(7,109		)
Comprehensive income	$	25,760		$	2,399		$	49,570		$	36,356

The accompanying notes are an integral part of the condensed consolidated financial statements.

4

ROGERS CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION

(Unaudited)

(Dollars and shares in thousands, except par value)

	June 30, 2019			December 31, 2018
Assets
Current assets
Cash and cash equivalents	$	173,068		$	167,738
Accounts receivable, less allowance for doubtful accounts of $1,215 and $1,354	156,924			144,623
Contract assets	25,573			22,728
Inventories	135,067			132,637
Prepaid income taxes	4,275			3,093
Asbestos-related insurance receivables, current portion	4,138			4,138
Other current assets	10,814			10,829
Total current assets	509,859			485,786
Property, plant and equipment, net of accumulated depreciation of $331,553 and $317,414	248,309			242,759
Investments in unconsolidated joint ventures	17,534			18,667
Deferred income taxes	11,080			8,236
Goodwill	263,804			264,885
Other intangible assets, net of amortization	167,985			177,008
Pension assets	19,918			19,273
Asbestos-related insurance receivables, non-current portion	60,247			59,685
Other long-term assets	8,617			3,045
Total assets	$	1,307,353		$	1,279,344
Liabilities and Shareholders’ Equity
Current liabilities
Accounts payable	$	42,214		$	40,321
Accrued employee benefits and compensation	31,798			30,491
Accrued income taxes payable	9,048			7,032
Asbestos-related liabilities, current portion	5,547			5,547
Other accrued liabilities	24,085			23,789
Total current liabilities	112,692			107,180
Borrowings under revolving credit facility	195,482			228,482
Pension and other postretirement benefits liabilities	1,739			1,739
Asbestos-related liabilities, non-current portion	65,226			64,799
Non-current income tax	8,554			8,418
Deferred income taxes	10,768			10,806
Other long-term liabilities	15,378			9,596
Commitments and contingencies (Note 13)
Shareholders’ equity
Capital stock - $1 par value; 50,000 authorized shares; 18,559 and 18,395 shares issued and outstanding	18,559			18,395
Additional paid-in capital	131,836			132,360
Retained earnings	829,075			776,403
Accumulated other comprehensive loss	(81,956		)	(78,834		)
Total shareholders' equity	897,514			848,324
Total liabilities and shareholders' equity	$	1,307,353		$	1,279,344

The accompanying notes are an integral part of the condensed consolidated financial statements.

5

ROGERS CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(Dollars and shares in thousands)

	Six Months Ended
	June 30, 2019			June 30, 2018
Operating Activities:
Net income	$	52,692		$	43,465
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	25,099			22,084
Equity compensation expense	6,143			5,814
Deferred income taxes	(2,536		)	3,879
Equity in undistributed income of unconsolidated joint ventures	(2,579		)	(2,811		)
Dividends received from unconsolidated joint ventures	1,741			1,809
Pension and other postretirement benefits	(346		)	(796		)
Asbestos-related charges	67			—
Loss (gain) on sale or disposal of property, plant and equipment	276			(383		)
Impairment charges	956			—
Benefit for doubtful accounts	(128		)	(190		)
Changes in assets and liabilities:
Accounts receivable	(12,747		)	(9,446		)
Contract assets	(2,845		)	(21,933		)
Inventories	(2,845		)	(6,489		)
Pension and postretirement benefit contributions	(11		)	(338		)
Other current assets	(1,211		)	(1,299		)
Accounts payable and other accrued expenses	3,653			(13,835		)
Other, net	2,122			3,287
Net cash provided by operating activities	67,501			22,818
Investing Activities:
Capital expenditures	(24,026		)	(20,177		)
Proceeds from the sale of property, plant and equipment, net	9			1,027
Return of capital from unconsolidated joint ventures	2,625			—
Net cash used in investing activities	(21,392		)	(19,150		)
Financing Activities:
Repayment of debt principal and finance lease obligations	(33,196		)	(291		)
Payments of taxes related to net share settlement of equity awards	(7,424		)	(6,427		)
Proceeds from the exercise of stock options, net	327			698
Proceeds from issuance of shares to employee stock purchase plan	594			558
Share repurchases	—			(2,999		)
Net cash used in financing activities	(39,699		)	(8,461		)
Effect of exchange rate fluctuations on cash	(1,080		)	(1,666		)
Net increase (decrease) in cash and cash equivalents	5,330			(6,459		)
Cash and cash equivalents at beginning of period	167,738			181,159
Cash and cash equivalents at end of period	$	173,068		$	174,700
Supplemental Disclosures:
Accrued capital additions	$	2,119		$	1,881
Cash paid during the year for:
Interest, net of amounts capitalized	$	4,440		$	2,631
Income taxes	$	9,164		$	14,040

The accompanying notes are an integral part of the condensed consolidated financial statements.

6

ROGERS CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(Unaudited)

(Dollars in thousands)

	Three Months Ended						Six Months Ended
	June 30, 2019			June 30, 2018			June 30, 2019			June 30, 2018
Capital Stock
Balance, beginning of period	$	18,546		$	18,365		$	18,395		$	18,255
Shares issued for vested restricted stock units, net of cancellations for tax withholding	4			—			137			113
Stock options exercised	2			7			10			18
Shares issued for employee stock purchase plan	—			—			7			6
Shares issued to directors	7			8			10			11
Shares repurchased	—			—			—			(23		)
Balance, end of period	18,559			18,380			18,559			18,380
Additional Paid-In Capital
Balance, beginning of period	128,417			123,104			132,360			128,933
Shares issued for vested restricted stock units, net of cancellations for tax withholding	(288		)	(20		)	(7,561		)	(6,540		)
Stock options exercised	40			218			317			680
Shares issued for employee stock purchase plan	7			17			587			552
Shares issued to directors	(7		)	(8		)	(10		)	(11		)
Equity compensation expense	3,667			3,141			6,143			5,814
Shares repurchased	—			—			—			(2,976		)
Balance, end of period	131,836			126,452			131,836			126,452
Retained Earnings
Balance, beginning of period	804,782			714,888			776,403			684,540
Net income	24,293			17,329			52,692			43,465
Cumulative-effect adjustment for lease accounting	—			—			(20		)	—
Cumulative-effect adjustment of revenue recognition	—			—			—			4,212
Balance, end of period	829,075			732,217			829,075			732,217
Accumulated Other Comprehensive Loss
Balance, beginning of period	(83,423		)	(57,334		)	(78,834		)	(65,155		)
Other comprehensive income (loss)	1,467			(14,930		)	(3,122		)	(7,109		)
Balance, end of period	(81,956		)	(72,264		)	(81,956		)	(72,264		)
Total Shareholders’ Equity	$	897,514		$	804,785		$	897,514		$	804,785

The accompanying notes are an integral part of the condensed consolidated financial statements.

7

ROGERS CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1 – 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.

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 year ended December 31, 2018.

Note 2 – 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, including foreign currency contracts, copper derivative contracts and interest rate swaps. Derivative instruments measured at fair value on a recurring basis, categorized by the level of inputs used in the valuation, include:

	Derivative Instruments at Fair Value as of June 30, 2019
(Dollars in thousands)	Level 1		Level 2			Level 3		Total
Foreign currency contracts	$	—	$	(184	)	$	—	$	(184	)
Copper derivative contracts	$	—	$	762		$	—	$	762
Interest rate swap	$	—	$	(1,284	)	$	—	$	(1,284	)

	Derivative Instruments at Fair Value as of December 31, 2018
(Dollars in thousands)	Level 1		Level 2		Level 3		Total
Foreign currency contracts	$	—	$	522	$	—	$	522
Copper derivative contracts	$	—	$	583	$	—	$	583
Interest rate swap	$	—	$	461	$	—	$	461

For further discussion on our derivative contracts, refer to “Note 3 – Hedging Transactions and Derivative Financial Instruments.”

Note 3 – Hedging Transactions and Derivative Financial Instruments

We are exposed to certain risks related to our ongoing business operations. The primary risks being managed through our use of derivative instruments are foreign currency exchange rate risk and commodity pricing risk (primarily related to copper). During 2017, we entered into an interest rate swap to hedge interest rate risk. 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.

8

• Commodity - The fair value of copper derivatives is computed using a combination of intrinsic and time value valuation models, which are collectively a function of five primary variables: price of the underlying instrument, time to expiration, strike price, interest rate and volatility. 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 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.

• Interest Rates - The fair value of interest rate swap instruments is derived by comparing the present value of the interest rate forward curve against the present value of the swap rate, relative to the notional amount of the swap. The net value represents the estimated amount we would receive or pay to terminate the agreements. Settlement amounts for an “in the money” swap would be adjusted down to compensate the counterparty for cost of funds, and the adjustment is directly related to the counterparties’ credit ratings.

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 as cash flow hedges (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. As of June 30, 2019 and 2018, only our interest rate swap qualified for hedge accounting treatment as a cash flow hedge, and the hedge was highly effective.

Foreign Currency

During the three months ended June 30, 2019, we entered into Chinese Renminbi, Korean Won and Euro forward contracts. We entered into these foreign currency forward contracts to mitigate certain global transactional exposures. These contracts do not qualify for hedge accounting treatment. As a result, any fair value adjustments required on these contracts are recorded in “Other income (expense), net” in our condensed consolidated statements of operations in the period in which the adjustment occurred.

As of June 30, 2019, the notional values of the remaining foreign currency forward contracts were:

Notional Values of Foreign Currency Derivatives
USD/CNY	$	33,351,869
KRW/USD	₩	4,620,000,000
EUR/USD	€	8,750,874

Commodity

As of June 30, 2019, we had 26 outstanding contracts to hedge exposure related to the purchase of copper in our Power Electronics Solutions (PES) and Advanced Connectivity Solutions (ACS) operating segments. These contracts are held with financial institutions and are intended to offset rising copper prices and do not qualify for hedge accounting treatment. As a result, any fair value adjustments required on these contracts are recorded in “Other income (expense), net” in our condensed consolidated statements of operations in the period in which the adjustment occurred. As of June 30, 2019, the volume of our copper contracts outstanding was as follows:

Volume of Copper Derivatives
July 2019 - September 2019	191 metric tons per month
October 2019 - December 2019	195 metric tons per month
January 2020 - March 2020	202 metric tons per month
April 2020 - June 2020	202 metric tons per month
July 2020 - September 2020	201 metric tons per month

Interest Rates

In March 2017, we entered into an interest rate swap to hedge the variable interest rate on $75.0 million of our $450.0 million revolving credit facility. This transaction has been designated as a cash flow hedge and qualifies for hedge accounting treatment. For additional information regarding our revolving credit facility, refer to “Note 10 – Debt.”

9

Effects on Financial Statements

(Dollars in thousands)		The Effect of Current Derivative Instruments on the Financial Statements for the Period Ended June 30, 2019						Fair Values of Derivative Instruments as of June 30, 2019
		Gain (Loss)						Other Assets/ (Other Liabilities)(1)
	Location	Three Months Ended			Six Months Ended
Foreign Currency Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	125		$	(586	)	$	(184	)
Copper Derivative Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	(775	)	$	(465	)	$	762
Interest Rate Swap
Contract designated as hedging instrument	Other comprehensive income (loss)	$	(1,113	)	$	(1,745	)	$	(1,284	)

(Dollars in thousands)		The Effect of Current Derivative Instruments on the Financial Statements for the Period Ended June 30, 2018						Fair Values of Derivative Instruments as of June 30, 2018
		Gain (Loss)						Other Assets/(Other Liabilities)(1)
	Location	Three Months Ended			Six Months Ended
Foreign Currency Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	(60	)	$	(124	)	$	118
Copper Derivative Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	(363	)	$	(1,185	)	$	827
Interest Rate Swap
Contract designated as hedging instrument	Other comprehensive income (loss)	$	410		$	1,399		$	1,439

⁽¹⁾ All balances were recorded in the “Other current assets” or “Other accrued liabilities” line items in the consolidated statements of financial position, except the 2019 interest rate swap balance, which was recorded in the “Other long-term liabilities” line item in the condensed consolidated statements of financial position.

10

Note 4 – Accumulated Other Comprehensive Loss

The changes in accumulated other comprehensive loss by component for the six months ended June 30, 2019 and 2018 were as follows:

(Dollars and accompanying footnotes in thousands)	Foreign Currency Translation Adjustments			Pension and Other Postretirement Benefits(1)			Derivative Instrument Designated as Cash Flow Hedge(2)			Total
Balance as of December 31, 2018	$	(30,488	)	$	(48,700	)	$	354		$	(78,834	)
Other comprehensive income (loss) before reclassifications	(2,075		)	—			(1,204		)	(3,279		)
Amounts reclassified from accumulated other comprehensive loss	—			313			(156		)	157
Net current-period other comprehensive income (loss)	(2,075		)	313			(1,360		)	(3,122		)
Balance as of June 30, 2019	$	(32,563	)	$	(48,387	)	$	(1,006	)	$	(81,956	)
Balance as of December 31, 2017	$	(17,983	)	$	(47,198	)	$	26		$	(65,155	)
Other comprehensive income (loss) before reclassifications	(8,293		)	—			1,153			(7,140		)
Amounts reclassified from accumulated other comprehensive loss	—			87			(56		)	31
Net current-period other comprehensive income (loss)	(8,293		)	87			1,097			(7,109		)
Balance as of June 30, 2018	$	(26,276	)	$	(47,111	)	$	1,123		$	(72,264	)

⁽¹⁾ Net of tax benefits of $9,893 and $9,984 as of June 30, 2019 and December 31, 2018, respectively. Net of tax benefits of $9,536 and $9,563 as of June 30, 2018 and December 31, 2017, respectively.

⁽²⁾ Net of tax benefits (expenses) of $278 and ($106) as of June 30, 2019 and December 31, 2018, respectively. Net of tax benefits (expenses) of ($316) and ($15) as of June 30, 2018 and December 31, 2017, respectively.

Note 5 – Acquisitions

Griswold LLC

On July 6, 2018, we acquired 100% of the membership interests in Griswold LLC (Griswold) for an aggregate purchase price of $78.0 million, net of cash acquired.

Pro Forma Financial Information

The following unaudited pro forma financial information presents the combined results of operations of Rogers and Griswold as if the Griswold acquisition had occurred on January 1, 2017. The unaudited pro forma financial information is not intended to represent or be indicative of our consolidated results of operations that would have been reported had the Griswold acquisition been completed as of January 1, 2017, and should not be taken as indicative of our future consolidated results of operations.

	Three Months Ended		Six Months Ended
(Dollars in thousands)	June 30, 2018		June 30, 2018
Net sales	$	222,350	$	444,073
Net income	16,554		42,436

Note 6 – Inventories

Inventories are valued at the lower of cost or net realizable value. Inventories consisted of the following:

(Dollars in thousands)	June 30, 2019		December 31, 2018
Raw materials	$	63,931	$	59,321
Work-in-process	31,646		30,086
Finished goods	39,490		43,230
Total inventories	$	135,067	$	132,637

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Note 7 – Goodwill and Other Intangible Assets

Goodwill

The changes in the carrying amount of goodwill from December 31, 2018 to June 30, 2019 by operating segment, were as follows:

(Dollars in thousands)	Advanced Connectivity Solutions		Elastomeric Material Solutions			Power Electronics Solutions			Other		Total
December 31, 2018	$	51,693	$	142,589		$	68,379		$	2,224	$	264,885
Foreign currency translation adjustment	—		(538		)	(543		)	—		(1,081		)
June 30, 2019	$	51,693	$	142,051		$	67,836		$	2,224	$	263,804

Other Intangible Assets

The gross carrying amount, accumulated amortization and net carrying amount of other intangible assets as of June 30, 2019 and December 31, 2018 by classification type, were as follows:

	June 30, 2019						December 31, 2018
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	$	149,496	$	34,508	$	114,988	$	149,753	$	30,078	$	119,675
Technology	81,273		41,943		39,330		81,535		38,624		42,911
Trademarks and trade names	11,995		3,779		8,216		12,019		3,213		8,806
Covenants not to compete	1,340		377		963		1,340		249		1,091
Total definite-lived other intangible assets	244,104		80,607		163,497		244,647		72,164		172,483
Indefinite-lived other intangible asset	4,488		—		4,488		4,525		—		4,525
Total other intangible assets	$	248,592	$	80,607	$	167,985	$	249,172	$	72,164	$	177,008

In the table above, gross 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, 2019 was approximately $4.4 million and $8.9 million, respectively. Amortization expense for the three and six months ended June 30, 2018 was approximately $3.8 million and $7.7 million, respectively. The estimated future amortization expense is $8.9 million for the remainder of 2019 and $14.6 million, $13.8 million, $13.3 million and $12.7 million for 2020, 2021, 2022 and 2023, respectively.

The weighted average amortization period as of June 30, 2019, by definite-lived other intangible asset class, is presented in the table below:

Definite-Lived Other Intangible Asset Class	Weighted Average Remaining Amortization Period
Customer relationships	7.4 years
Technology	4.2 years
Trademarks and trade names	4.9 years
Covenants not to compete	1.8 years
Total definite-lived other intangible assets	6.5 years

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Note 8 – Earnings Per Share

Basic earnings per share is based on the weighted average number of common shares outstanding. Diluted earnings per share is based on the weighted average number of common shares outstanding and all dilutive potential common shares outstanding.

The following table sets forth the computation of basic and diluted earnings per share for the periods indicated:

(In thousands, except per share amounts)	Three Months Ended				Six Months Ended
	June 30, 2019		June 30, 2018		June 30, 2019		June 30, 2018
Numerator:
Net income	$	24,293	$	17,329	$	52,692	$	43,465
Denominator:
Weighted-average shares outstanding - basic	18,568		18,389		18,562		18,338
Effect of dilutive shares	162		271		149		297
Weighted-average shares outstanding - diluted	18,730		18,660		18,711		18,635
Basic earnings per share	$	1.31	$	0.94	$	2.84	$	2.37
Diluted earnings per share	$	1.30	$	0.93	$	2.82	$	2.33

Dilutive shares are calculated using the treasury stock method and primarily include unvested restricted stock units. Anti-dilutive shares are excluded from the calculation of diluted shares and diluted earnings per share. For the three months ended June 30, 2019 and 2018, 6,256 shares and 27,145 shares were excluded, respectively.

Note 9 – Capital Stock and Equity Compensation

Equity Compensation

Performance-Based Restricted Stock Units

As of June 30, 2019, we had performance-based restricted stock units from 2019, 2018 and 2017 outstanding. These awards generally cliff vest at the end of a three year measurement period. However, 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 measurement period. Participants are eligible to be awarded shares ranging from 0% to 200% of the original award amount, based on certain defined performance measures.

The outstanding awards have one measurement criterion: the three year total shareholder return (TSR) on our capital stock as compared to that of a specified group of peer companies. The TSR measurement criterion of the awards is considered a market condition. As such, the fair value of this measurement criterion was determined on the grant date using a Monte Carlo simulation valuation model. We recognize compensation expense on all of these awards on a straight-line basis over the vesting period with no changes for final projected payout of the awards. We account for forfeitures as they occur.

Below are the assumptions used in the Monte Carlo calculation on the respective grant dates for awards granted in 2019 and 2018:

	June 3, 2019	February 7, 2019	September 17, 2018	February 8, 2018
Expected volatility	39.7%	36.7%	36.6%	34.8%
Expected term (in years)	2.6	2.9	3.0	3.0
Risk-free interest rate	1.78%	2.43%	2.85%	2.28%

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.

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The following table summarizes the change in number of performance-based restricted stock units outstanding for the six months ended June 30, 2019:

	Performance-Based Restricted Stock Units
Awards outstanding as of December 31, 2018	142,434
Awards granted	111,087
Stock issued	(131,650	)
Awards forfeited	(11,549	)
Awards outstanding as of June 30, 2019	110,322

We recognized $1.1 million and $2.0 million of compensation expense for performance-based restricted stock units during the three and six months ended June 30, 2019, respectively. We recognized $0.8 million and $1.8 million of compensation expense for performance-based restricted stock units during the three and six months ended June 30, 2018, respectively.

Time-Based Restricted Stock Units

As of June 30, 2019, we had time-based restricted stock unit awards from 2019, 2018, 2017 and 2016 outstanding. The outstanding awards all ratably vest on the first, second and third anniversaries of the original grant date. However, 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 subsequent to the last grant anniversary date. Each time-based restricted stock unit represents a right to receive one share of Rogers’ capital stock at the end of the vesting period. The fair value of the award is determined by the market value of the underlying stock price at the grant date. We recognize compensation expense on all of these awards on a straight-line basis over the vesting period. We account for forfeitures as they occur.

A summary of activity of the outstanding time-based restricted stock units for the six months ended June 30, 2019 is presented below:

	Time-Based Restricted Stock Units
Awards outstanding as of December 31, 2018	117,476
Awards granted	59,561
Stock issued	(64,536	)
Awards forfeited	(7,596	)
Awards outstanding as of June 30, 2019	104,905

We recognized $1.4 million and $2.9 million of compensation expense for time-based restricted stock units during the three and six months ended June 30, 2019, respectively. We recognized $1.3 million and $2.9 million of compensation expense for time-based restricted stock units during the three and six months ended June 30, 2018, 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’ capital 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 by the market value of the underlying stock price at the grant date.

The following table summarizes the change in number of deferred stock units outstanding during the six months ended June 30, 2019:

	Deferred Stock Units
Awards outstanding as of December 31, 2018	8,400
Awards granted	5,950
Stock issued	(7,200	)
Awards outstanding as of June 30, 2019	7,150

We recognized $1.1 million of compensation expense related to deferred stock units for the three and six months ended June 30, 2019, and $0.9 million of compensation expense for the three and six months ended June 30, 2018.

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Stock Options

Stock options have been granted under various equity compensation plans. The maximum contractual term for all options is normally 10 years. All outstanding options are fully vested and exercisable. We have not granted any stock options since the first quarter of 2012.

During the six months ended June 30, 2019, 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 $1.1 million, and the total amount of cash received from the exercise of these options was $0.3 million.

A summary of the activity under our stock option plans for the six months ended June 30, 2019 is presented below:

	Options Outstanding		Weighted- Average Exercise Price Per Share		Weighted-Average Remaining Contractual Life in Years	Aggregate Intrinsic Value
Options outstanding, vested and exercisable as of December 31, 2018	10,950		$	31.99	2.0	$	734,469
Options exercised	(10,000	)	$	32.74
Options expired	(300	)	$	23.86
Options outstanding, vested and exercisable as of June 30, 2019	650		$	24.20	0.6	$	96,447

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 shares of our capital 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 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 an immaterial amount of equity compensation expense associated with the ESPP for each of the three- and six-month periods ended June 30, 2019 and 2018.

Note 10 – Debt

In 2017, we entered into a secured five year credit agreement with JPMorgan Chase Bank, N.A., as administrative agent, and the lenders party thereto (the Third Amended Credit Agreement), which increased the principal amount of our revolving credit facility to up to $450.0 million borrowing capacity, with sublimits for multicurrency borrowings, letters of credit and swing-line notes, and provided an additional $175.0 million accordion 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 Third Amended Credit Agreement).

In 2018, we borrowed $82.5 million under our revolving credit facility to fund the acquisition of Griswold and an additional $20.0 million to fund the Rogers Corporation Defined Benefit Pension Plan (Merged Plan) as part of the proposed plan termination process.

Borrowings under the Third Amended Credit Agreement can be made as alternate base rate loans or euro-currency loans. Alternate base rate loans bear interest at 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 (or the overnight bank funding rate, if greater) plus 50 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. Based on our leverage ratio as of June 30, 2019, the spread was 150.0 basis points.

We incurred interest expense on our outstanding debt of $2.1 million, and $1.1 million during the three months ended June 30, 2019 and 2018, respectively, and $4.2 million and $2.0 million during the six months ended June 30, 2019 and 2018, respectively.

In addition to interest payable on the principal amount of indebtedness outstanding from time to time under the Third Amended Credit Agreement, we are required to pay a quarterly fee of 20 to 30 basis points (based upon our leverage ratio) of the unused amount of the lenders’ commitments under the Third Amended Credit Agreement. We incurred immaterial unused commitment fees in each of the three- and six-month periods ended June 30, 2019 and 2018.

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The Third Amended Credit Agreement contains customary representations, warranties, covenants, mandatory prepayments and events of default under which our payment obligations may be accelerated. 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. The financial covenants include requirements to maintain (1) a leverage ratio of no more than 3.25 to 1.00, subject to an 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 of no less than 3.00 to 1.00.

All obligations under the Third Amended Credit Agreement are guaranteed by each of our existing and future material domestic subsidiaries, as defined in the Third Amended Credit Agreement (the Guarantors). The obligations are also secured by a Third Amended and Restated Pledge and Security Agreement, dated as of February 17, 2017, entered into by us and the Guarantors which 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 Guarantors. These assets include, but are not limited to, receivables, equipment, intellectual property, inventory, and stock in certain subsidiaries.

All revolving loans are due on the maturity date, February 17, 2022. We are not required to make any quarterly principal payments under the Third Amended Credit Agreement, and as of June 30, 2019 we had $195.5 million in outstanding borrowings under our revolving credit facility. However, we made discretionary principal payments totaling $33.0 million on our revolving credit facility during the six months ended June 30, 2019.

As of June 30, 2019, we had $1.4 million of outstanding line of credit issuance costs that will be amortized over the life of the Third Amended Credit Agreement. We recognized an immaterial amount of amortization expense for each of the three- and six-month periods ended June 30, 2019 and 2018, related to these deferred costs.

In March 2017, we entered into an interest rate swap to hedge the variable interest rate on $75.0 million of our $450.0 million revolving credit facility. For further information regarding the interest rate swap, refer to “Note 3 – Hedging Transactions and Derivative Financial Instruments.”

Restriction on Payment of Dividends

Our Third 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 2.75 to 1.00. If our leverage ratio exceeds 2.75 to 1.00, we may nonetheless make up to $20.0 million in restricted payments, including cash dividends, during the fiscal year, provided that no default or event of default has occurred and is continuing or would result from the payments. Our leverage ratio did not exceed 2.75 to 1.00 as of June 30, 2019.

Note 11 - Leases

We have a finance lease obligation related to our manufacturing facility in Eschenbach, Germany. Under the terms of the lease 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. Our finance lease obligation related to this facility was $4.8 million and $5.0 million as of June 30, 2019 and December 31, 2018, respectively. The finance lease right-of-use asset balance for this facility was $6.5 million and $6.7 million as of June 30, 2019 and December 31, 2018, respectively. All other finance lease obligations and finance lease right-of-use assets were cumulatively immaterial as of June 30, 2019 and December 31, 2018. Accumulated amortization related to our finance lease right-of-use assets was $3.7 million and $3.5 million as of June 30, 2019 and December 31, 2018, respectively.

Amortization expense related to our finance lease right-of-use assets, which is primarily included in the “Cost of sales” line item of the condensed consolidated statements of operations, was immaterial for each of the three- and six-month periods ended June 30, 2019 and 2018. Interest expense related to our finance lease obligations, which is included in the “Interest expense, net” line item of the condensed consolidated statements of operations, was immaterial for each of the three- and six-month periods ended June 30, 2019 and 2018. Payments made on the principal portion of our finance lease obligations were immaterial for each of the three-and six-month periods ended June 30, 2019 and 2018.

We have operating leases primarily related to building space and vehicles. Renewal options are included in the lease term to the extent we are reasonably certain to exercise the option. The exercise of lease renewal options is at our sole discretion. We account for lease components separately from non-lease components. The incremental borrowing rate represents our ability to borrow on a collateralized basis over a similar lease term.

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The following table includes our expenses and payments for operating leases for the three and six months ended June 30, 2019:

(Dollars in thousands)	Three Months Ended	Six Months Ended
	June 30, 2019	June 30, 2019
Operating leases expense	775	1,493
Short-term leases expense	43	82
Payments on operating lease obligations	760	1,524

As of June 30, 2019 and December 31, 2018, our assets and liabilities balances related to finance and operating leases were as follows:

(Dollars in thousands)	Location in Statements of Financial Position	June 30, 2019		December 31, 2018
Finance lease right-of-use assets	Property, plant and equipment, net	$	6,529	$	6,750
Operating lease right-of-use assets	Other long-term assets	$	6,285	$	—
Finance lease obligations, current portion	Other accrued liabilities	$	420	$	420
Finance lease obligations, non-current portion	Other long-term liabilities	$	4,394	$	4,629
Total finance lease obligations		$	4,814	$	5,049
Operating lease obligations, current portion	Other accrued liabilities	$	2,594	$	—
Operating lease obligations, non-current portion	Other long-term liabilities	$	3,710	$	—
Total operating lease obligations		$	6,304	$	—

Net Future Minimum Lease Payments

The following table includes future minimum lease payments under finance and operating leases together with the present value of the net future minimum lease payments as of June 30, 2019:

(Dollars in thousands)	Finance			Operating
	Leases			Leases Signed			Less: Leases Not Yet Commenced		Leases
2019	$	278		$	1,478		$	—	$	1,478
2020	521			2,713			—		2,713
2021	4,238			1,589			—		1,589
2022	—			822			—		822
2023	—			229			—		229
Thereafter	—			30			—		30
Total Lease Payments	5,037			6,861			—		6,861
Less: Interest	(223		)	(557		)	—		(557		)
Present Value of Net Future Minimum Lease Payments	$	4,814		$	6,304		$	—	$	6,304

The following table includes information regarding the lease term and discount rates utilized in the calculation of the present value of net future minimum lease payments:

	Finance Leases	Operating Leases
Weighted Average Remaining Lease Term	2.0 years	2.7 years
Weighted Average Discount Rate	2.55%	6.09%

Transition

We adopted Accounting Standards Codification (ASC) 842, Leases, in the first quarter of 2019 using the optional transition method, which applies the new lease requirements through a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption without restatement of comparative periods. The guidance was applied to all leases that were not completed at the date of implementation. The adoption primarily affected our condensed consolidated statements of financial position through the recognition of $6.2 million of operating lease right-of-use assets and $6.2 million of operating lease obligations, as well as an immaterial impact to retained earnings, as of January 1, 2019. We recognized an additional $0.1 million of operating lease right-

17

of-use assets and $0.1 million operating lease obligations during the three months ended June 30, 2019. We recognized an additional $0.8 million of operating lease right-of-use assets and $0.8 million operating lease obligations during the six months ended June 30, 2019. The total operating lease right-of use assets and operating lease obligations recognized was $7.0 million and $7.0 million, respectively.

Practical Expedients

We have elected to recognize lease payments in the condensed consolidated statements of operations on a straight-line basis over the term of the lease for short-term leases. We also elected the package of practical expedients that allows us to carry forward the historical lease classification and accounting for indirect costs for any existing leases.

Note 12 – Pension Benefits and Other Postretirement Benefit Plans

As of June 30, 2019, we had two qualified noncontributory defined benefit pension plans: 1) the Rogers Corporation Employees’ Pension Plan (the Union Plan) and 2) the Rogers Corporation Defined Benefit Pension Plan for (i) all other U.S. employees hired before December 31, 2007 who are salaried employees or non-union hourly employees and (ii) employees of the acquired Arlon business (the Merged Plan).

The Company also maintains the Rogers Corporation Amended and Restated Pension Restoration Plan effective as of January 1, 2004 and the Rogers Corporation Amended and Restated Pension Restoration Plan effective as of January 1, 2005 (collectively, the Nonqualified Plans). The Nonqualified Plans serve to restore certain retirement benefits that might otherwise be lost due to limitations imposed by federal law on qualified pension plans, as well as to provide supplemental retirement benefits, for certain senior executives of the Company. In addition, we sponsor multiple fully insured or self-funded medical plans and life insurance plans for certain retirees. The measurement date for all plans is December 31^st for each respective plan year.

We are required, as an employer, to: (a) recognize in our consolidated statements of financial position an asset for a plan’s overfunded status or a liability for a plan’s underfunded status; (b) measure a plan’s assets and our obligations that determine our funded status as of the end of the year; and (c) recognize changes in the funded status of a defined benefit postretirement plan in the year in which the changes occur and report these changes in accumulated other comprehensive loss. In addition, actuarial gains and losses that are not immediately recognized as net periodic pension cost are recognized as a component of accumulated other comprehensive loss and amortized into net periodic pension cost in future periods.

Pension Plan Proposed Termination

The Company currently intends to terminate the Merged Plan and has received a determination letter from the Internal Revenue Service (IRS). On June 10, 2019, the Company amended the Plan to (a) terminate the Plan (subject to discretionary approval by the Company’s Chief Executive Officer) and (b) add a lump sum distribution option in connection with the termination of the Plan, if approved. The Company plans to provide participants an option to elect either a lump sum distribution or an annuity. One or more group annuity contracts with one or more insurance companies will be purchased to settle our obligations for those participants who do not receive a lump sum. The Merged Plan is fully-funded on a GAAP basis, however, in order to terminate the plan in accordance with IRS and Pension Benefit Guaranty Corporation requirements, the Company will be required to contribute additional assets, if necessary, to settle all of the Merged Plan’s obligations. The amount necessary to do so is not yet known. In addition, the Company expects to record a pension settlement charge at plan termination. This settlement charge will include, as a non-cash charge, the immediate recognition into expense of the unrecognized losses within accumulated other comprehensive loss on the statement of financial position as of the plan termination date. The Company does not have a current estimate of these future charges, however, the pre-tax accumulated other comprehensive loss related to the Merged Plan was approximately $47 million as of June 30, 2019. We currently estimate that if the plan termination is approved by the Chief Executive Officer, it will be completed during the second half of 2019, when lump sum distributions are expected to occur and one or more annuity contracts are expected to be purchased. At this time, there are no plans to terminate the Union Plan.

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Components of Net Periodic (Benefit) Cost

The components of net periodic (benefit) cost for the periods indicated were:

	Pension Benefits												Retirement Health and Life Insurance Benefits
(Dollars in thousands)	Three Months Ended						Six Months Ended						Three Months Ended						Six Months Ended
	June 30,						June 30,						June 30,						June 30,
	2019			2018			2019			2018			2019			2018			2019			2018
Service cost	$	—		$	—		$	—		$	—		$	18		$	17		$	36		$	38
Interest cost	1,785			1,692			3,569			3,372			15			16			30			31
Expected return of plan assets	(2,192		)	(2,164		)	(4,384		)	(4,333		)	—			—			—			—
Amortization of prior service credit	—			—			—			—			(253		)	(400		)	(506		)	(801		)
Amortization of net loss	456			457			910			913			—			—			—			—
Net periodic cost (benefit)	$	49		$	(15	)	$	95		$	(48	)	$	(220	)	$	(367	)	$	(440	)	$	(732	)

Employer Contributions

There were no required contributions to our qualified defined benefit pension plans for the three- or six-month periods ended June 30, 2019 and 2018, and we are not required to make additional contributions to these plans for the remainder of 2019. No voluntary contributions were made to our qualified defined benefit pension plans for each of the three- and six-month periods ended June 30, 2019 and 2018.

As there is no funding requirement for the Nonqualified Plans or the Retiree Health and Life Insurance benefit plans, we fund the amount of benefit payments made during the year, which were immaterial for each of the three- and six-month periods ended June 30, 2019 and 2018.

Note 13 – Commitments and Contingencies

We are currently engaged in the following environmental and legal proceedings:

Voluntary Corrective Action Program

Our location 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. Remediation activities on the site are ongoing and are recorded as reductions to the accrual as they are incurred. We incurred an immaterial amount of aggregate remediation costs through June 30, 2019, and the accrual for future remediation efforts is $1.6 million.

Asbestos

Overview

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 summarizes the change in number of asbestos claims outstanding during the six months ended June 30, 2019:

	Asbestos Claims
Claims outstanding as of December 31, 2018	745
New claims filed	165
Pending claims concluded(1)	(106	)
Claims outstanding as of June 30, 2019	804

⁽¹⁾For the six months ended June 30, 2019, 98 claims were dismissed and 8 claims were settled. Settlements totaled approximately $0.7 million for the six months ended June 30, 2019.

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Impact on Financial Statements

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.

The liability projection period covers all current and future claims through 2058, which represents the expected end of our asbestos liability exposure with no further ongoing claims expected beyond that date. This conclusion was based on our history and experience with the claims data, the diminished volatility and consistency of observable claims data, the period of time that has elapsed since we stopped manufacturing products that contained encapsulated asbestos and an expected downward trend in claims due to the average age of our claimants, which is approaching the average life expectancy.

To date, the defense and settlement costs of our asbestos-related product liability litigation have been substantially covered by insurance. Although we have exhausted coverage under some of our insurance policies, we believe that we have applicable primary, excess and/or umbrella coverage for claims arising with respect to most of the years during which we manufactured and marketed asbestos-containing products. 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 covered 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, and no carrier had informed us it intended to terminate the agreement. We expect to continue 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. We are responsible for uninsured defense, indemnity and settlement costs, and we incurred an immaterial amount of expenses for each of the three- and six-month periods ended June 30, 2019 and 2018, respectively, related primarily to such costs.

The amounts recorded for the asbestos-related liability and the related insurance receivables are 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.

As of June 30, 2019 and December 31, 2018, our projected asbestos-related claims and insurance receivables were as follows:

(Dollars in millions)	June 30, 2019		December 31, 2018
Asbestos-related claims	$	70.8	$	70.3
Asbestos-related insurance receivables	$	64.4	$	63.8

General

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 will have a material adverse impact on our results of operations, financial position or cash flows.

Note 14 – Income Taxes

Our effective income tax rate was 22.9% and 32.6% for the three months ended June 30, 2019 and 2018, respectively. The decrease from the second quarter of 2018 was primarily due to the beneficial impact of the international tax provisions from U.S. tax reform as a result of administrative guidance issued during the second half of 2018, changes in valuation allowance related to R&D credits and a lower tax impact on unremitted foreign earnings and profits. Our effective income tax rate was 18.5% and 23.2% for the six months ended June 30, 2019 and 2018, respectively. The decrease from the first half of 2018 was primarily due to the beneficial impact of the international tax provisions from U.S. tax reform as a result of administrative guidance issued during the second half of 2018 and a lower tax impact on unremitted foreign earnings and profits, partially offset by a decrease in current year release of reserves for uncertain tax positions.

The total amount of unrecognized tax benefits as of June 30, 2019 was $9.8 million, of which $9.6 million would affect our effective tax rate if recognized. It is reasonably possible that approximately $1.4 million of our unrecognized tax benefits as of June 30, 2019 will reverse within the next 12 months.

We recognize interest and penalties related to unrecognized tax benefits through income tax expense. As of June 30, 2019, we had $0.6 million accrued for the payment of interest.

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We are subject to taxation in the U.S. and various state and foreign jurisdictions. With few exceptions, we are no longer subject to examinations by tax authorities for years prior to 2014.

Note 15 – Segment Information

Our reporting structure is comprised of the following strategic operating segments: ACS, EMS and PES. The remaining operations, which represent our non-core businesses, are reported in the Other operating segment. We believe this structure aligns our external reporting presentation with how we currently manage and view our business internally.

On January 1, 2018, we adopted Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers. For additional information regarding the impacts of this accounting guidance, refer to “Note 16 – Revenue from Contracts with Customers.” We sell products to fabricators and distributors who then sell directly into various end markets. End markets within our ACS operating segment include wireless infrastructure, aerospace and defense, automotive, connected devices, wired infrastructure and consumer electronics. End markets within our EMS operating segment include portable electronics, mass transit, automotive, consumer and general industrial. End markets within our PES operating segment include e-mobility, industrial, renewable energy, mass transit, and micro channel coolers. End markets in our Other operating segment include automotive and industrial.

The following table presents a disaggregation of revenue from contracts with customers and other pertinent financial information, for the periods indicated; inter-segment sales have been eliminated from the net sales data:

(Dollars in thousands)	Advanced Connectivity Solutions		Elastomeric Material Solutions		Power Electronics Solutions			Other		Total
Three Months Ended June 30, 2019
Net sales - recognized over time	$	—	$	2,965	$	51,319		$	4,313	$	58,597
Net sales - recognized at a point in time	92,529		90,929		343			454		184,255
Total net sales	$	92,529	$	93,894	$	51,662		$	4,767	$	242,852
Operating income	$	18,458	$	15,326	$	(1,884	)	$	1,313	$	33,213
Three Months Ended June 30, 2018
Net sales - recognized over time	$	—	$	907	$	53,052		$	4,616	$	58,575
Net sales - recognized at a point in time	76,376		78,309		595			820		156,100
Total net sales	$	76,376	$	79,216	$	53,647		$	5,436	$	214,675
Operating income	$	10,594	$	8,421	$	4,239		$	1,970	$	25,224
Six Months Ended June 30, 2019
Net sales - recognized over time	$	—	$	5,971	$	110,921		$	8,917	$	125,809
Net sales - recognized at a point in time	172,999		180,685		555			2,602		356,841
Total net sales	$	172,999	$	186,656	$	111,476		$	11,519	$	482,650
Operating income	$	31,522	$	28,757	$	2,383		$	3,351	$	66,013
Six Months Ended June 30, 2018
Net sales - recognized over time	$	—	$	1,941	$	110,451		$	9,265	$	121,657
Net sales - recognized at a point in time	149,831		155,358		909			1,531		307,629
Total net sales	$	149,831	$	157,299	$	111,360		$	10,796	$	429,286
Operating income	$	18,496	$	22,581	$	11,260		$	3,932	$	56,269

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Information relating to our segment operations by geographic area for the three months ended June 30, 2019 and 2018 was as follows:

(Dollars in thousands)	Net Sales (1)
Region/Country	Advanced Connectivity Solutions		Elastomeric Material Solutions		Power Electronics Solutions		Other		Total
June 30, 2019
United States	$	16,272	$	41,370	$	8,208	$	1,079	$	66,929
Other Americas	1,039		2,190		229		206		3,664
Total Americas	17,311		43,560		8,437		1,285		70,593
China	49,333		23,846		11,283		953		85,415
Other APAC	17,026		15,534		6,625		760		39,945
Total APAC	66,359		39,380		17,908		1,713		125,360
Germany	3,951		3,471		14,305		130		21,857
Other EMEA	4,908		7,483		11,012		1,639		25,042
Total EMEA	8,859		10,954		25,317		1,769		46,899
Total net sales	$	92,529	$	93,894	$	51,662	$	4,767	$	242,852
June 30, 2018
United States	$	14,447	$	35,777	$	8,279	$	866	$	59,369
Other Americas	758		2,179		323		725		3,985
Total Americas	15,205		37,956		8,602		1,591		63,354
China	32,032		24,071		8,940		1,410		66,453
Other APAC	18,588		8,324		7,092		649		34,653
Total APAC	50,620		32,395		16,032		2,059		101,106
Germany	4,823		2,595		16,524		163		24,105
Other EMEA	5,728		6,270		12,489		1,623		26,110
Total EMEA	10,551		8,865		29,013		1,786		50,215
Total net sales	$	76,376	$	79,216	$	53,647	$	5,436	$	214,675

⁽¹⁾  Net sales are allocated to countries based on the location of the customer. The table above lists individual countries with 10% or more of net sales for the periods indicated.

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Information relating to our segment operations by geographic area for the six months ended June 30, 2019 and 2018 was as follows:

(Dollars in thousands)	Net Sales (1)
Region/Country	Advanced Connectivity Solutions		Elastomeric Material Solutions		Power Electronics Solutions		Other		Total
June 30, 2019
United States	$	29,343	$	84,835	$	15,685	$	2,369	$	132,232
Other Americas	1,791		4,273		249		397		6,710
Total Americas	31,134		89,108		15,934		2,766		138,942
China	91,822		46,265		22,347		3,466		163,900
Other APAC	31,167		30,022		11,963		1,569		74,721
Total APAC	122,989		76,287		34,310		5,035		238,621
Germany	8,423		6,907		36,252		276		51,858
Other EMEA	10,453		14,354		24,980		3,442		53,229
Total EMEA	18,876		21,261		61,232		3,718		105,087
Total net sales	$	172,999	$	186,656	$	111,476	$	11,519	$	482,650
June 30, 2018
United States	$	26,725	$	73,469	$	16,857	$	2,123	$	119,174
Other Americas	1,584		3,980		681		555		6,800
Total Americas	28,309		77,449		17,538		2,678		125,974
China	65,539		44,865		18,362		2,727		131,493
Other APAC	33,926		17,484		13,543		1,442		66,395
Total APAC	99,465		62,349		31,905		4,169		197,888
Germany	11,073		5,337		31,234		332		47,976
Other EMEA	10,984		12,164		30,683		3,617		57,448
Total EMEA	22,057		17,501		61,917		3,949		105,424
Total net sales	$	149,831	$	157,299	$	111,360	$	10,796	$	429,286

⁽¹⁾  Net sales are allocated to countries based on the location of the customer. The table above lists individual countries with 10% or more of net sales for the periods indicated.

Note 16 – Revenue from Contracts with Customers

Contract Balances

The Company has contract assets primarily related to unbilled revenue for revenue recognized related to products that are deemed to have no alternative use whereby we have the right to payment. Revenue is recognized in advance of billing to the customer in these circumstances as billing is typically performed at the time of shipment to the customer. The unbilled revenue is included in the contract assets on the condensed consolidated statements of financial position.

The Company did not have any contract liabilities as of June 30, 2019 or December 31, 2018.

The following table presents contract assets by operating segment as of June 30, 2019 and December 31, 2018:

(Dollars in thousands)	June 30, 2019		December 31, 2018
Advanced Connectivity Solutions	$	—	$	—
Elastomeric Material Solutions	955		943
Power Electronics Solutions	22,652		19,738
Other	1,966		2,047
Total contract assets	$	25,573	$	22,728

No impairment losses were recognized for each of the three- and six-month periods ended June 30, 2019 and 2018 on any receivables or contract assets arising from our contracts with customers.

Note 17 – Restructuring and Impairment Charges

In 2018, we made the decision to consolidate our Santa Fe Springs, California operations into the Company’s facilities in Carol Stream, Illinois and Bear, Delaware. We recorded $0.1 million and $0.9 million of expense for the three and six months ended

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June 30, 2019, respectively, related to the facility consolidation. We recorded $0.5 million of expense related to this project in the three and six months ended June 30, 2018, respectively. The fair value of the total severance benefits paid in connection with the facility consolidation was $0.5 million. The total severance costs were expensed ratably over the required service period for the affected employees. All severance expenses were recorded as of December 31, 2018, and the final severance payments were made in the first quarter of 2019.

The following table presents severance activity related to the facility consolidation for the six months ended June 30, 2019:

(Dollars in thousands)	Severance Related to Facility Consolidation
Balance as of December 31, 2018	$	523
Provisions	—
Payments	(523		)
Balance as of June 30, 2019	$	—

We recognized $0.9 million and $1.0 million in impairment charges on certain assets in connection with the Isola USA Corp. (Isola) asset acquisition for the three and six months ended June 30, 2019, respectively.

Note 18 – Supplemental Financial Information

The components of “Other operating (income) expense, net” are as follows:

	Three Months Ended						Six Months Ended
(Dollars in thousands)	June 30, 2019			June 30, 2018			June 30, 2019			June 30, 2018
Gain from antitrust litigation settlement	$	—		$	—		$	—		$	(3,591	)
Loss (gain) on sale of property, plant and equipment	3			(383		)	276			(383		)
Lease income	(329		)	—			(876		)	—
Depreciation on leased assets	366			—			1,551			—
Total other operating (income) expense, net	$	40		$	(383	)	$	951		$	(3,974	)

In the first quarter of 2018, we recorded a gain from the settlement of antitrust litigation in the amount of $3.6 million as a result of the settlement of a class action lawsuit, filed in 2005, which alleged that Dow Chemical Company and other urethane raw material suppliers unlawfully agreed to fix, raise, maintain or stabilize the prices of Polyether Polyol Products sold in the United States from January 1, 1999 through December 31, 2004 in violation of the federal antitrust laws.

We recognized lease income of approximately $0.3 million and $0.9 million for the three and six months ended June 30, 2019, respectively, as well as approximately $0.4 million and $1.6 million of related depreciation on leased assets for the three and six months ended June 30, 2019, respectively, in connection with the transitional leaseback of a portion of the facility and certain machinery and equipment acquired from Isola in August 2018.

Note 19 – Recent Accounting Standards

Recently Issued Standards

In August 2018, the Financial Accounting Standards Board (FASB) issued ASU 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans, which modifies the disclosure requirements for employers that sponsor defined benefit plans or other postretirement plans. This ASU is effective for our fiscal year ending December 31, 2020, with early adoption permitted. ASU 2018-14 is required to be applied on a retrospective basis to all periods presented. The Company is currently evaluating the potential impact of adopting this guidance on our consolidated financial statements.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement. This ASU modifies the disclosure requirements for fair value measurements by removing the requirement to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy and the policy for timing of such transfers. This ASU expands the disclosure requirements for Level 3 fair value measurements, primarily focused on changes in unrealized gains and losses included in other comprehensive income (loss). This ASU is effective for our fiscal year ending December 31, 2020 and for the interim periods within that year. Early adoption is permitted. ASU 2018-13 is generally required to be applied retrospectively to all periods presented upon their effective date with the exception of certain amendments, that should be applied prospectively to the most recent interim or annual period presented in the year of adoption. The Company is currently evaluating the potential impact of adopting this guidance on our consolidated financial statements.

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Recently Adopted Standards Reflected in Our 2019 Financial Statements

In October 2018, the FASB issued ASU 2018-16, Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes, which permits the use of the OIS rate based on the SOFR as a U.S. benchmark interest rate for hedge accounting purposes. The amendments in this update were effective for the Company on January 1, 2019 and the Company will apply the amendments in this update to qualifying new or redesignated hedging relationships.

In August 2018, the FASB issued ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract, which aligns the requirements for capitalizing costs incurred in the implementation of a hosting arrangement that is a service contract with the requirements for capitalizing costs incurred to develop or obtain internal use software. The Company adopted this ASU on January 1, 2019 on a prospective basis and it did not have a material impact on our condensed consolidated financial statements.

In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This ASU allows for reclassification of stranded tax effects resulting from U.S. Tax Reform from accumulated other comprehensive loss to retained earnings but it does not require this reclassification. The Company adopted this ASU on January 1, 2019 and elected to not reclassify the stranded tax effects resulting from U.S. Tax Reform. As a result of that election, the adoption of ASU 2018-02 did not have an impact on the Company’s consolidated financial statements and disclosures.

In February 2016, the FASB issued ASU 2016-02, Leases, which 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 classify leases as either finance or operating leases and 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. An accounting policy election may be made to account for leases with a term of 12 months or less similar to existing guidance for operating leases today. ASU 2016-02 supersedes the existing guidance on accounting for leases. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements, which allowed for an optional transition method for the adoption of Topic 842. The two permitted transition methods are now the modified retrospective approach, which applies the new lease requirements at the beginning of the earliest period presented, and the optional transition method, which applies the new lease requirements through a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The Company adopted this standard on January 1, 2019 using the optional transition method. The Company elected to use the practical expedients that allow us to carry forward the historical lease classification. For additional information regarding the impact of the adoption of this standard, refer to “Note 11 - Leases.”

Note 20 – Share Repurchases

In 2015, we initiated a share repurchase program (the Program) of up to $100.0 million of the Company’s capital stock. We initiated the Program to mitigate potentially dilutive effects of stock options and shares of restricted stock granted by the Company, in addition to enhancing shareholder value. The Program has no expiration date, and may be suspended or discontinued at any time without notice. No share repurchases were made during the three and six months ended June 30, 2019. During the three and six months ended June 30, 2018, we repurchased 23,138 shares of our capital stock for $3.0 million. As of June 30, 2019, $49.0 million remained of our $100.0 million share repurchase program.

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Item 2. Management’s Discussion and Analysis of Results of Operations and Financial Position

As used herein, the “Company,” “Rogers,” “we,” “us,” “our” and similar terms include Rogers Corporation and its subsidiaries, unless the context indicates otherwise.

Forward-Looking Statements

This Quarterly Report on Form 10-Q includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such statements are generally accompanied by words such as “anticipate,” “assume,” “believe,” “could,” “estimate,” “expect,” “foresee,” “goal,” “intend,” “may,” “might,” “plan,” “potential,” “predict,” “project,” “should,” “seek,” “target” or similar expressions that convey uncertainty as to future events or outcomes. Forward-looking statements are based on assumptions and beliefs that we believe to be reasonable; however, assumed facts almost always vary from actual results, and the differences between assumed facts and actual results could be material depending upon the circumstances. Where we express an expectation or belief as to future results, that expectation or belief is expressed in good faith and based on assumptions believed to have a reasonable basis. We cannot assure you, however, that the stated expectation or belief will occur or be achieved or accomplished. Among the factors that could cause our results to differ materially from those indicated by forward-looking statements are risks and uncertainties inherent in our business including, without limitation:

• failure to capitalize on, volatility within, or other adverse changes with respect to the Company’s growth drivers, including advanced mobility and advanced connectivity, such as delays in adoption or implementation of new technologies;

• uncertain business, economic and political conditions in the United States and abroad, particularly in China, South Korea, Germany, Hungary and Belgium, where we maintain significant manufacturing, sales or administrative operations;

• the ongoing trade policy dispute between the United States and China, as well as adverse changes in trade policy, tariff regulation or other trade restrictions, including trade restrictions on Huawei Technologies Co., Ltd.;

• fluctuations in foreign currency exchange rates;

• our ability to develop innovative products and the extent to which they are incorporated into end-user products and systems;

• the extent to which end-user products and systems incorporating our products achieve commercial success;

• the ability of our sole or limited source suppliers to deliver certain key raw materials, including commodities, to us in a timely and cost-effective manner;

• intense global competition affecting both our existing products and products currently under development;

• failure to realize, or delays in the realization of, anticipated benefits of acquisitions and divestitures due to, among other things, the existence of unknown liabilities or difficulty integrating acquired businesses;

• our ability to attract and retain management and skilled technical personnel;

• our ability to protect our proprietary technology from infringement by third parties and/or allegations that our technology infringes third party rights;

• changes in effective tax rates or tax laws and regulations in the jurisdictions in which we operate;

• failure to comply with financial and restrictive covenants in our credit agreement or restrictions on our operational and financial flexibility due to such covenants;

• the outcome of ongoing and future litigation, including our asbestos-related product liability litigation;

• changes in environmental laws and regulations applicable to our business;

• uncertainties with regard to the timing, expense and cash outlays associated with the termination and settlement of the Rogers Corporation Defined Benefit Pension Plan (Merged Plan); and

• disruptions in, or breaches of, our information technology systems.

Our forward-looking statements are expressly qualified by these cautionary statements, which you should consider carefully, along with the risks discussed in this section and elsewhere in this report, our Annual Report on Form 10-K for the year ended December 31, 2018 (the Annual Report) and our subsequent reports filed with the Securities and Exchange Commission, any of which could cause actual results to differ materially from historical results or anticipated results. We undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, unless required by law.

The following discussion and analysis of our financial condition and results of operations should be read together with our condensed consolidated financial statements and the related notes that appear elsewhere in this Form 10-Q along with our audited consolidated financial statements and the related notes thereto in our Annual Report.

Executive Summary

Company Background and Strategy

Rogers Corporation designs, develops, manufactures and sells high-quality and high-reliability engineered materials and components for mission critical applications. We operate three strategic operating segments: Advanced Connectivity Solutions (ACS), Elastomeric Material Solutions (EMS) and Power Electronics Solutions (PES). The remaining operations, which represent our non-core businesses, are reported in our Other operating segment. We have a history of innovation and have established

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Innovation Centers for our research and development (R&D) activities in Chandler, Arizona, Burlington, Massachusetts, Eschenbach, Germany and Suzhou, China. We are headquartered in Chandler, Arizona.

Our growth strategy is based upon the following principles: (1) market-driven organization, (2) innovation leadership, (3) synergistic mergers and acquisitions, and (4) operational excellence. As a market-driven organization, we are focused on growth drivers, including advanced connectivity and advanced mobility. More specifically, the key trends currently affecting our business include the increasing use of advanced driver assistance systems (ADAS) and increasing electrification of automotive vehicles, including electric and hybrid electric vehicles (EV/HEV), in the automotive industry and new technology adoption in the telecommunications industry, including next generation wireless infrastructure. In addition to our focus on advanced mobility and advanced connectivity in the automotive and telecommunications industries, we sell into a variety of other end markets including renewable energy, consumer electronics, aerospace and defense and diverse general industrial applications.

Our sales and marketing approach is based on addressing these trends, while our strategy focuses on factors for success as a manufacturer of engineered materials and components: quality, service, cost, efficiency, innovation, technology and product performance. We have expanded our capabilities through organic investment and acquisitions and strive to ensure high quality solutions for our customers. We continue to review and re-align our manufacturing and engineering footprint in an effort to attain a leading competitive position globally. We have established or expanded our capabilities in various locations in support of our customers’ growth initiatives.

We seek to enhance our operational and financial performance by investing in research and development, manufacturing and materials efficiencies, and new product initiatives that respond to the needs of our customers. We strive to evaluate operational and strategic alternatives to improve our business structure and align our business with the changing needs of our customers and major industry trends affecting our business.

Results of Operations

In the second quarter of 2019 as compared to the second quarter of 2018, our net sales increased 13.1% to $242.9 million, gross margin decreased approximately 40 basis points to 35.3%, and operating margin increased approximately 200 basis points to 13.7%. In the first half of 2019 as compared to the first half of 2018, our net sales increased 12.4% to $482.7 million, gross margin decreased approximately 20 basis points to 35.5%, and operating margin increased approximately 60 basis points to 13.7%.

The following table sets forth, for the periods indicated, selected operations data expressed as a percentage of net sales:

	Three Months Ended				Six Months Ended
	June 30, 2019		June 30, 2018		June 30, 2019		June 30, 2018
Net sales	100.0	%	100.0	%	100.0	%	100.0	%
Gross margin	35.3	%	35.7	%	35.5	%	35.7	%
Selling, general and administrative expenses	18.0	%	19.8	%	18.0	%	19.4	%
Research and development expenses	3.2	%	4.1	%	3.2	%	3.9	%
Restructuring and impairment charges	0.4	%	0.3	%	0.4	%	0.2	%
Other operating (income) expense, net	0.1	%	(0.2	)%	0.3	%	(0.9	)%
Operating income	13.7	%	11.7	%	13.7	%	13.1	%
Equity income in unconsolidated joint ventures	0.7	%	0.8	%	0.5	%	0.7	%
Other income (expense), net	(0.6	)%	—	%	—	%	—	%
Interest expense, net	(0.8	)%	(0.5	)%	(0.8	)%	(0.6	)%
Income before income tax expense	13.0	%	12.0	%	13.4	%	13.2	%
Income tax expense	3.0	%	3.9	%	2.5	%	3.1	%
Net income	10.0	%	8.1	%	10.9	%	10.1	%

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Net Sales and Gross Margin
	Three Months Ended					Six Months Ended
(Dollars in thousands)	June 30, 2019		June 30, 2018		Percent Change	June 30, 2019		June 30, 2018		Percent Change
Net sales	$	242,852	$	214,675	13.1%	$	482,650	$	429,286	12.4%

Net sales increased by 13.1% in the second quarter of 2019 compared to the second quarter of 2018. Our ACS and EMS operating segments had net sales increases of 21.1% and 18.5%, respectively, partially offset by a net sales decreases in our PES operating segment of 3.7%. The increase in net sales was driven in part by net sales of $7.3 million, or 3.4%, related to our acquisition of Griswold LLC (Griswold) in July 2018. Net sales were favorably impacted by higher net sales in both 5G and 4G wireless infrastructure, as well as automotive radar and portable electronics applications in our ACS operating segment, higher net sales in portable electronics, mass transit and automotive applications in our EMS operating segment. This increase was partially offset by an unfavorable foreign currency impact of $8.1 million, or 3.8%, due to the depreciation in value of the Euro, Renminbi and Korean Won relative to the U.S. dollar.

Net sales increased by 12.4% in the first half of 2019 compared to the first half of 2018. Our ACS and EMS operating segments had net sales increases of 15.5% and 18.7%, respectively. The increase in net sales was driven in part by net sales of $15.0 million, or 3.5%, related to our acquisition of Griswold in July 2018. Net sales were favorably impacted by higher net sales in 5G wireless infrastructure, as well as aerospace and defense, automotive radar and portable electronics applications in our ACS operating segment, higher net sales in portable electronics, mass transit and automotive applications in our EMS operating segment. This increase was partially offset by an unfavorable foreign currency impact of $14.2 million, or 3.3%, due to the depreciation in value of the Euro, Renminbi and Korean Won relative to the U.S. dollar.

Gross margin as a percentage of net sales decreased approximately 40 basis points to 35.3% in the second quarter of 2019 compared to 35.7% in the second quarter of 2018. Gross margin in the second quarter of 2019 was negatively impacted by lower net sales, productivity challenges and unfavorable absorption of fixed costs in our PES operating segment, as well as an increase in freight expenses, including tariffs and duties, incurred by our ACS and EMS operating segments. This was partially offset by higher net sales, favorable product mix and productivity improvements in our ACS and EMS operating segments, as well as increased asset utilization in our ACS operating segment.

Gross margin as a percentage of net sales decreased approximately 20 basis points to 35.5% in the first half of 2019 compared to 35.7% in the first half of 2018. Gross margin in the second quarter of 2019 was negatively impacted by lower net sales, productivity challenges, increased freight expenses and unfavorable absorption of fixed costs in our PES operating segment, as well as an increase in freight expenses, including tariffs and duties, incurred by our ACS and EMS operating segments. This was partially offset by higher net sales, favorable product mix, increased absorption of fixed overhead costs and productivity improvements in our ACS and EMS operating segments and increased asset utilization in our ACS operating segment, as well as the resolution of certain process issues that had negatively impacted gross margin in the first half of 2018.

Selling, General and Administrative Expenses
	Three Months Ended							Six Months Ended
(Dollars in thousands)	June 30, 2019			June 30, 2018			Percent Change	June 30, 2019			June 30, 2018			Percent Change
Selling, general and administrative expenses	$	43,649		$	42,540		2.6%	$	86,901		$	83,137		4.5%
Percentage of net sales	18.0		%	19.8		%		18.0		%	19.4		%

Selling, general and administrative (SG&A) expenses increased 2.6% in the second quarter of 2019 from the second quarter of 2018, primarily due to a $2.7 million increase in total compensation and benefits, a $0.6 million increase in other intangible assets amortization, most of which was related to our acquisition of Griswold, and a $0.3 million increase in other SG&A expenses related to Griswold. This was partially offset by a $2.4 million decrease in professional service costs.

SG&A expenses increased 4.5% in the first half of 2019 from the first half of 2018, primarily due to a $3.6 million increase in total compensation and benefits, a $1.2 million increase in other intangible assets amortization, most of which was related to our acquisition of Griswold, and a $0.7 million increase in other SG&A expenses related to Griswold. This was partially offset by a $2.5 million decrease in professional service costs.

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Research and Development Expenses
	Three Months Ended							Six Months Ended
(Dollars in thousands)	June 30, 2019			June 30, 2018			Percent Change	June 30, 2019			June 30, 2018			Percent Change
Research and development expenses	$	7,843		$	8,750		(10.4)%	$	15,452		$	16,884		(8.5)%
Percentage of net sales	3.2		%	4.1		%		3.2		%	3.9		%

R&D expenses decreased 10.4% in the second quarter of 2019 from the second quarter of 2018, due to lower compensation and benefits costs. R&D expenses decreased 8.5% in the first half of 2019 from the first half of 2018, due to the timing of new product initiatives and lower compensation and benefits costs.

Restructuring and Impairment Charges and Other Operating Expenses (Income), Net
	Three Months Ended						Six Months Ended
(Dollars in thousands)	June 30, 2019		June 30, 2018			Percent Change	June 30, 2019		June 30, 2018			Percent Change
Restructuring and impairment charges	$	1,083	$	541		100.2%	$	1,905	$	963		97.8%
Other operating (income) expense, net	40		(383		)	(110.4)%	951		(3,974		)	(123.9)%

We incurred restructuring charges associated with the relocation of our global headquarters from Rogers, Connecticut to Chandler, Arizona and the consolidation of our Santa Fe Springs, California operations with the Company’s facilities in Carol Stream, Illinois and Bear, Delaware. We recognized $0.1 million of restructuring charges associated with the facility consolidation in the second quarter of 2019, and $0.6 million of restructuring charges related to the global headquarters relocation and facility consolidation in the second quarter of 2018. We recognized $0.9 million of restructuring charges associated with the facility consolidation in the first half of 2019 and $1.0 million of restructuring charges related to the headquarters relocation and facility consolidation in the first half of 2018. Additionally, we recognized $0.9 million and $1.0 million in impairment charges on certain assets in connection with the Isola USA Corp. (Isola) asset acquisition for three and six months ended June 30, 2019, respectively.

With respect to other operating (income) expense, net, in connection with the transitional leaseback of a portion of the facility and certain machinery and equipment acquired from Isola in August 2018, we recognized lease income and related depreciation on leased assets of approximately $0.3 million and $0.4 million, respectively, in the second quarter of 2019, and approximately $0.9 million and $1.6 million, respectively, in the first half of 2019. In the first half of 2018, we recognized a $3.6 million gain from the settlement of antitrust litigation in other operating income.

If termination of the Merged Plan is approved by the Chief Executive Officer, the Company expects to record a pension settlement charge at plan termination, which will include, as a non-cash charge, the immediate recognition into expense of the unrecognized losses within accumulated other comprehensive loss on the statement of financial position as of the plan termination date. The Company does not have a current estimate of these future charges, however, the pre-tax accumulated other comprehensive loss related to the Merged Plan was approximately $47 million as of June 30, 2019.

Equity Income in Unconsolidated Joint Ventures
	Three Months Ended					Six Months Ended
(Dollars in thousands)	June 30, 2019		June 30, 2018		Percent Change	June 30, 2019		June 30, 2018		Percent Change
Equity income in unconsolidated joint ventures	$	1,742	$	1,804	(3.4)%	$	2,579	$	2,811	(8.3)%

As of June 30, 2019, we had two unconsolidated joint ventures, each 50% owned: Rogers INOAC Corporation (RIC) and Rogers INOAC Suzhou Corporation (RIS). Equity income in those unconsolidated joint ventures decreased 3.4% in the second quarter of 2019 from the second quarter of 2018, and decreased 8.3% in the first half of 2019 from the first half of 2018. The decrease, on both a quarter-to-date and year-to-date basis, was due to lower net sales for RIC and RIS in portable electronics applications and unfavorable foreign currency impacts on RIS.

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Other Income (Expense), Net
	Three Months Ended							Six Months Ended
(Dollars in thousands)	June 30, 2019			June 30, 2018			Percent Change	June 30, 2019		June 30, 2018		Percent Change
Other income (expense), net	$	(1,401	)	$	(34	)	4,020.6%	$	3	$	32	(90.6)%

Other income (expense), net decreased to $1.4 million in the second quarter of 2019 from a nominal amount of expense and income in the second quarter and first half of 2018, respectively. The decrease was due to unfavorable impacts from our copper derivative contracts and foreign currency transactions.

Interest Expense, Net
	Three Months Ended							Six Months Ended
(Dollars in thousands)	June 30, 2019			June 30, 2018			Percent Change	June 30, 2019			June 30, 2018			Percent Change
Interest expense, net	$	(2,038	)	$	(1,292	)	57.7%	$	(3,976	)	$	(2,503	)	58.8%

Interest expense, net, increased by 57.7% in the second quarter of 2019 from the second quarter of 2018, and increased by 58.8% in the first half of 2019 from the first half of 2018, due to a higher average outstanding balance on our revolving credit facility. This is a result of borrowings under our revolving credit facility during the third quarter of 2018 to fund the acquisition of Griswold and our voluntary pension contribution in connection with the proposed plan termination process, partially offset by $33.0 million of discretionary principal payments on our revolving credit facility in the first half of 2019.

Income Taxes
	Three Months Ended							Six Months Ended
(Dollars in thousands)	June 30, 2019			June 30, 2018			Percent Change	June 30, 2019			June 30, 2018			Percent Change
Income tax expense	$	7,223		$	8,373		(13.7)%	$	11,927		$	13,144		(9.3)%
Effective tax rate	22.9		%	32.6		%		18.5		%	23.2		%

Our effective income tax rate was 22.9% and 32.6% for the three months ended June 30, 2019 and 2018, respectively. The decrease from the second quarter of 2018 was primarily due to the beneficial impact of the international tax provisions from U.S. tax reform as a result of administrative guidance issued during the second half of 2018, changes in valuation allowance related to R&D credits and a lower tax impact on unremitted foreign earnings and profits. Our effective income tax rate was 18.5% and 23.2% for the six months ended June 30, 2019 and 2018, respectively. The decrease from the first half of 2018 was primarily due to the beneficial impact of the international tax provisions from U.S. tax reform as a result of administrative guidance issued during the second half of 2018 and a lower tax impact on unremitted foreign earnings and profits, partially offset by a decrease in current year release of reserves for uncertain tax positions.

Operating Segment Net Sales and Operating Income

Advanced Connectivity Solutions

	Three Months Ended				Six Months Ended
(Dollars in thousands)	June 30, 2019		June 30, 2018		June 30, 2019		June 30, 2018
Net sales	$	92,529	$	76,376	$	172,999	$	149,831
Operating income	$	18,458	$	10,594	$	31,522	$	18,496

Our ACS operating segment designs, develops, manufactures and sells circuit materials and solutions enabling high-performance and high-reliability connectivity for applications in wireless infrastructure (e.g., power amplifiers, antennas, small cells and distributed antenna systems), automotive (e.g., active safety, advanced driver assistance systems, telematics and thermal management), aerospace and defense, connected devices (e.g., mobile internet devices and Internet of Things), wired infrastructure (e.g., computing and IP infrastructure) and consumer electronics. In August 2018, we purchased assets from Isola to expand capacity in our ACS operating segment in an effort to prepare for potential demand from our 5G customers.

Q2 2019 versus Q2 2018

ACS net sales increased by 21.1% in the second quarter of 2019 compared to the second quarter of 2018. The increase in net sales over the second quarter of 2018 was primarily driven by higher net sales in both 5G and 4G wireless infrastructure, as well as automotive radar and portable electronics applications. Net sales were unfavorably impacted by $2.5 million, or 3.3%, due to the depreciation in value of the Euro and Renminbi relative to the U.S. dollar.

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Operating income increased by 74.2% in the second quarter of 2019 from the second quarter of 2018. As a percentage of net sales, operating income in the second quarter of 2019 was 19.9%, an approximately 600 basis point increase as compared to the 13.9% reported in the second quarter of 2018. The increase in operating income was primarily due to higher net sales, favorable product mix, productivity improvements and increased asset utilization, partially offset by an increase in freight expenses, including tariffs and duties, incurred and a $0.9 million in impairment charges on certain assets in connection with the Isola asset acquisition.

YTD 2019 versus YTD 2018

ACS net sales increased by 15.5% in the first half of 2019 compared to the first half of 2018. The increase in net sales over the first half of 2018 was primarily driven by higher net sales in 5G wireless infrastructure, as well as aerospace and defense, automotive radar and portable electronics applications. Net sales were unfavorably impacted by $4.3 million, or 2.9%, due to the depreciation in value of the Euro and Renminbi relative to the U.S. dollar.

Operating income increased by 70.4% in the first half of 2019 from the first half of 2018. As a percentage of net sales, operating income in the first half of 2019 was 18.2%, an approximately 590 basis point increase as compared to the 12.3% reported in the first half of 2018. The increase in operating income was primarily due to higher net sales, favorable product mix, productivity improvements and increased asset utilization, as well as the resolution of certain process issues that had negatively impacted gross margin in the first half of 2018, partially offset by an increase in freight expenses, including tariffs and duties, incurred and a $1.0 million in impairment charges on certain assets in connection with the Isola asset acquisition.

Elastomeric Material Solutions

	Three Months Ended				Six Months Ended
(Dollars in thousands)	June 30, 2019		June 30, 2018		June 30, 2019		June 30, 2018
Net sales	$	93,894	$	79,216	$	186,656	$	157,299
Operating income	$	15,326	$	8,421	$	28,757	$	22,581

Our EMS operating segment designs, develops, manufactures and sells engineered material solutions for a wide variety of applications and end markets. These applications and end markets include polyurethane and silicone materials used in critical cushioning, sealing and vibration management applications for portable electronics (e.g., smart phones), automotive, aerospace, rail, footwear and printing end markets; customized silicones used in flex heater and semiconductor thermal applications; polytetrafluoroethylene and ultra-high molecular weight polyethylene materials used in wire and cable, pressure-sensitive tapes and automotive applications.

Q2 2019 versus Q2 2018

EMS net sales increased by 18.5% in the second quarter of 2019 compared to the second quarter of 2018. The increase in net sales over the second quarter of 2018 was primarily driven by net sales related to our acquisition of Griswold of $7.3 million, or 9.2%, along with higher net sales in portable electronics, mass transit and automotive applications. Net sales were unfavorably impacted by $2.2 million, or 2.7%, due to the depreciation in value of the Euro, Renminbi and Korean Won relative to the U.S. dollar.

Operating income increased by 82.0% in the second quarter of 2019 from the second quarter of 2018. As a percentage of net sales, second quarter of 2019 operating income was 16.3%, an approximately 570 basis point increase as compared to the 10.6% reported in the second quarter of 2018. The increase in operating income was primarily due to higher net sales, favorable product mix and productivity improvements, partially offset by an increase in freight expenses incurred.

YTD 2019 versus YTD 2018

EMS net sales increased by 18.7% in the first half of 2019 compared to the first half of 2018. The increase in net sales over the first half of 2018 was primarily driven by net sales related to our acquisition of Griswold of $15.0 million, or 9.6%, along with higher net sales in portable electronics, mass transit and automotive applications. Net sales were unfavorably impacted by $3.7 million, or 2.3%, due to the depreciation in value of the Euro, Renminbi and Korean Won relative to the U.S. dollar.

Operating income increased by 27.4% in the first half of 2019 from the first half of 2018. As a percentage of net sales, first half of 2019 operating income was 15.4%, an approximately 100 basis point increase as compared to the 14.4% reported in the first half of 2018. The increase in operating income was primarily due to higher net sales, favorable product mix and productivity improvements, partially offset by the non-recurring $3.6 million gain from the settlement of antitrust litigation in the first half of 2018, as well as an increase in freight expenses incurred.

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Power Electronics Solutions

	Three Months Ended					Six Months Ended
(Dollars in thousands)	June 30, 2019			June 30, 2018		June 30, 2019		June 30, 2018
Net sales	$	51,662		$	53,647	$	111,476	$	111,360
Operating income (loss)	$	(1,884	)	$	4,239	$	2,383	$	11,260

Our PES operating segment designs, develops, manufactures and sells ceramic substrate materials for power module applications (e.g., variable frequency drives, vehicle electrification and renewable energy), laminated busbars for power inverter and high power interconnect applications (e.g., mass transit, hybrid-electric and electric vehicles, renewable energy and variable frequency drives) and micro-channel coolers (e.g., laser cutting equipment). We sell our ceramic substrate materials and micro-channel coolers under the curamik^® trade name, and our busbars under the ROLINX^® trade name.

Q2 2019 versus Q2 2018

PES net sales decreased by 3.7% in the second quarter of 2019 from the second quarter of 2018. The decrease in net sales over the second quarter of 2018 was primarily driven by lower net sales in industrial applications, partially offset by higher net sales in mass transit applications. Net sales were impacted by unfavorable currency fluctuations of $3.2 million, or 6.0%, due to the depreciation in value of the Euro and Renminbi relative to the U.S. dollar.

Operating income decreased by 144.4% in the second quarter of 2019 from the second quarter of 2018. As a percentage of net sales, second quarter of 2019 operating loss was 3.6%, an approximately 1,150 basis point decrease as compared to the 7.9% for operating income reported in the second quarter of 2018. The decrease in operating income was primarily due to productivity challenges, unfavorable absorption of fixed overhead costs and lower net sales.

YTD 2019 versus YTD 2018

PES net sales increased by 0.1% in the first half of 2019 compared to the first half of 2018. The increase in net sales over the first half of 2018 was primarily driven by higher net sales in mass transit applications, partially offset by lower net sales in industrial, vehicle electrification and renewable energy applications. Net sales were impacted by unfavorable currency fluctuations of $6.0 million, or 5.4%, due to the depreciation in value of the Euro and Renminbi relative to the U.S. dollar.

Operating income decreased by 78.8% in the first half of 2019 from the first half of 2018. As a percentage of net sales, first half of 2019 operating income was 2.1%, an approximately 800 basis point decrease as compared to the 10.1% reported in the first half of 2018. The decrease in operating income was primarily due to productivity challenges, unfavorable absorption of fixed overhead costs, higher fixed overhead expenses and increased freight expenses.

Other

	Three Months Ended				Six Months Ended
(Dollars in thousands)	June 30, 2019		June 30, 2018		June 30, 2019		June 30, 2018
Net sales	$	4,767	$	5,436	$	11,519	$	10,796
Operating income	$	1,313	$	1,970	$	3,351	$	3,932

Our Other operating segment consists of elastomer components for applications in ground transportation, office equipment, consumer and other markets; elastomer floats for level sensing in fuel tanks, motors, and storage tanks; and inverters for portable communications and automotive markets. Trade names for our elastomer components include: NITROPHYL^® floats for level sensing in fuel tanks, motors, and storage tanks and ENDUR^® elastomer rollers.

Q2 2019 versus Q2 2018

Net sales in this segment decreased by 12.3% in the second quarter of 2019 from the second quarter of 2018. The decrease in net sales over the second quarter of 2018 was primarily driven by weaker demand in the ECD business, as well as an unfavorable foreign currency impact of $0.2 million.

Operating income decreased 33.4% in the second quarter of 2019 compared to the second quarter of 2018. This decrease in operating income was primarily driven by lower net sales and unfavorable product mix. As a percentage of net sales, second quarter of 2019 operating income was 27.5%, an approximately 870 basis point decrease as compared to the 36.2% reported in the second quarter of 2018.

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YTD 2019 versus YTD 2018

Net sales in this segment increased by 6.7% in the first half of 2019 from the first half of 2018. The increase in net sales over the first half of 2018 was primarily driven by a last-time buy in the Durel business, partially offset by weaker demand in the ECD business and an unfavorable foreign currency impact of $0.3 million.

Operating income decreased 14.8% in the first half of 2019 compared to the first half of 2018. This decrease in operating income was primarily driven by unfavorable absorption of fixed overhead costs and unfavorable product mix, partially offset by higher net sales. As a percentage of net sales, first half of 2019 operating income was 29.1%, an approximately 730 basis point decrease as compared to the 36.4% reported in the first half of 2018.

Liquidity, Capital Resources and Financial Position

We believe that our existing sources of liquidity and cash flows that we expect to generate from our operations, together with our available credit facilities, will be sufficient to fund our operations, currently planned capital expenditures, research and development efforts and our debt service commitments, for at least the next 12 months. We regularly review and evaluate the adequacy of our cash flows, borrowing facilities and banking relationships in an effort to ensure that we have the appropriate access to cash to fund both our near-term operating needs and our long-term strategic initiatives.

The following table illustrates the location of our cash and cash equivalents by our three major geographic areas:

(Dollars in thousands)	June 30, 2019		December 31, 2018
United States	$	39,240	$	41,833
Europe	32,613		31,244
Asia	101,215		94,661
Total cash and cash equivalents	$	173,068	$	167,738

Approximately $133.8 million of our cash and cash equivalents were held by non-U.S. subsidiaries as of June 30, 2019. The Company did not make any changes in the first half of 2019 to its position on the permanent reinvestment of its earnings from foreign operations. With the exception of certain of our Chinese subsidiaries, where a substantial portion of our Asia cash and cash equivalents are held, we continue to assert that historical foreign earnings are indefinitely reinvested.

(Dollars in thousands)	June 30, 2019		December 31, 2018
Key Financial Position Accounts:
Cash and cash equivalents	$	173,068	$	167,738
Accounts receivable, net	$	156,924	$	144,623
Contract assets	$	25,573	$	22,728
Inventories	$	135,067	$	132,637
Borrowings under revolving credit facility	$	195,482	$	228,482

Changes in key financial position accounts and other significant changes in our statements of financial position from December 31, 2018 to June 30, 2019 were as follows:

• Accounts receivable, net increased 8.5% to $156.9 million as of June 30, 2019, from $144.6 million as of December 31, 2018. The increase from year-end was primarily due to higher net sales at the end of the second quarter of 2019 compared to at the end of the 2018.

• Contract assets increased 12.5% to $25.6 million as of June 30, 2019, from $22.7 million as of December 31, 2018, as a result of an increase in no-alternative-use inventory, mainly attributable to the increase in demand over the first six months of 2019 in our PES operating segment.

• Inventories increased 1.8% to $135.1 million as of June 30, 2019, from $132.6 million as of December 31, 2018, primarily driven by build-up of raw materials in our PES operating segment due to reduced volume in the second quarter.

• Borrowings under revolving credit facility decreased 14.4% to $195.5 million as of June 30, 2019, from $228.5 million as of December 31, 2018, as a result of $33.0 million of principal payments made in the first half of 2019.

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(Dollars in thousands)	Three Months Ended
Key Cash Flow Measures:	June 30, 2019			June 30, 2018
Net cash provided by operating activities	$	67,501		$	22,818
Net cash used in investing activities	(21,392		)	(19,150		)
Net cash used in financing activities	(39,699		)	(8,461		)

As of June 30, 2019, cash and cash equivalents were $173.1 million as compared to $167.7 million as of December 31, 2018, an increase of $5.3 million, or 3.2%. This increase was primarily due to cash flows generated by operations, largely offset by $24.0 million in capital expenditures, $33.0 million of principal payments made on our outstanding borrowings under our revolving credit facility and $7.4 million in tax payments related to net share settlement of equity awards.

Revolving Credit Facility

In 2017, we entered into a secured five year credit agreement with JPMorgan Chase Bank, N.A., as administrative agent, and the lenders party thereto (the Third Amended Credit Agreement), which amended and restated the Second Amended Credit Agreement. The Third Amended Credit Agreement refinanced the Second Amended Credit Agreement, eliminated the term loan under the Second Amended Credit Agreement, increased the principal amount of our revolving credit facility to up to $450.0 million of borrowing capacity, with sublimits for multicurrency borrowings, letters of credit and swing-line notes, and provided an additional $175.0 million accordion feature.

All revolving loans under the Third Amended Credit Agreement are due on the maturity date, February 17, 2022. We are not required to make any quarterly principal payments under the Third Amended Credit Agreement. As of June 30, 2019, we had $195.5 million in outstanding borrowings under our revolving credit facility.

Restrictions on Payment of Dividends

Our Third 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 2.75 to 1.00. If our leverage ratio exceeds 2.75 to 1.00, we may nonetheless make up to $20.0 million in restricted payments, including cash dividends, during the fiscal year, provided that no default or event of default has occurred and is continuing or would result from the payments. Our leverage ratio did not exceed 2.75 to 1.00 as of June 30, 2019.

Contingencies

During the second quarter of 2019, we did not become aware of any material developments related to environmental matters disclosed in our Annual Report, our asbestos litigation or other material contingencies previously disclosed or incur any material costs or capital expenditures related to such matters. Refer to “Note 13 – Commitments and Contingencies” to the condensed consolidated financial statements in Part I, Item 1 of this Form 10-Q for further discussion of these contingencies.

Off-Balance Sheet Arrangements

As of June 30, 2019, we did not have any off-balance sheet arrangements that have or are, in the opinion of management, reasonably likely to have a current or future material effect on our results of operations or financial position.

Critical Accounting Policies

Leases

In February 2016, the FASB issued ASU 2016-02, Leases, which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e., lessees and lessors). In our adoption of ASU 2016-02, we applied the practical expedients to recognize lease payments in the condensed consolidated statements of operations on a straight-line basis over the term of the lease for short-term leases. Additionally, we elected the package of practical expedients that allows us to carry forward the historical lease classification and accounting for indirect costs for any existing leases. Refer to “Note 11 - Leases” to the condensed consolidated financial statements in Part I, Item 1 of this Form 10-Q.

Recent Accounting Pronouncements

Refer to “Note 19 – Recent Accounting Standards” to the condensed consolidated financial statements in Part I, Item 1 of this Form 10-Q for discussion of recent accounting pronouncements including expected dates of adoption.

Item 3.    Quantitative and Qualitative Disclosures About Market Risk

There have been no material changes in our exposure to market risk during the second quarter of 2019. For discussion of our exposure to market risk, refer to “Item 7A. Quantitative and Qualitative Disclosures About Market Risk” contained in our Annual Report.

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Item 4. Controls and Procedures

EVALUATION OF DISCLOSURE CONTROLS AND PROCEDURES

The Company, with the participation of our Chief Executive Officer and Chief Financial Officer, conducted an evaluation of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d- 15(e) under the Securities Exchange Act of 1934, as amended (the Exchange Act), as of June 30, 2019. The Company’s disclosure controls and procedures are designed (i) to ensure that information required to be disclosed by it in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and (ii) to ensure that information required to be disclosed in the reports the Company files or submits under the Exchange Act is accumulated and communicated to its management, including its Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure. Based on their evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that the Company’s disclosure controls and procedures were effective as of June 30, 2019.

CHANGES IN INTERNAL CONTROL OVER FINANCIAL REPORTING

There were no changes in the Company’s internal control over financial reporting during its most recently completed fiscal quarter that have materially affected or are reasonably likely to materially affect the Company’s internal control over financial reporting, as defined in Rule 13a-15(f) and 15d-15(f) under the Exchange Act.

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Part II - Other Information

Item 1. Legal Proceedings

Refer to the discussion of certain environmental, asbestos and other litigation matters in “Note 13 – Commitments and Contingencies” to the condensed consolidated financial statements in Part I, Item 1 of this Form 10-Q.

Item 6.    Exhibits

List of Exhibits:
3.1	Restated Articles of Organization of Rogers Corporation, as amended, incorporated by reference to Exhibit 3a to the Registrant’s Annual Report on Form 10-K for the fiscal year ended December 31, 2006.
3.2	Amended and Restated Bylaws of Rogers Corporation, effective February 11, 2016, incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K filed on February 26, 2016.
10.1	Rogers Corporation 2019 Long-Term Equity Compensation Plan, incorporated by reference to Exhibit 4.1 to the Registrant’s Registration Statement on Form S-8 filed on May 14, 2019.
10.2	Form of Performance-Based Restricted Stock Award Agreement under the 2019 Plan, filed herewith.
10.3	Form of Time-Based Restricted Stock Unit Award Agreement under the 2019 Plan, filed herewith.
31.1	Certification of President and Chief Executive Officer (Principal Executive Officer) pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.2	Certification of Senior Vice President, Chief Financial Officer and Treasurer (Principal Financial Officer) pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
32	Certification of President and Chief Executive Officer (Principal Executive Officer) and Senior Vice President, Chief Financial Officer and Treasurer (Principal Financial Officer) pursuant to Rule 13a-14(b) of the Securities Exchange Act of 1934 and 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
101	The following materials from Rogers Corporation’s Quarterly Report on Form 10-Q for the fiscal quarter ended June 30, 2019 formatted in iXBRL (Inline Extensible Business Reporting Language): (i) Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2019 and June 30, 2018, (ii) Condensed Consolidated Statements of Comprehensive Income (Loss) for the three and six months ended June 30, 2019 and June 30, 2018, (iii) Condensed Consolidated Statements of Financial Position at June 30, 2019 and December 31, 2018, (iv) Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2019 and June 30, 2018, (v) Notes to Condensed Consolidated Financial Statements and (vi) Cover Page.

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Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

ROGERS CORPORATION

(Registrant)

/s/ Michael M. Ludwig

Michael M. Ludwig

Senior Vice President, Chief Financial Officer and Treasurer

Principal Financial Officer

Dated: July 31, 2019

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EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Bruce D. Hoechner, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Rogers Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated: July 31, 2019

/s/ Bruce D. Hoechner

Bruce D. Hoechner

President and Chief Executive Officer

Principal Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Michael M. Ludwig, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Rogers Corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated: July 31, 2019

/s/ Michael M. Ludwig

Michael M. Ludwig

Senior Vice President, Chief Financial Officer and Treasurer

Principal Financial Officer

EX-32

Exhibit 32

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned officers of Rogers Corporation, a Massachusetts corporation (the “Corporation”), does hereby certify that:

The Quarterly Report on Form 10-Q for the fiscal quarter ended June 30, 2019 (the “Form 10-Q”) of the Corporation fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Corporation.

/s/ Bruce D. Hoechner

Bruce D. Hoechner

President and Chief Executive Officer

Principal Executive Officer

July 31, 2019

/s/ Michael M. Ludwig

Michael M. Ludwig

Senior Vice President, Chief Financial Officer and Treasurer Principal Financial Officer

July 31, 2019

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Jul. 26, 2019
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2019
Document Transition Report	false
Entity File Number	1-4347
Entity Registrant Name	ROGERS CORP
Entity Incorporation, State or Country Code	MA
Entity Tax Identification Number	06-0513860
Entity Address, Address Line One	2225 W. Chandler Blvd.
Entity Address, City or Town	Chandler
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85224-6155
City Area Code	480
Local Phone Number	917-6000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Central Index Key	0000084748
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Small Business	false
Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		18,559,612
New York Stock Exchange
Entity Information [Line Items]
Title of 12(b) Security	Common Stock,
Entity Trading Symbol	ROG
Security Exchange Name	NYSE

XML

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net sales	$ 242,852	$ 214,675	$ 482,650	$ 429,286
Cost of sales	157,024	138,003	311,428	276,007
Gross margin	85,828	76,672	171,222	153,279
Selling, general and administrative expenses	43,649	42,540	86,901	83,137
Research and development expenses	7,843	8,750	15,452	16,884
Restructuring and impairment charges	1,083	541	1,905	963
Other operating (income) expense, net	40	(383)	951	(3,974)
Operating income	33,213	25,224	66,013	56,269
Equity income in unconsolidated joint ventures	1,742	1,804	2,579	2,811
Other income (expense), net	(1,401)	(34)	3	32
Interest expense, net	(2,038)	(1,292)	(3,976)	(2,503)
Income before income tax expense	31,516	25,702	64,619	56,609
Income tax expense	7,223	8,373	11,927	13,144
Net income	$ 24,293	$ 17,329	$ 52,692	$ 43,465
Basic earnings per share (in dollars per share)	$ 1.31	$ 0.94	$ 2.84	$ 2.37
Diluted earnings per share (in dollars per share)	$ 1.30	$ 0.93	$ 2.82	$ 2.33
Shares used in computing:
Basic earnings per share (in shares)	18,568	18,389	18,562	18,338
Diluted earnings per share (in shares)	18,730	18,660	18,711	18,635

XML

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 24,293	$ 17,329	$ 52,692	$ 43,465
Foreign currency translation adjustment	2,182	(15,294)	(2,075)	(8,293)
Derivative instrument designated as cash flow hedge:
Change in unrealized gain (loss) before reclassifications, net of tax (Note 4)	(810)	349	(1,204)	1,153
Unrealized (gain) loss reclassified into earnings, net of tax (Note 4)	(62)	(29)	(156)	(56)
Pension and other postretirement benefits:
Amortization of loss, net of tax (Note 4)	157	44	313	87
Other comprehensive income (loss)	1,467	(14,930)	(3,122)	(7,109)
Comprehensive income	$ 25,760	$ 2,399	$ 49,570	$ 36,356

XML

CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 173,068	$ 167,738
Accounts receivable, less allowance for doubtful accounts of $1,215 and $1,354	156,924	144,623
Contract assets	25,573	22,728
Inventories	135,067	132,637
Prepaid income taxes	4,275	3,093
Asbestos-related insurance receivables, current portion	4,138	4,138
Other current assets	10,814	10,829
Total current assets	509,859	485,786
Property, plant and equipment, net of accumulated depreciation of $331,553 and $317,414	248,309	242,759
Investments in unconsolidated joint ventures	17,534	18,667
Deferred income taxes	11,080	8,236
Goodwill	263,804	264,885
Other intangible assets, net of amortization	167,985	177,008
Pension assets	19,918	19,273
Asbestos-related insurance receivables, non-current portion	60,247	59,685
Other long-term assets	8,617	3,045
Total assets	1,307,353	1,279,344
Current liabilities
Accounts payable	42,214	40,321
Accrued employee benefits and compensation	31,798	30,491
Accrued income taxes payable	9,048	7,032
Asbestos-related liabilities, current portion	5,547	5,547
Other accrued liabilities	24,085	23,789
Total current liabilities	112,692	107,180
Borrowings under revolving credit facility	195,482	228,482
Pension and other postretirement benefits liabilities	1,739	1,739
Asbestos-related liabilities, non-current portion	65,226	64,799
Non-current income tax	8,554	8,418
Deferred income taxes	10,768	10,806
Other long-term liabilities	15,378	9,596
Commitments and contingencies (Note 13)
Shareholders’ equity
Capital stock - $1 par value; 50,000 authorized shares; 18,559 and 18,395 shares issued and outstanding	18,559	18,395
Additional paid-in capital	131,836	132,360
Retained earnings	829,075	776,403
Accumulated other comprehensive loss	(81,956)	(78,834)
Total shareholders' equity	897,514	848,324
Total liabilities and shareholders' equity	$ 1,307,353	$ 1,279,344

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CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 1,215	$ 1,354
Property, plant and equipment, accumulated depreciation	$ 331,553	$ 317,414
Capital Stock, par value (in dollars per share)	$ 1	$ 1
Capital Stock, authorized shares (shares)	50,000,000	50,000,000
Capital Stock, shares issued (shares)	18,559,000	18,395,000
Capital Stock, shares outstanding (shares)	18,559,000	18,395,000

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating Activities:
Net income	$ 52,692	$ 43,465
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	25,099	22,084
Equity compensation expense	6,143	5,814
Deferred income taxes	(2,536)	3,879
Equity in undistributed income of unconsolidated joint ventures	(2,579)	(2,811)
Dividends received from unconsolidated joint ventures	1,741	1,809
Pension and other postretirement benefits	(346)	(796)
Asbestos-related charges	67	0
Loss (gain) on sale or disposal of property, plant and equipment	276	(383)
Impairment charges	956	0
Benefit for doubtful accounts	(128)	(190)
Changes in assets and liabilities:
Accounts receivable	(12,747)	(9,446)
Contract assets	(2,845)	(21,933)
Inventories	(2,845)	(6,489)
Pension and postretirement benefit contributions	(11)	(338)
Other current assets	(1,211)	(1,299)
Accounts payable and other accrued expenses	3,653	(13,835)
Other, net	2,122	3,287
Net cash provided by operating activities	67,501	22,818
Investing Activities:
Capital expenditures	(24,026)	(20,177)
Proceeds from the sale of property, plant and equipment, net	9	1,027
Return of capital from unconsolidated joint ventures	2,625	0
Net cash used in investing activities	(21,392)	(19,150)
Financing Activities:
Repayment of debt principal and finance lease obligations	(33,196)	(291)
Payments of taxes related to net share settlement of equity awards	(7,424)	(6,427)
Proceeds from the exercise of stock options, net	327	698
Proceeds from issuance of shares to employee stock purchase plan	594	558
Share repurchases	0	(2,999)
Net cash used in financing activities	(39,699)	(8,461)
Effect of exchange rate fluctuations on cash	(1,080)	(1,666)
Net increase (decrease) in cash and cash equivalents	5,330	(6,459)
Cash and cash equivalents at beginning of period	167,738	181,159
Cash and cash equivalents at end of period	173,068	174,700
Supplemental Disclosures:
Accrued capital additions	2,119	1,881
Interest, net of amounts capitalized	4,440	2,631
Income taxes	$ 9,164	$ 14,040

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CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Capital Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Balance, beginning of period at Dec. 31, 2017		$ 18,255	$ 128,933	$ 684,540	$ (65,155)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for vested restricted stock units, net of cancellations for tax withholding		113	(6,540)
Stock options exercised		18	680
Shares issued for employee stock purchase plan		6	552
Shares issued to directors		11	(11)
Shares repurchased	$ (3,000)	(23)	(2,976)
Equity compensation expense			5,814
Net income	43,465			43,465
Other comprehensive income (loss)	(7,109)				(7,109)
Balance, end of period at Jun. 30, 2018	804,785	18,380	126,452	732,217	(72,264)
Balance, beginning of period at Mar. 31, 2018		18,365	123,104	714,888	(57,334)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for vested restricted stock units, net of cancellations for tax withholding		0	(20)
Stock options exercised		7	218
Shares issued for employee stock purchase plan		0	17
Shares issued to directors		8	(8)
Shares repurchased	(3,000)	0	0
Equity compensation expense			3,141
Net income	17,329			17,329
Other comprehensive income (loss)	(14,930)				(14,930)
Balance, end of period at Jun. 30, 2018	804,785	18,380	126,452	732,217	(72,264)
Balance, beginning of period at Dec. 31, 2018	848,324	18,395	132,360	776,403	(78,834)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for vested restricted stock units, net of cancellations for tax withholding		137	(7,561)
Stock options exercised		10	317
Shares issued for employee stock purchase plan		7	587
Shares issued to directors		10	(10)
Shares repurchased		0	0
Equity compensation expense			6,143
Net income	52,692			52,692
Other comprehensive income (loss)	(3,122)				(3,122)
Balance, end of period at Jun. 30, 2019	897,514	18,559	131,836	829,075	(81,956)
Balance, beginning of period at Mar. 31, 2019		18,546	128,417	804,782	(83,423)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued for vested restricted stock units, net of cancellations for tax withholding		4	(288)
Stock options exercised		2	40
Shares issued for employee stock purchase plan		0	7
Shares issued to directors		7	(7)
Shares repurchased		0	0
Equity compensation expense			3,667
Net income	24,293			24,293
Other comprehensive income (loss)	1,467				1,467
Balance, end of period at Jun. 30, 2019	$ 897,514	$ 18,559	$ 131,836	$ 829,075	$ (81,956)

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Basis of Presentation

6 Months Ended

Jun. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Note 1 – 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.

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 year ended December 31, 2018.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note 2 – 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, including foreign currency contracts, copper derivative contracts and interest rate swaps. Derivative instruments measured at fair value on a recurring basis, categorized by the level of inputs used in the valuation, include:

	Derivative Instruments at Fair Value as of June 30, 2019
(Dollars in thousands)	Level 1		Level 2			Level 3		Total
Foreign currency contracts	$	—	$	(184	)	$	—	$	(184	)
Copper derivative contracts	$	—	$	762		$	—	$	762
Interest rate swap	$	—	$	(1,284	)	$	—	$	(1,284	)

	Derivative Instruments at Fair Value as of December 31, 2018
(Dollars in thousands)	Level 1		Level 2		Level 3		Total
Foreign currency contracts	$	—	$	522	$	—	$	522
Copper derivative contracts	$	—	$	583	$	—	$	583
Interest rate swap	$	—	$	461	$	—	$	461

For further discussion on our derivative contracts, refer to “Note 3 – Hedging Transactions and Derivative Financial Instruments.”

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Hedging Transactions and Derivative Financial Instruments

6 Months Ended

Jun. 30, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Hedging Transactions and Derivative Financial Instruments

Note 3 – Hedging Transactions and Derivative Financial Instruments

We are exposed to certain risks related to our ongoing business operations. The primary risks being managed through our use of derivative instruments are foreign currency exchange rate risk and commodity pricing risk (primarily related to copper). During 2017, we entered into an interest rate swap to hedge interest rate risk. 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, which are collectively a function of five primary variables: price of the underlying instrument, time to expiration, strike price, interest rate and volatility. 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 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.

• Interest Rates - The fair value of interest rate swap instruments is derived by comparing the present value of the interest rate forward curve against the present value of the swap rate, relative to the notional amount of the swap. The net value represents the estimated amount we would receive or pay to terminate the agreements. Settlement amounts for an “in the money” swap would be adjusted down to compensate the counterparty for cost of funds, and the adjustment is directly related to the counterparties’ credit ratings.

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 as cash flow hedges (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. As of June 30, 2019 and 2018, only our interest rate swap qualified for hedge accounting treatment as a cash flow hedge, and the hedge was highly effective.

Foreign Currency

During the three months ended June 30, 2019, we entered into Chinese Renminbi, Korean Won and Euro forward contracts. We entered into these foreign currency forward contracts to mitigate certain global transactional exposures. These contracts do not qualify for hedge accounting treatment. As a result, any fair value adjustments required on these contracts are recorded in “Other income (expense), net” in our condensed consolidated statements of operations in the period in which the adjustment occurred.

As of June 30, 2019, the notional values of the remaining foreign currency forward contracts were:

Notional Values of Foreign Currency Derivatives
USD/CNY	$	33,351,869
KRW/USD	₩	4,620,000,000
EUR/USD	€	8,750,874

Commodity

As of June 30, 2019, we had 26 outstanding contracts to hedge exposure related to the purchase of copper in our Power Electronics Solutions (PES) and Advanced Connectivity Solutions (ACS) operating segments. These contracts are held with financial institutions and are intended to offset rising copper prices and do not qualify for hedge accounting treatment. As a result, any fair value adjustments required on these contracts are recorded in “Other income (expense), net” in our condensed consolidated statements of operations in the period in which the adjustment occurred. As of June 30, 2019, the volume of our copper contracts outstanding was as follows:

Volume of Copper Derivatives
July 2019 - September 2019	191 metric tons per month
October 2019 - December 2019	195 metric tons per month
January 2020 - March 2020	202 metric tons per month
April 2020 - June 2020	202 metric tons per month
July 2020 - September 2020	201 metric tons per month

Interest Rates

In March 2017, we entered into an interest rate swap to hedge the variable interest rate on $75.0 million of our $450.0 million revolving credit facility. This transaction has been designated as a cash flow hedge and qualifies for hedge accounting treatment. For additional information regarding our revolving credit facility, refer to “Note 10 – Debt.”

Effects on Financial Statements

(Dollars in thousands)		The Effect of Current Derivative Instruments on the Financial Statements for the Period Ended June 30, 2019						Fair Values of Derivative Instruments as of June 30, 2019
		Gain (Loss)						Other Assets/ (Other Liabilities)(1)
	Location	Three Months Ended			Six Months Ended
Foreign Currency Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	125		$	(586	)	$	(184	)
Copper Derivative Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	(775	)	$	(465	)	$	762
Interest Rate Swap
Contract designated as hedging instrument	Other comprehensive income (loss)	$	(1,113	)	$	(1,745	)	$	(1,284	)

(Dollars in thousands)		The Effect of Current Derivative Instruments on the Financial Statements for the Period Ended June 30, 2018						Fair Values of Derivative Instruments as of June 30, 2018
		Gain (Loss)						Other Assets/(Other Liabilities)(1)
	Location	Three Months Ended			Six Months Ended
Foreign Currency Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	(60	)	$	(124	)	$	118
Copper Derivative Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	(363	)	$	(1,185	)	$	827
Interest Rate Swap
Contract designated as hedging instrument	Other comprehensive income (loss)	$	410		$	1,399		$	1,439

⁽¹⁾ All balances were recorded in the “Other current assets” or “Other accrued liabilities” line items in the consolidated statements of financial position, except the 2019 interest rate swap balance, which was recorded in the “Other long-term liabilities” line item in the condensed consolidated statements of financial position.

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Accumulated Other Comprehensive Loss

6 Months Ended

Jun. 30, 2019

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Accumulated Other Comprehensive Loss

Note 4 – Accumulated Other Comprehensive Loss

The changes in accumulated other comprehensive loss by component for the six months ended June 30, 2019 and 2018 were as follows:

(Dollars and accompanying footnotes in thousands)	Foreign Currency Translation Adjustments			Pension and Other Postretirement Benefits(1)			Derivative Instrument Designated as Cash Flow Hedge(2)			Total
Balance as of December 31, 2018	$	(30,488	)	$	(48,700	)	$	354		$	(78,834	)
Other comprehensive income (loss) before reclassifications	(2,075		)	—			(1,204		)	(3,279		)
Amounts reclassified from accumulated other comprehensive loss	—			313			(156		)	157
Net current-period other comprehensive income (loss)	(2,075		)	313			(1,360		)	(3,122		)
Balance as of June 30, 2019	$	(32,563	)	$	(48,387	)	$	(1,006	)	$	(81,956	)
Balance as of December 31, 2017	$	(17,983	)	$	(47,198	)	$	26		$	(65,155	)
Other comprehensive income (loss) before reclassifications	(8,293		)	—			1,153			(7,140		)
Amounts reclassified from accumulated other comprehensive loss	—			87			(56		)	31
Net current-period other comprehensive income (loss)	(8,293		)	87			1,097			(7,109		)
Balance as of June 30, 2018	$	(26,276	)	$	(47,111	)	$	1,123		$	(72,264	)

⁽¹⁾ Net of tax benefits of $9,893 and $9,984 as of June 30, 2019 and December 31, 2018, respectively. Net of tax benefits of $9,536 and $9,563 as of June 30, 2018 and December 31, 2017, respectively.

⁽²⁾ Net of tax benefits (expenses) of $278 and ($106) as of June 30, 2019 and December 31, 2018, respectively. Net of tax benefits (expenses) of ($316) and ($15) as of June 30, 2018 and December 31, 2017, respectively.

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Acquisitions

6 Months Ended

Jun. 30, 2019

Business Combinations [Abstract]

Acquisitions

Note 5 – Acquisitions

Griswold LLC

On July 6, 2018, we acquired 100% of the membership interests in Griswold LLC (Griswold) for an aggregate purchase price of $78.0 million, net of cash acquired.

Pro Forma Financial Information

The following unaudited pro forma financial information presents the combined results of operations of Rogers and Griswold as if the Griswold acquisition had occurred on January 1, 2017. The unaudited pro forma financial information is not intended to represent or be indicative of our consolidated results of operations that would have been reported had the Griswold acquisition been completed as of January 1, 2017, and should not be taken as indicative of our future consolidated results of operations.

	Three Months Ended		Six Months Ended
(Dollars in thousands)	June 30, 2018		June 30, 2018
Net sales	$	222,350	$	444,073
Net income	16,554		42,436

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Inventories

6 Months Ended

Jun. 30, 2019

Inventory Disclosure [Abstract]

Inventories

Note 6 – Inventories

Inventories are valued at the lower of cost or net realizable value. Inventories consisted of the following:

(Dollars in thousands)	June 30, 2019		December 31, 2018
Raw materials	$	63,931	$	59,321
Work-in-process	31,646		30,086
Finished goods	39,490		43,230
Total inventories	$	135,067	$	132,637

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Goodwill and Other Intangible Assets

6 Months Ended

Jun. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Note 7 – Goodwill and Other Intangible Assets

Goodwill

The changes in the carrying amount of goodwill from December 31, 2018 to June 30, 2019 by operating segment, were as follows:

(Dollars in thousands)	Advanced Connectivity Solutions		Elastomeric Material Solutions			Power Electronics Solutions			Other		Total
December 31, 2018	$	51,693	$	142,589		$	68,379		$	2,224	$	264,885
Foreign currency translation adjustment	—		(538		)	(543		)	—		(1,081		)
June 30, 2019	$	51,693	$	142,051		$	67,836		$	2,224	$	263,804

Other Intangible Assets

The gross carrying amount, accumulated amortization and net carrying amount of other intangible assets as of June 30, 2019 and December 31, 2018 by classification type, were as follows:

	June 30, 2019						December 31, 2018
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	$	149,496	$	34,508	$	114,988	$	149,753	$	30,078	$	119,675
Technology	81,273		41,943		39,330		81,535		38,624		42,911
Trademarks and trade names	11,995		3,779		8,216		12,019		3,213		8,806
Covenants not to compete	1,340		377		963		1,340		249		1,091
Total definite-lived other intangible assets	244,104		80,607		163,497		244,647		72,164		172,483
Indefinite-lived other intangible asset	4,488		—		4,488		4,525		—		4,525
Total other intangible assets	$	248,592	$	80,607	$	167,985	$	249,172	$	72,164	$	177,008

In the table above, gross 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, 2019 was approximately $4.4 million and $8.9 million, respectively. Amortization expense for the three and six months ended June 30, 2018 was approximately $3.8 million and $7.7 million, respectively. The estimated future amortization expense is $8.9 million for the remainder of 2019 and $14.6 million, $13.8 million, $13.3 million and $12.7 million for 2020, 2021, 2022 and 2023, respectively.

The weighted average amortization period as of June 30, 2019, by definite-lived other intangible asset class, is presented in the table below:

Definite-Lived Other Intangible Asset Class	Weighted Average Remaining Amortization Period
Customer relationships	7.4 years
Technology	4.2 years
Trademarks and trade names	4.9 years
Covenants not to compete	1.8 years
Total definite-lived other intangible assets	6.5 years

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Earnings Per Share

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Earnings Per Share

Note 8 – Earnings Per Share

Basic earnings per share is based on the weighted average number of common shares outstanding. Diluted earnings per share is based on the weighted average number of common shares outstanding and all dilutive potential common shares outstanding.

The following table sets forth the computation of basic and diluted earnings per share for the periods indicated:

(In thousands, except per share amounts)	Three Months Ended				Six Months Ended
	June 30, 2019		June 30, 2018		June 30, 2019		June 30, 2018
Numerator:
Net income	$	24,293	$	17,329	$	52,692	$	43,465
Denominator:
Weighted-average shares outstanding - basic	18,568		18,389		18,562		18,338
Effect of dilutive shares	162		271		149		297
Weighted-average shares outstanding - diluted	18,730		18,660		18,711		18,635
Basic earnings per share	$	1.31	$	0.94	$	2.84	$	2.37
Diluted earnings per share	$	1.30	$	0.93	$	2.82	$	2.33

Dilutive shares are calculated using the treasury stock method and primarily include unvested restricted stock units. Anti-dilutive shares are excluded from the calculation of diluted shares and diluted earnings per share. For the three months ended June 30, 2019 and 2018, 6,256 shares and 27,145 shares were excluded, respectively.

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Capital Stock and Equity Compensation

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement, Noncash Expense [Abstract]

Capital Stock and Equity Compensation

Note 9 – Capital Stock and Equity Compensation

Equity Compensation

Performance-Based Restricted Stock Units

As of June 30, 2019, we had performance-based restricted stock units from 2019, 2018 and 2017 outstanding. These awards generally cliff vest at the end of a three year measurement period. However, 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 measurement period. Participants are eligible to be awarded shares ranging from 0% to 200% of the original award amount, based on certain defined performance measures.

The outstanding awards have one measurement criterion: the three year total shareholder return (TSR) on our capital stock as compared to that of a specified group of peer companies. The TSR measurement criterion of the awards is considered a market condition. As such, the fair value of this measurement criterion was determined on the grant date using a Monte Carlo simulation valuation model. We recognize compensation expense on all of these awards on a straight-line basis over the vesting period with no changes for final projected payout of the awards. We account for forfeitures as they occur.

Below are the assumptions used in the Monte Carlo calculation on the respective grant dates for awards granted in 2019 and 2018:

	June 3, 2019	February 7, 2019	September 17, 2018	February 8, 2018
Expected volatility	39.7%	36.7%	36.6%	34.8%
Expected term (in years)	2.6	2.9	3.0	3.0
Risk-free interest rate	1.78%	2.43%	2.85%	2.28%

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.

The following table summarizes the change in number of performance-based restricted stock units outstanding for the six months ended June 30, 2019:

	Performance-Based Restricted Stock Units
Awards outstanding as of December 31, 2018	142,434
Awards granted	111,087
Stock issued	(131,650	)
Awards forfeited	(11,549	)
Awards outstanding as of June 30, 2019	110,322

We recognized $1.1 million and $2.0 million of compensation expense for performance-based restricted stock units during the three and six months ended June 30, 2019, respectively. We recognized $0.8 million and $1.8 million of compensation expense for performance-based restricted stock units during the three and six months ended June 30, 2018, respectively.

Time-Based Restricted Stock Units

As of June 30, 2019, we had time-based restricted stock unit awards from 2019, 2018, 2017 and 2016 outstanding. The outstanding awards all ratably vest on the first, second and third anniversaries of the original grant date. However, 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 subsequent to the last grant anniversary date. Each time-based restricted stock unit represents a right to receive one share of Rogers’ capital stock at the end of the vesting period. The fair value of the award is determined by the market value of the underlying stock price at the grant date. We recognize compensation expense on all of these awards on a straight-line basis over the vesting period. We account for forfeitures as they occur.

A summary of activity of the outstanding time-based restricted stock units for the six months ended June 30, 2019 is presented below:

	Time-Based Restricted Stock Units
Awards outstanding as of December 31, 2018	117,476
Awards granted	59,561
Stock issued	(64,536	)
Awards forfeited	(7,596	)
Awards outstanding as of June 30, 2019	104,905

We recognized $1.4 million and $2.9 million of compensation expense for time-based restricted stock units during the three and six months ended June 30, 2019, respectively. We recognized $1.3 million and $2.9 million of compensation expense for time-based restricted stock units during the three and six months ended June 30, 2018, 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’ capital 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 by the market value of the underlying stock price at the grant date.

The following table summarizes the change in number of deferred stock units outstanding during the six months ended June 30, 2019:

	Deferred Stock Units
Awards outstanding as of December 31, 2018	8,400
Awards granted	5,950
Stock issued	(7,200	)
Awards outstanding as of June 30, 2019	7,150

We recognized $1.1 million of compensation expense related to deferred stock units for the three and six months ended June 30, 2019, and $0.9 million of compensation expense for the three and six months ended June 30, 2018.

Stock Options

Stock options have been granted under various equity compensation plans. The maximum contractual term for all options is normally 10 years. All outstanding options are fully vested and exercisable. We have not granted any stock options since the first quarter of 2012.

During the six months ended June 30, 2019, 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 $1.1 million, and the total amount of cash received from the exercise of these options was $0.3 million.

A summary of the activity under our stock option plans for the six months ended June 30, 2019 is presented below:

	Options Outstanding		Weighted- Average Exercise Price Per Share		Weighted-Average Remaining Contractual Life in Years	Aggregate Intrinsic Value
Options outstanding, vested and exercisable as of December 31, 2018	10,950		$	31.99	2.0	$	734,469
Options exercised	(10,000	)	$	32.74
Options expired	(300	)	$	23.86
Options outstanding, vested and exercisable as of June 30, 2019	650		$	24.20	0.6	$	96,447

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 shares of our capital 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 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 an immaterial amount of equity compensation expense associated with the ESPP for each of the three- and six-month periods ended June 30, 2019 and 2018.

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Debt

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Debt

Note 10 – Debt

In 2017, we entered into a secured five year credit agreement with JPMorgan Chase Bank, N.A., as administrative agent, and the lenders party thereto (the Third Amended Credit Agreement), which increased the principal amount of our revolving credit facility to up to $450.0 million borrowing capacity, with sublimits for multicurrency borrowings, letters of credit and swing-line notes, and provided an additional $175.0 million accordion 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 Third Amended Credit Agreement).

In 2018, we borrowed $82.5 million under our revolving credit facility to fund the acquisition of Griswold and an additional $20.0 million to fund the Rogers Corporation Defined Benefit Pension Plan (Merged Plan) as part of the proposed plan termination process.

Borrowings under the Third Amended Credit Agreement can be made as alternate base rate loans or euro-currency loans. Alternate base rate loans bear interest at 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 (or the overnight bank funding rate, if greater) plus 50 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. Based on our leverage ratio as of June 30, 2019, the spread was 150.0 basis points.

We incurred interest expense on our outstanding debt of $2.1 million, and $1.1 million during the three months ended June 30, 2019 and 2018, respectively, and $4.2 million and $2.0 million during the six months ended June 30, 2019 and 2018, respectively.

In addition to interest payable on the principal amount of indebtedness outstanding from time to time under the Third Amended Credit Agreement, we are required to pay a quarterly fee of 20 to 30 basis points (based upon our leverage ratio) of the unused amount of the lenders’ commitments under the Third Amended Credit Agreement. We incurred immaterial unused commitment fees in each of the three- and six-month periods ended June 30, 2019 and 2018.

The Third Amended Credit Agreement contains customary representations, warranties, covenants, mandatory prepayments and events of default under which our payment obligations may be accelerated. 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. The financial covenants include requirements to maintain (1) a leverage ratio of no more than 3.25 to 1.00, subject to an 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 of no less than 3.00 to 1.00.

All obligations under the Third Amended Credit Agreement are guaranteed by each of our existing and future material domestic subsidiaries, as defined in the Third Amended Credit Agreement (the Guarantors). The obligations are also secured by a Third Amended and Restated Pledge and Security Agreement, dated as of February 17, 2017, entered into by us and the Guarantors which 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 Guarantors. These assets include, but are not limited to, receivables, equipment, intellectual property, inventory, and stock in certain subsidiaries.

All revolving loans are due on the maturity date, February 17, 2022. We are not required to make any quarterly principal payments under the Third Amended Credit Agreement, and as of June 30, 2019 we had $195.5 million in outstanding borrowings under our revolving credit facility. However, we made discretionary principal payments totaling $33.0 million on our revolving credit facility during the six months ended June 30, 2019.

As of June 30, 2019, we had $1.4 million of outstanding line of credit issuance costs that will be amortized over the life of the Third Amended Credit Agreement. We recognized an immaterial amount of amortization expense for each of the three- and six-month periods ended June 30, 2019 and 2018, related to these deferred costs.

In March 2017, we entered into an interest rate swap to hedge the variable interest rate on $75.0 million of our $450.0 million revolving credit facility. For further information regarding the interest rate swap, refer to “Note 3 – Hedging Transactions and Derivative Financial Instruments.”

Restriction on Payment of Dividends

Our Third 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 2.75 to 1.00. If our leverage ratio exceeds 2.75 to 1.00, we may nonetheless make up to $20.0 million in restricted payments, including cash dividends, during the fiscal year, provided that no default or event of default has occurred and is continuing or would result from the payments. Our leverage ratio did not exceed 2.75 to 1.00 as of June 30, 2019.

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Leases

6 Months Ended

Jun. 30, 2019

Leases [Abstract]

Leases

Note 11 - Leases

We have a finance lease obligation related to our manufacturing facility in Eschenbach, Germany. Under the terms of the lease 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. Our finance lease obligation related to this facility was $4.8 million and $5.0 million as of June 30, 2019 and December 31, 2018, respectively. The finance lease right-of-use asset balance for this facility was $6.5 million and $6.7 million as of June 30, 2019 and December 31, 2018, respectively. All other finance lease obligations and finance lease right-of-use assets were cumulatively immaterial as of June 30, 2019 and December 31, 2018. Accumulated amortization related to our finance lease right-of-use assets was $3.7 million and $3.5 million as of June 30, 2019 and December 31, 2018, respectively.

Amortization expense related to our finance lease right-of-use assets, which is primarily included in the “Cost of sales” line item of the condensed consolidated statements of operations, was immaterial for each of the three- and six-month periods ended June 30, 2019 and 2018. Interest expense related to our finance lease obligations, which is included in the “Interest expense, net” line item of the condensed consolidated statements of operations, was immaterial for each of the three- and six-month periods ended June 30, 2019 and 2018. Payments made on the principal portion of our finance lease obligations were immaterial for each of the three-and six-month periods ended June 30, 2019 and 2018.

We have operating leases primarily related to building space and vehicles. Renewal options are included in the lease term to the extent we are reasonably certain to exercise the option. The exercise of lease renewal options is at our sole discretion. We account for lease components separately from non-lease components. The incremental borrowing rate represents our ability to borrow on a collateralized basis over a similar lease term.

The following table includes our expenses and payments for operating leases for the three and six months ended June 30, 2019:

(Dollars in thousands)	Three Months Ended	Six Months Ended
	June 30, 2019	June 30, 2019
Operating leases expense	775	1,493
Short-term leases expense	43	82
Payments on operating lease obligations	760	1,524

As of June 30, 2019 and December 31, 2018, our assets and liabilities balances related to finance and operating leases were as follows:

(Dollars in thousands)	Location in Statements of Financial Position	June 30, 2019		December 31, 2018
Finance lease right-of-use assets	Property, plant and equipment, net	$	6,529	$	6,750
Operating lease right-of-use assets	Other long-term assets	$	6,285	$	—
Finance lease obligations, current portion	Other accrued liabilities	$	420	$	420
Finance lease obligations, non-current portion	Other long-term liabilities	$	4,394	$	4,629
Total finance lease obligations		$	4,814	$	5,049
Operating lease obligations, current portion	Other accrued liabilities	$	2,594	$	—
Operating lease obligations, non-current portion	Other long-term liabilities	$	3,710	$	—
Total operating lease obligations		$	6,304	$	—

Net Future Minimum Lease Payments

The following table includes future minimum lease payments under finance and operating leases together with the present value of the net future minimum lease payments as of June 30, 2019:

(Dollars in thousands)	Finance			Operating
	Leases			Leases Signed			Less: Leases Not Yet Commenced		Leases
2019	$	278		$	1,478		$	—	$	1,478
2020	521			2,713			—		2,713
2021	4,238			1,589			—		1,589
2022	—			822			—		822
2023	—			229			—		229
Thereafter	—			30			—		30
Total Lease Payments	5,037			6,861			—		6,861
Less: Interest	(223		)	(557		)	—		(557		)
Present Value of Net Future Minimum Lease Payments	$	4,814		$	6,304		$	—	$	6,304

The following table includes information regarding the lease term and discount rates utilized in the calculation of the present value of net future minimum lease payments:

	Finance Leases	Operating Leases
Weighted Average Remaining Lease Term	2.0 years	2.7 years
Weighted Average Discount Rate	2.55%	6.09%

Transition

We adopted Accounting Standards Codification (ASC) 842, Leases, in the first quarter of 2019 using the optional transition method, which applies the new lease requirements through a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption without restatement of comparative periods. The guidance was applied to all leases that were not completed at the date of implementation. The adoption primarily affected our condensed consolidated statements of financial position through the recognition of $6.2 million of operating lease right-of-use assets and $6.2 million of operating lease obligations, as well as an immaterial impact to retained earnings, as of January 1, 2019. We recognized an additional $0.1 million of operating lease right-

of-use assets and $0.1 million operating lease obligations during the three months ended June 30, 2019. We recognized an additional $0.8 million of operating lease right-of-use assets and $0.8 million operating lease obligations during the six months ended June 30, 2019. The total operating lease right-of use assets and operating lease obligations recognized was $7.0 million and $7.0 million, respectively.

Practical Expedients

We have elected to recognize lease payments in the condensed consolidated statements of operations on a straight-line basis over the term of the lease for short-term leases. We also elected the package of practical expedients that allows us to carry forward the historical lease classification and accounting for indirect costs for any existing leases.

Leases

Note 11 - Leases

We have a finance lease obligation related to our manufacturing facility in Eschenbach, Germany. Under the terms of the lease 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. Our finance lease obligation related to this facility was $4.8 million and $5.0 million as of June 30, 2019 and December 31, 2018, respectively. The finance lease right-of-use asset balance for this facility was $6.5 million and $6.7 million as of June 30, 2019 and December 31, 2018, respectively. All other finance lease obligations and finance lease right-of-use assets were cumulatively immaterial as of June 30, 2019 and December 31, 2018. Accumulated amortization related to our finance lease right-of-use assets was $3.7 million and $3.5 million as of June 30, 2019 and December 31, 2018, respectively.

Amortization expense related to our finance lease right-of-use assets, which is primarily included in the “Cost of sales” line item of the condensed consolidated statements of operations, was immaterial for each of the three- and six-month periods ended June 30, 2019 and 2018. Interest expense related to our finance lease obligations, which is included in the “Interest expense, net” line item of the condensed consolidated statements of operations, was immaterial for each of the three- and six-month periods ended June 30, 2019 and 2018. Payments made on the principal portion of our finance lease obligations were immaterial for each of the three-and six-month periods ended June 30, 2019 and 2018.

We have operating leases primarily related to building space and vehicles. Renewal options are included in the lease term to the extent we are reasonably certain to exercise the option. The exercise of lease renewal options is at our sole discretion. We account for lease components separately from non-lease components. The incremental borrowing rate represents our ability to borrow on a collateralized basis over a similar lease term.

The following table includes our expenses and payments for operating leases for the three and six months ended June 30, 2019:

(Dollars in thousands)	Three Months Ended	Six Months Ended
	June 30, 2019	June 30, 2019
Operating leases expense	775	1,493
Short-term leases expense	43	82
Payments on operating lease obligations	760	1,524

As of June 30, 2019 and December 31, 2018, our assets and liabilities balances related to finance and operating leases were as follows:

(Dollars in thousands)	Location in Statements of Financial Position	June 30, 2019		December 31, 2018
Finance lease right-of-use assets	Property, plant and equipment, net	$	6,529	$	6,750
Operating lease right-of-use assets	Other long-term assets	$	6,285	$	—
Finance lease obligations, current portion	Other accrued liabilities	$	420	$	420
Finance lease obligations, non-current portion	Other long-term liabilities	$	4,394	$	4,629
Total finance lease obligations		$	4,814	$	5,049
Operating lease obligations, current portion	Other accrued liabilities	$	2,594	$	—
Operating lease obligations, non-current portion	Other long-term liabilities	$	3,710	$	—
Total operating lease obligations		$	6,304	$	—

Net Future Minimum Lease Payments

The following table includes future minimum lease payments under finance and operating leases together with the present value of the net future minimum lease payments as of June 30, 2019:

(Dollars in thousands)	Finance			Operating
	Leases			Leases Signed			Less: Leases Not Yet Commenced		Leases
2019	$	278		$	1,478		$	—	$	1,478
2020	521			2,713			—		2,713
2021	4,238			1,589			—		1,589
2022	—			822			—		822
2023	—			229			—		229
Thereafter	—			30			—		30
Total Lease Payments	5,037			6,861			—		6,861
Less: Interest	(223		)	(557		)	—		(557		)
Present Value of Net Future Minimum Lease Payments	$	4,814		$	6,304		$	—	$	6,304

The following table includes information regarding the lease term and discount rates utilized in the calculation of the present value of net future minimum lease payments:

	Finance Leases	Operating Leases
Weighted Average Remaining Lease Term	2.0 years	2.7 years
Weighted Average Discount Rate	2.55%	6.09%

Transition

We adopted Accounting Standards Codification (ASC) 842, Leases, in the first quarter of 2019 using the optional transition method, which applies the new lease requirements through a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption without restatement of comparative periods. The guidance was applied to all leases that were not completed at the date of implementation. The adoption primarily affected our condensed consolidated statements of financial position through the recognition of $6.2 million of operating lease right-of-use assets and $6.2 million of operating lease obligations, as well as an immaterial impact to retained earnings, as of January 1, 2019. We recognized an additional $0.1 million of operating lease right-

of-use assets and $0.1 million operating lease obligations during the three months ended June 30, 2019. We recognized an additional $0.8 million of operating lease right-of-use assets and $0.8 million operating lease obligations during the six months ended June 30, 2019. The total operating lease right-of use assets and operating lease obligations recognized was $7.0 million and $7.0 million, respectively.

Practical Expedients

We have elected to recognize lease payments in the condensed consolidated statements of operations on a straight-line basis over the term of the lease for short-term leases. We also elected the package of practical expedients that allows us to carry forward the historical lease classification and accounting for indirect costs for any existing leases.

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Pension Benefits and Other Postretirement Benefit Plans

6 Months Ended

Jun. 30, 2019

Defined Benefit Plan [Abstract]

Pension Benefit and Other Postretirement Benefit Plans

Note 12 – Pension Benefits and Other Postretirement Benefit Plans

As of June 30, 2019, we had two qualified noncontributory defined benefit pension plans: 1) the Rogers Corporation Employees’ Pension Plan (the Union Plan) and 2) the Rogers Corporation Defined Benefit Pension Plan for (i) all other U.S. employees hired before December 31, 2007 who are salaried employees or non-union hourly employees and (ii) employees of the acquired Arlon business (the Merged Plan).

The Company also maintains the Rogers Corporation Amended and Restated Pension Restoration Plan effective as of January 1, 2004 and the Rogers Corporation Amended and Restated Pension Restoration Plan effective as of January 1, 2005 (collectively, the Nonqualified Plans). The Nonqualified Plans serve to restore certain retirement benefits that might otherwise be lost due to limitations imposed by federal law on qualified pension plans, as well as to provide supplemental retirement benefits, for certain senior executives of the Company. In addition, we sponsor multiple fully insured or self-funded medical plans and life insurance plans for certain retirees. The measurement date for all plans is December 31^st for each respective plan year.

We are required, as an employer, to: (a) recognize in our consolidated statements of financial position an asset for a plan’s overfunded status or a liability for a plan’s underfunded status; (b) measure a plan’s assets and our obligations that determine our funded status as of the end of the year; and (c) recognize changes in the funded status of a defined benefit postretirement plan in the year in which the changes occur and report these changes in accumulated other comprehensive loss. In addition, actuarial gains and losses that are not immediately recognized as net periodic pension cost are recognized as a component of accumulated other comprehensive loss and amortized into net periodic pension cost in future periods.

Pension Plan Proposed Termination

The Company currently intends to terminate the Merged Plan and has received a determination letter from the Internal Revenue Service (IRS). On June 10, 2019, the Company amended the Plan to (a) terminate the Plan (subject to discretionary approval by the Company’s Chief Executive Officer) and (b) add a lump sum distribution option in connection with the termination of the Plan, if approved. The Company plans to provide participants an option to elect either a lump sum distribution or an annuity. One or more group annuity contracts with one or more insurance companies will be purchased to settle our obligations for those participants who do not receive a lump sum. The Merged Plan is fully-funded on a GAAP basis, however, in order to terminate the plan in accordance with IRS and Pension Benefit Guaranty Corporation requirements, the Company will be required to contribute additional assets, if necessary, to settle all of the Merged Plan’s obligations. The amount necessary to do so is not yet known. In addition, the Company expects to record a pension settlement charge at plan termination. This settlement charge will include, as a non-cash charge, the immediate recognition into expense of the unrecognized losses within accumulated other comprehensive loss on the statement of financial position as of the plan termination date. The Company does not have a current estimate of these future charges, however, the pre-tax accumulated other comprehensive loss related to the Merged Plan was approximately $47 million as of June 30, 2019. We currently estimate that if the plan termination is approved by the Chief Executive Officer, it will be completed during the second half of 2019, when lump sum distributions are expected to occur and one or more annuity contracts are expected to be purchased. At this time, there are no plans to terminate the Union Plan.

Components of Net Periodic (Benefit) Cost

The components of net periodic (benefit) cost for the periods indicated were:

	Pension Benefits												Retirement Health and Life Insurance Benefits
(Dollars in thousands)	Three Months Ended						Six Months Ended						Three Months Ended						Six Months Ended
	June 30,						June 30,						June 30,						June 30,
	2019			2018			2019			2018			2019			2018			2019			2018
Service cost	$	—		$	—		$	—		$	—		$	18		$	17		$	36		$	38
Interest cost	1,785			1,692			3,569			3,372			15			16			30			31
Expected return of plan assets	(2,192		)	(2,164		)	(4,384		)	(4,333		)	—			—			—			—
Amortization of prior service credit	—			—			—			—			(253		)	(400		)	(506		)	(801		)
Amortization of net loss	456			457			910			913			—			—			—			—
Net periodic cost (benefit)	$	49		$	(15	)	$	95		$	(48	)	$	(220	)	$	(367	)	$	(440	)	$	(732	)

Employer Contributions

There were no required contributions to our qualified defined benefit pension plans for the three- or six-month periods ended June 30, 2019 and 2018, and we are not required to make additional contributions to these plans for the remainder of 2019. No voluntary contributions were made to our qualified defined benefit pension plans for each of the three- and six-month periods ended June 30, 2019 and 2018.

As there is no funding requirement for the Nonqualified Plans or the Retiree Health and Life Insurance benefit plans, we fund the amount of benefit payments made during the year, which were immaterial for each of the three- and six-month periods ended June 30, 2019 and 2018.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 13 – Commitments and Contingencies

We are currently engaged in the following environmental and legal proceedings:

Voluntary Corrective Action Program

Our location 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. Remediation activities on the site are ongoing and are recorded as reductions to the accrual as they are incurred. We incurred an immaterial amount of aggregate remediation costs through June 30, 2019, and the accrual for future remediation efforts is $1.6 million.

Asbestos

Overview

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 summarizes the change in number of asbestos claims outstanding during the six months ended June 30, 2019:

	Asbestos Claims
Claims outstanding as of December 31, 2018	745
New claims filed	165
Pending claims concluded(1)	(106	)
Claims outstanding as of June 30, 2019	804

⁽¹⁾For the six months ended June 30, 2019, 98 claims were dismissed and 8 claims were settled. Settlements totaled approximately $0.7 million for the six months ended June 30, 2019.

Impact on Financial Statements

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.

The liability projection period covers all current and future claims through 2058, which represents the expected end of our asbestos liability exposure with no further ongoing claims expected beyond that date. This conclusion was based on our history and experience with the claims data, the diminished volatility and consistency of observable claims data, the period of time that has elapsed since we stopped manufacturing products that contained encapsulated asbestos and an expected downward trend in claims due to the average age of our claimants, which is approaching the average life expectancy.

To date, the defense and settlement costs of our asbestos-related product liability litigation have been substantially covered by insurance. Although we have exhausted coverage under some of our insurance policies, we believe that we have applicable primary, excess and/or umbrella coverage for claims arising with respect to most of the years during which we manufactured and marketed asbestos-containing products. 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 covered 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, and no carrier had informed us it intended to terminate the agreement. We expect to continue 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. We are responsible for uninsured defense, indemnity and settlement costs, and we incurred an immaterial amount of expenses for each of the three- and six-month periods ended June 30, 2019 and 2018, respectively, related primarily to such costs.

The amounts recorded for the asbestos-related liability and the related insurance receivables are 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.

As of June 30, 2019 and December 31, 2018, our projected asbestos-related claims and insurance receivables were as follows:

(Dollars in millions)	June 30, 2019		December 31, 2018
Asbestos-related claims	$	70.8	$	70.3
Asbestos-related insurance receivables	$	64.4	$	63.8

General

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 will have a material adverse impact on our results of operations, financial position or cash flows.

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Income Taxes

6 Months Ended

Jun. 30, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Note 14 – Income Taxes

Our effective income tax rate was 22.9% and 32.6% for the three months ended June 30, 2019 and 2018, respectively. The decrease from the second quarter of 2018 was primarily due to the beneficial impact of the international tax provisions from U.S. tax reform as a result of administrative guidance issued during the second half of 2018, changes in valuation allowance related to R&D credits and a lower tax impact on unremitted foreign earnings and profits. Our effective income tax rate was 18.5% and 23.2% for the six months ended June 30, 2019 and 2018, respectively. The decrease from the first half of 2018 was primarily due to the beneficial impact of the international tax provisions from U.S. tax reform as a result of administrative guidance issued during the second half of 2018 and a lower tax impact on unremitted foreign earnings and profits, partially offset by a decrease in current year release of reserves for uncertain tax positions.

The total amount of unrecognized tax benefits as of June 30, 2019 was $9.8 million, of which $9.6 million would affect our effective tax rate if recognized. It is reasonably possible that approximately $1.4 million of our unrecognized tax benefits as of June 30, 2019 will reverse within the next 12 months.

We recognize interest and penalties related to unrecognized tax benefits through income tax expense. As of June 30, 2019, we had $0.6 million accrued for the payment of interest.

We are subject to taxation in the U.S. and various state and foreign jurisdictions. With few exceptions, we are no longer subject to examinations by tax authorities for years prior to 2014.

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Segment Information

6 Months Ended

Jun. 30, 2019

Segment Reporting [Abstract]

Segment Information

Note 15 – Segment Information

Our reporting structure is comprised of the following strategic operating segments: ACS, EMS and PES. The remaining operations, which represent our non-core businesses, are reported in the Other operating segment. We believe this structure aligns our external reporting presentation with how we currently manage and view our business internally.

On January 1, 2018, we adopted Accounting Standards Update (ASU) 2014-09, Revenue from Contracts with Customers. For additional information regarding the impacts of this accounting guidance, refer to “Note 16 – Revenue from Contracts with Customers.” We sell products to fabricators and distributors who then sell directly into various end markets. End markets within our ACS operating segment include wireless infrastructure, aerospace and defense, automotive, connected devices, wired infrastructure and consumer electronics. End markets within our EMS operating segment include portable electronics, mass transit, automotive, consumer and general industrial. End markets within our PES operating segment include e-mobility, industrial, renewable energy, mass transit, and micro channel coolers. End markets in our Other operating segment include automotive and industrial.

The following table presents a disaggregation of revenue from contracts with customers and other pertinent financial information, for the periods indicated; inter-segment sales have been eliminated from the net sales data:

(Dollars in thousands)	Advanced Connectivity Solutions		Elastomeric Material Solutions		Power Electronics Solutions			Other		Total
Three Months Ended June 30, 2019
Net sales - recognized over time	$	—	$	2,965	$	51,319		$	4,313	$	58,597
Net sales - recognized at a point in time	92,529		90,929		343			454		184,255
Total net sales	$	92,529	$	93,894	$	51,662		$	4,767	$	242,852
Operating income	$	18,458	$	15,326	$	(1,884	)	$	1,313	$	33,213
Three Months Ended June 30, 2018
Net sales - recognized over time	$	—	$	907	$	53,052		$	4,616	$	58,575
Net sales - recognized at a point in time	76,376		78,309		595			820		156,100
Total net sales	$	76,376	$	79,216	$	53,647		$	5,436	$	214,675
Operating income	$	10,594	$	8,421	$	4,239		$	1,970	$	25,224
Six Months Ended June 30, 2019
Net sales - recognized over time	$	—	$	5,971	$	110,921		$	8,917	$	125,809
Net sales - recognized at a point in time	172,999		180,685		555			2,602		356,841
Total net sales	$	172,999	$	186,656	$	111,476		$	11,519	$	482,650
Operating income	$	31,522	$	28,757	$	2,383		$	3,351	$	66,013
Six Months Ended June 30, 2018
Net sales - recognized over time	$	—	$	1,941	$	110,451		$	9,265	$	121,657
Net sales - recognized at a point in time	149,831		155,358		909			1,531		307,629
Total net sales	$	149,831	$	157,299	$	111,360		$	10,796	$	429,286
Operating income	$	18,496	$	22,581	$	11,260		$	3,932	$	56,269

Information relating to our segment operations by geographic area for the three months ended June 30, 2019 and 2018 was as follows:

(Dollars in thousands)	Net Sales (1)
Region/Country	Advanced Connectivity Solutions		Elastomeric Material Solutions		Power Electronics Solutions		Other		Total
June 30, 2019
United States	$	16,272	$	41,370	$	8,208	$	1,079	$	66,929
Other Americas	1,039		2,190		229		206		3,664
Total Americas	17,311		43,560		8,437		1,285		70,593
China	49,333		23,846		11,283		953		85,415
Other APAC	17,026		15,534		6,625		760		39,945
Total APAC	66,359		39,380		17,908		1,713		125,360
Germany	3,951		3,471		14,305		130		21,857
Other EMEA	4,908		7,483		11,012		1,639		25,042
Total EMEA	8,859		10,954		25,317		1,769		46,899
Total net sales	$	92,529	$	93,894	$	51,662	$	4,767	$	242,852
June 30, 2018
United States	$	14,447	$	35,777	$	8,279	$	866	$	59,369
Other Americas	758		2,179		323		725		3,985
Total Americas	15,205		37,956		8,602		1,591		63,354
China	32,032		24,071		8,940		1,410		66,453
Other APAC	18,588		8,324		7,092		649		34,653
Total APAC	50,620		32,395		16,032		2,059		101,106
Germany	4,823		2,595		16,524		163		24,105
Other EMEA	5,728		6,270		12,489		1,623		26,110
Total EMEA	10,551		8,865		29,013		1,786		50,215
Total net sales	$	76,376	$	79,216	$	53,647	$	5,436	$	214,675

⁽¹⁾  Net sales are allocated to countries based on the location of the customer. The table above lists individual countries with 10% or more of net sales for the periods indicated.

Information relating to our segment operations by geographic area for the six months ended June 30, 2019 and 2018 was as follows:

(Dollars in thousands)	Net Sales (1)
Region/Country	Advanced Connectivity Solutions		Elastomeric Material Solutions		Power Electronics Solutions		Other		Total
June 30, 2019
United States	$	29,343	$	84,835	$	15,685	$	2,369	$	132,232
Other Americas	1,791		4,273		249		397		6,710
Total Americas	31,134		89,108		15,934		2,766		138,942
China	91,822		46,265		22,347		3,466		163,900
Other APAC	31,167		30,022		11,963		1,569		74,721
Total APAC	122,989		76,287		34,310		5,035		238,621
Germany	8,423		6,907		36,252		276		51,858
Other EMEA	10,453		14,354		24,980		3,442		53,229
Total EMEA	18,876		21,261		61,232		3,718		105,087
Total net sales	$	172,999	$	186,656	$	111,476	$	11,519	$	482,650
June 30, 2018
United States	$	26,725	$	73,469	$	16,857	$	2,123	$	119,174
Other Americas	1,584		3,980		681		555		6,800
Total Americas	28,309		77,449		17,538		2,678		125,974
China	65,539		44,865		18,362		2,727		131,493
Other APAC	33,926		17,484		13,543		1,442		66,395
Total APAC	99,465		62,349		31,905		4,169		197,888
Germany	11,073		5,337		31,234		332		47,976
Other EMEA	10,984		12,164		30,683		3,617		57,448
Total EMEA	22,057		17,501		61,917		3,949		105,424
Total net sales	$	149,831	$	157,299	$	111,360	$	10,796	$	429,286

⁽¹⁾ 

Net sales are allocated to countries based on the location of the customer. The table above lists individual countries with 10% or more of net sales for the periods indicated.

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Revenue from Contracts with Customers

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer

Note 16 – Revenue from Contracts with Customers

Contract Balances

The Company has contract assets primarily related to unbilled revenue for revenue recognized related to products that are deemed to have no alternative use whereby we have the right to payment. Revenue is recognized in advance of billing to the customer in these circumstances as billing is typically performed at the time of shipment to the customer. The unbilled revenue is included in the contract assets on the condensed consolidated statements of financial position.

The Company did not have any contract liabilities as of June 30, 2019 or December 31, 2018.

The following table presents contract assets by operating segment as of June 30, 2019 and December 31, 2018:

(Dollars in thousands)	June 30, 2019		December 31, 2018
Advanced Connectivity Solutions	$	—	$	—
Elastomeric Material Solutions	955		943
Power Electronics Solutions	22,652		19,738
Other	1,966		2,047
Total contract assets	$	25,573	$	22,728

No impairment losses were recognized for each of the three- and six-month periods ended June 30, 2019 and 2018 on any receivables or contract assets arising from our contracts with customers.

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Restructuring and Impairment Charges

6 Months Ended

Jun. 30, 2019

Restructuring and Related Activities [Abstract]

Restructuring and Impairment Charges

Note 17 – Restructuring and Impairment Charges

In 2018, we made the decision to consolidate our Santa Fe Springs, California operations into the Company’s facilities in Carol Stream, Illinois and Bear, Delaware. We recorded $0.1 million and $0.9 million of expense for the three and six months ended

June 30, 2019, respectively, related to the facility consolidation. We recorded $0.5 million of expense related to this project in the three and six months ended June 30, 2018, respectively. The fair value of the total severance benefits paid in connection with the facility consolidation was $0.5 million. The total severance costs were expensed ratably over the required service period for the affected employees. All severance expenses were recorded as of December 31, 2018, and the final severance payments were made in the first quarter of 2019.

The following table presents severance activity related to the facility consolidation for the six months ended June 30, 2019:

(Dollars in thousands)	Severance Related to Facility Consolidation
Balance as of December 31, 2018	$	523
Provisions	—
Payments	(523		)
Balance as of June 30, 2019	$	—

We recognized $0.9 million and $1.0 million in impairment charges on certain assets in connection with the Isola USA Corp. (Isola) asset acquisition for the three and six months ended June 30, 2019, respectively.

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Supplemental Financial Information

6 Months Ended

Jun. 30, 2019

Supplemental Income Statement Elements [Abstract]

Supplemental Financial Information

Note 18 – Supplemental Financial Information

The components of “Other operating (income) expense, net” are as follows:

	Three Months Ended						Six Months Ended
(Dollars in thousands)	June 30, 2019			June 30, 2018			June 30, 2019			June 30, 2018
Gain from antitrust litigation settlement	$	—		$	—		$	—		$	(3,591	)
Loss (gain) on sale of property, plant and equipment	3			(383		)	276			(383		)
Lease income	(329		)	—			(876		)	—
Depreciation on leased assets	366			—			1,551			—
Total other operating (income) expense, net	$	40		$	(383	)	$	951		$	(3,974	)

In the first quarter of 2018, we recorded a gain from the settlement of antitrust litigation in the amount of $3.6 million as a result of the settlement of a class action lawsuit, filed in 2005, which alleged that Dow Chemical Company and other urethane raw material suppliers unlawfully agreed to fix, raise, maintain or stabilize the prices of Polyether Polyol Products sold in the United States from January 1, 1999 through December 31, 2004 in violation of the federal antitrust laws.

We recognized lease income of approximately $0.3 million and $0.9 million for the three and six months ended June 30, 2019, respectively, as well as approximately $0.4 million and $1.6 million of related depreciation on leased assets for the three and six months ended June 30, 2019, respectively, in connection with the transitional leaseback of a portion of the facility and certain machinery and equipment acquired from Isola in August 2018.

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Recent Accounting Standards

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Recent Accounting Standards

Note 19 – Recent Accounting Standards

Recently Issued Standards

In August 2018, the Financial Accounting Standards Board (FASB) issued ASU 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans, which modifies the disclosure requirements for employers that sponsor defined benefit plans or other postretirement plans. This ASU is effective for our fiscal year ending December 31, 2020, with early adoption permitted. ASU 2018-14 is required to be applied on a retrospective basis to all periods presented. The Company is currently evaluating the potential impact of adopting this guidance on our consolidated financial statements.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement. This ASU modifies the disclosure requirements for fair value measurements by removing the requirement to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy and the policy for timing of such transfers. This ASU expands the disclosure requirements for Level 3 fair value measurements, primarily focused on changes in unrealized gains and losses included in other comprehensive income (loss). This ASU is effective for our fiscal year ending December 31, 2020 and for the interim periods within that year. Early adoption is permitted. ASU 2018-13 is generally required to be applied retrospectively to all periods presented upon their effective date with the exception of certain amendments, that should be applied prospectively to the most recent interim or annual period presented in the year of adoption. The Company is currently evaluating the potential impact of adopting this guidance on our consolidated financial statements.

Recently Adopted Standards Reflected in Our 2019 Financial Statements

In October 2018, the FASB issued ASU 2018-16, Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes, which permits the use of the OIS rate based on the SOFR as a U.S. benchmark interest rate for hedge accounting purposes. The amendments in this update were effective for the Company on January 1, 2019 and the Company will apply the amendments in this update to qualifying new or redesignated hedging relationships.

In August 2018, the FASB issued ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract, which aligns the requirements for capitalizing costs incurred in the implementation of a hosting arrangement that is a service contract with the requirements for capitalizing costs incurred to develop or obtain internal use software. The Company adopted this ASU on January 1, 2019 on a prospective basis and it did not have a material impact on our condensed consolidated financial statements.

In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This ASU allows for reclassification of stranded tax effects resulting from U.S. Tax Reform from accumulated other comprehensive loss to retained earnings but it does not require this reclassification. The Company adopted this ASU on January 1, 2019 and elected to not reclassify the stranded tax effects resulting from U.S. Tax Reform. As a result of that election, the adoption of ASU 2018-02 did not have an impact on the Company’s consolidated financial statements and disclosures.

In February 2016, the FASB issued ASU 2016-02, Leases, which 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 classify leases as either finance or operating leases and 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. An accounting policy election may be made to account for leases with a term of 12 months or less similar to existing guidance for operating leases today. ASU 2016-02 supersedes the existing guidance on accounting for leases. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements, which allowed for an optional transition method for the adoption of Topic 842. The two permitted transition methods are now the modified retrospective approach, which applies the new lease requirements at the beginning of the earliest period presented, and the optional transition method, which applies the new lease requirements through a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The Company adopted this standard on January 1, 2019 using the optional transition method. The Company elected to use the practical expedients that allow us to carry forward the historical lease classification. For additional information regarding the impact of the adoption of this standard, refer to “Note 11 - Leases.”

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Share Repurchases

6 Months Ended

Jun. 30, 2019

Equity [Abstract]

Share Repurchases

Note 20 – Share Repurchases

In 2015, we initiated a share repurchase program (the Program) of up to $100.0 million of the Company’s capital stock. We initiated the Program to mitigate potentially dilutive effects of stock options and shares of restricted stock granted by the Company, in addition to enhancing shareholder value. The Program has no expiration date, and may be suspended or discontinued at any time without notice. No share repurchases were made during the three and six months ended June 30, 2019. During the three and six months ended June 30, 2018, we repurchased 23,138 shares of our capital stock for $3.0 million. As of June 30, 2019, $49.0 million remained of our $100.0 million share repurchase program.

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Recent Accounting Standards (Policies)

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Recently Issued Standards and Recently Adopted Standards Reflected in Our 2019 Financial Statements

Recently Issued Standards

In August 2018, the Financial Accounting Standards Board (FASB) issued ASU 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans, which modifies the disclosure requirements for employers that sponsor defined benefit plans or other postretirement plans. This ASU is effective for our fiscal year ending December 31, 2020, with early adoption permitted. ASU 2018-14 is required to be applied on a retrospective basis to all periods presented. The Company is currently evaluating the potential impact of adopting this guidance on our consolidated financial statements.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement. This ASU modifies the disclosure requirements for fair value measurements by removing the requirement to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy and the policy for timing of such transfers. This ASU expands the disclosure requirements for Level 3 fair value measurements, primarily focused on changes in unrealized gains and losses included in other comprehensive income (loss). This ASU is effective for our fiscal year ending December 31, 2020 and for the interim periods within that year. Early adoption is permitted. ASU 2018-13 is generally required to be applied retrospectively to all periods presented upon their effective date with the exception of certain amendments, that should be applied prospectively to the most recent interim or annual period presented in the year of adoption. The Company is currently evaluating the potential impact of adopting this guidance on our consolidated financial statements.

Recently Adopted Standards Reflected in Our 2019 Financial Statements

In October 2018, the FASB issued ASU 2018-16, Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes, which permits the use of the OIS rate based on the SOFR as a U.S. benchmark interest rate for hedge accounting purposes. The amendments in this update were effective for the Company on January 1, 2019 and the Company will apply the amendments in this update to qualifying new or redesignated hedging relationships.

In August 2018, the FASB issued ASU 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract, which aligns the requirements for capitalizing costs incurred in the implementation of a hosting arrangement that is a service contract with the requirements for capitalizing costs incurred to develop or obtain internal use software. The Company adopted this ASU on January 1, 2019 on a prospective basis and it did not have a material impact on our condensed consolidated financial statements.

In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. This ASU allows for reclassification of stranded tax effects resulting from U.S. Tax Reform from accumulated other comprehensive loss to retained earnings but it does not require this reclassification. The Company adopted this ASU on January 1, 2019 and elected to not reclassify the stranded tax effects resulting from U.S. Tax Reform. As a result of that election, the adoption of ASU 2018-02 did not have an impact on the Company’s consolidated financial statements and disclosures.

In February 2016, the FASB issued ASU 2016-02, Leases, which 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 classify leases as either finance or operating leases and 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. An accounting policy election may be made to account for leases with a term of 12 months or less similar to existing guidance for operating leases today. ASU 2016-02 supersedes the existing guidance on accounting for leases. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements, which allowed for an optional transition method for the adoption of Topic 842. The two permitted transition methods are now the modified retrospective approach, which applies the new lease requirements at the beginning of the earliest period presented, and the optional transition method, which applies the new lease requirements through a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The Company adopted this standard on January 1, 2019 using the optional transition method. The Company elected to use the practical expedients that allow us to carry forward the historical lease classification. For additional information regarding the impact of the adoption of this standard, refer to “Note 11 - Leases.”

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2019

Fair Value Disclosures [Abstract]

Assets Measured at Fair Value on a Recurring Basis, Categorized by the Level of Inputs Used in the Valuation

Derivative instruments measured at fair value on a recurring basis, categorized by the level of inputs used in the valuation, include:

	Derivative Instruments at Fair Value as of June 30, 2019
(Dollars in thousands)	Level 1		Level 2			Level 3		Total
Foreign currency contracts	$	—	$	(184	)	$	—	$	(184	)
Copper derivative contracts	$	—	$	762		$	—	$	762
Interest rate swap	$	—	$	(1,284	)	$	—	$	(1,284	)

	Derivative Instruments at Fair Value as of December 31, 2018
(Dollars in thousands)	Level 1		Level 2		Level 3		Total
Foreign currency contracts	$	—	$	522	$	—	$	522
Copper derivative contracts	$	—	$	583	$	—	$	583
Interest rate swap	$	—	$	461	$	—	$	461

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Hedging Transactions and Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

As of June 30, 2019, the volume of our copper contracts outstanding was as follows:

Volume of Copper Derivatives
July 2019 - September 2019	191 metric tons per month
October 2019 - December 2019	195 metric tons per month
January 2020 - March 2020	202 metric tons per month
April 2020 - June 2020	202 metric tons per month
July 2020 - September 2020	201 metric tons per month

As of June 30, 2019, the notional values of the remaining foreign currency forward contracts were:

Notional Values of Foreign Currency Derivatives
USD/CNY	$	33,351,869
KRW/USD	₩	4,620,000,000
EUR/USD	€	8,750,874

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

In March 2017, we entered into an interest rate swap to hedge the variable interest rate on $75.0 million of our $450.0 million revolving credit facility. This transaction has been designated as a cash flow hedge and qualifies for hedge accounting treatment. For additional information regarding our revolving credit facility, refer to “Note 10 – Debt.”

Effects on Financial Statements

(Dollars in thousands)		The Effect of Current Derivative Instruments on the Financial Statements for the Period Ended June 30, 2019						Fair Values of Derivative Instruments as of June 30, 2019
		Gain (Loss)						Other Assets/ (Other Liabilities)(1)
	Location	Three Months Ended			Six Months Ended
Foreign Currency Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	125		$	(586	)	$	(184	)
Copper Derivative Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	(775	)	$	(465	)	$	762
Interest Rate Swap
Contract designated as hedging instrument	Other comprehensive income (loss)	$	(1,113	)	$	(1,745	)	$	(1,284	)

(Dollars in thousands)		The Effect of Current Derivative Instruments on the Financial Statements for the Period Ended June 30, 2018						Fair Values of Derivative Instruments as of June 30, 2018
		Gain (Loss)						Other Assets/(Other Liabilities)(1)
	Location	Three Months Ended			Six Months Ended
Foreign Currency Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	(60	)	$	(124	)	$	118
Copper Derivative Contracts
Contracts not designated as hedging instruments	Other income (expense), net	$	(363	)	$	(1,185	)	$	827
Interest Rate Swap
Contract designated as hedging instrument	Other comprehensive income (loss)	$	410		$	1,399		$	1,439

⁽¹⁾ All balances were recorded in the “Other current assets” or “Other accrued liabilities” line items in the consolidated statements of financial position, except the 2019 interest rate swap balance, which was recorded in the “Other long-term liabilities” line item in the condensed consolidated statements of financial position.

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Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2019

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 loss by component for the six months ended June 30, 2019 and 2018 were as follows:

(Dollars and accompanying footnotes in thousands)	Foreign Currency Translation Adjustments			Pension and Other Postretirement Benefits(1)			Derivative Instrument Designated as Cash Flow Hedge(2)			Total
Balance as of December 31, 2018	$	(30,488	)	$	(48,700	)	$	354		$	(78,834	)
Other comprehensive income (loss) before reclassifications	(2,075		)	—			(1,204		)	(3,279		)
Amounts reclassified from accumulated other comprehensive loss	—			313			(156		)	157
Net current-period other comprehensive income (loss)	(2,075		)	313			(1,360		)	(3,122		)
Balance as of June 30, 2019	$	(32,563	)	$	(48,387	)	$	(1,006	)	$	(81,956	)
Balance as of December 31, 2017	$	(17,983	)	$	(47,198	)	$	26		$	(65,155	)
Other comprehensive income (loss) before reclassifications	(8,293		)	—			1,153			(7,140		)
Amounts reclassified from accumulated other comprehensive loss	—			87			(56		)	31
Net current-period other comprehensive income (loss)	(8,293		)	87			1,097			(7,109		)
Balance as of June 30, 2018	$	(26,276	)	$	(47,111	)	$	1,123		$	(72,264	)

⁽¹⁾ Net of tax benefits of $9,893 and $9,984 as of June 30, 2019 and December 31, 2018, respectively. Net of tax benefits of $9,536 and $9,563 as of June 30, 2018 and December 31, 2017, respectively.

⁽²⁾ Net of tax benefits (expenses) of $278 and ($106) as of June 30, 2019 and December 31, 2018, respectively. Net of tax benefits (expenses) of ($316) and ($15) as of June 30, 2018 and December 31, 2017, respectively.

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Acquisitions (Tables)

6 Months Ended

Jun. 30, 2019

Business Combinations [Abstract]

Business acquisition, pro forma information

The following unaudited pro forma financial information presents the combined results of operations of Rogers and Griswold as if the Griswold acquisition had occurred on January 1, 2017. The unaudited pro forma financial information is not intended to represent or be indicative of our consolidated results of operations that would have been reported had the Griswold acquisition been completed as of January 1, 2017, and should not be taken as indicative of our future consolidated results of operations.

	Three Months Ended		Six Months Ended
(Dollars in thousands)	June 30, 2018		June 30, 2018
Net sales	$	222,350	$	444,073
Net income	16,554		42,436

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Inventories (Tables)

6 Months Ended

Jun. 30, 2019

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following:

(Dollars in thousands)	June 30, 2019		December 31, 2018
Raw materials	$	63,931	$	59,321
Work-in-process	31,646		30,086
Finished goods	39,490		43,230
Total inventories	$	135,067	$	132,637

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Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill from December 31, 2018 to June 30, 2019 by operating segment, were as follows:

(Dollars in thousands)	Advanced Connectivity Solutions		Elastomeric Material Solutions			Power Electronics Solutions			Other		Total
December 31, 2018	$	51,693	$	142,589		$	68,379		$	2,224	$	264,885
Foreign currency translation adjustment	—		(538		)	(543		)	—		(1,081		)
June 30, 2019	$	51,693	$	142,051		$	67,836		$	2,224	$	263,804

Intangible Assets

The gross carrying amount, accumulated amortization and net carrying amount of other intangible assets as of June 30, 2019 and December 31, 2018 by classification type, were as follows:

	June 30, 2019						December 31, 2018
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	$	149,496	$	34,508	$	114,988	$	149,753	$	30,078	$	119,675
Technology	81,273		41,943		39,330		81,535		38,624		42,911
Trademarks and trade names	11,995		3,779		8,216		12,019		3,213		8,806
Covenants not to compete	1,340		377		963		1,340		249		1,091
Total definite-lived other intangible assets	244,104		80,607		163,497		244,647		72,164		172,483
Indefinite-lived other intangible asset	4,488		—		4,488		4,525		—		4,525
Total other intangible assets	$	248,592	$	80,607	$	167,985	$	249,172	$	72,164	$	177,008

Weighted Average Amortization Period, by Intangible Asset Class

The weighted average amortization period as of June 30, 2019, by definite-lived other intangible asset class, is presented in the table below:

Definite-Lived Other Intangible Asset Class	Weighted Average Remaining Amortization Period
Customer relationships	7.4 years
Technology	4.2 years
Trademarks and trade names	4.9 years
Covenants not to compete	1.8 years
Total definite-lived other intangible assets	6.5 years

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2019

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)	Three Months Ended				Six Months Ended
	June 30, 2019		June 30, 2018		June 30, 2019		June 30, 2018
Numerator:
Net income	$	24,293	$	17,329	$	52,692	$	43,465
Denominator:
Weighted-average shares outstanding - basic	18,568		18,389		18,562		18,338
Effect of dilutive shares	162		271		149		297
Weighted-average shares outstanding - diluted	18,730		18,660		18,711		18,635
Basic earnings per share	$	1.31	$	0.94	$	2.84	$	2.37
Diluted earnings per share	$	1.30	$	0.93	$	2.82	$	2.33

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Capital Stock and Equity Compensation (Tables)

6 Months Ended

Jun. 30, 2019

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Assumptions Used in Calculation of Fair Value

Below are the assumptions used in the Monte Carlo calculation on the respective grant dates for awards granted in 2019 and 2018:

	June 3, 2019	February 7, 2019	September 17, 2018	February 8, 2018
Expected volatility	39.7%	36.7%	36.6%	34.8%
Expected term (in years)	2.6	2.9	3.0	3.0
Risk-free interest rate	1.78%	2.43%	2.85%	2.28%

Summary of Activity Under Stock Option Plans

A summary of the activity under our stock option plans for the six months ended June 30, 2019 is presented below:

	Options Outstanding		Weighted- Average Exercise Price Per Share		Weighted-Average Remaining Contractual Life in Years	Aggregate Intrinsic Value
Options outstanding, vested and exercisable as of December 31, 2018	10,950		$	31.99	2.0	$	734,469
Options exercised	(10,000	)	$	32.74
Options expired	(300	)	$	23.86
Options outstanding, vested and exercisable as of June 30, 2019	650		$	24.20	0.6	$	96,447

Performance-Based Restricted Stock Units

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Restricted Stock Activities

The following table summarizes the change in number of performance-based restricted stock units outstanding for the six months ended June 30, 2019:

	Performance-Based Restricted Stock Units
Awards outstanding as of December 31, 2018	142,434
Awards granted	111,087
Stock issued	(131,650	)
Awards forfeited	(11,549	)
Awards outstanding as of June 30, 2019	110,322

Time-Based Restricted Stock Units

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Restricted Stock Activities

A summary of activity of the outstanding time-based restricted stock units for the six months ended June 30, 2019 is presented below:

	Time-Based Restricted Stock Units
Awards outstanding as of December 31, 2018	117,476
Awards granted	59,561
Stock issued	(64,536	)
Awards forfeited	(7,596	)
Awards outstanding as of June 30, 2019	104,905

Deferred Stock Units

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Restricted Stock Activities

The following table summarizes the change in number of deferred stock units outstanding during the six months ended June 30, 2019:

	Deferred Stock Units
Awards outstanding as of December 31, 2018	8,400
Awards granted	5,950
Stock issued	(7,200	)
Awards outstanding as of June 30, 2019	7,150

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Leases (Tables)

6 Months Ended

Jun. 30, 2019

Leases [Abstract]

Lease, Cost

The following table includes our expenses and payments for operating leases for the three and six months ended June 30, 2019:

(Dollars in thousands)	Three Months Ended	Six Months Ended
	June 30, 2019	June 30, 2019
Operating leases expense	775	1,493
Short-term leases expense	43	82
Payments on operating lease obligations	760	1,524

The following table includes information regarding the lease term and discount rates utilized in the calculation of the present value of net future minimum lease payments:

	Finance Leases	Operating Leases
Weighted Average Remaining Lease Term	2.0 years	2.7 years
Weighted Average Discount Rate	2.55%	6.09%

Assets and Liabilities Balance Related to Finance and Operating Leases

As of June 30, 2019 and December 31, 2018, our assets and liabilities balances related to finance and operating leases were as follows:

(Dollars in thousands)	Location in Statements of Financial Position	June 30, 2019		December 31, 2018
Finance lease right-of-use assets	Property, plant and equipment, net	$	6,529	$	6,750
Operating lease right-of-use assets	Other long-term assets	$	6,285	$	—
Finance lease obligations, current portion	Other accrued liabilities	$	420	$	420
Finance lease obligations, non-current portion	Other long-term liabilities	$	4,394	$	4,629
Total finance lease obligations		$	4,814	$	5,049
Operating lease obligations, current portion	Other accrued liabilities	$	2,594	$	—
Operating lease obligations, non-current portion	Other long-term liabilities	$	3,710	$	—
Total operating lease obligations		$	6,304	$	—

Finance Lease, Liability, Maturity

The following table includes future minimum lease payments under finance and operating leases together with the present value of the net future minimum lease payments as of June 30, 2019:

(Dollars in thousands)	Finance			Operating
	Leases			Leases Signed			Less: Leases Not Yet Commenced		Leases
2019	$	278		$	1,478		$	—	$	1,478
2020	521			2,713			—		2,713
2021	4,238			1,589			—		1,589
2022	—			822			—		822
2023	—			229			—		229
Thereafter	—			30			—		30
Total Lease Payments	5,037			6,861			—		6,861
Less: Interest	(223		)	(557		)	—		(557		)
Present Value of Net Future Minimum Lease Payments	$	4,814		$	6,304		$	—	$	6,304

Operating Lease, Liability, Maturity

The following table includes future minimum lease payments under finance and operating leases together with the present value of the net future minimum lease payments as of June 30, 2019:

(Dollars in thousands)	Finance			Operating
	Leases			Leases Signed			Less: Leases Not Yet Commenced		Leases
2019	$	278		$	1,478		$	—	$	1,478
2020	521			2,713			—		2,713
2021	4,238			1,589			—		1,589
2022	—			822			—		822
2023	—			229			—		229
Thereafter	—			30			—		30
Total Lease Payments	5,037			6,861			—		6,861
Less: Interest	(223		)	(557		)	—		(557		)
Present Value of Net Future Minimum Lease Payments	$	4,814		$	6,304		$	—	$	6,304

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Pension Benefits and Other Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2019

Defined Benefit Plan [Abstract]

Components of Net Periodic Benefit Cost

The components of net periodic (benefit) cost for the periods indicated were:

	Pension Benefits												Retirement Health and Life Insurance Benefits
(Dollars in thousands)	Three Months Ended						Six Months Ended						Three Months Ended						Six Months Ended
	June 30,						June 30,						June 30,						June 30,
	2019			2018			2019			2018			2019			2018			2019			2018
Service cost	$	—		$	—		$	—		$	—		$	18		$	17		$	36		$	38
Interest cost	1,785			1,692			3,569			3,372			15			16			30			31
Expected return of plan assets	(2,192		)	(2,164		)	(4,384		)	(4,333		)	—			—			—			—
Amortization of prior service credit	—			—			—			—			(253		)	(400		)	(506		)	(801		)
Amortization of net loss	456			457			910			913			—			—			—			—
Net periodic cost (benefit)	$	49		$	(15	)	$	95		$	(48	)	$	(220	)	$	(367	)	$	(440	)	$	(732	)

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Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2019

Commitments and Contingencies Disclosure [Abstract]

Schedule of Liability for Unpaid Claims and Claims Adjustment Expense

The following table summarizes the change in number of asbestos claims outstanding during the six months ended June 30, 2019:

	Asbestos Claims
Claims outstanding as of December 31, 2018	745
New claims filed	165
Pending claims concluded(1)	(106	)
Claims outstanding as of June 30, 2019	804

⁽¹⁾For the six months ended June 30, 2019, 98 claims were dismissed and 8 claims were settled. Settlements totaled approximately $0.7 million for the six months ended June 30, 2019.

Schedule of Asbestos-Related Claims and Insurance Receivables

As of June 30, 2019 and December 31, 2018, our projected asbestos-related claims and insurance receivables were as follows:

(Dollars in millions)	June 30, 2019		December 31, 2018
Asbestos-related claims	$	70.8	$	70.3
Asbestos-related insurance receivables	$	64.4	$	63.8

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Segment Information (Tables)

6 Months Ended

Jun. 30, 2019

Segment Reporting [Abstract]

Reportable Segment Information

The following table presents a disaggregation of revenue from contracts with customers and other pertinent financial information, for the periods indicated; inter-segment sales have been eliminated from the net sales data:

(Dollars in thousands)	Advanced Connectivity Solutions		Elastomeric Material Solutions		Power Electronics Solutions			Other		Total
Three Months Ended June 30, 2019
Net sales - recognized over time	$	—	$	2,965	$	51,319		$	4,313	$	58,597
Net sales - recognized at a point in time	92,529		90,929		343			454		184,255
Total net sales	$	92,529	$	93,894	$	51,662		$	4,767	$	242,852
Operating income	$	18,458	$	15,326	$	(1,884	)	$	1,313	$	33,213
Three Months Ended June 30, 2018
Net sales - recognized over time	$	—	$	907	$	53,052		$	4,616	$	58,575
Net sales - recognized at a point in time	76,376		78,309		595			820		156,100
Total net sales	$	76,376	$	79,216	$	53,647		$	5,436	$	214,675
Operating income	$	10,594	$	8,421	$	4,239		$	1,970	$	25,224
Six Months Ended June 30, 2019
Net sales - recognized over time	$	—	$	5,971	$	110,921		$	8,917	$	125,809
Net sales - recognized at a point in time	172,999		180,685		555			2,602		356,841
Total net sales	$	172,999	$	186,656	$	111,476		$	11,519	$	482,650
Operating income	$	31,522	$	28,757	$	2,383		$	3,351	$	66,013
Six Months Ended June 30, 2018
Net sales - recognized over time	$	—	$	1,941	$	110,451		$	9,265	$	121,657
Net sales - recognized at a point in time	149,831		155,358		909			1,531		307,629
Total net sales	$	149,831	$	157,299	$	111,360		$	10,796	$	429,286
Operating income	$	18,496	$	22,581	$	11,260		$	3,932	$	56,269

Information relating to our segment operations by geographic area for the three months ended June 30, 2019 and 2018 was as follows:

(Dollars in thousands)	Net Sales (1)
Region/Country	Advanced Connectivity Solutions		Elastomeric Material Solutions		Power Electronics Solutions		Other		Total
June 30, 2019
United States	$	16,272	$	41,370	$	8,208	$	1,079	$	66,929
Other Americas	1,039		2,190		229		206		3,664
Total Americas	17,311		43,560		8,437		1,285		70,593
China	49,333		23,846		11,283		953		85,415
Other APAC	17,026		15,534		6,625		760		39,945
Total APAC	66,359		39,380		17,908		1,713		125,360
Germany	3,951		3,471		14,305		130		21,857
Other EMEA	4,908		7,483		11,012		1,639		25,042
Total EMEA	8,859		10,954		25,317		1,769		46,899
Total net sales	$	92,529	$	93,894	$	51,662	$	4,767	$	242,852
June 30, 2018
United States	$	14,447	$	35,777	$	8,279	$	866	$	59,369
Other Americas	758		2,179		323		725		3,985
Total Americas	15,205		37,956		8,602		1,591		63,354
China	32,032		24,071		8,940		1,410		66,453
Other APAC	18,588		8,324		7,092		649		34,653
Total APAC	50,620		32,395		16,032		2,059		101,106
Germany	4,823		2,595		16,524		163		24,105
Other EMEA	5,728		6,270		12,489		1,623		26,110
Total EMEA	10,551		8,865		29,013		1,786		50,215
Total net sales	$	76,376	$	79,216	$	53,647	$	5,436	$	214,675

⁽¹⁾  Net sales are allocated to countries based on the location of the customer. The table above lists individual countries with 10% or more of net sales for the periods indicated.

Information relating to our segment operations by geographic area for the six months ended June 30, 2019 and 2018 was as follows:

(Dollars in thousands)	Net Sales (1)
Region/Country	Advanced Connectivity Solutions		Elastomeric Material Solutions		Power Electronics Solutions		Other		Total
June 30, 2019
United States	$	29,343	$	84,835	$	15,685	$	2,369	$	132,232
Other Americas	1,791		4,273		249		397		6,710
Total Americas	31,134		89,108		15,934		2,766		138,942
China	91,822		46,265		22,347		3,466		163,900
Other APAC	31,167		30,022		11,963		1,569		74,721
Total APAC	122,989		76,287		34,310		5,035		238,621
Germany	8,423		6,907		36,252		276		51,858
Other EMEA	10,453		14,354		24,980		3,442		53,229
Total EMEA	18,876		21,261		61,232		3,718		105,087
Total net sales	$	172,999	$	186,656	$	111,476	$	11,519	$	482,650
June 30, 2018
United States	$	26,725	$	73,469	$	16,857	$	2,123	$	119,174
Other Americas	1,584		3,980		681		555		6,800
Total Americas	28,309		77,449		17,538		2,678		125,974
China	65,539		44,865		18,362		2,727		131,493
Other APAC	33,926		17,484		13,543		1,442		66,395
Total APAC	99,465		62,349		31,905		4,169		197,888
Germany	11,073		5,337		31,234		332		47,976
Other EMEA	10,984		12,164		30,683		3,617		57,448
Total EMEA	22,057		17,501		61,917		3,949		105,424
Total net sales	$	149,831	$	157,299	$	111,360	$	10,796	$	429,286

⁽¹⁾ 

Net sales are allocated to countries based on the location of the customer. The table above lists individual countries with 10% or more of net sales for the periods indicated.

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Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Contract Assets by Operating Segment

The following table presents contract assets by operating segment as of June 30, 2019 and December 31, 2018:

(Dollars in thousands)	June 30, 2019		December 31, 2018
Advanced Connectivity Solutions	$	—	$	—
Elastomeric Material Solutions	955		943
Power Electronics Solutions	22,652		19,738
Other	1,966		2,047
Total contract assets	$	25,573	$	22,728

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Restructuring and Impairment Charges (Tables)

6 Months Ended

Jun. 30, 2019

Restructuring and Related Activities [Abstract]

Restructuring and Related Costs

The following table presents severance activity related to the facility consolidation for the six months ended June 30, 2019:

(Dollars in thousands)	Severance Related to Facility Consolidation
Balance as of December 31, 2018	$	523
Provisions	—
Payments	(523		)
Balance as of June 30, 2019	$	—

We recognized $0.9 million and $1.0 million in impairment charges on certain assets in connection with the Isola USA Corp. (Isola) asset acquisition for the three and six months ended June 30, 2019, respectively.

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Supplemental Financial Information (Tables)

6 Months Ended

Jun. 30, 2019

Supplemental Income Statement Elements [Abstract]

Schedule Of Income Statement Supplemental Disclosures

The components of “Other operating (income) expense, net” are as follows:

	Three Months Ended						Six Months Ended
(Dollars in thousands)	June 30, 2019			June 30, 2018			June 30, 2019			June 30, 2018
Gain from antitrust litigation settlement	$	—		$	—		$	—		$	(3,591	)
Loss (gain) on sale of property, plant and equipment	3			(383		)	276			(383		)
Lease income	(329		)	—			(876		)	—
Depreciation on leased assets	366			—			1,551			—
Total other operating (income) expense, net	$	40		$	(383	)	$	951		$	(3,974	)

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Fair Value Measurements (Various Instruments That Require Fair Value Measurement) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Foreign currency contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives	$ (184)	$ 522
Foreign currency contracts | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives	0	0
Foreign currency contracts | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives	(184)	522
Foreign currency contracts | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives	0	0
Copper derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives	762	583
Copper derivative contracts | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives	0	0
Copper derivative contracts | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives	762	583
Copper derivative contracts | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives	0	0
Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives	(1,284)	461
Interest rate swap | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives	0	0
Interest rate swap | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives	(1,284)	461
Interest rate swap | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivatives	$ 0	$ 0

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Hedging Transactions and Derivative Financial Instruments (Additional Information) (Details)	Jun. 30, 2019 Contract	Dec. 31, 2017 USD ($)	Mar. 31, 2017 USD ($)
Bank Term Loan
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	26
Third Amended Credit Agreement | Revolving Credit Facility
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Maximum borrowing capacity		$ 450,000,000.0	$ 450,000,000.0
Interest rate swap | Third Amended Credit Agreement | Revolving Credit Facility
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged balance on debt instrument			$ 75,000,000.0

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Hedging Transactions and Derivative Financial Instruments (Notional Values of Derivative Instruments) (Details)	Jun. 30, 2019 EUR (€) T / mo	Jun. 30, 2019 USD ($) T / mo
Contracts not designated as hedging instruments | USD/CNY | Foreign Currency Derivatives
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives | $		$ 33,351,869
Contracts not designated as hedging instruments | KRW/USD | Foreign Currency Derivatives
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives | $		$ 4,620,000,000
Contracts not designated as hedging instruments | EUR/USD | Foreign Currency Derivatives
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives | €	€ 8,750,874
Contract designated as hedging instrument | July 2019 - September 2019
Derivative [Line Items]
Volume of Copper Derivatives (in metric tons per month)	191	191
Contract designated as hedging instrument | October 2019 - December 2019
Derivative [Line Items]
Volume of Copper Derivatives (in metric tons per month)	195	195
Contract designated as hedging instrument | January 2020 - March 2020
Derivative [Line Items]
Volume of Copper Derivatives (in metric tons per month)	202	202
Contract designated as hedging instrument | April 2020 - June 2020
Derivative [Line Items]
Volume of Copper Derivatives (in metric tons per month)	202	202
Contract designated as hedging instrument | July 2020 - September 2020
Derivative [Line Items]
Volume of Copper Derivatives (in metric tons per month)	201	201

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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, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Contracts not designated as hedging instruments | Other income (expense), net | Foreign Currency Contracts
Derivative [Line Items]
The Effect of Current Derivative Instruments on the Financial Statements, Gain (Loss)	$ 125	$ (60)	$ (586)	$ (124)
Contracts not designated as hedging instruments | Other income (expense), net | Copper Derivative Contracts
Derivative [Line Items]
The Effect of Current Derivative Instruments on the Financial Statements, Gain (Loss)	(775)	(363)	(465)	(1,185)
Contract designated as hedging instrument | Other comprehensive income (loss) | Interest rate swap
Derivative [Line Items]
The Effect of Current Derivative Instruments on the Financial Statements, Gain (Loss)	(1,113)	410	(1,745)	1,399
Level 2 | Fair Value, Measurements, Recurring | Foreign Currency Contracts
Derivative [Line Items]
Fair Value of Derivative Instruments, Other Assets/(Other Liabilities)	(184)	118	(184)	118
Level 2 | Fair Value, Measurements, Recurring | Copper Derivative Contracts
Derivative [Line Items]
Fair Value of Derivative Instruments, Other Assets/(Other Liabilities)	762	827	762	827
Level 2 | Fair Value, Measurements, Recurring | Interest rate swap
Derivative [Line Items]
Fair Value of Derivative Instruments, Other Assets/(Other Liabilities)	$ (1,284)	$ 1,439	$ (1,284)	$ 1,439

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Accumulated Other Comprehensive Loss (Components of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period			$ 848,324
Other comprehensive income (loss)	$ 1,467	$ (14,930)	(3,122)	$ (7,109)
Balance, end of period	897,514	804,785	897,514	804,785
AOCI, pension and other postretirement benefit plans, tax benefits (expense)	9,893	9,536	9,893	9,536	$ 9,984	$ 9,563
AOCI, cumulative changes in net gain (loss) from cash flow hedges, tax benefit (expense)	278	(316)	278	(316)	$ (106)	$ (15)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period			(30,488)	(17,983)
Other comprehensive income (loss) before reclassifications			(2,075)	(8,293)
Amounts reclassified from accumulated other comprehensive loss			0	0
Other comprehensive income (loss)			(2,075)	(8,293)
Balance, end of period	(32,563)	(26,276)	(32,563)	(26,276)
Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period			(48,700)	(47,198)
Other comprehensive income (loss) before reclassifications			0	0
Amounts reclassified from accumulated other comprehensive loss			313	87
Other comprehensive income (loss)			313	87
Balance, end of period	(48,387)	(47,111)	(48,387)	(47,111)
Derivative Instrument Designated as Cash Flow Hedge
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period			354	26
Other comprehensive income (loss) before reclassifications			(1,204)	1,153
Amounts reclassified from accumulated other comprehensive loss			(156)	(56)
Other comprehensive income (loss)			(1,360)	1,097
Balance, end of period	(1,006)	1,123	(1,006)	1,123
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(83,423)	(57,334)	(78,834)	(65,155)
Other comprehensive income (loss) before reclassifications			(3,279)	(7,140)
Amounts reclassified from accumulated other comprehensive loss			157	31
Other comprehensive income (loss)	1,467	(14,930)	(3,122)	(7,109)
Balance, end of period	$ (81,956)	$ (72,264)	$ (81,956)	$ (72,264)

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Acquisitions - Additional Information (Details) - Griswold $ in Millions	Jul. 06, 2018 USD ($)
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired	100.00%
Consideration transferred	$ 78.0

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Acquisitions - Business Acquisition Pro Forma Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Business Combinations [Abstract]
Net sales	$ 222,350	$ 444,073
Net income	$ 16,554	$ 42,436

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Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 63,931	$ 59,321
Work-in-process	31,646	30,086
Finished goods	39,490	43,230
Total inventories	$ 135,067	$ 132,637

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Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 264,885
Foreign currency translation adjustment	(1,081)
Goodwill, ending balance	263,804
Advanced Connectivity Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	51,693
Foreign currency translation adjustment	0
Goodwill, ending balance	51,693
Elastomeric Material Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	142,589
Foreign currency translation adjustment	(538)
Goodwill, ending balance	142,051
Power Electronics Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	68,379
Foreign currency translation adjustment	(543)
Goodwill, ending balance	67,836
Other
Goodwill [Roll Forward]
Goodwill, beginning balance	2,224
Foreign currency translation adjustment	0
Goodwill, ending balance	$ 2,224

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Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 244,104	$ 244,647
Indefinite-lived other intangible asset	4,488	4,525
Total other intangible assets, gross carrying amount	248,592	249,172
Accumulated Amortization	80,607	72,164
Net Carrying Amount	163,497	172,483
Total other intangible assets, net carrying amount	167,985	177,008
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	149,496	149,753
Accumulated Amortization	34,508	30,078
Net Carrying Amount	114,988	119,675
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	81,273	81,535
Accumulated Amortization	41,943	38,624
Net Carrying Amount	39,330	42,911
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11,995	12,019
Accumulated Amortization	3,779	3,213
Net Carrying Amount	8,216	8,806
Covenants not to compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,340	1,340
Accumulated Amortization	377	249
Net Carrying Amount	$ 963	$ 1,091

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Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 4.4	$ 3.8	$ 8.9	$ 7.7
Annual Future Amortization Expense
Anticipated future amortization expense for the remainder of 2019	8.9		8.9
Anticipated future amortization expense for 2020	14.6		14.6
Anticipated future amortization expense for 2021	13.8		13.8
Anticipated future amortization expense for 2022	13.3		13.3
anticipated future amortization expense for 2023	$ 12.7		$ 12.7

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Goodwill and Other Intangible Assets - Weighted Average Amortization Period by Intangible Asset Class (Details)	6 Months Ended
	Jun. 30, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	6 years 6 months
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	7 years 4 months 24 days
Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	4 years 2 months 12 days
Trademarks and trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	4 years 10 months 24 days
Covenants not to compete
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	1 year 9 months 18 days

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Earnings Per Share (Computation of Basic and Diluted) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Numerator:
Net income	$ 24,293	$ 17,329	$ 52,692	$ 43,465
Denominator:
Weighted-average shares outstanding - basic (in shares)	18,568,000	18,389,000	18,562,000	18,338,000
Effect of dilutive shares (in shares)	162,000	271,000	149,000	297,000
Weighted-average shares outstanding - dilutive (in shares)	18,730,000	18,660,000	18,711,000	18,635,000
Basic earnings per share (in dollars per share)	$ 1.31	$ 0.94	$ 2.84	$ 2.37
Diluted earnings per share (in dollars per share)	$ 1.30	$ 0.93	$ 2.82	$ 2.33
Anti-dilutive shares excluded (in shares)	6,256	27,145

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Capital Stock and Equity Compensation (Additional Information) (Details) $ in Thousands	3 Months Ended		6 Months Ended		87 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) offering_periods	Jun. 30, 2018 USD ($)	Jun. 30, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from the exercise of stock options, net			$ 327	$ 698
Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock award program, measurement period (years)			3 years
Expected dividend yield (percent)			0.00%
Compensation expense	$ 1,100	$ 800	$ 2,000	1,800
Performance-Based Restricted Stock Units | 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 Units | 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%
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	1,100	900	$ 1,100	900
Conversion ratio			1
Time-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 1,400	$ 1,300	$ 2,900	$ 2,900
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, contractual term (years)			10 years
Stock options, number of shares granted in period, gross | shares					0
Proceeds from the exercise of stock options, net			$ 1,100
Options exercised, total intrinsic value			$ 300
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
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%

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Capital Stock and Equity Compensation (Monte Carlo Calculation Assumptions) (Details) - Performance-Based Restricted Stock Units	Jun. 03, 2019	Feb. 07, 2019	Sep. 17, 2018	Feb. 08, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility (percent)	39.70%	36.70%	36.60%	34.80%
Expected term (in years)	2 years 7 months 6 days	2 years 10 months 24 days	3 years	3 years
Risk-free interest rate (percent)	1.78%	2.43%	2.85%	2.28%

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Capital Stock and Equity Compensation (Performance Based Restricted Stock Awards) (Details) - Performance-Based Restricted Stock Units	6 Months Ended
	Jun. 30, 2019 shares
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)	142,434
Awards granted (shares)	111,087
Stock issued (shares)	(131,650)
Awards forfeited (shares)	(11,549)
Non-vested awards outstanding ending balance (shares)	110,322

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Capital Stock and Equity Compensation (Time Based Restricted Stock Awards) (Details) - Time-Based Restricted Stock Units	6 Months Ended
	Jun. 30, 2019 shares
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)	117,476
Awards granted (shares)	59,561
Stock issued (shares)	(64,536)
Awards forfeited (shares)	(7,596)
Non-vested awards outstanding ending balance (shares)	104,905

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Capital Stock and Equity Compensation (Deferred Stock Units) (Details) - Deferred Stock Units	6 Months Ended
	Jun. 30, 2019 shares
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)	8,400
Awards granted (shares)	5,950
Stock issued (shares)	(7,200)
Non-vested awards outstanding ending balance (shares)	7,150

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Capital Stock and Equity Compensation (Summary of Activity Under Stock Option Plans) (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2019
Options Outstanding
Options outstanding at beginning of period (shares)	10,950
Options exercised (shares)	(10,000)
Options forfeited (shares)	(300)
Options outstanding, vested and exercisable at end of period (shares)	650	10,950
Weighted- Average Exercise Price Per Share
Options outstanding at beginning of period (in dollars per share)	$ 31.99
Options exercised (in dollars per share)	32.74
Options forfeited (in dollars per share)	23.86
Options outstanding, vested and exercisable at end of period (in dollars per share)	$ 24.20	$ 31.99
Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Remaining Contractual Term
Weighted-Average Remaining Contractual Life in Year, options outstanding, vested and exercisable	7 months 6 days	2 years
Aggregate Intrinsic Value
Aggregate Intrinsic Value, options outstanding, vested and exercisable (amount), beginning of period	$ 734,469
Aggregate Intrinsic Value, options outstanding, vested and exercisable (amount), end of period	$ 734,469	$ 734,469	$ 96,447

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Debt (Additional Information) (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Debt Instrument [Line Items]
Interest expense incurred on outstanding debt	$ 2,100,000	$ 1,100,000	$ 4,200,000	$ 2,000,000.0
Borrowings under revolving credit facility	$ 195,482,000		$ 195,482,000		$ 228,482,000
Debt instrument, leverage ratio, maximum	2.75		2.75
Maximum
Debt Instrument [Line Items]
Dividends			$ 20,000,000.0
Credit Agreement
Debt Instrument [Line Items]
Variable rate lower range basis spread	37.50%		37.50%
Variable rate higher range basis spread	75.00%		75.00%
Third Amended Credit Agreement
Debt Instrument [Line Items]
Leverage ratio	3.25		3.25
One-time leverage ratio maximum option	3.50		3.50
ICR covenant limit	3.00		3.00
Discretionary principal payments on revolving credit facility			$ 33,000,000.0
Outstanding borrowings	$ 1,400,000		$ 1,400,000
Eurocurrency loans | Credit Agreement
Debt Instrument [Line Items]
Line of credit, LIBOR rate, minimum spread	137.50%		137.50%
Line of credit, LIBOR rate, maximum spread	175.00%		175.00%
Revolving Credit Facility | Third Amended Credit Agreement
Debt Instrument [Line Items]
Debt instrument, term						5 years
Maximum borrowing capacity						$ 450,000,000.0	$ 450,000,000.0
Additional borrowing capacity						$ 175,000,000.0
Revolving Credit Facility | Third Amended Credit Agreement | Minimum
Debt Instrument [Line Items]
Unused capacity, commitment fee percentage			20.00%
Revolving Credit Facility | Third Amended Credit Agreement | Maximum
Debt Instrument [Line Items]
Unused capacity, commitment fee percentage			30.00%
Interest rate swap | Revolving Credit Facility | Third Amended Credit Agreement
Debt Instrument [Line Items]
Hedged balance on debt instrument							$ 75,000,000.0
Griswold
Debt Instrument [Line Items]
Proceeds from line of credit					82,500,000
Rogers Plan
Debt Instrument [Line Items]
Additional borrowing under line of credit					$ 20,000,000.0
Federal Funds Rate | Credit Agreement
Debt Instrument [Line Items]
Basis spread on variable rate			0.50%
London Interbank Offered Rate (LIBOR) | Third Amended Credit Agreement
Debt Instrument [Line Items]
Basis spread on variable rate			1.50%

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Leases (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Finance lease obligation	$ 4,814	$ 4,814	$ 5,049
Finance lease right-of-use assets	6,529	6,529	6,750
Operating lease right-of-use assets	6,285	6,285	0
Operating lease, liability	6,304	6,304	0
Germany
Lessee, Lease, Description [Line Items]
Finance lease obligation	4,800	4,800	5,000
Finance lease right-of-use assets	6,500	6,500	6,700
Finance lease, right-of-use asset, amortization		3,700	$ 3,500
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets				$ 6,200
Operating lease, liability				$ 6,200
Additional operating lease asset recognized	100	800
Additional operating lease liability recognized	100	800
Scenario, Adjustment
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	7,000	7,000
Operating lease, liability	$ 7,000	$ 7,000

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Leases (Lease Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Leases [Abstract]
Operating leases expense	$ 775	$ 1,493
Short-term leases expense	43	82
Payments on operating lease obligations	$ 760	$ 1,524

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Leases (Assets and Liabilities Balance Related to Finance and Operating Leases) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Leases [Abstract]
Finance lease right-of-use assets	$ 6,529	$ 6,750
Operating lease right-of-use assets	6,285	0
Finance lease obligations, current portion	420	420
Finance lease obligations, non-current portion	4,394	4,629
Total finance lease obligations	4,814	5,049
Operating lease obligations, current portion	2,594	0
Operating lease obligations, non-current portion	3,710	0
Total operating lease obligations	$ 6,304	$ 0

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Leases (Lease Payments) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Finance Leases
2019	$ 278
2020	521
2021	4,238
2022	0
2023	0
Thereafter	0
Total Lease Payments	5,037
Less: Interest	(223)
Present Value of Net Future Minimum Lease Payments	4,814	$ 5,049
Operating Leases Signed
2019	1,478
2020	2,713
2021	1,589
2022	822
2023	229
Thereafter	30
Total Lease Payments	6,861
Less: Interest	(557)
Present Value of Net Future Minimum Lease Payments	6,304
Operating Less: Leases Not Yet Commenced
2019	0
2020	0
2021	0
2022	0
2023	0
Thereafter	0
Total Lease Payments	0
Less: Interest	0
Present Value of Net Future Minimum Lease Payments	0
Operating Leases
2019	1,478
2020	2,713
2021	1,589
2022	822
2023	229
Thereafter	30
Total Lease Payments	6,861
Less: Interest	(557)
Total operating lease obligations	$ 6,304	$ 0

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Leases (Lease Term and Discount Rate) (Details)	Jun. 30, 2019
Leases [Abstract]
Finance leases, weighted average remaining lease term	2 years
Finance leases, weighted average discount rate	2.55%
Operating leases, weighted average remaining lease term	2 years 8 months 12 days
Operating leases, weighted average discount rate	6.09%

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Pension Benefits and Other Postretirement Benefit Plans (Additional Information) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($) plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of qualified noncontributory defined benefit plans | plan	2
Merged Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension plan, accumulated other comprehensive loss, before tax | $	$ 47

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Pension Benefits and Other Postretirement Benefit Plans (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Pension Benefits
Change in benefit obligation:
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	1,785	1,692	3,569	3,372
Expected return of plan assets	(2,192)	(2,164)	(4,384)	(4,333)
Amortization of prior service credit	0	0	0	0
Amortization of net loss	456	457	910	913
Net periodic cost (benefit)	49	(15)	95	(48)
Retirement Health and Life Insurance Benefits
Change in benefit obligation:
Service cost	18	17	36	38
Interest cost	15	16	30	31
Expected return of plan assets	0	0	0	0
Amortization of prior service credit	(253)	(400)	(506)	(801)
Amortization of net loss	0	0	0	0
Net periodic cost (benefit)	$ (220)	$ (367)	$ (440)	$ (732)

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Commitments and Contingencies (Details) $ in Millions	Jun. 30, 2019 USD ($)
Connecticut Voluntary Corrective Action Program
Loss Contingencies [Line Items]
Estimated total cleanup costs, accrual	$ 1.6

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Commitments and Contingencies (Schedule of Loss Contingencies) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($) claims claim
Liability for Asbestos and Environmental Claims [Roll Forward]
Claims outstanding as of December 31, 2018	745
New claims filed	165
Pending claims concluded	(106)
Claims outstanding as of June 30, 2019	804
Number of claims dismissed | claim	98
Number of claims settled | claim	8
Settlements | $	$ 0.7

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Commitments and Contingencies (Schedule of Total Estimated Liability for Asbestos) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Asbestos-related claims	$ 70.8	$ 70.3
Asbestos-related insurance receivables	$ 64.4	$ 63.8

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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Effective tax rate (percent)	22.90%	32.60%	18.50%	23.20%
Unrecognized tax benefits	$ 9.8		$ 9.8
Unrecognized tax benefits that would decrease the effective tax rate if recognized	9.6		9.6
Unrecognized tax benefits that could be recognized within 12 months	1.4		1.4
Unrecognized tax benefits, penalties accrued	$ 0.6		$ 0.6

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Segment Information (Income by Reportable Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Net sales	$ 242,852	$ 214,675	$ 482,650	$ 429,286
Operating income	33,213	25,224	66,013	56,269
Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	92,529	76,376	172,999	149,831
Operating income	18,458	10,594	31,522	18,496
Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	93,894	79,216	186,656	157,299
Operating income	15,326	8,421	28,757	22,581
Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	51,662	53,647	111,476	111,360
Operating income	(1,884)	4,239	2,383	11,260
Other
Segment Reporting Information [Line Items]
Net sales	4,767	5,436	11,519	10,796
Operating income	1,313	1,970	3,351	3,932
Recognized over time
Segment Reporting Information [Line Items]
Net sales	58,597	58,575	125,809	121,657
Recognized over time | Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	0	0	0	0
Recognized over time | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	2,965	907	5,971	1,941
Recognized over time | Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	51,319	53,052	110,921	110,451
Recognized over time | Other
Segment Reporting Information [Line Items]
Net sales	4,313	4,616	8,917	9,265
Recognized at a point in time
Segment Reporting Information [Line Items]
Net sales	184,255	156,100	356,841	307,629
Recognized at a point in time | Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	92,529	76,376	172,999	149,831
Recognized at a point in time | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	90,929	78,309	180,685	155,358
Recognized at a point in time | Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	343	595	555	909
Recognized at a point in time | Other
Segment Reporting Information [Line Items]
Net sales	454	820	2,602	1,531
United States
Segment Reporting Information [Line Items]
Net sales	66,929	59,369	132,232	119,174
United States | Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	16,272	14,447	29,343	26,725
United States | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	41,370	35,777	84,835	73,469
United States | Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	8,208	8,279	15,685	16,857
United States | Other
Segment Reporting Information [Line Items]
Net sales	1,079	866	2,369	2,123
Other Americas
Segment Reporting Information [Line Items]
Net sales	3,664	3,985	6,710	6,800
Other Americas | Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	1,039	758	1,791	1,584
Other Americas | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	2,190	2,179	4,273	3,980
Other Americas | Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	229	323	249	681
Other Americas | Other
Segment Reporting Information [Line Items]
Net sales	206	725	397	555
Total Americas
Segment Reporting Information [Line Items]
Net sales	70,593	63,354	138,942	125,974
Total Americas | Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	17,311	15,205	31,134	28,309
Total Americas | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	43,560	37,956	89,108	77,449
Total Americas | Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	8,437	8,602	15,934	17,538
Total Americas | Other
Segment Reporting Information [Line Items]
Net sales	1,285	1,591	2,766	2,678
China
Segment Reporting Information [Line Items]
Net sales	85,415	66,453	163,900	131,493
China | Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	49,333	32,032	91,822	65,539
China | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	23,846	24,071	46,265	44,865
China | Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	11,283	8,940	22,347	18,362
China | Other
Segment Reporting Information [Line Items]
Net sales	953	1,410	3,466	2,727
Other APAC
Segment Reporting Information [Line Items]
Net sales	39,945	34,653	74,721	66,395
Other APAC | Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	17,026	18,588	31,167	33,926
Other APAC | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	15,534	8,324	30,022	17,484
Other APAC | Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	6,625	7,092	11,963	13,543
Other APAC | Other
Segment Reporting Information [Line Items]
Net sales	760	649	1,569	1,442
Total APAC
Segment Reporting Information [Line Items]
Net sales	125,360	101,106	238,621	197,888
Total APAC | Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	66,359	50,620	122,989	99,465
Total APAC | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	39,380	32,395	76,287	62,349
Total APAC | Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	17,908	16,032	34,310	31,905
Total APAC | Other
Segment Reporting Information [Line Items]
Net sales	1,713	2,059	5,035	4,169
Germany
Segment Reporting Information [Line Items]
Net sales	21,857	24,105	51,858	47,976
Germany | Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	3,951	4,823	8,423	11,073
Germany | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	3,471	2,595	6,907	5,337
Germany | Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	14,305	16,524	36,252	31,234
Germany | Other
Segment Reporting Information [Line Items]
Net sales	130	163	276	332
Other EMEA
Segment Reporting Information [Line Items]
Net sales	25,042	26,110	53,229	57,448
Other EMEA | Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	4,908	5,728	10,453	10,984
Other EMEA | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	7,483	6,270	14,354	12,164
Other EMEA | Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	11,012	12,489	24,980	30,683
Other EMEA | Other
Segment Reporting Information [Line Items]
Net sales	1,639	1,623	3,442	3,617
Total EMEA
Segment Reporting Information [Line Items]
Net sales	46,899	50,215	105,087	105,424
Total EMEA | Advanced Connectivity Solutions
Segment Reporting Information [Line Items]
Net sales	8,859	10,551	18,876	22,057
Total EMEA | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	10,954	8,865	21,261	17,501
Total EMEA | Power Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	25,317	29,013	61,232	61,917
Total EMEA | Other
Segment Reporting Information [Line Items]
Net sales	$ 1,769	$ 1,786	$ 3,718	$ 3,949

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Revenue from Contracts with Customers - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total contract assets	$ 25,573	$ 22,728
Advanced Connectivity Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total contract assets	0	0
Elastomeric Material Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total contract assets	955	943
Power Electronics Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total contract assets	22,652	19,738
Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total contract assets	$ 1,966	$ 2,047

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Restructuring and Impairment Charges - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restructuring Cost and Reserve [Line Items]
Impairment charges	$ 900		$ 956	$ 0
Facility Consolidation
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 100	$ 500	900	$ 500
Severance and retention expenses			$ 500

XML

Restructuring and Impairment Charges - Schedule of Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restructuring Reserve [Roll Forward]
Provisions	$ 1,083	$ 541	$ 1,905	$ 963
Facility Consolidation
Restructuring Reserve [Roll Forward]
Beginning balance			523
Provisions			0
Payments			(523)
Ending balance	$ 0		$ 0

XML

Supplemental Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Supplemental Income Statement Elements [Abstract]
Gain from antitrust litigation settlement	$ 0	$ 0	$ (3,600)	$ 0	$ (3,591)
Loss (gain) on sale of property, plant and equipment	3	(383)		276	(383)
Lease income	(329)	0		(876)	0
Depreciation on leased assets	366	0		1,551	0
Total other operating (income) expense, net	$ 40	$ (383)		$ 951	$ (3,974)

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Share Repurchases (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2015
Equity [Abstract]
Authorized stock repurchase amount				$ 100,000,000.0
Shares of capital stock repurchased (in shares)	23,138,000	0	23,138
Shares repurchased	$ 3,000,000		$ 3,000,000.0
Remaining authorized stock repurchase amount		$ 49,000,000.0

XML

Label	Element	Value
Accounting Standards Update 2016-02 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(20,000)
Accounting Standards Update 2014-09 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	4,212,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 0