Stoneridge (SRI) 10-Q 31 Jul 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Jul. 25, 2019
Document and Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2019
Entity File Number	001-13337
Entity Registrant Name	STONERIDGE INC
Entity Incorporation, State or Country Code	OH
Entity Tax Identification Number	34-1598949
Entity Address, Address Line One	39675 MacKenzie Drive, Suite 400
Entity Address, City or Town	Novi
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	48377
City Area Code	248
Local Phone Number	489-9300
Title of 12(g) Security	Common Shares
Trading Symbol	SRI
Amendment Flag	false
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock Shares Outstanding		27,381,333
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001043337
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2019

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 51,503	$ 81,092
Accounts receivable, less reserves of $1,592 and $1,243, respectively	151,687	139,076
Inventories, net	100,751	79,278
Prepaid expenses and other current assets	32,148	20,731
Total current assets	336,089	320,177
Long-term assets:
Property, plant and equipment, net	116,954	112,213
Intangible assets, net	58,890	62,032
Goodwill	36,377	36,717
Operating lease right of use asset	18,970
Investments and other long-term assets, net	28,767	28,380
Total long-term assets	259,958	239,342
Total assets	596,047	559,519
Current liabilities:
Current portion of debt	869	1,533
Accounts payable	100,659	87,894
Accrued expenses and other current liabilities	61,987	57,880
Total current liabilities	163,515	147,307
Long-term liabilities:
Revolving credit facility	103,500	96,000
Long-term debt, net	732	983
Deferred income taxes	15,042	14,895
Operating lease long-term liability	14,565
Other long-term liabilities	17,194	17,068
Total long-term liabilities	151,033	128,946
Shareholders' equity:
Preferred Shares, without par value, 5,000 shares authorized, none issued
Common Shares, without par value, 60,000 shares authorized, 28,966 and 28,966 shares issued and 27,367 and 28,488 shares outstanding at June 30, 2019 and December 31, 2018, respectively, with no stated value
Additional paid-in capital	223,831	231,647
Common Shares held in treasury, 1,599 and 478 shares at June 30, 2019 and December 31, 2018, respectively, at cost	(50,689)	(8,880)
Retained earnings	195,672	146,251
Accumulated other comprehensive loss	(87,315)	(85,752)
Total Stoneridge, Inc. shareholders' equity	281,499	283,266
Total liabilities and shareholders' equity	$ 596,047	$ 559,519

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Accounts receivable, reserves (in dollars)	$ 1,592	$ 1,243
Preferred shares, no par value	$ 0	$ 0
Preferred shares, authorized	5,000
Preferred shares, issued	0	0
Common shares, no par value	$ 0	$ 0
Common shares, authorized	60,000
Common shares, issued	28,966	28,966
Common shares, outstanding	27,367	28,488
Common shares held in treasury, shares	1,599	478

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ 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	$ 222,241	$ 220,602	$ 440,538	$ 446,532
Costs and expenses:
Cost of goods sold	165,414	153,184	322,858	311,145
Selling, general and administrative	27,522	35,256	63,110	72,517
Gain on disposal	(33,921)		(33,599)
Design and development	14,040	12,981	27,284	26,842
Operating income	49,186	19,181	60,885	36,028
Interest expense, net	1,001	1,170	2,004	2,524
Equity in earnings of investee	(548)	(665)	(912)	(1,186)
Other income, net	(97)	(264)	(529)	(863)
Income before income taxes	48,830	18,940	60,322	35,553
Provision for income taxes	9,066	3,820	10,901	7,053
Net income	$ 39,764	$ 15,120	$ 49,421	$ 28,500
Earnings per share:
Basic (in dollars per share)	$ 1.43	$ 0.53	$ 1.75	$ 1.01
Diluted (in dollars per share)	$ 1.41	$ 0.52	$ 1.72	$ 0.99
Weighted-average shares outstanding:
Basic (in shares)	27,887,157	28,449,303	28,208,229	28,349,362
Diluted (in shares)	28,293,547	28,977,747	28,715,725	28,907,357

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Other Comprehensive Income [Abstract]
Net income				$ 49,421	$ 28,500
Net income		$ 39,764	$ 15,120	49,421	28,500
Other comprehensive (loss) income, net of tax attributable to Stoneridge, Inc.:
Foreign currency translation		2,311	(17,421)	(1,493)	(13,527)
Unrealized (loss) gain on derivatives	[1]	(112)	(159)	(70)	636
Other comprehensive (loss) income, net of tax attributable to Stoneridge, Inc.		2,199	(17,580)	(1,563)	(12,891)
Comprehensive income attributable to Stoneridge, Inc.		$ 41,963	$ (2,460)	$ 47,858	$ 15,609
[1]	Net of tax benefit of $(30 ) and $(41) for the three months ended June 30, 2019 and 2018, respectively. Net of tax expense (benefit) of $(19) and $171 for the six months ended June 30, 2019 and 2018, respectively.

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Other Comprehensive Income [Abstract]
Tax expense (benefit) for unrealized gain on derivatives	$ (30)	$ (41)	$ (19)	$ 171

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
OPERATING ACTIVITIES:
Net income	$ 49,421	$ 28,500
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	11,819	11,535
Amortization, including accretion of deferred financing costs	3,464	3,503
Deferred income taxes	3,804	1,765
Earnings of equity method investee	(912)	(1,186)
Gain on sale of fixed assets	(26)	(18)
Share-based compensation expense	3,594	2,838
Tax benefit related to share-based compensation expense	(752)	(879)
Gain on disposal of non-core products, net	(33,599)
Change in fair value of earn-out contingent consideration	921	1,417
Changes in operating assets and liabilities, net of effect of business combination:
Accounts receivable, net	(13,440)	(11,594)
Inventories, net	(21,798)	(10,610)
Prepaid expenses and other assets	(9,678)	(8,417)
Accounts payable	13,604	8,678
Accrued expenses and other liabilities	242	3,379
Net cash provided by operating activities	6,664	28,911
INVESTING ACTIVITIES:
Capital expenditures	(17,479)	(16,845)
Proceeds from sale of fixed assets	49	41
Insurance proceeds for fixed assets	0	1,403
Proceeds from disposal of non-core switch and connector products	34,386
Investment in venture capital fund	(1,200)
Net cash provided by (used for) investing activities	15,756	(15,401)
FINANCING ACTIVITIES:
Revolving credit facility borrowings	55,000	26,500
Revolving credit facility payments	(47,500)	(37,500)
Proceeds from issuance of debt	55	273
Repayments of debt	(999)	(2,459)
Earn-out consideration cash payment	(3,394)
Other financing costs	(873)
Repurchase of Common Shares	(50,000)
Repurchase of Common Shares to satisfy employee tax withholding	(3,209)	(4,242)
Net cash used for financing activities	(50,920)	(17,428)
Effect of exchange rate changes on cash and cash equivalents	(1,089)	(3,120)
Net change in cash and cash equivalents	(29,589)	(7,038)
Cash and cash equivalents at beginning of period	81,092	66,003
Cash and cash equivalents at end of period	51,503	58,965
Supplemental disclosure of cash flow information:
Cash paid for interest	2,198	2,679
Cash paid for income taxes, net	$ 7,100	$ 7,967

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands		Number of Common Shares outstanding	Treasury Shares	Additional Paid-In Capital	Common Shares held in treasury	Retained earnings	Accumulated other comprehensive loss	Total
Balance at Dec. 31, 2017				$ 228,486	$ (7,118)	$ 92,264	$ (69,560)	$ 244,072
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2017		28,180
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2017			786
Net income						13,380		13,380
Unrealized gain on derivatives, net							795	795
Currency translation adjustments							3,894	3,894
Issuance of Common Shares ( in shares)		446
Issuance of restricted Common Shares ( in treasury shares)			(446)
Repurchased Common Shares for treasury					(1,387)			(1,387)
Repurchased Common Shares for treasury (in shares)		(136)
Repurchased Common Shares for treasury (in treasury shares)			136
Share-based compensation				(925)				(925)
Balance at Mar. 31, 2018				227,561	(8,505)	105,432	(64,871)	259,617
Common Stock, Shares, Outstanding, Ending Balance at Mar. 31, 2018		28,490
Treasury Stock, Shares, Ending Balance at Mar. 31, 2018			476
Balance at Dec. 31, 2017				228,486	(7,118)	92,264	(69,560)	244,072
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2017		28,180
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2017			786
Net income								28,500
Unrealized gain on derivatives, net	[1]							636
Balance at Jun. 30, 2018				228,856	(8,911)	120,552	(82,451)	258,046
Common Stock, Shares, Outstanding, Ending Balance at Jun. 30, 2018		28,483
Treasury Stock, Shares, Ending Balance at Jun. 30, 2018			483
Cumulative effect of a accounting change						(212)		(212)
Balance at Mar. 31, 2018				227,561	(8,505)	105,432	(64,871)	259,617
Common Stock, Shares, Outstanding, Beginning Balance at Mar. 31, 2018		28,490
Treasury Stock, Shares, Beginning Balance at Mar. 31, 2018			476
Net income						15,120		15,120
Unrealized gain on derivatives, net							(159)	(159)	[1]
Currency translation adjustments							(17,421)	(17,421)
Issuance of Common Shares ( in shares)		11
Issuance of restricted Common Shares ( in treasury shares)			(11)
Repurchased Common Shares for treasury					(406)			(406)
Repurchased Common Shares for treasury (in shares)		(18)
Repurchased Common Shares for treasury (in treasury shares)			18
Share-based compensation				1,295				1,295
Balance at Jun. 30, 2018				228,856	(8,911)	120,552	(82,451)	258,046
Common Stock, Shares, Outstanding, Ending Balance at Jun. 30, 2018		28,483
Treasury Stock, Shares, Ending Balance at Jun. 30, 2018			483
Balance at Dec. 31, 2018				231,647	(8,880)	146,251	(85,752)	$ 283,266
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2018		28,488						28,488
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2018			478					478
Net income						9,657		$ 9,657
Unrealized gain on derivatives, net							42	42
Currency translation adjustments							(3,804)	(3,804)
Issuance of Common Shares ( in shares)		305
Issuance of restricted Common Shares ( in treasury shares)			(305)
Repurchased Common Shares for treasury					(1,883)			(1,883)
Repurchased Common Shares for treasury (in shares)		(98)
Repurchased Common Shares for treasury (in treasury shares)			98
Share-based compensation				480				480
Balance at Mar. 31, 2019				232,127	(10,763)	155,908	(89,514)	287,758
Common Stock, Shares, Outstanding, Ending Balance at Mar. 31, 2019		28,695
Treasury Stock, Shares, Ending Balance at Mar. 31, 2019			271
Balance at Dec. 31, 2018				231,647	(8,880)	146,251	(85,752)	$ 283,266
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2018		28,488						28,488
Treasury Stock, Shares, Beginning Balance at Dec. 31, 2018			478					478
Net income								$ 49,421
Unrealized gain on derivatives, net	[1]							(70)
Balance at Jun. 30, 2019				223,831	(50,689)	195,672	(87,315)	$ 281,499
Common Stock, Shares, Outstanding, Ending Balance at Jun. 30, 2019		27,367						27,367
Treasury Stock, Shares, Ending Balance at Jun. 30, 2019			1,599					1,599
Balance at Mar. 31, 2019				232,127	(10,763)	155,908	(89,514)	$ 287,758
Common Stock, Shares, Outstanding, Beginning Balance at Mar. 31, 2019		28,695
Treasury Stock, Shares, Beginning Balance at Mar. 31, 2019			271
Net income						39,764		39,764
Unrealized gain on derivatives, net							(112)	(112)	[1]
Currency translation adjustments							2,311	2,311
Issuance of Common Shares ( in shares)		31
Issuance of restricted Common Shares ( in treasury shares)			(31)
Repurchased Common Shares for treasury					74			74
Repurchased Common Shares for treasury (in shares)		(9)
Repurchased Common Shares for treasury (in treasury shares)			9
Common Share repurchase program				(10,000)	(40,000)			(50,000)
Common Share repurchase program (in shares)		(1,350)
Common Share repurchase program (in treasury shares)			1,350
Share-based compensation				1,704				1,704
Balance at Jun. 30, 2019				$ 223,831	$ (50,689)	$ 195,672	$ (87,315)	$ 281,499
Common Stock, Shares, Outstanding, Ending Balance at Jun. 30, 2019		27,367						27,367
Treasury Stock, Shares, Ending Balance at Jun. 30, 2019			1,599					1,599
[1]	Net of tax benefit of $(30 ) and $(41) for the three months ended June 30, 2019 and 2018, respectively. Net of tax expense (benefit) of $(19) and $171 for the six months ended June 30, 2019 and 2018, respectively.

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2019
Basis of Presentation [Abstract]
Basis of Presentation	(1) Basis of Presentation The accompanying condensed consolidated financial statements have been prepared by Stoneridge, Inc. (the “Company”) without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). The information furnished in the condensed consolidated financial statements includes normal recurring adjustments and reflects all adjustments, which are, in the opinion of management, necessary for a fair presentation of such financial statements. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) have been condensed or omitted pursuant to the SEC’s rules and regulations. The results of operations for the three and six months ended June 30, 2019 are not necessarily indicative of the results to be expected for the full year. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in the Company’s 2018 Form 10K The Company’s investment in Minda Stoneridge Instruments Ltd. (“MSIL”) for the three and six months ended June 30, 2019 and 2018 has been determined to be an unconsolidated entity, and therefore is accounted for under the equity method of accounting based on the Company’s 49% ownership in MSIL.

Recently Issued Accounting Stan

Recently Issued Accounting Standards	6 Months Ended
	Jun. 30, 2019
Recently Issued Accounting Standards [Abstract]
Recently Issued Accounting Standards	(2) Recently Issued Accounting Standards Recently Adopted Accounting Standards In January 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-02, “Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This guidance gives entities the option to reclassify to retained earnings the tax effects resulting from the enactment of Tax Cuts and Jobs Act related to items in accumulated other comprehensive income (“AOCI”) that the FASB refers to as having been stranded in AOCI. The new guidance was effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. The Company adopted this standard on January 1, 2019, which did not have a material impact on its condensed consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)”, which requires that a lessee recognize assets and liabilities on the balance sheet for all leases with a lease term of more than twelve months, with the result being the recognition of a right of use asset and a lease liability. The new standard was effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company adopted this standard as of January 1, 2019 using the modified retrospective approach and elected the transition option to use the effective date January 1, 2019, as the date of initial application. The Company did not adjust its comparative period financial statements for effects of the ASU 2016-02, or make the new required lease disclosures for periods before the effective date. The Company recognized its cumulative effect transition adjustment as of the effective date. In addition, the Company elected the package of practical expedients permitted under the transition guidance within the new standard. The impact of the adoption resulted in the recognition of right-of-use (“ROU”) assets and lease liabilities on the condensed consolidated balance sheet of $20,618 and $20,856 , respectively, as of January 1, 2019. The standard did not have a material impact on the Company’s condensed consolidated results of operations and cash flows upon adoption. Accounting Standards Not Yet Adopted In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments”, which requires measurement and recognition of expected credit losses for financial assets held and requires enhanced disclosures regarding significant estimates and judgments used in estimating credit losses. ASU 2016-13 is effective for public business entities for annual periods beginning after December 15, 2019, and early adoption is permitted for annual periods beginning after December 15, 2018. The Company is currently evaluating the impact of its pending adoption of ASU 2016-13 on the consolidated financial statements. The Company will adopt this standard as of January 1, 2020 and it is not expected to have a material impact on its condensed consolidated financial statements.

Revenue

Revenue	6 Months Ended
	Jun. 30, 2019
Revenue [Abstract]
Revenue	(3) Revenue Revenue is recognized when obligations under the terms of a contract with our customer are satisfied; generally this occurs with the transfer of control of our products and services, which is usually when the parts are shipped or delivered to the customer’s premises. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. The transaction price will include estimates of variable consideration to the extent it is probable that a significant reversal of revenue recognized will not occur. Incidental items that are not significant in the context of the contract are recognized as expense. The expected costs associated with our base warranties continue to be recognized as expense when the products are sold. Customer returns only occur if products do not meet the specifications of the contract and are not connected to any repurchase obligations of the Company. The Company does not have any financing components or significant payment terms as payment occurs shortly after the point of sale. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction that are collected by the Company from a customer are excluded from revenue. Amounts billed to customers related to shipping and handling costs are included in net sales in the condensed consolidated statements of operations. Shipping and handling costs associated with outbound freight after control over a product is transferred to the customer are accounted for as a fulfillment cost and are included in cost of sales. Revenue by Reportable Segment Control Devices. Electronics. PST. The following tables disaggregate our revenue by reportable segment and geographical location (1) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ Electronics ​ PST ​ Consolidated Three months ended June 30 2019 2018 2019 2018 2019 2018 2019 2018 Net Sales: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ North America ​ $ 98,066 ​ $ 98,564 ​ $ 25,227 ​ $ 22,321 ​ $ - ​ $ - ​ $ 123,293 ​ $ 120,885 South America ​ - ​ - ​ - ​ - ​ 16,614 ​ 20,333 ​ 16,614 ​ 20,333 Europe ​ 5,456 ​ 3,669 ​ 64,798 ​ 67,411 ​ - ​ - ​ 70,254 ​ 71,080 Asia Pacific ​ 10,545 ​ 7,723 ​ 1,535 ​ 581 ​ - ​ - ​ 12,080 ​ 8,304 Total net sales ​ $ 114,067 ​ $ 109,956 ​ $ 91,560 ​ $ 90,313 ​ $ 16,614 ​ $ 20,333 ​ $ 222,241 ​ $ 220,602 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ Electronics ​ PST ​ Consolidated Six months ended June 30 2019 2018 2019 2018 2019 2018 2019 2018 Net Sales: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ North America ​ $ 194,786 ​ $ 203,007 ​ $ 47,874 ​ $ 42,307 ​ $ - ​ $ - ​ $ 242,660 ​ $ 245,314 South America ​ - ​ - ​ - ​ - ​ 33,946 ​ 40,878 ​ 33,946 ​ 40,878 Europe ​ 9,868 ​ 6,560 ​ 131,740 ​ 135,955 ​ - ​ - ​ 141,608 ​ 142,515 Asia Pacific ​ 19,532 ​ 15,746 ​ 2,792 ​ 2,079 ​ - ​ - ​ 22,324 ​ 17,825 Total net sales ​ $ 224,186 ​ $ 225,313 ​ $ 182,406 ​ $ 180,341 ​ $ 33,946 ​ $ 40,878 ​ $ 440,538 ​ $ 446,532 (1) Company sales based on geographic location are where the sale originates not where the customer is located. Performance Obligations For OEM and Tier 1 supplier customers, the Company typically enters into contracts with its customers to provide serial production parts that consist of a set of documents including, but not limited to, an award letter, master purchase agreement and master terms and conditions. For each production product, the Company enters into separate purchase orders that contain the product specifications and an agreed-upon price. The performance obligation does not exist until a customer release is received for a specific number of parts. The majority of the parts sold to OEM and Tier 1 supplier customers are specifically customized to the specific customer, with the exception of off-highway products that are common across all customers. The transaction price is equal to the contracted price per part and there is no expectation of material variable consideration in the transaction price. For most customer contracts, the Company does not have an enforceable right to payment at any time prior to when the parts are shipped or delivered to the customer; therefore, the Company recognizes revenue at the point in time it satisfies a performance obligation by transferring control of a part to the customer. Certain customer contracts contain an enforceable right to payment if the customer terminates the contract for convenience and therefore are recognized over time using the cost to complete input method. Our aftermarket products are focused on meeting the demand for repair and replacement parts, compliance parts and accessories and are sold primarily to aftermarket distributors and mass retailers in our South American, European and North American markets. Aftermarket products have one type of performance obligation which is the delivery of aftermarket parts and spare parts. For aftermarket customers, the Company typically has standard terms and conditions for all customers. In addition, aftermarket products have alternative use as they can be sold to multiple customers. Revenue for aftermarket part production contracts is recognized at a point in time when the control of the parts transfer to the customer which is based on the shipping terms. Aftermarket contracts may include variable consideration related to discounts and rebates and is included in the transaction price upon recognizing the product revenue. A small portion of the Company’s sales are comprised of monitoring services that include both monitoring devices and fees to individual, corporate, fleet and cargo customers in our PST segment. These monitoring service contracts are generally not capable of being distinct and are accounted for as a single performance obligation. We recognize revenue for our monitoring products and services contracts over the life of the contract. There is no variable consideration associated with these contracts. The Company has the right to consideration from a customer in the amount that corresponds directly with the value to the customer of the Company’s performance to date. Therefore, the Company recognizes revenue over time using the practical expedient ASC 606-10-55-18 in the amount the Company has a “right to invoice” rather than selecting an output or input method. Contract Balances The Company had no material contract assets, contract liabilities or capitalized contract acquisition costs as of June 30, 2019 and December 31, 2018.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2019
Inventories [Abstract]
Inventories	(4) Inventories Inventories are valued at the lower of cost (using either the first-in, first-out (“FIFO”) or average cost methods) or net realizable value. The Company evaluates and adjusts as necessary its excess and obsolescence reserve on a quarterly basis. Excess inventories are quantities of items that exceed anticipated sales or usage for a reasonable period. The Company has guidelines for calculating provisions for excess inventories based on the number of months of inventories on-hand compared to anticipated sales or usage. Management uses its judgment to forecast sales or usage and to determine what constitutes a reasonable period. Inventory cost includes material, labor and overhead. Inventories consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ 2019 2018 Raw materials ​ $ 60,951 ​ $ 54,382 Work-in-progress ​ ​ 5,447 ​ ​ 4,710 Finished goods ​ ​ 34,353 ​ ​ 20,186 Total inventories, net ​ $ 100,751 ​ $ 79,278 ​ Inventory valued using the FIFO method was $85,263 and $64,745 at June 30, 2019 and December 31, 2018, respectively. Inventory valued using the average cost method was $15,488 and $14,533 at June 30, 2019 and December 31, 2018, respectively.

Financial Instruments and Fair

Financial Instruments and Fair Value Measurements	6 Months Ended
	Jun. 30, 2019
Financial Instruments and Fair Value Measurements [Abstract]
Financial Instruments and Fair Value Measurements	(5) Financial Instruments and Fair Value Measurements Financial Instruments A financial instrument is cash or a contract that imposes an obligation to deliver or conveys a right to receive cash or another financial instrument. The carrying values of cash and cash equivalents, accounts receivable and accounts payable are considered to be representative of fair value because of the short maturity of these instruments. The fair value of debt approximates the carrying value of debt. Derivative Instruments and Hedging Activities On June 30, 2019, the Company had open foreign currency forward contracts which are used solely for hedging and not for speculative purposes. Management believes that its use of these instruments to reduce risk is in the Company’s best interest. The counterparties to these financial instruments are financial institutions with investment grade credit ratings. Foreign Currency Exchange Rate Risk The Company conducts business internationally and therefore is exposed to foreign currency exchange rate risk. The Company uses derivative financial instruments as cash flow and fair value hedges to manage its exposure to fluctuations in foreign currency exchange rates by reducing the effect of such fluctuations on foreign currency denominated intercompany transactions, inventory purchases and other foreign currency exposures. The Company hedged the Mexican peso currency during the first six months of 2019 and, during 2018, the Company hedged the euro and Mexican peso currencies. In addition, the Company hedged the U.S. dollar against the Swedish krona and euro on behalf of its European subsidiaries in 2018. These forward contracts were executed to hedge forecasted transactions and have been accounted for as cash flow hedges. As such, the effective portion of the unrealized gain or loss was deferred and reported in the Company’s condensed consolidated balance sheets as a component of accumulated other comprehensive loss. The cash flow hedges were highly effective. The effectiveness of the transactions has been and will be measured on an ongoing basis using regression analysis and forecasted future purchases of the currency. In certain instances, the foreign currency forward contracts do not qualify for hedge accounting or are not designated as hedges, and therefore are marked-to-market with gains and losses recognized in the Company’s condensed consolidated statement of operations as a component of other income, net. The Company’s foreign currency forward contracts offset a portion of the gains and losses on the underlying foreign currency denominated transactions as follows: Euro-denominated Foreign Currency Forward Contract At June 30, 2019 and December 31, 2018, there were no foreign currency forward contracts entered into as the contract was settled in December 2018. The euro-denominated foreign currency forward contract was not designated as a hedging instrument. The Company recognized a gain of U.S. dollar-denominated Foreign Currency Forward Contracts – Cash Flow Hedges The Company entered into on behalf of one of its European Electronics subsidiaries, whose functional currency is the Swedish krona, U.S. dollar-denominated currency contracts which expired ratably on a monthly basis from February 2018 through December 2018. There were no such contracts at June 30, 2019 or December 31, 2018. The Company entered into on behalf of one of its European Electronics subsidiaries, whose functional currency is the euro, U.S. dollar-denominated currency contracts which expired ratably on a monthly basis from February 2018 through December 2018. There were no such contracts at June 30, 2019 or December 31, 2018. Mexican Peso-denominated Foreign Currency Forward Contracts – Cash Flow Hedge The Company holds Mexican peso-denominated foreign currency forward contracts with notional amounts at June 30, 2019 of $2,953 which expire ratably on a monthly basis from July 2019 through December 2019, compared to a notional amount of $9,017 at December 31, 2018. The Company evaluated the effectiveness of the Mexican peso-denominated foreign currency forward contracts held as of June 30, 2019 and December 31, 2018 and concluded that the hedges were highly effective. The notional amounts and fair values of derivative instruments in the condensed consolidated balance sheets were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Prepaid expenses ​ Accrued expenses and ​ ​ Notional amounts (A) ​ and other current assets ​ other current liabilities ​ ​ June 30, ​ December 31, ​ June 30, ​ December 31, ​ June 30, ​ December 31, ​ 2019 2018 2019 2018 2019 2018 Derivatives designated as hedging instruments: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash flow hedges: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Forward currency contracts ​ $ 2,953 ​ $ 9,017 ​ $ 281 ​ $ 370 ​ $ - ​ $ - ​ (A) Notional amounts represent the gross contract of the derivatives outstanding in U.S. dollars. Gross amounts recorded for the cash flow hedges in other comprehensive income (loss) and in net income for the three months ended June 30 are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gain reclassified from ​ ​ Gain recorded in other ​ other comprehensive income ​ ​ comprehensive income (loss) ​ (loss) into net income (A) ​ 2019 2018 2019 2018 Derivatives designated as cash flow hedges: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Forward currency contracts ​ $ 157 ​ $ 24 ​ $ 299 ​ $ 224 ​ Gross amounts recorded for the cash flow hedges in other comprehensive income (loss) and in net income for the six months ended June 30 are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gains reclassified from ​ ​ Gain recorded in other ​ other comprehensive income ​ ​ comprehensive income (loss) ​ (loss) into net income (A) ​ 2019 2018 2019 2018 Derivatives designated as cash flow hedges: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Forward currency contracts ​ $ 426 ​ $ 1,182 ​ $ 515 ​ $ 375 (A) Gains reclassified from other comprehensive income (loss) into net income were recognized in cost of goods sold (“COGS”) in the Company’s condensed consolidated statements of operations. The net deferred gain of $281 on the cash flow hedge derivatives will be reclassified from other comprehensive income (loss) to the condensed consolidated statements of operations through December 2019. Fair Value Measurements The Company’s assets and liabilities are measured at fair value on a recurring basis and are categorized using the three levels of the fair value hierarchy based on the reliability of the inputs used. Fair values estimated using Level 1 inputs consist of quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. Fair values estimated using Level 2 inputs, other than quoted prices, are observable for the asset or liability, either directly or indirectly and include among other things, quoted prices for similar assets or liabilities in markets that are active or inactive as well as inputs other than quoted prices that are observable. For forward currency contracts, inputs include foreign currency exchange rates. Fair values estimated using Level 3 inputs consist of significant unobservable inputs. The following table presents our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the three levels of the fair value hierarchy based on the reliability of inputs used. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ ​ December 31, ​ ​ ​ ​ ​ 2019 ​ 2018 ​ ​ ​ ​ ​ Fair values estimated using ​ ​ ​ ​ ​ ​ ​ ​ Level 1 ​ Level 2 ​ Level 3 ​ ​ ​ ​ Fair value inputs inputs inputs Fair value Financial assets carried at fair value: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Forward currency contracts ​ $ 281 ​ $ - ​ $ 281 ​ $ - ​ $ 370 Total financial assets carried at fair value ​ $ 281 ​ $ - ​ $ 281 ​ $ - ​ $ 370 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial liabilities carried at fair value: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Earn-out consideration ​ $ 11,057 ​ $ - ​ $ - ​ $ 11,057 ​ $ 18,672 Total financial liabilities carried at fair value ​ $ 11,057 ​ $ - ​ $ - ​ $ 11,057 ​ $ 18,672 ​ The following table sets forth a summary of the change in fair value of the Company’s Level 3 financial liabilities related to earn-out consideration that are measured at fair value on a recurring basis. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Orlaco PST Total Balance at December 31, 2018 ​ $ 8,602 ​ $ 10,070 ​ $ 18,672 Change in fair value ​ ​ - ​ ​ 921 ​ ​ 921 Foreign currency adjustments ​ ​ (128) ​ ​ 66 ​ ​ (62) Earn-out consideration cash payment ​ ​ (8,474) ​ ​ - ​ ​ (8,474) Balance at June 30, 2019 ​ $ - ​ $ 11,057 ​ $ 11,057 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Orlaco PST Total Balance at December 31, 2017 ​ $ 8,637 ​ $ 12,109 ​ $ 20,746 Change in fair value ​ ​ 369 ​ ​ 1,048 ​ ​ 1,417 Foreign currency adjustments ​ ​ (244) ​ ​ (1,873) ​ ​ (2,117) Balance at June 30, 2018 ​ $ 8,762 ​ $ 11,284 ​ $ 20,046 ​ The Company will be required to pay the PST earn-out consideration, which is not capped, based on PST’s financial performance in either 2020 or 2021. The fair value of the PST earn-out consideration is based on discounted cash flows utilizing forecasted EBITDA in 2020 and 2021 using the key inputs of forecasted sales and expected operating income reduced by the market required rate of return. The earn-out consideration obligation related to PST is recorded within other long-term liabilities in the condensed consolidated balance sheets as of June 30, 2019 and December 31, 2018. The fair value of the Orlaco earn-out consideration was based on a Monte Carlo simulation utilizing forecasted earnings before interest, taxes, depreciation and amortization (“EBITDA”) for the 2017 and 2018 earn-out period as well as a growth rate reduced by the market required rate of return. The earn-out consideration obligation related to Orlaco was recorded within other current liabilities in the consolidated balance sheet as of December 31, 2018. The change in fair value of the earn-out considerations are recorded within selling, general and administrative (“SG&A”) expense in the condensed consolidated statements of operations for the three and six months ended June 30, 2019 and 2018. The earn-out consideration obligation related to Orlaco of $8,474 was paid in March 2019 and recorded in the condensed consolidated statement of cash flows within operating and financing activities in the amounts of $5,080 and $3,394, respectively, for the six months ended June 30, 2019. The Orlaco earn-out consideration reached the capped amount of €7,500 as of the quarter ended March 31, 2018 due to actual performance exceeding forecasted performance and remained at the capped amount until it was paid out in March 2019. The net increase in fair value of the earn-out consideration for PST was due to the reduced time from the current period end to the payment date, partially offset by foreign currency translation. The foreign currency impact for the PST earn-out considerations is included in other (income) expense, net in the condensed consolidated statements of operations. There were no transfers in or out of Level 3 from other levels in the fair value hierarchy for the six months ended June 30, 2019.

Share-Based Compensation

Share-Based Compensation	6 Months Ended
	Jun. 30, 2019
Share-Based Compensation [Abstract]
Share-Based Compensation	(6) Share-Based Compensation Compensation expense for share-based compensation arrangements, which is recognized in the condensed consolidated statements of operations as a component of SG&A expenses, was $2,046 and $1,434 for the three months ended June 30, 2019 and 2018, respectively. For the six months ended June 30, 2019 total share-based compensation was $3,594 compared to $2,838 for the six months ended June 30, 2018. The three and six months ended June 30, 2019 included accelerated expense associated with the retirement of eligible employees of $503, respectively. The three and six months ended June 30, 2018 also included income for forfeiture of certain grants associated with employee resignations.

Debt

Debt	6 Months Ended
	Jun. 30, 2019
Debt [Abstract]
Debt	(7) Debt Debt consisted of the following at June 30, 2019 and December 31, 2018: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ Interest rates at ​ ​ ​ 2019 2018 June 30, 2019 Maturity Revolving Credit Facility ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Credit Facility ​ $ 103,500 ​ $ 96,000 ​ 3.28% - 3.45% ​ June 2024 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Debt ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ PST short-term obligations ​ ​ 322 ​ ​ 989 ​ 6.00% ​ December 2019 PST long-term notes ​ ​ 1,279 ​ ​ 1,527 ​ 7.00% ​ November 2021 Total debt ​ ​ 1,601 ​ ​ 2,516 ​ ​ ​ ​ Less: current portion ​ ​ (869) ​ ​ (1,533) ​ ​ ​ ​ Total long-term debt, net ​ $ 732 ​ $ 983 ​ ​ ​ ​ ​ Revolving Credit Facility On September 12, 2014, the Company entered into a Third Amended and Restated Credit Agreement (the “Amended Agreement”). The Amended Agreement provided for a $300,000 revolving credit facility, which replaced the Company’s $100,000 asset-based credit facility and included a letter of credit subfacility, swing line subfacility and multicurrency subfacility. On June 5, 2019, the Company entered into the Fourth Amended and Restated Credit Agreement (the “2019 Credit Facility”). The 2019 Credit Facility provides for a senior secured revolving credit facility and it replaced and superseded the Amended Agreement. The 2019 Credit Facility has an accordion feature which allows the Company to increase the availability by up to upon the satisfaction of certain conditions and includes a letter of credit subfacility, swing line subfacility and multicurrency subfacility. The 2019 Credit Facility has a termination date of June 5, 2024. In the second quarter of 2019, the Company capitalized of deferred financing costs as a result of entering into the 2019 Credit Facility. In connection with the 2019 Credit Facility, the Company wrote off a portion of the previously recorded deferred financing costs of ​ The 2019 Credit Facility contains customary affirmative covenants and representations. The 2019 Credit Facility also contains customary negative covenants, which, among other things, are subject to certain exceptions, including restrictions on (i) indebtedness, (ii) liens, (iii) liquidations, mergers, consolidations and acquisitions, (iv) disposition of assets or subsidiaries, (v) affiliate transactions, (vi) creation or ownership of certain subsidiaries, partnerships and joint ventures, (vii) continuation of or change in business, (viii) restricted payments, (ix) prepayment of subordinated and junior lien indebtedness, (x) restrictions in agreements on dividends, intercompany loans and granting liens on the collateral, (xi) loans and investments, (xii) sale and leaseback transactions, (xiii) changes in organizational documents and fiscal year and (xiv) transactions with respect to bonding subsidiaries. The 2019 Credit Facility contains customary events of default, subject to customary thresholds and exceptions, including, among other things, (i) non-payment of principal and non-payment of interest and fees, (ii) a material inaccuracy of a representation or warranty at the time made, (iii) a failure to comply with any covenant, subject to customary grace periods in the case of certain affirmative covenants, (iv) cross default of other debt, final judgments and other adverse orders in excess of $30,000, (v) any loan document shall cease to be a legal, valid and binding agreement, (vi) certain uninsured losses or proceedings against assets with a value in excess of $30,000, (vii) ERISA events, (viii) a change of control, or (ix) bankruptcy or insolvency proceedings. ​ Borrowings outstanding on the 2019 Credit Facility and the Amended Agreement as applicable, were $103,500 and $96,000 at June 30, 2019 and December 31, 2018, respectively. ​ The Company was in compliance with all credit facility covenants at June 30, 2019 and December 31, 2018. ​ The Company also has outstanding letters of credit of $1,815 at both June 30, 2019 and December 31, 2018. ​ Debt PST maintains short-term obligations and long-term notes used for working capital purposes which have fixed or variable interest rates. The weighted-average interest rates of short term and long-term debt of PST at June 30, 2019 was 6.0% and 7.0%. Depending on the specific note, interest is payable either monthly or annually. Principal repayments on PST debt at June 30, 2019 are as follows: $869 from July 2019 through June 2020, $258 from July 2020 through December 2020 and $474 in 2021. The Company’s wholly-owned subsidiary located in Stockholm, Sweden, has an overdraft credit line which allows overdrafts on the subsidiary’s bank account up to a maximum level of 20,000 Swedish krona, or $2,155 and $2,259, at June 30, 2019 and December 31, 2018, respectively. At June 30, 2019 and December 31, 2018, there was no balance outstanding on this overdraft credit line. The Company’s wholly-owned subsidiary located in Suzhou, China, has two credit lines which allow up to a maximum borrowing level of 60,000 Chinese yuan, or $8,740 at June 30, 2019. At June 30, 2019 and December 31, 2018, there was no balance outstanding on these credit lines. The Company was in compliance with all debt covenants at June 30, 2019 and December 31, 2018.

Leases

Leases	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Leases	(8) Leases The Company has various cancelable and noncancelable leased assets within our three operating segments, including Control Devices, Electronics and PST, which include certain properties, vehicles and equipment of which are all classified as operating leases. Payments for these leases are generally fixed; however, several of our leases are composed of variable lease payments including index-based payments or inflation-based payments based on a Consumer Price Index (“CPI”) or other escalators. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. ​ Under Leases (Topic 842), the Company determines an arrangement is a lease when we have the right to control the use of identified property, plant or equipment for a period of time in exchange for consideration. Other than the leases that we have already identified, we are not aware of any material leases that have not yet commenced. For leases that have a calculated lease term of 12 months or less and do not include an option to purchase the underlying asset which we are reasonably certain to exercise, the Company has made the policy election to not apply the recognition requirements in Leases (Topic 842). For these short-term leases, the Company recognizes the lease payments in profit or loss on a straight-line basis over the lease term and variable lease payments in the period in which the obligation for those payments is incurred. ​ For the leases identified, ROU assets and lease liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, the Company used the calculated incremental borrowing rate based on the information available at the implementation date, and going forward at the commencement date, in determining the present value of lease payments. The Company will use the implicit rate when readily determinable. The ROU asset includes the carrying amount of the lease liability, plus (minus) any prepaid (accrued) lease payments, less the unamortized balance of lease incentives received. The Company’s lease terms may include options to extend or terminate the lease and such options are included in the lease term when it is reasonably certain that the Company will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Lease expenses are recognized within COGS, SG&A and design and development (“D&D”) costs in the condensed consolidated statements of operations. The Company has made the policy election to account for lease and non-lease components as a single lease component for all of its leases. ​ As a result of the Company’s election to apply the modified retrospective transition method at the effective date of the standard, information prior to January 1, 2019 has not been restated and continues to be reported under the accounting standards in effect for the period (ASC Topic 840). ​ The components of lease expense are as follows: ​ ​ ​ ​ ​ Three months ended ​ ​ ​ June 30, 2019 Operating lease cost ​ ​ $ 1,433 Short-term lease cost ​ ​ ​ 142 Variable lease cost ​ ​ ​ 84 Total lease cost ​ ​ $ 1,659 ​ ​ ​ ​ ​ ​ Balance Sheet information related to leases is as follows: ​ ​ ​ ​ ​ As of June 30, 2019 Assets: ​ ​ Operating lease right-of-use assets $ 18,970 ​ ​ ​ Liabilities: ​ ​ Operating lease current liability, included in other current liabilities ​ 4,576 Operating lease long-term liability ​ 14,565 Total leased liabilities $ 19,141 ​ ​ ​ ​ ​ Maturities of operating lease liabilities are as follows: ​ ​ ​ ​ ​ As of June 30, 2019 Year ending December 31, ​ ​ 2019 (1) $ 2,662 2020 ​ 4,767 2021 ​ 4,133 2022 ​ 3,178 2023 ​ 3,148 Thereafter ​ 4,422 Total future minimum lease payments $ 22,310 Less: imputed interest ​ (3,169) Total lease liabilities $ 19,141 ​ ​ ​ (1) For the remaining six months Weighted-average remaining lease term and discount rate is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of June 30, 2019 Weighted-average remaining lease term (in years) ​ ​ ​ ​ Operating leases ​ ​ ​ 5.16 ​ Weighted-average discount rate ​ ​ ​ ​ ​ Operating leases ​ ​ ​ 5.78 % ​ ​ ​ ​ ​ ​ ​ Other information: ​ ​ ​ ​ ​ Six months ended ​ ​ ​ June 30, 2019 Operating cash flows: ​ ​ ​ ​ Cash paid related to operating lease obligations ​ ​ $ 2,212 Non-cash activity: ​ ​ ​ ​ Right-of-use assets obtained in exchange for operating lease obligations ​ ​ $ 243 ​

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share	​ (9) Earnings Per Share Basic earnings per share was computed by dividing net income by the weighted-average number of Common Shares outstanding for each respective period. Diluted earnings per share was calculated by dividing net income by the weighted-average of all potentially dilutive Common Shares that were outstanding during the periods presented. Weighted-average Common Shares outstanding used in calculating basic and diluted earnings per share were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ Six months ended ​ ​ ​ ​ June 30, ​ June 30, ​ ​ ​ 2019 2018 2019 2018 ​ ​ Basic weighted-average Common Shares outstanding ​ 27,887,157 ​ 28,449,303 ​ 28,208,229 ​ 28,349,362 ​ ​ Effect of dilutive shares ​ 406,390 ​ 528,444 ​ 507,496 ​ 557,995 ​ ​ Diluted weighted-average Common Shares outstanding ​ 28,293,547 ​ 28,977,747 ​ 28,715,725 ​ 28,907,357 ​ ​ ​ There were 662,509 and 614,670 performance-based right to receive Common Shares outstanding at June 30, 2019 and 2018, respectively. The right to receive Common Shares are included in the computation of diluted earnings per share based on the number of Common Shares that would be issuable if the end of the quarter were the end of the contingency period.

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Loss by Component	6 Months Ended
	Jun. 30, 2019
Changes in Accumulated Other Comprehensive Loss by Component [Abstract]
Changes in Accumulated Other Comprehensive Loss by Component	(10) Equity and Accumulated Other Comprehensive Loss Common Share Repurchase ​ On October 26, 2018, the Company’s Board of Directors authorized the Company to repurchase up to $50,000 of Common Shares. Thereafter, on May 7, 2019, the Company entered into a Master Confirmation (the “Master Confirmation”) and a Supplemental Confirmation, together with the Master Confirmation, the Accelerated Share Repurchase Agreement (“ASR Agreement”), with Citibank N.A. (the “Bank”) to purchase Company Common Shares for a payment of $50,000 (the “Prepayment Amount”). Under the terms of the ASR Agreement, on May 7, 2019, the Company paid the Prepayment Amount to the Bank and received on May 8, 2019 an initial delivery of 1,349,528 Company Common Shares, which is approximately 80% of the total number of Company Common Shares expected to be repurchased under the ASR Agreement based on the closing price of the Company’s Common Shares on May 7, 2019. These Common Shares became treasury shares and were recorded as a ​ At final settlement, the Bank may be required to deliver additional Common Shares to the Company, or, under certain circumstances, the Company may be required to deliver Common Shares or may elect to make a cash payment to the Bank, based generally on the average of the daily volume-weighted average prices of the Company’s Common Shares during a term set forth in the ASR Agreement. The ASR Agreement contains provisions customary for agreements of this type, including provisions for adjustments to the transaction terms, the circumstances generally under which the ASR Agreement may be accelerated, extended or terminated early by the Bank and various acknowledgments, representations and warranties made by the parties to one another. The ASR Agreement expires on May 8, 2020. ​ Accumulated Other Comprehensive Loss Changes in accumulated other comprehensive loss for the three months ended June 30, 2019 and 2018 were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign ​ ​ Unrealized ​ ​ ​ ​ ​ ​ currency ​ ​ gain (loss) ​ ​ ​ ​ ​ translation ​ on derivatives ​ Total Balance at April 1, 2019 ​ $ (89,848) ​ $ 334 ​ $ (89,514) Other comprehensive income before reclassifications ​ ​ 2,311 ​ ​ 123 ​ ​ 2,434 Amounts reclassified from accumulated other comprehensive loss ​ ​ - ​ ​ (235) ​ ​ (235) Net other comprehensive (loss) income, net of tax ​ ​ 2,311 ​ ​ (112) ​ ​ 2,199 Balance at June 30, 2019 ​ $ (87,537) ​ $ 222 ​ $ (87,315) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at April 1, 2018 ​ $ (65,523) ​ $ 652 ​ $ (64,871) Other comprehensive (loss) income before reclassifications ​ ​ (17,421) ​ ​ 19 ​ ​ (17,402) Amounts reclassified from accumulated other comprehensive loss ​ ​ - ​ ​ (178) ​ ​ (178) Net other comprehensive (loss) income, net of tax ​ ​ (17,421) ​ ​ (159) ​ ​ (17,580) Balance at June 30, 2018 ​ $ (82,944) ​ $ 493 ​ $ (82,451) ​ ​ ​ Changes in accumulated other comprehensive loss for the six months ended June 30, 2019 and 2018 were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign ​ Unrealized ​ ​ ​ ​ ​ currency ​ gain (loss) ​ ​ ​ ​ translation on derivatives Total Balance at January 1, 2019 ​ $ (86,044) ​ $ 292 ​ $ (85,752) Other comprehensive (loss) income before reclassifications ​ ​ (1,493) ​ ​ 336 ​ ​ (1,157) Amounts reclassified from accumulated other comprehensive loss ​ ​ - ​ ​ (406) ​ ​ (406) Net other comprehensive (loss) income, net of tax ​ ​ (1,493) ​ ​ (70) ​ ​ (1,563) Balance at June 30, 2019 ​ ​ (87,537) ​ $ 222 ​ $ (87,315) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at January 1, 2018 ​ $ (69,417) ​ $ (143) ​ $ (69,560) Other comprehensive (loss) income before reclassifications ​ ​ (13,527) ​ ​ 933 ​ ​ (12,594) Amounts reclassified from accumulated other comprehensive loss ​ ​ - ​ ​ (297) ​ ​ (297) Net other comprehensive (loss) income, net of tax ​ ​ (13,527) ​ ​ 636 ​ ​ (12,891) Balance at June 30, 2018 ​ $ (82,944) ​ $ 493 ​ $ (82,451) ​

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies [Abstract]
Commitments and Contingencies	(11) Commitments and Contingencies From time to time we are subject to various legal actions and claims incidental to our business, including those arising out of breach of contracts, product warranties, product liability, patent infringement, regulatory matters and employment-related matters. The Company establishes accruals for matters which it believes that losses are probable and can be reasonably estimated. Although it is not possible to predict with certainty the outcome of these matters, the Company is of the opinion that the ultimate resolution of these matters will not have a material adverse effect on its consolidated results of operations or financial position. As a result of environmental studies performed at the Company’s former facility located in Sarasota, Florida, the Company became aware of soil and groundwater contamination at the site and engaged an environmental engineering consultant to develop a remediation and monitoring plan for the site. Soil remediation at the site was completed during the year ended December 31, 2010. A remedial action plan was approved by the Florida Department of Environmental Protection and groundwater remediation began in the fourth quarter of 2015. During the three and six months ended June 30, 2019 and 2018, environmental remediation costs incurred were immaterial. At June 30, 2019 and December 31, 2018, the Company accrued a remaining undiscounted liability of $85 and $111, respectively, related to future remediation costs which were recorded as a component of accrued expenses and other current liabilities in the condensed consolidated balance sheets. Costs associated with the recorded liability will be incurred to complete the groundwater remediation, with the balance relating to monitoring costs to be incurred over multiple years. The recorded liability is based on assumptions in the remedial action plan. Although the Company sold the Sarasota facility and related property in December 2011, the liability to remediate the site contamination remains the responsibility of the Company. Due to the ongoing site remediation, the Company is currently required to maintain a $1,489 letter of credit for the benefit of the buyer. The Company’s PST subsidiary has civil, labor and other non-income tax contingencies for which the likelihood of loss is deemed to be reasonably possible, but not probable, by the Company’s legal advisors in Brazil. As a result, no provision has been recorded with respect to these contingencies, which amounted to R$19,100 ($5,000) and R$29,700 ($7,600) at June 30, 2019 and December 31, 2018, respectively. An unfavorable outcome on these contingencies could result in significant cost to the Company and adversely affect its results of operations. Insurance Recoveries The Company incurred losses and incremental costs related to the damage to assets caused by a storm at its Mexican production facility in the fourth quarter of 2016 and pursued recovery of such costs under applicable insurance policies. Anticipated proceeds from insurance recoveries related to losses and incremental costs that have been incurred (“loss recoveries”) are recognized when receipt is probable. Anticipated proceeds from insurance recoveries in excess of the net book value of damaged property, plant and equipment (“insurance gain contingencies”) are recognized when all contingencies related to the claim have been resolved. Loss recoveries related to the damage of inventory and incremental costs included in costs of sales were not significant for the three months and six months ended June 30, 2019 and 2018, respectively. There were no loss recoveries and insurance gain contingencies recognized in the three and six months ended June 30, 2019 and 2018 related to the damage of property, plant and equipment included within SG&A expense. As of December 31, 2017, the Company had confirmation of the open insurance claim and recorded a receivable of $1,644. The cash payment was subsequently collected in January 2018. Cash proceeds related to the damage of inventory and incremental costs were $241 for the six months ended June 30, 2018 and are included in cash flows from operating activities. Cash proceeds related to the damage of property, plant and equipment of $1,403 for the six months ended June 30, 2018, were included in cash flows from investing activities. There were no cash proceeds received during the six months ended June 30, 2019. Product Warranty and Recall Amounts accrued for product warranty and recall claims are established based on the Company’s best estimate of the amounts necessary to settle existing and future claims on products sold as of the balance sheet dates. These accruals are based on several factors including past experience, production changes, industry developments and various other considerations including insurance coverage. The Company can provide no assurances that it will not experience material claims or that it will not incur significant costs to defend or settle such claims beyond the amounts accrued or beyond what the Company may recover from its suppliers. The current portion of product warranty and recall is included as a component of accrued expenses and other current liabilities in the condensed consolidated balance sheets. Product warranty and recall included $3,132 and $3,283 of a long-term liability at June 30, 2019 and December 31, 2018, respectively, which is included as a component of other long-term liabilities in the condensed consolidated balance sheets. The following provides a reconciliation of changes in product warranty and recall liability: ​ ​ ​ ​ ​ ​ ​ Six months ended June 30, 2019 2018 Product warranty and recall at beginning of period ​ $ 10,494 ​ $ 9,979 Accruals for warranties established during period ​ ​ 3,506 ​ ​ 2,791 Aggregate changes in pre-existing liabilities due to claim developments ​ ​ 1,687 ​ ​ 1,569 Settlements made during the period ​ ​ (4,442) ​ ​ (2,876) Foreign currency translation ​ ​ (189) ​ ​ (525) Product warranty and recall at end of period ​ $ 11,056 ​ $ 10,938 ​

Business Realignment and Restru

Business Realignment and Restructuring	6 Months Ended
	Jun. 30, 2019
Business Realignment and Restructuring [Abstract]
Business Realignment and Restructuring	(12) Business Realignment and Restructuring On January 10, 2019, the Company committed to a restructuring plan that will result in the closure of the Canton, Massachusetts facility (“Canton Facility”) which is expected by March 31, 2020 and the consolidation of manufacturing operations at that site into other Company locations (“Canton Restructuring”). Company management informed employees at the Canton Facility of this restructuring decision on January 11, 2019. This restructuring action will result in the closure of the Canton facility and the termination of the employment of Canton Facility employees. The estimated costs for the Canton Restructuring include employee severance and termination costs, contract terminations costs, professional fees, the non-cash write-off of impaired fixed assets and other related costs. The Company recognized expense of $3,443 and $5,668, respectively, for the three and six months ended June 30, 2019 as a result of these actions for employee termination benefits and other restructuring related costs. For the three months ended June 30, 2019 severance and other restructuring related costs of $2,354, $280 and $809 were recognized in COGS, SG&A and D&D, respectively, in the condensed consolidated statement of operations. For the six months ended June 30, 2019 severance and other related restructuring costs of $3,606, $475 and $1,587 were recognized in COGS, SG&A and D&D, respectively, in the condensed consolidated statement of operations. The estimated additional cost of the Canton Facility restructuring plan, that will impact the Control Devices segment, is between $2,700 and $3,900 and will be incurred through 2020. The expenses for the 2019 Canton Restructuring that relate to the Control Devices reportable segment include the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accrual as of ​ 2019 Charge ​ ​ Utilization ​ Accrual as of ​ ​ January 1, 2019 ​ to Expense ​ Cash ​ Non-Cash ​ June 30, 2019 Employee termination benefits ​ $ - ​ $ 4,603 ​ $ (459) ​ $ - ​ $ 4,144 Other related costs ​ ​ - ​ ​ 1,065 ​ ​ (1,065) ​ ​ - ​ ​ - Total ​ $ - ​ $ 5,668 ​ $ (1,524) ​ $ - ​ $ 4,144 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ In the fourth quarter of 2018, the Company undertook restructuring actions for the Electronics segment affecting the European Aftermarket business and China operations. The Company recognized expense of $96 and $312, respectively, for the three and six months ended June 30, 2019 as a result of these actions for severance, contract termination costs, accelerated depreciation of fixed assets and other related costs. Electronics segment restructuring costs were recognized in SG&A in the condensed consolidated statement of operations for the three and six months ended June 30, 2019. The Company expects to incur approximately $760 of additional restructuring costs related to these actions through 2020. ​ ​ The expenses for the 2019 restructuring activities that relate to the Electronics reportable segment include the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accrual as of ​ 2019 Charge ​ ​ Utilization ​ Accrual as of ​ ​ January 1, 2019 ​ to Expense ​ Cash ​ Non-Cash ​ June 30, 2019 Employee termination benefits ​ $ 520 ​ $ (30) ​ $ (441) ​ $ 3 ​ $ 52 Accelerated depreciation ​ ​ - ​ ​ 195 ​ ​ - ​ ​ (195) ​ ​ - Contract termination costs ​ ​ 17 ​ ​ 27 ​ ​ (44) ​ ​ - ​ ​ - Other related costs ​ ​ 119 ​ ​ 120 ​ ​ (239) ​ ​ - ​ ​ - Total ​ $ 656 ​ $ 312 ​ $ (724) ​ $ (192) ​ $ 52 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ In addition to the specific restructuring activities, the Company regularly evaluates the performance of its businesses and cost structures, including personnel, and makes necessary changes thereto in order to optimize its results. The Company also evaluates the required skill sets of its personnel and periodically makes strategic changes. As a consequence of these actions, the Company incurs severance related costs which are referred to as business realignment charges. Business realignment charges by reportable segment were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ Six months ended ​ ​ ​ June 30, ​ ​ June 30, ​ 2019 2018 ​ 2019 2018 Control Devices (A) ​ $ 27 ​ $ 128 ​ $ 549 ​ $ 128 Electronics (B) ​ ​ - ​ ​ 295 ​ ​ - ​ ​ 295 PST (C) ​ ​ - ​ ​ 97 ​ ​ - ​ ​ 319 Unallocated Corporate (D) ​ ​ - ​ ​ - ​ ​ 613 ​ ​ - Total business realignment charges ​ $ 27 ​ $ 520 ​ $ 1,162 ​ $ 742 (A) Severance costs for the three months ended June 30, 2019 related to COGS were $27 . Severance costs for the six months ended June 30, 2019 related to SG&A, D&D and COGS were $512 , $10 and $27 , respectively. Severance costs for the three and six months ended June 30, 2018 related to D&D were $128 . (B) Severance costs for the three and six months ended June 30, 2018 related to SG&A were $295 . (C) Severance costs for the three and six months ended June 30, 2018 related to SG&A were $71 and $293, respectively. Severance costs for the three and six months ended June 30, 2018 related to COGS were $26. (D) Severance costs for the six months ended June 30, 2019 related to SG&A were $613 . Business realignment charges classified by statement of operations line item were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ Six months ended ​ ​ June 30, ​ ​ June 30, ​ 2019 2018 ​ ​ 2019 ​ 2018 Cost of goods sold ​ $ 27 ​ $ 26 ​ $ 27 ​ $ 26 Selling, general and administrative ​ ​ - ​ ​ 366 ​ ​ 1,125 ​ ​ 588 Design and development ​ ​ - ​ ​ 128 ​ ​ 10 ​ ​ 128 Total business realignment charges ​ $ 27 ​ $ 520 ​ $ 1,162 ​ $ 742 ​

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Taxes [Abstract]
Income Taxes	(13) Income Taxes The Company recognized income tax expense of $9,066 and $3,820 for U.S. federal, state and foreign income taxes for the three months ended June 30, 2019 and 2018, respectively. The increase in income tax expense for the three months ended June 30, 2019 compared to the same period for 2018 was primarily related to the sale of Non-core Products on April 1, 2019. The effective tax rate decreased to 18.6% in the second quarter of 2019 from 20.2% in the second quarter of 2018 primarily due to the impact of certain tax incentives, which did not impact the second quarter of 2018. The Company recognized income tax expense of $10,901 and $7,053 for U.S. federal, state and foreign income taxes for the six months ended June 30, 2019 and 2018, respectively. The increase in income tax expense for the six months ended June 30, 2019 compared to the same period for 2018 was primarily related to the sale of Non-core Products on April 1, 2019. The effective tax rate decreased to The Company has concluded that it is reasonably possible that its future provision for income taxes may be significantly impacted by changes to valuation allowance in certain countries within the following twelve months.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Segment Reporting	(14) Segment Reporting Operating segments are defined as components of an enterprise that are evaluated regularly by the Company’s chief operating decision maker in deciding how to allocate resources and in assessing performance. The Company’s chief operating decision maker is the Chief Executive Officer. The Company has three reportable segments, Control Devices, Electronics and PST, which also represent its operating segments. The Control Devices reportable segment produces sensors, switches, valves and actuators. The Electronics reportable segment produces electronic instrument clusters, electronic control units, driver information systems and camera-based vision systems, monitors and related products. The PST reportable segment designs and manufactures electronic vehicle security alarms, convenience accessories, vehicle tracking devices and monitoring services and in-vehicle audio and video devices. The accounting policies of the Company’s reportable segments are the same as those described in Note 2, “Summary of Significant Accounting Policies” of the Company’s 2018 Form 10K The financial information presented below is for our three reportable operating segments and includes adjustments for unallocated corporate costs and intercompany eliminations, where applicable. Such costs and eliminations do not meet the requirements for being classified as an operating segment. Corporate costs include various support functions, such as corporate accounting/finance, executive administration, human resources, information technology and legal. ​ A summary of financial information by reportable segment is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ Six months ended ​ ​ ​ June 30, ​ June 30, ​ ​ 2019 2018 2019 2018 ​ Net Sales: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ $ 114,067 ​ $ 109,956 ​ $ 224,186 ​ $ 225,313 ​ Inter-segment sales ​ ​ 2,078 ​ ​ 2,481 ​ ​ 3,939 ​ ​ 4,662 ​ Control Devices net sales ​ ​ 116,145 ​ ​ 112,437 ​ ​ 228,125 ​ ​ 229,975 ​ Electronics (D) ​ ​ 91,560 ​ ​ 90,313 ​ ​ 182,406 ​ ​ 180,341 ​ Inter-segment sales ​ ​ 10,325 ​ ​ 9,771 ​ ​ 19,047 ​ ​ 20,243 ​ Electronics net sales ​ ​ 101,885 ​ ​ 100,084 ​ ​ 201,453 ​ ​ 200,584 ​ PST ​ ​ 16,614 ​ ​ 20,333 ​ ​ 33,946 ​ ​ 40,878 ​ Inter-segment sales ​ ​ - ​ ​ - ​ ​ 6 ​ ​ 2 ​ PST net sales ​ ​ 16,614 ​ ​ 20,333 ​ ​ 33,952 ​ ​ 40,880 ​ Eliminations ​ ​ (12,403) ​ ​ (12,252) ​ ​ (22,992) ​ ​ (24,907) ​ Total net sales ​ $ 222,241 ​ $ 220,602 ​ $ 440,538 ​ $ 446,532 ​ Operating Income (Loss): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ $ 44,367 ​ $ 17,160 ​ $ 56,315 ​ $ 35,039 ​ Electronics ​ ​ 7,555 ​ ​ 8,276 ​ ​ 16,586 ​ ​ 16,156 ​ PST ​ ​ 6,414 ​ ​ 735 ​ ​ 7,084 ​ ​ 885 ​ Unallocated Corporate (A) ​ ​ (9,150) ​ ​ (6,990) ​ ​ (19,100) ​ ​ (16,052) ​ Total operating income ​ $ 49,186 ​ $ 19,181 ​ $ 60,885 ​ $ 36,028 ​ Depreciation and Amortization: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ $ 3,197 ​ $ 2,897 ​ $ 6,291 ​ $ 5,692 ​ Electronics ​ ​ 2,510 ​ ​ 2,252 ​ ​ 4,907 ​ ​ 4,543 ​ PST ​ ​ 1,695 ​ ​ 1,740 ​ ​ 3,220 ​ ​ 4,245 ​ Unallocated Corporate ​ ​ 216 ​ ​ 199 ​ ​ 429 ​ ​ 396 ​ Total depreciation and amortization (B) ​ $ 7,618 ​ $ 7,088 ​ $ 14,847 ​ $ 14,876 ​ Interest (Income) Expense, net: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ $ 195 ​ $ 18 ​ $ 377 ​ $ 37 ​ Electronics ​ ​ 63 ​ ​ 23 ​ ​ 119 ​ ​ 57 ​ PST ​ ​ (59) ​ ​ 194 ​ ​ 49 ​ ​ 532 ​ Unallocated Corporate ​ ​ 802 ​ ​ 935 ​ ​ 1,459 ​ ​ 1,898 ​ Total interest expense, net ​ $ 1,001 ​ $ 1,170 ​ $ 2,004 ​ $ 2,524 ​ Capital Expenditures: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ $ 4,042 ​ $ 3,312 ​ $ 7,534 ​ $ 9,058 ​ Electronics ​ ​ 3,356 ​ ​ 1,394 ​ ​ 7,094 ​ ​ 4,167 ​ PST ​ ​ 805 ​ ​ 696 ​ ​ 1,624 ​ ​ 1,955 ​ Unallocated Corporate (C) ​ ​ 592 ​ ​ 938 ​ ​ 1,227 ​ ​ 1,665 ​ Total capital expenditures ​ $ 8,795 ​ $ 6,340 ​ $ 17,479 ​ $ 16,845 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ ​ ​ ​ ​ ​ ​ 2019 2018 ​ Total Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ ​ ​ ​ ​ ​ ​ $ 189,725 ​ $ 175,708 ​ Electronics ​ ​ ​ ​ ​ ​ ​ ​ 277,961 ​ ​ 265,838 ​ PST ​ ​ ​ ​ ​ ​ ​ ​ 90,707 ​ ​ 81,002 ​ Corporate (C) ​ ​ ​ ​ ​ ​ ​ ​ 360,870 ​ ​ 359,837 ​ Eliminations ​ ​ ​ ​ ​ ​ ​ ​ (323,216) ​ ​ (322,866) ​ Total assets ​ ​ ​ ​ ​ ​ ​ $ 596,047 ​ $ 559,519 ​ ​ The following tables present net sales and long-term assets for each of the geographic areas in which the Company operates: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ Six months ended ​ ​ ​ June 30, ​ June 30, ​ ​ 2019 2018 2019 2018 ​ Net Sales: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ North America ​ $ 123,293 ​ $ 120,885 ​ $ 242,660 ​ $ 245,314 ​ South America ​ ​ 16,614 ​ ​ 20,333 ​ ​ 33,946 ​ ​ 40,878 ​ Europe and Other ​ ​ 82,334 ​ ​ 79,384 ​ ​ 163,932 ​ ​ 160,340 ​ Total net sales ​ $ 222,241 ​ $ 220,602 ​ $ 440,538 ​ $ 446,532 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ ​ ​ ​ ​ ​ ​ 2019 2018 ​ Long-term Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ North America ​ ​ ​ ​ ​ ​ ​ $ 92,596 ​ $ 86,763 ​ South America ​ ​ ​ ​ ​ ​ ​ ​ 44,220 ​ ​ 45,408 ​ Europe and Other ​ ​ ​ ​ ​ ​ ​ ​ 123,142 ​ ​ 107,171 ​ Total long-term assets ​ ​ ​ ​ ​ ​ ​ $ 259,958 ​ $ 239,342 ​ (A) Unallocated Corporate expenses include, among other items, accounting/finance, human resources, information technology and legal costs as well as share-based compensation. (B) These amounts represent depreciation and amortization on property, plant and equipment and certain intangible assets. (C) Assets located at Corporate consist primarily of cash, intercompany loan receivables, fixed assets for the corporate headquarter building, information technology assets, equity investments and investments in subsidiaries. ​ ​ ​

Investments

Investments	6 Months Ended
	Jun. 30, 2019
Investments [Abstract]
Investments	(15) Investments Minda Stoneridge Instruments Ltd. The Company has a 49% equity interest in Minda Stoneridge Instruments Ltd. (“MSIL”), a company based in India that manufactures electronics, instrumentation equipment and sensors primarily for the motorcycle, commercial vehicle and automotive markets. The investment is accounted for under the equity method of accounting. The Company’s investment in MSIL, recorded as a component of investments and other long-term assets, net on the condensed consolidated balance sheets, was $12,396 and $11,288 at June 30, 2019 and December 31, 2018, respectively. Equity in earnings of MSIL included in the condensed consolidated statements of operations was $548 and $665, for the three months ended June 30, 2019 and 2018, respectively. Equity in earnings of MSIL included in the condensed consolidated statements of operations was $912 and $1,186, for the six months ended June 30, 2019 and 2018, respectively. PST Eletrônica Ltda. The Company had a 74% controlling interest in PST from December 31, 2011 through May 15, 2017. On May 16, 2017, the Company acquired the remaining 26% noncontrolling interest in PST. As part of the acquisition agreement, the Company will be required to pay additional earn-out consideration, which is not capped, based on PST’s financial performance in either 2020 or 2021. See Note 5 for the fair value and foreign currency adjustments of the earn-out consideration for the current and prior periods. PST has dividends payable to former noncontrolling interest holders of R$23,783 Brazilian real ($6,175) and R$23,204 Brazilian real ($5,980) as of June 30, 2019 and December 31, 2018, respectively. The dividends payable balance includes R$580 Brazilian real ($150) and R$419 Brazilian real ($108) in monetary correction for the six months ended June 30, 2019 and 2018, respectively. The dividend is payable on or before January 1, 2020, and is subject to monetary correction based on the Brazilian National Extended Consumer Price inflation index (“IPCA”). The dividend payable related to PST is recorded within other current liabilities on the condensed consolidated balance sheet. Other Investments In December 2018, the Company entered into an agreement to make a $10,000 investment in a fund managed by Autotech Ventures (“Autotech”), a venture capital firm focused on ground transportation technology which is accounted for in accordance with ASU 2016-01, “Financial Instruments – Overall (Subtopic 825-10)”. This investment does not have a readily determinable fair value and is measured at cost, less impairments, adjusted for observable price changes in orderly transactions for identical or similar investments of the same issuer. The Company’s to the Autotech fund during the six months ended June 30, 2019. The Autotech investment recorded in investments and other long-term assets in the condensed consolidated balance sheets was

Disposal of Non-Core Products

Disposal of Non-Core Products	6 Months Ended
	Jun. 30, 2019
Disposal of Non-Core Products [Abstract]
Disposal of Non-Core Products	​ ​ ​ ​ ​ ​ (16) Disposal of Non-Core Products On April 1, 2019, the Company entered into an Asset Purchase Agreement (the “APA”) by and among the Company, the Company’s wholly owned subsidiary, Stoneridge Control Devices, Inc. (“SCD”), and Standard Motor Products, Inc. (“SMP”). On the same day pursuant to the APA, in exchange for product lines and assets related to certain non-core switches and connectors (the “Non-core Products”). the Company and SMP also entered into certain ancillary agreements, including a transition services agreement, a contract manufacturing agreement and a supply agreement, pursuant to which the Company will provide and be compensated for certain manufacturing, transitional, and administrative and support services to SMP on a short-term basis. The products related to the Non-core Products are currently manufactured in Juarez, Mexico and Canton, Massachusetts, and include ball switches, ignition switches, rotary switches, courtesy lamps, toggle switches, headlamp switches and other related components. ​ During the three months ended June 30, 2019 the Company’s Control Devices segment recognized net sales and costs of goods sold of $4,160 and $2,775, respectively, for the one-time sale of Non-core Product finished goods inventory and a gain on disposal of $33,921 for the sale of fixed assets, intellectual property and customer lists associated with the Non-core Products less transaction costs. During the three months ended March 31, 2019, the Company recognized transaction costs associated with the disposal of Control Devices’ Non-core Products of ​ During the three months ended June 30, 2019, the Company received $675 for services provided pursuant to the transition services agreement which was recognized as a reduction in SG&A. The Company produced and sold Non-core finished goods inventory at cost to SMP of $9,054 pursuant to the contract manufacturing agreement which was recognized as both net sales and cost of goods sold. ​ Non-core Products net sales, including sales of $9,054 to SMP pursuant to the contract manufacturing agreement, and operating income was $13,214 and $3,373, for the three months ended June 30, 2019, respectively, and $11,249 and $2,317, for the three months ended June 30, 2018, respectively. Non-core Products net sales and operating income was $24,310 and $3,373, for the six months ended June 30, 2019, respectively, and $23,129 and $4,725 , for the six months ended June 30, 2018, respectively. ​ ​

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2019
Revenue [Abstract]
Revenue by Segment and Geographical Location	The following tables disaggregate our revenue by reportable segment and geographical location (1) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ Electronics ​ PST ​ Consolidated Three months ended June 30 2019 2018 2019 2018 2019 2018 2019 2018 Net Sales: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ North America ​ $ 98,066 ​ $ 98,564 ​ $ 25,227 ​ $ 22,321 ​ $ - ​ $ - ​ $ 123,293 ​ $ 120,885 South America ​ - ​ - ​ - ​ - ​ 16,614 ​ 20,333 ​ 16,614 ​ 20,333 Europe ​ 5,456 ​ 3,669 ​ 64,798 ​ 67,411 ​ - ​ - ​ 70,254 ​ 71,080 Asia Pacific ​ 10,545 ​ 7,723 ​ 1,535 ​ 581 ​ - ​ - ​ 12,080 ​ 8,304 Total net sales ​ $ 114,067 ​ $ 109,956 ​ $ 91,560 ​ $ 90,313 ​ $ 16,614 ​ $ 20,333 ​ $ 222,241 ​ $ 220,602 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ Electronics ​ PST ​ Consolidated Six months ended June 30 2019 2018 2019 2018 2019 2018 2019 2018 Net Sales: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ North America ​ $ 194,786 ​ $ 203,007 ​ $ 47,874 ​ $ 42,307 ​ $ - ​ $ - ​ $ 242,660 ​ $ 245,314 South America ​ - ​ - ​ - ​ - ​ 33,946 ​ 40,878 ​ 33,946 ​ 40,878 Europe ​ 9,868 ​ 6,560 ​ 131,740 ​ 135,955 ​ - ​ - ​ 141,608 ​ 142,515 Asia Pacific ​ 19,532 ​ 15,746 ​ 2,792 ​ 2,079 ​ - ​ - ​ 22,324 ​ 17,825 Total net sales ​ $ 224,186 ​ $ 225,313 ​ $ 182,406 ​ $ 180,341 ​ $ 33,946 ​ $ 40,878 ​ $ 440,538 ​ $ 446,532 (1) Company sales based on geographic location are where the sale originates not where the customer is located.

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2019
Inventories [Abstract]
Schedule of Inventory, Current	Inventory cost includes material, labor and overhead. Inventories consisted of the following:

Financial Instruments and Fai_2

Financial Instruments and Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2019
Financial Instruments and Fair Value Measurements [Abstract]
Notional Amounts and Fair Values of Derivative Instruments in the Consolidated Balance	The notional amounts and fair values of derivative instruments in the condensed consolidated balance sheets were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Prepaid expenses ​ Accrued expenses and ​ ​ Notional amounts (A) ​ and other current assets ​ other current liabilities ​ ​ June 30, ​ December 31, ​ June 30, ​ December 31, ​ June 30, ​ December 31, ​ 2019 2018 2019 2018 2019 2018 Derivatives designated as hedging instruments: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash flow hedges: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Forward currency contracts ​ $ 2,953 ​ $ 9,017 ​ $ 281 ​ $ 370 ​ $ - ​ $ - ​ (A) Notional amounts represent the gross contract of the derivatives outstanding in U.S. dollars.
Amounts Recorded for the Cash Flow Hedges in Other Comprehensive Income (Loss) in Shareholders' Equity and in Net Income	Gross amounts recorded for the cash flow hedges in other comprehensive income (loss) and in net income for the three months ended June 30 are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gain reclassified from ​ ​ Gain recorded in other ​ other comprehensive income ​ ​ comprehensive income (loss) ​ (loss) into net income (A) ​ 2019 2018 2019 2018 Derivatives designated as cash flow hedges: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Forward currency contracts ​ $ 157 ​ $ 24 ​ $ 299 ​ $ 224 ​ Gross amounts recorded for the cash flow hedges in other comprehensive income (loss) and in net income for the six months ended June 30 are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gains reclassified from ​ ​ Gain recorded in other ​ other comprehensive income ​ ​ comprehensive income (loss) ​ (loss) into net income (A) ​ 2019 2018 2019 2018 Derivatives designated as cash flow hedges: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Forward currency contracts ​ $ 426 ​ $ 1,182 ​ $ 515 ​ $ 375 (A) Gains reclassified from other comprehensive income (loss) into net income were recognized in cost of goods sold (“COGS”) in the Company’s condensed consolidated statements of operations.
Schedule of Assets and Liabilities that are Measured at Fair Value on a Recurring Basis	The following table presents our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the three levels of the fair value hierarchy based on the reliability of inputs used. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ ​ December 31, ​ ​ ​ ​ ​ 2019 ​ 2018 ​ ​ ​ ​ ​ Fair values estimated using ​ ​ ​ ​ ​ ​ ​ ​ Level 1 ​ Level 2 ​ Level 3 ​ ​ ​ ​ Fair value inputs inputs inputs Fair value Financial assets carried at fair value: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Forward currency contracts ​ $ 281 ​ $ - ​ $ 281 ​ $ - ​ $ 370 Total financial assets carried at fair value ​ $ 281 ​ $ - ​ $ 281 ​ $ - ​ $ 370 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial liabilities carried at fair value: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Earn-out consideration ​ $ 11,057 ​ $ - ​ $ - ​ $ 11,057 ​ $ 18,672 Total financial liabilities carried at fair value ​ $ 11,057 ​ $ - ​ $ - ​ $ 11,057 ​ $ 18,672
Summary of the Change in Fair Value of the Level 3 Financial Liabilities Related to Contingent Consideration	The following table sets forth a summary of the change in fair value of the Company’s Level 3 financial liabilities related to earn-out consideration that are measured at fair value on a recurring basis. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Orlaco PST Total Balance at December 31, 2018 ​ $ 8,602 ​ $ 10,070 ​ $ 18,672 Change in fair value ​ ​ - ​ ​ 921 ​ ​ 921 Foreign currency adjustments ​ ​ (128) ​ ​ 66 ​ ​ (62) Earn-out consideration cash payment ​ ​ (8,474) ​ ​ - ​ ​ (8,474) Balance at June 30, 2019 ​ $ - ​ $ 11,057 ​ $ 11,057 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Orlaco PST Total Balance at December 31, 2017 ​ $ 8,637 ​ $ 12,109 ​ $ 20,746 Change in fair value ​ ​ 369 ​ ​ 1,048 ​ ​ 1,417 Foreign currency adjustments ​ ​ (244) ​ ​ (1,873) ​ ​ (2,117) Balance at June 30, 2018 ​ $ 8,762 ​ $ 11,284 ​ $ 20,046

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2019
Debt [Abstract]
Schedule of Debt	Debt consisted of the following at June 30, 2019 and December 31, 2018: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ Interest rates at ​ ​ ​ 2019 2018 June 30, 2019 Maturity Revolving Credit Facility ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Credit Facility ​ $ 103,500 ​ $ 96,000 ​ 3.28% - 3.45% ​ June 2024 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Debt ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ PST short-term obligations ​ ​ 322 ​ ​ 989 ​ 6.00% ​ December 2019 PST long-term notes ​ ​ 1,279 ​ ​ 1,527 ​ 7.00% ​ November 2021 Total debt ​ ​ 1,601 ​ ​ 2,516 ​ ​ ​ ​ Less: current portion ​ ​ (869) ​ ​ (1,533) ​ ​ ​ ​ Total long-term debt, net ​ $ 732 ​ $ 983 ​ ​ ​ ​ ​

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Schedule of components of lease expense	The components of lease expense are as follows: ​ ​ ​ ​ ​ Three months ended ​ ​ ​ June 30, 2019 Operating lease cost ​ ​ $ 1,433 Short-term lease cost ​ ​ ​ 142 Variable lease cost ​ ​ ​ 84 Total lease cost ​ ​ $ 1,659 ​ ​ ​ ​ ​
Schedule of supplemental balance sheet information	Balance Sheet information related to leases is as follows: ​ ​ ​ ​ ​ As of June 30, 2019 Assets: ​ ​ Operating lease right-of-use assets $ 18,970 ​ ​ ​ Liabilities: ​ ​ Operating lease current liability, included in other current liabilities ​ 4,576 Operating lease long-term liability ​ 14,565 Total leased liabilities $ 19,141 ​ ​ ​
Schedule of maturities of lease liabilities	Maturities of operating lease liabilities are as follows: ​ ​ ​ ​ ​ As of June 30, 2019 Year ending December 31, ​ ​ 2019 (1) $ 2,662 2020 ​ 4,767 2021 ​ 4,133 2022 ​ 3,178 2023 ​ 3,148 Thereafter ​ 4,422 Total future minimum lease payments $ 22,310 Less: imputed interest ​ (3,169) Total lease liabilities $ 19,141 ​ ​ ​ (1) For the remaining six months
Schedule of weighted-average remaining lease term, discount rate and other information	Weighted-average remaining lease term and discount rate is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of June 30, 2019 Weighted-average remaining lease term (in years) ​ ​ ​ ​ Operating leases ​ ​ ​ 5.16 ​ Weighted-average discount rate ​ ​ ​ ​ ​ Operating leases ​ ​ ​ 5.78 % ​ ​ ​ ​ ​ ​
Schedule of other information related to leases	Other information: ​ ​ ​ ​ ​ Six months ended ​ ​ ​ June 30, 2019 Operating cash flows: ​ ​ ​ ​ Cash paid related to operating lease obligations ​ ​ $ 2,212 Non-cash activity: ​ ​ ​ ​ Right-of-use assets obtained in exchange for operating lease obligations ​ ​ $ 243 ​

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Schedule of Weighted-Average Number of Shares	Weighted-average Common Shares outstanding used in calculating basic and diluted earnings per share were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ Six months ended ​ ​ ​ ​ June 30, ​ June 30, ​ ​ ​ 2019 2018 2019 2018 ​ ​ Basic weighted-average Common Shares outstanding ​ 27,887,157 ​ 28,449,303 ​ 28,208,229 ​ 28,349,362 ​ ​ Effect of dilutive shares ​ 406,390 ​ 528,444 ​ 507,496 ​ 557,995 ​ ​ Diluted weighted-average Common Shares outstanding ​ 28,293,547 ​ 28,977,747 ​ 28,715,725 ​ 28,907,357 ​ ​

Changes in Accumulated Other _2

Changes in Accumulated Other Comprehensive Loss by Component (Tables)	6 Months Ended
	Jun. 30, 2019
Changes in Accumulated Other Comprehensive Loss by Component [Abstract]
Changes in Accumulated Other Comprehensive Loss by Component	Changes in accumulated other comprehensive loss for the three months ended June 30, 2019 and 2018 were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign ​ ​ Unrealized ​ ​ ​ ​ ​ ​ currency ​ ​ gain (loss) ​ ​ ​ ​ ​ translation ​ on derivatives ​ Total Balance at April 1, 2019 ​ $ (89,848) ​ $ 334 ​ $ (89,514) Other comprehensive income before reclassifications ​ ​ 2,311 ​ ​ 123 ​ ​ 2,434 Amounts reclassified from accumulated other comprehensive loss ​ ​ - ​ ​ (235) ​ ​ (235) Net other comprehensive (loss) income, net of tax ​ ​ 2,311 ​ ​ (112) ​ ​ 2,199 Balance at June 30, 2019 ​ $ (87,537) ​ $ 222 ​ $ (87,315) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at April 1, 2018 ​ $ (65,523) ​ $ 652 ​ $ (64,871) Other comprehensive (loss) income before reclassifications ​ ​ (17,421) ​ ​ 19 ​ ​ (17,402) Amounts reclassified from accumulated other comprehensive loss ​ ​ - ​ ​ (178) ​ ​ (178) Net other comprehensive (loss) income, net of tax ​ ​ (17,421) ​ ​ (159) ​ ​ (17,580) Balance at June 30, 2018 ​ $ (82,944) ​ $ 493 ​ $ (82,451) ​ ​ ​ Changes in accumulated other comprehensive loss for the six months ended June 30, 2019 and 2018 were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign ​ Unrealized ​ ​ ​ ​ ​ currency ​ gain (loss) ​ ​ ​ ​ translation on derivatives Total Balance at January 1, 2019 ​ $ (86,044) ​ $ 292 ​ $ (85,752) Other comprehensive (loss) income before reclassifications ​ ​ (1,493) ​ ​ 336 ​ ​ (1,157) Amounts reclassified from accumulated other comprehensive loss ​ ​ - ​ ​ (406) ​ ​ (406) Net other comprehensive (loss) income, net of tax ​ ​ (1,493) ​ ​ (70) ​ ​ (1,563) Balance at June 30, 2019 ​ ​ (87,537) ​ $ 222 ​ $ (87,315) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at January 1, 2018 ​ $ (69,417) ​ $ (143) ​ $ (69,560) Other comprehensive (loss) income before reclassifications ​ ​ (13,527) ​ ​ 933 ​ ​ (12,594) Amounts reclassified from accumulated other comprehensive loss ​ ​ - ​ ​ (297) ​ ​ (297) Net other comprehensive (loss) income, net of tax ​ ​ (13,527) ​ ​ 636 ​ ​ (12,891) Balance at June 30, 2018 ​ $ (82,944) ​ $ 493 ​ $ (82,451) ​

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies [Abstract]
Schedule of Product Warranty and Recall Liability	The following provides a reconciliation of changes in product warranty and recall liability: ​ ​ ​ ​ ​ ​ ​ Six months ended June 30, 2019 2018 Product warranty and recall at beginning of period ​ $ 10,494 ​ $ 9,979 Accruals for warranties established during period ​ ​ 3,506 ​ ​ 2,791 Aggregate changes in pre-existing liabilities due to claim developments ​ ​ 1,687 ​ ​ 1,569 Settlements made during the period ​ ​ (4,442) ​ ​ (2,876) Foreign currency translation ​ ​ (189) ​ ​ (525) Product warranty and recall at end of period ​ $ 11,056 ​ $ 10,938 ​

Business Realignment and Rest_2

Business Realignment and Restructuring (Tables)	6 Months Ended
	Jun. 30, 2019
Schedule of Restructuring and Related Costs	Business realignment charges by reportable segment were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ Six months ended ​ ​ ​ June 30, ​ ​ June 30, ​ 2019 2018 ​ 2019 2018 Control Devices (A) ​ $ 27 ​ $ 128 ​ $ 549 ​ $ 128 Electronics (B) ​ ​ - ​ ​ 295 ​ ​ - ​ ​ 295 PST (C) ​ ​ - ​ ​ 97 ​ ​ - ​ ​ 319 Unallocated Corporate (D) ​ ​ - ​ ​ - ​ ​ 613 ​ ​ - Total business realignment charges ​ $ 27 ​ $ 520 ​ $ 1,162 ​ $ 742 (A) Severance costs for the three months ended June 30, 2019 related to COGS were $27 . Severance costs for the six months ended June 30, 2019 related to SG&A, D&D and COGS were $512 , $10 and $27 , respectively. Severance costs for the three and six months ended June 30, 2018 related to D&D were $128 . (B) Severance costs for the three and six months ended June 30, 2018 related to SG&A were $295 . (C) Severance costs for the three and six months ended June 30, 2018 related to SG&A were $71 and $293, respectively. Severance costs for the three and six months ended June 30, 2018 related to COGS were $26. (D) Severance costs for the six months ended June 30, 2019 related to SG&A were $613 .
Schedule of Business Realignment Charges Classified by Statement of Operations	Business realignment charges classified by statement of operations line item were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ Six months ended ​ ​ June 30, ​ ​ June 30, ​ 2019 2018 ​ ​ 2019 ​ 2018 Cost of goods sold ​ $ 27 ​ $ 26 ​ $ 27 ​ $ 26 Selling, general and administrative ​ ​ - ​ ​ 366 ​ ​ 1,125 ​ ​ 588 Design and development ​ ​ - ​ ​ 128 ​ ​ 10 ​ ​ 128 Total business realignment charges ​ $ 27 ​ $ 520 ​ $ 1,162 ​ $ 742 ​
Electronics [Member]
Schedule of Restructuring and Related Costs	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accrual as of ​ 2019 Charge ​ ​ Utilization ​ Accrual as of ​ ​ January 1, 2019 ​ to Expense ​ Cash ​ Non-Cash ​ June 30, 2019 Employee termination benefits ​ $ 520 ​ $ (30) ​ $ (441) ​ $ 3 ​ $ 52 Accelerated depreciation ​ ​ - ​ ​ 195 ​ ​ - ​ ​ (195) ​ ​ - Contract termination costs ​ ​ 17 ​ ​ 27 ​ ​ (44) ​ ​ - ​ ​ - Other related costs ​ ​ 119 ​ ​ 120 ​ ​ (239) ​ ​ - ​ ​ - Total ​ $ 656 ​ $ 312 ​ $ (724) ​ $ (192) ​ $ 52 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Control Devices [Member] | Canton Facility Restructuring Plan [Member]
Schedule of Restructuring and Related Costs	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accrual as of ​ 2019 Charge ​ ​ Utilization ​ Accrual as of ​ ​ January 1, 2019 ​ to Expense ​ Cash ​ Non-Cash ​ June 30, 2019 Employee termination benefits ​ $ - ​ $ 4,603 ​ $ (459) ​ $ - ​ $ 4,144 Other related costs ​ ​ - ​ ​ 1,065 ​ ​ (1,065) ​ ​ - ​ ​ - Total ​ $ - ​ $ 5,668 ​ $ (1,524) ​ $ - ​ $ 4,144 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	A summary of financial information by reportable segment is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ Six months ended ​ ​ ​ June 30, ​ June 30, ​ ​ 2019 2018 2019 2018 ​ Net Sales: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ $ 114,067 ​ $ 109,956 ​ $ 224,186 ​ $ 225,313 ​ Inter-segment sales ​ ​ 2,078 ​ ​ 2,481 ​ ​ 3,939 ​ ​ 4,662 ​ Control Devices net sales ​ ​ 116,145 ​ ​ 112,437 ​ ​ 228,125 ​ ​ 229,975 ​ Electronics (D) ​ ​ 91,560 ​ ​ 90,313 ​ ​ 182,406 ​ ​ 180,341 ​ Inter-segment sales ​ ​ 10,325 ​ ​ 9,771 ​ ​ 19,047 ​ ​ 20,243 ​ Electronics net sales ​ ​ 101,885 ​ ​ 100,084 ​ ​ 201,453 ​ ​ 200,584 ​ PST ​ ​ 16,614 ​ ​ 20,333 ​ ​ 33,946 ​ ​ 40,878 ​ Inter-segment sales ​ ​ - ​ ​ - ​ ​ 6 ​ ​ 2 ​ PST net sales ​ ​ 16,614 ​ ​ 20,333 ​ ​ 33,952 ​ ​ 40,880 ​ Eliminations ​ ​ (12,403) ​ ​ (12,252) ​ ​ (22,992) ​ ​ (24,907) ​ Total net sales ​ $ 222,241 ​ $ 220,602 ​ $ 440,538 ​ $ 446,532 ​ Operating Income (Loss): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ $ 44,367 ​ $ 17,160 ​ $ 56,315 ​ $ 35,039 ​ Electronics ​ ​ 7,555 ​ ​ 8,276 ​ ​ 16,586 ​ ​ 16,156 ​ PST ​ ​ 6,414 ​ ​ 735 ​ ​ 7,084 ​ ​ 885 ​ Unallocated Corporate (A) ​ ​ (9,150) ​ ​ (6,990) ​ ​ (19,100) ​ ​ (16,052) ​ Total operating income ​ $ 49,186 ​ $ 19,181 ​ $ 60,885 ​ $ 36,028 ​ Depreciation and Amortization: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ $ 3,197 ​ $ 2,897 ​ $ 6,291 ​ $ 5,692 ​ Electronics ​ ​ 2,510 ​ ​ 2,252 ​ ​ 4,907 ​ ​ 4,543 ​ PST ​ ​ 1,695 ​ ​ 1,740 ​ ​ 3,220 ​ ​ 4,245 ​ Unallocated Corporate ​ ​ 216 ​ ​ 199 ​ ​ 429 ​ ​ 396 ​ Total depreciation and amortization (B) ​ $ 7,618 ​ $ 7,088 ​ $ 14,847 ​ $ 14,876 ​ Interest (Income) Expense, net: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ $ 195 ​ $ 18 ​ $ 377 ​ $ 37 ​ Electronics ​ ​ 63 ​ ​ 23 ​ ​ 119 ​ ​ 57 ​ PST ​ ​ (59) ​ ​ 194 ​ ​ 49 ​ ​ 532 ​ Unallocated Corporate ​ ​ 802 ​ ​ 935 ​ ​ 1,459 ​ ​ 1,898 ​ Total interest expense, net ​ $ 1,001 ​ $ 1,170 ​ $ 2,004 ​ $ 2,524 ​ Capital Expenditures: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ $ 4,042 ​ $ 3,312 ​ $ 7,534 ​ $ 9,058 ​ Electronics ​ ​ 3,356 ​ ​ 1,394 ​ ​ 7,094 ​ ​ 4,167 ​ PST ​ ​ 805 ​ ​ 696 ​ ​ 1,624 ​ ​ 1,955 ​ Unallocated Corporate (C) ​ ​ 592 ​ ​ 938 ​ ​ 1,227 ​ ​ 1,665 ​ Total capital expenditures ​ $ 8,795 ​ $ 6,340 ​ $ 17,479 ​ $ 16,845 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ ​ ​ ​ ​ ​ ​ 2019 2018 ​ Total Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Control Devices ​ ​ ​ ​ ​ ​ ​ $ 189,725 ​ $ 175,708 ​ Electronics ​ ​ ​ ​ ​ ​ ​ ​ 277,961 ​ ​ 265,838 ​ PST ​ ​ ​ ​ ​ ​ ​ ​ 90,707 ​ ​ 81,002 ​ Corporate (C) ​ ​ ​ ​ ​ ​ ​ ​ 360,870 ​ ​ 359,837 ​ Eliminations ​ ​ ​ ​ ​ ​ ​ ​ (323,216) ​ ​ (322,866) ​ Total assets ​ ​ ​ ​ ​ ​ ​ $ 596,047 ​ $ 559,519 ​
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas	The following tables present net sales and long-term assets for each of the geographic areas in which the Company operates: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ Six months ended ​ ​ ​ June 30, ​ June 30, ​ ​ 2019 2018 2019 2018 ​ Net Sales: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ North America ​ $ 123,293 ​ $ 120,885 ​ $ 242,660 ​ $ 245,314 ​ South America ​ ​ 16,614 ​ ​ 20,333 ​ ​ 33,946 ​ ​ 40,878 ​ Europe and Other ​ ​ 82,334 ​ ​ 79,384 ​ ​ 163,932 ​ ​ 160,340 ​ Total net sales ​ $ 222,241 ​ $ 220,602 ​ $ 440,538 ​ $ 446,532 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ ​ ​ ​ ​ ​ ​ 2019 2018 ​ Long-term Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ North America ​ ​ ​ ​ ​ ​ ​ $ 92,596 ​ $ 86,763 ​ South America ​ ​ ​ ​ ​ ​ ​ ​ 44,220 ​ ​ 45,408 ​ Europe and Other ​ ​ ​ ​ ​ ​ ​ ​ 123,142 ​ ​ 107,171 ​ Total long-term assets ​ ​ ​ ​ ​ ​ ​ $ 259,958 ​ $ 239,342 ​ (A) Unallocated Corporate expenses include, among other items, accounting/finance, human resources, information technology and legal costs as well as share-based compensation. (B) These amounts represent depreciation and amortization on property, plant and equipment and certain intangible assets. (C) Assets located at Corporate consist primarily of cash, intercompany loan receivables, fixed assets for the corporate headquarter building, information technology assets, equity investments and investments in subsidiaries. ​

Basis of Presentation (Narrativ

Basis of Presentation (Narrative) (Details)	64 Months Ended
	May 15, 2017	Jun. 30, 2019	Jun. 30, 2018	May 16, 2017
PST Eletronica Ltda [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership in consolidated subsidiary	74.00%
Percentage of additional noncontrolling interest acquired				26.00%
MSIL
Schedule of Equity Method Investments [Line Items]
Ownership percentage		49.00%	49.00%

Recently Issued Accounting St_2

Recently Issued Accounting Standards (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use assets	$ 18,970
Lease liabilities	$ 19,141
Adjustment | ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use assets		$ 20,618
Lease liabilities		$ 20,856

Revenue (Narrative) (Details)

Revenue (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Revenue [Abstract]
Contract assets	$ 0	$ 0
Contract liabilities	0	0
Capitalized contract acquisition costs	$ 0	$ 0

Revenue (Revenue by Segment and

Revenue (Revenue by Segment and Geographical Location) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Total net sales	$ 222,241	$ 220,602	$ 440,538	$ 446,532
North America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	123,293	120,885	242,660	245,314
South America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	16,614	20,333	33,946	40,878
Europe [Member]
Disaggregation of Revenue [Line Items]
Total net sales	70,254	71,080	141,608	142,515
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	12,080	8,304	22,324	17,825
Control Devices [Member]
Disaggregation of Revenue [Line Items]
Total net sales	114,067	109,956	224,186	225,313
Control Devices [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	98,066	98,564	194,786	203,007
Control Devices [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Total net sales	5,456	3,669	9,868	6,560
Control Devices [Member] | Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	10,545	7,723	19,532	15,746
Electronics [Member]
Disaggregation of Revenue [Line Items]
Total net sales	91,560	90,313	182,406	180,341
Electronics [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	25,227	22,321	47,874	42,307
Electronics [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Total net sales	64,798	67,411	131,740	135,955
Electronics [Member] | Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	1,535	581	2,792	2,079
PST [Member]
Disaggregation of Revenue [Line Items]
Total net sales	16,614	20,333	33,946	40,878
PST [Member] | South America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	$ 16,614	$ 20,333	$ 33,946	$ 40,878

Inventories (Narrative) (Detail

Inventories (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Inventories [Abstract]
Inventory amount, FIFO	$ 85,263	$ 64,745
Inventory amount, weighted average cost	$ 15,488	$ 14,533

Inventories (Schedule of Invent

Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Inventories [Abstract]
Raw materials	$ 60,951	$ 54,382
Work-in-progress	5,447	4,710
Finished goods	34,353	20,186
Total inventories, net	$ 100,751	$ 79,278

Financial Instruments and Fai_3

Financial Instruments and Fair Value Measurements (Narrative) (Details) € in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2018USD ($)	Mar. 31, 2018EUR (€)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Payment of earn-out consideration paid within operating activities			$ 921	$ 1,417
Earn-out consideration cash payment within financing activities			3,394
Earn-out consideration, operating and financing activities	$ 8,474
Transfers in or out of Level 3			0
Euro-Denominated Foreign Currency Forward Contracts [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Gain (loss) on derivative instruments held for trading purposes, net		$ 62		$ 42
Cash Flow Hedging [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
(Gain) loss from cash flow hedge derivatives to be reclassified			(281)
Cash Flow Hedging [Member] | U.S. Dollar Denominated Foreign Currency Forward Contracts Euro Functional Currency [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Notional amounts			0
Cash Flow Hedging [Member] | U.S. Dollar Denominated Foreign Currency Forward Contracts, Swedish Krona Functional Currency [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Notional amounts			0		$ 0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Forward Currency Contracts [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Notional amounts			2,953		9,017
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Mexican Peso-Denominated Foreign Currency Forward Contracts [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Notional amounts			2,953		$ 9,017
Fair Value, Inputs, Level 2 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Financial assets carried at fair value			281
Forward currency asset contracts			281
Orlaco [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Earn-out consideration | €						€ 7,500
Payment of earn-out consideration paid within operating activities			5,080
Earn-out consideration cash payment within financing activities			$ 3,394

Financial Instruments and Fai_4

Financial Instruments and Fair Value Measurements (Schedule of Derivative Instruments in Statement of Financial Position, Fair Value) (Details) - Forward Currency Contracts [Member] - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Notional amounts	$ 2,953	$ 9,017
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Cash flow hedges , other derivative assets	281	370
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Cash flow hedges, other derivative, liabilities

Financial Instruments and Fai_5

Financial Instruments and Fair Value Measurements (Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)) (Details) - Designated as Hedging Instrument [Member] - Forward Currency Contracts [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Derivatives designated as cash flow hedges:
Gain (loss) recorded in other comprehensive income	$ 157	$ 24	$ 426	$ 1,182
Gain (loss) reclassified from other comprehensive income into net income	$ 299	$ 224	$ 515	$ 375

Financial Instruments and Fai_6

Financial Instruments and Fair Value Measurements (Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Recurring [Member]
Financial assets carried at fair value:
Forward currency asset contracts	$ 281	$ 370
Total financial assets carried at fair value	281	370
Financial liabilities carried at fair value:
Earn-out consideration	11,057	18,672
Total financial liabilities carried at fair value	11,057	$ 18,672
Fair Value, Inputs, Level 2 [Member]
Financial assets carried at fair value:
Forward currency asset contracts	281
Total financial assets carried at fair value	281
Fair Value, Inputs, Level 3 [Member]
Financial liabilities carried at fair value:
Earn-out consideration	11,057
Total financial liabilities carried at fair value	$ 11,057

Financial Instruments and Fai_7

Financial Instruments and Fair Value Measurements (Summary of the change in fair value of the Level 3 financial liabilities related to earn-out consideration) (Details) - Earnout Consideration [Member] - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liability, Beginning balance	$ 18,672	$ 20,746
Change in fair value	921	1,417
Foreign currency adjustments	(62)	(2,117)
Earn-out consideration cash payment	(8,474)
Financial liability, Ending balance	11,057	20,046
Orlaco [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liability, Beginning balance	8,602	8,637
Change in fair value		369
Foreign currency adjustments	(128)	(244)
Earn-out consideration cash payment	(8,474)
Financial liability, Ending balance		8,762
PST Eletronica Ltda [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liability, Beginning balance	10,070	12,109
Change in fair value	921	1,048
Foreign currency adjustments	66	(1,873)
Financial liability, Ending balance	$ 11,057	$ 11,284

Share-Based Compensation (Narra

Share-Based Compensation (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, accelerated	$ 503		$ 503
Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 2,046	$ 1,434	$ 3,594	$ 2,838

Debt (Narrative) (Details)

Debt (Narrative) (Details) ¥ in Thousands, kr in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2019SEK (kr)	Jun. 30, 2019CNY (¥)	Jun. 30, 2019USD ($)	Jun. 05, 2019USD ($)	Dec. 31, 2018SEK (kr)	Dec. 31, 2018USD ($)	Sep. 12, 2014USD ($)	Nov. 02, 2007USD ($)
Debt Instrument [Line Items]
Borrowings outstanding					$ 103,500			$ 96,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Capitalized deferred financing costs					1,183
Line of credit facility, maximum borrowing capacity						$ 400,000			$ 300,000
Increase in maximum borrowing capacity of credit facility						$ 150
Borrowings outstanding					103,500			96,000
Write off of deferred debt issuance cost	$ 275
Debt instrument covenant default of other debt maximum amount					$ 30,000
Debt instrument covenant uninsured asset losses maximum amount		$ 30,000
Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Long-term debt, weighted average interest rate			3.45%	3.45%	3.45%
Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Long-term debt, weighted average interest rate			3.28%	3.28%	3.28%
Asset-Based Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity										$ 100,000
Line of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity				¥ 60,000	$ 8,740
Borrowings outstanding					0			0
Letter of Credit [Member]
Debt Instrument [Line Items]
Outstanding letters of credit					1,815			1,815
Credit Facility [Member]
Debt Instrument [Line Items]
Credit Facility covenant compliance		The Company was in compliance with all credit facility covenants at June 30, 2019 and December 31, 2018
PST Debt [Member]
Debt Instrument [Line Items]
Notes covenant compliance		The Company was in compliance with all debt covenants at June 30, 2019 and December 31, 2018
PST Eletronica Ltda [Member] | Term Loan [Member]
Debt Instrument [Line Items]
2019					869
2020					258
2021					$ 474
PST Eletronica Ltda [Member] | PST Long-Term Notes [Member]
Debt Instrument [Line Items]
Long-term debt, weighted average interest rate			7.00%	7.00%	7.00%
PST Eletronica Ltda [Member] | PST Short-Term Notes [Member]
Debt Instrument [Line Items]
Short-term debt, weighted average interest rate			6.00%	6.00%	6.00%
Electronics [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			kr 20,000		$ 2,155		kr 20,000	2,259
Borrowings outstanding					$ 0			$ 0

Debt (Schedule of Debt) (Detail

Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Revolving credit facility	$ 103,500	$ 96,000
Debt:
Total debt	1,601	2,516
Less: current portion	(869)	(1,533)
Total long-term debt, net	732	983
Line of Credit [Member]
Debt Instrument [Line Items]
Revolving credit facility	0	0
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility	$ 103,500	96,000
Debt:
Debt, maturity	June 2024
Maximum [Member] | Revolving Credit Facility [Member]
Debt:
Long-term debt, weighted average interest rate	3.45%
Minimum [Member] | Revolving Credit Facility [Member]
Debt:
Long-term debt, weighted average interest rate	3.28%
PST Short-Term Obligations [Member]
Debt Instrument [Line Items]
Short-term debt	$ 322	989
Debt:
Debt, maturity	December 2019
Interest rate	6.00%
PST Long-Term Notes [Member]
Debt:
Long-term debt	$ 1,279	$ 1,527
Debt, maturity	November 2021
Interest rate	7.00%

Leases - Narrative (Details)

Leases - Narrative (Details)	6 Months Ended
	Jun. 30, 2019segment
Leases [Abstract]
Number of operating segments	3
Option to extend	true
Option to terminate	true

Leases - Components of lease ex

Leases - Components of lease expense (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)
Lease Cost
Operating lease cost	$ 1,433
Short-term lease cost	142
Variable lease cost	84
Total lease cost	$ 1,659

Leases - Supplemental balance s

Leases - Supplemental balance sheet information (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Assets [Abstract]
Operating lease right of use asset	$ 18,970
Liabilities [Abstract]
Operating lease current liability, included in other current liabilities	4,576
Long-term lease liabilities	14,565
Total lease liabilities	$ 19,141

Leases - Maturities of lease li

Leases - Maturities of lease liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Maturities of lease liabilities:
2019	$ 2,662
2020	4,767
2021	4,133
2022	3,178
2023	3,148
Thereafter	4,422
Total undiscounted cash flows	22,310
Present values
Present values	(3,169)
Short-term lease liabilities	4,576
Long-term lease liabilities	14,565
Total lease liabilities	$ 19,141

Leases - Weighted-average remai

Leases - Weighted-average remaining lease term and discount rate (Details)	Jun. 30, 2019
Leases [Abstract]
Operating leases - Weighted-average remaining lease term (in years)	5 years 1 month 28 days
Operating leases - Weighted-average discount rate	5.78%

Leases - Other information (Det

Leases - Other information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)
Leases [Abstract]
Cash paid related to operating lease obligations	$ 2,212
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 243

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Details) - shares	Jun. 30, 2019	Jun. 30, 2018
Performance Based Right to Receive Common Shares [Member]
Common shares, non-vested	662,509	614,670

Earnings Per Share (Weighted Av

Earnings Per Share (Weighted Average Shares Outstanding Used in Calculating Basic and Diluted Net Income Per Share) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Basic weighted-average Common Shares outstanding	27,887,157	28,449,303	28,208,229	28,349,362
Effect of dilutive shares	406,390	528,444	507,496	557,995
Diluted weighted-average Common Shares outstanding	28,293,547	28,977,747	28,715,725	28,907,357

Changes in Accumulated Other _3

Changes in Accumulated Other Comprehensive Loss by Component (Narrative) (Details) $ in Thousands	May 07, 2019USD ($)shares	Jun. 30, 2019USD ($)	Oct. 28, 2018USD ($)
Stock Repurchase Program, Authorized Amount			$ 50,000
Payments for repurchase of common stock		$ 50,000
Accelerated Share Repurchase Agreement [Member]
Payments for repurchase of common stock	$ 50,000
Stock repurchased and retired during period, shares | shares	1,349,528
Percentage of expected shares repurchased	80
Treasury stock, retired, cost method, amount	$ 40,000
Equity increase (decrease) related to shares repurchase program.	$ 10,000

Changes in Accumulated Other _4

Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended
	Jun. 30, 2019		Mar. 31, 2019	Jun. 30, 2018		Mar. 31, 2018	Jun. 30, 2019		Jun. 30, 2018		Dec. 31, 2018	Dec. 31, 2017
Changes in Accumulated Other Comprehensive Loss by Component [Abstract]
Foreign currency translation, Beginning balance	$ (89,848)		$ (86,044)	$ (65,523)		$ (69,417)	$ (86,044)		$ (69,417)
Foreign currency translation, Other comprehensive income (loss) before reclassifications	2,311			(17,421)			(1,493)		(13,527)
Foreign currency translation, Net other comprehensive income (loss), net of tax	2,311			(17,421)			(1,493)		(13,527)
Foreign currency translation, Ending balance	(87,537)		(89,848)	(82,944)		(65,523)	(87,537)		(82,944)
Unrealized gain (loss) on on derivatives, Beginning balance	334		292	652		(143)	292		(143)
Unrealized gain (loss) on on derivatives, Other comprehensive income (loss) before reclassifications	123			19			336		933
Unrealized gain (loss) on on derivatives, Amounts reclassified from accumulated other comprehensive loss	(235)			(178)			(406)		(297)
Unrealized gain (loss) on on derivatives, Net other comprehensive income (loss), net of tax	(112)	[1]	42	(159)	[1]	795	(70)	[1]	636	[1]
Unrealized gain (loss) on on derivatives, Ending balance	222		334	493		652	222		493
Total, Other comprehensive income (loss) before reclassifications	2,434			(17,402)			(1,157)		(12,594)
Total, Amounts reclassified from accumulated other comprehensive loss	(235)			(178)			(406)		(297)
Total, Net other comprehensive income (loss), net of tax	2,199			(17,580)			(1,563)		(12,891)
Accumulated other comprehensive income (loss), net of tax, total	$ (87,315)		$ (89,514)	$ (82,451)		$ (64,871)	$ (87,315)		$ (82,451)		$ (85,752)	$ (69,560)
[1]	Net of tax benefit of $(30 ) and $(41) for the three months ended June 30, 2019 and 2018, respectively. Net of tax expense (benefit) of $(19) and $171 for the six months ended June 30, 2019 and 2018, respectively.

Commitments and Contingencies_2

Commitments and Contingencies (Narrative) (Details) R$ in Thousands	3 Months Ended		6 Months Ended		64 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	May 15, 2017	Jun. 30, 2019BRL (R$)	Dec. 31, 2018USD ($)	Dec. 31, 2018BRL (R$)	Dec. 31, 2017USD ($)
Short-term Debt [Line Items]
Environmental remediation accrued undiscounted liability	$ 85,000		$ 85,000				$ 111,000
Loss recoveries and insurance gain contingencies									$ 1,644,000
Product warranty and recall accrual	3,132,000		3,132,000				3,283,000
Gain on Business Interruption Insurance Recovery	0	$ 0	0	$ 0
Cash proceeds related to damaged inventory and incremental costs			0	241,000
Cash proceeds within cash flows from investing activities			0	1,403,000
Insurance recoveries	0	$ 0	0	$ 0
Selling, General and Administrative Expenses [Member]
Short-term Debt [Line Items]
Gain on litigation	6,473,000
Interest Income [Member]
Short-term Debt [Line Items]
Gain on litigation	2,392,000
Professional Fees [Member]
Short-term Debt [Line Items]
Gain on litigation	990,000
Letter of Credit [Member]
Short-term Debt [Line Items]
Line of credit	1,489,000		1,489,000
PST Eletronica Ltda [Member]
Short-term Debt [Line Items]
Percentage ownership in consolidated subsidiary					74.00%
PST Eletronica Ltda [Member] | Civil, labor and other tax contingencies [Member]
Short-term Debt [Line Items]
Loss contingency, estimate of possible loss	$ 5,000,000		$ 5,000,000			R$ 19100	$ 7,600,000	R$ 29700

Commitments and Contingencies_3

Commitments and Contingencies (Reconciliation of Changes in Product Warranty and Recall Liability) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Commitments and Contingencies [Abstract]
Product warranty and recall at beginning of period	$ 10,494	$ 9,979
Accruals for warranties established during period	3,506	2,791
Aggregate changes in pre-existing liabilities due to claim developments	1,687	1,569
Settlements made during the period	(4,442)	(2,876)
Foreign currency translation	(189)	(525)
Product warranty and recall at end of period	$ 11,056	$ 10,938

Business Realignment and Rest_3

Business Realignment and Restructuring (Narrative) (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2019USD ($)
Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 96	$ 312
Additional restructuring costs	760	760
Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	3,443	5,668
Canton Facility Restructuring Plan [Member] | Control Devices [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Estimated total cost	2,700	2,700
Canton Facility Restructuring Plan [Member] | Control Devices [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Estimated total cost	3,900	3,900
Canton Facility Restructuring [Member] | Canton Facility Restructuring Plan [Member] | Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		5,668
Selling, General and Administrative Expenses [Member] | Canton Facility Restructuring Plan [Member] | Canton Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	280	475
Cost of Goods Sold [Member] | Canton Facility Restructuring Plan [Member] | Canton Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	2,354	3,606
Design and Development Expense [Member] | Canton Facility Restructuring Plan [Member] | Canton Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 809	$ 1,587

Business Realignment and Rest_4

Business Realignment and Restructuring (Schedule of Restructuring and Related Costs) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance		$ 656
Charge to expense	$ 96	312
Cash payments		(724)
Utilization, Non-Cash		(192)
Restructuring Reserve, Ending Balance	52	52
Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Charge to expense	3,443	5,668
Employee Termination [Member] | Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance		520
Charge to expense		(30)
Cash payments		(441)
Utilization, Non-Cash		3
Restructuring Reserve, Ending Balance	52	52
Employee Termination [Member] | Control Devices [Member] | Canton Facility Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Charge to expense		4,603
Cash payments		(459)
Utilization, Non-Cash
Restructuring Reserve, Ending Balance	4,144	4,144
Canton Facility Restructuring [Member] | Control Devices [Member] | Canton Facility Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Charge to expense		5,668
Cash payments		(1,524)
Utilization, Non-Cash
Restructuring Reserve, Ending Balance	$ 4,144	4,144
Accelerated Depreciation [Member] | Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Charge to expense		195
Utilization, Non-Cash		(195)
Contract Termination [Member] | Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance		17
Charge to expense		27
Cash payments		(44)
Other Restructuring [Member] | Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance		119
Charge to expense		120
Cash payments		(239)
Other Restructuring [Member] | Control Devices [Member] | Canton Facility Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Charge to expense		1,065
Cash payments		(1,065)
Utilization, Non-Cash

Business Realignment and Rest_5

Business Realignment and Restructuring (Schedule of Business Realignment Charges Classified by Statement of Operations) (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]
Total business realignment charges	$ 27	$ 520	$ 1,162	$ 742
Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	27	26	27	26
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges		366	1,125	588
Design and Development Expense [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges		128	10	128
Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	27	128	549	128
Control Devices [Member] | Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs			27
Control Devices [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs			512
Control Devices [Member] | Design and Development [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs		128	10	128
Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges		295		295
Severance costs			512
Electronics [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 27			295
PST Segment [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges		97		319
PST Segment [Member] | Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs		26		26
PST Segment [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs		$ 71		$ 293
Unallocated Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges			613
Unallocated Corporate [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs			$ 613

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Taxes [Abstract]
Income tax expense (benefit) on operations	$ 9,066	$ 3,820	$ 10,901	$ 7,053
Effective income tax rate	18.60%	20.20%	18.10%	19.80%

Segment Reporting (Narrative) (

Segment Reporting (Narrative) (Details)	6 Months Ended
	Jun. 30, 2019segment
Segment Reporting [Abstract]
Number of reportable segments	3

Segment Reporting (Schedule of

Segment Reporting (Schedule of Segment Reporting Information, by Segment) (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
Net Sales:
Net sales	$ 222,241	$ 220,602	$ 440,538	$ 446,532
Operating Income (Loss)
Total operating income (loss)	49,186	19,181	60,885	36,028
Total income before income taxes	48,830	18,940	60,322	35,553
Depreciation and Amortization:
Total depreciation and amortization	7,618	7,088	14,847	14,876
Interest Expense, net:
Total interest expense, net	1,001	1,170	2,004	2,524
Interest Expense, net:
Total interest expense, net	1,001	1,170	2,004	2,524
Capital Expenditures:
Capital expenditures	8,795	6,340	17,479	16,845
Long-Lived Assets	259,958		259,958		$ 239,342
Total Assets:
Total assets	596,047		596,047		559,519
Intersegment Eliminations [Member]
Net Sales:
Net sales	(12,403)	(12,252)	(22,992)	(24,907)
Total Assets:
Total assets	(323,216)		(323,216)		(322,866)
Control Devices [Member]
Net Sales:
Net sales	114,067	109,956	224,186	225,313
Operating Income (Loss)
Total operating income (loss)	44,367	17,160	56,315	35,039
Depreciation and Amortization:
Total depreciation and amortization	3,197	2,897	6,291	5,692
Interest Expense, net:
Total interest expense, net	195	18	377	37
Capital Expenditures:
Capital expenditures	4,042	3,312	7,534	9,058
Total Assets:
Total assets	189,725		189,725		175,708
Control Devices [Member] | Operating Segments [Member]
Net Sales:
Net sales	116,145	112,437	228,125	229,975
Control Devices [Member] | Inter-Segment Sales [Member]
Net Sales:
Net sales	2,078	2,481	3,939	4,662
Electronics [Member]
Net Sales:
Net sales	91,560	90,313	182,406	180,341
Operating Income (Loss)
Total operating income (loss)	7,555	8,276	16,586	16,156
Depreciation and Amortization:
Total depreciation and amortization	2,510	2,252	4,907	4,543
Interest Expense, net:
Total interest expense, net	63	23	119	57
Capital Expenditures:
Capital expenditures	3,356	1,394	7,094	4,167
Total Assets:
Total assets	277,961		277,961		265,838
Electronics [Member] | Operating Segments [Member]
Net Sales:
Net sales	101,885	100,084	201,453	200,584
Electronics [Member] | Inter-Segment Sales [Member]
Net Sales:
Net sales	10,325	9,771	19,047	20,243
PST [Member]
Net Sales:
Net sales	16,614	20,333	33,946	40,878
Operating Income (Loss)
Total operating income (loss)	6,414	735	7,084	885
Depreciation and Amortization:
Total depreciation and amortization	1,695	1,740	3,220	4,245
Interest Expense, net:
Total interest expense, net	(59)	194	49	532
Capital Expenditures:
Capital expenditures	805	696	1,624	1,955
Total Assets:
Total assets	90,707		90,707		81,002
PST [Member] | Operating Segments [Member]
Net Sales:
Net sales	16,614	20,333	33,952	40,880
PST [Member] | Inter-Segment Sales [Member]
Net Sales:
Net sales			6	2
Unallocated Corporate [Member]
Operating Income (Loss)
Total operating income (loss)	(9,150)	(6,990)	(19,100)	(16,052)
Depreciation and Amortization:
Total depreciation and amortization	216	199	429	396
Interest Expense, net:
Total interest expense, net	802	935	1,459	1,898
Capital Expenditures:
Capital expenditures	592	$ 938	1,227	$ 1,665
Total Assets:
Total assets	$ 360,870		$ 360,870		$ 359,837

Segment Reporting (Schedule o_2

Segment Reporting (Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas) (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
Segment Reporting Information [Line Items]
Net sales	$ 222,241	$ 220,602	$ 440,538	$ 446,532
Long-term Assets:
Total long-term assets	259,958		259,958		$ 239,342
North America [Member]
Segment Reporting Information [Line Items]
Net sales	123,293	120,885	242,660	245,314
Long-term Assets:
Total long-term assets	92,596		92,596		86,763
South America [Member]
Segment Reporting Information [Line Items]
Net sales	16,614	20,333	33,946	40,878
Long-term Assets:
Total long-term assets	44,220		44,220		45,408
Europe and Other [Member]
Segment Reporting Information [Line Items]
Net sales	82,334	$ 79,384	163,932	$ 160,340
Long-term Assets:
Total long-term assets	$ 123,142		$ 123,142		$ 107,171

Investments (Narrative) (Detail

Investments (Narrative) (Details) R$ in Thousands, $ in Thousands	3 Months Ended		6 Months Ended		64 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	May 15, 2017	Jun. 30, 2019BRL (R$)	Dec. 31, 2018USD ($)	Dec. 31, 2018BRL (R$)	Jun. 30, 2018BRL (R$)	May 16, 2017
Schedule of Equity Method Investments [Line Items]
Income (loss) from equity method investments	$ 548	$ 665	$ 912	$ 1,186
MSIL
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	49.00%	49.00%	49.00%	49.00%		49.00%			49.00%
Equity method investments	$ 12,396		$ 12,396				$ 11,288
Income (loss) from equity method investments	548	$ 665	912	$ 1,186
PST Eletronica Ltda [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership in consolidated subsidiary					74.00%
Percentage of additional noncontrolling interest acquired										26.00%
Dividends Payable, Price Index Adjustment	150	$ 108	150	$ 108		R$ 580			R$ 419
PST Eletronica Ltda [Member] | Noncontrolling interest
Schedule of Equity Method Investments [Line Items]
Dividends payable	6,175		6,175			R$ 23783	5,980	R$ 23204
Autotech Ventures [Member] | Venture Capital Funds [Member]
Schedule of Equity Method Investments [Line Items]
Investment commitment							10,000
Investment	1,653		$ 1,653				$ 437
Contribution expected period (in years)			10 years
Contribution by company	$ 1,200		$ 1,200

Disposal of Non-Core Products (

Disposal of Non-Core Products (Narrative) (Details) - USD ($) $ in Thousands	Apr. 01, 2019	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Asset Purchase Agreement date					Apr. 1, 2019
Proceeds from sale of productive assets	$ 40,000
Gain on disposal		$ 33,921			$ 33,599
Selling, general and administrative		27,522		$ 35,256	63,110	$ 72,517
Non-core Switches and Connector Product [Member]
Disposal group, net sales					24,310
Non-core Switches and Connector Product [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Disposal group, net sales		13,214		11,249		23,129
Disposal group, operating income		3,373		$ 2,317	$ 3,373	$ 4,725
Control Devices [Member] | Non-core Switches and Connector Product [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Proceeds from sale of productive assets		9,054
Disposal group, net sales		4,160
Disposal group, cost of goods sold		2,775
Gain on disposal		33,921
Selling, general and administrative			$ 322
Services provided income per agreement recognized as reduction to selling general and administrative expenses		$ 675