Business Realignment and Restructuring (Schedule of Restructuring and Related Costs) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2019
Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance		$ 656
Charge to expense	$ 157	469
Cash payments		(788)
Utilization, Non-Cash		(286)
Restructuring Reserve, Ending Balance	51	51
Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Charge to expense	3,607	9,275
Employee Termination [Member] \| Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance		520
Charge to expense		(30)
Cash payments		(442)
Utilization, Non-Cash		3
Restructuring Reserve, Ending Balance	51	51
Employee Termination [Member] \| Control Devices [Member] \| Canton Facility Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Charge to expense		6,967
Cash payments		(1,371)
Utilization, Non-Cash
Restructuring Reserve, Ending Balance	5,596	5,596
Canton Facility Restructuring [Member] \| Control Devices [Member] \| Canton Facility Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Charge to expense		9,275
Cash payments		(3,597)
Utilization, Non-Cash
Restructuring Reserve, Ending Balance	$ 5,596	5,596
Accelerated Depreciation [Member] \| Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Charge to expense		289
Utilization, Non-Cash		(289)
Contract Termination [Member] \| Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance		17
Charge to expense		24
Cash payments		(41)
Other Restructuring [Member] \| Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance		119
Charge to expense		186
Cash payments		(305)
Other Restructuring [Member] \| Control Devices [Member] \| Canton Facility Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Charge to expense		2,308
Cash payments		(2,226)
Utilization, Non-Cash

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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