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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

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585

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- Definition

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.

+ References

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

No definition available.

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 420
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