Restructuring and Business Realignment (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 603	$ 3,539
Additional restructuring costs	400
Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	12,530
Canton Facility Restructuring Plan [Member] | Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	12,530
Canton Facility Restructuring Plan [Member] | Control Devices [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Estimated total cost	1,500
Canton Facility Restructuring Plan [Member] | Control Devices [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Estimated total cost	1,900
Employee Termination [Member] | Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	(18)	1,939
Employee Termination [Member] | Canton Facility Restructuring Plan [Member] | Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	8,088
Excess and Obsolete Inventory [Member] | Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		823
Intangible Impairment [Member] | Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		200
Fixed Asset Impairment [Member] | Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		157
Other Restructuring [Member] | Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	323	264
Other Restructuring [Member] | Canton Facility Restructuring Plan [Member] | Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	4,442
Contract Termination [Member] | Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	9	156
Selling, General and Administrative Expenses [Member] | Canton Facility Restructuring Plan [Member] | Canton Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,526
Cost of Goods Sold [Member] | Canton Facility Restructuring Plan [Member] | Canton Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	7,625
Cost of Goods Sold [Member] | Excess and Obsolete Inventory [Member] | Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		$ 823
Design and Development Expense [Member] | Canton Facility Restructuring Plan [Member] | Canton Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 3,379