Restructuring and Business Realignment (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 290	$ 2,400	$ 603
Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense		2,978	12,530
Particulate Matter Product Line Strategic Exit [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	2,360	3,428
Particulate Matter Product Line Strategic Exit [Member] \| Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	2,360	3,428
Particulate Matter Product Line Strategic Exit [Member] \| Control Devices [Member] \| Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Estimated total cost	4,200
Canton Facility Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	13
Canton Facility Restructuring Plan [Member] \| Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	13	2,978	12,530
Employee Severance [Member] \| Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	50	1,034	(18)
Employee Severance [Member] \| Particulate Matter Product Line Strategic Exit [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	139
Employee Severance [Member] \| Canton Facility Restructuring Plan [Member] \| Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense		1,119	8,088
Fixed Asset Impairment [Member] \| Particulate Matter Product Line Strategic Exit [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	188	3,326
Other Restructuring [Member] \| Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	240	914	323
Other Restructuring [Member] \| Particulate Matter Product Line Strategic Exit [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	2,033	102
Other Restructuring [Member] \| Canton Facility Restructuring Plan [Member] \| Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	13	1,859	4,442
Contract Termination [Member] \| Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense		452	9
Selling, General and Administrative Expenses [Member] \| Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	210	1,774
Selling, General and Administrative Expenses [Member] \| Particulate Matter Product Line Strategic Exit [Member] \| Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	642	2,611
Selling, General and Administrative Expenses [Member] \| Canton Facility Restructuring Plan [Member] \| Canton Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense			1,526
Selling, General and Administrative Expenses [Member] \| Canton Facility Restructuring Plan [Member] \| Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense		551
Cost of Goods Sold [Member] \| Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	37	147
Cost of Goods Sold [Member] \| Particulate Matter Product Line Strategic Exit [Member] \| Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	1,510	817
Cost of Goods Sold [Member] \| Canton Facility Restructuring Plan [Member] \| Canton Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense			7,625
Cost of Goods Sold [Member] \| Canton Facility Restructuring Plan [Member] \| Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense		1,659
Design and Development Expense [Member] \| Electronics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	43	479
Design and Development Expense [Member] \| Particulate Matter Product Line Strategic Exit [Member] \| Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	208
Design and Development Expense [Member] \| Canton Facility Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 13
Design and Development Expense [Member] \| Canton Facility Restructuring Plan [Member] \| Canton Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense			$ 3,379
Design and Development Expense [Member] \| Canton Facility Restructuring Plan [Member] \| Control Devices [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense		$ 768