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Restructuring and Business Realignment (Realignment Charges Classified by Statement of Operations) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]      
Total business realignment charges $ 1,392 $ 4,037 $ 1,829
Cost of Goods Sold [Member]      
Restructuring Cost and Reserve [Line Items]      
Total business realignment charges 8 1,231  
Selling, General and Administrative Expenses [Member]      
Restructuring Cost and Reserve [Line Items]      
Total business realignment charges 1,375 2,121 1,829
Design and Development Expense [Member]      
Restructuring Cost and Reserve [Line Items]      
Total business realignment charges 9 685  
Control Devices [Member]      
Restructuring Cost and Reserve [Line Items]      
Total business realignment charges 192 1,752 682
Control Devices [Member] | Cost of Goods Sold [Member]      
Restructuring Cost and Reserve [Line Items]      
Severance costs   724  
Control Devices [Member] | Selling, General and Administrative Expenses [Member]      
Restructuring Cost and Reserve [Line Items]      
Severance costs 192 745 682
Control Devices [Member] | Design and Development Expense [Member]      
Restructuring Cost and Reserve [Line Items]      
Severance costs   283  
Electronics [Member]      
Restructuring Cost and Reserve [Line Items]      
Total business realignment charges 3 1,690 99
Electronics [Member] | Cost of Goods Sold [Member]      
Restructuring Cost and Reserve [Line Items]      
Severance costs 1 383  
Electronics [Member] | Selling, General and Administrative Expenses [Member]      
Restructuring Cost and Reserve [Line Items]      
Severance costs   905 99
Severance benefit (7)    
Electronics [Member] | Design and Development Expense [Member]      
Restructuring Cost and Reserve [Line Items]      
Severance costs 9 402  
PST Segment [Member]      
Restructuring Cost and Reserve [Line Items]      
Total business realignment charges 59 234  
PST Segment [Member] | Cost of Goods Sold [Member]      
Restructuring Cost and Reserve [Line Items]      
Severance costs 7 124  
PST Segment [Member] | Selling, General and Administrative Expenses [Member]      
Restructuring Cost and Reserve [Line Items]      
Severance costs 52 110  
Corporate [Member]      
Restructuring Cost and Reserve [Line Items]      
Total business realignment charges 1,138 361 1,048
Corporate [Member] | Selling, General and Administrative Expenses [Member]      
Restructuring Cost and Reserve [Line Items]      
Severance costs $ 1,138 $ 361 $ 1,048