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Restructuring and Business Realignment (Schedule of Business Realignment Charges Classified by Statement of Operations) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]      
Charge to expense $ 2,617 $ 1,029 $ 1,578
Cost of Sales [Member]      
Restructuring Cost and Reserve [Line Items]      
Charge to expense 437 172 847
Selling, General and Administrative Expenses [Member]      
Restructuring Cost and Reserve [Line Items]      
Charge to expense 1,080 528 559
Design and Development [Member]      
Restructuring Cost and Reserve [Line Items]      
Charge to expense 1,100 329 172
Electronics [Member]      
Restructuring Cost and Reserve [Line Items]      
Charge to expense 59 183 494
Electronics [Member] | Selling, General and Administrative Expenses [Member]      
Restructuring Cost and Reserve [Line Items]      
Charge to expense $ 59 183 $ 494
Corporate [Member] | Selling, General and Administrative Expenses [Member]      
Restructuring Cost and Reserve [Line Items]      
Charge to expense   $ 309