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Business Realignment (Schedule of Business Realignment Charges Classified by Statement of Operations) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]        
Total business realignment charges $ 211 $ 1,029 $ 2,422 $ 1,029
Cost of Goods Sold [Member]        
Restructuring Cost and Reserve [Line Items]        
Total business realignment charges 20 171 307 171
Selling, General and Administrative [Member]        
Restructuring Cost and Reserve [Line Items]        
Total business realignment charges $ 191 529 1,015 529
Design and Development Expense [Member]        
Restructuring Cost and Reserve [Line Items]        
Total business realignment charges   $ 329 $ 1,100 $ 329