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Business Segment, Geographic and Customer Information (Narrative) (Details) - Segment
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Segment Reporting Information [Line Items]    
Number of reportable segments 2  
Major Customer One [Member] | Sales [Member]    
Segment Reporting Information [Line Items]    
Concentration Risk, Percentage 10.00% 13.00%
Major Customer Two [Member] | Sales [Member]    
Segment Reporting Information [Line Items]    
Concentration Risk, Percentage   10.00%