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Segment Information (Major Customers) (Narrative) (Details) - 6 months ended Jun. 30, 2015
Total
Segment Reporting Information  
Number of customers included in five largest customer concentration disclosure 5
Revenue, net | Minimum  
Segment Reporting Information  
Concentration risk benchmark percentage 10.00%
Accounts Receivable | Minimum  
Segment Reporting Information  
Concentration risk benchmark percentage 10.00%