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Segment Information (Details 2)
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Net revenues | Customer concentration | US Based Distributors        
Segment Information        
Concentration risk, percentage 69.00% 73.00% 71.00% 75.00%