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Concentration of Credit (Details) - Customer concentration - customer
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Revenue | One distributor in the U.S    
CONCENTRATION    
Concentration risk, Number of customers 1  
Concentration risk 66.00% 76.00%
Revenue | One customer    
CONCENTRATION    
Concentration risk 12.00% 10.00%
Accounts receivable | One distributor in the U.S    
CONCENTRATION    
Concentration risk 76.00% 71.00%
Accounts receivable | One customer    
CONCENTRATION    
Concentration risk 8.00% 14.00%