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Concentrations (Details) - Revenue [Member]
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Concentration of revenue from customers    
Concentration risk percentage 10.00% 10.00%
Supplier A [Member]    
Concentration of revenue from customers    
Concentration risk percentage 18.00% [1]
Supplier B [Member]    
Concentration of revenue from customers    
Concentration risk percentage 11.00% [1]
Supplier C [Member]    
Concentration of revenue from customers    
Concentration risk percentage [1] 19.00%
Supplier D [Member]    
Concentration of revenue from customers    
Concentration risk percentage [1] 17.00%
Supplier E [Member]    
Concentration of revenue from customers    
Concentration risk percentage [1] 13.00%
Supplier F [Member]    
Concentration of revenue from customers    
Concentration risk percentage [1] 12.00%
Supplier G [Member]    
Concentration of revenue from customers    
Concentration risk percentage [1] 10.00%
[1] Less than 10%