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Concentrations (Details)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Supplier A [Member]    
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 17.00% 29.00%
Supplier B [Member]    
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 14.00% 15.00%
Supplier C [Member]    
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 10.00% [1]
[1] * Less than 10%.