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Concentration (Details 1) - Purchase [Member]
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 10.00% 10.00%
Supplier A [Member]    
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 24.00% 22.00%
Supplier B [Member]    
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage [1] 21.00%
Supplier C [Member]    
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 16.00% [1]
[1] Less than 10%.