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Concentrations (Details) (Purchase [Member])
9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Customer A [Member]
   
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 19.00% 17.00%
Customer B [Member]
   
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage    14.00%
Customer C [Member]
   
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 15.00% 11.00%