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Concentrations (Detail Textuals) (Concentrations of credit risk)
12 Months Ended
Dec. 31, 2013
Customer
Dec. 31, 2012
Customer
Accounts receivable
   
Concentration Risk [Line Items]    
Number of customers 1 3
Percentage of concentrations of credit risk 50.00% 74.00%
Revenue
   
Concentration Risk [Line Items]    
Number of customers 26 28
Percentage of concentrations of credit risk 97.00% 77.00%