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Warrants (Details) (Warrant [Member], USD $)
6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Significant assumptions used to measure the fair value of warrants    
Stock price $ 0.23 $ 0.35
Volatility 50.00% 50.00%
Expected dividend yield 0.00% 0.00%
Delta   $ 0.08
Up Ratio   $ 1.144
Down Ratio   $ 0.857
Up transition probability $ 0.500 $ 0.500
Minimum [Member]
   
Significant assumptions used to measure the fair value of warrants    
Term 2 years 3 months 28 days 2 years 10 months 24 days
Risk-free interest rate 0.36% 0.36%
Exercises prices $ 0.25 $ 0.25
Delta $ 0.04  
Up Ratio $ 1.098  
Down Ratio $ 0.858  
Maximum [Member]
   
Significant assumptions used to measure the fair value of warrants    
Term 5 years 5 years
Risk-free interest rate 1.41% 0.72%
Exercises prices $ 0.4488 $ 0.4488
Delta $ 0.08  
Up Ratio $ 1.145  
Down Ratio $ 0.902