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Fair Value Measurements (Details 2) (Derivative liability, Warrants, USD $)
3 Months Ended
Mar. 31, 2013
Level 3 Liabilities  
Issuance of warrants $ 4,394,500
Balance at the end of the period $ 4,394,500
Level 3
 
Significant assumptions for fair value of the warrant liability  
Volatility (as a percent) 80.00%
Risk free interest rate (as a percent) 0.05%
Strike price (in dollar per share) $ 0.01
Expected life 2 months 1 day