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Derivative Financial Instruments (Details 4) (Derivative instrument liability, Warrants, USD $)
9 Months Ended
Sep. 30, 2012
Derivative instrument liability | Warrants
 
Changes in the fair value of Level 3 liabilities  
Balance at the beginning of the period $ 3,325,114
Fair Value of Warrants classified to derivative liability 169,203
Unrealized (gains) or losses 1,169,078
Balance at the end of the period $ 4,663,395