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Fair Value Measurements (Details 2) (Warrants, USD $)
9 Months Ended
Sep. 30, 2013
Warrants
 
Reconciliation of the beginning and ending balances  
Balance at the beginning of the period $ 8,765,628
Fair Value of Warrants Reclassified to Additional Paid in Capital (5,417,871)
Fair value of New Warrants Issued During the Period 0
Unrealized (gains) or losses 2,933,527
Balance at the end of the period $ 6,281,284