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FAIR VALUE MEASUREMENTS (Details 2) - USD ($)
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at January 1, $ 41,089,580  
Private placement warrants   $ 2,544,277
Exercise of Series A warrant liabilities (2,254,636)  
Change in fair value of derivative liabilities 14,782,039 (250,826)
Ending balance $ 53,616,983 $ 2,293,451