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FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair value measurements within fair value hierarchy of derivative liabilities using Level 3 inputs (Details 1) (USD $)
3 Months Ended
Mar. 31, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance at January 1, 2014 $ 6,000,000
Additional Warrants issued January 2014 444,000
Change in fair value of derivative liabilities 890,000
Balance at March 31, 2014 $ 7,334,000