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STOCKHOLDERS' EQUITY (Details 2) (USD $)
 6 Months Ended
Jun. 30, 2014
Equity Incentive Plans Warrant Activity [Line Items]  
Warrants, Outstanding at December 31, 2013 5,718,947
Warrants, Issued 0
Warrants, Exercised (700,230)
Warrants, Expired (9,795)
Warrants, Outstanding at June 30, 2014 5,008,922
Weighted - average exercise price of Warrants, Outstanding at December 31, 2013 $ 1.34
Weighted - average exercise price of Warrants, Issued $ 0
Weighted - average exercise price of Warrants, Exercised $ 2.29
Weighted - average exercise price of Warrants, Expired $ 20.92
Weighted - average exercise price of Warrants, Outstanding at June 30, 2014 $ 1.17
Aggregate Intrinsic Value of Warrants, Outstanding at December 31, 2013 $ 14,809,030
Aggregate Intrinsic Value of Warrants, Outstanding at June 30, 2014 $ 41,163,640