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STOCKHOLDERS' EQUITY (Details) - $ / shares
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Equity [Abstract]    
Volatility 151.70% 94.10%
Expected term (in years) 6 years 6 years
Risk-free rate 1.22% 1.64%
Expected dividend yield 0.00% 0.00%
Weighted-average grant date fair value (in dollars per share) $ 0.96 $ 2.42