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NET LOSS PER SHARE (Details) - shares
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive shares excluded from earnings per share calculation 28,487,589 33,661,004
Warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive shares excluded from earnings per share calculation 3,290,905 10,374,071
Stock Options [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive shares excluded from earnings per share calculation 25,196,684 23,286,933