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STOCKHOLDERS' EQUITY (Details 1) - Stock Options [Member] - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Options, Outstanding    
Options outstanding beginning 23,365,225  
Options Granted 2,025,500  
Options Exercised (154,791)  
Expired/Forfeited (39,250)  
Options outstanding ending 25,196,684 23,365,225
Vested and Exercisable ending 20,244,060  
Unvested ending 4,952,624  
Options, Weighted Average Exercise Price    
Options outstanding beginning $ 3.78  
Granted 5.19  
Exercised 0.29  
Expired/Forfeited 7.70  
Options outstanding ending 3.91 $ 3.78
Vested and Exercisable ending 3.40  
Unvested ending $ 5.99  
Options, Weighted Average Remaining Contractual Life    
Options outstanding 5 years 3 months 19 days 5 years 1 month 16 days
Vested and Exercisable ending 4 years 4 months 24 days  
Unvested ending 9 years 1 month 6 days  
Options outstanding, Aggregate Intrinsic Value    
Options outstanding beginning $ 64,664,821  
Options exercised 795,224  
Options outstanding ending 45,463,554 $ 64,664,821
Vested and Exercisable ending 45,405,774  
Unvested ending $ 57,780