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STOCKHOLDERS' EQUITY (Details 3) - Stock Options [Member] - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Options, Outstanding    
Options Outstanding beginning 23,365,225  
Options Granted 3,264,500  
Options Exercised (5,454,526)  
Options Expired (25,000)  
Options Cancelled/Forfeited (277,375)  
Options Outstanding ending 20,872,824 23,365,225
Vested and Exercisable ending 16,068,991  
Unvested ending 4,803,833  
Options, Weighted Average Exercise Price    
Options Outstanding beginning $ 3.78  
Granted 5.45  
Exercised 0.31  
Expired 7.76  
Cancelled/Forfeited 5.47  
Options Outstanding ending 4.93 $ 3.78
Vested and Exercisable ending 4.61  
Unvested ending $ 5.99  
Options, Weighted Average Remaining Contractual Life    
Options Outstanding 5 years 11 months 8 days 5 years 1 month 17 days
Vested and Exercisable ending 5 years 1 month 2 days  
Unvested ending 8 years 9 months 18 days  
Options outstanding, Aggregate Intrinsic Value    
Options Outstanding beginning $ 64,664,821  
Options exercised 27,534,623  
Options Outstanding ending 12,239,876 $ 64,664,821
Vested and Exercisable ending 12,239,876  
Unvested ending $ 0