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STOCK-BASED COMPENSATION (Details)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Forfeiture Rate 0.00% 0.00%
Expected dividend yield 0.00% 0.00%
Minimum [Member]    
Expected volatility 71.00% 62.91%
Expected term 4 years 7 days 4 years 9 months 7 days
Risk-free interest rate 2.55% 2.56%
Maximum [Member]    
Expected volatility 121.00% 62.98%
Expected term 4 years 7 months 21 days 5 years
Risk-free interest rate 2.72% 2.57%