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STOCKHOLDERS' EQUITY (Details) - Stock Options [Member]
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free interest rate - minimum 2.78% 1.84%
Risk-free interest rate - maximum 2.82% 2.01%
Volatility - minimum 61.80% 61.56%
Volatility - maximum 63.34% 63.95%
Dividend yield 0.00% 0.00%
Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Term 5 years 6 months 5 years 6 months
Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Term 6 years 3 months 6 years 3 months