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STOCK-BASED COMPENSATION PLANS (Details 1)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Fair value of stock option grants    
Expected term (years) 6 years 3 months 6 years 3 months
Risk-free interest rate 3.00% 1.83%
Expected volatility 123.00% 124.00%
Expected dividend yield 0.00% 0.00%