Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION (Details 1)

v3.20.1
STOCK-BASED COMPENSATION (Details 1)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Risk-free interest rate - Minimum 2.30% 2.54%
Risk-free interest rate - Maximum 2.54% 2.81%
Expected stock price volatility - Minimum 107.12% 99.65%
Expected stock price volatility - Maximum 109.72% 109.22%
Expected dividend yield 0.00% 0.00%
Minimum [Member]    
Expected term of option 5 years 1 month 6 days 4 years 6 months
Maximum [Member]    
Expected term of option 10 years 7 years