Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION - Option valuation assumptions for options granted (Details)

v3.20.4
STOCK-BASED COMPENSATION - Option valuation assumptions for options granted (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
STOCK-BASED COMPENSATION    
Expected volatility 60.78% 46.17%
Expected dividend yield 0.00% 0.00%
Expected life (in years) 5 years 11 months 9 days 5 years 11 months 9 days
Weighted average risk free rate 0.41% 1.87%