Post-effective amendment to a registration statement that is not immediately effective upon filing

STOCK BASED COMPENSATION - Common Stock to Consultants (Details)

v3.21.1
STOCK BASED COMPENSATION - Common Stock to Consultants (Details) - Consultant - $ / shares
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Risk-free interest rate, Minimum   0.60% 1.40%
Risk-free interest rate, Maximum   0.80% 3.10%
Risk-free interest rate 0.80%    
Expected volatility, Minimum   54.30% 52.40%
Expected volatility, Maximum   54.80% 61.50%
Expected volatility 54.30%    
Expected life, Minimum (in years)   9 years 4 months 24 days 6 years 2 months 12 days
Expected life, Maximum (in years)   10 years 10 years
Expected life (in years) 10 years    
Fair value of Common Stock, Minimum   $ 1.40  
Fair value of Common Stock, Maximum   $ 7.98  
Fair value of Common Stock $ 3.34   $ 3.34