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
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Mar. 31, 2020
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%  
Expected volatility, Minimum 54.30% 52.40%  
Expected volatility, Maximum 54.80% 61.50%  
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  
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