General form of registration statement for all companies including face-amount certificate companies

CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY - Common Stock to Consultants (Details)

v3.20.4
CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY - Common Stock to Consultants (Details) - Consultant - $ / shares
 9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Risk-free interest rate, Minimum 0.60% 1.50% 1.40% 2.10%
Risk-free interest rate, Maximum 0.80% 2.50% 3.10% 3.10%
Expected volatility, Minimum 54.30% 54.40% 52.40% 53.70%
Expected volatility, Maximum 54.80% 54.90% 61.50% 61.50%
Expected life, Minimum (in years) 9 years 4 months 24 days 9 years 4 months 24 days 6 years 2 months 12 days 7 years 2 months 12 days
Expected life, Maximum (in years) 10 years 10 years 10 years 10 years
Fair value of Common Stock   $ 4.08 $ 4.08 $ 3.39
Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Fair value of Common Stock $ 1.71      
Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Fair value of Common Stock $ 9.75