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

STOCKHOLDERS' EQUITY - Restricted Stock Agreements (Details)

v3.21.2
STOCKHOLDERS' EQUITY - Restricted Stock Agreements (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share price     $ 3.34      
Vesting of restricted Common Stock     $ 2 $ 7 $ 8  
Vesting period       1 year    
Weighted-average remaining contractual term (in years)   7 years 6 months 3 days   7 years 9 months 7 years 10 months 2 days  
Amount of convertible notes issued $ 200          
Shares issues upon conversion 340,923          
Accrued interest rate 2.57%          
Repurchase of common stock 76,461          
Unvested restricted stock units outstanding            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares issued           34,010,977
Share price           $ 0.0001
Vesting of restricted Common Stock (in shares)         607,300  
Vesting of restricted Common Stock         $ 2,000  
Vesting period         4 years  
Weighted-average remaining contractual term (in years)   1 year   7 months 6 days