Registration of securities issued in business combination transactions

STOCKHOLDERS' EQUITY - Restricted Stock Agreements (Details)

v3.21.2
STOCKHOLDERS' EQUITY - Restricted Stock Agreements (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2018
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted-average remaining contractual term (in years)   7 years 4 months 24 days 7 years 9 months 7 years 10 months 2 days  
Amount of convertible notes issued $ 0.2        
Shares issues upon conversion 340,923        
Accrued interest rate 2.57%        
Repurchase of common stock 76,461        
Restricted Stock awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares issued         34,010,977
Share price         $ 0.0001
Weighted-average remaining contractual term (in years)   8 months 12 days 7 months 6 days