Current report filing

Convertible Preferred Stock and Stockholders' Equity - Restricted Stock Agreements (Details)

v3.20.4
Convertible Preferred Stock and Stockholders' Equity - Restricted Stock Agreements (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting of restricted Common Stock $ 6 $ 6    
Weighted-average remaining contractual term (in years) 7 years 10 months 6 days   7 years 10 months 2 days  
Restricted Stock Agreements        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares issued       27,850,000
Share price       $ 0.0001
Percentage of shares on which right to repurchase lapses       20.00%
Percentage of shares per month on which right to repurchase lapses       1.67%
Right to repurchase expiry term       4 years
Vesting of restricted Common Stock (in shares)     497,290  
Vesting of restricted Common Stock     $ 2,000  
Vesting period     4 years  
Weighted-average remaining contractual term (in years) 8 months 12 days