Quarterly report pursuant to Section 13 or 15(d)

NET LOSS PER SHARE - Antidilutive Shares (Details)

v3.21.1
NET LOSS PER SHARE - Antidilutive Shares (Details) - shares
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive shares 30,547,000 25,535,000
Stock options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive shares 25,547,000 20,535,000
Performance stock options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive shares 5,000,000 5,000,000
Unvested stock options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive shares 8,000,000 8,000,000