Quarterly report pursuant to Section 13 or 15(d)

NET LOSS PER SHARE - Computation of Anti-dilutive Effect (Details)

v3.22.1
NET LOSS PER SHARE - Computation of Anti-dilutive Effect (Details) - shares
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share, amount (in shares) 21,247,313 20,817,025
Common stock warrants    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share, amount (in shares) 17,840,951 17,850,460
SAMA earnout shares    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share, amount (in shares) 570,211 570,211
Stock options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share, amount (in shares) 601,223 948,322
Unvested restricted share units    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share, amount (in shares) 2,234,928 1,448,032