Annual report pursuant to Section 13 and 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
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of earnings per share, amount (in shares) 20,771,386 20,079,536
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 17,963,591
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 1,140,423
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) 784,193 896,888
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) 1,576,031 78,634