Annual report pursuant to Section 13 and 15(d)

NET LOSS PER SHARE - Antidilutive securities excluded from computation of earnings per share (Details)

v3.20.4
NET LOSS PER SHARE - Antidilutive securities excluded from computation of earnings per share (Details) - shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded 47,376 24,293
Common Stock options outstanding    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded 19,553 18,072
Restricted stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded 683  
RSU    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded 279 5,587
Warrant    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded 25,010 634
Unvested Trine Founder Shares, held in escrow    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded 1,851