Annual report pursuant to Section 13 and 15(d)

SHARE-BASED COMPENSATION- Stock Options Activity (Details)

v3.21.1
SHARE-BASED COMPENSATION- Stock Options Activity (Details) - 2018 Equity Incentive Plan - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding, beginning balance (in shares) 1,711,084 2,037,257 0
Granted (in shares) 15,000 0 2,044,815
Exercised (in shares) 0 0 0
Forfeited (in shares)     (7,558)
Expired (in shares)     0
Forfeited or expired (in shares) (220,045) (326,173)  
Outstanding, ending balance (in shares) 1,506,039 1,711,084 2,037,257
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]      
Outstanding, beginning balance, weighted-average exercise price (in dollars per share) $ 6.95 $ 6.95 $ 0
Granted, weighted-average exercise price (in dollars per share) 2.47 0 6.95
Exercised, weighted-average exercise price (in dollars per share) 0 0 0
Forfeited, weighted-average exercise price (in dollars per share) 6.95 6.95 6.95
Expired, weighted-average exercise price (in dollars per share)     0
Outstanding, ending balance, weighted-average exercise price (in dollars per share) $ 6,910 $ 6.95 $ 6.95
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]      
Outstanding, weighted-average remaining contractual terms (in years) 7 years 9 months 18 days 8 years 7 months 6 days 9 years 7 months 6 days
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Aggregate Intrinsic Value [Roll Forward]      
Outstanding, beginning balance, aggregate intrinsic value $ 0 $ 2,139  
Outstanding, ending balance, aggregate intrinsic value $ 203 $ 0 $ 2,139
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]      
Vested and expected to vest (in shares) 1,506,039    
Vested and expected to vest, weighted average exercise price (in dollars per share) $ 6.91    
Vested and expected to vest, weighted average remaining contractual term (in years) 7 years 9 months 18 days    
Vested and expected to vest, aggregate intrinsic value $ 203    
Exercisable (in shares) 1,125,755    
Exercisable, weighted average exercise price (in dollars per share) $ 6.95    
Exercisable, weighted average remaining contractual term (in years) 7 years 9 months 18 days    
Exercisable, aggregate intrinsic value $ 101