Quarterly report pursuant to Section 13 or 15(d)

Share-based compensation - Options granted and outstanding (Details)

v3.23.1
Share-based compensation - Options granted and outstanding (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Options    
Options outstanding (in shares) 3,071,187  
Granted (in shares) 0  
Forfeited/Expired (in shares) (178,656)  
Options outstanding (in shares) 2,892,531 3,071,187
Options exercisable (in shares) 2,355,436  
Weighted Average Exercise Price    
Options outstanding (in dollars per share) $ 5.39  
Granted (in dollars per share) 0  
Forfeited/Expired (in dollars per share) 4.05  
Options outstanding (in dollars per share) 5.47 $ 5.39
Options exercisable, weighted average exercise price (in dollars per share) $ 5.67  
Weighted Average Remaining Contractual Life    
Options outstanding, weighted average remaining contractual term 6 years 3 months 18 days 7 years 2 months 12 days
Options exercisable, weighted average remaining contractual term 5 years 9 months 18 days  
Aggregate Intrinsic Value    
Options outstanding, aggregate intrinsic value $ 0 $ 0
Options exercisable, aggregate intrinsic value $ 0