Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stock option plan (Details)

v3.23.2
Stock-Based Compensation - Stock option plan (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Shares Underlying Options          
Outstanding at beginning (in shares) 495,083 497,402 497,402    
Granted (in dollars per share) 375,168 0 375,168 0  
Forfeited (in dollars per share) (12,294) (2,287)      
Exercised (in dollars per share) 0 (32)      
Outstanding at ending (in shares) 857,957 495,083 857,957   497,402
Exercisable at the end (in shares) 488,148   488,148    
Weighted Average Exercise Price          
Outstanding at beginning (in dollars per share) $ 5.16 $ 5.16 $ 5.16    
Granted (in dollars per share) 2.74 0      
Forfeited (in dollars per share) 2.88 3.78      
Exercised (in dollars per share) 0 3.92      
Outstanding at ending (in dollars per share) 4.14 $ 5.16 4.14   $ 5.16
Exercisable (in dollars per share) $ 5.18   $ 5.18    
Weighted Average Remaining Contractual Term (in years)          
Outstanding (in years) 6 years 6 months 18 days 4 years 4 months 13 days     5 years 8 months 1 day
Exercisable at the end 4 years 1 month 6 days        
Aggregate Intrinsic Value, Outstanding at end $ 374   $ 374    
Aggregate Intrinsic Value, Exercisable at end $ 1   $ 1