Quarterly report pursuant to Section 13 or 15(d)

Stock Options - Narrative (Details)

v3.23.1
Stock Options - Narrative (Details) - USD ($)
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Aug. 27, 2020
Sep. 18, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Aggregated intrinsic value $ 0      
Share-based Payment Arrangement, Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 400,000 $ 400,000    
Unrecognized share-based compensation expense $ 900,000      
Weighted average remaining contractual life (in years) 6 years 3 months 3 days      
Share-based Payment Arrangement, Option | Termination of certain employees        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vested (in shares) 95,758      
Vested in period, fair value $ 100,000      
Plan 2015        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares authorized (in shares)       216,767
Plan 2020        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares authorized (in shares)     3,000,000