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Stock Based Compensation - Narrative (Details) - USD ($)
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options, intrinsic value, vested $ 0 $ 0    
Unrecognized stock-based compensation expense for stock options $ 30,000      
Unvested restricted shares outstanding (in shares) 0      
Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option compensation expense $ 31,000 31,000    
Cost not yet recognized, period for recognition 3 months      
Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option compensation expense $ 0 0    
Unamortized expense related to restricted stock $ 0 $ 0    
Unvested restricted shares outstanding (in shares) 0   0 42
2019 Equity Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares available for grant (in shares)     3