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Stock Compensation Plans (Details) - USD ($)
 3 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Sep. 30, 2023
Jan. 28, 2020
Jan. 27, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Aggregate intrinsic value of options exercised during the period $ 469,000 $ 244,000      
Number of unvested stock options (shares) 124,640 191,710      
Unvested stock options, aggregate grant date fair value $ 725,000 $ 1,080,000.00      
Unvested stock options, aggregate intrinsic value 704,000        
Stock options vested during period, aggregate grant date fair value $ 326 $ 652      
Stock options vested during period (shares) 100 200      
Stock options, outstanding, aggregate intrinsic value $ 2,220,000 $ 4,280,000      
Unrecognized compensation expense, non-vested options $ 711,000        
Unrecognized compensation expense, non-vested options, amortization period (in years) 2 years 7 days        
Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized (in shares) 300,000        
Award vesting percentage 20.00%        
Award vesting period (years) 5 years        
Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Contractual term 10 years        
Unrecognized compensation expense, non-vested options, amortization period (in years) 2 years 9 months 10 days        
Number of unvested shares 26,150 0 26,150    
Cost not yet recognized $ 676,000        
Equity Incentive Plan 2014          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized (in shares)         352,366
Number of shares available for grant (in shares) 7,816        
Equity Incentive Plan 2019          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized (in shares) 178,650     350,000  
Equity Incentive Plan 2019 | Employee          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized (in shares)       300,000  
Equity Incentive Plan 2019 | Directors          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized (in shares)       50,000