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Stock Compensation Plans (Details) - USD ($)
 9 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Sep. 30, 2023
Jan. 28, 2020
Jan. 27, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted (shares) 0 1,000      
Aggregate intrinsic value of options exercised during the period $ 501,000 $ 345,000      
Number of unvested stock options (shares) 121,820 186,910      
Unvested stock options, aggregate grant date fair value $ 709,000 $ 1,050,000.00      
Unvested stock options, aggregate intrinsic value 221,000        
Stock options vested during period, aggregate grant date fair value $ 2,000 $ 17,000      
Stock options vested during period (shares) 300 3,200      
Stock options, outstanding, aggregate intrinsic value $ 1,070,000.00 $ 1,580,000      
Unrecognized compensation expense, non-vested options $ 579,000        
Unrecognized compensation expense, non-vested options, amortization period (in years) 1 year 9 months 21 days        
Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting percentage 20.00%        
Award vesting period (years) 5 years        
Granted (shares) 0        
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) 1 year 11 months 23 days        
Number of unvested shares 26,150 0 26,150    
Cost not yet recognized $ 597,000        
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) 15,576        
Equity Incentive Plan 2019          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized (in shares) 182,070     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