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Stock Compensation Plans (Details) - USD ($)
3 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Sep. 30, 2024
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 $ 239,000 $ 469,000        
Number of unvested stock options (shares) 76,530 124,640        
Unvested stock options, aggregate grant date fair value $ 464,000 $ 725,000,000        
Unvested stock options, aggregate intrinsic value 328,000          
Stock options vested during period, aggregate grant date fair value $ 326 $ 326        
Stock options vested during period (shares) 100 100        
Stock options, outstanding, aggregate intrinsic value $ 1,450,000 $ 2,220,000        
Unrecognized compensation expense, non-vested options $ 437,000          
Unrecognized compensation expense, non-vested options, amortization period (in years) 1 year 7 months 6 days          
Number of unvested shares 48,565   49,015 26,150    
Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period (years) 5 years          
Granted (shares) 0 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) 2 years 5 months 12 days          
Cost not yet recognized $ 1,340,000          
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) 155,705       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