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Equity Incentive Plans (Narrative) (Details) - USD ($)
 9 Months Ended
Jun. 30, 2023
Jan. 31, 2023
Sep. 30, 2022
Jan. 12, 2022
Sep. 30, 2023
Sep. 30, 2022
Apr. 27, 2023
Defined Benefit Plan Disclosure [Line Items]              
Expected future expenses relating to non-vested restricted shares         $ 960,000    
Expected future compensation expense, weighted average period for recognition         2 years 3 months    
Stock option expense         $ 99,000 $ 180,000  
Restricted stock expense         $ 303,000 $ 278,000  
Options [Member]              
Defined Benefit Plan Disclosure [Line Items]              
Shares underlying unexercised options         175,080    
Expected future compensation expense, unexercised options         $ 302,000    
Expected future compensation expense, weighted average period for recognition         3 years 1 month 13 days    
Options exercisable - number of option shares         800,895    
2023 Equity Incentive Plan [Member]              
Defined Benefit Plan Disclosure [Line Items]              
Shares authorized for issuance             1,000,000
Directors [Member] | Restricted Stock [Member]              
Defined Benefit Plan Disclosure [Line Items]              
Restricted stock issued   27,000          
Vesting period   4 years          
Directors [Member] | 2018 Equity Incentive Plan [Member] | Restricted Stock [Member]              
Defined Benefit Plan Disclosure [Line Items]              
Restricted stock issued       33,000      
Vesting period       4 years      
Executive Officers [Member] | 2018 Equity Incentive Plan [Member] | Restricted Stock [Member]              
Defined Benefit Plan Disclosure [Line Items]              
Restricted stock issued     36,000        
Director And Officer [Member] | Restricted Stock [Member]              
Defined Benefit Plan Disclosure [Line Items]              
Restricted stock issued 25,252