Quarterly report [Sections 13 or 15(d)]

Stock-based Compensation - Narrative (Details)

v3.25.2
Stock-based Compensation - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Sep. 30, 2024
Jan. 27, 2015
Class Of Stock [Line Items]            
Stock compensation expense $ 195,000 $ 175,000        
Board of Directors Fees            
Class Of Stock [Line Items]            
Stock compensation expense 130,000 118,000 $ 368,000 $ 375,000    
Restricted Stock            
Class Of Stock [Line Items]            
Stock compensation expense 65,000 $ 57,000 191,000 169,000    
Unrecognized expense 46,000   46,000   $ 150,000  
Options            
Class Of Stock [Line Items]            
Stock compensation expense 0   0      
Market Based Restricted Stock Units            
Class Of Stock [Line Items]            
Stock compensation expense     559,000 $ 544,000    
Unrecognized stock compensation $ 380,000   $ 380,000   $ 0  
2015 Option Grants            
Class Of Stock [Line Items]            
Number of shares authorized to be repurchased (up to) (in shares)           1,250,000
2015 Option Grants | Minimum            
Class Of Stock [Line Items]            
Award vesting period     1 year      
2015 Option Grants | Maximum            
Class Of Stock [Line Items]            
Award vesting period     6 years