Quarterly report [Sections 13 or 15(d)]

Stock-based Compensation - Narrative (Details)

v3.25.1
Stock-based Compensation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Sep. 30, 2024
Jan. 27, 2015
Class Of Stock [Line Items]            
Stock compensation expense $ 185 $ 175        
Board Of Directors Fees            
Class Of Stock [Line Items]            
Stock compensation expense 119 119 $ 238 $ 257    
Restricted Stock            
Class Of Stock [Line Items]            
Stock compensation expense 66 $ 56 126 112    
Unrecognized expense 70   70   $ 150  
Market Based Restricted Stock Units            
Class Of Stock [Line Items]            
Stock compensation expense     364 $ 369    
Share-based payment arrangement, nonvested award, excluding option, cost not yet recognized, amount 422   $ 422      
Unrecognized stock compensation         $ 0  
Options            
Class Of Stock [Line Items]            
Stock compensation expense $ 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