Quarterly report [Sections 13 or 15(d)]

Stock-based Compensation - Narrative (Details)

v3.26.1
Stock-based Compensation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Sep. 30, 2025
Dec. 23, 2024
Jan. 27, 2015
Board of Directors Fees              
Class Of Stock [Line Items]              
Stock compensation expense $ 98 $ 119 $ 208 $ 238      
Restricted Stock              
Class Of Stock [Line Items]              
Stock compensation expense 42 66 108 126      
Market Based Restricted Stock Units              
Class Of Stock [Line Items]              
Stock compensation expense 140 $ 185 316 $ 364      
Unrecognized stock compensation $ 253   $ 253   $ 338    
Market Based Restricted Stock Units | MRSU Threshold 1              
Class Of Stock [Line Items]              
Number of MRSUs earned (in shares) 17,500   17,500     5,000  
2015 Option Grants              
Class Of Stock [Line Items]              
Number of shares authorized to be repurchased (up to) (in shares)             1,250,000