Quarterly report [Sections 13 or 15(d)]

Note 7 - Stock-based Compensation - Option Transaction Summary (Details)

v3.25.1
Note 7 - Stock-based Compensation - Option Transaction Summary (Details) - $ / shares
6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Options, outstanding (in shares) 366,984  
Weighted-average exercise price, outstanding (in dollars per share) $ 33.83  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross 38,198 111,299
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price $ 30.9 $ 26.18
Exercised, options (in shares) (4,021)  
Exercised, weighted-average exercise price (in dollars per share) $ 24.19  
Forfeited or expired, options (in shares) (895)  
Forfeited or expired, weighted-average exercise price (in dollars per share) $ 34.65  
Options, outstanding (in shares) 400,266  
Weighted-average exercise price, outstanding (in dollars per share) $ 33.64