v3.26.1
Defined Pension Plans - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Jun. 30, 2025
Defined Benefit Plan Disclosure [Line Items]      
Proceeds from sales of investment securities available-for-sale $ 3,477 $ 23,012  
Available-for-sale securities, gross realized gains 62 0  
Supplemental Employee Retirement Plan      
Defined Benefit Plan Disclosure [Line Items]      
Net periodic cost (benefit) $ 108 $ 113 $ 450