v3.25.2
Loans And Allowance For Credit Losses (Allowance For Credit Losses And Classified Narrative) (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Jun. 30, 2025
Sep. 30, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]    
Residential loans, partial or full charge-off, number of days past due 180 days  
Home equity lines of credit equity loans and residential loans modified in a troubled debt restructuring charge-offs, days past due 90 days  
All classes of loans partial or full charge-off, sheriff sale scheduled within number of days 60 days  
All classes of loans, all borrowers filed Chapter 7 Bankruptcy, recognized partial or full charge-off, days since notification 60 days  
All classes of loans borrower filed bankruptcy, recognized partial or full charge-off, days past due 30 days  
Net reduction in ACL due to quantitative adjustment $ (3,382) $ (5,519)
Collateral-Dependent loans, Days Past Due Minimum 30 days