v3.25.1
Fair Value Of Financial Instruments (Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Sep. 30, 2024
Mar. 31, 2024
Assets:      
AFS Securities $ 961,417 $ 856,266  
Significant Unobservable Inputs (Level 3) [Member]      
Assets:      
Loans receivable 50,200   $ 1,200
Carrying Amount [Member]      
Assets:      
Cash and cash equivalents 340,389 217,307  
AFS Securities 961,417 856,266  
Loans receivable 7,875,905 7,907,338  
FHLB stock 99,334 101,175  
Interest rate swaps 2,652 2,103  
Liabilities:      
Deposits 6,372,545 6,129,982  
Borrowings 2,142,956 2,179,564  
Estimated Fair Value [Member]      
Assets:      
Cash and cash equivalents 340,389 217,307  
AFS Securities 961,417 856,266  
Loans receivable 7,562,591 7,660,535  
FHLB stock 99,334 101,175  
Interest rate swaps 2,652 2,103  
Liabilities:      
Deposits 6,371,893 6,135,652  
Borrowings 2,133,424 2,169,403  
Estimated Fair Value [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]      
Assets:      
Cash and cash equivalents 340,389 217,307  
AFS Securities 0 0  
Loans receivable 0 0  
FHLB stock 99,334 101,175  
Interest rate swaps 0 0  
Liabilities:      
Deposits 3,460,099 3,164,672  
Borrowings 0 0  
Estimated Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member]      
Assets:      
Cash and cash equivalents 0 0  
AFS Securities 961,417 856,266  
Loans receivable 0 0  
FHLB stock 0 0  
Interest rate swaps 2,652 2,103  
Liabilities:      
Deposits 2,911,794 2,970,980  
Borrowings 2,133,424 2,169,403  
Estimated Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member]      
Assets:      
Cash and cash equivalents 0 0  
AFS Securities 0 0  
Loans receivable 7,562,591 7,660,535  
FHLB stock 0 0  
Interest rate swaps 0 0  
Liabilities:      
Deposits 0 0  
Borrowings $ 0 $ 0