v3.26.1
Loans Receivable And Allowance For Loan Losses - Amortized Cost of Collateral Dependent Loans (Details) - Collateral Pledged - USD ($)
$ in Thousands
Jun. 30, 2026
Sep. 30, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]    
Recorded Investment $ 8,556 $ 4,407
Related ACL 1,030 360
One-to four-family    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Recorded Investment 1,930 1,781
Related ACL 0 0
Commercial real estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Recorded Investment 4,534 159
Related ACL 480 0
Construction-custom & owner/builder (1)    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Recorded Investment   553
Related ACL   0
Home equity and second mortgage    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Recorded Investment 452 602
Related ACL 0 0
Consumer loans, other    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Recorded Investment 20 22
Related ACL 20 22
Commercial business    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Recorded Investment 1,620 1,290
Related ACL $ 530 $ 338