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Loans Receivable and Allowance for Loan Losses - Loan Modifications (Details) - Commercial business loans $ in Thousands | 12 Months Ended
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Sep. 30, 2025 USD ($)
Extended Maturity And Deed Secured |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost Basis | $ 256
% of Total Loan Type | 0.20%
Weighted average term increase from modification | 3 months
Extended Maturity And Monthly Payment Reduction |
Financing Receivable, Troubled Debt Restructuring [Line Items] |
Amortized Cost Basis | $ 1
% of Total Loan Type | 0.00%
Weighted average term increase from modification | 7 months
Period of payment reduction after signing | 1 month 15 days

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- Definition Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
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