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Commitment and Contingencies (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Sep. 30, 2023
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans in process | $ 1,303,978 | $ 1,895,940
Off-balance-sheet credit reserve | 23,500 | 24,500
Financing Receivable |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans in process | $ 3,859,416 | $ 3,625,333

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