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Commitment and Contingencies (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Sep. 30, 2022
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans in process | $ 2,270,038 | $ 3,006,023
Off-balance-sheet credit reserve | 26,500 | 32,500
Financing Receivable |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans in process | $ 4,088,046 | $ 4,947,570

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