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Commitment and Contingencies (Tables)	3 Months Ended
	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Schedule of LIHTC Investments	The Company records the investments in affordable housing partnerships of $122,319,000 and $112,342,000 as of December 31, 2024 and September 30, 2024, respectively, as a component of other assets on the Consolidated Statements of Financial Condition and uses the proportional amortization method to account for the investments. The Company's unfunded contribution commitments to these investments were $48,389,000 and $41,702,000 as of December 31, 2024 and September 30, 2024, respectively, which are recorded as a component of other liabilities on the Consolidated Statements of Financial Condition. Amortization related to these investments is recorded as a component of the provision for income taxes on the Condensed Consolidated Statements of Operation.

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Schedule Of Investments, Investment Program, Proportional Amortization Method

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