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Loan Servicing Rights - Summary of Loans serviced for Freddie Mac (Details) - Freddie Mac - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Servicing Assets at Fair Value [Line Items]
Loans serviced for Freddie Mac, Principal amount	$ 356,158	$ 369,077	$ 384,619
Loans serviced for SBA, Principal amount	$ 859	$ 1,482	$ 1,882

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