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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
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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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