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Consolidated Balance Sheets (Parenthetical) - USD ($) | Sep. 30, 2024 | Sep. 30, 2023
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Statement of Financial Position [Abstract] |  |
Mortgage-backed securities and other investments held to maturity-fair value | $ 166,007,000 | $ 253,766,000
Allowance for credit losses | $ 17,478,000 | $ 15,817,000
Preferred stock par value (in dollars per share) | $ 0.01 | $ 0.01
Preferred stock shares authorized (in shares) | 1,000,000 | 1,000,000
Preferred stock shares issued (in shares) | 0 | 0
Common stock par value (in dollars per share) | $ 0.01 | $ 0.01
Common stock shares authorized (in shares) | 50,000,000 | 50,000,000
Common stock shares issued (in shares) | 7,960,127 | 8,105,338
Common stock shares outstanding (in shares) | 7,960,127 | 8,105,338

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