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Investment Securities - Summary of Unrealized Losses Categorized by Length of Time of Continuous Loss Position and Fair Value (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024
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Schedule of Held-to-Maturity Securities [Line Items] |  |
Less than 12 Months, Fair Value | $ 539 |
Less than 12 Months, Unrealized Losses | (49) |
More than 12 Months, Fair Value | 127,231 | $ 128,731
More than 12 Months, Unrealized Losses | (23,379) | (26,787)
Total, Fair Value | 127,770 | 128,731
Total, Unrealized Losses | (23,428) | (26,787)
Federal National Mortgage Association |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
Less than 12 Months, Fair Value | 539 |
Less than 12 Months, Unrealized Losses | (49) |
More than 12 Months, Fair Value | 77,405 | 78,160
More than 12 Months, Unrealized Losses | (14,891) | (16,822)
Total, Fair Value | 77,944 | 78,160
Total, Unrealized Losses | (14,940) | (16,822)
Federal Home Loan Mortgage Corporation |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
More than 12 Months, Fair Value | 41,204 | 41,838
More than 12 Months, Unrealized Losses | (7,045) | (8,252)
Total, Fair Value | 41,204 | 41,838
Total, Unrealized Losses | (7,045) | (8,252)
Government National Mortgage Association |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
More than 12 Months, Fair Value |  | 270
More than 12 Months, Unrealized Losses |  | (3)
Total, Fair Value |  | 270
Total, Unrealized Losses |  | (3)
Subordinated Debt |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
More than 12 Months, Fair Value | 6,447 | 6,262
More than 12 Months, Unrealized Losses | (1,303) | (1,488)
Total, Fair Value | 6,447 | 6,262
Total, Unrealized Losses | (1,303) | (1,488)
CMO |  |
Schedule of Held-to-Maturity Securities [Line Items] |  |
More than 12 Months, Fair Value | 2,175 | 2,201
More than 12 Months, Unrealized Losses | (140) | (222)
Total, Fair Value | 2,175 | 2,201
Total, Unrealized Losses | $ (140) | $ (222)

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