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Securities - Securities Available for Sale (Details) - USD ($) | Jun. 30, 2024 | Jun. 30, 2023
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Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | $ 1,203,506,000 | $ 1,383,867,000
Gross Unrealized Gains | 2,920,000 | 274,000
Gross Unrealized Losses | 133,593,000 | 156,412,000
Allowance for Credit Losses | 0 | 0
Investment securities available for sale | 1,072,833,000 | 1,227,729,000
Debt securities: |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 618,179,000 | 679,862,000
Gross Unrealized Gains | 2,855,000 | 272,000
Gross Unrealized Losses | 19,254,000 | 31,950,000
Allowance for Credit Losses | 0 | 0
Investment securities available for sale | 601,780,000 | 648,184,000
Asset-backed securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 80,305,000 | 138,281,000
Gross Unrealized Gains | 217,000 | 4,000
Gross Unrealized Losses | 82,000 | 2,115,000
Allowance for Credit Losses | 0 | 0
Investment securities available for sale | 80,440,000 | 136,170,000
Collateralized loan obligations |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 386,983,000 | 381,915,000
Gross Unrealized Gains | 2,574,000 | 268,000
Gross Unrealized Losses | 14,000 | 5,187,000
Allowance for Credit Losses | 0 | 0
Investment securities available for sale | 389,543,000 | 376,996,000
Corporate bonds |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 150,891,000 | 159,666,000
Gross Unrealized Gains | 64,000 | 0
Gross Unrealized Losses | 19,158,000 | 24,648,000
Allowance for Credit Losses | 0 | 0
Investment securities available for sale | 131,797,000 | 135,018,000
Mortgage-backed securities: |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 585,327,000 | 704,005,000
Gross Unrealized Gains | 65,000 | 2,000
Gross Unrealized Losses | 114,339,000 | 124,462,000
Allowance for Credit Losses | 0 | 0
Investment securities available for sale | 471,053,000 | 579,545,000
Residential pass-through securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 429,473,000 | 539,506,000
Gross Unrealized Gains | 2,000 | 2,000
Gross Unrealized Losses | 92,211,000 | 103,357,000
Allowance for Credit Losses | 0 | 0
Investment securities available for sale | 337,264,000 | 436,151,000
Commercial pass-through securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 155,854,000 | 164,499,000
Gross Unrealized Gains | 63,000 | 0
Gross Unrealized Losses | 22,128,000 | 21,105,000
Allowance for Credit Losses | 0 | 0
Investment securities available for sale | $ 133,789,000 | $ 143,394,000

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