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SECURITIES - Securities Available for Sale (Details) - USD ($) | Sep. 30, 2024 | Jun. 30, 2024
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Schedule of Available for Sale Securities [Line Items] |  |
Amortized Cost | $ 1,177,595,000 | $ 1,203,506,000
Gross Unrealized Gains | 3,328,000 | 2,920,000
Gross Unrealized Losses | 110,112,000 | 133,593,000
Allowance for Credit Losses | 0 | 0
Fair Value | 1,070,811,000 | 1,072,833,000
Debt securities |  |
Schedule of Available for Sale Securities [Line Items] |  |
Amortized Cost | 601,049,000 | 618,179,000
Gross Unrealized Gains | 2,563,000 | 2,855,000
Gross Unrealized Losses | 18,214,000 | 19,254,000
Allowance for Credit Losses | 0 | 0
Fair Value | 585,398,000 | 601,780,000
Asset-backed securities |  |
Schedule of Available for Sale Securities [Line Items] |  |
Amortized Cost | 74,136,000 | 80,305,000
Gross Unrealized Gains | 145,000 | 217,000
Gross Unrealized Losses | 190,000 | 82,000
Allowance for Credit Losses | 0 | 0
Fair Value | 74,091,000 | 80,440,000
Collateralized loan obligations |  |
Schedule of Available for Sale Securities [Line Items] |  |
Amortized Cost | 376,041,000 | 386,983,000
Gross Unrealized Gains | 2,317,000 | 2,574,000
Gross Unrealized Losses | 25,000 | 14,000
Allowance for Credit Losses | 0 | 0
Fair Value | 378,333,000 | 389,543,000
Corporate bonds |  |
Schedule of Available for Sale Securities [Line Items] |  |
Amortized Cost | 150,872,000 | 150,891,000
Gross Unrealized Gains | 101,000 | 64,000
Gross Unrealized Losses | 17,999,000 | 19,158,000
Allowance for Credit Losses | 0 | 0
Fair Value | 132,974,000 | 131,797,000
Mortgage-backed securities |  |
Schedule of Available for Sale Securities [Line Items] |  |
Amortized Cost | 576,546,000 | 585,327,000
Gross Unrealized Gains | 765,000 | 65,000
Gross Unrealized Losses | 91,898,000 | 114,339,000
Allowance for Credit Losses | 0 | 0
Fair Value | 485,413,000 | 471,053,000
Residential pass-through securities |  |
Schedule of Available for Sale Securities [Line Items] |  |
Amortized Cost | 421,377,000 | 429,473,000
Gross Unrealized Gains | 20,000 | 2,000
Gross Unrealized Losses | 73,546,000 | 92,211,000
Allowance for Credit Losses | 0 | 0
Fair Value | 347,851,000 | 337,264,000
Commercial pass-through securities |  |
Schedule of Available for Sale Securities [Line Items] |  |
Amortized Cost | 155,169,000 | 155,854,000
Gross Unrealized Gains | 745,000 | 63,000
Gross Unrealized Losses | 18,352,000 | 22,128,000
Allowance for Credit Losses | 0 | 0
Fair Value | $ 137,562,000 | $ 133,789,000

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