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FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024
--- | --- | ---
Assets: |  |
Investment securities available for sale | $ 1,070,811 | $ 1,072,833
Interest rate contracts | 23,331 | 54,362
Total assets | 1,094,142 | 1,127,195
Liabilities |  |
Interest rate contracts | 9,136 | 0
Total liabilities | 9,136 |
Debt securities |  |
Assets: |  |
Investment securities available for sale | 585,398 | 601,780
Asset-backed securities |  |
Assets: |  |
Investment securities available for sale | 74,091 | 80,440
Collateralized loan obligations |  |
Assets: |  |
Investment securities available for sale | 378,333 | 389,543
Corporate bonds |  |
Assets: |  |
Investment securities available for sale | 132,974 | 131,797
Mortgage-backed securities |  |
Assets: |  |
Investment securities available for sale | 485,413 | 471,053
Residential pass-through securities |  |
Assets: |  |
Investment securities available for sale | 347,851 | 337,264
Commercial pass-through securities |  |
Assets: |  |
Investment securities available for sale | 137,562 | 133,789
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Interest rate contracts | 0 | 0
Total assets | 0 | 0
Liabilities |  |
Interest rate contracts | 0 |
Total liabilities | 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Debt securities |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Asset-backed securities |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateralized loan obligations |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate bonds |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential pass-through securities |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial pass-through securities |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Investment securities available for sale | 1,070,811 | 1,072,833
Interest rate contracts | 23,331 | 54,362
Total assets | 1,094,142 | 1,127,195
Liabilities |  |
Interest rate contracts | 9,136 |
Total liabilities | 9,136 |
Significant Other Observable Inputs (Level 2) | Debt securities |  |
Assets: |  |
Investment securities available for sale | 585,398 | 601,780
Significant Other Observable Inputs (Level 2) | Asset-backed securities |  |
Assets: |  |
Investment securities available for sale | 74,091 | 80,440
Significant Other Observable Inputs (Level 2) | Collateralized loan obligations |  |
Assets: |  |
Investment securities available for sale | 378,333 | 389,543
Significant Other Observable Inputs (Level 2) | Corporate bonds |  |
Assets: |  |
Investment securities available for sale | 132,974 | 131,797
Significant Other Observable Inputs (Level 2) | Mortgage-backed securities |  |
Assets: |  |
Investment securities available for sale | 485,413 | 471,053
Significant Other Observable Inputs (Level 2) | Residential pass-through securities |  |
Assets: |  |
Investment securities available for sale | 347,851 | 337,264
Significant Other Observable Inputs (Level 2) | Commercial pass-through securities |  |
Assets: |  |
Investment securities available for sale | 137,562 | 133,789
Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Interest rate contracts | 0 | 0
Total assets | 0 | 0
Liabilities |  |
Interest rate contracts | 0 |
Total liabilities | 0 |
Significant Unobservable Inputs (Level 3) | Debt securities |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Significant Unobservable Inputs (Level 3) | Asset-backed securities |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Significant Unobservable Inputs (Level 3) | Collateralized loan obligations |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Significant Unobservable Inputs (Level 3) | Corporate bonds |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Significant Unobservable Inputs (Level 3) | Mortgage-backed securities |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Significant Unobservable Inputs (Level 3) | Residential pass-through securities |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Significant Unobservable Inputs (Level 3) | Commercial pass-through securities |  |
Assets: |  |
Investment securities available for sale | 0 | 0
Interest Rate Contract |  |
Assets: |  |
Interest rate contracts | 23,331 | 54,362
Liabilities |  |
Interest rate contracts | 9,136 | 0
Interest Rate Contract | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Interest rate contracts | 0 | 0
Liabilities |  |
Interest rate contracts | 0 |
Interest Rate Contract | Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Interest rate contracts | 23,331 | 54,362
Liabilities |  |
Interest rate contracts | 9,136 |
Interest Rate Contract | Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Interest rate contracts | 0 | $ 0
Liabilities |  |
Interest rate contracts | $ 0 |

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