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COMMITMENTS, CONTINGENT LIABILITIES AND RESTRICTIONS (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024
Commitments and contingencies |  |  |  |
Contract amount of commitments and contingencies | $ 1,858,628 | $ 1,858,628 | $ 1,715,754 |
Solar energy tax credits investments |  |  |  |
Commitments and contingencies |  |  |  |
Investment in tax credits | 8,500 | 8,500 |  | $ 10,000
Unfunded commitments | 6,700 | 6,700 | 1,300 |
Commitments Fund | 3,100 | 3,100 |  |
Federal tax credits | 2,500 | 2,500 |  |
Amortization of income tax credit investments | 2,700 | 2,800 |  |
Income tax credit investments balance | 6,900 |  | 1,400 |
Commitments to extend credit |  |  |  |
Commitments and contingencies |  |  |  |
Contract amount of commitments and contingencies | 1,774,987 | 1,774,987 | 1,635,509 |
Standby letters of credit |  |  |  |
Commitments and contingencies |  |  |  |
Contract amount of commitments and contingencies | $ 83,641 | $ 83,641 | $ 80,245 |

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