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FAIR VALUES OF FINANCIAL INSTRUMENTS - Fair Value of Derivatives as of Measurement Date (Level 2 Inputs) (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Fair value measurement |  |
Fair Value | $ 1,195,990 | $ 1,259,137
U.S. Government agencies |  |
Fair value measurement |  |
Fair Value | 78,982 | 91,440
Mortgage Backed Securities - residential |  |
Fair value measurement |  |
Fair Value | 541,320 | 569,885
Mortgage Backed Securities - commercial |  |
Fair value measurement |  |
Fair Value | 13,661 | 7,483
Collateralized mortgage obligations |  |
Fair value measurement |  |
Fair Value | 163,026 | 180,829
State and municipal |  |
Fair value measurement |  |
Fair Value | 360,328 | 370,811
Municipal taxable |  |
Fair value measurement |  |
Fair Value | 35,777 | 34,285
U.S. Treasury |  |
Fair value measurement |  |
Fair Value |  | 1,402
Collateralized debt obligations |  |
Fair value measurement |  |
Fair Value | 2,896 | 3,002
Level 1 |  |
Fair value measurement |  |
Fair Value | 0 | 0
Level 2 |  |
Fair value measurement |  |
Fair Value | 1,192,289 | 1,254,955
Derivative Assets | 3,060 | 2,878
Derivative Liabilities | (3,060) | (2,878)
Level 2 | U.S. Government agencies |  |
Fair value measurement |  |
Fair Value | 78,982 | 91,440
Level 2 | Mortgage Backed Securities - residential |  |
Fair value measurement |  |
Fair Value | 541,320 | 569,885
Level 2 | Mortgage Backed Securities - commercial |  |
Fair value measurement |  |
Fair Value | 13,661 | 7,483
Level 2 | Collateralized mortgage obligations |  |
Fair value measurement |  |
Fair Value | 163,026 | 180,829
Level 2 | State and municipal |  |
Fair value measurement |  |
Fair Value | 359,523 | 369,631
Level 2 | Municipal taxable |  |
Fair value measurement |  |
Fair Value | 35,777 | 34,285
Level 2 | U.S. Treasury |  |
Fair value measurement |  |
Fair Value |  | 1,402
Level 3 |  |
Fair value measurement |  |
Fair Value | 3,701 | 4,182
Level 3 | State and municipal |  |
Fair value measurement |  |
Fair Value | 805 | 1,180
Level 3 | Collateralized debt obligations |  |
Fair value measurement |  |
Fair Value | $ 2,896 | $ 3,002

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