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DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
Derivative [Line Items] |  |
Securities available for sale, at estimated fair value | $ 1,296,294,000 | $ 1,299,014,000
Gain (loss) on hedging activity | 6,500,000 |
Cash collateral received from counterparties under master netting agreements | 46,760,000 | $ 82,135,000
Fair Value Hedging |  |
Derivative [Line Items] |  |
Securities available for sale, at estimated fair value | 460,400,000 |
Interest Rate Swaps | Cash Flow Hedging |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 1,010,000,000.00 |

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