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BORROWINGS (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Jan. 31, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Repurchase Agreements | $ 201,499 |  | $ 200,657
Total short-term borrowings | 601,499 |  | 485,607
Subordinated Debt | 44,331 |  | 44,331
Short-term Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Repurchase Agreements | 201,499 |  | 200,657
Short-Term Bank Loans and Notes Payable | 225,000 |  | 135,000
FHLBB and Correspondent Bank Overnight Borrowings | 0 |  | 24,950
Federal Home Loan Bank, Advance, Maturity, Year One | 175,000 |  | $ 125,000
Short-term Debt [Member] | Bank Term Funding Program |  |  |
Debt Instrument [Line Items] |  |  |
Face amount | $ 225,000 | $ 135,000 |
Interest rate | 4.76% |  |

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