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INVESTMENTS (Amortized Cost and Fair Values of HTM Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Held-to-maturity, Amortized Cost |  |
Due in one year or less | $ 502 |
Due after one year through five years | 1,790 |
Due after five years through ten years | 37,471 |
Due after ten years | 43,369 |
Due in one year or less | 81,237 |
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date | 83,132 |
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, without Single Maturity Date | 457,217 |
Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Fair Value | 415,280 |
Amortized Cost | 540,349 | $ 544,931
Held-to-maturity, Fair Value |  |
Due in one year or less | 498 |
Due after one year through five years | 1,798 |
Due after five years through ten years | 36,110 |
Due after ten years | 42,831 |
Fair value, total | $ 496,517 | $ 510,595

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