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DERIVATIVE FINANCIAL INSTRUMENTS - Summary of Components of Interest Rate Swaps (Details) - Derivatives | 3 Months Ended | 12 Months Ended
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Mar. 31, 2024 | Dec. 31, 2023
Interest rate swaps - FHLB advances |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Weighted Average Pay Rate | 3.49% | 3.49%
Weighted Average Receive Rate | 5.32% | 5.34%
Weighted Average Maturity in Years | 4 years | 4 years 3 months 18 days
Interest rate swaps - AFS securities |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Weighted Average Pay Rate | 5.32% | 5.34%
Weighted Average Receive Rate | 3.73% | 3.73%
Weighted Average Maturity in Years | 6 months | 8 months 12 days
Interest rate swaps - commercial loans |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Weighted Average Pay Rate | 4.12% | 4.12%
Weighted Average Receive Rate | 5.32% | 5.34%
Weighted Average Maturity in Years | 3 years 4 months 24 days | 3 years 8 months 12 days

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