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INVESTMENT SECURITIES - Maturity of Available-for-Sale Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Amortized Cost |  |
Due in one year or less | $ 2,500 | $ 0
Due after one year through five years | 11,166 | 13,986
Due after five years through ten years | 44,977 | 45,549
Due after ten years | 27,988 | 29,118
Total securities with contractual maturities | 86,631 | 88,653
Debt securities, available-for-sale, amortized cost, after allowance for credit loss | 176,564 | 179,744
Estimated Fair Value |  |
Due in one year or less | 2,491 | 0
Due after one year through five years | 10,920 | 13,703
Due after five years through ten years | 39,687 | 39,701
Due after ten years | 27,895 | 28,859
Total securities with contractual maturities | 80,993 | 82,263
Total available for sale securities | 151,672 | 155,743
Mortgage-backed securities |  |
Amortized Cost |  |
Mortgage-backed securities | 89,933 | 91,091
Estimated Fair Value |  |
Mortgage-backed securities | $ 70,679 | $ 73,480

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