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INVESTMENT SECURITIES (Amortized Cost and Estimated Fair Value of Investment Securities) (Details) - USD ($) | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Amortized Cost |  |
Due in one year or less | $ 1,759,000 |
Due after one year through five years | 38,487,000 |
Due after five years through ten years | 44,078,000 |
Due after ten years | 135,944,000 |
Amortized Cost | 754,950,000 | $ 801,370,000
Fair Value |  |
Due in one year or less | 1,749,000 |
Due after one year through five years | 35,227,000 |
Due after five years through ten years | 40,442,000 |
Due after ten years | 106,828,000 |
Fair Value | $ 647,210,000 | 671,794,000
Weighted Average Yield |  |
Due in one year or less (in percent) | 3.00% |
Due after one year through five years (in percent) | 2.77% |
Due after five years through ten years (in percent) | 3.10% |
Due after ten years (in percent) | 2.81% |
Weighted Average Yield | 2.48% |
Amortized Cost |  |
Due after ten years | $ 41,959,000 |
Amortized Cost | 632,338,000 | 664,883,000
Fair Value |  |
Due after ten years | 35,253,000 |
Total held-to-maturity investment securities | $ 565,178,000 | 596,780,000
Weighted Average Yield |  |
Due after ten years (in percent) | 2.26% |
Total held-to-maturity investment securities | 1.95% |
Investments | $ 1,387,288,000 |
Investment securities | $ 1,212,388,000 |
Total Investment Securities, Weighted Average Yield | 0.0222 |
Residential - U.S. Government-sponsored enterprises |  |
Amortized Cost |  |
Without single maturity date | $ 441,898,000 |
Amortized Cost | 441,898,000 | 498,989,000
Fair Value |  |
Without single maturity date | 378,386,000 |
Fair Value | $ 378,386,000 | 423,803,000
Weighted Average Yield |  |
Without single maturity date (in percent) | 2.05% |
Amortized Cost |  |
Without single maturity date | $ 590,379,000 |
Amortized Cost | 590,379,000 | 623,043,000
Fair Value |  |
Without single maturity date | 529,925,000 |
Total held-to-maturity investment securities | $ 529,925,000 | 559,667,000
Weighted Average Yield |  |
Without single maturity date (in percent) | 1.92% |
Residential - Non-Government Agencies |  |
Amortized Cost |  |
Without single maturity date | $ 19,322,000 |
Amortized Cost | 19,322,000 | 9,829,000
Fair Value |  |
Without single maturity date | 18,708,000 |
Fair Value | $ 18,708,000 | 8,662,000
Weighted Average Yield |  |
Without single maturity date (in percent) | 4.64% |
Commercial - U.S. Government-sponsored enterprises |  |
Amortized Cost |  |
Without single maturity date | $ 58,318,000 |
Amortized Cost | 58,318,000 | 54,346,000
Fair Value |  |
Without single maturity date | 50,914,000 |
Fair Value | $ 50,914,000 | 46,144,000
Weighted Average Yield |  |
Without single maturity date (in percent) | 2.74% |
Commercial - Non-government agencies |  |
Amortized Cost |  |
Without single maturity date | $ 15,144,000 |
Amortized Cost | 15,144,000 | 1,541,000
Fair Value |  |
Without single maturity date | 14,956,000 |
Fair Value | $ 14,956,000 | $ 1,507,000
Weighted Average Yield |  |
Without single maturity date (in percent) | 5.04% |

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