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SECURITIES (Schedule of Amortized Cost and Estimated Fair Value of Securities) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
AFS Securities [Abstract] |  |
Due in one year or less, Amortized Cost | $ 31,089 | $ 18,247
Due in one year or less, Estimated Fair Value | 30,799 | 18,317
Due after one year through five years, Amortized Cost | 165,998 | 180,080
Due after one year through five years, Estimated Fair Value | 160,945 | 183,981
Due after five years through ten years, Amortized Cost | 338,619 | 324,615
Due after five years through ten years, Estimated Fair Value | 308,149 | 331,215
Due after ten years, Amortized Cost | 2,689,325 | 2,925,842
Due after ten years, Estimated Fair Value | 2,217,430 | 2,948,137
Total AFS securities | 3,225,031 | 3,448,784
Total AFS securities, Estimated Fair Value | 2,717,323 | 3,481,650
HTM Securities [Abstract] |  |
Due in one year or less, Carrying Value | 25,025 | 3,034
Due in one year or less, Estimated Fair Value | 25,016 | 3,027
Due after one year through five years, Carrying Value | 35,709 | 5,852
Due after one year through five years, Estimated Fair Value | 35,656 | 6,065
Due after five years through ten years, Carrying Value | 15,798 | 14,019
Due after five years through ten years, Estimated Fair Value | 15,587 | 15,984
Due after ten years, Carrying Value | 764,817 | 605,095
Due after ten years, Estimated Fair Value | 689,221 | 668,698
Total HTM Securities | 841,349 | 628,000
Total HTM securities, Estimated Fair Value | $ 765,480 | $ 693,774

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