Quarterly report pursuant to Section 13 or 15(d)

SECURITIES (Schedule of Amortized Cost and Estimated Fair Value of Securities) (Details)

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SECURITIES (Schedule of Amortized Cost and Estimated Fair Value of Securities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
AFS Securities [Abstract]    
Due in one year or less, Amortized Cost $ 23,826 $ 18,247
Due in one year or less, Estimated Fair Value 23,702 18,317
Due after one year through five years, Amortized Cost 179,752 180,080
Due after one year through five years, Estimated Fair Value 179,192 183,981
Due after five years through ten years, Amortized Cost 344,061 324,615
Due after five years through ten years, Estimated Fair Value 335,913 331,215
Due after ten years, Amortized Cost 2,852,341 2,925,842
Due after ten years, Estimated Fair Value 2,654,473 2,948,137
Total AFS securities 3,399,980 3,448,784
Total AFS securities, Estimated Fair Value 3,193,280 3,481,650
HTM Securities [Abstract]    
Due in one year or less, Carrying Value 5,061 3,034
Due in one year or less, Estimated Fair Value 5,018 3,027
Due after one year through five years, Carrying Value 10,381 5,852
Due after one year through five years, Estimated Fair Value 10,827 6,065
Due after five years through ten years, Carrying Value 15,877 14,019
Due after five years through ten years, Estimated Fair Value 16,537 15,984
Due after ten years, Carrying Value 725,553 605,095
Due after ten years, Estimated Fair Value 727,795 668,698
Total HTM Securities 756,872 628,000
Total HTM securities, Estimated Fair Value $ 760,177 $ 693,774