Annual report pursuant to Section 13 and 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
Dec. 31, 2021
Dec. 31, 2020
AFS Securities [Abstract]    
Due in one year or less, Amortized Cost $ 18,247 $ 19,875
Due in one year or less, Estimated Fair Value 18,317 19,997
Due after one year through five years, Amortized Cost 180,080 161,448
Due after one year through five years, Estimated Fair Value 183,981 169,103
Due after five years through ten years, Amortized Cost 324,615 235,021
Due after five years through ten years, Estimated Fair Value 331,215 242,791
Due after ten years, Amortized Cost 2,925,842 2,022,903
Due after ten years, Estimated Fair Value 2,948,137 2,108,528
Total AFS securities 3,448,784 2,439,247
Total AFS securities, Estimated Fair Value 3,481,650 2,540,419
HTM Securities [Abstract]    
Due in one year or less, Carrying Value 3,034 1,443
Due in one year or less, Estimated Fair Value 3,027 1,460
Due after one year through five years, Carrying Value 5,852 8,577
Due after one year through five years, Estimated Fair Value 6,065 8,893
Due after five years through ten years, Carrying Value 14,019 1,744
Due after five years through ten years, Estimated Fair Value 15,984 1,805
Due after ten years, Carrying Value 605,095 533,087
Due after ten years, Estimated Fair Value 668,698 607,607
Total HTM Securities 628,000 544,851
Total HTM securities, Estimated Fair Value $ 693,774 $ 619,765