Quarterly report pursuant to Section 13 or 15(d)

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

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SECURITIES AND OTHER INVESTMENTS (Schedule of Amortized Cost and Estimated Fair Value of Securities) (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
AFS Securities [Abstract]    
Due in one year or less, Amortized Cost $ 49,287 $ 52,427
Due in one year or less, Estimated Fair Value 49,040 51,936
Due after one year through five years, Amortized Cost 214,039 150,271
Due after one year through five years, Estimated Fair Value 215,657 149,545
Due after five years through ten years, Amortized Cost 322,155 282,309
Due after five years through ten years, Estimated Fair Value 305,664 261,720
Due after ten years, Amortized Cost 2,357,204 2,130,529
Due after ten years, Estimated Fair Value 2,037,821 1,768,060
Total AFS securities 2,942,685 2,615,536
Total AFS securities, Estimated Fair Value 2,608,182 2,231,261
HTM Securities [Abstract]    
Due in one year or less, Carrying Value 4,022 3,065
Due in one year or less, Estimated Fair Value 3,997 3,058
Due after one year through five years, Carrying Value 13,173 34,093
Due after one year through five years, Estimated Fair Value 13,554 34,613
Due after five years through ten years, Carrying Value 103,411 45,919
Due after five years through ten years, Estimated Fair Value 100,798 45,263
Due after ten years, Carrying Value 686,474 754,301
Due after ten years, Estimated Fair Value 658,478 725,140
Total HTM Securities 807,080 837,378
Total HTM securities, Estimated Fair Value $ 776,827 $ 808,074