Quarterly report [Sections 13 or 15(d)]

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

v3.26.1
SECURITIES AND OTHER INVESTMENTS (Schedule of Amortized Cost and Estimated Fair Value of Securities) (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
AFS Securities [Abstract]    
Due in one year or less, Amortized Cost $ 96,625 $ 63,692
Due in one year or less, Estimated Fair Value 96,790 63,993
Due after one year through five years, Amortized Cost 285,478 298,683
Due after one year through five years, Estimated Fair Value 284,536 299,727
Due after five years through ten years, Amortized Cost 432,431 492,242
Due after five years through ten years, Estimated Fair Value 410,204 475,707
Due after ten years, Amortized Cost 3,379,289 3,635,381
Due after ten years, Estimated Fair Value 3,085,187 3,354,874
Total AFS securities 4,193,823 4,489,998
Total AFS securities, Estimated Fair Value 3,876,717 4,194,301
HTM Securities [Abstract]    
Due in one year or less, Carrying Value 10,793 507
Due in one year or less, Estimated Fair Value 10,828 503
Due after one year through five years, Carrying Value 25,892 18,813
Due after one year through five years, Estimated Fair Value 26,307 19,150
Due after five years through ten years, Carrying Value 256,544 222,284
Due after five years through ten years, Estimated Fair Value 248,372 216,095
Due after ten years, Carrying Value 567,677 642,612
Due after ten years, Estimated Fair Value 546,257 621,064
Total HTM Securities 860,906 884,216
Total HTM securities, Estimated Fair Value $ 831,764 $ 856,812