Quarterly report [Sections 13 or 15(d)]

SECURITIES AND OTHER INVESTMENTS (Schedule of Carrying Value, Gross Unrealized Gains and Losses and Estimated Fair Value of Securities) (Details)

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SECURITIES AND OTHER INVESTMENTS (Schedule of Carrying Value, Gross Unrealized Gains and Losses and Estimated Fair Value of Securities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities $ 870,288 $ 884,216
Gross Unrealized Gains 1,755 4,242
Gross Unrealized Losses (37,211) (31,646)
Held-to-maturity Securities, Fair Value 834,832 856,812
US States and Political Subdivisions Debt Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 781,389 793,162
Gross Unrealized Gains 1,689 4,139
Gross Unrealized Losses (26,266) (20,951)
Held-to-maturity Securities, Fair Value 756,812 776,350
Corporate Bond Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 2,124 2,255
Gross Unrealized Gains 0 0
Gross Unrealized Losses (33) (26)
Held-to-maturity Securities, Fair Value 2,091 2,229
Collateralized Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 86,775 88,799
Commercial Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 39,874 40,777
Gross Unrealized Gains 66 103
Gross Unrealized Losses (6,172) (6,123)
Held-to-maturity Securities, Fair Value 33,768 34,757
Residential Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 46,901 48,022
Gross Unrealized Gains 0 0
Gross Unrealized Losses (4,740) (4,546)
Held-to-maturity Securities, Fair Value 42,161 43,476
Agency Securities [Member] | Commercial Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 28,955 29,074
Gross Unrealized Gains 0 0
Gross Unrealized Losses (5,690) (5,619)
Held-to-maturity Securities, Fair Value 23,265 23,455
Agency Securities [Member] | Residential Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 35,085 35,793
Gross Unrealized Gains 0 0
Gross Unrealized Losses (4,562) (4,397)
Held-to-maturity Securities, Fair Value 30,523 31,396
Non-agency | Commercial Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 10,919 11,703
Gross Unrealized Gains 66 103
Gross Unrealized Losses (482) (504)
Held-to-maturity Securities, Fair Value 10,503 11,302
Non-agency | Residential Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 11,816 12,229
Gross Unrealized Gains 0 0
Gross Unrealized Losses (178) (149)
Held-to-maturity Securities, Fair Value $ 11,638 $ 12,080