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
Sep. 30, 2025
Dec. 31, 2024
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities $ 883,786 $ 803,851
Gross Unrealized Gains 1,892 743
Gross Unrealized Losses (37,579) (45,259)
Held-to-maturity Securities, Fair Value 848,099 759,335
US States and Political Subdivisions Debt Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 788,643 697,683
Gross Unrealized Gains 1,788 715
Gross Unrealized Losses (26,349) (31,763)
Held-to-maturity Securities, Fair Value 764,082 666,635
Corporate Bond Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 2,515 3,322
Gross Unrealized Gains 0 0
Gross Unrealized Losses (36) (82)
Held-to-maturity Securities, Fair Value 2,479 3,240
Collateralized Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 92,628 102,846
Commercial Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 41,509 44,709
Gross Unrealized Gains 104 28
Gross Unrealized Losses (6,316) (6,844)
Held-to-maturity Securities, Fair Value 35,297 37,893
Residential Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 51,119 58,137
Gross Unrealized Gains 0 0
Gross Unrealized Losses (4,878) (6,570)
Held-to-maturity Securities, Fair Value 46,241 51,567
Agency Securities [Member] | Commercial Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 29,192 26,787
Gross Unrealized Gains 0 0
Gross Unrealized Losses (5,791) (6,185)
Held-to-maturity Securities, Fair Value 23,401 20,602
Agency Securities [Member] | Residential Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 36,438 37,808
Gross Unrealized Gains 0 0
Gross Unrealized Losses (4,705) (6,288)
Held-to-maturity Securities, Fair Value 31,733 31,520
Non-agency | Commercial Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 12,317 17,922
Gross Unrealized Gains 104 28
Gross Unrealized Losses (525) (659)
Held-to-maturity Securities, Fair Value 11,896 17,291
Non-agency | Residential Mortgage-Backed Securities [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Total HTM Securities 14,681 20,329
Gross Unrealized Gains 0 0
Gross Unrealized Losses (173) (282)
Held-to-maturity Securities, Fair Value $ 14,508 $ 20,047