Quarterly report [Sections 13 or 15(d)]

INVESTMENT SECURITIES (Unrealized Losses on Investment Securities) (Details)

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INVESTMENT SECURITIES (Unrealized Losses on Investment Securities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Available-for-sale securities    
Less Than 12 Months, Fair Value $ 333,957 $ 97,158
Less Than 12 Months, Unrealized Losses 1,952 328
Greater Than 12 Months, Fair Value 209,612 225,632
Greater Than 12 Months, Unrealized Losses 14,385 14,305
Total Fair Value 543,569 322,790
Total Unrealized Losses 16,337 14,633
Held-to-maturity, Debt Securities    
Less Than 12 Months, Fair Value 134,957 33,589
Less Than 12 Months, Unrealized Losses 1,204 98
Greater Than 12 Months, Fair Value 154,685 235,530
Greater Than 12 Months, Unrealized Losses 8,796 8,958
Total Fair Value 289,642 269,119
Total Unrealized Losses 10,000 9,056
U.S. Government Treasury [Member]    
Available-for-sale securities    
Less Than 12 Months, Fair Value 269,603 31,319
Less Than 12 Months, Unrealized Losses 1,583 22
Greater Than 12 Months, Fair Value 8,932 8,902
Greater Than 12 Months, Unrealized Losses 98 149
Total Fair Value 278,535 40,221
Total Unrealized Losses 1,681 171
Held-to-maturity, Debt Securities    
Less Than 12 Months, Fair Value 0 0
Less Than 12 Months, Unrealized Losses 0 0
Greater Than 12 Months, Fair Value 58,453 129,268
Greater Than 12 Months, Unrealized Losses 127 514
Total Fair Value 58,453 129,268
Total Unrealized Losses 127 514
U.S. Government Agency [Member]    
Available-for-sale securities    
Less Than 12 Months, Fair Value 62,428 62,809
Less Than 12 Months, Unrealized Losses 294 182
Greater Than 12 Months, Fair Value 81,269 91,760
Greater Than 12 Months, Unrealized Losses 2,139 2,302
Total Fair Value 143,697 154,569
Total Unrealized Losses 2,433 2,484
States and Political Subdivisions [Member]    
Available-for-sale securities    
Less Than 12 Months, Fair Value 1,909 3,030
Less Than 12 Months, Unrealized Losses 75 124
Greater Than 12 Months, Fair Value 31,659 30,705
Greater Than 12 Months, Unrealized Losses 1,939 1,921
Total Fair Value 33,568 33,735
Total Unrealized Losses 2,014 2,045
Mortgage-Backed Securities [Member]    
Available-for-sale securities    
Less Than 12 Months, Fair Value 17 0
Less Than 12 Months, Unrealized Losses 0 0
Greater Than 12 Months, Fair Value 50,320 51,932
Greater Than 12 Months, Unrealized Losses 7,920 7,697
Total Fair Value 50,337 51,932
Total Unrealized Losses 7,920 7,697
Held-to-maturity, Debt Securities    
Less Than 12 Months, Fair Value 134,957 33,589
Less Than 12 Months, Unrealized Losses 1,204 98
Greater Than 12 Months, Fair Value 96,232 106,262
Greater Than 12 Months, Unrealized Losses 8,669 8,444
Total Fair Value 231,189 139,851
Total Unrealized Losses 9,873 8,542
Corporate Debt Securities [Member]    
Available-for-sale securities    
Less Than 12 Months, Fair Value 0 0
Less Than 12 Months, Unrealized Losses 0 0
Greater Than 12 Months, Fair Value 37,432 42,333
Greater Than 12 Months, Unrealized Losses 2,289 2,236
Total Fair Value 37,432 42,333
Total Unrealized Losses $ 2,289 $ 2,236