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SECURITIES - Available-for-sale Securities With Unrealized Loss Positions (Details) - USD ($)
Dec. 31, 2023
Dec. 31, 2022
Available-for-sale Securities With Unrealized Loss Positions    
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value $ 22,261,000 $ 297,304,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses (133,000) (28,730,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value 371,320,000 184,052,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses (49,431,000) (35,352,000)
Available-for-sale securities with unrealized loss positions, fair value 393,581,000 481,356,000
Available-for-sale securities, with unrealized loss positions, unrealized losses (49,564,000) (64,082,000)
Obligations of the U.S. Treasury    
Available-for-sale Securities With Unrealized Loss Positions    
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value 0 20,192,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses 0 (1,939,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value 11,290,000 11,644,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses (1,035,000) (1,391,000)
Available-for-sale securities with unrealized loss positions, fair value 11,290,000 31,836,000
Available-for-sale securities, with unrealized loss positions, unrealized losses (1,035,000) (3,330,000)
Obligations of U.S. Government agencies    
Available-for-sale Securities With Unrealized Loss Positions    
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value 1,595,000 8,509,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses (9,000) (430,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value 8,351,000 12,921,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses (1,164,000) (2,078,000)
Available-for-sale securities with unrealized loss positions, fair value 9,946,000 21,430,000
Available-for-sale securities, with unrealized loss positions, unrealized losses (1,173,000) (2,508,000)
Bank holding company debt securities    
Available-for-sale Securities With Unrealized Loss Positions    
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value 0 14,248,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses 0 (1,697,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value 23,500,000 11,138,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses (5,452,000) (1,862,000)
Available-for-sale securities with unrealized loss positions, fair value 23,500,000 25,386,000
Available-for-sale securities, with unrealized loss positions, unrealized losses (5,452,000) (3,559,000)
Obligations Of States And Political Subdivisions Tax Exempt    
Available-for-sale Securities With Unrealized Loss Positions    
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value 3,257,000 106,204,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses (24,000) (11,023,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value 96,758,000 15,153,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses (9,552,000) (2,822,000)
Available-for-sale securities with unrealized loss positions, fair value 100,015,000 121,357,000
Available-for-sale securities, with unrealized loss positions, unrealized losses (9,576,000) (13,845,000)
Obligations Of States And Political Subdivisions Taxable    
Available-for-sale Securities With Unrealized Loss Positions    
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value 0 28,901,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses 0 (4,739,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value 49,961,000 27,761,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses (8,609,000) (6,937,000)
Available-for-sale securities with unrealized loss positions, fair value 49,961,000 56,662,000
Available-for-sale securities, with unrealized loss positions, unrealized losses (8,609,000) (11,676,000)
Residential Passthrough Securities    
Available-for-sale Securities With Unrealized Loss Positions    
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value 3,334,000 45,410,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses (27,000) (4,226,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value 84,297,000 54,531,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses (10,157,000) (8,615,000)
Available-for-sale securities with unrealized loss positions, fair value 87,631,000 99,941,000
Available-for-sale securities, with unrealized loss positions, unrealized losses (10,184,000) (12,841,000)
Residential Collateralized Mortgage Obligations    
Available-for-sale Securities With Unrealized Loss Positions    
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value 3,588,000 28,670,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses (2,000) (2,042,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value 32,808,000 11,626,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses (3,748,000) (2,530,000)
Available-for-sale securities with unrealized loss positions, fair value 36,396,000 40,296,000
Available-for-sale securities, with unrealized loss positions, unrealized losses (3,750,000) (4,572,000)
Commercial Mortgage Backed Securities    
Available-for-sale Securities With Unrealized Loss Positions    
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value 2,327,000 40,408,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses (16,000) (2,585,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value 64,355,000 39,278,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses (9,714,000) (9,117,000)
Available-for-sale securities with unrealized loss positions, fair value 66,682,000 79,686,000
Available-for-sale securities, with unrealized loss positions, unrealized losses (9,730,000) (11,702,000)
Private label commercial mortgage-backed securities    
Available-for-sale Securities With Unrealized Loss Positions    
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value 8,160,000 4,762,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses (55,000) (49,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value 0 0
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses 0 0
Available-for-sale securities with unrealized loss positions, fair value 8,160,000 4,762,000
Available-for-sale securities, with unrealized loss positions, unrealized losses $ (55,000) $ (49,000)