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SECURITIES - Schedule of Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]    
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value $ 435,417 $ 520,449
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses (3,494) (13,218)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value 910,018 955,313
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses (99,424) (147,183)
Estimated Fair Value 1,345,435 1,475,762
Unrealized Losses (102,918) (160,401)
U.S. government and agency securities    
Debt Securities, Available-for-sale [Line Items]    
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value 185,275 29,443
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses (180) (576)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value 51,684 122,936
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses (2,203) (5,131)
Estimated Fair Value 236,959 152,379
Unrealized Losses (2,383) (5,707)
Municipal securities    
Debt Securities, Available-for-sale [Line Items]    
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value 6,091 8,512
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses (725) (183)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value 170,400 168,132
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses (21,844) (28,276)
Estimated Fair Value 176,491 176,644
Unrealized Losses (22,569) (28,459)
Agency mortgage-backed pass-through securities    
Debt Securities, Available-for-sale [Line Items]    
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value 157,352 254,169
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses (1,390) (6,861)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value 279,693 265,993
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses (27,987) (38,485)
Estimated Fair Value 437,045 520,162
Unrealized Losses (29,377) (45,346)
Agency collateralized mortgage obligations    
Debt Securities, Available-for-sale [Line Items]    
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value 65,444 216,422
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses (1,006) (4,501)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value 357,857 317,225
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses (42,931) (66,827)
Estimated Fair Value 423,301 533,647
Unrealized Losses (43,937) (71,328)
Corporate bonds and other    
Debt Securities, Available-for-sale [Line Items]    
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value 21,255 11,903
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses (193) (1,097)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value 50,384 81,027
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses (4,459) (8,464)
Estimated Fair Value 71,639 92,930
Unrealized Losses $ (4,652) $ (9,561)