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INVESTMENT SECURITIES - AFS (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Available-for-Sale Debt Securities    
Amortized Cost $ 888,314 $ 887,884
Gross Unrealized Gains 3,497 5,973
Gross Unrealized Losses (10,890) (9,164)
Total available-for-sale debt securities 880,921 884,693
U.S. Treasury securities and U.S. Government agencies    
Available-for-Sale Debt Securities    
Amortized Cost 269,953 294,940
Gross Unrealized Gains 62 159
Gross Unrealized Losses (2,470) (1,724)
Total available-for-sale debt securities 267,545 293,375
Private label mortgage-backed security    
Available-for-Sale Debt Securities    
Gross Unrealized Gains 1,359 1,439
Total available-for-sale debt securities 1,359 1,439
Mortgage-backed securities - residential    
Available-for-Sale Debt Securities    
Amortized Cost 596,356 570,491
Gross Unrealized Gains 1,913 4,210
Gross Unrealized Losses (8,023) (6,792)
Total available-for-sale debt securities 590,246 567,909
Collateralized mortgage obligations    
Available-for-Sale Debt Securities    
Amortized Cost 17,066 17,528
Gross Unrealized Gains 29 27
Gross Unrealized Losses (397) (648)
Total available-for-sale debt securities 16,698 16,907
Corporate bonds    
Available-for-Sale Debt Securities    
Amortized Cost 1,001 1,001
Total available-for-sale debt securities 1,001 1,001
Trust preferred security    
Available-for-Sale Debt Securities    
Amortized Cost 3,938 3,924
Gross Unrealized Gains 134 138
Total available-for-sale debt securities $ 4,072 $ 4,062