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INVESTMENT SECURITIES (Narrative) (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2026
USD ($)
security
Mar. 31, 2025
USD ($)
security
Dec. 31, 2025
USD ($)
Mar. 31, 2022
USD ($)
EQUITY        
Amortization of unrealized losses on investment securities transferred to held-to-maturity at fair value $ (1,530) $ (1,552)    
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Accrued interest receivable      
Available for sale accrued interest receivable $ 4,900   $ 4,500  
Number of AFS securities sold | security 0 0    
Debt securities available-for-sale, at fair value $ 779,156   748,212  
Collateralized Mortgage-Backed Securities | Asset Pledged as Collateral without Right        
EQUITY        
Debt securities available-for-sale, at fair value 724,400   $ 736,700  
Net unrealized gains on investment securities        
EQUITY        
Amortization of unrealized losses on investment securities transferred to held-to-maturity at fair value 1,530 $ 1,552    
Interest rate swap agreements | Derivative Financial Instruments Designated as Hedging Instruments        
EQUITY        
Notional amount $ 114,600     $ 115,500
Fixed interest rate 2.095%      
Interest rate swap agreements | Derivative Financial Instruments Designated as Hedging Instruments | Derivatives Not in Cash Flow Hedging Relationship        
EQUITY        
Unrealized gain (loss) on interest rate locks $ 418 $ 718