v3.26.3
INVESTMENT SECURITIES (Narrative) (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
security
Sep. 30, 2025
USD ($)
security
Sep. 30, 2026
USD ($)
security
Sep. 30, 2025
USD ($)
security
Dec. 31, 2025
USD ($)
security
Debt Securities, Available-for-Sale [Line Items]          
Amortization of unrealized losses on investment securities transferred to held-to-maturity at fair value     $ 4,973 $ 5,143  
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Accrued interest receivable   Accrued interest receivable    
Available for sale accrued interest receivable $ 5,200   $ 5,200   $ 4,500
Number of AFS securities sold | security 0 5 0 5  
Cost basis of securities sold   $ 1,500   $ 1,500  
Loss on sale of securities   30   30  
Fair Value $ 806,230   $ 806,230   $ 748,212
Number of AFS investment securities in an unrealized loss position | security 229   229   179
Number of HTM investment securities in an unrealized loss position | security 83   83   81
Collateralized Mortgage-Backed Securities | Asset Pledged as Collateral without Right          
Debt Securities, Available-for-Sale [Line Items]          
Fair Value $ 664,600   $ 664,600   $ 736,700
Net unrealized gains on investment securities          
Debt Securities, Available-for-Sale [Line Items]          
Amortization of unrealized losses on investment securities transferred to held-to-maturity at fair value $ (1,756) $ (1,818) $ (4,973) $ (5,143)