Quarterly report [Sections 13 or 15(d)]

BORROWINGS (Short-Term Borrowings) (Details)

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BORROWINGS (Short-Term Borrowings) (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Borrowings [Abstract]    
Securities sold under agreements to repurchase $ 114,650 $ 75,432
FHLB Advances 650,000 650,000
Total short-term borrowings 764,650 725,432
Average outstanding balance during the period $ 674,386 $ 175,929
Average outstanding balance during the period 3.68% 3.44%
Average interest rate at end of period 3.77% 3.15%