Annual report [Section 13 and 15(d), not S-K Item 405]

BORROWINGS (Narrative) (Details)

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BORROWINGS (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Subordinated Borrowing [Line Items]      
Remaining available balance for the federal funds lines $ 1,400 $ 597,000  
Maximum collateral dependent line of credit with the FHLB 11,100,000 7,400,000  
Remaining borrowing capacity 25,000 25,000  
Remaining available borrowings from the Federal Reserve Discount Window 2,600,000 3,000,000  
Amount of funds used from the Federal Reserve Discount Window. 0 0  
Long-term debt, early repayments 200,000 0 $ 0
FHLB Secured Line Of Credit      
Subordinated Borrowing [Line Items]      
Maximum collateral dependent line of credit with the FHLB 5,900,000 2,800,000  
Remaining credit availability on collateral dependent line of credit with the FHLB 5,300,000 $ 2,400,000  
Sandy Spring      
Subordinated Borrowing [Line Items]      
Junior subordinated debenture obligations $ 358,000