Quarterly report [Sections 13 or 15(d)]

LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Schedule for Allowance for Loan Loss Activity, by Portfolio Segment, Balances for Allowance for Credit Losses, and Loans Based on Impairment Methodology) (Details)

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LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Schedule for Allowance for Loan Loss Activity, by Portfolio Segment, Balances for Allowance for Credit Losses, and Loans Based on Impairment Methodology) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Allowance for loan losses:        
Balance, beginning of period $ 291,100 $ 193,796 $ 295,108 $ 178,644
Loans charged off (3,313) (2,579) (6,214) (5,464)
Recoveries credited to allowance 1,327 1,913 2,634 2,520
Provision (release) charged to operations 9,642 4,641 7,228 22,071
Balance, end of period 298,756 315,574 298,756 315,574
CRE        
Allowance for loan losses:        
Balance, beginning of period 171,900   152,477  
Loans charged off (908)   (908)  
Recoveries credited to allowance 344   711  
Provision (release) charged to operations 2,425   21,481  
Balance, end of period 173,761   173,761  
Commercial and Industrial        
Allowance for loan losses:        
Balance, beginning of period 58,697   80,336  
Loans charged off (1,650)   (3,848)  
Recoveries credited to allowance 534   1,075  
Provision (release) charged to operations 2,911   (17,071)  
Balance, end of period 60,492   60,492  
Commercial        
Allowance for loan losses:        
Balance, beginning of period   162,908   148,887
Loans charged off   (1,534)   (3,382)
Recoveries credited to allowance   1,545   1,775
Provision (release) charged to operations   8,489   24,128
Balance, end of period   257,403   257,403
Consumer        
Allowance for loan losses:        
Balance, beginning of period 60,503 30,888 62,295 29,757
Loans charged off (755) (1,045) (1,458) (2,082)
Recoveries credited to allowance 449 368 848 745
Provision (release) charged to operations 4,306 (3,848) 2,818 (2,057)
Balance, end of period $ 64,503 58,171 64,503 58,171
Sandy Spring        
Allowance for loan losses:        
Initial ACL recognized charge offs before acquisition   34,500 $ 39,500 34,500
Sandy Spring | PCD Loans        
Allowance for loan losses:        
Initial allowance - PCD loans   28,265   28,265
Sandy Spring | Non-PCD Loans        
Allowance for loan losses:        
Initial provision - non-PCD loans   89,538   89,538
Sandy Spring | Commercial | PCD Loans        
Allowance for loan losses:        
Initial allowance - PCD loans   21,255   21,255
Sandy Spring | Commercial | Non-PCD Loans        
Allowance for loan losses:        
Initial provision - non-PCD loans   64,740   64,740
Sandy Spring | Consumer | PCD Loans        
Allowance for loan losses:        
Initial allowance - PCD loans   7,010   7,010
Sandy Spring | Consumer | Non-PCD Loans        
Allowance for loan losses:        
Initial provision - non-PCD loans   $ 24,798   $ 24,798