v3.25.2
GOODWILL AND INTANGIBLE ASSETS (Schedule of Information Concerning Intangible Assets with Finite Life) (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Apr. 01, 2025
Dec. 31, 2024
Apr. 01, 2024
Finite-Lived Intangible Assets [Line Items]        
Goodwill, Gross Carrying Value $ 1,214,053   $ 925,211  
Goodwill 1,710,912   1,214,053  
Gross Carrying Value 1,710,912   1,214,053  
Accumulated Amortization, Goodwill 0   0  
Total estimated amortization expense 351,381      
American National        
Finite-Lived Intangible Assets [Line Items]        
Goodwill     288,842 $ 288,842
Sandy Spring        
Finite-Lived Intangible Assets [Line Items]        
Goodwill 496,859 $ 496,859    
CDIs        
Finite-Lived Intangible Assets [Line Items]        
Gross Carrying Value 159,901   85,491  
Accumulated Amortization (106,502)   (85,768)  
Total estimated amortization expense 296,750   74,133  
CDIs | American National        
Finite-Lived Intangible Assets [Line Items]        
Gross Carrying Value     74,410  
CDIs | Sandy Spring        
Finite-Lived Intangible Assets [Line Items]        
Gross Carrying Value 243,351      
Other amortizable intangibles        
Finite-Lived Intangible Assets [Line Items]        
Gross Carrying Value 14,254   3,977  
Accumulated Amortization (6,922)   (3,824)  
Total estimated amortization expense 54,631   10,430  
Other amortizable intangibles | American National        
Finite-Lived Intangible Assets [Line Items]        
Gross Carrying Value     $ 10,277  
Other amortizable intangibles | Sandy Spring        
Finite-Lived Intangible Assets [Line Items]        
Gross Carrying Value $ 47,299