v3.25.2
SEGMENT REPORTING AND REVENUE (Operating Segment Results) (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
segment
Jun. 30, 2024
USD ($)
Apr. 01, 2025
USD ($)
Dec. 31, 2024
USD ($)
Apr. 01, 2024
USD ($)
Disaggregation of Revenue [Line Items]              
Number of operating segments | segment     2        
Interest and dividend income $ 510,372 $ 320,888 $ 816,208 $ 583,802      
Interest expense 189,001 136,354 310,672 251,444      
Net interest income 321,371 184,534 505,536 332,358      
Provision for credit losses 105,707 21,751 123,345 29,989      
Net interest income after provision for credit losses 215,664 162,783 382,191 302,369      
Noninterest income 81,522 23,812 110,685 49,365      
Noninterest expenses 279,698 150,005 413,882 255,279      
Income (loss) before income taxes 17,488 36,590 78,994 96,455      
LHFI, net of deferred fees and costs 27,328,333   27,328,333     $ 18,470,621  
Goodwill 1,710,912   1,710,912     1,214,053  
Deposits 30,972,175   30,972,175     20,397,619  
Reallocation of LHFS     10,300        
Reallocation of deposits     198,200        
American National              
Disaggregation of Revenue [Line Items]              
Goodwill           288,842 $ 288,842
Sandy Spring              
Disaggregation of Revenue [Line Items]              
Goodwill 496,859   496,859   $ 496,859    
Wholesale Banking | American National              
Disaggregation of Revenue [Line Items]              
Goodwill             210,800
Wholesale Banking | Sandy Spring              
Disaggregation of Revenue [Line Items]              
Goodwill         387,600    
Consumer Banking | American National              
Disaggregation of Revenue [Line Items]              
Goodwill             $ 78,000
Consumer Banking | Sandy Spring              
Disaggregation of Revenue [Line Items]              
Goodwill         $ 109,300    
Operating segments | Wholesale Banking              
Disaggregation of Revenue [Line Items]              
Interest and dividend income 443,315 314,460 740,302 588,214      
Interest expense 284,936 219,512 482,583 412,392      
Net interest income 158,379 94,948 257,719 175,822      
Provision for credit losses 80,022 20,221 95,067 25,587      
Net interest income after provision for credit losses 78,357 74,727 162,652 150,235      
Noninterest income 23,652 10,777 35,451 19,140      
Noninterest expenses 84,593 48,450 139,805 92,405      
Income (loss) before income taxes 17,416 37,054 58,298 76,970      
LHFI, net of deferred fees and costs 22,889,472   22,889,472     15,514,640  
Goodwill 1,237,585   1,237,585     850,035  
Deposits 11,733,733   11,733,733     7,193,403  
Operating segments | Wholesale Banking | American National              
Disaggregation of Revenue [Line Items]              
Goodwill           210,800  
Operating segments | Wholesale Banking | Sandy Spring              
Disaggregation of Revenue [Line Items]              
Goodwill 387,600   387,600        
Operating segments | Consumer Banking              
Disaggregation of Revenue [Line Items]              
Interest and dividend income 248,482 154,739 404,624 290,757      
Interest expense 135,631 78,730 215,990 145,511      
Net interest income 112,851 76,009 188,634 145,246      
Provision for credit losses 25,685 1,539 28,278 4,411      
Net interest income after provision for credit losses 87,166 74,470 160,356 140,835      
Noninterest income 19,661 15,254 34,295 27,869      
Noninterest expenses 98,515 65,099 166,082 120,978      
Income (loss) before income taxes 8,312 24,625 28,569 47,726      
LHFI, net of deferred fees and costs 5,228,222   5,228,222     3,085,207  
Goodwill 473,327   473,327     364,018  
Deposits 17,908,932   17,908,932     11,899,197  
Operating segments | Consumer Banking | American National              
Disaggregation of Revenue [Line Items]              
Goodwill           78,000  
Operating segments | Consumer Banking | Sandy Spring              
Disaggregation of Revenue [Line Items]              
Goodwill 109,300   109,300        
Corporate Other              
Disaggregation of Revenue [Line Items]              
Interest and dividend income (181,425) (148,311) (328,718) (295,169)      
Interest expense (231,566) (161,888) (387,901) (306,459)      
Net interest income 50,141 13,577 59,183 11,290      
Provision for credit losses 0 (9) 0 (9)      
Net interest income after provision for credit losses 50,141 13,586 59,183 11,299      
Noninterest income 38,209 (2,219) 40,939 2,356      
Noninterest expenses 96,590 36,456 107,995 41,896      
Income (loss) before income taxes (8,240) $ (25,089) (7,873) $ (28,241)      
LHFI, net of deferred fees and costs (789,361)   (789,361)     (129,226)  
Goodwill 0   0     0  
Deposits $ 1,329,510   $ 1,329,510     $ 1,305,019