v3.26.1
OPERATING SEGMENTS AND RELATED INFORMATION - Schedule of Goodwill and Total Assets of Segments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Segment Reporting [Line Items]    
Goodwill $ 382,363 $ 383,280
Total assets 18,191,867 18,104,736
Operating Segments | Banking    
Segment Reporting [Line Items]    
Goodwill 359,263 360,180
Total assets 17,962,087 17,880,797
Operating Segments | Wealth Management    
Segment Reporting [Line Items]    
Goodwill 14,108 14,108
Total assets 164,648 152,422
Operating Segments | FirsTech    
Segment Reporting [Line Items]    
Goodwill 8,992 8,992
Total assets 44,485 45,373
Other    
Segment Reporting [Line Items]    
Goodwill 0 0
Total assets $ 20,647 $ 26,144