v3.26.3
GOODWILL AND INTANGIBLE ASSETS - Schedule of Goodwill and Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Goodwill And Intangible Assets [Line Items]    
Goodwill $ 355,296 $ 355,296
Intangible assets, excluding capitalized software    
Goodwill And Intangible Assets [Line Items]    
Gross Carrying Amount 139,960 139,645
Accumulated Amortization (99,195) (91,757)
Net Carrying Amount 40,765 47,888
Core deposit intangibles    
Goodwill And Intangible Assets [Line Items]    
Gross Carrying Amount 43,578 43,578
Accumulated Amortization (42,615) (41,836)
Net Carrying Amount 963 1,742
Customer relationship intangibles    
Goodwill And Intangible Assets [Line Items]    
Gross Carrying Amount 65,494 65,494
Accumulated Amortization (33,803) (28,776)
Net Carrying Amount 31,691 36,718
Software intangible assets    
Goodwill And Intangible Assets [Line Items]    
Gross Carrying Amount 26,932 26,932
Accumulated Amortization (20,024) (18,461)
Net Carrying Amount 6,908 8,471
Other intangible assets    
Goodwill And Intangible Assets [Line Items]    
Gross Carrying Amount 3,956 3,641
Accumulated Amortization (2,753) (2,684)
Net Carrying Amount $ 1,203 $ 957