v3.26.3
GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Intangible Asset, Finite-Lived [Line Items]    
Accumulated Amortization $ (105,702) $ (99,529)
Net Intangible Assets 69,987  
Indefinite-lived Intangible Assets [Line Items]    
Gross Intangible Assets 178,589 184,208
Accumulated Amortization (105,702) (99,529)
Net Intangible Assets 72,887 84,679
Trade Names    
Indefinite-lived Intangible Assets [Line Items]    
Indefinite-lived trademark 2,900 2,900
Core deposits    
Intangible Asset, Finite-Lived [Line Items]    
Gross Intangible Assets 98,876 101,511
Accumulated Amortization (72,578) (67,845)
Net Intangible Assets $ 26,298 $ 33,666
Amortization Period 10 years 10 years
Indefinite-lived Intangible Assets [Line Items]    
Accumulated Amortization $ (72,578) $ (67,845)
Client relationships    
Intangible Asset, Finite-Lived [Line Items]    
Gross Intangible Assets 65,329 68,270
Accumulated Amortization (25,257) (24,620)
Net Intangible Assets 40,072 43,650
Indefinite-lived Intangible Assets [Line Items]    
Accumulated Amortization $ (25,257) $ (24,620)
Client relationships | Minimum    
Intangible Asset, Finite-Lived [Line Items]    
Amortization Period 7 years 7 years
Client relationships | Maximum    
Intangible Asset, Finite-Lived [Line Items]    
Amortization Period 15 years 15 years
Loan servicing rights    
Intangible Asset, Finite-Lived [Line Items]    
Gross Intangible Assets $ 11,484 $ 11,527
Accumulated Amortization (7,867) (7,064)
Net Intangible Assets 3,617 4,463
Valuation allowance, impairment loss (600) (400)
Indefinite-lived Intangible Assets [Line Items]    
Accumulated Amortization $ (7,867) $ (7,064)
Loan servicing rights | Minimum    
Intangible Asset, Finite-Lived [Line Items]    
Amortization Period 10 years 10 years
Loan servicing rights | Maximum    
Intangible Asset, Finite-Lived [Line Items]    
Amortization Period 25 years 25 years