GOODWILL AND INTANGIBLE ASSETS - Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets		$ 194,144
Accumulated Amortization	$ (90,488)	(75,482)
Net Intangible Assets	99,363	118,662
Indefinite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	192,751
Accumulated Amortization	(90,488)	$ (75,482)
Net Intangible Assets	$ 102,263
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest expenses	Noninterest expenses
Trade Names
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived trademark	$ 2,900	$ 2,900
Core deposits
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	104,751	104,751
Accumulated Amortization	(60,999)	(50,754)
Net Intangible Assets	$ 43,752	$ 53,997
Amortization Period	10 years	10 years
Indefinite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (60,999)	$ (50,754)
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	73,880	73,880
Accumulated Amortization	(23,588)	(18,153)
Net Intangible Assets	50,292	55,727
Indefinite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (23,588)	$ (18,153)
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	7 years	7 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	15 years	15 years
Loan servicing rights
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 11,220	$ 12,613
Accumulated Amortization	(5,901)	(6,575)
Net Intangible Assets	5,319	6,038
Impairment losses	600	100
Indefinite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (5,901)	$ (6,575)
Loan servicing rights | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years	10 years
Loan servicing rights | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Period	25 years	25 years