GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Impairment losses related to goodwill			$ 0
Amortization expense on other intangible assets			11,784,000	$ 11,596,000
First Mortgage
Finite-Lived Intangible Assets [Line Items]
Value of servicing rights	$ 1,500,000		1,500,000		$ 1,700,000
SBA Loans
Finite-Lived Intangible Assets [Line Items]
Value of servicing rights	3,900,000		3,900,000		4,300,000
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Amortization expense on other intangible assets	3,900,000	$ 3,900,000	11,800,000	11,600,000
Impairment of other intangible assets			0		0
Loan servicing rights
Finite-Lived Intangible Assets [Line Items]
Impairment loss	$ 100,000	$ 200,000	$ 200,000	$ 100,000	$ 100,000