GOODWILL AND INTANGIBLE ASSETS - Schedule of Acquired Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 178,829	$ 191,569
Accumulated Amortization	90,880	85,375
Core deposit premiums
Finite-Lived Intangible Assets [Line Items]
Gross Amount	86,454	99,032
Accumulated Amortization	59,045	63,518
Referral relationships
Finite-Lived Intangible Assets [Line Items]
Gross Amount	88,651	88,651
Accumulated Amortization	29,790	20,367
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross Amount	2,734	2,734
Accumulated Amortization	1,581	1,096
Patent
Finite-Lived Intangible Assets [Line Items]
Gross Amount	420	420
Accumulated Amortization	84	42
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Amount	570	732
Accumulated Amortization	$ 380	$ 352