BUSINESS COMBINATIONS - Narrative (Details) - USD ($) $ in Thousands					3 Months Ended	12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jan. 01, 2023	Aug. 01, 2022	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
BUSINESS COMBINATIONS
Finite-lived intangible asset, useful life						10 years
Goodwill	$ 272,520				$ 272,520	$ 272,520	$ 272,520	$ 180,254	$ 156,663
Provision for credit losses						$ 3,790	14,500	5,605
Heritage Southeast Bank
BUSINESS COMBINATIONS
Entity shares issued per acquiree share (in shares)			0.965
Consideration paid	221,538		$ 221,538
Business acquisition, equity interest issued or issuable (in shares)			6,920,422
Cash received in lieu of fractional shares			$ 16
Goodwill	91,925		91,445		91,925		91,925
Provision for credit losses			3,200
Core deposit intangible	$ 43,739		43,739		43,739		43,739
Business combination, acquisition related costs					388		4,900
Heritage Southeast Bank | Core deposit intangibles
BUSINESS COMBINATIONS
Core deposit intangible			$ 43,700
Acquired finite-lived intangible assets, weighted average useful life			10 years
Beach Bancorp
BUSINESS COMBINATIONS
Entity shares issued per acquiree share (in shares)				0.1711
Consideration paid		$ 101,470		$ 101,470
Business acquisition, equity interest issued or issuable (in shares)				3,498,936
Cash received in lieu of fractional shares				$ 1
Goodwill		23,653		21,822
Provision for credit losses				1,300				$ 3,900
Core deposit intangible		$ 9,791		$ 9,791
Business combination, acquisition related costs					$ 4		$ 1,400
Assumed options, additional shares (in shares)				310,427
Beach Bancorp | Core deposit intangibles
BUSINESS COMBINATIONS
Acquired finite-lived intangible assets, weighted average useful life				10 years