LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Allowance for loan losses by portfolio (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		$ 27,319	$ 22,044	$ 23,931	$ 17,183	$ 17,183
Impact of ASU 2016-13 adoption		248,831	246,256	248,831	246,256	242,738	$ 246,875	$ 242,242	$ 240,864
(Release) provision for credit losses		796	1,321	4,175	2,725
Financing Receivable, Allowance for Credit Loss, Writeoff		(9,340)	(198)	(9,366)	(228)
Recoveries		21	8	56	25
Ending balance		18,796	23,175	18,796	23,175	23,931
Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance					3,470	3,470
Cumulative change in accounting principle
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of ASU 2016-13 adoption	[1]								$ (5,319)
Cash, Securities, and Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		375	1,311	961	1,198	1,198
(Release) provision for credit losses		26	(185)	(560)	(265)
Financing Receivable, Allowance for Credit Loss, Writeoff				0		0
Ending balance		401	1,126	401	1,126	961
Cash, Securities, and Other | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance					193	193
Consumer and Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		75	137	124	191	191
(Release) provision for credit losses		62	(15)	16	(160)
Financing Receivable, Allowance for Credit Loss, Writeoff		(4)	(12)	(30)	(42)	(101)
Recoveries		4	4	27	19
Ending balance		137	114	137	114	124
Consumer and Other | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance					106	106
Construction and Development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		7,596	7,496	7,945	2,025	2,025
(Release) provision for credit losses		(2,262)	405	(2,611)	1,195
Financing Receivable, Allowance for Credit Loss, Writeoff				0		0
Ending balance		5,334	7,901	5,334	7,901	7,945
Construction and Development | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance					4,681	4,681
1-4 Family Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		4,310	3,579
(Release) provision for credit losses		1,014	38
Financing Receivable, Allowance for Credit Loss, Writeoff				0		0
Recoveries		1
Ending balance		5,325	3,620	5,325	3,620
Non-Owner Occupied CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		2,203	2,495	2,325	3,490	3,490
(Release) provision for credit losses		2,139	(240)	2,017	(546)
Financing Receivable, Allowance for Credit Loss, Writeoff				0		0
Ending balance		4,342	2,255	4,342	2,255	2,325
Non-Owner Occupied CRE | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance					(689)	(689)
Owner Occupied CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		973	1,182	1,034	1,510	1,510
(Release) provision for credit losses		(282)	(172)	(343)	(396)
Financing Receivable, Allowance for Credit Loss, Writeoff				0		0
Ending balance		691	1,010	691	1,010	1,034
Owner Occupied CRE | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance					(104)	(104)
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		11,787	5,844	7,172	2,460	2,460
(Release) provision for credit losses		99	1,490	4,708	2,781
Financing Receivable, Allowance for Credit Loss, Writeoff		(9,336)	(186)	(9,336)	(186)	(8,737)
Recoveries		16	1		3
Ending balance		2,566	7,149	2,566	7,149	7,172
Commercial and Industrial | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance					2,091	2,091
1-4 Family Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				4,370	6,309	6,309
(Release) provision for credit losses				948	116
Recoveries			$ 3	7	3
Ending balance		$ 5,325		5,325		4,370
1-4 Family Residential | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance					$ (2,808)	$ (2,808)
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Recoveries				$ 22

[1] Refer to Note 1 – Organization and Summary of Significant Accounting Policies for further information.