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, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 18,994	$ 27,319	$ 18,330	$ 23,931	$ 23,931
Impact of ASU 2016-13 adoption	261,495	248,831	261,495	248,831	252,322	$ 258,847	$ 246,875	$ 242,738
Provision (release) for credit losses	2,232	796	4,118	4,175
Financing Receivable, Allowance for Credit Loss, Writeoff	(430)	(9,340)	(1,690)	(9,366)
Recoveries	171	21	209	56
Ending balance	20,967	18,796	20,967	18,796	18,330
Cash, Securities, and Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,150	375	410	961	961
Provision (release) for credit losses	(13)	26	727	(560)
Financing Receivable, Allowance for Credit Loss, Writeoff			0		0
Ending balance	1,137	401	1,137	401	410
Consumer and Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	158	75	185	124	124
Provision (release) for credit losses	27	62	(23)	16
Financing Receivable, Allowance for Credit Loss, Writeoff		(4)	0	(30)	(50)
Recoveries	1	4	24	27
Ending balance	186	137	186	137	185
Construction and Development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,651	7,596	5,184	7,945	7,945
Provision (release) for credit losses	(1,487)	(2,262)	(3,020)	(2,611)
Financing Receivable, Allowance for Credit Loss, Writeoff			0		0
Ending balance	2,164	5,334	2,164	5,334	5,184
1-4 Family Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	5,544	4,310
Provision (release) for credit losses	254	1,014
Financing Receivable, Allowance for Credit Loss, Writeoff			0		0
Recoveries	6
Ending balance	5,804	5,325	5,804	5,325
Non-Owner Occupied CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,323	2,203	4,340	2,325	2,325
Provision (release) for credit losses	(384)	2,139	(401)	2,017
Financing Receivable, Allowance for Credit Loss, Writeoff			0		0
Ending balance	3,939	4,342	3,939	4,342	4,340
Owner Occupied CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	737	973	654	1,034	1,034
Provision (release) for credit losses	(12)	(282)	71	(343)
Financing Receivable, Allowance for Credit Loss, Writeoff			0		0
Ending balance	725	691	725	691	654
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,431	11,787	2,357	7,172	7,172
Provision (release) for credit losses	3,847	99	6,173	4,708
Financing Receivable, Allowance for Credit Loss, Writeoff	(430)	(9,336)	(1,690)	(9,336)	(9,352)
Recoveries	164	16		22
Ending balance	7,012	2,566	7,012	2,566	2,357
1-4 Family Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			5,200	4,370	4,370
Provision (release) for credit losses			591	948
Recoveries		$ 1	13	$ 7
Ending balance	$ 5,804		5,804		$ 5,200
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Recoveries			$ 172