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LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Allowance for loan losses by portfolio (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Sep. 30, 2024	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 17,956	$ 24,630	$ 18,330	$ 23,931	$ 23,931
Impact of ASU 2016-13 adoption	258,847	246,875	258,847	246,875		$ 256,555	$ 252,322	$ 245,528	$ 242,738
(Release) provision for credit losses	1,695	2,680	1,887	3,379
Financing Receivable, Allowance for Credit Loss, Writeoff	(667)	(15)	(1,261)	(26)
Recoveries	10	24	38	35
Ending balance	18,994	27,319	18,994	27,319
Cash, Securities, and Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	391	777	410	961	961
(Release) provision for credit losses	759	(402)	740	(586)
Financing Receivable, Allowance for Credit Loss, Writeoff			0		0
Ending balance	1,150	375	1,150	375
Consumer and Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	151	87	185	124	124
(Release) provision for credit losses	5	(15)	(49)	(46)
Financing Receivable, Allowance for Credit Loss, Writeoff		(15)	0	(26)	(50)
Recoveries	2	18	22	23
Ending balance	158	75	158	75
Construction and Development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,299	7,388	5,184	7,945	7,945
(Release) provision for credit losses	(648)	208	(1,533)	(349)
Financing Receivable, Allowance for Credit Loss, Writeoff			0		0
Ending balance	3,651	7,596	3,651	7,596
1-4 Family Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	5,321	4,288
(Release) provision for credit losses	220	21
Financing Receivable, Allowance for Credit Loss, Writeoff			0		0
Recoveries	3
Ending balance	5,544	4,310	5,544	4,310
Non-Owner Occupied CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,310	2,196	4,340	2,325	2,325
(Release) provision for credit losses	13	7	(17)	(122)
Financing Receivable, Allowance for Credit Loss, Writeoff			0		0
Ending balance	4,323	2,203	4,323	2,203
Owner Occupied CRE
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	915	975	654	1,034	1,034
(Release) provision for credit losses	(178)	(2)	83	(61)
Financing Receivable, Allowance for Credit Loss, Writeoff			0		0
Ending balance	737	973	737	973
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	2,569	8,919	2,357	7,172	7,172
(Release) provision for credit losses	1,524	2,863	2,327	4,609
Financing Receivable, Allowance for Credit Loss, Writeoff	(667)		(1,261)		(9,352)
Recoveries	5	5		6
Ending balance	3,431	11,787	3,431	11,787
1-4 Family Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			5,200	4,370	$ 4,370
(Release) provision for credit losses			336	(66)
Recoveries		$ 1	8	$ 6
Ending balance	$ 5,544		5,544
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Recoveries			$ 8