LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Summary of loans (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Jan. 01, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 2,530,459			$ 2,469,413
Allowance for credit losses: loans	(23,175)	$ (22,044)	$ (20,653)	(17,183)	$ (16,081)	$ (14,357)	$ (13,732)
Loans accounted for under the fair value option	15,464			23,321
Total, net	2,507,284			2,452,230
Amortized Cost
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,491,820			2,428,909
Allowance for credit losses: loans	(23,175)			(17,183)
Loans accounted for under the fair value option	15,464			23,321
Total, net	2,507,284			2,452,230
Total | Amortized Cost
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,514,995			2,446,092
Cash, Securities, and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	148,618			165,559
Allowance for credit losses: loans	(1,126)	(1,311)		(1,198)	(1,097)	(1,194)	(1,598)
Cash, Securities, and Other | Amortized Cost
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	148,618			165,559
Consumer and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	38,928			49,391
Allowance for credit losses: loans	(114)	(137)		(191)	(197)	(220)	(266)
Loans accounted for under the fair value option	16,100			23,400
Consumer and Other | Amortized Cost
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	23,464			26,070
Construction and Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	347,053			285,627
Allowance for credit losses: loans	(7,901)	(7,496)		(2,025)	(1,570)	(1,074)	(1,092)
Construction and Development | Amortized Cost
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	347,053			285,627
1-4 Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	915,011			899,722
Allowance for credit losses: loans	(3,620)	(3,579)		(6,309)	(5,669)	(4,845)	(3,553)
1-4 Family Residential | Amortized Cost
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	915,011			899,722
Non-Owner Occupied CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	523,910			493,134
Allowance for credit losses: loans	(2,255)	(2,495)		(3,490)	(3,637)	(3,235)	(2,952)
Non-Owner Occupied CRE | Amortized Cost
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	523,910			493,134
Owner Occupied CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	206,958			214,189
Allowance for credit losses: loans	(1,010)	(1,182)		(1,510)	(1,508)	(1,477)	(1,292)
Owner Occupied CRE | Amortized Cost
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	206,958			214,189
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	349,981			361,791
Allowance for credit losses: loans	(7,149)	$ (5,844)		(2,460)	$ (2,403)	$ (2,312)	$ (2,979)
Commercial and Industrial | Amortized Cost
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 349,981			$ 361,791