LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Summary of unpaid principal balance of loans classified as TDRs (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]
Allowance for credit losses: loans	$ 23,175	$ 22,044	$ 20,653	$ 17,183	$ 16,081	$ 14,357	$ 13,732
Cash, Securities, and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses: loans	1,126	1,311		1,198	1,097	1,194	1,598
Consumer and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses: loans	114	137		191	197	220	266
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses: loans	7,149	5,844		2,460	2,403	2,312	2,979
1-4 Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses: loans	3,620	3,579		6,309	5,669	4,845	3,553
Non-Owner Occupied CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses: loans	2,255	2,495		3,490	3,637	3,235	2,952
Owner Occupied CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses: loans	1,010	1,182		1,510	1,508	1,477	1,292
Construction and Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses: loans	$ 7,901	$ 7,496		$ 2,025	$ 1,570	$ 1,074	$ 1,092