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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Total Loans (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 2,992,791	$ 2,902,690
Allowance for credit losses	28,011	25,860	$ 27,362	$ 25,018	$ 23,756	$ 22,718
Net loans	2,964,780	2,876,830
Accrued interest receivable for loans	11,000	10,700
Tax exempt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	44,247	42,879
Allowance for credit losses	96	93	101	94	105	86
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	88,064	90,865
Allowance for credit losses	765	811	768	791	865	814
Total commercial loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	147,423	117,577
Allowance for credit losses	3,677	2,579	3,377	1,223	1,010	2,111
Total commercial real estate | Commercial real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	282,717	244,814
Allowance for credit losses	2,485	2,189	2,566	2,861	2,722	2,751
Total commercial real estate | Commercial real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,168,877	1,146,674
Allowance for credit losses	9,553	9,341	9,481	7,971	7,361	5,650
Total commercial and industrial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	306,279	297,112
Allowance for credit losses	4,205	3,493	3,613	5,122	4,820	5,369
Total residential real estate | Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	947,339	954,968
Allowance for credit losses	7,146	7,274	7,376	6,886	6,806	5,862
Total consumer | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	7,845	7,801
Allowance for credit losses	$ 84	$ 80	$ 80	$ 70	$ 67	$ 75

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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