LOANS - Summary of Loans Classified as Past Due in Excess of Thirty Days or More and Loans Classified as Non-Accrual (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due 30 to 89 Days	$ 5,763,000	$ 2,960,000
Past Due 90 Days or More and Still Accruing	289,000	45,000
Nonaccrual	10,430,000	23,418,000	$ 0
PCD	2,161,000	4,595,000
Total Past Due, Nonaccrual and PCD	18,643,000	31,018,000
Loans held for investment	3,774,157,000	2,959,553,000
Nonaccrual and PCD with No ACL	5,351,000	3,149,000
PPP loans	710,000	41,100,000
Commercial, financial and agriculture
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due 30 to 89 Days	220,000	246,000
Past Due 90 Days or More and Still Accruing	0	0
Nonaccrual	19,000	190,000
PCD	0	0
Total Past Due, Nonaccrual and PCD	239,000	436,000
Loans held for investment	536,192,000	397,516,000
Nonaccrual and PCD with No ACL	0	0
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due 30 to 89 Days	1,984,000	453,000
Past Due 90 Days or More and Still Accruing	0	0
Nonaccrual	7,445,000	19,445,000
PCD	1,129,000	2,082,000
Total Past Due, Nonaccrual and PCD	10,558,000	21,980,000
Loans held for investment	2,135,263,000	1,683,698,000
Nonaccrual and PCD with No ACL	4,560,000	1,661,000
Consumer real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due 30 to 89 Days	3,386,000	2,140,000
Past Due 90 Days or More and Still Accruing	289,000	45,000
Nonaccrual	2,965,000	3,776,000
PCD	1,032,000	2,512,000
Total Past Due, Nonaccrual and PCD	7,672,000	8,473,000
Loans held for investment	1,058,999,000	838,654,000
Nonaccrual and PCD with No ACL	791,000	1,488,000
Consumer installment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due 30 to 89 Days	173,000	121,000
Past Due 90 Days or More and Still Accruing	0	0
Nonaccrual	1,000	7,000
PCD	0	1,000
Total Past Due, Nonaccrual and PCD	174,000	129,000
Loans held for investment	43,703,000	39,685,000
Nonaccrual and PCD with No ACL	$ 0	$ 0