LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loans by Class Modified as Troubled Debt Restructurings (Details) - Loans Excluding Purchased Loan $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) contract branch	Dec. 31, 2021 USD ($) contract branch
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	24	34
Troubled debt restructurings principal balances	$ 4,622	$ 19,661
Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	39	46
Troubled debt restructurings principal balances	$ 4,128	$ 2,292
Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	388	494
Troubled debt restructurings principal balances	$ 34,396	$ 65,582
Non-Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	63	120
Troubled debt restructurings principal balances	$ 5,774	$ 11,006
Commercial, financial and agricultural
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	3	4
Troubled debt restructurings principal balances	$ 833	$ 401
Commercial, financial and agricultural | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	4
Troubled debt restructurings principal balances	$ 0	$ 35
Commercial, financial and agricultural | Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	7	12
Troubled debt restructurings principal balances	$ 835	$ 1,286
Commercial, financial and agricultural | Non-Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	3	6
Troubled debt restructurings principal balances	$ 743	$ 83
Consumer
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	0	2
Troubled debt restructurings principal balances	$ 0	$ 7
Consumer | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	2	2
Troubled debt restructurings principal balances	$ 2	$ 5
Consumer | Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	3	7
Troubled debt restructurings principal balances	$ 3	$ 16
Consumer | Non-Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	8	17
Troubled debt restructurings principal balances	$ 11	$ 35
Premium finance
Financing Receivable, Modifications [Line Items]
Number of contracts | branch	4	0
Troubled debt restructurings principal balances	$ 171	$ 0
Premium finance | Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | branch	4
Troubled debt restructurings principal balances	$ 171
Premium finance | Non-Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | branch	0
Troubled debt restructurings principal balances	$ 0
Indirect automobile | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	6	19
Troubled debt restructurings principal balances	$ 16	$ 75
Indirect automobile | Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	151	233
Troubled debt restructurings principal balances	$ 533	$ 1,037
Indirect automobile | Non-Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	16	52
Troubled debt restructurings principal balances	$ 55	$ 273
Real estate – construction and development
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	1	0
Troubled debt restructurings principal balances	$ 17	$ 0
Real estate – construction and development | Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	2	4
Troubled debt restructurings principal balances	$ 693	$ 789
Real estate – construction and development | Non-Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	1	1
Troubled debt restructurings principal balances	$ 17	$ 13
Real estate – commercial and farmland
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	4	5
Troubled debt restructurings principal balances	$ 800	$ 16,197
Real estate – commercial and farmland | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	1	0
Troubled debt restructurings principal balances	$ 7	$ 0
Real estate – commercial and farmland | Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	16	25
Troubled debt restructurings principal balances	$ 7,995	$ 35,575
Real estate – commercial and farmland | Non-Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	5	5
Troubled debt restructurings principal balances	$ 767	$ 5,924
Real estate – residential
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	12	23
Troubled debt restructurings principal balances	$ 2,801	$ 3,056
Real estate – residential | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	30	21
Troubled debt restructurings principal balances	$ 4,103	$ 2,177
Real estate – residential | Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	205	213
Troubled debt restructurings principal balances	$ 24,166	$ 26,879
Real estate – residential | Non-Accruing Loans | Financing Receivables, 1 to 29 Days Past Due
Financing Receivable, Modifications [Line Items]
Number of contracts | contract	30	39
Troubled debt restructurings principal balances	$ 4,181	$ 4,678