LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Information Pertaining to Impaired Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	$ 29,146	$ 52,078
Allowance for Credit Losses	3,636	7,897
Commercial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	2,261	2,613
Allowance for Credit Losses	852	723
Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	289	2,989
Allowance for Credit Losses	0	30
Real estate – construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	304	1,432
Allowance for Credit Losses	0	45
Real estate – commercial and farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	11,466	33,332
Allowance for Credit Losses	795	6,646
Real estate – residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance	14,826	11,712
Allowance for Credit Losses	$ 1,989	$ 453