LOAN CREDIT QUALITY AND RELATED ALLOWANCE FOR CREDIT LOSSES - Average Recorded Investment - Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Credit Quality and Related Allowance for Loan Losses
Average Investment in Impaired Loans	$ 12,727	$ 16,495
Interest Income Recognized on an Accrual Basis on Impaired Loans	415	312
Interest Income Recognized on a Cash Basis on Impaired Loans	29	0
Commercial, financial, and agricultural
Credit Quality and Related Allowance for Loan Losses
Average Investment in Impaired Loans	765	1,345
Interest Income Recognized on an Accrual Basis on Impaired Loans	20	13
Interest Income Recognized on a Cash Basis on Impaired Loans	0	0
Real estate mortgage: \| Residential
Credit Quality and Related Allowance for Loan Losses
Average Investment in Impaired Loans	4,676	5,530
Interest Income Recognized on an Accrual Basis on Impaired Loans	192	174
Interest Income Recognized on a Cash Basis on Impaired Loans	3	0
Real estate mortgage: \| Commercial
Credit Quality and Related Allowance for Loan Losses
Average Investment in Impaired Loans	7,233	9,462
Interest Income Recognized on an Accrual Basis on Impaired Loans	201	122
Interest Income Recognized on a Cash Basis on Impaired Loans	26	0
Real estate mortgage: \| Construction
Credit Quality and Related Allowance for Loan Losses
Average Investment in Impaired Loans	34	116
Interest Income Recognized on an Accrual Basis on Impaired Loans	1	2
Interest Income Recognized on a Cash Basis on Impaired Loans	0	0
Consumer automobile loans
Credit Quality and Related Allowance for Loan Losses
Average Investment in Impaired Loans	3	30
Interest Income Recognized on an Accrual Basis on Impaired Loans	1	0
Interest Income Recognized on a Cash Basis on Impaired Loans	0	0
Other consumer installment loans
Credit Quality and Related Allowance for Loan Losses
Average Investment in Impaired Loans	16	12
Interest Income Recognized on an Accrual Basis on Impaired Loans	0	1
Interest Income Recognized on a Cash Basis on Impaired Loans	$ 0	$ 0

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-15

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-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-17

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
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