LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses
Troubled debt restructured loan		$ 2,300,000
Reserves relating to TDR		0
Restructured loan balance in default status		0
Credit quality indicators information	This analysis includes loans to commercial customers with an aggregate loan exposure greater than $500,000 and for lines of credit in excess of $50,000
Aggregate amount of demand deposits reclassified as loan balances	$ 171,000	46,000
Non-accrual loans	44,000,000	49,000,000
Unfunded commitments	56,000,000.0
Unfunded commitments, allowance for credit loss	419,000
Commercial Portfolio Segment | Commercial, Financial and Agricultural
Financing Receivable, Allowance for Credit Losses
Downgrade Of Relationship With Loans	7,200,000
Commercial Portfolio Segment | Commercial, Financial and Agricultural | Special Mention
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Excluding Accrued Interest, Increase (Decrease) From Downgrade	7,200,000
Commercial Portfolio Segment | Construction Loan
Financing Receivable, Allowance for Credit Losses
Downgrade Of Real Estate Construction Loan	4,700,000
Commercial Portfolio Segment | Construction Loan | Special Mention
Financing Receivable, Allowance for Credit Losses
Financing Receivable, Excluding Accrued Interest, Increase (Decrease) From Downgrade	$ 4,700,000
Consumer Portfolio Segment | Mortgage Loan
Financing Receivable, Allowance for Credit Losses
Loan balance in the process of foreclosure		$ 123,000,000
Real Estate Portfolio Segment | Commercial Loan
Financing Receivable, Allowance for Credit Losses
Maximum loan-to-value ratio	80.00%
Loan period for lending, maximum	20 years
Real Estate Portfolio Segment | Mortgage Loan
Financing Receivable, Allowance for Credit Losses
Maximum loan-to-value ratio	80.00%
Loan period for lending, maximum	25 years
Real Estate Portfolio Segment | Home Equity Lines of Credit
Financing Receivable, Allowance for Credit Losses
Maximum loan-to-value ratio	90.00%
Loan period for lending, maximum	20 years
Real Estate Portfolio Segment | Home Equity Installments
Financing Receivable, Allowance for Credit Losses
Maximum loan-to-value ratio	80.00%
Loan period for lending, maximum	15 years