FAIR VALUE MEASUREMENT (Carrying Amounts and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financial assets:
Interest bearing deposits with banks	$ 8,352	$ 11,741
Debt securities available for sale	66,639	67,564
Debt securities held to maturity	193,182	198,147
Restricted investment in bank stock	2,018	1,707
Financial liabilities:
Time deposits	538,650	552,018
Short-term borrowings	57,214	52,810
Long-term debt	20,000	20,000
Other interest bearing liabilities	884	951
Carrying Value
Financial assets:
Cash and due from banks	5,085	17,189
Interest bearing deposits with banks	8,352	11,741
Debt securities available for sale	66,639	67,564
Debt securities held to maturity	198,680	200,644
Loans, net of allowance for credit losses	530,924	519,717
Accrued interest receivable	2,621	2,438
Financial liabilities:
Time deposits	198,177	197,387
Securities sold under agreements to repurchase	17,214	12,810
Short-term borrowings	40,000	40,000
Long-term debt	20,000	20,000
Other interest bearing liabilities	884	951
Accrued interest payable	1,809	1,397
Off-balance sheet financial instruments:
Commitments to extend credit	0	0
Letters of credit	0	0
Fair Value
Financial assets:
Cash and due from banks	5,085	17,189
Interest bearing deposits with banks	8,352	11,741
Debt securities available for sale	66,639	67,564
Debt securities held to maturity	193,182	198,147
Loans, net of allowance for credit losses	511,280	500,439
Accrued interest receivable	2,621	2,438
Financial liabilities:
Time deposits	194,800	194,219
Short-term borrowings	39,853	39,868
Long-term debt	19,748	19,638
Other interest bearing liabilities	880	947
Accrued interest payable	1,809	1,397
Off-balance sheet financial instruments:
Commitments to extend credit	0	0
Letters of credit	$ 0	$ 0