FAIR VALUE - Estimated fair values of the Company's financial instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financial assets - Carrying Amount
Cash and due from banks	$ 2,071	$ 2,111
Interest-bearing deposits in other financial institutions	65,459	56,434
Federal funds sold	1,310	3,636
Investment securities available for sale, at fair value	147,371	155,927
Investments in restricted stock	1,074	1,062
Ground rents	130	131
Loans, less allowance for credit losses	201,872	207,922
Accrued interest receivable	1,124	1,085
Cash value of life insurance	8,375	8,338
Financial liabilities - Carrying Amount
Deposits	387,774	383,247
Long-term borrowings	10,000	10,000
Short-term borrowings	10,000	10,000
Accrued interest payable	17	11
Unrecognized financial instruments:
Commitments to extend credit	28,075	28,167
Standby letters of credit	45	55
Financial assets - Fair Value
Cash and due from banks	2,071	2,111
Interest-bearing deposits in other financial institutions	65,459	56,434
Federal funds sold	1,310	3,636
Investment securities available for sale, at fair value	147,371	155,927
Investments in restricted stock	1,074	1,062
Ground rents	130	131
Loans, less allowance for credit losses	201,975	211,541
Accrued interest receivable	1,124	1,085
Cash value of life insurance	8,375	8,338
Financial liabilities - Fair Value
Deposits	387,250	383,910
Long-term borrowings	9,930	9,888
Short-term borrowings	9,759	10,000
Accrued interest payable	17	11
Unrecognized financial instruments:
Commitments to extend credit	28,075	28,167
Standby letters of credit	$ 45	$ 55