FAIR VALUE - Estimated fair values of the Company's financial instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financial assets - Carrying Amount
Cash and due from banks	$ 5,282	$ 2,610
Interest-bearing deposits	10,208	9,846
Federal funds sold	327	149
Debt securities	84,029	89,349
Investments in restricted stock	2,073	1,232
Ground rents	146	153
Loans, net	292,526	269,023
Accrued interest receivable	1,233	1,133
Cash value of life insurance	7,818	8,713
Financial liabilities - Carrying Amount
Deposits	336,847	334,238
Short-term borrowings	40,000	20,000
Accrued interest payable	149	101
Unrecognized financial instruments:
Commitments to extend credit	31,401	19,109
Standby letters of credit	1,025	71
Financial assets - Fair Value
Cash and due from banks	5,282	2,610
Interest-bearing deposits	10,208	9,846
Federal funds sold	327	149
Investment securities	84,029	89,349
Investments in restricted stock	2,073	1,232
Ground rents	146	153
Loans, less allowance for credit losses	294,316	275,819
Accrued interest receivable	1,233	1,133
Cash value of life insurance	7,818	8,713
Financial liabilities - Fair Value
Deposits	314,413	324,512
Short-term borrowings	39,957	20,739
Accrued interest payable	149	101
Unrecognized financial instruments:
Commitments to extend credit	31,401	19,109
Standby letters of credit	$ 1,025	$ 71