FAIR VALUE - Estimated fair values of the Company's financial instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financial assets - Carrying Amount
Cash and due from banks	$ 4,371	$ 3,195
Interest-bearing deposits	7,117	4,230
Federal funds sold	9	3,197
Investment securities	89,903	94,607
Investments in restricted stock	30	1,230
Ground rents	156	164
Loans, net	268,840	262,574
Accrued interest receivable	1,140	1,134
Cash value of life insurance	9,479	9,328
Financial liabilities - Carrying Amount
Deposits	334,105	333,246
Long-term borrowings		10,000
Short-term borrowings	20,000	10,000
Financial assets - Fair Value
Cash and due from banks	4,371	3,195
Interest-bearing deposits	7,117	4,230
Federal funds sold	9	3,197
Investment securities	89,903	94,607
Investments in restricted stock	30	1,230
Ground rents	156	164
Loans, net	266,254	259,017
Accrued interest receivable	1,140	1,134
Cash value of life insurance	9,479	9,328
Financial liabilities - Fair Value
Deposits	316,619	315,418
Long-term borrowings		10,257
Short-term borrowings	$ 20,917	$ 10,188