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Fair Values of Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2017
Fair Values Of Financial Instruments [Abstract] |
Schedule of estimated fair values of financial instruments |
|  | December 31, 2017 |  | December 31, 2016 |
(dollars in thousands) |  | Carrying |  | Fair |  | Carrying |  | Fair |
|  | Amount |  | Value |  | Amount |  | Value |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and due from banks |  | $ | 2,610 |  | $ | 2,610 |  | $ | 3,195 |  | $ | 3,195 |
Interest-bearing deposits in other financial institutions |  |  | 9,846 |  |  | 9,846 |  |  | 4,230 |  |  | 4,230 |
Federal funds sold |  |  | 149 |  |  | 149 |  |  | 3,197 |  |  | 3,197 |
Investment securities available for sale |  |  | 89,349 |  |  | 89,349 |  |  | 94,606 |  |  | 94,606 |
Investments in restricted stock |  |  | 1,232 |  |  | 1,232 |  |  | 1,230 |  |  | 1,230 |
Ground rents |  |  | 153 |  |  | 153 |  |  | 164 |  |  | 164 |
Loans, less allowance for credit losses |  |  | 269,023 |  |  | 275,819 |  |  | 262,574 |  |  | 260,223 |
Accrued interest receivable |  |  | 1,133 |  |  | 1,133 |  |  | 1,135 |  |  | 1,135 |
Cash value of life insurance |  |  | 8,713 |  |  | 8,713 |  |  | 9,328 |  |  | 9,328 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |
Deposits |  |  | 334,238 |  |  | 324,512 |  |  | 333,246 |  |  | 315,418 |
Long-term borrowings |  |  | — |  |  | — |  |  | 10,000 |  |  | 10,257 |
Short-term borrowings |  |  | 20,000 |  |  | 20,739 |  |  | 10,000 |  |  | 10,188 |
Accrued interest payable |  |  | 101 |  |  | 101 |  |  | 34 |  |  | 34 |
Unrecognized financial instruments: |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments to extend credit |  |  | 19,109 |  |  | 19,109 |  |  | 25,165 |  |  | 25,165 |
Standby letters of credit |  |  | 71 |  |  | 71 |  |  | 48 |  |  | 48 |
Schedule of fair value hierarchy of financial instruments |
(dollars in thousands) |  |  |  |  |  |  |  |  |  |  |  |
|  | Carrying |  | Fair |  |  |  |  |  |  |  |
December 31, 2017 |  | Amount |  | Value |  | Level 1 |  | Level 2 |  | Level 3
Financial instruments - Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 12,605 |  | $ | 12,605 |  | $ | 12,605 |  | — |  | $ | —
Loans receivable, net |  |  | 269,023 |  |  | 275,819 |  |  | — |  | — |  |  | 275,819
Cash value of life insurance |  |  | 8,713 |  |  | 8,713 |  |  | — |  | 8,713 |  |  | —
Financial instruments - Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deposits |  |  | 334,238 |  |  | 324,512 |  |  | 227,585 |  | 96,927 |  |  | —
Long-term debt |  |  | — |  |  | — |  |  | — |  | — |  |  | —
Short-term debt |  |  | 20,000 |  |  | 20,739 |  |  | — |  | 20,739 |  |  | —

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