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Commitments, Contingencies, and Concentrations of Credit Risk (Narrative) (Details) - USD ($) | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Bank Standby Letters of credit | $ 13,100,000 | $ 14,100,000
Marketable securities to any one issuer or guarantor, threshold | 2,000,000 |
FDIC-insured, amount | 250,000 |
Bank of America [Member] |  |
Deposits | 28,200,000 |
Federal Home Loan Bank of Atlanta [Member] |  |
Deposits | 8,700,000 |
Federal Reserve Bank [Member] |  |
Deposits | 198,400,000 |
PCBB [Member] |  |
Deposits | 100,000 |
Holders Of Internet-Based CD [Member] |  |
Deposits | $ 6,100,000 |

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