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Stock-based Compensation Plans (Narrative) (Details) - shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Oct. 21, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options exercised |  |  |
Number of Options |  | 636 |
Stock Option [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options exercised | 0 | 0 |
1999 Stock Option Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares not granted |  |  | 25,832
Number of Options | 0 |  |
2018 Bank Of The James Financial Group, Inc. Equity Incentive Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of options granted | 0 |  |

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