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Income Taxes (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Apr. 17, 2018
Income Tax Disclosure [Line Items] |  |  |
Operating loss carryforwards | $ 6,500,000 | $ 6,900,000 | $ 8,700,000
Federal statutory rate | 21.00% | 21.00% |
Internal Revenue Service (IRS) [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Maximum annual amount of net operating loss carryforward that may be used on a cumulative basis | $ 459,000 |  |
Internal Revenue Service (IRS) [Member] | 2011 Acquisition [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Operating loss carryforwards, expiration date | Dec. 31, 2035 |  |

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