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Income Taxes (Narrative) (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |  |
State and foreign income tax returns subject to examination period (in years) | 3 years |  |
State and foreign income tax returns subject to examination period maximum (in years) | 5 years |  |
Period amended federal returns remain subject to examination | 1 year |  |
Uncertain tax positions | $ 0 | $ 0 |
Interest and penalties | $ 0 | $ 0 | $ 0

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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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