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Income Taxes (Reconciliation Of Gross Unrecognized Tax Benefits) (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |
Gross unrecognized tax benefits at January 1 | $ 231,339 | $ 223,455
Increases in tax positions for prior years | 7,138 | 4,467
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | (199,107) | (328)
Increases in tax positions for current year | 1,613 | 3,745
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | (17,255) | 0
Gross unrecognized tax benefits at December 31 | $ 23,728 | $ 231,339

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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period 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 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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