Annual report pursuant to Section 13 and 15(d)

Income Taxes (Difference Between Provision for Income Taxes and Income Taxes Computed Using Federal Income Tax Rate) (Details)

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Income Taxes (Difference Between Provision for Income Taxes and Income Taxes Computed Using Federal Income Tax Rate) (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Taxes [Abstract]    
Computed expected tax expense $ (613,000) $ (1,853,000)
State taxes, net of federal benefit (141,000) (581,000)
Expiration of NOL carryforwards 44,000 44,000
Other 142,000 64,000
Change in valuation allowance 568,000 2,326,000
Total