(9) Income Taxes - Income tax at federal statutory income tax rate of 21 percent (Details) - USD ($)	12 Months Ended
Dec. 26, 2020	Dec. 28, 2019
Income Tax Disclosure [Abstract]
Tax at statutory rate	$ 188,899	$ (125,527)
State tax, net of federal benefit	360	360
Net operating loss and credit carryforwards	33,873	153,204
Valuation allowance	(324,045)	210,836
Other	92,365	(233,417)
Total	$ (8,548)	$ 5,456

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.

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