Federal and State Income Taxes (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
Dec. 26, 2020	Dec. 28, 2019
Income Tax Disclosure [Abstract]
Income tax expense	$ 103	$ 83
Loss before income taxes	(522)	$ (1,383)
Federal net operating loss carry-forward	31,400
Federal research and development tax credit carryforwards	$ 1,070

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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