Income Taxes Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 25, 2021	Dec. 26, 2020
Income Tax Disclosure [Abstract]
Federal statutory rate	21.00%	21.00%
Statutory rate applied to income (loss) from continuing operations before taxes	$ 1,104	$ (2,296)
Plus state income taxes, net of federal tax effect	81	34
Total statutory provision (benefit)	1,185	(2,262)
Nondeductible meals and entertainment	1	30
Executive compensation limitation	37	0
Federal tax credits	(227)	(279)
Reserve for uncertain tax positions	7	7
Change in valuation allowance	(857)	1,236
Stock-based compensation	(18)	141
Other items	(23)	(19)
Income tax provision (benefit)	$ 105	$ (1,146)

Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal and State Statutory Income Tax Rates

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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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 the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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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 reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for award under share-based payment arrangement. Includes, but is not limited to, expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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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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