Income Taxes (Reconciliation of Income Taxes by Applying the Statutory Federal Income Tax Rate) (Details) |
12 Months Ended | |
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Dec. 27, 2025 |
Dec. 28, 2024 |
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| Income Taxes | ||
| Statutory federal income tax rate (as a percent) | 21.00% | 21.00% |
| Excess tax benefits from equity awards (as a percent) | 2.00% | 1.00% |
| Change in valuation allowance (as a percent) | 19.00% | 20.00% |
| Effective tax rate (as a percent) | ||
| X | ||||||||||
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Percentage 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 changes in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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