Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands |
Dec. 27, 2025 |
Dec. 28, 2024 |
|---|---|---|
| Deferred tax assets: | ||
| Operating loss carryforward | $ 72,491 | $ 65,734 |
| Tax credit carryforwards | 5,320 | 5,434 |
| Capitalized research and development expenses | 2,656 | 3,825 |
| Reserves and allowances | 182 | 437 |
| Foreign operating loss carryforward | 536 | 614 |
| Stock-based compensation | 558 | 621 |
| Other | 291 | 854 |
| Total deferred tax assets | 82,034 | 77,519 |
| Deferred tax liabilities: | ||
| Operating lease right-of-use assets | (120) | (245) |
| Prepaid expenses | (42) | (47) |
| Depreciation and amortization | (86) | (82) |
| Total deferred tax liabilities | (248) | (374) |
| Net deferred tax assets | 81,786 | 77,145 |
| Valuation allowance | $ (81,786) | $ (77,145) |
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from capitalized research and development costs. No definition available.
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- Definition Deferred Tax Assets Liabilities Gross No definition available.
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- Definition Deferred Tax Liabilities Operating Lease Right Of Use Assets No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from estimated returns and sales allowances. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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