Organization and Significant Accounting Policies - Income Taxes, Additional Information (Details) - USD ($) $ in Thousands |
Sep. 25, 2021 |
Sep. 26, 2020 |
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| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
| Valuation allowances related to net deferred tax assets | $ 7,031 | $ 7,124 |
| X | ||||||||||
- 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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| X | ||||||||||
- References No definition available.
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