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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

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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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Period Type: | instant

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- References No definition available. + Details
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