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Income Taxes - Summary of Changes in Valuation Allowance (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2023 | Oct. 01, 2022 | Oct. 02, 2021
Valuation Allowance [Roll Forward] |  |  |
Beginning balance | $ 162,267 | $ 155,978 | $ 113,939
Increase during the period | 23,628 | 13,841 | 49,791
Decrease during the period | (55) | (7,552) | (7,752)
Ending balance | $ 185,840 | $ 162,267 | $ 155,978

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- Definition Deferred Tax Assets, Valuation Allowance [Roll Forward] + References No definition available. + Details
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- Definition Valuation Allowance, Deferred Tax Asset, Decrease, Amount + References No definition available. + Details
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- Definition Valuation Allowance, Deferred Tax Asset, Increase, Amount + References No definition available. + Details
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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 -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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