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Income Taxes - Summary of Changes in Valuation Allowance (Details) - USD ($) $ in Thousands | 12 Months Ended
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Oct. 02, 2021 | Oct. 03, 2020 | Sep. 28, 2019
Valuation Allowance [Roll Forward] |  |  |
Beginning balance | $ 113,939 | $ 95,088 | $ 72,380
Increase during the period | 49,791 | 18,851 | 22,708
Decrease during the period | (7,752) | 0 | 0
Ending balance | $ 155,978 | $ 113,939 | $ 95,088

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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 -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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