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Income Taxes (Details) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Jun. 29, 2021 | Jun. 30, 2020
Income Tax Examination [Line Items] |  |
Deferred tax assets | $ 0 |
Income tax provision or benefit | $ 0 | $ 0
Effective income tax rate | 0.00% | 0.00%
Reserves for uncertain tax positions | $ 0 |
Accrual for interest and penalties | $ 0 |
Minimum [Member] |  |
Income Tax Examination [Line Items] |  |
Years subject to income tax examination | 2018 |
Maximum [Member] |  |
Income Tax Examination [Line Items] |  |
Years subject to income tax examination | 2021 |

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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319 + Details
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