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Fair Value of Financial Instruments - Estimate Fair Value of Financial Instruments (Details) | Sep. 25, 2022 yr $ / shares | Sep. 26, 2021 yr $ / shares | Sep. 27, 2020 yr $ / shares
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Volatility (Percent) |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Warrants and rights outstanding, measurement input | 0 | 0.43 | 0.84
Risk-free interest rate (Percent) |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Warrants and rights outstanding, measurement input | 0 | 0.0005 | 0.0012
Expected term (Years) |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Warrants and rights outstanding, measurement input | yr | 0 | 0.5 | 1.5
Estimated fair value (Dollars) |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Warrants and rights outstanding, measurement input | $ / shares | 0 | 0.12 | 0.06

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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