Business Overview and Basis of Presentation (Policies)	9 Months Ended
Business Overview and Basis of Presentation (Policies)	Jun. 29, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of presentation and preparation	The accompanying condensed consolidated financial statements are unaudited. The condensed consolidated balance sheet as of September 30, 2023, has been derived from the audited consolidated financial statements of the Company. The accompanying condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP") for interim financial information and the applicable rules and regulations of the Securities and Exchange Commission ("SEC"). Accordingly, they do not include all the information and footnotes required by U.S. GAAP for annual financial statements. They should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2023, (the "Annual Report"), filed with the SEC on November 20, 2023. In management’s opinion, the accompanying unaudited condensed consolidated financial statements include all adjustments, consisting of only normal recurring adjustments, necessary for the fair statement of the Company’s financial position, its results of operations, and its cash flows for the interim periods presented. The results of operations for the three and nine months ended June 29, 2024, are not necessarily indicative of the results to be expected for the full fiscal year or any other period. The Company operates on a 52- week or 53- week fiscal year ending on the Saturday nearest September 30 each year. The Company’s fiscal year is divided into four quarters of 13 weeks, each beginning on a Sunday and containing two 4-week periods followed by a 5-week period. An additional week is included in the fourth fiscal quarter approximately every five years to realign fiscal quarters with calendar quarters. This last occurred in the fourth quarter of the Company’s fiscal year ended October 3, 2020, and will reoccur in the fiscal year ending October 3, 2026. The nine months ended June 29, 2024 and July 1, 2023, spanned 39 weeks each. As used in this Quarterly Report on Form 10-Q, "fiscal 2024" refers to the fiscal year ending September 28, 2024, "fiscal 2023" refers to the fiscal year ended September 30, 2023, "fiscal 2022" refers to the fiscal year ended October 1, 2022, "fiscal 2021" refers to the fiscal year ended October 2, 2021, and "fiscal 2020" refers to the fiscal year ended October 3, 2020.
Use of estimates and judgments	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and judgments that affect the amounts reported and disclosed in the condensed consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. On an ongoing basis, the Company evaluates its estimates and judgments compared to historical experience and expected trends.
Marketable securities	The Company’s marketable securities consist of U.S. Treasury securities. Management determines the appropriate classification of its marketable securities at the time of purchase and reevaluates such determination at each balance sheet date. The Company classifies its marketable securities as available-for-sale and reports them at fair value in the condensed consolidated balance sheets, with unrealized gains and losses recorded in accumulated other comprehensive (income) loss. If securities are sold prior to maturity, the cost of securities sold is based on the specific identification method. Realized gains and losses on the sale of securities are recorded in other income (expense), net in the condensed consolidated statement of operations and comprehensive income (loss). For securities in an unrealized loss position, the Company first assesses whether it intends to sell, or it is more-likely-than-not that it will be required to sell, the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security's amortized cost basis is written down to fair value through earnings. For securities that do not meet the aforementioned criteria, the Company evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, the Company considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security is compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in accumulated other comprehensive loss in the condensed consolidated balance sheets.
Recent accounting pronouncements pending adoption	In December 2023, the Financial Accounting Standards Board ("FASB") issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This update includes amendments that further enhance income tax disclosures, primarily through standardization and disaggregation of rate reconciliation categories and income taxes paid by jurisdiction. The amendments are effective for fiscal years beginning after December 15, 2024, with early adoption permitted, and may be applied either prospectively or retrospectively. The Company is currently evaluating the pronouncement to determine the impact it may have on the Company's condensed consolidated financial statements and related disclosures. In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This standard expands public entities’ segment disclosures by requiring disclosure of significant segment expenses that are regularly provided to the chief operating decision maker and included within each reported measure of segment profit or loss, an amount and description of its composition for other segment items, and interim disclosures of a reportable segment’s profit or loss and assets. All disclosure requirements under ASU 2023-07 are also required for public entities with a single reportable segment. The amendments are effective for fiscal years beginning after December 15, 2023, and for interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments should be applied retrospectively to all prior periods presented in the financial statements. The Company is currently evaluating the pronouncement to determine the impact it may have on the Company's condensed consolidated financial statements and related disclosures.
Fair value of financial instruments, policy	The Company has elected the practical expedient to exclude the applicable accrued interest from both the fair value and the amortized cost basis of its marketable securities for the purpose of identifying and measuring impairment. The Company presents accrued interest receivable related to its marketable securities in prepaid and other current assets, separate from marketable securities, on its condensed consolidated balance sheets. Accrued interest receivable related to our marketable securities was immaterial as of June 29, 2024. The Company's accounting policy is to not measure an allowance for credit losses for accrued interest receivable and to write-off any uncollectible accrued interest receivable as a reversal of interest income in a timely manner, which it considers to be in the period in which it determines the accrued interest will not be collected