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Financial Instruments | 3 Months Ended
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Dec. 28, 2024
Fair Value Disclosures [Abstract] |
Financial Instruments | 3. Financial Instruments The carrying values of the Company’s accounts receivable and accounts payable, approximate their fair values due to the short period of time to maturity or repayment. The Company utilizes the following fair value hierarchy to establish priorities of the inputs used to measure fair value: •Level 1: Quoted prices in active markets for identical assets or liabilities. •Level 2: Observable inputs other than quoted market prices included in Level 1, such as quoted prices for similar assets or liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. The following table summarizes cash, cash equivalents and marketable securities by investment category as of December 28, 2024 and September 28, 2024:
|  | December 28, 2024
|  | Amortized Cost |  | Unrealized Gain |  | Unrealized Loss |  | Estimated Fair Value |  | Cash and Cash Equivalents |  | Marketable Securities
Cash |  | $ | 234,980 |  |  | $ | — |  |  | $ | — |  |  | $ | 234,980 |  |  | $ | 234,980 |  |  | $ | — |
Level 1: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | 40,881 |  |  | — |  |  | — |  |  | 40,881 |  |  | 40,881 |  |  | — |
Subtotal |  | 40,881 |  |  | — |  |  | — |  |  | 40,881 |  |  | 40,881 |  |  | — |
Level 2: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | 51,959 |  |  | 50 |  |  | (13) |  |  | 51,996 |  |  | 4,094 |  |  | 47,902 |
Subtotal |  | 51,959 |  |  | 50 |  |  | (13) |  |  | 51,996 |  |  | 4,094 |  |  | 47,902 |
Total |  | $ | 327,820 |  |  | $ | 50 |  |  | $ | (13) |  |  | $ | 327,857 |  |  | $ | 279,955 |  |  | $ | 47,902 |
|  | September 28, 2024
|  | Amortized Cost |  | Unrealized Gain |  | Unrealized Loss |  | Estimated Fair Value |  | Cash and Cash Equivalents |  | Marketable Securities
Cash |  | $ | 144,184 |  |  | $ | — |  |  | $ | — |  |  | $ | 144,184 |  |  | $ | 144,184 |  |  | $ | — |
Level 1: |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | 25,548 |  |  | — |  |  | — |  |  | 25,548 |  |  | 25,548 |  |  | — |
Subtotal |  | 25,548 |  |  | — |  |  | — |  |  | 25,548 |  |  | 25,548 |  |  | — |
Level 2: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | 51,304 |  |  | 122 |  |  | — |  |  | 51,426 |  |  | — |  |  | 51,426 |
Subtotal |  | 51,304 |  |  | 122 |  |  | — |  |  | 51,426 |  |  | — |  |  | 51,426 |
Total |  | $ | 221,036 |  |  | $ | 122 |  |  | $ | — |  |  | $ | 221,158 |  |  | $ | 169,732 |  |  | $ | 51,426 |
Marketable securities As of December 28, 2024, the Company held no securities with original maturities exceeding one year. Realized gains and losses on the sale of securities are recorded in other income (expense), net in the condensed consolidated statements of operations and comprehensive income. There were no realized gains or losses on sales of marketable securities during the three months ended December 28, 2024. The Company does not intend to sell the securities, and it is more-likely-than-not that it will not be required to sell before recovery of their amortized cost basis. Accordingly, an allowance for credit losses was deemed unnecessary for these securities as of December 28, 2024. Accrued interest receivable related to our marketable securities was immaterial as of December 28, 2024. No accrued interest receivables were written off during the three months ended December 28, 2024.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 107 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-107 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 940 -SubTopic 820 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478119/940-820-50-1 + Details
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