Fair Value of Financial Instruments - Valuation of financial instruments (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
Fair Value of Financial Instruments
Short-term investments	$ 211,720	$ 692,024
Recurring
Fair Value of Financial Instruments
Cash equivalents	137,195	314,218
Short-term investments	211,720	692,024
Total	348,915	1,006,242
Recurring \| Money market funds
Fair Value of Financial Instruments
Cash equivalents	137,195	310,969
Recurring \| Corporate debt securities
Fair Value of Financial Instruments
Cash equivalents		3,249
Short-term investments	130,047	501,014
Recurring \| Government debt securities
Fair Value of Financial Instruments
Short-term investments	81,673	191,010
Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value of Financial Instruments
Cash equivalents	137,195	310,969
Total	137,195	310,969
Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Money market funds
Fair Value of Financial Instruments
Cash equivalents	137,195	310,969
Recurring \| Significant Other Observable Inputs (Level 2)
Fair Value of Financial Instruments
Cash equivalents		3,249
Short-term investments	211,720	692,024
Total	211,720	695,273
Recurring \| Significant Other Observable Inputs (Level 2) \| Corporate debt securities
Fair Value of Financial Instruments
Cash equivalents		3,249
Short-term investments	130,047	501,014
Recurring \| Significant Other Observable Inputs (Level 2) \| Government debt securities
Fair Value of Financial Instruments
Short-term investments	$ 81,673	$ 191,010

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

No definition available.

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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