Fair Value of Financial Instruments - Summary of financial instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jan. 01, 2022
Fair Value of Financial Instruments
Short-term investments	$ 692,024	$ 964,582
Recurring
Fair Value of Financial Instruments
Cash equivalents	314,218	852,242
Short-term investments	692,024	964,582
Other assets, net		4,980
Total	1,006,242	1,821,804
Recurring \| Money market funds
Fair Value of Financial Instruments
Cash equivalents	310,969	845,740
Recurring \| Corporate debt securities
Fair Value of Financial Instruments
Cash equivalents	3,249	3,552
Short-term investments	501,014	773,461
Recurring \| Government debt securities
Fair Value of Financial Instruments
Cash equivalents		2,950
Short-term investments	191,010	191,121
Recurring \| Auction rate securities
Fair Value of Financial Instruments
Other assets, net		4,980
Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value of Financial Instruments
Cash equivalents	310,969	845,740
Short-term investments		71,509
Total	310,969	917,249
Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Money market funds
Fair Value of Financial Instruments
Cash equivalents	310,969	845,740
Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Government debt securities
Fair Value of Financial Instruments
Short-term investments		71,509
Recurring \| Significant Other Observable Inputs (Level 2)
Fair Value of Financial Instruments
Cash equivalents	3,249	6,502
Short-term investments	692,024	893,073
Total	695,273	899,575
Recurring \| Significant Other Observable Inputs (Level 2) \| Corporate debt securities
Fair Value of Financial Instruments
Cash equivalents	3,249	3,552
Short-term investments	501,014	773,461
Recurring \| Significant Other Observable Inputs (Level 2) \| Government debt securities
Fair Value of Financial Instruments
Cash equivalents		2,950
Short-term investments	$ 191,010	119,612
Recurring \| Significant Unobservable Inputs (Level 3)
Fair Value of Financial Instruments
Other assets, net		4,980
Total		4,980
Recurring \| Significant Unobservable Inputs (Level 3) \| Auction rate securities
Fair Value of Financial Instruments
Other assets, net		$ 4,980

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.

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

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