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Cash and Investments - Fair Value and Gross Unrealized Losses of Investments Available-for-Sale in an Unrealized Loss Position (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 30, 2022
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Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Fair Value | $ 1,174,963 | $ 1,030,810
Gross Unrealized Losses | (18,549) | (19,034)
Corporate bonds |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Fair Value | 761,913 | 706,711
Gross Unrealized Losses | (12,050) | (13,132)
U.S. Treasury and government-sponsored enterprises |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Fair Value | 404,405 | 308,307
Gross Unrealized Losses | (6,359) | (5,679)
Municipal bonds |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Fair Value | 8,645 | 15,792
Gross Unrealized Losses | $ (140) | $ (223)

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