Fair Value of Financial Instruments - Unrealized Gains and Losses (Details) - USD ($) $ in Thousands	Dec. 30, 2023	Dec. 31, 2022
Continuous unrealized loss position, Fair Value
Fair value of available-for-sale investments, continuous loss position for less than twelve months	$ 40,704	$ 383,736
Fair value of available-for-sale investments, continuous loss position for twelve months or greater	126,882	285,676
Total fair value of available-for-sale investments, continuous loss position	167,586	669,412
Continuous unrealized loss position, Gross Unrealized Losses
Available-for-sale investments, continuous loss position for less than 12 months, gross unrealized losses	(128)	(5,923)
Available-for-sale investments, continuous loss position for 12 months or greater, gross unrealized losses	(1,307)	(7,631)
Available-for-sale investments, total gross unrealized losses	(1,435)	(13,554)
Corporate debt securities
Continuous unrealized loss position, Fair Value
Fair value of available-for-sale investments, continuous loss position for less than twelve months	12,449	307,085
Fair value of available-for-sale investments, continuous loss position for twelve months or greater	95,760	185,467
Total fair value of available-for-sale investments, continuous loss position	108,209	492,552
Continuous unrealized loss position, Gross Unrealized Losses
Available-for-sale investments, continuous loss position for less than 12 months, gross unrealized losses	(13)	(5,297)
Available-for-sale investments, continuous loss position for 12 months or greater, gross unrealized losses	(867)	(4,090)
Available-for-sale investments, total gross unrealized losses	(880)	(9,387)
Government debt securities
Continuous unrealized loss position, Fair Value
Fair value of available-for-sale investments, continuous loss position for less than twelve months	28,255	76,651
Fair value of available-for-sale investments, continuous loss position for twelve months or greater	31,122	100,209
Total fair value of available-for-sale investments, continuous loss position	59,377	176,860
Continuous unrealized loss position, Gross Unrealized Losses
Available-for-sale investments, continuous loss position for less than 12 months, gross unrealized losses	(115)	(626)
Available-for-sale investments, continuous loss position for 12 months or greater, gross unrealized losses	(440)	(3,541)
Available-for-sale investments, total gross unrealized losses	$ (555)	$ (4,167)