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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
Mar. 29, 2024
Dec. 29, 2023
Fair Value    
In an Unrealized Loss Position Less than 12 Months $ 577,662 $ 419,297
In an Unrealized Loss Position 12 Months or Greater 331,086 443,240
Total 908,748 862,537
Gross Unrealized Losses    
In an Unrealized Loss Position Less than 12 Months (2,766) (1,253)
In an Unrealized Loss Position 12 Months or Greater (4,354) (5,323)
Total (7,120) (6,576)
Corporate bonds    
Fair Value    
In an Unrealized Loss Position Less than 12 Months 358,757 255,958
In an Unrealized Loss Position 12 Months or Greater 215,894 281,837
Total 574,651 537,795
Gross Unrealized Losses    
In an Unrealized Loss Position Less than 12 Months (1,814) (847)
In an Unrealized Loss Position 12 Months or Greater (2,898) (3,430)
Total (4,712) (4,277)
U.S. Treasury and government-sponsored enterprises    
Fair Value    
In an Unrealized Loss Position Less than 12 Months 217,026 163,339
In an Unrealized Loss Position 12 Months or Greater 109,223 155,452
Total 326,249 318,791
Gross Unrealized Losses    
In an Unrealized Loss Position Less than 12 Months (951) (406)
In an Unrealized Loss Position 12 Months or Greater (1,425) (1,844)
Total (2,376) (2,250)
Municipal bonds    
Fair Value    
In an Unrealized Loss Position Less than 12 Months 1,879 0
In an Unrealized Loss Position 12 Months or Greater 5,969 5,951
Total 7,848 5,951
Gross Unrealized Losses    
In an Unrealized Loss Position Less than 12 Months (1) 0
In an Unrealized Loss Position 12 Months or Greater (31) (49)
Total $ (32) $ (49)