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Cash and Investments - Narrative (Details)
Jun. 30, 2023
USD ($)
bond
investment
Dec. 30, 2022
USD ($)
investment
bond
Debt Securities, Available-for-sale [Line Items]    
Restrictions on cash, cash equivalents and investments $ 0  
Interest receivable $ 11,400,000 $ 7,300,000
Number of investments in an unrealized loss position | investment 330 285
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer $ 325,500,000 $ 237,600,000
Accumulated loss 7,100,000 6,100,000
Allowance for credit losses $ 0  
Certificates of deposit    
Debt Securities, Available-for-sale [Line Items]    
Restrictions on cash, cash equivalents and investments   $ 1,500,000
Corporate bonds    
Debt Securities, Available-for-sale [Line Items]    
Number of investments in an unrealized loss position more than 12 months or longer | bond 97 81