Marketable Securities - Fair Value (Details) - USD ($) $ in Thousands	Mar. 29, 2025	Dec. 28, 2024
Marketable Securities
Equity securities	$ 6,995	$ 5,930
Available-for-sale securities	162,942
Marketable securities	$ 169,937	$ 191,971
Equity Securities, FV-NI, Fair Value by Fair Value Hierarchy Level	us-gaap:FairValueInputsLevel1Member	us-gaap:FairValueInputsLevel1Member
Corporate and municipal bonds
Marketable Securities
Available-for-sale securities	$ 149,226	$ 167,201
Debt Securities, Available-for-Sale, Fair Value by Fair Value Hierarchy Level	us-gaap:FairValueInputsLevel2Member	us-gaap:FairValueInputsLevel2Member
Commercial Paper
Marketable Securities
Available-for-sale securities	$ 13,716	$ 18,840
Debt Securities, Available-for-Sale, Fair Value by Fair Value Hierarchy Level	us-gaap:FairValueInputsLevel2Member	us-gaap:FairValueInputsLevel2Member