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Marketable Securities - Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Marketable Securities [Abstract]
Equity securities	$ 5,185	$ 6,509
Available-for-sale securities	181,234
Marketable securities	$ 186,419	$ 205,744
Equity Securities, FV-NI, Fair Value by Fair Value Hierarchy Level	us-gaap:FairValueInputsLevel1Member	us-gaap:FairValueInputsLevel1Member
Bonds [Member]
Marketable Securities [Abstract]
Available-for-sale securities	$ 181,234	$ 154,315
Debt Securities, Available-for-Sale, Fair Value by Fair Value Hierarchy Level	us-gaap:FairValueInputsLevel2Member	us-gaap:FairValueInputsLevel2Member
Commercial Paper [Member]
Marketable Securities [Abstract]
Available-for-sale securities		$ 44,920
Debt Securities, Available-for-Sale, Fair Value by Fair Value Hierarchy Level		us-gaap:FairValueInputsLevel2Member

X

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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+ References

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