Marketable Securities - SERP Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jun. 25, 2022	Jul. 01, 2023	Jun. 25, 2022
Net Investment Income [Line Items]
Investment Income (Loss) and Interest Expense	$ 2,508	$ (1,030)	$ 6,306	$ (1,910)
Supplemental Employee Retirement Plan [Member]
Net Investment Income [Line Items]
Investment Income (Loss) and Interest Expense	$ 915,000	$ 2,100	$ 2,200	$ 3,600