Marketable Securities - SERP Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 24, 2022	Sep. 30, 2023	Sep. 24, 2022
Net Investment Income [Line Items]
Investment Income (Loss) and Interest Expense	$ 1,409	$ (1,483)	$ 7,715	$ (3,394)
Supplemental Employee Retirement Plan [Member]
Net Investment Income [Line Items]
Investment Income (Loss) and Interest Expense	$ 774	$ 1,200	$ 1,400	$ 4,800