Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 25, 2021	Sep. 26, 2020
Robert E Shaw [Member]
Related Party Transaction [Line Items]
Ownership of Common Stock, Percentage	7.60%		7.60%
Voting Interest of Common Stock, Percentage	3.20%		3.20%
Related Party Transaction, Purchases from Related Party	$ 1,258	$ 1,225	$ 3,159	$ 3,494
Related Party Transaction, Purchases from Related Party, Percentage	2.00%	2.30%	1.70%	2.50%
Robert P Rothman [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	$ 75	$ 73	$ 221	$ 216