Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
James Horwich [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction		$ 251
Robert E Shaw [Member]
Related Party Transaction [Line Items]
Ownership of Common Stock, Percentage	7.50%
Voting Interest of Common Stock, Percentage	3.50%
Related Party Transaction, Purchases from Related Party	$ 1,277	$ 1,435
Related Party Transaction, Purchases from Related Party, Percentage	2.10%	2.10%
Robert P Rothman [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction	$ 72	$ 70