Revenue Recognition Contract with Customer, Asset and Liability (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 27, 2020	Dec. 28, 2019
Revenue Recognition [Abstract]
Contract with Customer, Asset, Net, Current	$ 25,394	$ 22,675
Contract liabilities	81,504	74,511
Contract with Customer, Liability, Noncurrent	11,305	$ 12,870
Contract with Customer, Asset, Reclassified to Receivable	9,500
Contract with Customer, Liability, Revenue Recognized	47,100
Contract with Customer, Liability, Increase for Contract Acquired during the Period	66,500
Capitalized Contract Cost, Impairment Loss	$ 0