Revenue Recognition Contract with Customer, Asset and Liability (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 26, 2020	Dec. 28, 2019
Revenue Recognition [Abstract]
Contract with Customer, Asset, Net, Current	$ 21,345	$ 22,675
Contract liabilities	86,103	74,511
Contract with Customer, Liability, Noncurrent	12,488	$ 12,870
Contract with Customer, Asset, Reclassified to Receivable	13,000
Contract with Customer, Liability, Revenue Recognized	43,800
Contract with Customer, Liability, Increase for Contract Acquired during the Period	70,900
Capitalized Contract Cost, Impairment Loss	$ 0