Significant Customers (Details) - U.S. Government - USD ($) $ in Millions	3 Months Ended
	Mar. 27, 2022	Mar. 28, 2021
Revenue, Major Customer [Line Items]
Sales to the U.S. Government, amount	$ 139.6	$ 142.2
Government contracts | Revenue
Revenue, Major Customer [Line Items]
Sales to the U.S. Government, percentage of total revenue (percent)	71.00%	73.00%