Basis of Presentation - COVID-19 Related Government Assistance (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
COVID-19 Related Government Assistance [Line Items]
COVID-19 related government assistance amount	$ 1,749	$ 981	$ 3,375	$ 1,633
Cost of Products Sold
COVID-19 Related Government Assistance [Line Items]
COVID-19 related government assistance amount	1,706	906	3,185	1,457
Selling, General and Administrative Expenses
COVID-19 Related Government Assistance [Line Items]
COVID-19 related government assistance amount	$ 43	$ 75	$ 190	$ 176