Revenues - (Contract Assets and Liabilities) (Details) $ in Thousands	6 Months Ended
	Jul. 03, 2021 USD ($)
Movement in Contract Assets and Liabilities [Roll Forward]
Contract Asset, beginning balance	$ 3,605
(Decrease)/increase in contract asset	1,051
Contract Asset, ending balance	4,656
Contract Liability, beginning balance	2,873
(Decrease)/increase in contract liability	1,652
Contract Liability, ending balance	$ 4,525