Segment Information and Enterprise Reporting - Analysis of Product Revenues Based upon Geographic Area Shipped (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Revenue, Major Customer [Line Items]
Product revenue	$ 307,413	$ 278,112	$ 911,574	$ 848,690
Concentration Risk, Percentage	100.00%	100.00%	100.00%	100.00%
United States (U.S.) | Reportable Geographical Components
Revenue, Major Customer [Line Items]
Product revenue	$ 207,060	$ 186,919	$ 613,197	$ 571,158
Europe, Middle East and Africa | Reportable Geographical Components
Revenue, Major Customer [Line Items]
Product revenue	56,223	54,257	177,053	176,781
Asia and Australia | Reportable Geographical Components
Revenue, Major Customer [Line Items]
Product revenue	34,878	27,583	94,134	73,155
North and South America (excluding the U.S.) | Reportable Geographical Components
Revenue, Major Customer [Line Items]
Product revenue	$ 9,252	$ 9,353	$ 27,190	$ 27,596