Revenue and Geographic Information - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 24, 2021	Sep. 25, 2020	Sep. 24, 2021	Sep. 25, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 260,746	$ 226,276	$ 734,519	$ 588,006
Products transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	254,170	221,306	714,351	572,028
Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue	6,576	4,970	20,168	15,978
United States
Disaggregation of Revenue [Line Items]
Revenue	227,561	199,289	645,459	523,100
International
Disaggregation of Revenue [Line Items]
Revenue	$ 33,185	$ 26,987	$ 89,060	$ 64,906