Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Disaggregation of Revenue [Line Items]
Total revenue	$ 330,273	$ 292,707
United States
Disaggregation of Revenue [Line Items]
Total revenue	170,526	132,522
Other Americas
Disaggregation of Revenue [Line Items]
Total revenue	19,688	15,132
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Total revenue	88,578	98,992
Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenue	51,481	46,061
Product
Disaggregation of Revenue [Line Items]
Revenue	255,192	223,007
Services
Disaggregation of Revenue [Line Items]
Revenue	75,081	69,700
Direct
Disaggregation of Revenue [Line Items]
Total revenue	244,351	248,196
Indirect
Disaggregation of Revenue [Line Items]
Total revenue	$ 85,922	$ 44,511