Stockholders' Equity - Summary of Effects of Stock Based Compensation on Company's Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Effects Of Stock Based Compensation [Line Items]
Gross share based compensation before amortization	$ 38,073	$ 38,423	$ 40,974
Cost of revenue—amortization from balance sheet	4,706	4,986	4,746
Total stock-based compensation expense	42,779	43,409	45,720
Cost of revenue
Effects Of Stock Based Compensation [Line Items]
Gross share based compensation before amortization	1,743	1,635	3,065
Research and development
Effects Of Stock Based Compensation [Line Items]
Gross share based compensation before amortization	17,457	16,270	15,845
Sales and marketing
Effects Of Stock Based Compensation [Line Items]
Gross share based compensation before amortization	8,413	10,869	11,288
General and administrative
Effects Of Stock Based Compensation [Line Items]
Gross share based compensation before amortization	$ 10,460	$ 9,649	$ 10,776