Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 04, 2020	Mar. 30, 2019
Income Statement [Abstract]
Revenue	$ 188,158	$ 271,890
Cost of revenue	133,236	182,437
Gross profit	54,922	89,453
Operating expenses:
Research and development	81,589	77,039
Sales and marketing	56,961	68,616
General and administrative	42,041	26,692
Total operating expenses	180,591	172,347
Operating loss	(125,669)	(82,894)
Interest income, net	1,293	3,466
Other income (expense), net	(4)	1,273
Loss before income taxes	(124,380)	(78,155)
Income tax expense (benefit)	(144,674)	1,310
Net income (loss)	$ 20,294	$ (79,465)
Net income (loss) per share:
Basic (in dollars per share)	$ 0.08	$ (0.31)
Diluted (in dollars per share)	$ 0.07	$ (0.31)
Shares used to compute net income (loss) per share:
Basic (in shares)	265,661	253,124
Diluted (in shares)	276,946	253,124