Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net revenue	$ 229,963	$ 249,082
Cost of revenue	163,722	167,074
Gross profit	66,241	82,008
Operating expenses:
Research and development	19,739	18,832
Sales and marketing	33,031	35,855
General and administrative	13,134	13,117
Other operating expenses (income), net	(332)	196
Total operating expenses	65,572	68,000
Income from operations	669	14,008
Interest income, net	262	701
Other income (expense), net	(4,586)	341
Income (loss) before income taxes	(3,655)	15,050
Provision for income taxes	518	2,207
Net income (loss)	$ (4,173)	$ 12,843
Net income (loss) per share
Basic	$ (0.14)	$ 0.41
Diluted	$ (0.14)	$ 0.39
Weighted average shares used to compute net income (loss) per share:
Basic	29,583	31,483
Diluted	29,583	32,874