Unaudited Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016
Net revenue	$ 355,483	$ 338,458	$ 1,009,863	$ 960,369
Cost of revenue	252,388	235,336	717,900	658,894
Gross profit	103,095	103,122	291,963	301,475
Operating expenses:
Research and development	23,127	21,935	69,167	65,876
Sales and marketing	40,311	37,337	115,001	110,703
General and administrative	14,229	14,111	40,373	39,995
Restructuring and other charges	19	(130)	78	3,859
Litigation reserves, net	15	13	68	58
Total operating expenses	77,701	73,266	224,687	220,491
Income from operations	25,394	29,856	67,276	80,984
Interest income	501	291	1,388	804
Other income (expense), net	666	116	1,384	(582)
Income before income taxes	26,561	30,263	70,048	81,206
Provision for income taxes	5,767	9,144	18,678	27,464
Net income	$ 20,794	$ 21,119	$ 51,370	$ 53,742
Net income per share:
Basic (in dollars per share)	$ 0.66	$ 0.64	$ 1.59	$ 1.64
Diluted (in dollars per share)	$ 0.64	$ 0.62	$ 1.54	$ 1.60
Weighted average shares used to compute net income per share:
Basic	31,704	32,913	32,335	32,688
Diluted	32,393	33,913	33,269	33,624