CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Revenue:
Product	$ 120,807	$ 98,853	$ 348,769	$ 269,087
Ratable product and related support and services	525	450	1,553	1,504
Services	20,688	12,911	54,708	39,782
Total revenue	142,020	112,214	405,030	310,373
Cost of revenue:
Cost of product	66,645	66,510	222,126	181,851
Cost of ratable product and related support and services	40	102	204	459
Cost of services	6,964	4,102	19,973	13,762
Total cost of revenue	73,649	70,714	242,303	196,072
Gross profit	68,371	41,500	162,727	114,301
Operating expenses:
Research and development	32,528	27,912	93,935	90,573
Sales and marketing	17,720	19,285	52,921	55,304
General and administrative	11,678	12,508	32,976	35,912
Total operating expenses	61,926	59,705	179,832	181,789
Income (loss) from operations	6,445	(18,205)	(17,105)	(67,488)
Other income (expense), net:
Interest income	232	175	636	678
Interest expense	(2,578)	0	(3,427)	0
Other gain (loss), net:	(444)	(617)	(805)	(892)
Total other income (expense), net	(2,790)	(442)	(3,596)	(214)
Income (loss) before income taxes	3,655	(18,647)	(20,701)	(67,702)
Provision for income taxes	308	434	1,240	1,540
Net income (loss)	$ 3,347	$ (19,081)	$ (21,941)	$ (69,242)
Net income (loss) per common share
Basic (USD per share)	$ 0.03	$ (0.17)	$ (0.19)	$ (0.63)
Diluted (USD per share)	$ 0.03	$ (0.17)	$ (0.19)	$ (0.63)
Weighted average shares used in computing net income (loss) per common share
Basic (shares)	118,740	111,579	116,653	110,216
Diluted (shares)	124,679	111,579	116,653	110,216