Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenue
Product	$ 37,093	$ 64,350	$ 136,096	$ 235,287
Service	7,547	8,105	22,664	23,718
Total revenue	44,640	72,455	158,760	259,005
Cost of revenue
Product	24,809	40,055	84,692	149,833
Service	5,464	5,505	16,377	17,058
Total cost of revenue	30,273	45,560	101,069	166,891
Gross profit	14,367	26,895	57,691	92,114
Operating expenses
Research and development	9,851	11,389	31,999	35,036
Sales and marketing	5,470	7,237	18,284	22,731
General and administrative	6,325	8,458	20,611	25,929
Restructuring charges	578		3,612
Total operating expenses	22,224	27,084	74,506	83,696
Income (loss) from operations	(7,857)	(189)	(16,815)	8,418
Other income (expense)
Interest income	9	7	27	24
Other, net	(627)	1,563	(999)	(45)
Total other income (expense)	(618)	1,570	(972)	(21)
Income (loss) before income taxes	(8,475)	1,381	(17,787)	8,397
Income taxes	243	230	1,429	1,207
Net income (loss)	$ (8,718)	$ 1,151	$ (19,216)	$ 7,190
Net income (loss) per share
Basic and diluted net income (loss) per share (in dollars per share)	$ (0.08)	$ 0.01	$ (0.18)	$ 0.07
Shares used in computing basic and diluted net income (loss) per share
Basic weighted average common shares (in shares)	107,855	106,417	107,521	106,152
Diluted weighted average common shares (in shares)	107,855	108,192	107,521	109,452