Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenue
Product	$ 51,465	$ 84,334	$ 99,003	$ 170,937
Service	7,649	9,046	15,117	15,613
Total revenue	59,114	93,380	114,120	186,550
Cost of revenue
Product	30,599	52,905	59,883	109,778
Service	5,727	6,337	10,913	11,553
Total cost of revenue	36,326	59,242	70,796	121,331
Gross profit	22,788	34,138	43,324	65,219
Operating expenses
Research and development	10,478	11,829	22,147	23,647
Sales and marketing	6,231	7,675	12,814	15,494
General and administrative	6,488	8,416	14,287	17,471
Restructuring charges	153		3,034
Total operating expense	23,350	27,920	52,282	56,612
Income (loss) from operations	(562)	6,218	(8,958)	8,607
Other income (expense)
Interest income	9	11	18	17
Other, net	551	(1,158)	(373)	(1,608)
Total other income (expense)	560	(1,147)	(355)	(1,591)
Income (loss) before income taxes	(2)	5,071	(9,313)	7,016
Income taxes	469	844	1,186	977
Net income (loss)	$ (471)	$ 4,227	$ (10,499)	$ 6,039
Net income (loss) per share
Basic and diluted net income (loss) per share (in dollars per share)		$ 0.04	$ (0.10)	$ 0.06
Shares used in computing basic and diluted net income (loss) per share
Basic weighted average common shares (in shares)	107,639	106,097	107,353	106,017
Diluted weighted average common shares (in shares)	107,639	108,911	107,353	109,723