Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenue
Product	$ 287,324	$ 242,771	$ 98,716
Service	32,092	32,441	33,917
Royalties, primarily from SEN			389
Total Revenue	319,416	275,212	133,022
Cost of revenue
Product	181,241	168,047	84,185
Service	23,438	21,327	20,773
Total Cost of revenue	204,679	189,374	104,958
Gross profit	114,737	85,838	28,064
Operating expenses
Research and development	47,176	39,524	32,661
Sales and marketing	29,255	27,549	25,209
General and administrative	31,174	32,132	34,087
Restructuring charges			5,541
Total Operating expenses	107,605	99,205	97,498
Income (loss) from operations	7,132	(13,367)	(69,434)
Other income (expense)
Gain on sale of SEN			1,080
Equity loss of SEN			(3,238)
Interest income	42	96	181
Interest expense			(1,676)
Other, net	297	(3,990)	(3,516)
Total Other income (expense)	339	(3,894)	(7,169)
Income (loss) before income taxes	7,471	(17,261)	(76,603)
Income taxes	2,394	312	865
Net income (loss)	$ 5,077	$ (17,573)	$ (77,468)
Net income (loss) per share
Basic net income (loss) per share (in dollars per share)	$ 0.05	$ (0.17)	$ (0.75)
Diluted net income (loss) per share (in dollars per share)	$ 0.05	$ (0.17)	$ (0.75)
Shares used in computing basic and diluted net income (loss) per share
Weighted average common shares outstanding basic (in shares)	106,234	104,522	103,586
Weighted average common shares outstanding diluted (in shares)	109,098	104,522	103,586