Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenue
Product	$ 174,309	$ 287,324	$ 242,771
Services	29,076	32,092	32,441
Total revenue	203,385	319,416	275,212
Cost of revenue
Product	123,593	181,241	168,047
Services	21,621	23,438	21,327
Total cost of revenue	145,214	204,679	189,374
Gross profit	58,171	114,737	85,838
Operating expenses
Research and development	40,401	47,176	39,524
Sales and marketing	25,889	29,255	27,549
General and administrative	26,554	31,174	32,132
Gain on sale of dry strip assets and intellectual property	(7,904)
Restructuring charges	4,169
Total operating expenses	89,109	107,605	99,205
Income (loss) from operations	(30,938)	7,132	(13,367)
Other income (expense)
Interest income	45	42	96
Other, net	(1,495)	297	(3,990)
Total other income (expense)	(1,450)	339	(3,894)
Income (loss) before income taxes	(32,388)	7,471	(17,261)
Income taxes	1,646	2,394	312
Net income (loss)	$ (34,034)	$ 5,077	$ (17,573)
Net income (loss) per share
Basic (in dollars per share)	$ (0.32)	$ 0.05	$ (0.17)
Diluted (in dollars per share)	$ (0.32)	$ 0.05	$ (0.17)
Shares used in computing net income (loss) per share
Basic (in shares)	107,619	106,234	104,522
Diluted (in shares)	107,619	109,098	104,522