Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue
Product	$ 169,587	$ 174,309	$ 287,324
Services	26,045	29,076	32,092
Total revenue	195,632	203,385	319,416
Cost of revenue
Product	106,678	123,593	181,241
Services	21,019	21,621	23,438
Total cost of revenue	127,697	145,214	204,679
Gross profit	67,935	58,171	114,737
Operating expenses
Research and development	34,756	40,401	47,176
Sales and marketing	21,159	25,889	29,255
General and administrative	25,471	26,554	31,174
Gain on sale of dry strip assets and intellectual property	(1,167)	(7,904)
Restructuring charges	2,334	4,169
Total operating expenses	82,553	89,109	107,605
Income (loss) from operations	(14,618)	(30,938)	7,132
Other income (expense)
Interest income	44	45	42
Interest expense	(457)
Other, net	(1,073)	(1,495)	297
Total other income (expense)	(1,486)	(1,450)	339
Income (loss) before income taxes	(16,104)	(32,388)	7,471
Income taxes	1,040	1,646	2,394
Net income (loss)	$ (17,144)	$ (34,034)	$ 5,077
Net income (loss) per share
Basic (in dollars per share)	$ (0.16)	$ (0.32)	$ 0.05
Diluted (in dollars per share)	$ (0.16)	$ (0.32)	$ 0.05
Shares used in computing net income (loss) per share
Basic (in shares)	108,869	107,619	106,234
Diluted (in shares)	108,869	107,619	109,098