Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements of Operations [Abstract]
Net revenues	$ 69,569	$ 171,648	$ 157,902	$ 262,051
Cost of revenues	51,567	138,722	120,023	215,340
Gross profit	18,002	32,926	37,879	46,711
Operating expenses:
Research and development	35,491	49,653	71,350	86,717
Selling, general and administrative	16,519	22,311	36,383	42,447
Goodwill impairment		7,851		7,851
Restructuring charges	(73)	4,470	4,652	12,865
Total operating expenses	51,937	84,285	112,385	149,880
Loss from operations	(33,935)	(51,359)	(74,506)	(103,169)
Gain on investments	2,098		2,098	(209)
Interest income	173	228	348	498
Gain on acquisition				43,402
Other income	4,851	59	5,529	352
Loss before provision for income taxes	(26,813)	(51,072)	(66,531)	(59,126)
Provision (benefit from) for income taxes	(554)	(2,255)	501	(1,530)
Net loss	$ (26,259)	$ (48,817)	$ (67,032)	$ (57,596)
Net loss per share - basic and diluted	$ (0.15)	$ (0.28)	$ (0.38)	$ (0.38)
Shares used in computing net loss per share - basic and diluted	176,056	174,018	175,862	152,059