Balance Sheet Components (Intellectual Property Prepaid Royalties and Intangible Assets) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Intellectual Property Prepaid Royalties [Abstract]
Amortization for license agreements	$ 946,000	$ 761,000
Unamortized prepaid royalties balance	3,600,000
Future amortization expense, prepaid royalties [Abstract]
2013	1,008,000
2014	771,000
2015	498,000
2016	389,000
2017	334,000
Thereafter	645,000
Total	3,645,000
Schedule of Intangible Assets [Abstract]
Total intangible assets, net	122,269,000	95,016,000
Intangible asset amortization expense	19,739,000	11,375,000	1,849,000
Future Amortization Expense [Abstract]
2013	23,911,000
2014	22,980,000
2015	20,191,000
2016	14,019,000
2017	11,530,000
Thereafter	29,638,000
Total intangible assets, net	122,269,000	95,016,000
Developed Technology Rights [Member]
Schedule of Intangible Assets [Abstract]
Weighted Average Useful Life	10 years
Intangible assets	99,003,000	76,843,000
Less: accumulated amortization	(23,153,000)	(12,771,000)
Total intangible assets, net	75,850,000	64,072,000
Future Amortization Expense [Abstract]
Total intangible assets, net	75,850,000	64,072,000
Developed Technology Rights [Member] | Minimum [Member]
Schedule of Intangible Assets [Abstract]
Weighted Average Useful Life	2 years
Developed Technology Rights [Member] | Maximum [Member]
Schedule of Intangible Assets [Abstract]
Weighted Average Useful Life	16 years
Customer relationships [Member]
Schedule of Intangible Assets [Abstract]
Weighted Average Useful Life	6 years
Intangible assets	60,066,000	35,235,000
Less: accumulated amortization	(13,902,000)	(4,742,000)
Total intangible assets, net	46,164,000	30,493,000
Future Amortization Expense [Abstract]
Total intangible assets, net	46,164,000	30,493,000
Customer relationships [Member] | Minimum [Member]
Schedule of Intangible Assets [Abstract]
Weighted Average Useful Life	2 years
Customer relationships [Member] | Maximum [Member]
Schedule of Intangible Assets [Abstract]
Weighted Average Useful Life	7 years
Licensing Agreements And Other Intangible Assets [Member]
Schedule of Intangible Assets [Abstract]
Weighted Average Useful Life	3 years
Intangible assets	871,000	871,000
Less: accumulated amortization	(616,000)	(420,000)
Total intangible assets, net	255,000	451,000
Future Amortization Expense [Abstract]
Total intangible assets, net	$ 255,000	$ 451,000
Licensing Agreements And Other Intangible Assets [Member] | Minimum [Member]
Schedule of Intangible Assets [Abstract]
Weighted Average Useful Life	2 years
Licensing Agreements And Other Intangible Assets [Member] | Maximum [Member]
Schedule of Intangible Assets [Abstract]
Weighted Average Useful Life	5 years