Balance Sheets Details (Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 2,530
Finite-Lived Intangible Assets, Gross	24,876	24,876
Finite-Lived Intangible Assets, Accumulated Amortization	(16,160)	(15,316)
Finite-Lived Intangible Assets, Net	8,716	9,560
Finite-Lived Intangible Assets, Amortization Expense, Year Two	3,374
Finite-Lived Intangible Assets, Amortization Expense, Year Three	2,812
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	3,098	3,098
Finite-Lived Intangible Assets, Accumulated Amortization	(3,098)	(3,098)
Finite-Lived Intangible Assets, Net	0	0
Finite-Lived Intangible Asset, Useful Life	5 years
Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,534	1,534
Finite-Lived Intangible Assets, Accumulated Amortization	(1,534)	(1,534)
Finite-Lived Intangible Assets, Net	0	0
Finite-Lived Intangible Asset, Useful Life	5 years
Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	20,244	20,244
Finite-Lived Intangible Assets, Accumulated Amortization	(11,528)	(10,684)
Finite-Lived Intangible Assets, Net	$ 8,716	$ 9,560
Finite-Lived Intangible Asset, Useful Life	6 years