Balance Sheet Components (Schedule Of Intangibles, Net) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Purchased Intangible Assets [Line Items]
Gross	$ 128,144	$ 128,144
Accumulated Amortization	(79,197)	(61,914)
Finite-lived intangibles, net	48,947	66,230
Intangibles, net	48,947	66,230
Technology [Member]
Purchased Intangible Assets [Line Items]
Gross	61,099	61,099
Accumulated Amortization	(48,485)	(39,341)
Finite-lived intangibles, net	12,614	21,758
Customer Contracts And Relationships [Member]
Purchased Intangible Assets [Line Items]
Gross	56,500	56,500
Accumulated Amortization	(23,290)	(16,205)
Finite-lived intangibles, net	33,210	40,295
Other [Member]
Purchased Intangible Assets [Line Items]
Gross	10,545	10,545
Accumulated Amortization	(7,422)	(6,368)
Finite-lived intangibles, net	$ 3,123	$ 4,177