Balance Sheet Components (Schedule Of Property And Equipment, Net) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Total property and equipment, gross	$ 98,945	$ 73,651
Accumulated depreciation and amortization	(71,751)	(54,626)
Total property and equipment, net	27,194	19,025
Computer Equipment [Member]
Total property and equipment, gross	8,527	7,290
Furniture, Fixtures And Leasehold Improvements [Member]
Total property and equipment, gross	14,019	12,761
Software [Member]
Total property and equipment, gross	25,722	21,521
Machinery and Equipment [Member]
Total property and equipment, gross	50,656	31,694
Construction in Progress [Member]
Total property and equipment, gross	$ 21	$ 385