Balance Sheet Components (Schedule Of Property And Equipment, Net) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 29, 2013	Dec. 31, 2012
Total property and equipment, gross	$ 92,645	$ 73,651
Accumulated depreciation and amortization	(67,195)	(54,626)
Total property and equipment, net	25,450	19,025
Computer Equipment [Member]
Total property and equipment, gross	8,088	7,290
Furniture, Fixtures And Leasehold Improvements [Member]
Total property and equipment, gross	13,649	12,761
Software [Member]
Total property and equipment, gross	24,328	21,521
Machinery And Equipment [Member]
Total property and equipment, gross	46,546	31,694
Construction in Progress [Member]
Total property and equipment, gross	$ 34	$ 385