Balance Sheet Components (Schedule Of Goodwill By Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014
Goodwill [Roll Forward]
Goodwill (period start)	$ 155,916
Goodwill, Acquired During Period	0
Goodwill (period end)	155,916
Retail [Member]
Goodwill [Roll Forward]
Goodwill (period start)	45,441
Goodwill, Acquired During Period	0
Goodwill (period end)	45,441
Commercial [Member]
Goodwill [Roll Forward]
Goodwill (period start)	36,279
Goodwill, Acquired During Period	0
Goodwill (period end)	36,279
Service Provider [Member]
Goodwill [Roll Forward]
Goodwill (period start)	74,196
Goodwill, Acquired During Period	0
Goodwill (period end)	$ 74,196