Balance Sheet Components (Schedule Of Goodwill By Segment) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Roll Forward]
Goodwill (period start)	$ 100,880	$ 85,944
Goodwill, Acquired During Period	55,036	14,936
Goodwill (period end)	155,916	100,880
Retail [Member]
Goodwill [Roll Forward]
Goodwill (period start)	45,441	33,546
Goodwill, Acquired During Period	0	11,895
Goodwill (period end)	45,441	45,441
Commercial [Member]
Goodwill [Roll Forward]
Goodwill (period start)	35,084	32,043
Goodwill, Acquired During Period	1,195	3,041
Goodwill (period end)	36,279	35,084
Service Provider [Member]
Goodwill [Roll Forward]
Goodwill (period start)	20,355	20,355
Goodwill, Acquired During Period	53,841	0
Goodwill (period end)	$ 74,196	$ 20,355