Balance Sheet Components (Valuation And Qualifying Accounts) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Balance Sheet Components [Abstract]
Beginning balance January 1	$ 5,322	[1]	$ 6,160	[1]	$ 5,600	[1]
Charged to costs and expenses	1,044	[1]	945	[1]	1,789	[1]
Deductions	917	[1],[2]	1,879	[1],[2]	617	[1],[2]
Currency translation and other	411	[1]	96	[1]	(612)	[1]
Ending balance December 31	$ 5,860	[1]	$ 5,322	[1]	$ 6,160	[1]

[1] Includes provision for doubtful accounts, sales returns and sales discounts granted to customers.

[2] Represents uncollectible accounts, net of recoveries.