Certain Balance Sheet Components Summary of the Allowance for Doubtful Accounts (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Summary of Allowance for Doubtful Accounts Activity [Line Items]
Beginning balance	$ 7,355	$ 6,948	$ 8,368	$ 7,372
Valuation Allowances and Reserves, Adjustments	(356)	1,290	(545)	1,461
Accounts written-off	(233)	(164)	(1,023)	(467)
EffectsOfChangeInExchangeRates	(242)	153	(276)	(139)
Ending balance	$ 6,524	$ 8,227	$ 6,524	$ 8,227