Certain Balance Sheet Components Summary of the Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Summary of Allowance for Doubtful Accounts Activity [Line Items]
Beginning balance	$ 3,939	$ 5,422	$ 5,949	$ 6,195
Valuation Allowances and Reserves, Adjustments	353	(141)	265	(111)
Accounts written-off	(77)	(162)	(1,919)	(503)
EffectsOfChangeInExchangeRates	39	(160)	(41)	(622)
Ending balance	$ 4,254	$ 4,959	$ 4,254	$ 4,959