Balance Sheet Components Valuation And Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance January 1	$ 5,841	[1]	$ 5,596	[1]	$ 5,860	[1]
Charged to costs and expenses, net of recoveries	2,643	[1]	2,288	[1]	653	[1]
Utilization	(1,195)	[1]	(1,921)	[1]	(1,151)	[1]
Currency translation and other	(328)	[1]	(122)	[1]	234	[1]
Ending balance December 31	$ 6,961	[1]	$ 5,841	[1]	$ 5,596	[1]

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