Components of Other Income Expense (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Income And Expenses [Abstract]
Foreign currency gain (loss)	$ (455)	$ (1,002)	$ (554)	$ (2,933)
Other miscellaneous income (expense)	301	(656)	626	1,100
Total other income (expense), net	$ (154)	$ (1,658)	$ 72	$ (1,833)