Other Income (Expense), Net - Components of Other Income Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Income and Expenses [Abstract]
Foreign currency gain	$ 1,213	$ 162
Other miscellaneous income (expense)	1,106	(8)
Total other income (expense), net	$ 2,319	$ 154