Other Income (Expense), Net - Components of Other Income Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other Income and Expenses [Abstract]
Foreign currency loss	$ (2,303)	$ (1,530)	$ (1,089)	$ (1,368)
Equity income	792	0	1,067	0
Other miscellaneous (expense) income	(41)	301	789	293
Total other (expense) income, net	$ (1,552)	$ (1,229)	$ 767	$ (1,075)