Other Income (Expense) - Schedule of Other Income (Expense) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other Income (Expense) [Abstract]
Foreign currency transaction gains (losses)	$ (90)	$ 759	$ (1,025)	$ 631
Gains (losses) on foreign currency derivative instruments not designated as hedges	67	(1,331)	(97)	(608)
Other miscellaneous income (expense)	(144)	173	126	241
Other income (expense)	$ (167)	$ (399)	$ (996)	$ 264