Accumulated Other Comprehensive Loss - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation	$ 30,477	$ (6,254)	$ 37,934	$ 4,238
Unrecognized Net Defined Benefit Plan Costs [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive (Loss) Reclassification Adjustment from AOCI, Pension and other Postretirement Benefit Plans, before tax	(900)		(1,900)
Benefit for Income Taxes	300		600
Amortization of net actuarial (losses), before tax	(1,700)		(3,400)
Net prior service credit arising during period, before tax	800		1,500
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation	46,100		55,100
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Related to Net Investment Hedges, before Reclassification and Tax	(23,600)		(28,500)
Foreign currency translation, tax benefit related to net investment hedges	8,800		10,600
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period Related to Intra-Entity Transactions of a Long-Term Investment Nature, Net of Tax	$ (900)		$ 700