Accumulated Other Comprehensive Loss - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss) Foreign Currency Translation adjustment, net of tax	$ (6,254)	$ 11,324	$ 4,238	$ (18,945)
Unrecognized Net Defined Benefit Plan Costs [Member]
Accumulated Other Comprehensive Income [Line Items]
Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	(1,400)		(2,700)
Benefit for Income Taxes	500		900
Net Prior Service Credit Arising During the Period, Before Tax	500		1,200
Amortization of Net Actuarial Losses, Before Tax	(1,900)		(3,900)
Change in Fair Value of Derivatives [Member]
Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	(500)		(1,300)
Benefit for Income Taxes	200		500
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss) Foreign Currency Translation adjustment, net of tax	(6,000)		9,000
Foreign Currency Transaction and Translation Gain (Loss) Related to Net Investment Hedges, Before Reclassification and Tax	1,400		(4,800)
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	(1,200)		(1,800)
(Provision) Benefit for Income Taxes	(500)		1,800
Cost of Goods, Total [Member] | Natural Gas [Member] | Change in Fair Value of Derivatives [Member]
Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	(300)		(800)
Interest Expense [Member] | Interest Rate Contract [Member] | Change in Fair Value of Derivatives [Member]
Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	$ (200)		$ (500)