Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Pension and other postretirement liabilities	$ 18,653	$ 21,235
Rationalization and other accrued liabilities	19,343	17,716
AMT and other credit carryforwards	3,701	1,910
Net operating loss carryforwards	31,679	34,102
Other Intangible Assets	3,964	0
Foreign currency translation	234	10,170
Inventory and related reserves	6,988	9,832
Other	5,971	2,093
Total deferred tax assets	90,533	97,058
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	21,100	26,600
Deferred tax liabilities:
Property, plant and equipment	(185,101)	(175,486)
Pension and other postretirement liabilities	(14,393)	(23,780)
Other intangible assets	(117,168)	(115,547)
Other	(7,275)	(3,961)
Total deferred tax liabilities	(323,937)	(318,774)
Valuation allowance	(13,541)	(14,089)
Net deferred tax liabilities	(246,945)	(235,805)
Deferred Tax Liabilities, Net, Noncurrent	$ 268,000	$ 262,400