Significant Components of Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Deferred tax assets:
Pension and other postretirement liabilities	$ 49,273	$ 29,936
Rationalization and other accrued liabilities	25,481	19,886
AMT and other credit carryforwards	6,129	5,676
Net operating loss carryforwards	21,228	21,195
Foreign currency translation	2	3,279
Inventory and related reserves	981	12,084
Other	8,301	10,451
Total deferred tax assets	111,395	102,507
Deferred tax liabilities:
Property, plant and equipment	(205,177)	(158,671)
Other intangible assets	(27,387)	(24,827)
Foreign currency translation	(18,078)
Other	(4,322)	(7,452)
Total deferred tax liabilities	(254,964)	(190,950)
Valuation allowance	(11,840)	(16,231)
Deferred Tax Assets (Liabilities), Net, Total	$ (155,409)	$ (104,674)