Income Tax Expense (Deferred Income Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Deferred income tax assets
Future employee benefits	$ 45,502	$ 37,931
Environmental and future shutdown reserves	7,751	7,977
Loss on derivatives	15,466	10,176
Trademark expenses	4,911	4,590
Foreign currency translation adjustments	4,713	2,800
Litigation accruals	1,289	1,474
Financed intangible asset	1,779	1,521
Other	3,465	2,034
Deferred income tax assets	84,876	68,503
Deferred income tax liabilities
Depreciation and amortization	25,664	21,646
Intangibles	5,067	8,272
Inventory valuation and related reserves	2,851	2,836
Undistributed earnings of foreign subsidiaries	4,995	4,073
Other	3,233	2,826
Deferred income tax liabilities	41,810	39,653
Net deferred income tax assets	43,066	28,850	38,788
Deferred income tax assets-current	7,261	6,876
Deferred income tax assets-noncurrent	$ 35,805	$ 21,974

The amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis of trademark assets and the basis of trademark assets computed in accordance with generally accepted accounting principles. The difference in basis is attributable to different amortization methodologies.

No definition available.