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Income Taxes (Schedule Of Deferred Tax Assets And Deferred Tax Liabilities) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Deferred tax assets: |  |
Postretirement and other employee benefits | $ 41,604 | $ 51,646
Foreign tax credit and other carryforwards | 46,283 | 54,102
Capitalized research and experimental costs | 20,243 | 999
Environmental reserves | 3,503 | 4,057
Inventory adjustments | 16,255 | 13,365
Capital loss | 2,697 | 3,222
Other | 5,889 | 9,052
Total gross deferred tax assets | 153,884 | 136,443
Less: valuation allowance | (20,411) | (26,312)
Total deferred tax assets | 133,473 | 110,131
Deferred tax liabilities: |  |
Fixed assets | 109,824 | 102,568
Debt discount amortization | 6,620 | 9,720
Inventory | 9,212 | 9,531
Goodwill and acquired intangibles | 10,813 | 11,299
Other | 2,204 | 2,420
Total deferred tax liabilities | 138,673 | 135,538
Net deferred tax liability | $ 5,200 | $ 25,407

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