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Income Taxes (Schedule Of Deferred Tax Assets And Deferred Tax Liabilities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Deferred tax assets:    
Post-employment and other employee benefits $ 18,088 $ 15,088
Foreign tax credit and other carryforwards 40,172 25,856
Capitalized research and experimental costs 212 736
Environmental reserves 1,058 1,040
Inventory adjustments 7,710 5,767
Long-term contract option amortization 881 934
Previously taxed income 0 8,304
Other 1,198 2,695
Total gross deferred tax assets 69,319 60,420
Less: valuation allowance (8,956) (9,269)
Total deferred tax assets 60,363 51,151
Deferred tax liabilities:    
Fixed assets 51,474 51,410
Inventory 0 14,649
Goodwill and acquired intangibles 6,418 10,089
Mark-to-market hedges 1,403 3,903
Other 2,732 4,205
Total deferred tax liabilities 62,027 84,256
Net deferred tax liability $ (1,664) $ (33,105)