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Supplementary Balance Sheet Detail (Schedule Of Amounts Recognized In Balance Sheet) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Balance Sheet Related Disclosures [Abstract] |  |
Raw materials and supplies | $ 132,113 | $ 101,098
Work in process | 127,127 | 110,331
Finished goods | 30,192 | 54,535
Inventories | 289,432 | 265,964
Prepaid expenses | 8,193 | 9,242
Value-added tax and other indirect taxes receivable* | 40,861 | 10,666
Spare parts inventory | 12,408 | 11,825
Other current assets | 11,902 | 3,381
Prepaid Expense and Other Assets, Current | 73,364 | 35,114
Land and improvements | 49,201 | 50,285
Buildings | 79,660 | 80,041
Machinery and equipment and other | 621,808 | 621,478
Construction in progress | 64,629 | 33,098
Property, plant and equipment | 815,298 | 784,902
Payrolls (including incentive programs) | 16,904 | 13,159
Employee benefits | 7,272 | 7,128
Deferred Revenue | 9,840 | 13,056
Other | 22,389 | 23,158
Accrued liabilities, net | 56,405 | 56,501
Post-employment benefits | 14,597 | 15,669
Pension and related benefits | 31,139 | 37,847
Other | 22,921 | 27,962
Other long - term obligations | $ 68,657 | $ 81,478

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