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Supplementary Balance Sheet Detail (Tables) | 12 Months Ended
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Dec. 31, 2014
Balance Sheet Related Disclosures [Abstract] |
Schedule Of Amounts Recognized In Balance Sheet |
| At December 31,
2013 |  | 2014
| (Dollars in thousands)
Inventories: |  |  |
Raw materials and supplies | $ | 175,192 |  |  | $ | 122,218 |
Work in process | 239,114 |  |  | 176,141 |
Finished goods | 76,108 |  |  | 84,544 |
| 490,414 |  |  | 382,903 |
Prepaid expenses and other current assets: |  |  |
Prepaid expenses | $ | 9,554 |  |  | $ | 9,923 |
Current portion of deferred taxes | 37,058 |  |  | 28,426 |
Value added tax and other indirect taxes receivable | 25,061 |  |  | 39,837 |
Other current assets | 2,117 |  |  | 3,437 |
| $ | 73,790 |  |  | $ | 81,623 |
Property, plant and equipment: |  |  |
Land and improvements | $ | 37,416 |  |  | $ | 36,375 |
Buildings | 196,802 |  |  | 193,427 |
Machinery and equipment and other | 1,278,655 |  |  | 1,212,120 |
Construction in progress | 76,007 |  |  | 58,899 |
| $ | 1,588,880 |  |  | $ | 1,500,821 |
Other accrued liabilities: |  |  |
Payrolls (including incentive programs) | $ | 9,330 |  |  | $ | 6,151 |
Customer prepayments | 9,599 |  |  | 5,534 |
Employee compensation and benefits | 10,136 |  |  | 8,932 |
Other | 11,874 |  |  | 22,702 |
| $ | 40,939 |  |  | $ | 43,319 |
Other long term obligations: |  |  |
Postretirement benefits | $ | 24,852 |  |  | $ | 24,833 |
Pension and related benefits | 54,173 |  |  | 65,882 |
Other | 18,922 |  |  | 16,851 |
| $ | 97,947 |  |  | $ | 107,566 |
Schedule Of Analysis Of The Allowance For Doubtful Accounts |
| At December 31,
2012 |  | 2013 |  | 2014
| (Dollars in thousands)
Balance at beginning of year | $ | 4,153 |  |  | $ | 7,573 |  |  | $ | 6,718 |
Additions | 5,161 |  |  | 2,914 |  |  | 8,675 |
Deductions | (1,741 | ) |  | (3,769 | ) |  | (7,922 | )
Balance at end of year | $ | 7,573 |  |  | $ | 6,718 |  |  | $ | 7,471 |
Schedule Of Inventory Reserves | .

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- Definition Tabular disclosure of the amounts that are recognized in the balance sheet (or statement of financial position) for pension plans and/or other employee benefit plans, showing separately the assets and current and noncurrent liabilities (if applicable) recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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