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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2018
Income Tax Disclosure [Abstract] |
Schedule Of U.S. And Non-U.S. Components Of Income (Loss) Before Provision (Benefit) For Income Taxes | The following table summarizes the U.S. and non-U.S. components of income (loss) from continuing operations before provision for income taxes:
| For the Year Ended December 31,
| 2018 |  | 2017 |  | 2016
| (Dollars in thousands)
U.S. | $ | (68,032 | ) |  | $ | (26,981 | ) |  | $ | (44,971 | )
Non-U.S. | 970,840 |  |  | 30,412 |  |  | (71,450 | )
| $ | 902,808 |  |  | $ | 3,431 |  |  | $ | (116,421 | )
Schedule Of Income Tax Expense (Benefit) | Income tax expense (benefit) consists of the following:
| For the Year Ended December 31,
| 2018 |  | 2017 |  | 2016
U.S income taxes: |  |  |  |  |
Current | $ | 787 |  |  | $ | (1,066 | ) |  | $ | (878 | )
Deferred | (52,145 | ) |  | 38 |  |  | 1,152 |
| (51,358 | ) |  | (1,028 | ) |  | 274 |
Non-U.S. income taxes: |  |  |  |  |
Current | 85,252 |  |  | 5,924 |  |  | 5,389 |
Deferred | 15,026 |  |  | (15,677 | ) |  | (13,215 | )
| 100,278 |  |  | (9,753 | ) |  | (7,826 | )
Total income tax expense (benefit) | $ | 48,920 |  |  | $ | (10,781 | ) |  | $ | (7,552 | )
Schedule Of Income Tax Expense (Benefit) Computed By Applying The U.S. Federal Income Tax Rate | Income tax expense (benefit) differed from the amounts computed by applying the U.S. federal income tax rate of 35% to income before expense (benefit) for taxes as set forth in the following table:
| For the Year Ended December 31,
| 2018 |  | 2017 |  | 2016
| (Dollars in thousands)
Tax at statutory U.S. federal rate | $ | 189,590 |  |  | $ | 1,201 |  |  | $ | (40,747 | )
Impact of U.S. Tax Cut and Jobs Act - GILTI | 93,739 |  |  | — |  |  | — |
Impact of the 2017 Tax Act - transition tax | — |  |  | 39,628 |  |  | — |
Impact of the 2017 Tax Act - tax rate change | — |  |  | 52,228 |  |  | — |
Impact of Tax Receivable Agreement | 18,160 |  |  | — |  |  | — |
Valuation allowance, net | (93,125 | ) |  | (89,269 | ) |  | 35,091 |
State taxes, net of federal tax benefit | 1,529 |  |  | 3,437 |  |  | (2,324 | )
U.S. tax impact of foreign earnings (net of foreign tax credits) | 792 |  |  | 1,151 |  |  | 51 |
Investment in subsidiary impairment deduction | — |  |  | — |  |  | (10,114 | )
Establishment/resolution of uncertain tax positions | (345 | ) |  | (840 | ) |  | (513 | )
Adjustment for foreign income taxed at different rates | (95,822 | ) |  | (2,359 | ) |  | 12,738 |
Foreign tax credits | (65,046 | ) |  | (17,956 | ) |  | (175 | )
Other | (552 | ) |  | 1,998 |  |  | (1,559 | )
Provision (benefit) for income taxes | $ | 48,920 |  |  | $ | (10,781 | ) |  | $ | (7,552 | )
Schedule Of Deferred Tax Assets And Deferred Tax Liabilities |
| As of December 31,
| 2018 |  | 2017
| (Dollars in thousands)
Deferred tax assets: |  |  |
Postretirement and other employee benefits | $ | 18,395 |  |  | $ | 19,392 |
Foreign tax credit and other carryforwards | 111,325 |  |  | 175,229 |
Capitalized research and experimental costs | 7,695 |  |  | 9,417 |
Environmental reserves | 976 |  |  | 493 |
Inventory | 14,251 |  |  | 7,933 |
Original issue discount | — |  |  | 2,603 |
Long-term contract option amortization | 1,144 |  |  | 1,204 |
Provision for rationalization charges | 351 |  |  | 502 |
Other | 4,270 |  |  | 1,536 |
Total gross deferred tax assets | 158,407 |  |  | 218,309 |
Less: valuation allowance | (58,446 | ) |  | (150,839 | )
Total deferred tax assets | 99,961 |  |  | 67,470 |
Deferred tax liabilities: |  |  |
Fixed assets | $ | 59,521 |  |  | $ | 68,098 |
Debt discount amortization / Deferred financing fees | — |  |  | 3,191 |
Inventory | 7,751 |  |  | 5,128 |
Goodwill and acquired intangibles | 3,668 |  |  | — |
Other | 3,138 |  |  | 2,031 |
Total deferred tax liabilities | 74,078 |  |  | 78,448 |
Net deferred tax asset (liability) | $ | 25,883 |  |  | $ | (10,978 | )
Schedule Of Valuation Allowance Activity |
| (Dollars in thousands)
Balance as of December 31, 2015 | $ | 165,539 |
Charged to income | 78,469 |
Translation adjustment | 583 |
Changes attributable to movement in underlying assets | 250 |
Balance as of December 31, 2016 | $ | 244,841 |
Credited to income | (87,194 | )
Translation adjustment | 207 |
Changes attributable to movement in underlying assets | (7,015 | )
Balance as of December 31, 2017 | $ | 150,839 |
Credited to income | (93,125 | )
Translation adjustment | (302 | )
Changes attributable to movement in underlying assets | 1,034 |
Balance as of December 31, 2018 | $ | 58,446 |
Reconciliation Of The Beginning And Ending Amount Of Unrecognized Tax Benefits |
| (Dollars in thousands)
Balance as of December 31, 2016 | $ | 3,338 |
Additions for tax positions of prior years | 114 |
Lapse of statutes of limitations | (989 | )
Foreign currency impact | 29 |
Balance as of December 31, 2017 | $ | 2,492 |
Reductions for tax positions of prior years | (100 | )
Lapse of statutes of limitations | (373 | )
Settlements | (21 | )
Foreign currency impact | (8 | )
Balance as of December 31, 2018 | $ | 1,990 |

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