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Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2016
Equity [Abstract] |
Amounts Included in Accumulated Other Comprehensive Income (Loss), Net of Tax | Amounts included in accumulated other comprehensive loss, net of tax, were as follows:
| Unrecognized Net Defined Benefit Plan Costs |  | Change in Fair Value of Derivatives |  | Foreign Currency Translation |  | Total
| (Dollars in thousands)
Balance at January 1, 2014 | $ | (38,921 | ) |  | $ | (3,790 | ) |  | $ | 4,592 |  |  | $ | (38,119 | )
Other comprehensive loss before reclassifications | (49,602 | ) |  | (923 | ) |  | (79,766 | ) |  | (130,291 | )
Amounts reclassified from accumulated other comprehensive loss | (729 | ) |  | 3,515 |  |  | — |  |  | 2,786 |
Other comprehensive loss | (50,331 | ) |  | 2,592 |  |  | (79,766 | ) |  | (127,505 | )
Balance at December 31, 2014 | (89,252 | ) |  | (1,198 | ) |  | (75,174 | ) |  | (165,624 | )
Other comprehensive loss before reclassifications | 2,851 |  |  | (1,410 | ) |  | (48,364 | ) |  | (46,923 | )
Amounts reclassified from accumulated other comprehensive loss | 2,121 |  |  | 1,620 |  |  | — |  |  | 3,741 |
Other comprehensive loss | 4,972 |  |  | 210 |  |  | (48,364 | ) |  | (43,182 | )
Balance at December 31, 2015 | (84,280 | ) |  | (988 | ) |  | (123,538 | ) |  | (208,806 | )
Other comprehensive loss before reclassifications | (1,991 | ) |  | 441 |  |  | (17,753 | ) |  | (19,303 | )
Amounts reclassified from accumulated other comprehensive loss | 3,166 |  |  | 1,087 |  |  | — |  |  | 4,253 |
Other comprehensive loss | 1,175 |  |  | 1,528 |  |  | (17,753 | ) |  | (15,050 | )
Balance at December 31, 2016 | $ | (83,105 | ) |  | $ | 540 |  |  | $ | (141,291 | ) |  | $ | (223,856 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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