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Accumulated Other Comprehensive Loss (Tables) | 9 Months Ended
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Sep. 30, 2017
Equity [Abstract] |
Amounts Included in Accumulated Other Comprehensive 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 December 31, 2016 | $ | (83,105 | ) |  | $ | 540 |  |  | $ | (141,291 | ) |  | $ | (223,856 | )
Other comprehensive income before reclassifications | 172 |  |  | (429 | ) |  | 52,303 |  |  | 52,046 |
Amounts reclassified from accumulated other comprehensive loss | 1,644 |  |  | (97 | ) |  | — |  |  | 1,547 |
Other comprehensive income | 1,816 |  |  | (526 | ) |  | 52,303 |  |  | 53,593 |
Balance at September 30, 2017 | $ | (81,289 | ) |  | $ | 14 |  |  | $ | (88,988 | ) |  | $ | (170,263 | )

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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=84228862&loc=SL7669686-108580 + Details
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