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Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2018
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, 2016 | $ | (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 | )
Other comprehensive income before reclassifications | (8,486 | ) |  | (527 | ) |  | 63,874 |  |  | 54,861 |
Amounts reclassified from accumulated other comprehensive loss | 2,193 |  |  | (86 | ) |  | — |  |  | 2,107 |
Other comprehensive income | (6,293 | ) |  | (613 | ) |  | 63,874 |  |  | 56,968 |
Adoption of accounting standards update related to reclassification of certain tax effects | (15,424 | ) |  | (16 | ) |  | (6,645 | ) |  | (22,085 | )
Balance at December 31, 2017 | (104,822 | ) |  | (89 | ) |  | (84,062 | ) |  | (188,973 | )
Other comprehensive loss before reclassifications | (53,797 | ) |  | (766 | ) |  | (33,679 | ) |  | (88,242 | )
Amounts reclassified from accumulated other comprehensive loss | 4,153 |  |  | (153 | ) |  | 4,407 |  |  | 8,407 |
Other comprehensive loss | (49,644 | ) |  | (919 | ) |  | (29,272 | ) |  | (79,835 | )
Balance at December 31, 2018 | $ | (154,466 | ) |  | $ | (1,008 | ) |  | $ | (113,334 | ) |  | $ | (268,808 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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