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Accumulated Other Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2020
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, 2019 | $ | (139,102) |  |  | $ | (3,182) |  |  | $ | (117,458) |  |  | $ | (259,742) |
Other comprehensive loss before reclassifications | (872) |  |  | (2,844) |  |  | (36,439) |  |  | (40,155) |
Amounts reclassified from accumulated other comprehensive loss | 1,811 |  |  | 389 |  |  | — |  |  | 2,200 |
Other comprehensive loss | 939 |  |  | (2,455) |  |  | (36,439) |  |  | (37,955) |
Balance at March 31, 2020 | $ | (138,163) |  |  | $ | (5,637) |  |  | $ | (153,897) |  |  | $ | (297,697) |

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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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