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Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended
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Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Accumulated Balances Related to Each Component of Accumulated Other Comprehensive Income (Loss) | The changes in accumulated other comprehensive loss by component for the six months ended June 30, 2018 and 2017 were as follows:
(Dollars and accompanying footnotes in thousands) | Foreign currency translation adjustments |  | Funded status of pension plans and other postretirement benefits(1) |  | Unrealized gain (loss) on derivative instruments (2) |  | Total
Beginning Balance December 31, 2017 | $ | (17,983 | ) |  | $ | (47,198 | ) |  | $ | 26 |  |  | $ | (65,155 | )
Other comprehensive income (loss) before reclassifications | (8,293 | ) |  | — |  |  | 1,097 |  |  | (7,196 | )
Amounts reclassified from accumulated other comprehensive loss | — |  |  | 87 |  |  | — |  |  | 87 |
Net current-period other comprehensive income (loss) | (8,293 | ) |  | 87 |  |  | 1,097 |  |  | (7,109 | )
Ending Balance June 30, 2018 | $ | (26,276 | ) |  | $ | (47,111 | ) |  | $ | 1,123 |  |  | $ | (72,264 | )
Beginning Balance December 31, 2016 | $ | (46,446 | ) |  | $ | (45,816 | ) |  | $ | — |  |  | $ | (92,262 | )
Other comprehensive income (loss) before reclassifications | 16,730 |  |  | — |  |  | (435 | ) |  | 16,295 |
Actuarial net gain incurred in the fiscal year | — |  |  | 334 |  |  | — |  |  | 334 |
Amounts reclassified from accumulated other comprehensive loss | — |  |  | 36 |  |  | 107 |  |  | 143 |
Net current-period other comprehensive income (loss) | 16,730 |  |  | 370 |  |  | (328 | ) |  | 16,772 |
Ending Balance June 30, 2017 | $ | (29,716 | ) |  | $ | (45,446 | ) |  | $ | (328 | ) |  | $ | (75,490 | )
(1) Net of taxes of $9,536 and $9,563 as of June 30, 2018 and December 31, 2017, respectively. Net of taxes of $8,961 and $9,160 as of June 30, 2017 and December 31, 2016, respectively. (2) Net of taxes of $316 and $15 as of June 30, 2018 and December 31, 2017, respectively. Net of taxes of $187 and $0 as of June 30, 2017 and December 31, 2016, respectively.

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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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