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Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 2017
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 income (loss) by component for the three months ended March 31, 2017 and 2016 were as follows:
(Dollars 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, 2015 | $ | (41,365 | ) |  | $ | (47,082 | ) |  | $ | (11 | ) |  | $ | (88,458 | )
Other comprehensive income (loss) before reclassifications | 10,926 |  |  | — |  |  | 4 |  |  | 10,930 |
Amounts reclassified from accumulated other comprehensive income (loss) (3) | — |  |  | 35 |  |  | 2 |  |  | 37 |
Net current-period other comprehensive income (loss) | 10,926 |  |  | 35 |  |  | 6 |  |  | 10,967 |
Ending Balance March 31, 2016 | $ | (30,439 | ) |  | $ | (47,047 | ) |  | $ | (5 | ) |  | $ | (77,491 | )
Beginning Balance December 31, 2016 | $ | (46,446 | ) |  | $ | (45,816 | ) |  | $ | — |  |  | $ | (92,262 | )
Other comprehensive income (loss) before reclassifications | 4,138 |  |  | — |  |  | (114 | ) |  | 4,024 |
Amounts reclassified from accumulated other comprehensive income (loss) (4) | — |  |  | 30 |  |  | — |  |  | 30 |
Net current-period other comprehensive income (loss) | 4,138 |  |  | 30 |  |  | (114 | ) |  | 4,054 |
Ending Balance March 31, 2017 | $ | (42,308 | ) |  | $ | (45,786 | ) |  | $ | (114 | ) |  | $ | (88,208 | )
(1) Net of taxes of $9,144 and $9,160 as of March 31, 2017 and December 31, 2016, respectively. Net of taxes of $9,860 and $9,879 as of March 31, 2016 and December 31, 2015, respectively. (2) Net of taxes of $65 and $0 as of March 31, 2017 and December 31, 2016, respectively. Net of taxes of $3 and $5 as of March 31, 2016 and December 31, 2015, respectively. (3) Net of taxes of $19 and $1 for the pension plans and postretirement benefits and unrealized gain (loss) on derivatives, respectively. (4) Net of taxes of $14 for the pension plans and postretirement benefits.

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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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