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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2017
Equity [Abstract] |
Changes in accumulated other comprehensive income (loss) by component, net of tax | Changes in accumulated other comprehensive income (loss) by component, net of tax, were as follows:
(In thousands) | Postretirement Benefits
Balance at December 31, 2014 | $ | (2,151 | )
Other comprehensive income (loss) before reclassifications | 1,786 |
Net current-period other comprehensive income (loss) | 1,786 |
Balance at December 31, 2015 | $ | (365 | )
Other comprehensive income (loss) before reclassifications | 1,280 |
Amounts reclassified from accumulated other comprehensive income (loss) | 70 |
Net current-period other comprehensive income | 1,350 |
Balance at December 31, 2016 | $ | 985 |
Other comprehensive income (loss) before reclassifications | 2,815 |
Amounts reclassified from accumulated other comprehensive income (loss) | (1,723 | )
Net current-period other comprehensive income | 1,092 |
Balance at December 31, 2017 | $ | 2,077 |
Schedule of amount reclassified from accumulated other comprehensive income (loss) into the Condensed Consolidated Statement of Operations | Amounts reclassified from accumulated other comprehensive income (loss) into the Consolidated Statement of Operations were as follows:
| Year Ended December 31, |  | Affected Line Item in the Consolidated Statement of Operations
(In thousands) | 2017 |  | 2016 |  | 2015 |
Postretirement benefits |  |  |  |  |  |  |  |  |  |
Amortization of prior service cost | 2,733 |  |  | (111 | ) |  | — |  |  | General and administrative expense
Total before tax | 2,733 |  |  | (111 | ) |  | — |  |  | Income (loss) before income taxes
| (1,010 | ) |  | 41 |  |  | — |  |  | Income tax benefit (expense)
Total reclassifications for the period | $ | 1,723 |  |  | $ | (70 | ) |  | $ | — |  |  | Net income (loss)

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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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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