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Accumulated Other Comprehensive Loss - Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Schedule of Reclassifciations Out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Income (loss) before income taxes |  | $ (2,292) | $ (5,570)
Income tax provision (benefit) |  | (310) | (2,535)
Net income (loss) |  | (1,982) | $ (3,035)
Reclassification out of Accumulated Other Comprehensive Income |  |  |
Schedule of Reclassifciations Out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Net income (loss) | [1] | (168) |
Reclassification out of Accumulated Other Comprehensive Income | Amortization of prior-service cost |  |  |
Schedule of Reclassifciations Out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Amortization of prior-service cost | [2],[3] | (228) |
Income (loss) before income taxes |  | (228) |
Income tax provision (benefit) |  | 60 |
Net income (loss) |  | $ (168) |
[1] | Amounts in parentheses indicate credits to profit/loss
[2] | All amounts are net of tax. Amounts in parentheses indicate debits
[3] | This accumulated other comprehensive loss component is included in the computation of net periodic benefit cost (see Note 6).

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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(10)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(15)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(8)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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