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Accumulated Other Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2018
Equity [Abstract] |
Summary of Changes in Accumulated Other Comprehensive Loss by Component | Changes in accumulated other comprehensive loss by component for the three months ended March 31, 2018 and 2017 consisted of the following (in thousands):
|  | Minimum Pension Liability |  |  | Other-Than- Temporary Impairment of Investment |  |  | Total |
Balance, December 31, 2017 |  | $ | (20,149 | ) |  | $ | (6,543 | ) |  | $ | (26,692 | )
Unrealized gains (losses) arising during period |  |  | — |  |  |  | — |  |  |  | — |
Amounts reclassified from accumulated other comprehensive loss |  |  | (9 | ) |  |  | 83 |  |  |  | 74 |
Income tax benefit |  |  | 4 |  |  |  | — |  |  |  | 4 |
Net other comprehensive income (loss) |  |  | (5 | ) |  |  | 83 |  |  |  | 78 |
Balance, March 31, 2018 |  | $ | (20,154 | ) |  | $ | (6,460 | ) |  | $ | (26,614 | )
|  | Minimum Pension Liability |  |  | Other-Than- Temporary Impairment of Investment |  |  | Total |
Balance, December 31, 2016 |  | $ | (22,268 | ) |  | $ | — |  |  | $ | (22,268 | )
Unrealized gains arising during period |  |  | — |  |  |  | — |  |  |  | — |
Amounts reclassified from accumulated other comprehensive loss |  |  | 11 |  |  |  | — |  |  |  | 11 |
Income tax expense |  |  | — |  |  |  | — |  |  |  | — |
Net other comprehensive income |  |  | 11 |  |  |  | — |  |  |  | 11 |
Balance, March 31, 2017 |  | $ | (22,257 | ) |  | $ | — |  |  | $ | (22,257 | )

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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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