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Selected Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Financial Data | The following table summarizes quarterly financial data for the years ended December 31, 2017 and 2016:
|  | 2017
|  | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
|  | (In thousands)
Revenues |  | $ | 333,004 |  |  | $ | 323,953 |  |  | $ | 265,498 |  |  | $ | 397,848 |
Income from operations |  | 181,683 |  |  | 143,175 |  |  | 50,483 |  |  | 173,025 |
Income tax expense (benefit) |  | — |  |  | — |  |  | 2,763 |  |  | (954 | )
Net income |  | 154,455 |  |  | 105,936 |  |  | 18,235 |  |  | 156,526 |
Income per share: |  |  |  |  |  |  |  |
Basic |  | $ | 0.91 |  |  | $ | 0.58 |  |  | $ | 0.10 |  |  | $ | 0.85 |
Diluted |  | $ | 0.91 |  |  | $ | 0.58 |  |  | $ | 0.10 |  |  | $ | 0.85 |
|  | 2016
|  | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
|  | (In thousands)
Revenues |  | $ | 156,961 |  |  | $ | (28,158 | ) |  | $ | 193,691 |  |  | $ | 63,416 |
Loss from operations |  | (195,794 | ) |  | (323,412 | ) |  | (157,995 | ) |  | (190,949 | )
Income tax (benefit) expense |  | (191 | ) |  | (157 | ) |  | (3,407 | ) |  | 842 |
Net loss |  | (242,267 | ) |  | (339,776 | ) |  | (157,296 | ) |  | (240,370 | )
Loss per share: |  |  |  |  |  |  |  |
Basic |  | $ | (2.17 | ) |  | $ | (2.71 | ) |  | $ | (1.25 | ) |  | $ | (1.86 | )
Diluted |  | $ | (2.17 | ) |  | $ | (2.71 | ) |  | $ | (1.25 | ) |  | $ | (1.86 | )

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- References No definition available. + Details
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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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