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Net Income (Loss) Per Share (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Summary of Net Income (Loss) Per Share |
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Loss from continuing operations |  | $ | (13,784 | ) |  | $ | (3,480 | ) |  | $ | (44,277 | ) |  | $ | (27,961 | )
Income from discontinued operations, net of tax (Note 2) |  | — |  |  | 129,441 |  |  | — |  |  | 140,195 |
Net income (loss) |  | $ | (13,784 | ) |  | $ | 125,961 |  |  | $ | (44,277 | ) |  | $ | 112,234 |
Weighted average shares outstanding |  | 28,688 |  |  | 27,544 |  |  | 27,784 |  |  | 27,403 |
Effect of dilutive stock options |  | — |  |  | — |  |  | — |  |  | — |
Diluted shares outstanding |  | 28,688 |  |  | 27,544 |  |  | 27,784 |  |  | 27,403 |
Basic loss from continuing operations per share |  | $ | (0.48 | ) |  | $ | (0.13 | ) |  | $ | (1.59 | ) |  | $ | (1.02 | )
Basic income from discontinued operations per share |  | — |  |  | 4.70 |  |  | — |  |  | 5.12 |
Basic net loss per share |  | $ | (0.48 | ) |  | $ | 4.57 |  |  | $ | (1.59 | ) |  | $ | 4.10 |
Diluted loss from continuing operations per share |  | $ | (0.48 | ) |  | $ | (0.13 | ) |  | $ | (1.59 | ) |  | $ | (1.02 | )
Diluted income from discontinued operations per share |  | — |  |  | 4.70 |  |  | — |  |  | 5.12 |
Diluted net loss per share |  | $ | (0.48 | ) |  | $ | 4.57 |  |  | $ | (1.59 | ) |  | $ | 4.10 |
Cash dividends declared per common share |  | $ | 0.07 |  |  | $ | 0.07 |  |  | $ | 0.21 |  |  | $ | 0.21 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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