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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2017
Earnings Per Share [Abstract] |
Computation of basic and diluted earnings per share | The following table sets forth the computation of basic and diluted earnings per share:
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2017 |  | 2016 |  | 2017 |  | 2016
Numerator: |  |  |  |  |  |  |  |
Net income (loss) |  | $ | 28,274 |  |  | $ | (1,412 | ) |  | $ | 76,158 |  |  | $ | 23,435 |
Denominator (in thousands): |  |  |  |  |  |  |  |
Weighted-average common shares for calculating basic earnings per share |  | 47,628 |  |  | 34,631 |  |  | 48,090 |  |  | 30,372 |
Effect of dilutive securities: |  |  |  |  |  |  |  |
Stock options and nonvested stock awards |  | 40 |  |  | — |  |  | 27 |  |  | — |
Weighted-average common shares for calculating diluted earnings per share |  | 47,668 |  |  | 34,631 |  |  | 48,117 |  |  | 30,372 |
Net income (loss) per share: |  |  |  |  |  |  |  |
Basic |  | $ | 0.59 |  |  | $ | (0.04 | ) |  | $ | 1.58 |  |  | $ | 0.77 |
Diluted |  | $ | 0.59 |  |  | $ | (0.04 | ) |  | $ | 1.58 |  |  | $ | 0.77 |

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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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