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Earnings (Loss) Per Share (Tables) | 9 Months Ended
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Sep. 30, 2017
Reconciliation of Weighted Average Shares Used in Computation of Earnings (Loss) Per Share | The following table is a reconciliation of the weighted average shares used in the computation of earnings (loss) per share for the periods presented (in thousands, except per share data):
|  | Three Months Ended September 30, |
|  | 2017 |  |  | 2016 |
|  | Income (Loss) |  |  | Weighted Average Shares |  |  | Per-Share |  |  | Income (Loss) |  |  | Weighted Average Shares |  |  | Per-Share |
Earnings (loss) per share — basic |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholders |  | $ | (17,614 | ) |  |  | 22,772 |  |  | $ | (0.77 | ) |  | $ | 30,612 |  |  |  | 16,044 |  |  | $ | 1.91 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible senior notes |  |  | — |  |  |  | — |  |  |  |  |  |  |  | 1,840 |  |  |  | 23,081 |  |  |  |  |
Unvested performance stock grants |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | 164 |  |  |  |  |
Unvested restricted stock grants |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | 215 |  |  |  |  |
Earnings (loss) per share — diluted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholders plus assumed exercises and conversion |  | $ | (17,614 | ) |  |  | 22,772 |  |  | $ | (0.77 | ) |  | $ | 32,452 |  |  |  | 39,504 |  |  | $ | 0.82 |
|  | Nine Months Ended September 30, |
|  | 2017 |  |  | 2016 |
|  | Income (Loss) |  |  | Weighted Average Shares |  |  | Per-Share |  |  | Income (Loss) |  |  | Weighted Average Shares |  |  | Per-Share |
Earnings (loss) per share — basic |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholders |  | $ | (52,672 | ) |  |  | 20,848 |  |  | $ | (2.53 | ) |  | $ | 8,828 |  |  |  | 16,561 |  |  | $ | 0.53 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible senior notes |  |  | — |  |  |  | — |  |  |  |  |  |  |  | 5,557 |  |  |  | 23,123 |  |  |  |  |
Unvested performance stock grants |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | 115 |  |  |  |  |
Unvested restricted stock grants |  |  | — |  |  |  | — |  |  |  |  |  |  |  | — |  |  |  | 117 |  |  |  |  |
Earnings (loss) per share — diluted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) available to common stockholders plus assumed exercises and conversion |  | $ | (52,672 | ) |  |  | 20,848 |  |  | $ | (2.53 | ) |  | $ | 14,385 |  |  |  | 39,916 |  |  | $ | 0.36 |

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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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