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Earnings per Share (Tables) | 6 Months Ended
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Jun. 30, 2015
Earnings Per Share [Abstract] |
Schedule of calculation of basic and diluted earnings per share | The following table sets forth the calculations of basic and diluted earnings per share:
| For the Three Months Ended June 30, |  | For the Six Months Ended June 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
| (in thousands, except per share amounts)
Net income (loss) | $ | (57,508 | ) |  | $ | 59,780 |  |  | $ | (110,566 | ) |  | $ | 125,387 |
Basic weighted-average common shares outstanding | 67,483 |  |  | 67,069 |  |  | 67,473 |  |  | 67,063 |
Add: dilutive effect of stock options, unvested RSUs, and contingent PSUs | — |  |  | 1,170 |  |  | — |  |  | 1,117 |
Diluted weighted-average common shares outstanding | 67,483 |  |  | 68,239 |  |  | 67,473 |  |  | 68,180 |
Basic net income (loss) per common share | $ | (0.85 | ) |  | $ | 0.89 |  |  | $ | (1.64 | ) |  | $ | 1.87 |
Diluted net income (loss) per common share | $ | (0.85 | ) |  | $ | 0.88 |  |  | $ | (1.64 | ) |  | $ | 1.84 |

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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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