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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2015
Earnings Per Share [Abstract] |
Schedule of earnings (loss) per share, basic and diluted | The following is a reconciliation of the calculation of basic and diluted earnings per share (in thousands, except share and per share data):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Numerator: |  |  |  |  |  |  |
Net income | $ | 24,822 |  |  | $ | 51,916 |  |  | $ | 35,464 |  |  | $ | 55,953 |
Denominator: |  |  |  |  |  |  |
Weighted-average number of common shares outstanding—basic | 200,830,064 |  |  | 195,776,924 |  |  | 200,738,301 |  |  | 195,700,864 |
Effect of dilutive securities: |  |  |  |  |  |  |
Unvested restricted common stock | 80,538 |  |  | 134,737 |  |  | 143,882 |  |  | 181,803 |
Unexercised stock appreciation rights | 1,425 |  |  | — |  |  | 2,212 |  |  | — |
Shares related to unvested PSUs | 230,720 |  |  | 335,057 |  |  | 230,720 |  |  | 335,057 |
Weighted-average number of common shares outstanding—diluted | 201,142,747 |  |  | 196,246,718 |  |  | 201,115,115 |  |  | 196,217,724 |
Earnings per share: |  |  |  |  |  |  |  |  |  |
Basic earnings per share | $ | 0.12 |  |  | $ | 0.27 |  |  | $ | 0.18 |  |  | $ | 0.29 |
Diluted earnings per share | $ | 0.12 |  |  | $ | 0.26 |  |  | $ | 0.18 |  |  | $ | 0.29 |

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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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