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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2016
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | A reconciliation of the numerators and denominators of the basic and diluted EPS computations is presented below:
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
| (In thousands, except per share amounts)
Amounts attributable to common stockholders: |  |  |  |  |  |  |
Net income: |  |  |  |  |  |  |
Net income — basic | $ | 15,620 |  |  | $ | 52,595 |  |  | $ | 63,065 |  |  | $ | 113,970 |
After tax interest on convertible debt | 10 |  |  | 12 |  |  | 22 |  |  | 25 |
Net income — diluted | $ | 15,630 |  |  | $ | 52,607 |  |  | $ | 63,087 |  |  | $ | 113,995 |
Weighted average shares (denominator): |  |  |  |  |  |  |
Weighted average shares — basic | 193,806 |  |  | 202,466 |  |  | 194,366 |  |  | 202,966 |
Stock options | 2,788 |  |  | 4,159 |  |  | 2,975 |  |  | 4,134 |
Restricted stock units | 3 |  |  | — |  |  | 1 |  |  | — |
Convertible debt | 121 |  |  | 121 |  |  | 121 |  |  | 121 |
Weighted average shares — diluted | 196,718 |  |  | 206,746 |  |  | 197,463 |  |  | 207,221 |
Net income per share: |  |  |  |  |  |  |
Basic | $ | 0.08 |  |  | $ | 0.26 |  |  | $ | 0.32 |  |  | $ | 0.56 |
Diluted | $ | 0.08 |  |  | $ | 0.25 |  |  | $ | 0.32 |  |  | $ | 0.55 |

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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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