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Earnings per Share (Tables) | 6 Months Ended
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Jun. 30, 2014
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,
| 2014 |  | 2013 |  | 2014 |  | 2013
| (in thousands, except per share amounts)
Net income | $ | 59,780 |  |  | $ | 76,522 |  |  | $ | 125,387 |  |  | $ | 93,249 |
Basic weighted-average common shares outstanding | 67,069 |  |  | 66,295 |  |  | 67,063 |  |  | 66,254 |
Add: dilutive effect of stock options, unvested RSUs, and contingent PSUs | 1,170 |  |  | 1,598 |  |  | 1,117 |  |  | 1,457 |
Diluted weighted-average common shares outstanding | 68,239 |  |  | 67,893 |  |  | 68,180 |  |  | 67,711 |
Basic net income per common share | $ | 0.89 |  |  | $ | 1.15 |  |  | $ | 1.87 |  |  | $ | 1.41 |
Diluted net income per common share | $ | 0.88 |  |  | $ | 1.13 |  |  | $ | 1.84 |  |  | $ | 1.38 |

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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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