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Per Share Information (Tables) | 9 Months Ended
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Sep. 30, 2017
Earnings Per Share [Abstract] |
Basic and Diluted Earnings Per Share Attributable to Common Stock | The amounts used to compute the basic and diluted earnings per share attributable to common stock for the three and nine months ended September 30, 2017 and 2016 are illustrated below (in thousands):
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Amounts attributable to common stock: |  |  |  |  |  |  |  |  |
Net income from continuing operations | $ | 89,313 |  |  | $ | 73,137 |  |  | $ | 201,417 |  |  | $ | 110,195 |
Net income from discontinued operations | — |  |  | 605 |  |  | — |  |  | 605 |
Net income attributable to common stock | $ | 89,313 |  |  | $ | 73,742 |  |  | $ | 201,417 |  |  | $ | 110,800 |
Weighted average shares: |  |  |  |  |  |  |  |  |
Weighted average shares outstanding for basic earnings per share attributable to common stock | 157,484 |  |  | 155,024 |  |  | 155,796 |  |  | 158,090 |
Effect of dilutive unvested non-participating stock-based awards | 1,136 |  |  | — |  |  | 997 |  |  | — |
Weighted average shares outstanding for diluted earnings per share attributable to common stock | 158,620 |  |  | 155,024 |  |  | 156,793 |  |  | 158,090 |

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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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