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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share Reconciliation | The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share computations for each of the years in the three-year period ended December 31, 2017:
| 2017 |  | 2016 |  | 2015
BASIC |  |  |  |  |
Income from continuing operations attributable to common shareholders | $ | 79,067 |  |  | $ | 89,109 |  |  | $ | 103,418 |
Income from discontinued operations attributable to common shareholders | — |  |  | — |  |  | 1,682 |
Net income attributable to common shareholders | $ | 79,067 |  |  | $ | 89,109 |  |  | $ | 105,100 |
Weighted-average number of common shares outstanding | 237,758,408 |  |  | 233,633,058 |  |  | 233,455,056 |
Income per common share: |  |  |  |  |  |  |
Income from continuing operations | $ | 0.33 |  |  | $ | 0.38 |  |  | $ | 0.44 |
Income from discontinued operations | — |  |  | — |  |  | 0.01 |
Net income attributable to common shareholders | $ | 0.33 |  |  | $ | 0.38 |  |  | $ | 0.45 |
| 2017 |  | 2016 |  | 2015
DILUTED: |  |  |  |  |
Income from continuing operations attributable to common shareholders | $ | 79,067 |  |  | $ | 89,109 |  |  | $ | 103,418 |
Impact of assumed conversions | 147 |  |  | (159 | ) |  | — |
Income from continuing operations attributable to common shareholders | 79,214 |  |  | 88,950 |  |  | 103,418 |
Income from discontinued operations attributable to common shareholders | — |  |  | — |  |  | 1,682 |
Impact of assumed conversions: | — |  |  | — |  |  | — |
Income from discontinued operations attributable to common shareholders | — |  |  | — |  |  | 1,682 |
Net income attributable to common shareholders | $ | 79,214 |  |  | $ | 88,950 |  |  | $ | 105,100 |
Weighted-average common shares outstanding - basic | 237,758,408 |  |  | 233,633,058 |  |  | 233,455,056 |
Effect of dilutive securities: |  |  |  |  |
Share options | 86,285 |  |  | 230,352 |  |  | 296,719 |
Operating Partnership Units | 3,693,144 |  |  | 3,815,621 |  |  | — |
Weighted-average common shares outstanding - diluted | 241,537,837 |  |  | 237,679,031 |  |  | 233,751,775 |
Income per common share: |  |  |  |  |
Income from continuing operations | $ | 0.33 |  |  | $ | 0.37 |  |  | $ | 0.44 |
Income from discontinued operations | — |  |  | — |  |  | 0.01 |
Net income attributable to common shareholders | $ | 0.33 |  |  | $ | 0.37 |  |  | $ | 0.45 |

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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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