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Earnings per Share and Unit | 12 Months Ended
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Dec. 31, 2016
Earnings per Share and Unit [Abstract] |
Earnings per Share and Unit | Earnings per Share and Unit Parent Company Earnings per Share The following summarizes the calculation of basic and diluted earnings per share:
|  | Year ended December 31,
(in thousands, except per share data) |  | 2016 |  | 2015 |  | 2014
Numerator: |  |  |  |  |  |
Income from operations attributable to common stockholders - basic |  | $ | 143,860 |  |  | 128,994 |  |  | 165,875 |
Income from operations attributable to common stockholders - diluted |  | $ | 143,860 |  |  | 128,994 |  |  | 165,938 |
Denominator: |  |  |  |  |  |
Weighted average common shares outstanding for basic EPS |  | 100,863 |  |  | 94,391 |  |  | 92,370 |
Weighted average common shares outstanding for diluted EPS (1) |  | 101,285 |  |  | 94,856 |  |  | 92,404 |
Income per common share – basic |  | $ | 1.43 |  |  | 1.37 |  |  | 1.80 |
Income per common share – diluted |  | $ | 1.42 |  |  | 1.36 |  |  | 1.80 |
(1) Includes the dilutive impact of unvested restricted stock and shares issuable under the forward equity offering using the treasury stock method. Income allocated to noncontrolling interests of the Operating Partnership has been excluded from the numerator and exchangeable Operating Partnership units have been omitted from the denominator for the purpose of computing diluted earnings per share since the effect of including these amounts in the numerator and denominator would have no impact. Weighted average exchangeable Operating Partnership units outstanding for the years ended December 31, 2016 and 2015 were 154,170, and for the year ended December 31, 2014 was 157,950. Operating Partnership Earnings per Unit The following summarizes the calculation of basic and diluted earnings per unit:
|  | Year ended December 31,
(in thousands, except per share data) |  | 2016 |  | 2015 |  | 2014
Numerator: |  |  |  |  |  |
Income from operations attributable to common unit holders - basic |  | $ | 144,117 |  |  | 129,234 |  |  | 166,194 |
Income from operations attributable to common unit holders - diluted |  | $ | 144,117 |  |  | 129,234 |  |  | 166,257 |
Denominator: |  |  |  |  |  |
Weighted average common units outstanding for basic EPU |  | 101,017 |  |  | 94,546 |  |  | 92,528 |
Weighted average common units outstanding for diluted EPU (1) |  | 101,439 |  |  | 95,011 |  |  | 92,562 |
Income per common unit – basic |  | $ | 1.43 |  |  | 1.37 |  |  | 1.80 |
Income per common unit – diluted |  | $ | 1.42 |  |  | 1.36 |  |  | 1.80 |
(1) Includes the dilutive impact of unvested restricted stock and forward equity offering using the treasury stock method.

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- Definition Earnings Per Share and Unit [Abstract] + References No definition available. + Details
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- Definition This element may be used to capture the complete disclosure pertaining to an entity's earnings per share. + References No definition available. + Details
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Data Type: | nonnum:textBlockItemType
Balance Type: | na
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