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Net Income per Common Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share Reconciliation [Abstract] |
Schedule of reconciliation of the denominator of the basic net income per common share computation to the denominator of the diluted net income per common share computation | The following is a reconciliation of the denominator of the basic net income per common share computation to the denominator of the diluted net income per common share computation.
| Three months ended June 30, |  | Six months ended June 30,
| 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Weighted average shares used for the basic net income per share computation | 284,928,969 |  |  | 272,588,332 |  |  | 284,469,689 |  |  | 268,024,691 |
Incremental shares from share-based compensation | 126,265 |  |  | 194,133 |  |  | 137,625 |  |  | 228,142 |
Weighted average partnership common units convertible to common shares that were dilutive | 317,022 |  |  | 317,022 |  |  | 317,022 |  |  | 317,022 |
Weighted average shares used for diluted net income per share computation | 285,372,256 |  |  | 273,099,487 |  |  | 284,924,336 |  |  | 268,569,855 |
Unvested shares from share-based compensation that were anti-dilutive | 237,861 |  |  | 44,191 |  |  | 164,111 |  |  | 32,016 |
Weighted average partnership common units convertible to common shares that were anti-dilutive | 359,980 |  |  | 88,182 |  |  | 207,948 |  |  | 88,182 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + 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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