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Weighted Average Common Shares (Tables) | 6 Months Ended
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Jun. 30, 2019
Earnings Per Share [Abstract] |
Schedule of weighted average number of shares | The following table provides a reconciliation of the weighted average number of common shares used in the calculation of basic and diluted earnings per share (in thousands):
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Weighted average common shares for basic earnings per share |  | 237,580 |  |  | 237,487 |  |  | 237,574 |  |  | 237,483 |
Effect of dilutive securities: unvested share awards |  | — |  |  | 42 |  |  | — |  |  | 23 |
Weighted average common shares for diluted earnings per share (1) |  | 237,580 |  |  | 237,529 |  |  | 237,574 |  |  | 237,506 |
(1) For the three and six months ended June 30, 2019, 68 and 18, respectively, of unvested common shares were not included in the calculation of diluted earnings per share because to do so would have been antidilutive.

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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://fasb.org/us-gaap/role/ref/legacyRef -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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