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Weighted Average Common Shares (Tables) | 12 Months Ended
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Dec. 31, 2021
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):
| Year Ended December 31,
| 2021 |  | 2020 |  | 2019
Weighted average common shares for basic earnings per share | 237,967 |  |  | 237,739 |  |  | 237,604 |
Effect of dilutive securities: restricted share awards | — |  |  | — |  |  | — |
Weighted average common shares for diluted earnings per share (1) | 237,967 |  |  | 237,739 |  |  | 237,604 |
(1) For the years ended December 31, 2021, 2020 and 2019, 60, 223 and 36, respectively, of our 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=124432515&loc=d3e3550-109257 + Details
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