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Weighted Average Common Shares | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Weighted Average Common Shares | Weighted Average Common 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,
| 2020 |  | 2019 |  | 2018
Weighted average common shares for basic earnings per share | 237,739 |  |  | 237,604 |  |  | 237,511 |
Effect of dilutive securities: restricted share awards | — |  |  | — |  |  | 35 |
Weighted average common shares for diluted earnings per share (1) | 237,739 |  |  | 237,604 |  |  | 237,546 |
(1) For the years ended December 31, 2020 and 2019, 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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