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Weighted Average Common Shares | 9 Months Ended
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Sep. 30, 2019
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):
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Weighted average common shares for basic earnings per share |  | 237,608 |  |  | 237,511 |  |  | 237,585 |  |  | 237,492 |
Effect of dilutive securities: unvested share awards |  | — |  |  | 51 |  |  | — |  |  | 34 |
Weighted average common shares for diluted earnings per share (1) |  | 237,608 |  |  | 237,562 |  |  | 237,585 |  |  | 237,526 |
(1) For the three and nine months ended September 30, 2019, 42 and 26, 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 The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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