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Weighted Average Common Shares | 3 Months Ended
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Mar. 31, 2018
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 March 31,
|  | 2018 |  | 2017
Weighted average common shares for basic earnings per share |  | 237,478 |  |  | 237,391 |
Effect of dilutive securities: unvested share awards |  | 15 |  |  | 25 |
Weighted average common shares for diluted earnings per share |  | 237,493 |  |  | 237,416 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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