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Weighted Average Common Shares | 9 Months Ended
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Sep. 30, 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 September 30, |  | Nine Months Ended September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Weighted average common shares for basic earnings per share |  | 237,511 |  |  | 237,421 |  |  | 237,492 |  |  | 237,404 |
Effect of dilutive securities: unvested share awards |  | 51 |  |  | 39 |  |  | 34 |  |  | 41 |
Weighted average common shares for diluted earnings per share |  | 237,562 |  |  | 237,460 |  |  | 237,526 |  |  | 237,445 |

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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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