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Common Stock (Tables) | 3 Months Ended
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Mar. 31, 2018
Equity [Abstract] |
Schedule of reconciliation of changes in common shares issued | A reconciliation of changes in common shares issued during the three months ended March 31, 2018 is as follows:
Shares issued at December 31, 2017 | 60,622,986 |
Issued as restricted stock award grants | 538,305 |
Shares issued at March 31, 2018 | 61,161,291 |

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- Definition Tabular disclosure of the change in common stock outstanding. + References No definition available. + Details
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