Common Stock (Tables)

3 Months Ended

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