Common Stock (Tables)

3 Months Ended

Mar. 31, 2017

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, 2017 is as follows:

Shares issued at December 31, 2016	59,684,669
Issued as restricted stock award grants	80,783
Issued upon exercise of stock options	5,000
Shares issued at March 31, 2017	59,770,452