Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Loss Per Common Share (Details)

v3.8.0.1
Loss Per Common Share (Details) - shares
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Earnings per share [abstract]      
Weighted average number of common shares outstanding 132,395,752 119,880,200 112,613,845