Earnings (Loss) per Share - Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Basic and diluted loss per share
Net loss for the period	$ (20,217)	$ (13,342)
Weighted average number of shares outstanding	68,701,599	36,911,604
Basic and diluted loss per share	$ (0.29)	$ (0.36)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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