Condensed Consolidated Statements of Loss and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (20,418)	$ (13,579)
Other comprehensive income (loss);
Unrealized gain on fair value of investments	163	28
Unrealized loss on currency translation		(1)
Comprehensive loss	$ (20,255)	$ (13,552)

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

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