Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Consolidated Statements of Comprehensive Loss (Unaudited) [Abstract]
Net loss	$ (15,767)	$ (3,329)	$ (31,110)	$ (6,199)
Other comprehensive loss
Net unrealized loss on investments	(89)	0	(79)	0
Total comprehensive loss	$ (15,856)	$ (3,329)	$ (31,189)	$ (6,199)

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

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