Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
NET LOSS	$ (14,975)	$ (5,127)	$ (40,243)	$ (23,233)
OTHER COMPREHENSIVE INCOME (LOSS):
Foreign currency translation adjustments	13	(19)	26	57
Other comprehensive income (loss)	13	(19)	26	57
COMPREHENSIVE LOSS	$ (14,962)	$ (5,146)	$ (40,217)	$ (23,176)

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

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