CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (9,355)	$ (3,137)	$ (18,347)	$ (11,349)
Foreign currency translation adjustments related to continuing operations	(47)	207	(59)	155
Comprehensive loss	$ (9,402)	$ (2,930)	$ (18,406)	$ (11,194)

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

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