CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (3,989)	$ (13,119)	$ (12,713)	$ (17,921)
Other comprehensive income loss, net of tax:
Foreign currency translation adjustment	148	(28)	295	(332)
Other comprehensive income loss	148	(28)	295	(332)
Comprehensive loss	$ (3,841)	$ (13,147)	$ (12,418)	$ (18,253)

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

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