UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (6,546)	$ (9,561)	$ (14,846)	$ (73,528)
Other comprehensive (loss) income:
Foreign currency translation adjustment	(17)	(7)	32	(130)
Comprehensive loss	$ (6,563)	$ (9,568)	$ (14,814)	$ (73,658)

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

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