Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Income and Comprehensive Income [Abstract]
Net loss	$ (20,603)	$ (16,628)	$ (52,091)	$ (33,285)
Other comprehensive (loss) income:
Foreign currency translation adjustment	(6,565)	(9)	(278)	2,289
Total other comprehensive (loss) income	(6,565)	(9)	(278)	2,289
Total comprehensive loss	$ (27,168)	$ (16,637)	$ (52,369)	$ (30,996)