Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (12,307)	$ (4,250)	$ (25,506)	$ (12,641)
Foreign currency translation adjustment	(1,293)	253	(681)	(2,427)
Unrealized translation loss on foreign currency denominated intercompany loans	(3,610)	0	(3,610)	0
Unrealized loss on interest rate swap	(3,379)	0	(3,379)	0
Comprehensive loss	$ (20,589)	$ (3,997)	$ (33,176)	$ (15,068)