UNAUDITED 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
Other Comprehensive Income (Loss), Tax [Abstract]
Net loss	$ (8,605)	$ (3,438)	$ (21,623)	$ (15,674)
Other comprehensive (loss) income, net of tax:
Foreign currency translation gain (loss)	62	(482)	(99)	(233)
Net other comprehensive income (loss), net of ($23), ($11), ($41) and ($70) tax, respectively	293	78	667	(160)
Total other comprehensive income (loss), net of tax	355	(404)	568	(393)
Total comprehensive loss	$ (8,250)	$ (3,842)	$ (21,055)	$ (16,067)