UNAUDITED 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
Other Comprehensive Income (Loss), Tax [Abstract]
Net loss	$ (8,864)	$ (15,771)	$ (30,487)	$ (31,445)
Other comprehensive (loss) income, net of tax:
Foreign currency translation gain (loss)	(210)	(60)	(309)	(293)
Net other comprehensive income (loss), net of ($5), ($18), ($46) and ($88) tax, respectively	86	68	753	(92)
Total other comprehensive income (loss), net of tax	(124)	8	444	(385)
Total comprehensive loss	$ (8,988)	$ (15,763)	$ (30,043)	$ (31,830)