UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Other Comprehensive Income (Loss), Tax [Abstract]
Net loss	$ (13,018)	$ (12,236)
Other comprehensive (loss) income, net of tax:
Foreign currency translation (loss) gain	(161)	249
Net other comprehensive income (loss), net of ($18) and ($59) tax, respectively	374	(238)
Total other comprehensive income, net of tax	213	11
Total comprehensive loss	$ (12,805)	$ (12,225)