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
Statement of Comprehensive Income [Abstract]
Net loss	$ (22,361)	$ (18,402)	$ (34,946)	$ (31,278)
Other comprehensive (loss) income:
Unrealized gain on hedging activity, net of tax of $238 and $832, respectively		843		2,970
Recognition of gain on hedging activity reclassified to net loss, net of tax of $78 and $157, respectively	(278)		(556)
Foreign currency translation adjustments	7,223	(16,064)	2,920	(13,035)
Comprehensive loss	$ (15,416)	$ (33,623)	$ (32,582)	$ (41,343)