Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (481)	$ 3,727	$ (946)	$ 6,078
Other comprehensive loss, net of tax:
Foreign currency translation adjustments	(367)	(175)	(965)	(89)
Other comprehensive loss	(367)	(175)	(965)	(89)
Comprehensive loss	$ (848)	$ 3,552	$ (1,911)	$ 5,989