Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Condensed Consolidated Statements of Comprehensive Loss
Net (loss) income	$ (8,965)	$ 24,467	$ (18,983)	$ 12,558
Other comprehensive income (loss), net of tax:
Change in foreign currency translation adjustment	45	(3)	59	(2)
Comprehensive (loss) income	$ (8,920)	$ 24,464	$ (18,924)	$ 12,556