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
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (11,842)	$ (7,840)	$ 2,448	$ (11,286)
Other comprehensive income (loss), net of tax
Changes in cumulative translation adjustment	26	(4)	35	(2)
Comprehensive (loss) income	$ (11,816)	$ (7,844)	$ 2,483	$ (11,288)