CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (6,505)	$ (23,971)	$ 2,567
Change in cumulative foreign currency translation adjustment	(1,049)	(13,869)	(22,612)
Total comprehensive loss	$ (7,554)	$ (37,840)	$ (20,045)