CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Statement of Comprehensive Income [Abstract]        
Net loss $ (7,910) $ (10,215) $ (29,193) $ (30,722)
Other comprehensive (loss) income:        
Foreign currency translation adjustment (608) (951) (2,803) 719
Other comprehensive (loss) income (608) (951) (2,803) 719
Comprehensive loss $ (8,518) $ (11,166) $ (31,996) $ (30,003)