v3.8.0.1
Consolidated Statements of Comprehensive Loss - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Statement of Comprehensive Income [Abstract]        
Net loss $ (6,612) $ (9,712) $ (19,504) $ (29,647)
Unrealized gain (loss) on available-for-sale investments, net of tax 29 (18) 22 63
Comprehensive loss $ (6,583) $ (9,730) $ (19,482) $ (29,584)