v3.7.0.1
Consolidated Statements of Comprehensive 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 $ (3,873) $ (7,412) $ (12,892) $ (19,935)
Unrealized gain (loss) on available-for-sale investments, net of tax (1) 7 (7) 81
Comprehensive loss $ (3,874) $ (7,405) $ (12,899) $ (19,854)