Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Comprehensive Loss

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Condensed Consolidated Statements of Comprehensive Loss - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]    
Net loss $ (16,632) $ (16,494)
Change in unrealized gain (loss) on available-for-sale securities, net of tax (112) 83
Comprehensive loss $ (16,744) $ (16,411)