Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Computation of Basic and Diluted Net Loss per Share (Detail)

v3.10.0.1
Summary of Significant Accounting Policies - Computation of Basic and Diluted Net Loss per Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Numerator:        
Net loss allocated to common stock-basic $ (17,531) $ (8,929) $ (34,536) $ (14,280)
Adjustments for revaluation of warrants (198)      
Net loss allocated to common stock-diluted $ (17,729) $ (8,929) $ (34,536) $ (14,280)
Denominator:        
Weighted average number of common stock shares outstanding - basic 58,833,647 28,752,451 56,307,236 27,687,110
Dilutive Securities:        
Common stock warrants 72,251      
Weighted average number of common stock shares outstanding - diluted 58,905,898 28,752,451 56,307,236 27,687,110
Net loss per share - basic: $ (0.30) $ (0.31) $ (0.61) $ (0.52)
Net loss per share - diluted: $ (0.30) $ (0.31) $ (0.61) $ (0.52)