Annual report pursuant to Section 13 and 15(d)

Income Taxes - Components of Deferred Tax Assets (Detail)

v3.10.0.1
Income Taxes - Components of Deferred Tax Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Deferred tax assets:    
Federal and state net operating loss carryforwards $ 85,571 $ 63,935
Capitalized research and development 10,466 9,455
Federal and state tax credit carryforwards 18,590 13,529
Stock based compensation 2,848 1,493
Other 1,499 438
Total deferred tax assets 118,974 88,850
Deferred tax liabilities:    
Fixed assets (622)  
Total deferred tax liabilities (622)  
Valuation allowance (118,352) (88,850)
Net deferred tax assets $ 0 $ 0