Annual report pursuant to Section 13 and 15(d)

Income Taxes - Components of Deferred Tax Assets (Detail)

v3.3.1.900
Income Taxes - Components of Deferred Tax Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Deferred tax assets:    
Federal and state net operating loss carryforwards $ 79,966 $ 71,153
Capitalized research and development 22,287 22,314
Federal and state tax credit carryforwards 7,571 7,083
Other 2,012 1,470
Total deferred tax assets 111,836 102,020
Valuation allowance (111,836) (102,020)
Net deferred tax assets $ 0 $ 0