Annual report pursuant to Section 13 and 15(d)

Income Taxes - Components of Approximate Deferred Tax (Detail)

v3.6.0.2
Income Taxes - Components of Approximate Deferred Tax (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Deferred tax assets:    
Net operating loss carryforwards $ 32,273 $ 25,085
Accruals and reserves 1,829 1,100
Non-qualified stock options 3,882 3,357
Research and development tax credits 1,331 989
Derivative warrant liability 26 26
Investment in joint venture 250 251
Goodwill 0 283
Fixed assets 0 78
Other 8 6
Total deferred tax assets 39,599 31,175
Less valuation allowance (38,634) (31,175)
Net deferred tax assets 965 0
Deferred tax liabilities    
Fixed assets (401) 0
Goodwill and intangible assets (564) 0
Net deferred taxes $ 0 $ 0