v3.20.1
Income Taxes - Components of Income Tax Provision (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Current tax provision:    
State $ (1) $ (1)
Foreign   (220)
Total (1) (221)
Deferred tax provision:    
Total provision for income taxes $ (1) $ (221)