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) |