Provision for Income Taxes - Schedule of Loss Before Provision for Income Taxes (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Income Taxes Disclosure [Line Items] | ||
| Loss before provision for income taxes | $ (47,800) | $ (63,530) |
| United States of America [Member] | ||
| Income Taxes Disclosure [Line Items] | ||
| Loss before provision for income taxes | (47,831) | (63,624) |
| Foreign [Member] | ||
| Income Taxes Disclosure [Line Items] | ||
| Loss before provision for income taxes | $ 31 | $ 94 |
| X | ||||||||||
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Income Taxes Disclosure [Line Items] No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|