Income Taxes - Schedule of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns Roll Forward (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Income Tax Disclosure [Abstract] | ||
| Balance | $ 674 | $ 648 |
| Additions based on tax positions | 35 | 26 |
| Additions for tax positions of prior years | 0 | 0 |
| Balance | $ 709 | $ 674 |