Income Taxes - Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] | ||
| Balance at the beginning of the year | $ 1,465 | $ 2,413 |
| Adjustments related to prior year tax positions | 813 | |
| Adjustments related to prior year tax positions | (1,177) | |
| Increases related to current year tax positions | 401 | 229 |
| Decreases due to statute of limitation expiration | 0 | 0 |
| Balance at end of year | $ 2,679 | $ 1,465 |