Income Taxes - Components of the Net Deferred Tax Assets/Liabilities (Detail) - USD ($) $ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Deferred tax assets: | ||
| Federal and state net operating loss carryforwards | $ 97,575 | $ 74,278 |
| Research and development tax credits | 12,271 | 9,247 |
| Lease liabilities | 7,684 | 7,327 |
| Accruals and other | 3,184 | 3,354 |
| Amortization | 10,633 | 11,155 |
| Deferred revenue | 2,537 | 3,414 |
| Gross deferred tax assets | 133,884 | 108,775 |
| Valuation allowance | (127,007) | (101,781) |
| Net deferred tax assets | 6,877 | 6,994 |
| Deferred tax liabilities: | ||
| Other depreciation | (212) | (763) |
| Operating lease right-of-use assets | (6,665) | (6,231) |
| Deferred tax assets, net of allowance | $ 0 | $ 0 |