Income Taxes - Narrative (Detail) - USD ($) $ in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Federal | ||
| Income Tax Examination [Line Items] | ||
| Net operating loss (NOL) carryforwards | $ 492.1 | |
| Tax credit carryforwards | 5.1 | $ 3.7 |
| State | ||
| Income Tax Examination [Line Items] | ||
| Net operating loss (NOL) carryforwards | 188.6 | |
| Tax credit carryforwards | $ 2.3 | $ 2.1 |