Intangibles - Components of Intangible Assets (Detail) - USD ($) $ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Finite Lived Intangible Assets [Line Items] | ||
| Intangible assets, Net Carrying Value | $ 1,641 | $ 1,864 |
| License Agreements [Member] | ||
| Finite Lived Intangible Assets [Line Items] | ||
| Intangible assets, Gross Carrying Value | 3,117 | 3,117 |
| Intangible assets, Accumulated Amortization | (1,476) | (1,253) |
| Intangible assets, Net Carrying Value | $ 1,641 | $ 1,864 |