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v3.21.1

Nature of Operations and Liquidity - Additional Information (Detail) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 USD ($) Segment | Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($)
Accounting Policies [Abstract] |  |  |
Number of operating segment | Segment | 1 |  |
Net loss | $ 22,438 | $ 4,053 |
Accumulated deficit | 337,199 |  | $ 314,761
Cash, cash equivalents and short-term investments | $ 107,000 |  |

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