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Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 01, 2021 | Jun. 30, 2021 | Sep. 30, 2021 | Dec. 31, 2020
Class of Stock [Line Items] |  |  |  |
Common stock, shares authorized (in shares) |  |  | 37,500,000 | 37,500,000
Common stock, par value (in usd per share) |  |  | $ 0.001 | $ 0.001
Number of shares of the combined company (in shares) | 500,000 |  | 500,000 |
Shares issued in asset acquisition | $ 3,800 | $ 3,795 | $ 3,800 |
RSUs | 2019 Long Term Incentive Plan |  |  |  |
Class of Stock [Line Items] |  |  |  |
Outstanding vested (in shares) |  |  | 294,642 |

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