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Basis of Presentation - Additional Information (Details) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Oct. 29, 2019 USD ($) $ / shares shares | Oct. 16, 2019 $ / shares | Nov. 30, 2019 USD ($) shares | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Basis Of Presentation [Line Items] |  |  |  |  |
Reverse stock split description |  |  |  | 1-for-1.5 reverse split |
Reverse stock split ratio |  | 0.67 |  |  |
Common stock, par value | $ / shares |  | $ 0.00001 |  |  |
Cash and cash equivalents | $ |  |  |  | $ 136,204 | $ 33,017
Accumulated deficit | $ |  |  |  | $ (32,959) | $ (12,452)
Initial Public Offering |  |  |  |  |
Basis Of Presentation [Line Items] |  |  |  |  |
Issuance of common stock, shares | shares | 6,800,000 |  |  |  |
Common stock issued, per share | $ / shares | $ 11.00 |  |  |  |
Net proceeds from initial public offering | $ | $ 66,156 |  | $ 4,864 |  |
Conversion of convertible preferred stock to common stock | shares | 12,904,534 |  |  |  |
Number of additional common stock purchased by underwriters upon partial exercise of option | shares |  |  | 475,501 |  |

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