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Company Organization and Nature of Business - Additional Information (Details) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 15, 2020 shares | Jun. 05, 2020 | Jun. 30, 2020 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) shares | Dec. 31, 2020 USD ($) shares | Jun. 17, 2020 shares
Schedule Of Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |  |  |  |
Reverse stock split |  | one-for-1.6870 |  |  |  |
Reverse stock split, conversion ratio |  | 0.593 |  |  |  |
Net proceeds from initial public offering | $ |  |  | $ 264,000 |  |  |
Underwriting discounts and commissions | $ |  |  | 20,100 |  |  |
Offering expenses | $ |  |  | $ 3,400 |  | $ 3,368 |
Redeemable Convertible Preferred Stock |  |  |  |  |  |
Schedule Of Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |  |  |  |
Conversion of preferred stock (in shares) |  |  | 28,610,337 |  |  |
Redeemable convertible preferred stock, shares outstanding |  |  |  | 0 |  | 0
Common Stock |  |  |  |  |  |
Schedule Of Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |  |  |  |
Conversion of preferred stock (in shares) | 28,610,337 |  |  |  | 28,610,337 |
Initial Public Offering |  |  |  |  |  |
Schedule Of Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |  |  |  |
Common stock shares sold |  |  | 17,968,750 |  |  |
Underwriters' option to purchase additional shares |  |  | 2,343,750 |  |  |
Public offering price per share | $ / shares |  |  | $ 16.00 |  |  |
Initial Public Offering | Common Stock |  |  |  |  |  |
Schedule Of Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |  |  |  |
Common stock shares sold |  |  |  |  | 17,968,750 |
Pneumococcal Conjugate Vaccine |  |  |  |  |  |
Schedule Of Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |  |  |  |
Global target revenue | $ |  |  |  | $ 7,000,000 |  |

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