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Segment Reporting - Additional Information (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) Segment | Dec. 31, 2023 USD ($)
Segment Reporting Information [Line Items] |  |
Number of operating business segment | Segment | 1 |
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] | srt:ChiefExecutiveOfficerMember |
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description | The CODM assesses the performance of the Company and decides how to allocate resources based upon net loss that is also reported within the Consolidated Statements of Operations. The measure of segment assets that is reviewed by the CODM is reported within the Consolidated Balance Sheet as total assets. |
Severance expense | $ | $ 0.0 | $ 7.9
Revenue | UCB | Customer Concentration Risk |  |
Segment Reporting Information [Line Items] |  |
Percentage revenue from customers | 39.00% | 40.00%
Revenue | Baxalta Incorporated Or Takeda P L C | Customer Concentration Risk |  |
Segment Reporting Information [Line Items] |  |
Percentage revenue from customers | 18.00% | 21.00%
Revenue | Astra Zeneca Ab | Customer Concentration Risk |  |
Segment Reporting Information [Line Items] |  |
Percentage revenue from customers | 17.00% | 11.00%
Revenue | Pfizer | Customer Concentration Risk |  |
Segment Reporting Information [Line Items] |  |
Percentage revenue from customers | 12.00% | 10.00%
Revenue | Roche | Customer Concentration Risk |  |
Segment Reporting Information [Line Items] |  |
Percentage revenue from customers | 10.00% |

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