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Summary of Significant Accounting Policies - Narrative (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 USD ($) segment | Dec. 31, 2022 USD ($) | Sep. 30, 2023 USD ($) | Mar. 07, 2023 USD ($)
Business Acquisition [Line Items] |  |  |  |
Discount factor percentage |  | 12.00% |  |
Number of operating segments | segment | 1 |  |  |
Restricted cash and cash equivalents | $ 0 |  |  |
Impairment of long-lived assets | $ 0 | $ 0 |  |
Collateral, credit card program |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Restricted cash and cash equivalents |  |  | $ 30,000 |
Minimum |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Probability of convertible qualified financing (as a percent) |  | 90.00% |  |
Derivative instrument, conversion range, term |  | 3 months |  |
Property and equipment, estimated useful lives | 2 years |  |  |
Maximum |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Probability of convertible qualified financing (as a percent) |  | 100.00% |  |
Derivative instrument, conversion range, term |  | 12 months |  |
Property and equipment, estimated useful lives | 5 years |  |  |
Sesen Bio, Inc. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Deferred financing costs | $ 4,200,000 | $ 4,100,000 |  | $ 8,300,000

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