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Paragon Agreement (Details) - USD ($) $ in Millions |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Jul. 12, 2023 | Jun. 22, 2023 | Sep. 30, 2023 | Sep. 30, 2023 | May 31, 2023
Paragon Therapeutics Inc |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Milestone payments |  |  | $ 20.0 | $ 20.0 |
Parapyre Option Obligation |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Percentage of annual equity grant of options |  | 1.00% |  |  | 1.00%
Related Party |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Nonrefundable research initiation fee for one program paid in cash |  | $ 0.8 |  |  |
Related Party | Paragon Agreement |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Research initiation fees |  | 3.0 |  |  |
Related party expenses incurred prior to asset acquisition |  | 19.0 |  |  |
Reimbursable research costs |  | 16.0 |  |  |
Related party expenses unpaid prior to asset acquisition |  | $ 19.0 |  |  |
Percentage of annual equity grant of options |  |  | 1.00% | 1.00% |
Related Party | SPY001 License Agreement |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Nomination fee | $ 1.5 |  |  |  |
First milestone payment | 2.5 |  |  |  |
Related Party | SPY001 License Agreement | Maximum |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Contingent obligation based on milestones | $ 22.0 |  |  |  |
Related Party | Stock Compensation And Research And Development Expense |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Amount of related party transaction |  |  | $ 19.4 | $ 20.8 |

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