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Significant Agreements and Contracts - Summary of Revenues Disaggregated by Timing of Revenue Recognition (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Effect of exchange rate changes on revenue |  |  |  |
Total revenue from Chiesi Collaboration Agreement | $ 95,842 | $ 0 | $ 95,842 | $ 0
Chiesi |  |  |  |
Effect of exchange rate changes on revenue |  |  |  |
Total revenue from Chiesi Collaboration Agreement | 95,842 |  | 95,842 |
Revenue from sale of US license | Point in Time: | Chiesi |  |  |  |
Effect of exchange rate changes on revenue |  |  |  |
Total revenue from Chiesi Collaboration Agreement | 76,686 |  | 76,686 |
Revenue from sale of ROW license | Point in Time: | Chiesi |  |  |  |
Effect of exchange rate changes on revenue |  |  |  |
Total revenue from Chiesi Collaboration Agreement | 12,050 |  | 12,050 |
Revenue from PAH research and development service performance obligation satisfied during reporting period | Over Time: | Chiesi |  |  |  |
Effect of exchange rate changes on revenue |  |  |  |
Total revenue from Chiesi Collaboration Agreement | 3,398 |  | 3,398 |
Revenue from PH-ILD research and development service performance obligation satisfied during reporting period | Over Time: | Chiesi |  |  |  |
Effect of exchange rate changes on revenue |  |  |  |
Total revenue from Chiesi Collaboration Agreement | 60 |  | 60 |
Revenue from PAH research and development costs subject to reimbursement | Over Time: | Chiesi |  |  |  |
Effect of exchange rate changes on revenue |  |  |  |
Total revenue from Chiesi Collaboration Agreement | 3,297 |  | 3,297 |
Revenue from PH-ILD research and development costs subject to reimbursement | Over Time: | Chiesi |  |  |  |
Effect of exchange rate changes on revenue |  |  |  |
Total revenue from Chiesi Collaboration Agreement | 333 |  | 333 |
Effect of exchange rate changes on revenue | Over Time: | Chiesi |  |  |  |
Effect of exchange rate changes on revenue |  |  |  |
Total revenue from Chiesi Collaboration Agreement | $ 18 |  | $ 18 |

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