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Significant Agreements and Contracts - Additional Information (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
May 03, 2024 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Effect of exchange rate changes on revenue |  |  |  |  |  |
Total revenue |  | $ 95,842 | $ 0 | $ 95,842 | $ 0 |
Deferred revenue, current |  | 17,013 |  | 17,013 |  | $ 0
Long-term contract liabilities |  | 49,683 |  | 49,683 |  | 0
Accounts receivable |  | 3,629 |  | 3,629 |  | 0
Chiesi |  |  |  |  |  |
Effect of exchange rate changes on revenue |  |  |  |  |  |
Commercial efforts contribution, percentage | 50.00% |  |  |  |  |
Commercialization activities performance, percentage | 50.00% |  |  |  |  |
Up-front, nonrefundable payment received | $ 160,000 |  |  |  |  |
Loyalty term, expiration period | 10 years |  |  |  |  |
Development cost reimbursement payment | $ 160,000 |  |  |  |  |
Contract with customer, liability, fair value of equity option | 500 |  |  |  |  |
Total revenue |  | 95,842 |  | 95,842 |  |
Contract Liability |  | $ 66,696 |  | $ 66,696 |  | $ 0
Revenue recognition period |  | 4 years 6 months |  | 4 years 6 months |  |
Accounts receivable |  | $ 3,600 |  | $ 3,600 |  |
Chiesi | US License |  |  |  |  |  |
Effect of exchange rate changes on revenue |  |  |  |  |  |
Total revenue |  | 88,800 |  |  |  |
Chiesi | Revenue from PAH research and development service performance obligation satisfied during reporting period |  |  |  |  |  |
Effect of exchange rate changes on revenue |  |  |  |  |  |
Total revenue |  | $ 7,100 |  |  |  |
Chiesi | Maximum |  |  |  |  |  |
Effect of exchange rate changes on revenue |  |  |  |  |  |
Collaboration agreement, regulatory milestones receivable | 146,000 |  |  |  |  |
Collaboration agreement, sales milestones receivable | $ 180,000 |  |  |  |  |

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