Significant Agreements and Contracts - Schedule of Contract Liability Activity (Details) - Chiesi - USD ($) $ in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Contract With Customer, Liability [Rollforward] | ||
| Opening balance | $ 49,593 | $ 55,919 |
| Effect of exchange rate changes on contract liabilities | (1,601) | 6,325 |
| Ending balance | 37,223 | 54,967 |
| Revenue from PAH research and development service performance obligations satisfied during reporting period | ||
| Contract With Customer, Liability [Rollforward] | ||
| Revenue | (9,680) | (6,144) |
| Revenue from PH-ILD research and development service performance obligations satisfied during reporting period | ||
| Contract With Customer, Liability [Rollforward] | ||
| Revenue | $ (1,089) | $ (1,133) |