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Intangibles, Net and Goodwill - Schedule of Rollforward of Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Finite-lived Intangible Assets [Roll Forward] |  |  |  |  |  |
Intangibles, gross |  |  |  |  | $ 63,704 | $ 68,756
Additions |  |  | $ 0 | $ 0 |  |
Amortization | $ (1,263) | $ (1,263) | (2,526) | (2,526) |  |
Intangibles, net | 61,178 | 66,230 | 61,178 | 66,230 | 63,704 |
Acquired ARIKAYCE R&D |  |  |  |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |  |  |  |
Intangibles, gross |  |  |  |  | 32,738 | 37,588
Additions |  |  | 0 | 0 |  |
Amortization |  |  | (2,425) | (2,425) |  |
Intangibles, net | 30,313 | 35,163 | 30,313 | 35,163 |  |
Acquired IPR&D |  |  |  |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |  |  |  |
Intangibles, gross |  |  |  |  | 29,600 | 29,600
Additions |  |  | 0 | 0 |  |
Amortization |  |  | 0 | 0 |  |
Intangibles, net | 29,600 | 29,600 | 29,600 | 29,600 |  |
PARI milestones |  |  |  |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |  |  |  |
Intangibles, gross |  |  |  |  | $ 1,366 | $ 1,568
Additions |  |  | 0 | 0 |  |
Amortization |  |  | (101) | (101) |  |
Intangibles, net | $ 1,265 | $ 1,467 | $ 1,265 | $ 1,467 |  |

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