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Collaborations, Licensing and Other Arrangements - Additional Information (Detail) - USD ($) |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Oct. 31, 2018 | Dec. 31, 2023 | Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024 | May 31, 2018
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Deferred revenue - current |  |  | $ 10,954,000 |  | $ 10,954,000 |  | $ 12,407,000 |
Deferred revenue - non-current |  |  | 45,472,000 |  | 45,472,000 |  | 51,160,000 |
Total revenue from UT |  |  | 76,527,000 | $ 72,386,000 | 154,881,000 | $ 138,649,000 |  |
Milestone payments |  |  |  |  | 639,000 |  |  |
Amphastar |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Performance obligation transaction price |  |  |  |  | 2,500,000 |  |  |
Performance obligation transaction price recognized |  |  | 500,000 |  | 1,000,000 |  |  |
Performance obligation transaction price yet to recognize |  |  |  |  | 1,000,000 |  |  |
Manufacturing Services |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Total revenue from UT |  |  | 900,000 | 1,000,000 | 1,200,000 | 1,400,000 |  |
Collaborations and services |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Total revenue from UT |  |  | 22,845,000 | 26,014,000 | 52,221,000 | 50,862,000 |  |
AFREZZA product sales |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Total revenue from UT |  |  | 22,454,000 | 20,780,000 | 41,427,000 | 39,544,000 |  |
United Therapeutics Corporation |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Total revenue from UT |  |  | 53,452,000 | 51,570,000 | 112,275,000 | 99,032,000 |  |
Collaboration and License Agreement | United Therapeutics Corporation |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Deferred revenue |  |  | 55,400,000 |  | 55,400,000 |  | 62,400,000 |
Deferred revenue - current |  |  | 10,900,000 |  | 10,900,000 |  | 12,300,000 |
Deferred revenue - non-current |  |  | 44,500,000 |  | $ 44,500,000 |  | 100,000 |
Royalty percentage | 10.00% |  |  |  |  |  |  |
Royalty future net sales percentage |  | 1.00% |  |  |  |  |  |
Royalty retaining percentage |  | 9.00% |  |  |  |  |  |
License agreement description |  |  |  |  | There have been various amendments to the UT License Agreement and the CSA since inception. As amended, the term of the CSA continues until December 31, 2031 (unless earlier terminated) and is thereafter renewed automatically for additional, successive two-year terms unless (i) UT provides notice to the Company at least 24 months in advance of such renewal that UT does not wish to renew the CSA or (ii) the Company provides notice to UT at least 48 months in advance of such renewal that the Company does not wish to renew the CSA |  |  |
Collaboration and License Agreement | United Therapeutics Corporation | Facility Expansion Services |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Deferred revenue |  |  | 55,300,000 |  | $ 55,300,000 |  |  |
Collaboration and License Agreement | United Therapeutics Corporation | Other Administrative Services |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Deferred revenue |  |  | 61,300,000 |  | 61,300,000 |  |  |
Commercial Supply Agreement | United Therapeutics Corporation | Collaborations and services |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Total revenue from UT |  |  | 22,224,000 | 25,978,000 | 51,042,000 | 50,442,000 |  |
Co-Promotion Agreement | Collaborations and services | Amphastar |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Total revenue from UT |  |  | 500,000 |  | 1,000,000 |  |  |
Supply and Distribution Agreement | AFREZZA product sales | Biomm |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Total revenue from UT |  |  |  |  | 0 |  |  |
License and Distribution Agreement | Cipla Ltd |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Deferred revenue |  |  | 1,100,000 |  | 1,100,000 |  | 1,200,000 |
Deferred revenue - current |  |  | 100,000 |  | 100,000 |  | 100,000 |
Deferred revenue - non-current |  |  | 1,000,000 |  | $ 1,000,000 |  | 1,100,000 |
Marketing and distribution agreement date |  |  |  |  | 2018-05 |  |  |
Milestone payments |  |  |  |  |  |  | $ 1,100,000 |
License and Distribution Agreement | Collaborations and services | Cipla Ltd |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Total revenue from UT |  |  | $ 37,000 | $ 36,000 | $ 73,000 | $ 73,000 |  |
License and Distribution Agreement | Nonrefundable Licensing Fee |  |  |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |
Deferred revenue |  |  |  |  |  |  |  | $ 2,200,000

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