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Material Agreements (Details) - USD ($) $ in Thousands |  |  |  |  |  |  |  |  | 3 Months Ended | 9 Months Ended | 59 Months Ended |
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Aug. 13, 2025 | Mar. 27, 2023 | Mar. 02, 2023 | Oct. 26, 2022 | Sep. 26, 2022 | Nov. 03, 2020 | Oct. 23, 2020 | Apr. 01, 2016 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Mar. 03, 2022
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalties related to the sale of future revenue |  |  |  |  |  |  |  |  | $ 12,807 | $ 13,542 | $ 31,530 | $ 45,694 |  |
Assertio Holdings, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalties related to the sale of future revenue |  |  |  | $ 6,000 |  |  |  |  |  |  |  |  |  |
Proceeds from collaborators |  |  |  | $ 9,000 |  |  |  |  |  |  |  |  |  |
License and royalty revenuea |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalties related to the sale of future revenue |  |  |  |  |  |  |  |  | $ 1,038 | $ 2,162 | $ 2,667 | 14,514 |  |
RTW Investments LP | Purchase And Sale Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exchange for the Purchaser’s payment | $ 75,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue sharing percentage | 9.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue share payments year ten | $ 187,500 |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue share payments thereafter | $ 225,000 |  |  |  |  |  |  |  |  |  |  |  |  |
RTW Investments LP | Purchase And Sale Agreement | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate | 13.50% |  |  |  |  |  |  |  |  |  |  |  |  |
RTW Investments LP | Maximum | Purchase And Sale Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue sharing percentage | 7.50% |  |  |  |  |  |  |  |  |  |  |  |  |
RTW Investments LP | Minimum | Purchase And Sale Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue sharing percentage | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial exploitation agreement with Indivior |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
License agreement term |  |  |  |  |  |  |  |  |  |  | 7 years |  |  |
Automatic renewal period of agreement |  |  | 1 year |  |  |  |  |  |  |  | 1 year |  |  |
License agreement with Sunovion Pharmaceuticals, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate payment |  |  |  |  |  |  | $ 22,000 |  |  |  |  |  |  |
License agreement with Sunovion Pharmaceuticals, Inc. upfront |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate payment |  |  |  |  |  |  | 5,000 |  |  |  |  |  |  |
License agreement with Sunovion Pharmaceuticals, Inc milestones |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate payment |  |  |  |  |  |  | $ 17,000 |  |  |  |  |  |  |
License agreement with Sunovion Pharmaceuticals, Inc milestones | License and royalty revenuea |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalties related to the sale of future revenue |  |  |  |  |  |  |  | $ 4,000 |  |  |  |  |  |
MAM Pangolin Royalty , LLC | Monetization Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of future revenue |  |  |  |  |  | $ 40,000 |  |  |  |  |  |  | $ 50,000 |
Additional proceeds from sale of future revenue |  |  |  |  |  | 10,000 |  |  |  |  |  |  |  |
Proceeds from debt, contingent on additional milestones |  |  |  |  |  | 75,000 |  |  |  |  |  |  |  |
MAM Pangolin Royalty , LLC | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of future revenue |  |  |  |  |  | $ 125,000 |  |  |  |  |  |  |  |
Haisco Pharmaceutical Group Co., Ltd, upfront payment |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Receivable |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,000
Contract with customer, liability, revenue recognized |  |  |  |  |  |  |  |  |  |  |  | 7,000 |  |
Sales commissions and fees |  |  |  |  |  |  |  |  |  |  |  | 134 |  |
License & Supply Agreement | Atnahs Pharma UK Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of future revenue |  |  |  |  | $ 3,500 |  |  |  |  |  |  |  |  |
Atnahs Pharma UK Limited, Amended Agreement | License & Supply Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of future revenue |  | $ 2,000 |  |  |  |  |  |  |  |  |  |  |  |
Mitsubishi Tanabe Pharma America, Inc |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contract with customer, liability, revenue recognized |  |  |  |  |  |  |  |  |  |  |  | 3,317 |  |
Sales commissions and fees |  |  |  |  |  |  |  |  |  |  |  | $ 57 |  |

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