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Financial Royalty Assets, net - Narrative (Details) - USD ($) |  | 1 Months Ended | 3 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 31, 2017 | Nov. 30, 2023 | Mar. 31, 2025 | Jun. 30, 2024 | Mar. 31, 2024 | Jan. 31, 2025 | Dec. 31, 2024 | Aug. 31, 2024 | Jul. 15, 2024 | Oct. 31, 2023
Finite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |
Impairment loss of financial royalty assets |  |  | $ 0 |  | $ 0 |  |  |  |  |
Gross carrying value |  |  | 201,618,000 |  |  |  | $ 198,587,000 |  |  |
Ensifentrine inventors |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |
Gross carrying value |  |  | 17,790,000 |  | 3,800,000 | $ 1,800,000 | 15,969,000 | $ 13,600,000 |  |
Elutia (CorMatrix) |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |
Product royalty (as a percent) | 5.00% |  |  |  |  |  |  |  |  |
Gross carrying value |  |  | 9,870,000 |  |  |  | $ 9,418,000 |  |  |
Proceeds from royalties received | $ 10,000,000 |  |  |  |  |  |  |  |  |
Credit loss adjustment |  |  | $ (400,000) |  | $ (3,000,000) |  |  |  |  |
Elutia (CorMatrix) | Maximum |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |
Additional royalties receivable under sales-based milestones | $ 10,000,000 |  |  |  |  |  |  |  |  |
Ovid Therapeutics |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |
Impairment loss of financial royalty assets |  |  |  | $ 26,200,000 |  |  |  |  |  |
APEIRON |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |
Contract assets (financial royalty assets) |  |  |  |  |  |  |  |  | $ 106,156,000 |
Deferred tax liability |  |  |  |  |  |  |  |  | 18,109,000 |
Tolerance Therapeutics (Tzield®) |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |
Cash payments for acquisition |  | $ 20,000,000 |  |  |  |  |  |  |  |
Product royalty (as a percent) |  | 1.00% |  |  |  |  |  |  |  |
Deferred tax liability |  | $ 5,500,000 |  |  |  |  |  |  |  |
Qarziba | APEIRON |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |
Contract assets (financial royalty assets) |  |  |  |  |  |  |  |  | 104,900,000 |
InvIOs | APEIRON |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |
Contract assets (financial royalty assets) |  |  |  |  |  |  |  |  | $ 1,300,000 |
Soticlestat | Ovid Therapeutics |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets |  |  |  |  |  |  |  |  |  |
Consideration paid for an interest in potential development milestone |  |  |  |  |  |  |  |  |  | $ 30,000,000
Interest in sales revenue (as a percent) |  |  |  |  |  |  |  |  |  | 13.00%

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