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Financial Royalty Assets, net (formerly known as Commercial License Rights) - Schedule of Financial Royalty Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying value(2) | $ 73,363 | $ 70,364
Allowance | (5,053) | (8,073)
Net carrying value | 68,310 | 62,291
Elutia (CorMatrix) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying value(2) | 12,680 | 13,304
Allowance | (4,458) | (7,490)
Net carrying value | 8,222 | 5,814
Selexis |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying value(2) | 736 | 940
Allowance | (64) | (179)
Net carrying value | 672 | 761
Ovid (Soticlestat) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying value(2) | 30,310 | 30,310
Allowance | (303) | (303)
Net carrying value | 30,007 | 30,007
Tolerance Therapeutics (TZIELD) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying value(2) | 25,810 | 25,810
Allowance | (101) | (101)
Net carrying value | 25,709 | 25,709
Ensifentrine inventors |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying value(2) | 3,827 | 0
Allowance | (127) | 0
Net carrying value | 3,700 | $ 0
Elutia |  |
Finite-Lived Intangible Assets [Line Items] |  |
Net carrying value | $ 2,600 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 926 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483154/926-20-50-5 + Details
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