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Basis of Presentation and Summary of Significant Accounting Policies - Revenue by Source (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Disaggregation of Revenue |  |  |  |
Total revenues and other income | $ 115,461 | $ 51,812 | $ 208,421 | $ 124,321
Royalties |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 46,586 | 31,709 | 110,472 | 73,966
Revenue from intangible royalty assets |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 40,161 | 26,552 | 91,832 | 67,512
Kyprolis |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 11,619 | 11,599 | 25,145 | 27,229
Evomela |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 1,893 | 1,747 | 5,339 | 5,877
Teriparatide injection |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 2,632 | 2,376 | 6,121 | 6,520
Rylaze |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 3,557 | 3,886 | 9,540 | 10,070
Filspari |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 9,078 | 3,206 | 20,957 | 7,402
Vaxneuvance |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 2,039 | 1,466 | 5,967 | 3,962
Ohtuvayre |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 2,717 | 112 | 6,213 | 113
Capvaxive |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 3,206 | 435 | 6,341 | 435
Other |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 3,420 | 1,725 | 6,209 | 5,904
Income from financial royalty assets |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 6,425 | 5,157 | 18,640 | 6,454
Qarziba |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 5,976 | 4,628 | 17,303 | 4,628
Other |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 449 | 529 | 1,337 | 1,826
Captisol |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 10,672 | 6,255 | 32,419 | 22,967
Contract revenue and other income |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 58,203 | 13,848 | 65,530 | 27,388
Income from Pelthos Transaction |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 53,072 | 0 | 53,072 | 0
Contract revenue |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | 131 | 13,848 | 6,441 | 25,444
Other income |  |  |  |
Disaggregation of Revenue |  |  |  |
Total revenues and other income | $ 5,000 | $ 0 | $ 6,017 | $ 1,944

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