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Liabilities Related to the Sales of Future Royalties - Schedule of Liability Related to Potential Future Royalties (Detail) - USD ($) $ in Thousands | 12 Months Ended | 36 Months Ended | 142 Months Ended
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2023 | Dec. 31, 2023
Liability Related To Sale Of Future Royalties [Roll Forward] |  |  |  |  |
Liabilities related to the sales of future royalties—beginning balance | $ 157,461 |  |  |  | $ 0
Royalty monetization proceeds | 0 |  |  |  | 274,000
Non-cash royalty revenue | (68,921) | $ (69,794) | $ (77,746) |  | (472,166)
Non-cash interest expense | 25,334 | 28,911 | $ 47,313 |  | 298,518
Payments to RPI | 0 |  |  |  | (10,000)
Loss on revaluation of liability related to the sale of future royalties | 0 |  |  |  | 23,522
Liabilities related to the sales of future royalties – ending balance | 113,874 | 157,461 |  | $ 113,874 | 113,874
Less: unamortized transaction costs | (1,249) |  |  | (1,249) | (1,249)
Liabilities related to the sales of future royalties, net | 112,625 | 155,378 |  | 112,625 | 112,625
2012 Purchase and Sale Agreement |  |  |  |  |
Liability Related To Sale Of Future Royalties [Roll Forward] |  |  |  |  |
Liabilities related to the sales of future royalties—beginning balance | 55,167 |  |  |  | 0
Royalty monetization proceeds | 0 |  |  |  | 124,000
Non-cash royalty revenue | (37,323) |  |  |  | (353,847)
Non-cash interest expense | 6,373 |  |  |  | 240,542
Payments to RPI | 0 |  |  |  | (10,000)
Loss on revaluation of liability related to the sale of future royalties | 0 |  |  |  | 23,522
Liabilities related to the sales of future royalties – ending balance | 24,217 | 55,167 |  | 24,217 | 24,217
Less: unamortized transaction costs | 0 |  |  | 0 | 0
Liabilities related to the sales of future royalties, net | 24,217 |  |  | 24,217 | 24,217
2020 Purchase and Sale Agreement |  |  |  |  |
Liability Related To Sale Of Future Royalties [Roll Forward] |  |  |  |  |
Liabilities related to the sales of future royalties—beginning balance | 102,294 |  |  | 0 |
Royalty monetization proceeds | 0 |  |  | 150,000 |
Non-cash royalty revenue | (31,598) |  |  | (118,319) |
Non-cash interest expense | 18,961 |  |  | 57,976 |
Payments to RPI | 0 |  |  | 0 |
Loss on revaluation of liability related to the sale of future royalties | 0 |  |  | 0 |
Liabilities related to the sales of future royalties – ending balance | 89,657 | $ 102,294 |  | 89,657 | 89,657
Less: unamortized transaction costs | (1,249) |  |  | (1,249) | (1,249)
Liabilities related to the sales of future royalties, net | $ 88,408 |  |  | $ 88,408 | $ 88,408

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- Definition Gain (Loss) ON Revaluation Of Liabilities Related To The Sale Of Future Royalties, Gross + References No definition available. + Details
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- Definition Liabilities on sale of future royalties, unamortized transaction costs. + References No definition available. + Details
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- Definition Liability Related To Sale Of Future Royalties + References No definition available. + Details
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- Definition Liability Related To Sale Of Potential Future Royalties Non Current + References No definition available. + Details
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- Definition Liability related to sale of potential future royalties non current net of issuance costs. + References No definition available. + Details
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- Definition Non cash royalty revenue related to sale future royalties. + References No definition available. + Details
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