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Royalty Financing Agreement - Carrying Value of Royalty Financing Agreement (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |  |
Royalty financing agreement liability - beginning balance | $ 148,015 |  |
Royalty financing agreement liability - ending balance | 155,034 | $ 148,015 |
Amortization of issuance costs | 7,320 | 3,991 | $ 1,890
Royalty Financing Agreement | 155,034 | 148,015 |
Royalty Agreements |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense recognized | 18,846 | 3,687 | 0
Secured Debt |  |  |
Debt Instrument [Line Items] |  |  |
Amortization of issuance costs | 521 | 101 |
Secured Debt | Royalty Agreements |  |  |
Debt Instrument [Line Items] |  |  |
Royalty financing agreement liability - beginning balance | 151,538 | 150,000 |
Revenue Interest Payments paid and payable | (12,222) | (2,149) |
Interest expense recognized | 18,846 | 3,687 |
Royalty financing agreement liability - ending balance | 158,162 | 151,538 | 150,000
Royalty financing issuance costs, unamortized - beginning balance | 3,523 | 3,624 |
Other | (126) | 0 |
Deferred issuance costs, unamortized - ending balance | 3,128 | 3,523 | 3,624
Royalty Financing Agreement | $ 158,162 | $ 151,538 | $ 150,000

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