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Royalty Financing Obligation - Activity (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Aug. 01, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Debt Instrument, Increase (Decrease), Net [Roll Forward] |  |  |  |
Receipt of the first tranche of the royalty financing obligation |  | $ 30,000 | $ 0 | $ 0
Accretion of imputed interest expense on royalty financing obligation |  | 9,886 | 12,342 | $ 9,942
Less: royalty payments made to RTW |  | (253) |  |
Royalty Financing |  |  |  |
Debt Instrument, Increase (Decrease), Net [Roll Forward] |  |  |  |
Royalty financing obligation – beginning balance |  | 0 |  |
Receipt of the first tranche of the royalty financing obligation | $ 30,000 | 30,000 |  |
Accretion of imputed interest expense on royalty financing obligation |  | 3,743 |  |
Royalty financing obligation – ending balance |  | 33,490 | $ 0 |
Less: royalty payable to RTW classified within accrued expenses |  | (730) |  |
Long-term Debt, Excluding Current Maturities |  | $ 32,760 |  |

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