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Sale of future royalties (Tables) | 3 Months Ended
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Mar. 31, 2025
Other Liabilities Disclosure [Abstract] |
Schedule of activity related to the net liability from inception of the Agreement | The table below shows the activity related to the net liability for the three months ended March 31, 2025 and 2024:
| Three Months Ended March 31,
| 2025 |  | 2024
| (in thousands)
Net liability related to sale of future royalties - beginning balance | $ | 4,829 |  |  | $ | 6,953 |
Non-cash royalty revenue | (448) |  |  | (593) |
Non-cash interest expense | 28 |  |  | 36 |
Net liability related to sale of future royalties - ending balance | $ | 4,409 |  |  | $ | 6,396 |

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