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Condensed Consolidated Financial Statement Details (Tables) | 3 Months Ended
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Mar. 31, 2024
Inventory Disclosure [Abstract] |
Schedule of Inventory | Inventory consists of the following (in thousands):
|  | March 31, 2024 |  |  | December 31, 2023 |
Raw materials |  | $ | 1,936 |  |  | $ | 1,861 |
Work-in-process |  |  | 9,962 |  |  |  | 12,880 |
Finished goods |  |  | 4,340 |  |  |  | 1,360 |
Total inventory, net |  | $ | 16,238 |  |  | $ | 16,101 |
Schedule of Other Current Assets | Other current assets consist of the following (in thousands):
|  | March 31, 2024 |  |  | December 31, 2023 |
Prepaid research and development expenses |  | $ | 4,767 |  |  | $ | 4,325 |
Non-trade receivables and other |  |  | 1,816 |  |  |  | 1,047 |
Other prepaid expenses |  |  | 4,160 |  |  |  | 4,407 |
Total other current assets |  | $ | 10,743 |  |  | $ | 9,779 |
Schedule of Accrued Expenses | Accrued expenses consist of the following (in thousands):
|  | March 31, 2024 |  |  | December 31, 2023 |
Accrued compensation |  | $ | 7,384 |  |  | $ | 5,553 |
Accrued clinical trial expenses |  |  | 4,233 |  |  |  | 4,321 |
Liability to collaboration partners |  |  | 1,310 |  |  |  | 2,678 |
Accrued contract termination costs |  |  | 3,043 |  |  |  | 3,020 |
Other accrued expenses |  |  | 8,311 |  |  |  | 6,590 |
Total accrued expenses |  | $ | 24,281 |  |  | $ | 22,162 |
Schedule of Liability Related to Sale of Potential Future Royalties | The following is a reconciliation of the changes in our liabilities related to the sales of future royalties for the three months ended March 31, 2024 (in thousands):
|  | Three Months Ended March 31, 2024 |
|  | 2012 Purchase and Sale Agreement |  |  | 2020 Purchase and Sale Agreement |  |  | Total |
Liabilities related to the sales of future royalties, net – beginning balance |  | $ | 24,217 |  |  | $ | 88,408 |  |  | $ | 112,625 |
Non-cash royalty revenue |  |  | (6,944 | ) |  |  | (8,564 | ) |  |  | (15,508 | )
Non-cash interest expense |  |  | 1,831 |  |  |  | 3,700 |  |  |  | 5,531 |
Amortization of transaction costs |  |  | — |  |  |  | 209 |  |  |  | 209 |
Proceeds from the Amendment |  |  | — |  |  |  | 15,000 |  |  |  | 15,000 |
Liabilities related to the sales of future royalties, net – ending balance |  | $ | 19,104 |  |  | $ | 98,753 |  |  | $ | 117,857 |

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