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Organization and Description of Business (Details) $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
May 08, 2024 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) | May 12, 2023 purchaser
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |
Accumulated deficit |  | $ 625,873 |  | $ 625,873 |  | $ 537,314 |
Operating losses |  | 29,499 | $ 26,731 | 56,077 | $ 49,243 |  |
Net cash used in operating activities |  |  |  | 48,638 | 41,244 |  |
Revenue interest liability |  | 60,078 |  | 60,078 |  | 38,600 |
Cash and cash equivalents |  | 93,563 |  | 93,563 |  | 80,448 |
Additional purchase agreement proceeds |  |  |  | 43,396 | $ 0 |  |
Revenue Interest Purchase Agreement |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |
Number of purchasers | purchaser |  |  |  |  |  |  | 2
Revenue interest liability |  | 60,100 |  | 60,100 |  | $ 38,600 |
Contingent cash collateral to be funded | $ 54,000 |  |  |  |  |  |
Contingent cash collateral, restricted amount | $ 50,000 |  |  |  |  |  |
Revenue Interest Purchase Agreement | Subsequent Installment Two |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |
Milestone payment potentially receivable |  | $ 40,000 |  | $ 40,000 |  |  |

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