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Sale of Future Revenue - Narrative (Details) - USD ($) $ in Thousands |  | 2 Months Ended | 3 Months Ended | 12 Months Ended | 26 Months Ended
--- | --- | --- | --- | --- | ---
Nov. 03, 2020 | Dec. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2022
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Payments of financing costs | $ 2,909 |  |  |  |  |
Revenues |  |  |  | $ 47,680 | $ 50,832 |
Minimum royalty receivable |  |  | $ 1,000 |  |  |
Monetization Agreement |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Effective annual interest rate | 24.90% |  |  |  |  |
Monetization Agreement | Marathon Pangolin Royalty LLC |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Proceeds from sale of future revenue | $ 40,000 | $ 10,000 |  |  |  | $ 50,000
Proceeds from debt, contingent on additional milestones | 75,000 |  |  |  |  |
Royalty |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Revenues |  |  |  | $ (916) |  |
Royalty | License Agreement with Sunovion Pharmaceuticals, Inc. |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Revenues |  |  | $ 8,000 |  |  |
Maximum | Marathon Pangolin Royalty LLC |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Proceeds from sale of future revenue | $ 125,000 |  |  |  |  |

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