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Commitments and Contingencies - Contingent Consideration (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023 | Jun. 30, 2023 | Jun. 30, 2023 | Jun. 21, 2023 | Mar. 31, 2023 | Mar. 29, 2023 | Dec. 31, 2022 | Feb. 25, 2019
Commitments And Contingencies |  |  |  |  |  |  |  |  |
Contingent consideration under RPAs, AAAs and CPPAs | $ 1,000 | $ 1,000 | $ 1,000 | $ 1,000 |  |  |  | $ 75 |
Receipts under RPAs, AAAs and CPPAs |  |  |  | 2,934 |  |  |  |  |
Changes in estimated fair value of contingent consideration |  |  |  | 75 |  |  |  |  |
LadRx |  |  |  |  |  |  |  |  |
Commitments And Contingencies |  |  |  |  |  |  |  |  |
Contingent consideration under RPAs, AAAs and CPPAs |  |  |  |  | $ 1,000 |  |  |  |
Changes in estimated fair value of contingent consideration | 0 |  |  |  |  |  |  |  |
Aronora, Kuros, Affitech, ObsEva, and Merck KGaA |  |  |  |  |  |  |  |  |
Commitments And Contingencies |  |  |  |  |  |  |  |  |
Contingent consideration under RPAs, AAAs and CPPAs | 0 | 0 | 0 | 0 |  |  |  |  |
Royalty Purchase Agreement | LadRx |  |  |  |  |  |  |  |  |
Commitments And Contingencies |  |  |  |  |  |  |  |  |
Contingent consideration under RPAs, AAAs and CPPAs |  |  |  |  | $ 1,000 |  |  |  |
Changes in estimated fair value of contingent consideration |  |  |  | 0 |  |  |  |  |
Royalty Purchase Agreement | Bioasis |  |  |  |  |  |  |  |  |
Commitments And Contingencies |  |  |  |  |  |  |  |  |
Contingent consideration under RPAs, AAAs and CPPAs | 0 | 0 | 0 | 0 |  |  |  |  | $ 75
Commercial Payment Purchase Agreement | Aptevo |  |  |  |  |  |  |  |  |
Commitments And Contingencies |  |  |  |  |  |  |  |  |
Contingent consideration under RPAs, AAAs and CPPAs | $ 0 | 0 | 0 | 0 |  | $ 50 | $ 50 |  |
Payment for contingent consideration under CPPA |  |  |  | $ 50 |  |  |  |  |
Commercial Payment Purchase Agreement | Aptevo | Minimum |  |  |  |  |  |  |  |  |
Commitments And Contingencies |  |  |  |  |  |  |  |  |
Receipts under RPAs, AAAs and CPPAs |  |  | $ 500 |  |  |  |  |  |
Commercial Payment Purchase Agreement | Medexus |  |  |  |  |  |  |  |  |
Commitments And Contingencies |  |  |  |  |  |  |  |  |
Receipts under RPAs, AAAs and CPPAs |  | $ 600 |  |  |  |  |  |  |

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