Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Contingent Consideration and Employee Retention Bonus (Details)

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Commitments and Contingencies - Contingent Consideration and Employee Retention Bonus (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Feb. 25, 2019
Commitments And Contingencies      
Contingent consideration under RPAs and CPPAs $ 75,000 $ 8,075,000  
Aronora, Kuros, Affitech, ObsEva, and Merck KGaA | Royalty milestones, sales milestones, non-sales milestones, and royalties      
Commitments And Contingencies      
Contingent consideration under RPAs and CPPAs 0    
Royalty Purchase Agreement | Bioasis      
Commitments And Contingencies      
Contingent consideration under RPAs and CPPAs 100,000   $ 100,000
Changes in estimated fair value of contingent consideration $ 0