Quarterly report pursuant to Section 13 or 15(d)

Sponsored Research and Clinical Trial Agreements - Summary of Aevitas expense related to its sponsored research agreements (Details)

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Sponsored Research and Clinical Trial Agreements - Summary of Aevitas expense related to its sponsored research agreements (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Total Research and Development - Licenses Acquired $ 458 $ 700 $ 2,278 $ 1,350
Research and clinical trial agreements [Member] | Aevitas        
Total Research and Development - Licenses Acquired 163 272 785 772
Research and clinical trial agreements [Member] | Aevitas | UMass - AAV [Member]        
Total Research and Development - Licenses Acquired 163 0 218 0
Research and clinical trial agreements [Member] | Aevitas | UPenn - AAV [Member]        
Total Research and Development - Licenses Acquired 0 255 567 755
Research and clinical trial agreements [Member] | Aevitas | Duke - AAV [Member]        
Total Research and Development - Licenses Acquired $ 0 $ 17 $ 0 $ 17