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Geneos Therapeutics, Inc. - Preferred stock Investment (Details) - USD ($)
3 Months Ended 4 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2020
Sep. 30, 2019
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]          
Investment in Geneos upon deconsolidation       $ 0  
Share in net loss of Geneos $ (1,759,674) $ 0   (2,661,431) $ 0
Investment in Geneos as of September 30, 2020 957,567   $ 957,567 957,567  
Geneos Therapeutics, Inc.          
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]          
Share in net loss of Geneos     (2,661,431)    
Investment in Geneos as of September 30, 2020 $ 957,567   $ 957,567 $ 957,567