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Fair Values of Financial Instruments - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Investment securities, available for sale |  | $ 7,985,886
Earn-out milestone liability | 7,018,000 | 5,717,709
Corporate Debt Securities [Member] |  |
Investment securities, available for sale |  | 7,985,886
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] |  |
Investment securities, available for sale |  | 7,985,886
Earn-out milestone liability | 7,018,000 | 5,717,709
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] |  |
Investment securities, available for sale |  |
Earn-out milestone liability |  |
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Investment securities, available for sale |  | 7,985,886
Earn-out milestone liability |  |
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Investment securities, available for sale |  |
Earn-out milestone liability | 7,018,000 | 5,717,709
Fair Value, Measurements, Non Recurring [Member] | Inprocess R&D [Member] |  |
Investment securities, available for sale | 13,366,234 | 15,736,491
Fair Value, Measurements, Non Recurring [Member] | Inprocess R&D [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] |  |
Investment securities, available for sale |  |
Fair Value, Measurements, Non Recurring [Member] | Inprocess R&D [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Investment securities, available for sale |  |
Fair Value, Measurements, Non Recurring [Member] | Inprocess R&D [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Investment securities, available for sale | $ 13,366,234 | $ 15,736,491

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