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Fair Values of Financial Instruments - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Investment securities, available for sale | $ 7,985,886 | $ 14,257,998
Earn-out milestone liability | 5,717,709 | 8,907,664
Corporate Debt Securities [Member] |  |
Investment securities, available for sale | 7,985,886 | 14,257,998
Fair Value, Measurements, Recurring [Member] |  |
Earn-out milestone liability | 5,717,709 | 8,907,664
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] |  |
Earn-out milestone liability |  |
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Earn-out milestone liability |  |
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Earn-out milestone liability | 5,717,709 | 8,907,664
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] |  |
Investment securities, available for sale | 7,985,886 | 14,257,998
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 |  |
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Investment securities, available for sale | 7,985,886 | 14,257,998
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Investment securities, available for sale |  |

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