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Geneos Therapeutics, Inc. - Narrative (Details) - USD ($) |  | 1 Months Ended | 3 Months Ended | 4 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 01, 2020 | Feb. 28, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Jun. 30, 2020 | Mar. 31, 2020 | Jan. 31, 2020 | Dec. 31, 2019
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain on deconsolidation of investment |  |  | $ 0 | $ 0 |  | $ 4,121,075 | $ 0 |  |  |  |
Share of net loss in Geneos |  |  | 1,759,674 | $ 0 |  | 2,661,431 | $ 0 |  |  |  |
Investment in equity method investments |  |  | $ 957,567 |  | $ 957,567 | $ 957,567 |  |  |  |  | $ 0
Geneos Therapeutics, Inc. |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage by parent |  | 61.00% |  |  |  |  |  |  | 52.00% |  |
Ownership percentage |  |  | 47.00% |  | 47.00% | 47.00% |  |  |  |  |
Geneos Therapeutics, Inc. |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |  |
Payments to acquire additional interest in subsidiaries |  | $ 1,200,000 |  |  |  |  |  |  |  |  |
Stock purchase agreement, commitment of additional investment |  |  |  |  |  |  |  | $ 800,000 |  | $ 800,000 |
Gain on deconsolidation of investment | $ 4,121,075 |  |  |  |  |  |  |  |  |  |
Deconsolidation gain, remeasurement of retained noncontrolling investment to fair value | 2,400,000 |  |  |  |  |  |  |  |  |  |
Share of net loss in Geneos |  |  |  |  | $ 2,661,431 |  |  |  |  |  |
Investment in equity method investments | 3,618,998 |  | $ 957,567 |  | 957,567 | $ 957,567 |  |  |  |  |
Geneos Therapeutics, Inc. | Common stock |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share of net loss in Geneos |  |  |  |  | 819,000 |  |  |  |  |  |
Investment in equity method investments | 819,000 |  | 0 |  | 0 | 0 |  |  |  |  |
Geneos Therapeutics, Inc. | Preferred stock |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share of net loss in Geneos |  |  |  |  | 1,800,000 |  |  |  |  |  |
Investment in equity method investments | $ 2,799,998 |  | $ 958,000 |  | $ 958,000 | $ 958,000 |  |  |  |  |

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