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Geneos Therapeutics, Inc. - Narrative (Details) - USD ($) |  | 1 Months Ended | 3 Months Ended | 7 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 01, 2020 | Nov. 30, 2020 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Feb. 28, 2021 | Jun. 30, 2020 | Jan. 31, 2020 | Jan. 01, 2020
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Payments to acquire additional interest in subsidiaries |  |  | $ 1,999,998 | $ 0 |  |  |  |  |  |
Share of net loss in Geneos |  |  | $ 2,165,213 | 434,387 |  |  |  |  |  |
Geneos Therapeutics, Inc. |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage by parent |  | 36.00% | 24.00% |  |  | 61.00% | 35.00% |  |  | 52.00%
Ownership percentage |  |  |  |  |  |  |  | 47.00% |  |
Geneos Therapeutics, Inc. |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Payments to acquire additional interest in subsidiaries |  | $ 1,400,000 |  |  |  | $ 1,200,000 |  |  |  |
Stock purchase agreement, commitment of additional investment |  |  |  |  |  |  |  | $ 800,000 | $ 800,000 |
Gain on deconsolidation of investment | $ 4,100,000 |  |  |  |  |  |  |  |  |
Loss from equity method investment, recorded and allocated to investment |  |  |  | (1,500,000) |  |  |  |  |  |
Remeasurement of Geneos Series A-1 preferred stock | $ 2,400,000 |  |  |  |  |  |  |  |  |
Share of net loss in Geneos |  |  | $ 434,000 |  |  |  |  |  |  |
Investment in equity method investments |  |  | 0 | 0 |  |  |  |  |  |
Geneos Therapeutics, Inc. | Series A One Preferred Stock |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Share of net loss in Geneos |  |  |  |  | $ 819,000 |  |  |  |  |
Geneos Therapeutics, Inc. | Common stock |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Investment in equity method investments |  |  |  | 0 |  |  |  |  |  |
Geneos Therapeutics, Inc. | Preferred stock |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Share of net loss in Geneos |  |  |  |  | $ 4,200,000 |  |  |  |  |
Investment in equity method investments |  |  | $ (2,000,000) | $ 0 |  |  |  |  |  |

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