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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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