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Geneos Therapeutics, Inc. - Narrative (Details) - USD ($)		1 Months Ended		3 Months Ended		6 Months Ended
	Jun. 01, 2020	Jun. 30, 2020	Feb. 28, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jan. 31, 2020	Dec. 31, 2019
Noncontrolling Interest [Line Items]
Gain on deconsolidation of investment				$ 4,121,075	$ 0	$ 4,121,075	$ 0
Share in net loss of Geneos				(901,757)	$ 0	(901,757)	$ 0
Investment in equity method investments		$ 2,717,241		$ 2,717,241		$ 2,717,241			$ 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		$ 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 in net loss of Geneos		(902,000)
Investment in equity method investments	3,618,998
Due from related parties		97,000		97,000		97,000
Geneos Therapeutics, Inc. | Common stock
Noncontrolling Interest [Line Items]
Share in net loss of Geneos		(819,000)
Investment in equity method investments	819,000	0		$ 0		$ 0
Geneos Therapeutics, Inc. | Preferred stock
Noncontrolling Interest [Line Items]
Share in net loss of Geneos		$ (83,000)
Investment in equity method investments	$ 2,799,998

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