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Geneos Therapeutics, Inc. - Investment In Geneos (Details) - USD ($)	Jun. 30, 2020	Jun. 01, 2020	Dec. 31, 2019
Noncontrolling Interest [Line Items]
Investment in equity method investments	$ 2,717,241		$ 0
Geneos Therapeutics, Inc.
Noncontrolling Interest [Line Items]
Investment owned (in shares)		5,113,206
Investment in equity method investments		$ 3,618,998
Common stock | Geneos Therapeutics, Inc.
Noncontrolling Interest [Line Items]
Investment owned (in shares)		3,000,000
Share price (in dollars per share)		$ 0.273
Investment in equity method investments	$ 0	$ 819,000
Preferred stock | Geneos Therapeutics, Inc.
Noncontrolling Interest [Line Items]
Investment owned (in shares)		2,113,206
Share price (in dollars per share)		$ 1.325
Investment in equity method investments		$ 2,799,998

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