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Acquisition of Pelican Therapeutics (Narrative) (Details) - USD ($)	1 Months Ended		3 Months Ended	12 Months Ended		36 Months Ended
	Jun. 30, 2016	May 31, 2016	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	May 31, 2020	Oct. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Accrued liabilities				$ 1,676,467	$ 1,678,051
Goodwill				$ 1,452,338	$ 2,189,338
Percentage of non-controlling interest acquired				15.00%	15.00%
Revenue				$ 3,049,104	$ 5,793,849
Net loss (income)				(20,017,568)	(15,733,854)
Net loss				$ 20,384,716	$ 16,591,293
Pelican Therapeutics, Inc.
Business Acquisition [Line Items]
Ownership interest in subsidiary				85.00%	85.00%		85.00%	80.00%
Pelican Therapeutics, Inc.
Business Acquisition [Line Items]
Percentage of voting interests acquired in acquisition				85.00%	80.00%				80.00%
Fair value of contingent consideration					$ 200,000
Percentage of non-controlling interest acquired				20.00%
Amount awarded from CPRIT grant	$ 15,200,000	$ 15,200,000				$ 15,200,000
Pelican Therapeutics, Inc. \| Stockholders
Business Acquisition [Line Items]
Cash consideration			$ 300,000