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Goodwill and Intangible Assets - Schedule Goodwill and Intangible Assets (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019	Apr. 30, 2016	Jun. 30, 2009	Jan. 31, 2005
Indefinite lived:
Goodwill, gross	$ 10,513,371	$ 10,513,371
Goodwill, net book value	10,513,371	10,513,371
Definite lived:
Intangible assets, gross	10,473,761	10,473,761
Intangible assets, accumulated amortization	(7,190,221)	(6,779,910)
Intangible assets, net book value	3,283,540	3,693,851
Total goodwill and intangible assets, gross	20,987,132	20,987,132
Total goodwill and intangible assets, net book value	13,796,911	14,207,222
Inovio AS
Indefinite lived:
Goodwill, net book value					$ 3,900,000
VGX
Indefinite lived:
Goodwill, net book value				$ 6,200,000
Bioject
Indefinite lived:
Goodwill, net book value			$ 400,000
Licenses
Definite lived:
Intangible assets, gross	1,323,761	1,323,761
Intangible assets, accumulated amortization	(1,269,665)	(1,248,104)
Intangible assets, net book value	54,096	75,657
Bioject
Definite lived:
Intangible assets, gross	5,100,000	5,100,000
Intangible assets, accumulated amortization	(2,395,556)	(2,175,556)
Intangible assets, net book value	2,704,444	2,924,444
Other
Definite lived:
Intangible assets, gross	4,050,000	4,050,000
Intangible assets, accumulated amortization	(3,525,000)	(3,356,250)
Intangible assets, net book value	$ 525,000	$ 693,750
Weighted Average
Definite lived:
Useful life (in years)	11 years
Weighted Average | Licenses
Definite lived:
Useful life (in years)	10 years
Weighted Average | Bioject
Definite lived:
Useful life (in years)	12 years
Weighted Average | Other
Definite lived:
Useful life (in years)	18 years

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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