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Acquisition of EGEN Assets (Details Narrative) - USD ($)			1 Months Ended		3 Months Ended					9 Months Ended		12 Months Ended
	Jun. 16, 2017	Jun. 20, 2014	Dec. 31, 2016	Jun. 20, 2014	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Asset impairment charges, total							$ 2,500,000
Business Combination, Consideration Transferred, Liabilities Incurred					$ 9,000,000	$ 13,100,000	12,500,000	$ 13,800,000
Gain (Loss) from Change in Fair Value of Earn out Milestone Liability					4,100,000		1,300,000			$ (3,567,671)
Assets					40,911,954					40,911,954		$ 47,514,433
Finite-lived intangible assets, net, ending balance					625,121					625,121		795,608
Purchase Agreement [Member]
Finite-lived intangible assets, net, ending balance					625,121					625,121		795,608
Finite-lived intangible assets, accumulated amortization					966,093					966,093		795,606
IPR&D Drug Technology Platforms [Member]
Asset impairment charges, total			$ 1,400,000						$ 1,400,000
EGEN Inc [Member]
Potential future earn-out payments		$ 30,400,000		$ 30,400,000								24,400,000
Payments to Acquire Businesses, Gross				$ 3,000,000
Stock issued during period, shares, acquisitions				193,728
Number of common stock issued or issuable	47,862
Business Combination, Consideration Transferred, Liabilities Incurred		13,900,000				$ 13,100,000		$ 13,800,000		9,000,000	$ 12,500,000	$ 12,500,000	$ 13,200,000
Gain (Loss) from Change in Fair Value of Earn out Milestone Liability					4,114,995		1,246,151			3,567,671	670,172
Goodwill, acquisition										2,000,000
EGEN Inc [Member] | Purchase Agreement [Member]
Gain (Loss) from Change in Fair Value of Earn out Milestone Liability					4,500,000
Finite-lived intangible assets acquired										$ 1,600,000
Finite-lived intangible asset, useful life										7 years
Amortization expense					56,829		170,487			$ 56,829	170,487
EGEN Inc [Member] | IPR&D Drug Technology Platforms [Member]
Indefinite lived intangible assets										24,200,000
EGEN Inc [Member] | Ovarian Cancer [Member]
Potential future earn-out payments					12,400,000					12,400,000
Initial assets value					6,900,000					6,900,000
Assets					2,400,000					2,400,000
EGEN Inc [Member] | Glioblastoma Multiforme Brain Cancer [Member]
Potential future earn-out payments					$ 12,000,000					$ 12,000,000
Asset impairment charges, total							$ 6,900,000				$ 9,400,000
EGEN Inc [Member] | Maximum [Member]
Total purchase price for the asset acquisition				$ 44,400,000
Potential future earn-out payments		$ 30,400,000		$ 30,400,000

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