This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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The Merger (Narrative) (Details) - USD ($)		3 Months Ended	6 Months Ended
The Merger (Narrative) (Details) - USD ($)	May 09, 2019	Jun. 30, 2019	Jun. 30, 2019	Jun. 30, 2020	Dec. 31, 2019
Goodwill acquired				$ 3,490,000	$ 3,490,000
AmpliPhi Biosciences Corporation [Member]
Total purchase consideration	$ 10,700,000
Goodwill acquired	3,500,000
Intangible assets acquired	10,300,000
Deferred tax liability acquired	3,100,000
Business combination, acquisition related costs	$ 1,100,000	$ 500,000	$ 1,100,000