Summary of Significant Accounting Policies - UK (Details)	6 Months Ended
	Jun. 30, 2021 USD ($)
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Balance, bgn	$ 434,238
UK research and development incentives, Q1 2021	29,159
Additional 2019 incentive earned	51,893
UK research and development incentives cash receipt	(383,933)
Foreign currency translation	3,766
Balance, end	135,123
Current
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Balance, bgn	361,096
UK research and development incentives, transfer	73,142
Additional 2019 incentive earned	51,893
UK research and development incentives cash receipt	(383,933)
Foreign currency translation	4,400
Balance, end	106,598
Long-term
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Balance, bgn	73,142
UK research and development incentives, transfer	(73,142)
UK research and development incentives, Q1 2021	29,159
Foreign currency translation	(634)
Balance, end	$ 28,525