Significant Accounting Policies (Details Textual)	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 GBP (£)	Mar. 31, 2017 USD ($)	Dec. 31, 2015 USD ($)
Significant Accounting Policies [Line Items]
Deferred Tax Liabilities, Net, Noncurrent	$ 392,229	$ 398,985
Deferred Tax Assets, Valuation Allowance	9,550,279	9,791,680				$ 8,500,622
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	358,360	369,231
Development Costs, Period Cost	$ 219,100	699,000
Accounting Standards Update 2015-17 [Member]
Significant Accounting Policies [Line Items]
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent					$ 48,826
Accounting Standards Update 2016-09 [Member]
Significant Accounting Policies [Line Items]
Deferred Tax Assets, Valuation Allowance					9,300,000
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost					$ 352,200
Previous Accounting Guidance [Member]
Significant Accounting Policies [Line Items]
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent		447,811
Deferred Tax Liabilities, Net, Noncurrent		48,826
Maximum [Member]
Significant Accounting Policies [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	10 years
Minimum [Member]
Significant Accounting Policies [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	3 years
UNITED STATES
Significant Accounting Policies [Line Items]
Cash, FDIC Insured Amount	$ 250,000
Cash, Uninsured Amount	3,786,300	7,488,900
IRELAND
Significant Accounting Policies [Line Items]
Cash, FDIC Insured Amount			€ 100,000	£ 75,000
UNITED KINGDOM
Significant Accounting Policies [Line Items]
Cash, Uninsured Amount	$ 956,500	$ 889,800