Warrant Liabilities (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Derivative [Line Items]
Gain (loss) on warrant derivative liabilities	$ 453,412	$ (32,119)
Warrants [Member]
Derivative [Line Items]
Risk-free interest rate	1.83%	1.05%
Expected dividend yield	0.00%	0.00%
Expected lives	3 months 18 days	11 months 23 days
Expected volatility	76.70%	95.10%
Warrants classified as liabilities (in shares)	2,834,246	4,752,512
Gain (loss) on warrant derivative liabilities	$ 453,412	$ (32,119)