Warrant Liabilities (Tables)

3 Months Ended

Mar. 31, 2018

Warrant Liabilities [Abstract]

Schedule of Weighted-average Assumptions

The following reflects the weighted-average assumptions for each of the three-month periods indicated:

	Three Months Ended March 31,
	2018			2017
Risk-free interest rate		1.83	%		1.05	%
Expected dividend yield		0	%		0	%
Expected lives		0.30			0.98
Expected volatility		76.7	%		95.1	%
Warrants classified as liabilities (in shares)		2,834,246			4,752,512
Gain (loss) on warrant liabilities	$	453,412		$	(32,119	)