Warrant Liabilities (Tables)

3 Months Ended

Mar. 31, 2019

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,
	2019		2018
Risk-free interest rate		—		1.83	%
Expected dividend yield		—		0	%
Expected lives		—		0.30
Expected volatility		—		76.7	%
Warrants classified as liabilities (in shares)		—		2,834,246
Gain on warrant liabilities		—	$	453,412