Warrant Liabilities (Tables)

6 Months Ended

Jun. 30, 2018

Warrant Liabilities [Abstract]

Schedule of Weighted-average Assumptions

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

	Six Months Ended June 30,
	2018			2017
Risk-free interest rate		1.77	%		1.13	%
Expected dividend yield		0	%		0	%
Expected lives		0.05			0.79
Expected volatility		50.2	%		125.3	%
Warrants classified as liabilities (in shares)		2,834,246			4,018,430