Warrant Liabilities (Tables)

12 Months Ended

Dec. 31, 2015

Warrant Liabilities [Abstract]

Schedule Of Weighted-Average Assumptions

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

	Year Ended December 31,
	2015			2014			2013
Risk-free interest rate		0.57	%		0.46	%		0.13% - 0.58	%
Expected dividend yield		0	%		0	%		0	%
Expected lives		0.59			1.59			0.95 – 2.59
Expected volatility		61.7	%		89.7	%		83.4% - 95.3	%
Number of warrants classified as liabilities		6,371,854			6,371,854			6,984,716
Gain (Loss) on warrant liabilities	$	4,437,628		$	19,051,239		$	(20,210,094	)