Quarterly report pursuant to Section 13 or 15(d)

Warrant Liability (Tables)

v2.4.0.8
Warrant Liability (Tables) (Series A Warrants [Member])
9 Months Ended
Sep. 30, 2013
Series A Warrants [Member]
 
Fair Value, by Balance Sheet Grouping [Table Text Block]
The key assumptions used to value the Series A Warrants were as follows:
 
Assumption
 
September 30,
2013
 
 
December 31,
2012
 
 
Expected price volatility
 
 
95
%
 
 
80
%
 
Expected term (in years)
 
 
4.53
 
 
 
5.27
 
 
Risk-free interest rate
 
 
1.21
%
 
 
0.78
%
 
Dividend yield
 
 
0.00
%
 
 
0.00
%
 
Weighted-average fair value of warrants
 
$
0.42
 
 
$
0.69