Quarterly report pursuant to sections 13 or 15(d)

STOCK WARRANTS (Tables)

v2.4.0.8
STOCK WARRANTS (Tables)
9 Months Ended
Sep. 30, 2013
Warrants and Rights Note Disclosure [Abstract]  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
The following table summarizes information with respect to outstanding warrants to purchase common stock of the Company at September 30, 2013:
 
Exercise
 
Number
 
Number
 
Expiration
Price
 
Outstanding
 
Vested
 
Date
$
4.25
 
 
3,189,200
 
 
3,189,200
 
August 2018
 
8.00
 
 
406,875
 
 
406,875
 
December 2013
 
12.00
 
 
456,009
 
 
453,309
 
December 2017 to January 2018
 
20.00
 
 
15,288
 
 
15,288
 
January 2014 to January 2015
 
25.00
 
 
354,228
 
 
354,228
 
January 2017 to March 2019
 
 
 
 
4,421,600
 
 
4,418,900
 
 
Schedule Of Share Based Payment Award Stock Warrants Valuation Assumptions [Table Text Block]
The assumptions used in the valuation of warrants, which vested during the three and nine months ended September 30, 2013, were as follows:
 
 
 
Three Months Ended 
 
 
Weighted Average Nine Months 
 
 
 
September 30, 2013
 
 
Ended September 30, 2013
 
Risk-free interest rate
 
 
1.38
%
 
 
0.94
%
Life of warrant
 
 
4.25 years
 
 
 
4.50 years
 
Expected stock price volatility
 
 
91.31
%
 
 
96.69
%
Expected dividend yield
 
$
0.0
 
 
 
0.0