Annual report pursuant to Section 13 and 15(d)

STOCK WARRANTS (Tables)

v2.4.1.9
STOCK WARRANTS (Tables)
12 Months Ended
Dec. 31, 2014
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, all of which were vested and exercisable, at December 31, 2014: 
 
Exercise
 
Number
 
Expiration
 
Price
 
Outstanding
 
Date
 
$
4.25
 
 
920,979
 
August 2018
 
$
12.00
 
 
456,009
 
December 2017 to February 2018
 
$
20.00
 
 
14,538
 
January 2015
 
$
25.00
 
 
354,229
 
January 2017 to February 2019
 
 
 
 
 
1,745,755
 
 
 
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]
The assumptions used in the valuation of warrants, which vested during the year ended December 31, 2013, were as follows:
 
Risk-free interest rate
 
 
0.77 to 1.75
%
Life of warrant
 
 
4.75 to 4.01 years
 
Expected stock price volatility
 
 
91.31% to 102.46
%
Expected dividend yield
 
$
0.0