Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation (Tables)

v2.4.0.8
Stock Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2013
Stock Based Compensation [Abstract]  
Summarization of stock-based compensation
The following table summarizes stock-based compensation for the three and six months ended June 30, 2013 and 2012:
 
   
Three months ended
June 30,
    
Six months ended
June 30,
  
   
2013
    
2012
    
2013
    
2012
  
Research and development
   $ 10,000     $ 33,000     $ 19,000     $ 74,000  
Selling, general and administrative
     241,000       75,000       309,000       148,000  
Stock-based compensation expense
  included in operating expense
   $ 251,000     $ 108,000     $ 328,000     $ 222,000  
 
Weighted average Black Scholes fair value assumptions
Our weighted average Black-Scholes fair value assumptions used to value the grants in the first six months of 2012 are as follows:
 
     
 
6/30/12
  
Expected life(b)
  5.5 yrs
  
Risk free interest rate
  0.6
%
Expected volatility(a)
  96
%
Expected dividend yield
  0.0
%
 
(a)
Reflects movements in our stock price over the most recent historical period equivalent to the expected life.
(b)
Based on the simplified method.