|  
                Year  
            |  
         
             Beginning Price  
            |  
         
             Ending Price  
            |  
         
             Gain or Loss 
            |  
         
             Percent Gain or Loss  
            |  
      
|  
           1999 
            |  
         
           6.25 
            |  
         
           3.00 
            |  
         
           -3.25 
            |  
         
           -52.00% 
            |  
      
|  
           2000 
            |  
         
           3.00 
            |  
         
           2.1875 
            |  
         
           -0.8125 
            |  
         
           -27.08% 
            |  
      
|  
           2001 
            |  
         
           2.1875 
            |  
         
           4.32 
            |  
         
           2.1325 
            |  
         
           97.49% 
            |  
      
|  
           2002 
            |  
         
           4.32 
            |  
         
           2.16 
            |  
         
           -2.16 
            |  
         
           -50.00% 
            |  
      
|  
           2003 
            |  
         
           2.16 
            |  
         
           1.99 
            |  
         
           -0.17 
            |  
         
           -7.87% 
            |  
      
|  
           2004 
            |  
         
           1.99 
            |  
         
           5.41 
            |  
         
           3.42 
            |  
         
           171.86% 
            |  
      
|  
           2005 
            |  
         
           5.41 
            |  
         
           14.16 
            |  
         
           8.75 
            |  
         
           161.74% 
            |  
      
|  
           2006 
            |  
         
           14.16 
            |  
         
           15.48 
            |  
         
           1.32 
            |  
         
           9.32% 
            |  
      
|  
           2007 
            |  
         
           15.48 
            |  
         
           26.51 
            |  
         
           11.03 
            |  
         
           71.25% 
            |  
      
|  
           2008 
            |  
         
           26.51 
            |  
         
           11.37 
            |  
         
           -15.14 
            |  
         
           -57.11% 
            |  
      
|  
           2009 
            |  
         
           11.37 
            |  
         
           13.30 
            |  
         
           1.93 
            |  
         
           16.97% 
            |  
      
|  
           2010 
            |  
         
           13.30 
            |  
         
           15.99 
            |  
         
           2.69 
                
           |  
         
           20.23% 
                
           |  
      
|  
           2011 
            |  
         
           15.99 
            |  
         
           17.55 
            |  
         
           1.56 
                
           |  
         
           9.76% 
                
           |  
      
|  
           2012 
            |  
         
           17.55 
            |  
         
           19.34 
            |  
         
           1.79 
                
           |  
         
           10.20% 
                
           |  
      
|  
           2013 
            |  
         
           19.34 
            |  
         
           14.74 
            |  
         
           -4.60 
                
           |  
         
           -23.78% 
                
           |  
      
|  
           2014 
            |  
         
           14.74 
            |  
         
           14.10 
            |  
         
           -0.64 
                
           |  
         
           -4.34% 
                
           |  
      
|  
           2015 
            |  
        
           14.10 
            |  
         
           10.07 
            |  
         
           -4.03 
                
           |  
         
           -28.58% 
                
           |  
      
|  
           2016 
            |  
        
           10.07 
            |  
         
           8.62 
            |  
         
           -1.45 
                
           |  
         
           -14.40% 
                
           |  
      
|  
           2017 
            |  
         
           8.62 
            |  
         
           14.00* 
            |  
         
           5.38 
                
           |  
         
           62.41% 
                
           |