|  
                Year  
            |  
         
             Beginning Price  
            |  
         
             Ending Price  
            |  
         
             Gain or Loss 
            |  
         
             Percent Gain or Loss  
            |  
      
|  
           2005 
            |  
         
           17.58 
            |  
         
           23.82 
            |  
         
           6.24 
            |  
         
           35.49% 
            |  
      
|  
           2006 
            |  
         
           23.82 
            |  
         
           25.24 
            |  
         
           1.42 
            |  
         
           5.96% 
            |  
      
|  
           2007 
            |  
         
           25.24 
            |  
         
           17.17 
            |  
         
           -8.10 
            |  
         
           -32.09% 
            |  
      
|  
           2008 
            |  
         
           17.17 
            |  
         
           4.99 
            |  
         
           -12.18 
            |  
         
           -70.94% 
            |  
      
|  
           2009 
            |  
         
           4.99 
            |  
         
           16.83 
            |  
         
           11.84 
            |  
         
           237.27% 
            |  
      
|  
           2010 
            |  
         
           16.83 
            |  
         
           27.24 
            |  
         
           10.44 
            |  
         
           62.03% 
            |  
      
|  
           2011 
            |  
         
           27.24 
            |  
         
           21.38 
            |  
         
           -5.86 
            |  
         
           -21.51% 
            |  
      
|  
           2012 
            |  
         
           21.38 
            |  
         
           36.75 
            |  
         
           15.37 
            |  
         
           71.89% 
            |  
      
|  
           2013 
            |  
         
           36.75 
            |  
         
           56.7367** 
            |  
         
           19.9867 
            |  
         
           54.39% 
            |