|  
                Year  
            |  
         
             Beginning Price  
            |  
         
             Ending Price  
            |  
         
             Gain or Loss 
            |  
         
             Percent Gain or Loss  
            |  
      
|  
           2012 
            |  
         
           19.70 
            |  
         
           21.54 
            |  
         
           1.84 
            |  
         
           9.34% 
            |  
      
|  
           2013 
            |  
         
           21.54 
            |  
         
           43.15 
            |  
         
           21.61 
            |  
         
           100.32% 
            |  
      
|  
           2014 
            |  
         
           43.15 
            |  
         
           17.96 
            |  
         
           -25.19 
            |  
         
           -58.38% 
            |  
      
|  
           2015 
            |  
        
           17.96 
            |  
         
           15.72 
            |  
         
           -2.24 
            |  
         
           -12.47% 
            |  
      
|  
           2016 
            |  
         
           15.72 
            |  
         
           20.13 
            |  
         
           4.41 
            |  
         
           28.05% 
            |  
      
|  
           2017 
            |  
         
           20.13 
            |  
         
           32.75 
            |  
         
           12.62 
            |  
         
           62.69% 
            |  
      
|  
           2018 
            |  
        
           32.75 
            |  
         
           27.35 
            |  
         
           -5.40 
            |  
         
           -16.49% 
            |  
      
|  
           2019 
            |  
        
           27.35 
            |  
         
           43.49 
            |  
         
           16.14 
            |  
         
           59.01% 
            |  
      
|  
           2020 
            |  
        
           43.49 
            |  
         
           69.58 
            |  
         
           26.09 
            |  
         
           59.99% 
            |  
      
|  
           2021 
            |  
        
           69.58 
            |  
         
           60.50 
            |  
         
           -9.08 
            |  
         
           -13.05% 
            |  
      
|  
           2022 
            |  
        
           60.50 
            |  
         
           18.94* 
            |  
         
           -41.56 
            |  
         
           -68.69% 
            |  
      
|  
           2023 
            |  
        
           18.94* 
            |  
         
           18.94* 
            |  
         
           0 
            |  
         
           0.00% 
            |  
      
|  
           2024 
            |  
        
           18.94* 
            |  
         
           27.70 
            |  
         
           8.76 
            |  
         
           46.25% 
            |