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Goodwill (Tables)
12 Months Ended
Apr. 30, 2012
Summary of Goodwill

Balance, April 30, 2010

   $ 425,514   

Foreign currency translation

     22,607   
  

 

 

 

Balance, April 30, 2011

     448,121   

Foreign currency translation

     (14,310
  

 

 

 

Balance, April 30, 2012

   $ 433,811