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Goodwill
12 Months Ended
Jul. 31, 2011
Goodwill and Intangible Assets Disclosure [Abstract] 
Goodwill
(7)
  Goodwill

The change in carrying amount of goodwill is as follows (in thousands):

Balance as of July 31, 2009
              $ 166,327   
Goodwill recorded during the period
                 12,599   
Effect of foreign currency translation
                 (3,056 )  
Balance as of July 31, 2010
              $ 175,870   
Goodwill recorded during the period
                 19,309   
Effect of foreign currency translation
                 3,441   
Balance as of July 31, 2011
              $ 198,620   
 

In accordance with the guidance in ASC 350, goodwill is tested for impairment on an annual basis or upon the occurrence of circumstances that indicate that goodwill may be impaired. The Company’s annual impairment tests were performed in the fourth quarter of fiscal 2011 and 2010 and goodwill was not impaired. As of July 31, 2011 and 2010, the cumulative amount of goodwill impairment losses recognized totaled $21.8 million.