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Investments and Fair Value Measurements (Tables)
3 Months Ended
Oct. 31, 2012
Assets Measured At Fair Value Using Significant Unobservable Inputs

The following table provides a reconciliation of the beginning and ending balance for the assets measured at fair value using significant unobservable inputs (Level 3 financial assets):

 

     Fair Value Measurements at
Reporting Date Using
Significant Unobservable
Inputs

(Level 3)
 

Balance at July 31, 2012

   $ 1,405   

Net change in other comprehensive income

     2   
  

 

 

 

Balance at October 31, 2012

   $ 1,407