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Restructuring (Reconciliation Of Restructuring Reserves) (Details) (USD $)
In Thousands
12 Months Ended
Jul. 31, 2011
Jul. 31, 2010
Jul. 31, 2009
Jul. 31, 2008
Restructuring        
Accruals for restructuring during the reporting period $ 759 $ 8,023 $ 17,755  
Less settlements made during the period (4,898) (7,724) (13,915)  
Ending Balance   $ 4,139 $ 3,840