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FINANCIAL INSTRUMENTS AND RISKS & UNCERTAINTIES (Details Textuals)
In Thousands, unless otherwise specified
12 Months Ended
Jul. 31, 2012
USD ($)
Jul. 31, 2011
USD ($)
May 26, 2010
Jpy Loan Due Fiscal Year 2015 [Member]
JPY (¥)
Derivative [Line Items]      
Notional amount of foreign currency forward contracts $ 517,124    
Fair value of foreign currency forward contracts 2,321    
Loan obtained during the fourth quarter     9,000,000
Notional amount of foreign currency forward contracts entered during the period 2,781,113 2,403,274  
Notional amount of foreign currency cash flow hedges $ 77,557 $ 0