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TREASURY STOCK (Detail Textuals) (USD $)
In Thousands, unless otherwise specified
0 Months Ended 3 Months Ended 6 Months Ended
Sep. 26, 2011
Oct. 16, 2008
Jan. 31, 2012
Jan. 31, 2012
Jan. 31, 2011
Stockholders' Equity Note [Abstract]          
Additional expenditure to repurchase shares, Authorized $ 250,000 $ 350,000      
Payments for Repurchase of Common Stock       0 29,538
Stock Repurchase Program, Remaining Authorized Repurchase Amount     $ 453,037    
Shares issued for stock plans       613  
Treasury stock, shares     12,350 12,350