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SIGNIFICANT ACCOUNTING POLICIES (Details 7)
12 Months Ended
Aug. 01, 2015
Plan
Equity plans  
Number of employee compensation plans (in plans) 4
Stock options  
Equity plans  
Graded vesting period for employees 4 years
Vesting period for Board of Directors (in years) 6 months
Portion of share-based awards with immediate vesting for Board of Directors 33.33%
Restricted stock awards and units  
Equity plans  
Graded vesting period for employees 4 years
Vesting period for Board of Directors (in years) 2 years
Portion of share-based awards with immediate vesting for Board of Directors 33.33%