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EQUITY PLANS (Details 4) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jul. 30, 2016
Aug. 01, 2015
Aug. 02, 2014
Restricted stock awards and units      
Number of Shares      
Outstanding at July 28, 2012 (in shares) 621,232    
Granted (in shares) 571,638    
Vested (in shares) (256,210)    
Forfeited (in shares) (202,863)    
Outstanding at August 3, 2013 (in shares) 733,797 621,232  
Weighted Average Grant-Date Fair Value      
Outstanding at July 28, 2012 (in dollars per share) $ 61.60    
Granted (in dollars per share) 50.44    
Vested (in dollars per share) 56.72    
Forfeited (in dollars per share) 58.19    
Outstanding at August 3, 2013 (in dollars per share) $ 55.55 $ 61.60  
Intrinsic value $ 12.3 $ 17.3 $ 16.9
Graded vesting period for employees 4 years    
Performance-based share awards      
Number of Shares      
Granted (in shares)     22,229
Vested (in shares)     (19,396)
Weighted Average Grant-Date Fair Value      
Number of additional shares issued if performance exceeded specified targeted levels 29,115 23,238 22,229
Fair value of restricted shares and units vested     $ 1.1
Performance units      
Number of Shares      
Granted (in shares)   23,238  
Weighted Average Grant-Date Fair Value      
Intrinsic value     $ 1.3
Number of additional shares issued if performance exceeded specified targeted levels 29,115    
Performance Shares Units      
Weighted Average Grant-Date Fair Value      
Granted (in dollars per share) $ 51.52 $ 64.55 $ 67.48
Intrinsic value $ 0.0   $ 1.3
New performance-based equity compensation arrangement with performance-based vesting component | Executive-leadership team      
Number of Shares      
Granted (in shares) 0    
Weighted Average Grant-Date Fair Value      
Graded vesting period for employees 2 years    
Percentage of eligibility performance-based stock units based on grant date fair value 30.00%    
Percentage of eligibility performance-based stock units based on annual base salary 125.00%    
Percentage of eligibility performance-based stock units based on cash-based performance award 50.00%    
Percentage of additional grants increased (as a percent) 100.00%