EQUITY PLANS (Details 3) (Stock options, USD $)	12 Months Ended
	Aug. 02, 2014	Aug. 03, 2013	Jul. 28, 2012
Stock options
Number of Options
Outstanding at beginning of year (in shares)	474,237
Granted (in shares)	62,090
Exercised (in shares)	(67,930)
Forfeited (in shares)	(9,323)
Outstanding at end of year (in shares)	459,074	474,237
Exercisable at end of year (in shares)	268,338
Weighted Average Exercise Price
Outstanding at beginning of year (in dollars per share)	$ 37.25
Granted (in dollars per share)	$ 67.48
Exercised (in dollars per share)	$ 32.60
Forfeited (in dollars per share)	$ 33.58
Outstanding at end of year (in dollars per share)	$ 42.10	$ 37.25
Exercisable at end of year (in dollars per share)	$ 32.56
Weighted Average Remaining Contractual Term
Outstanding at end of year	6 years 1 month 6 days
Exercisable at end of year	4 years 7 months 6 days
Aggregate Intrinsic Value
Outstanding at end of year	$ 8,196,719
Exercisable at end of year	7,022,823
Weighted average grant-date fair value of options granted (in dollars per share)	$ 16.48	$ 12.21	$ 10.27
Aggregate intrinsic value of options exercised	$ 2,500,000	$ 1,600,000	$ 5,200,000