EQUITY PLANS (Details 3) - Stock options - USD ($)	12 Months Ended
	Aug. 01, 2015	Aug. 02, 2014	Aug. 03, 2013
Number of Options
Outstanding at beginning of year (in shares)	459,074
Granted (in shares)	76,940
Exercised (in shares)	(91,498)
Outstanding at end of year (in shares)	444,516	459,074
Exercisable at end of year (in shares)	253,005
Weighted Average Exercise Price
Outstanding at beginning of year (in dollars per share)	$ 42.10
Granted (in dollars per share)	64.55
Exercised (in dollars per share)	37.32
Outstanding at end of year (in dollars per share)	46.97	$ 42.10
Exercisable at end of year (in dollars per share)	$ 36.11
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	$ 3,232,768
Exercisable at end of year	$ 3,096,247
Weighted average grant-date fair value of options granted (in dollars per share)	$ 14.82	$ 16.48	$ 12.21
Aggregate intrinsic value of options exercised	$ 3,100,000	$ 2,500,000	$ 1,600,000