EMPLOYEE BENEFIT PLANS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 31, 2010
Employee Benefit Plans [Abstract]
Company's contribution	$ 1.2	$ 1.0	$ 1.2
Number of employees covered by collective-bargaining agreements	225
Maximum annual contribution per employee, percent (in hundredths)	15.00%
Multiemployer plan period contributions	$ 2.9	$ 3.8	$ 5.5
Percentage of contribution by employer of each employee's contribution up to 5%	0.30