CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 02, 2012	Oct. 28, 2011
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) [Abstract]
Net income	$ 23,192	$ 23,802
Other comprehensive income before income tax expense:
Change in fair value of interest rate swaps	5,501	4,262
Other comprehensive income before income tax expense	5,501	4,262
Income tax expense	2,087	312
Other comprehensive income, net of tax	3,414	3,950
Comprehensive income	$ 26,606	$ 27,752