CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Oct. 30, 2015	Oct. 31, 2014
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) [Abstract]
Net income	$ 40,865	$ 34,024
Other comprehensive loss before income tax benefit:
Change in fair value of interest rate swaps	(4,882)	(775)
Income tax benefit	1,849	299
Other comprehensive loss, net of tax	(3,033)	(476)
Comprehensive income	$ 37,832	$ 33,548