CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Aug. 01, 2014	Aug. 02, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 163,903	$ 132,128	$ 117,265
Other comprehensive income before income tax expense:
Change in fair value of interest rate swaps	1,641	3,058	23,620
Income tax expense	633	1,179	9,074
Other comprehensive income, net of tax	1,008	1,879	14,546
Comprehensive income	$ 164,911	$ 134,007	$ 131,811