CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 29, 2021	Jan. 31, 2020	Jan. 29, 2021	Jan. 31, 2020
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 14,000	$ 61,168	$ 184,680	$ 104,391
Other comprehensive income (loss) before income tax expense (benefit):
Change in fair value of interest rate swaps	1,420	(2,690)	4,886	(3,235)
Income tax expense (benefit)	354	(641)	1,219	(748)
Other comprehensive income (loss), net of tax	1,066	(2,049)	3,667	(2,487)
Comprehensive income (loss)	$ 15,066	$ 59,119	$ 188,347	$ 101,904