INCOME TAXES - Summary of Positions for which Significant Change in Unrecognized Tax Benefit is Reasonably Possible (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 03, 2019	Jul. 28, 2018	Jul. 29, 2017
Income Tax Disclosure [Abstract]
Unrecognized tax benefits at beginning of period	$ 1,104	$ 478	$ 360
Unrecognized tax benefits added during the period	0	626	583
Unrecognized tax benefits assumed in a business combination	49,566	0	0
Decreases in unrecognized tax benefits due to statute expiration and payments	(10,528)	0	(465)
Unrecognized tax benefits at end of period	$ 40,141	$ 1,104	$ 478