DISCONTINUED OPERATIONS - Operating Results (Details) - USD ($) $ in Thousands		3 Months Ended									12 Months Ended
		Aug. 01, 2020	[2]	May 02, 2020	Feb. 01, 2020	Nov. 02, 2019	Aug. 03, 2019	Apr. 27, 2019	Jan. 26, 2019	Oct. 27, 2018	Aug. 01, 2020		Aug. 03, 2019		Jul. 28, 2018
Discontinued Operations and Disposal Groups [Abstract]
Net sales											$ 228,523		$ 440,450	[1]
Cost of sales											162,099		312,200	[1]
Gross profit											66,424		128,250	[1]
Operating expenses											52,625		105,981	[1]
Restructuring expenses and charges											33,470		24,944	[1]
Operating loss											(19,671)		(2,675)	[1]
Other (income) expense, net											(4)
Other (income) expense, net	[1]												150
Loss from discontinued operations before income taxes											(19,667)		(2,825)	[1]
Benefit for income taxes											(4,465)		(3,723)	[1]	$ 0
(Loss) income from discontinued operations, net of tax		$ 926		$ (4,078)	$ (16,076)	$ 4,026	$ (2,386)	$ 651	$ 2,345	$ 288	$ (15,202)	[2]	$ 898	[1]	$ 0

[1] These results reflect retail operations from the Supervalu acquisition date of October 22, 2018 to August 3, 2019.

[2] Fiscal 2020 results reflect 52 weeks of operating results, as compared to fiscal 2019 53 weeks. The fourth quarter of fiscal 2020 includes 13 weeks and the fourth quarter of fiscal 2019 contains 14 weeks.