PENSION PLANS - Schedule of Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 23, 2021	Jan. 25, 2020	Jan. 23, 2021	Jan. 25, 2020
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 54	$ 50	$ 108	$ 101
Interest cost on projected benefit obligations	422	566	844	1,131
Expected return on plan assets	(483)	(625)	(966)	(1,328)
Loss on settlement	0	1,246	0	1,246
Amortization of net losses	147	146	294	291
Net periodic pension cost	$ 140	$ 1,383	$ 280	$ 1,441