PENSION PLANS - Schedule of Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 25, 2020	Apr. 27, 2019	Apr. 25, 2020	Apr. 27, 2019
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 51	$ 53	$ 152	$ 160
Interest cost on projected benefit obligations	512	655	1,643	1,964
Expected return on plan assets	(733)	(721)	(2,061)	(2,162)
Loss on settlement	116	431	1,362	431
Amortization of net losses	144	145	435	437
Net periodic pension cost	$ 90	$ 563	$ 1,531	$ 830