PENSION PLANS - Schedule of Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 27, 2019	Apr. 28, 2018	Apr. 27, 2019	Apr. 28, 2018
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 53	$ 65	$ 160	$ 195
Interest cost on projected benefit obligations	655	629	1,964	1,887
Expected return on plan assets	(721)	(820)	(2,162)	(2,460)
Loss on settlement	430	0	431	0
Amortization of net losses	145	142	437	426
Net periodic pension cost	$ 562	$ 16	$ 830	$ 48