PENSION PLANS - Schedule of Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 28, 2018	Apr. 29, 2017	Apr. 28, 2018	Apr. 29, 2017
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 65	$ 61	$ 195	$ 316
Interest cost on projected benefit obligations	629	607	1,887	1,817
Expected return on plan assets	(820)	(973)	(2,460)	(2,920)
Amortization of net losses	142	347	426	1,102
Net periodic pension cost	$ 16	$ 42	$ 48	$ 315