PENSION PLANS - Schedule of Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 24, 2015	Oct. 25, 2014
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 1,104	$ 910
Interest cost on projected benefit obligations	827	764
Expected return on plan assets	(940)	(928)
Amortization of net losses	482	324
Net periodic pension cost	$ 1,473	$ 1,070