PENSION PLANS - Schedule of Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 30, 2021	Oct. 24, 2020
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 47	$ 54
Interest cost on projected benefit obligations	420	422
Expected return on plan assets	(409)	(483)
Amortization of net losses	126	147
Net periodic pension cost	$ 184	$ 140