CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Oct. 24, 2020	Oct. 26, 2019
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income	$ 3,360	$ 2,567
Other comprehensive income:
Unrealized gains on interest rate swaps, net of tax	594	0
Amortization of pension actuarial loss, net of tax	101	101
Comprehensive income	$ 4,055	$ 2,668