CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 23, 2021	Jan. 25, 2020	Jan. 23, 2021	Jan. 25, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income	$ 4,555	$ 2,005	$ 7,916	$ 4,572
Other comprehensive income:
Unrealized gains on interest rate swaps, net of tax	501	0	1,094	0
Amortization of pension actuarial loss, net of tax	101	102	203	203
Pension settlement loss, net of tax	0	871	0	871
Pension remeasurement, net of tax	0	(704)	0	(704)
Comprehensive income	$ 5,157	$ 2,274	$ 9,213	$ 4,942