CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2022	Apr. 24, 2021	Apr. 30, 2022	Apr. 24, 2021
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net (loss) income	$ (3,231)	$ 2,574	$ 14,227	$ 10,490
Other comprehensive income:
Unrealized gains on interest rate swaps, net of tax	2,572	953	4,122	2,047
Amortization of pension actuarial loss, net of tax	89	101	265	304
Pension settlement loss, net of tax	8,525	0	8,525	0
Pension remeasurement, net of tax	1,642	0	1,642	0
Comprehensive income	$ 9,597	$ 3,628	$ 28,781	$ 12,841