CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 24, 2021	Apr. 25, 2020	Apr. 24, 2021	Apr. 25, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income	$ 2,574	$ 11,152	$ 10,490	$ 15,724
Other comprehensive income:
Unrealized gains on interest rate swaps, net of tax	953	0	2,047	0
Amortization of pension actuarial loss, net of tax	101	100	304	303
Pension settlement loss, net of tax	0	83	0	954
Pension remeasurement, net of tax	0	323	0	(381)
Comprehensive income	$ 3,628	$ 11,658	$ 12,841	$ 16,600