INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Jul. 25, 2020
Deferred tax assets:
Lease liabilities	$ 106,615	$ 98,149
Tax credit carryforward	0	508
Compensation related costs	4,377	2,945
Pension costs	3,248	1,881
Other	552	752
Total deferred tax assets	114,792	104,235
Deferred tax liabilities:
Tax over book depreciation	22,653	23,626
Lease assets	98,994	92,021
Patronage dividend receivable	4,162	3,133
Investment in partnerships	1,162	1,076
Other	611	178
Total deferred tax liabilities	127,582	120,034
Net deferred tax liability	$ (12,790)	$ (15,799)