Income Taxes - Components of Deferred Income Taxes (Details) - USD ($) $ in Thousands	Aug. 26, 2023	Aug. 27, 2022
Deferred tax assets
Payroll and benefit related	$ 15,284	$ 14,923
Insurance related	14,347	15,035
Environmental	7,542	8,212
Accrued expenses	7,847	8,170
Operating lease liabilities	16,162	11,471
Research and development	3,628
Other	11,916	9,841
Total deferred tax assets	76,726	67,652
Deferred tax liabilities
Payroll and benefit related	22,230	20,588
Tax in excess of book depreciation	53,597	40,016
Purchased intangible assets	43,994	39,747
Rental merchandise in service	62,562	55,287
Operating lease right-of-use assets	15,600	11,111
Other	488	232
Total deferred tax liabilities	198,471	166,981
Net deferred tax liability	$ 121,745	$ 99,329