Note 4 - Income Taxes (Details) - Components of Deferred Tax Assets and Liabilities (Incomplete) (USD $) In Thousands, unless otherwise specified	Aug. 30, 2014	Aug. 31, 2013
Components of Deferred Tax Assets and Liabilities (Incomplete) [Abstract]
Payroll and benefit related	$ 16,216	$ 16,524
Insurance related	13,935	13,073
Environmental	7,765	7,133
Other	13,682	11,421
Total deferred tax assets	51,598	48,151
Tax in excess of book depreciation	37,152	42,512
Purchased intangible assets	31,100	28,632
Rental merchandise in service	52,745	38,722
Total deferred tax liabilities	120,997	109,866
Net deferred tax liability	$ 69,399	$ 61,715