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Note 1 - Summary of Significant Accounting Policies (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended |  |  | 12 Months Ended
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Aug. 31, 2013 | Aug. 25, 2012 | Aug. 27, 2011 | Aug. 31, 2013 Share Based Awards [Member] | Aug. 25, 2012 Share Based Awards [Member] | Aug. 27, 2011 Share Based Awards [Member] | Aug. 31, 2013 Employee Stock Option [Member] | Aug. 25, 2012 Employee Stock Option [Member] | Aug. 31, 2013 2010 Plan [Member] | Aug. 31, 2013 Stock Options, Non-Employee [Member] | Aug. 29, 2009 Stock Options, Non-Employee [Member] | Aug. 31, 2013 Definite-Lived Intangible Assets [Member] | Aug. 31, 2013 Customer Contracts [Member] | Aug. 31, 2013 Finite Lived Intangible Asset [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Reporting Segments | 5 |  |  |  |  |  |  |  |  |  |  |  |  |
Inventory, Raw Materials, Gross (in Dollars) | $ 16.7 | $ 18.2 |  |  |  |  |  |  |  |  |  |  |  |
Inventory, Work in Process, Gross (in Dollars) | 2.4 | 1.0 |  |  |  |  |  |  |  |  |  |  |  |
Inventory, Finished Goods, Gross (in Dollars) | 55.3 | 56.2 |  |  |  |  |  |  |  |  |  |  |  |
Rental Merchandise Useful Life Minimum | 6 |  |  |  |  |  |  |  |  |  |  |  |  |
Rental Merchandise Useful Life Maximum | 36 |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  |  |  |  |  |  |  | 14 years 219 days | 14 years 328 days | 5 years 36 days
Site Contingency Discount Rate Lower Range | 2.80% |  |  |  |  |  |  |  |  |  |  |  |  |
Contingency Discount Rate Upper Range | 3.70% |  |  |  |  |  |  |  |  |  |  |  |  |
Site Contingency Discounted Period Lower Range | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |
Site Contingency Discounted Period Upper Range | 30 years |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental Contingencies Inflation Rate | 3.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Range Of Years Discount For Estimated Future Costs To Decommission Its Nuclear Laundry Facilities Minimum Years | 8 years |  |  |  |  |  |  |  |  |  |  |  |  |
Range Of Years Discount For Estimated Future Costs To Decommission Its Nuclear Laundry Facilities Maximum Years | 31 years |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Retirement Obligations Inflation Rate | 3.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Retirement Obligations Discount Rate Lower Range | 7.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Retirement Obligations Discount Rate Upper Range | 7.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Undistributed Earnings of Foreign Subsidiaries (in Dollars) | 101 | 90 | 78 |  |  |  |  |  |  |  |  |  |  |
Advertising Expense (in Dollars) | $ 1.2 | $ 1.5 | $ 1.7 |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) |  |  |  |  |  |  |  | 1,500,000 | 600,000 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  |  |  |  | 5 years |  |  |  | 10 years |  |  |
Share Based Compensation Arrangement By Share Based Payment Award Expiration |  |  |  |  |  |  | 10 years |  |  | 8 years | 8 years |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value (in Dollars per share) |  |  |  | $ 25.09 | $ 18.28 | $ 17.59 |  |  |  |  |  |  |  |
Common Stock, Conversion Basis | one-for-one |  |  |  |  |  |  |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) | 152 |  | 116,487 |  |  |  |  |  |  |  |  |  |  |

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