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Note 8 - Accrued Liabilities (Tables) | 12 Months Ended
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Aug. 30, 2014
Accrued Liabilities [Abstract] |
Schedule of Accrued Liabilities [Table Text Block] |
|  | August 30, 2014 |  |  | August 31, 2013 |
Current liabilities: |  |  |  |  |  |  |  |
Payroll and benefit related |  | $ | 48,978 |  |  | $ | 47,361 |
Insurance related |  |  | 37,683 |  |  |  | 36,095 |
Environmental related |  |  | 5,046 |  |  |  | 5,158 |
Other |  |  | 9,111 |  |  |  | 6,968 |
|  | $ | 100,818 |  |  | $ | 95,582 |
Long-term liabilities: |  |  |  |  |  |  |  |
Benefit related |  | $ | 23,760 |  |  | $ | 19,719 |
Environmental related |  |  | 14,800 |  |  |  | 14,522 |
Asset retirement obligations |  |  | 11,675 |  |  |  | 10,796 |
|  | $ | 50,235 |  |  | $ | 45,037 |
Total accrued liabilities |  | $ | 151,053 |  |  | $ | 140,619 |

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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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