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Note 10 - Asset Retirement Obligations (Tables) | 12 Months Ended
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Aug. 31, 2013
Asset Retirement Obligation Disclosure [Abstract] |
Schedule of Asset Retirement Obligations [Table Text Block] |
| August 31, 2013 | August 25, 2012
Beginning balance |  |  | $ | 10,120 |  | $ | 9,488 |
Accretion expense |  |  |  | 676 |  |  | 632 |
Ending balance |  |  | $ | 10,796 |  | $ | 10,120 |

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- Definition Tabular disclosure of the carrying amount of a liability for asset retirement obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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