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Note 13 - Commitments and Contingencies (Details) (USD $) |  |  |  | 9 Months Ended
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May 31, 2013 | Aug. 31, 2012 | May 31, 2012 | May 31, 2013 Fiscal 2013 Bonus Plan [Member] Executive Officer [Member] | May 31, 2013 Fiscal 2013 Bonus Plan [Member]
Note 13 - Commitments and Contingencies (Details) [Line Items] |  |  |  |  |
Percentage of Company's Earnings Before Interest, Taxes, and Other Income Available Under the Bonus Plan, Maximum |  |  |  |  | 25.00%
Adjusted EBITOI As Percentage of Target EBITOI, Threshold To Pay Bonus |  |  |  |  | 70.00%
Percentage of Individual Bonus Payout Determined By Actual Versus Targeted EBITOI Results |  |  |  | 50.00% |
Percentage of Individual's Payout Determined Upon Achievement of Certain Pre-Established Individual Performance Objectives |  |  |  | 50.00% |
Accrued Bonuses (in Dollars) | $ 580,000 |  | $ 1,058,045 |  |
Operating Leases, Future Minimum Payments, Remainder of Fiscal Year (in Dollars) | 59,625 |  |  |  |
Operating Leases, Future Minimum Payments, Due in Two Years (in Dollars) | 59,500 |  |  |  |
Operating Leases, Future Minimum Payments, Due Thereafter (in Dollars) | $ 0 |  |  |  |
Entity-Wide Trade Joint Venture Receivables, Three Joint Ventures, Percentage | 67.10% | 55.30% |  |  |

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- Definition If the adjusted EBITOI (EBITO adjusted for amounts to be paid under the bonus plan) falls below this threshold then no cash bonuses will be paid. + References No definition available. + Details
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- Definition Percentage of total trade joint venture receivables accounted for by three joint ventures. + References No definition available. + Details
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- Definition Maximum percentage of EBITOI available as bonus amounts under the bonus plan. + References No definition available. + Details
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- Definition Carrying value as of the balance sheet date of obligations incurred and payable for incentive compensation awarded to employees and directors or earned by them based on the terms of one or more relevant arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 + Details
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