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Note 17 - Income Taxes (Details Textual) - USD ($) | 12 Months Ended
--- | ---
Aug. 31, 2015 | Aug. 31, 2014 | Aug. 31, 2013
Deferred Tax Expenses Related to Undistributed Earnings of Foreign Joint Ventures [Member] |  |  |
Deferred Income Tax Expense (Benefit) | $ 79,000 |  |
Foreign Tax Authority [Member] |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration | 187,400 |  |
Tax Credit Carryforward, Valuation Allowance | 4,654,800 | $ 4,141,100 |
Federal and State Tax [Member] |  |  |
Operating Loss Carryforwards | 2,235,200 |  |
Tax Credit Carryforward, Valuation Allowance | 2,335,100 | 1,919,800 |
Capital Loss Carryforward [Member] |  |  |
Deferred Tax Assets, Capital Loss Carryforwards | 26,800 |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 0 | 0 |
Undistributed Earnings of Foreign Subsidiaries | 18,483,377 | 20,540,523 | $ 22,281,510
Deferred Income Tax Expense (Benefit) | 144,000 | (95,000) | $ 125,000
Deferred Tax Assets, Tax Credit Carryforwards, Foreign | $ 4,654,800 | 4,141,100 |
Deferred Tax Assets, Capital Loss Carryforwards |  | $ 50,900 |

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- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6510177 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.7) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Subsection 7 + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=51675352&loc=d3e28680-109314 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 + Details
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