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Note 11 - Geographic And Segment Information (Tables) | 3 Months Ended
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Nov. 30, 2012
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
|  | Three Months Ended |
|  | November 30, 2012 |  |  | November 30, 2011 |
Inside the U.S.A. to unaffiliated customers |  |  | 71.2 | % |  |  | 68.1 | %
Outside the U.S.A. to: |  |  |  |  |  |  |  |
Joint ventures in which the Company is a shareholder directly and indirectly |  |  | 15.3 |  |  |  | 15.7 |
Unaffiliated customers |  |  | 13.5 |  |  |  | 16.2 |
|  |  | 100.0 | % |  |  | 100.0 | %
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended |
|  | November 30, 2012 |  |  | November 30, 2011 |
ZERUST® sales |  | $ | 4,795,283 |  |  | $ | 4,452,646 |
Natur-Tec® sales |  |  | 496,464 |  |  |  | 379,468 |
Total net sales |  | $ | 5,291,747 |  |  | $ | 4,832,114 |
Reconciliation of Cost of Good Sold from Segments to Consolidated [Table Text Block] |
|  | November 30, 2012 |  |  | % of Product Sales* |  |  | November 30, 2011 |  |  | % of Product Sales* |
Direct cost of goods sold |  |  |  |  |  |  |  |  |  |  |  |
ZERUST® |  | $ | 2,644,295 |  |  |  | 55.1 | % |  | $ | 2,457,799 |  |  |  | 55.2 | %
Natur-Tec® |  |  | 439,673 |  |  |  | 88.6 | % |  |  | 296,561 |  |  |  | 78.2 | %
Indirect cost of goods sold |  |  | 607,004 |  |  | NA |  |  |  | 455,116 |  |  | NA |
Total net cost of goods sold |  | $ | 3,690,972 |  |  |  |  |  |  | $ | 3,209,476 |  |  |  |  |
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] |
|  | At November 30, 2012 |
|  | Brazil |  |  | North America |  |  | Total |
Total assets |  | $ | 1,525,725 |  |  | $ | 45,619,817 |  |  | $ | 47,105,308 |
|  | At August 31, 2012 |
|  | Brazil |  |  | North America |  |  | Total |
Total assets |  | $ | 1,744,693 |  |  | $ | 40,132,934 |  |  | $ | 41,877,627 |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
|  | Three Months Ended November 30, 2012 |
|  | Brazil |  |  | North America |  |  | Total |
Net sales |  | $ | 551,814 |  |  | $ | 4,739,933 |  |  | $ | 5,291,747 |
Operating income |  | $ | (23,148 | ) |  | $ | 896,812 |  |  | $ | 873,664 |
|  | Three Months Ended November 30, 2011 |
|  | Brazil |  |  | North America |  |  | Total |
Net sales |  | $ | 604,920 |  |  | $ | 4,227,194 |  |  | $ | 4,832,114 |
Operating income |  | $ | (155,174 | ) |  | $ | 1,187,676 |  |  | $ | 1,032,502 |
Fees For Services Provided to Joint Ventures [Member] |
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended November 30, |
|  | 2012 |  |  | % of Total Fees for Services Provided to Joint Ventures |  |  | 2011 |  |  | % of Total Fees for Services Provided to Joint Ventures |
China* |  | $ | 493,312 |  |  |  | 26.7 | % |  | $ | — |  |  |  | 0.0 | %
Germany |  |  | 242,700 |  |  |  | 13.1 | % |  |  | 249,447 |  |  |  | 17.3 | %
Japan |  |  | 201,981 |  |  |  | 10.9 | % |  |  | 288,539 |  |  |  | 20.0 | %
Thailand* |  |  | 153,687 |  |  |  | 8.3 | % |  |  | — |  |  |  | 0.0 | %
Korea** |  |  | 138,742 |  |  |  | 7.5 | % |  |  | 76,465 |  |  |  | 5.3 | %
France |  |  | 128,502 |  |  |  | 7.0 | % |  |  | 141,639 |  |  |  | 9.8 | %
Poland |  |  | 111,472 |  |  |  | 6.0 | % |  |  | 97,828 |  |  |  | 6.8 | %
Finland |  |  | 87,851 |  |  |  | 4.8 | % |  |  | 132,496 |  |  |  | 9.2 | %
Sweden |  |  | 86,992 |  |  |  | 4.7 | % |  |  | 156,657 |  |  |  | 10.8 | %
United Kingdom |  |  | 67,058 |  |  |  | 3.6 | % |  |  | 79,499 |  |  |  | 5.5 | %
India |  |  | — |  |  |  | 0.0 | % |  |  | 136,155 |  |  |  | 9.4 | %
Other |  |  | 133,980 |  |  |  | 7.4 | % |  |  | 86,527 |  |  |  | 6.0 | %
|  | $ | 1,846,277 |  |  |  | 100.0 | % |  | $ | 1,445,252 |  |  |  | 100.0 | %

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- Definition Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph b(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27, 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8721-108599 + Details
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