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Note 12 - Segment and Geographic Information (Tables) | 3 Months Ended
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Nov. 30, 2024
Notes Tables |
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended November 30, |
|  | 2024 |  |  | 2023 |
ZERUST® net sales |  | $ | 15,475,803 |  |  | $ | 15,405,745 |
Natur-Tec® net sales |  |  | 5,862,590 |  |  |  | 4,775,930 |
Total net sales |  | $ | 21,338,393 |  |  | $ | 20,181,675 |
Reconciliation of Cost of Goods Sold from Segments to Consolidated [Table Text Block] |
|  | November 30, 2024 |  |  | % of Product Sales* |  |  | November 30, 2023 |  |  | % of Product Sales* |
Direct cost of goods sold |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ZERUST® |  | $ | 8,678,706 |  |  |  | 56.1 | % |  | $ | 8,744,024 |  |  |  | 56.8 | %
Natur-Tec® |  |  | 3,689,183 |  |  |  | 62.9 | % |  |  | 3,228,583 |  |  |  | 67.6 | %
Indirect cost of goods sold |  |  | 807,551 |  |  | NA |  |  |  | 874,794 |  |  | NA |
Total net cost of goods sold |  | $ | 13,175,440 |  |  |  |  |  |  | $ | 12,847,401 |  |  |  |  |
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
|  | Three Months Ended November 30, |
|  | 2024 |  |  | 2023 |
Inside the U.S. to unaffiliated customers |  | $ | 13,088,319 |  |  | $ | 12,097,843 |
Outside the U.S. to: |  |  |  |  |  |  |  |
Joint ventures in which the Company is a shareholder directly and indirectly |  |  | 767,456 |  |  |  | 851,452 |
Unaffiliated customers |  |  | 7,482,618 |  |  |  | 7,232,380 |
|  | $ | 21,338,393 |  |  | $ | 20,181,675 |
|  | Three Months Ended November 30, |
|  | 2024 |  |  | % of Total Fees for Services Provided to Joint Ventures |  |  | 2023 |  |  | % of Total Fees for Services Provided to Joint Ventures |
Poland |  | $ | 220,010 |  |  |  | 17.1 | % |  | $ | 198,017 |  |  |  | 15.9 | %
Germany |  |  | 206,329 |  |  |  | 16.1 | % |  |  | 205,643 |  |  |  | 16.5 | %
Japan |  |  | 148,538 |  |  |  | 11.6 | % |  |  | 136,081 |  |  |  | 10.9 | %
Finland |  |  | 131,460 |  |  |  | 10.2 | % |  |  | 103,744 |  |  |  | 8.3 | %
United Kingdom |  |  | 116,226 |  |  |  | 9.1 | % |  |  | 63,149 |  |  |  | 5.1 | %
Thailand |  |  | 94,165 |  |  |  | 7.3 | % |  |  | 79,438 |  |  |  | 6.4 | %
France |  |  | 79,064 |  |  |  | 6.2 | % |  |  | 121,966 |  |  |  | 9.8 | %
Czech Republic |  |  | 72,631 |  |  |  | 5.7 | % |  |  | 77,812 |  |  |  | 6.2 | %
South Korea |  |  | 67,701 |  |  |  | 5.3 | % |  |  | 74,957 |  |  |  | 6.0 | %
Sweden |  |  | 66,928 |  |  |  | 5.2 | % |  |  | 110,536 |  |  |  | 8.9 | %
Other |  |  | 81,067 |  |  |  | 6.3 | % |  |  | 77,615 |  |  |  | 6.2 | %
|  | $ | 1,284,119 |  |  |  | 100.0 | % |  | $ | 1,248,958 |  |  |  | 100.0 | %
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] |
|  | At November 30, 2024 |  |  | At August 31, 2024 |
China |  | $ | 5,453,786 |  |  | $ | 5,627,202 |
Other |  |  | 1,212,917 |  |  |  | 1,217,400 |
United States |  |  | 10,386,536 |  |  |  | 9,421,051 |
Total property and equipment, net |  | $ | 17,053,239 |  |  | $ | 16,265,653 |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Three Months Ended November 30, |
|  | 2024 |  |  | 2023 |
China |  | $ | 3,994,769 |  |  | $ | 3,678,523 |
Brazil |  |  | 1,385,194 |  |  |  | 1,529,623 |
India |  |  | 6,045,735 |  |  |  | 5,180,391 |
Other |  |  | 2,430,077 |  |  |  | 2,560,757 |
United States |  |  | 7,482,618 |  |  |  | 7,232,381 |
Total net sales |  | $ | 21,338,393 |  |  | $ | 20,181,675 |

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