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Note 11 - Segment and Geographic Information (Tables) | 9 Months Ended
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May 31, 2024
Notes Tables |
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | May 31, 2024 |  |  | May 31, 2023 |  |  | May 31, 2024 |  |  | May 31, 2023 |
ZERUST® net sales |  | $ | 14,837,235 |  |  | $ | 16,100,674 |  |  | $ | 45,461,075 |  |  | $ | 45,929,422 |
Natur-Tec® net sales |  |  | 5,848,962 |  |  |  | 4,869,052 |  |  |  | 16,249,335 |  |  |  | 13,263,895 |
Total net sales |  | $ | 20,686,197 |  |  | $ | 20,969,726 |  |  | $ | 61,710,410 |  |  | $ | 59,193,317 |
Reconciliation of Cost of Goods Sold from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | May 31, 2024 |  |  | % of Product Sales* |  |  | May 31, 2023 |  |  | % of Product Sales* |  |  | May 31, 2024 |  |  | % of Product Sales* |  |  | May 31, 2023 |  |  | % of Product Sales* |
Direct cost of goods sold |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ZERUST® |  |  | 8,168,215 |  |  |  | 55.1 | % |  | $ | 9,116,091 |  |  |  | 56.6 | % |  | $ | 24,994,401 |  |  |  | 55.0 | % |  | $ | 26,410,796 |  |  |  | 57.5 | %
Natur-Tec® |  |  | 3,768,921 |  |  |  | 64.4 | % |  |  | 3,576,676 |  |  |  | 73.5 | % |  |  | 10,566,223 |  |  |  | 65.0 | % |  |  | 10,078,385 |  |  |  | 76.0 | %
Indirect cost of goods sold |  |  | 855,967 |  |  |  | — |  |  |  | 697,106 |  |  |  | — |  |  |  | 2,583,254 |  |  |  | — |  |  |  | 2,468,091 |  |  |  | — |
Total net cost of goods sold |  | $ | 12,793,103 |  |  |  |  |  |  | $ | 13,389,873 |  |  |  |  |  |  | $ | 38,143,878 |  |  |  |  |  |  | $ | 38,957,272 |  |  |  |  |
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
|  | Three Months Ended May 31, |  |  | Nine Months Ended May 31, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Inside the U.S.A. to unaffiliated customers |  | $ | 7,086,859 |  |  | $ | 7,729,820 |  |  | $ | 21,160,095 |  |  | $ | 21,958,978 |
Outside the U.S.A. to: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Joint ventures in which the Company is a shareholder directly and indirectly |  |  | 441,067 |  |  |  | 732,437 |  |  |  | 1,904,444 |  |  |  | 2,895,665 |
Unaffiliated customers |  |  | 13,158,272 |  |  |  | 12,507,469 |  |  |  | 38,645,871 |  |  |  | 34,338,674 |
|  | $ | 20,686,197 |  |  | $ | 20,969,726 |  |  | $ | 61,710,410 |  |  | $ | 59,193,317 |
|  | Three Months Ended |
|  | May 31, 2024 |  |  | % of Total Fees for Services Provided to Joint Ventures |  |  | May 31, 2023 |  |  | % of Total Fees for Services Provided to Joint Ventures |
Poland |  | $ | 213,102 |  |  |  | 17.6 | % |  | $ | 224,288 |  |  |  | 16.5 | %
Germany |  |  | 205,853 |  |  |  | 17.0 | % |  |  | 209,398 |  |  |  | 15.4 | %
Japan |  |  | 118,606 |  |  |  | 9.8 | % |  |  | 152,593 |  |  |  | 11.2 | %
Sweden |  |  | 110,542 |  |  |  | 9.1 | % |  |  | 144,981 |  |  |  | 10.7 | %
Czech Republic |  |  | 101,111 |  |  |  | 8.3 | % |  |  | 99,089 |  |  |  | 7.3 | %
Finland |  |  | 97,437 |  |  |  | 8.0 | % |  |  | 103,879 |  |  |  | 7.6 | %
United Kingdom |  |  | 96,872 |  |  |  | 8.0 | % |  |  | 83,586 |  |  |  | 6.1 | %
Thailand |  |  | 77,206 |  |  |  | 6.4 | % |  |  | 82,725 |  |  |  | 6.1 | %
South Korea |  |  | 58,732 |  |  |  | 4.8 | % |  |  | 61,668 |  |  |  | 4.5 | %
France |  |  | 47,206 |  |  |  | 3.9 | % |  |  | 128,149 |  |  |  | 9.4 | %
Other |  |  | 85,830 |  |  |  | 7.1 | % |  |  | 70,953 |  |  |  | 5.2 | %
|  | $ | 1,212,497 |  |  |  | 100.0 | % |  | $ | 1,361,311 |  |  |  | 100.0 | %
|  | Nine Months Ended |
|  | May 31, 2024 |  |  | % of Total Fees for Services Provided to Joint Ventures |  |  | May 31, 2023 |  |  | % of Total Fees for Services Provided to Joint Ventures |
Poland |  | $ | 628,905 |  |  |  | 16.7 | % |  | $ | 610,911 |  |  |  | 16.1 | %
Germany |  |  | 618,236 |  |  |  | 16.4 | % |  |  | 606,189 |  |  |  | 16.0 | %
Japan |  |  | 366,682 |  |  |  | 9.7 | % |  |  | 454,308 |  |  |  | 12.0 | %
France |  |  | 364,348 |  |  |  | 9.7 | % |  |  | 356,444 |  |  |  | 9.4 | %
Sweden |  |  | 324,062 |  |  |  | 8.6 | % |  |  | 358,032 |  |  |  | 9.4 | %
Finland |  |  | 296,929 |  |  |  | 7.9 | % |  |  | 285,931 |  |  |  | 7.5 | %
Czech Republic |  |  | 263,712 |  |  |  | 7.0 | % |  |  | 270,422 |  |  |  | 7.1 | %
Thailand |  |  | 246,908 |  |  |  | 6.6 | % |  |  | 257,282 |  |  |  | 6.8 | %
United Kingdom |  |  | 215,123 |  |  |  | 5.7 | % |  |  | 206,925 |  |  |  | 5.5 | %
South Korea |  |  | 197,070 |  |  |  | 5.2 | % |  |  | 190,866 |  |  |  | 5.0 | %
Other |  |  | 242,540 |  |  |  | 6.4 | % |  |  | 198,552 |  |  |  | 5.2 | %
|  | $ | 3,764,514 |  |  |  | 100.0 | % |  | $ | 3,795,862 |  |  |  | 100.0 | %
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] |
|  | At May 31, 2024 |  |  | At August 31, 2023 |
China |  | $ | 5,575,097 |  |  | $ | 5,729,080 |
Other |  |  | 1,061,309 |  |  |  | 745,469 |
United States |  |  | 9,042,166 |  |  |  | 7,590,805 |
Total property and equipment, net |  | $ | 15,678,572 |  |  | $ | 14,065,354 |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | May 31, 2024 |  |  | May 31, 2023 |  |  | May 31, 2024 |  |  | May 31, 2023 |
China |  | $ | 3,540,570 |  |  | $ | 3,318,373 |  |  | $ | 10,674,939 |  |  | $ | 9,936,808 |
Brazil |  |  | 1,508,680 |  |  |  | 1,488,510 |  |  |  | 4,365,170 |  |  |  | 4,062,718 |
India |  |  | 5,814,829 |  |  |  | 5,145,423 |  |  |  | 16,401,624 |  |  |  | 14,356,708 |
Other |  |  | 2,735,259 |  |  |  | 3,287,600 |  |  |  | 9,108,583 |  |  |  | 8,878,105 |
United States |  |  | 7,086,859 |  |  |  | 7,729,820 |  |  |  | 21,160,095 |  |  |  | 21,958,978 |
Total net sales |  | $ | 20,686,197 |  |  | $ | 20,969,726 |  |  | $ | 61,710,410 |  |  | $ | 59,193,317 |

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