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v3.25.1

Note 12 - Segment and Geographic Information (Tables) | 6 Months Ended
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Feb. 28, 2025
Notes Tables |
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | February 28, 2025 |  |  | February 29, 2024 |  |  | February 28, 2025 |  |  | February 29, 2024 |
ZERUST® net sales |  | $ | 14,112,017 |  |  | $ | 15,218,095 |  |  | $ | 29,587,820 |  |  | $ | 30,623,840 |
Natur-Tec® net sales |  |  | 4,960,049 |  |  |  | 5,624,443 |  |  |  | 10,822,639 |  |  |  | 10,400,373 |
Total net sales |  | $ | 19,072,066 |  |  | $ | 20,842,538 |  |  | $ | 40,410,459 |  |  | $ | 41,024,213 |
Reconciliation of Cost of Goods Sold from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | February 28, 2025 |  |  | % of Product Sales* |  |  | February 29, 2024 |  |  | % of Product Sales* |  |  | February 28, 2025 |  |  | % of Product Sales* |  |  | February 29, 2024 |  |  | % of Product Sales* |
Direct cost of goods sold |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ZERUST® |  | $ | 8,096,177 |  |  |  | 57.4 | % |  | $ | 8,082,163 |  |  |  | 53.1 | % |  | $ | 16,774,883 |  |  |  | 56.7 | % |  | $ | 16,826,187 |  |  |  | 54.9 | %
Natur-Tec® |  |  | 3,237,854 |  |  |  | 65.3 | % |  |  | 3,568,719 |  |  |  | 63.5 | % |  |  | 6,927,037 |  |  |  | 64.0 | % |  |  | 6,797,302 |  |  |  | 65.4 | %
Indirect cost of goods sold |  |  | 942,451 |  |  |  | — |  |  |  | 852,492 |  |  |  | — |  |  |  | 1,750,002 |  |  |  | — |  |  |  | 1,727,286 |  |  |  | — |
Total net cost of goods sold |  | $ | 12,276,482 |  |  |  |  |  |  | $ | 12,503,374 |  |  |  |  |  |  | $ | 25,451,922 |  |  |  |  |  |  | $ | 25,350,775 |  |  |  |  |
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | February 28, 2025 |  |  | February 29, 2024 |  |  | February 28, 2025 |  |  | February 29, 2024 |
Inside the U.S. to unaffiliated customers |  | $ | 6,668,183 |  |  | $ | 6,840,855 |  |  | $ | 14,150,801 |  |  | $ | 14,073,236 |
Outside the U.S. to: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Joint ventures in which the Company is a shareholder directly and indirectly |  |  | 545,484 |  |  |  | 611,926 |  |  |  | 1,172,245 |  |  |  | 1,463,377 |
Unaffiliated customers |  |  | 11,858,399 |  |  |  | 13,389,757 |  |  |  | 25,087,413 |  |  |  | 25,487,600 |
|  | $ | 19,072,066 |  |  | $ | 20,842,538 |  |  | $ | 40,410,459 |  |  | $ | 41,024,213 |
|  | Three Months Ended |
|  | February 28, 2025 |  |  | % of Total Fees for Services Provided to Joint Ventures |  |  | February 29, 2024 |  |  | % of Total Fees for Services Provided to Joint Ventures |
Germany |  | $ | 201,728 |  |  |  | 18.8 | % |  | $ | 206,740 |  |  |  | 15.9 | %
Poland |  |  | 185,499 |  |  |  | 17.3 | % |  |  | 217,786 |  |  |  | 16.7 | %
Japan |  |  | 122,548 |  |  |  | 11.5 | % |  |  | 111,995 |  |  |  | 8.6 | %
Sweden |  |  | 96,133 |  |  |  | 9.0 | % |  |  | 102,984 |  |  |  | 7.9 | %
Thailand |  |  | 86,721 |  |  |  | 8.1 | % |  |  | 90,264 |  |  |  | 6.9 | %
France |  |  | 70,040 |  |  |  | 6.5 | % |  |  | 195,176 |  |  |  | 15.0 | %
Finland |  |  | 69,923 |  |  |  | 6.5 | % |  |  | 95,748 |  |  |  | 7.3 | %
United Kingdom |  |  | 68,804 |  |  |  | 6.4 | % |  |  | 55,101 |  |  |  | 4.2 | %
Czech Republic |  |  | 61,340 |  |  |  | 5.7 | % |  |  | 84,789 |  |  |  | 6.5 | %
South Korea |  |  | 27,320 |  |  |  | 2.6 | % |  |  | 63,381 |  |  |  | 4.9 | %
Other |  |  | 80,207 |  |  |  | 7.6 | % |  |  | 79,095 |  |  |  | 6.1 | %
|  | $ | 1,070,263 |  |  |  | 100.0 | % |  | $ | 1,303,059 |  |  |  | 100.0 | %
|  | Six Months Ended |
|  | February 28, 2025 |  |  | % of Total Fees for Services Provided to Joint Ventures |  |  | February 29, 2024 |  |  | % of Total Fees for Services Provided to Joint Ventures |
Germany |  | $ | 408,056 |  |  |  | 17.3 | % |  | $ | 412,383 |  |  |  | 16.2 | %
Poland |  |  | 405,510 |  |  |  | 17.2 | % |  |  | 415,803 |  |  |  | 16.3 | %
Japan |  |  | 271,086 |  |  |  | 11.5 | % |  |  | 248,076 |  |  |  | 9.7 | %
Finland |  |  | 201,382 |  |  |  | 8.6 | % |  |  | 199,492 |  |  |  | 7.8 | %
United Kingdom |  |  | 185,029 |  |  |  | 7.9 | % |  |  | 118,251 |  |  |  | 4.6 | %
Thailand |  |  | 180,886 |  |  |  | 7.7 | % |  |  | 169,702 |  |  |  | 6.6 | %
Sweden |  |  | 163,061 |  |  |  | 6.9 | % |  |  | 213,520 |  |  |  | 8.4 | %
France |  |  | 149,104 |  |  |  | 6.3 | % |  |  | 317,142 |  |  |  | 12.4 | %
Czech Republic |  |  | 133,972 |  |  |  | 5.7 | % |  |  | 162,601 |  |  |  | 6.4 | %
South Korea |  |  | 95,021 |  |  |  | 4.0 | % |  |  | 138,338 |  |  |  | 5.4 | %
Other |  |  | 161,275 |  |  |  | 6.9 | % |  |  | 156,710 |  |  |  | 6.1 | %
|  | $ | 2,354,382 |  |  |  | 100.0 | % |  | $ | 2,552,018 |  |  |  | 100.0 | %
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] |
|  | At February 28, 2025 |  |  | At August 31, 2024 |
China |  | $ | 5,359,435 |  |  | $ | 5,627,202 |
Other |  |  | 1,179,459 |  |  |  | 1,217,400 |
United States |  |  | 8,275,495 |  |  |  | 9,421,051 |
Total property and equipment, net |  | $ | 14,814,389 |  |  | $ | 16,265,653 |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Three Months Ended |
|  | February 28, 2025 |  |  | February 29, 2024 |
China |  | $ | 3,735,100 |  |  | $ | 3,455,846 |
Brazil |  |  | 1,515,680 |  |  |  | 1,326,867 |
India |  |  | 4,870,068 |  |  |  | 5,406,404 |
Other |  |  | 2,283,035 |  |  |  | 3,812,566 |
United States |  |  | 6,668,183 |  |  |  | 6,840,855 |
Total net sales |  | $ | 19,072,066 |  |  | $ | 20,842,538 |
|  | Six Months Ended |
|  | February 28, 2025 |  |  | February 29, 2024 |
China |  | $ | 7,729,869 |  |  | $ | 7,134,369 |
Brazil |  |  | 2,900,874 |  |  |  | 2,856,490 |
India |  |  | 10,915,803 |  |  |  | 10,586,795 |
Other |  |  | 4,713,112 |  |  |  | 6,373,323 |
United States |  |  | 14,150,801 |  |  |  | 14,073,236 |
Total net sales |  | $ | 40,410,459 |  |  | $ | 41,024,213 |

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