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v3.25.2

Note 12 - Segment and Geographic Information (Tables) | 9 Months Ended
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May 31, 2025
Notes Tables |
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | May 31, 2025 |  |  | May 31, 2024 |  |  | May 31, 2025 |  |  | May 31, 2024 |
ZERUST® net sales |  | $ | 15,728,637 |  |  | $ | 14,837,235 |  |  | $ | 45,316,457 |  |  | $ | 45,461,075 |
Natur-Tec® net sales |  |  | 5,779,926 |  |  |  | 5,848,962 |  |  |  | 16,602,565 |  |  |  | 16,249,335 |
Total net sales |  | $ | 21,508,563 |  |  | $ | 20,686,197 |  |  | $ | 61,919,022 |  |  | $ | 61,710,410 |
Reconciliation of Cost of Goods Sold from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | May 31, 2025 |  |  | % of Product Sales* |  |  | May 31, 2024 |  |  | % of Product Sales* |  |  | May 31, 2025 |  |  | % of Product Sales* |  |  | May 31, 2024 |  |  | % of Product Sales* |
Direct cost of goods sold |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ZERUST® |  | $ | 9,119,330 |  |  |  | 58.0 | % |  | $ | 8,168,215 |  |  |  | 55.1 | % |  | $ | 25,894,213 |  |  |  | 57.1 | % |  | $ | 24,994,401 |  |  |  | 55.0 | %
Natur-Tec® |  |  | 3,557,167 |  |  |  | 61.5 | % |  |  | 3,768,921 |  |  |  | 64.4 | % |  |  | 10,484,204 |  |  |  | 63.1 | % |  |  | 10,566,223 |  |  |  | 65.0 | %
Indirect cost of goods sold |  |  | 572,626 |  |  |  | — |  |  |  | 855,967 |  |  |  | — |  |  |  | 2,322,628 |  |  |  | — |  |  |  | 2,583,254 |  |  |  | — |
Total net cost of goods sold |  | $ | 13,249,123 |  |  |  |  |  |  | $ | 12,793,103 |  |  |  |  |  |  | $ | 38,701,045 |  |  |  |  |  |  | $ | 38,143,878 |  |  |  |  |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | May 31, 2025 |  |  | May 31, 2024 |  |  | May 31, 2025 |  |  | May 31, 2024 |
ZERUST® gross profit |  | $ | 6,609,307 |  |  | $ | 6,669,020 |  |  | $ | 19,422,244 |  |  | $ | 20,466,674 |
Natur-Tec® gross profit |  |  | 2,222,759 |  |  |  | 2,080,041 |  |  |  | 6,118,361 |  |  |  | 5,683,112 |
Total segment gross profit |  |  | 8,832,066 |  |  |  | 8,749,061 |  |  |  | 25,540,605 |  |  |  | 26,149,786 |
Indirect cost of goods sold |  |  | (572,626 | ) |  |  | (855,967 | ) |  |  | (2,322,628 | ) |  |  | (2,583,254 | )
Total gross profit |  | $ | 8,259,440 |  |  | $ | 7,893,094 |  |  | $ | 23,217,977 |  |  | $ | 23,566,532 |
Total joint venture operations |  |  | 2,272,912 |  |  |  | 2,609,228 |  |  |  | 6,377,617 |  |  |  | 7,441,476 |
Selling expenses |  |  | (4,375,956 | ) |  |  | (4,232,887 | ) |  |  | (12,515,638 | ) |  |  | (12,053,839 | )
General and administrative expenses |  |  | (4,150,966 | ) |  |  | (3,500,113 | ) |  |  | (11,668,492 | ) |  |  | (10,253,966 | )
Research and development expenses |  |  | (1,138,243 | ) |  |  | (1,245,405 | ) |  |  | (3,770,539 | ) |  |  | (3,593,582 | )
Interest income |  |  | 37,821 |  |  |  | 23,744 |  |  |  | 273,544 |  |  |  | 99,396 |
Interest expense |  |  | (162,096 | ) |  |  | (59,939 | ) |  |  | (421,471 | ) |  |  | (248,835 | )
Other income |  |  | — |  |  |  | — |  |  |  | 1,139,756 |  |  |  | — |
Income before income tax expense |  | $ | 742,912 |  |  | $ | 1,487,722 |  |  | $ | 2,632,754 |  |  | $ | 4,957,182 |
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, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Inside the U.S. to unaffiliated customers |  | $ | 7,341,392 |  |  | $ | 7,086,859 |  |  | $ | 21,492,193 |  |  | $ | 21,160,095 |
Outside the U.S. to: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Joint ventures in which the Company is a shareholder directly and indirectly |  |  | 630,653 |  |  |  | 441,067 |  |  |  | 1,802,906 |  |  |  | 1,904,444 |
Unaffiliated customers |  |  | 13,536,518 |  |  |  | 13,158,271 |  |  |  | 38,623,923 |  |  |  | 38,645,871 |
|  | $ | 21,508,563 |  |  | $ | 20,686,197 |  |  | $ | 61,919,022 |  |  | $ | 61,710,410 |
|  | Three Months Ended |
|  | May 31, 2025 |  |  | % of Total Fees for Services Provided to Joint Ventures |  |  | May 31, 2024 |  |  | % of Total Fees for Services Provided to Joint Ventures |
Poland |  | $ | 232,064 |  |  |  | 17.8 | % |  | $ | 213,102 |  |  |  | 17.6 | %
Germany |  |  | 218,943 |  |  |  | 16.8 | % |  |  | 205,853 |  |  |  | 17.0 | %
Japan |  |  | 158,434 |  |  |  | 12.2 | % |  |  | 118,606 |  |  |  | 9.8 | %
Sweden |  |  | 111,138 |  |  |  | 8.5 | % |  |  | 110,542 |  |  |  | 9.1 | %
Czech Republic |  |  | 110,844 |  |  |  | 8.5 | % |  |  | 101,111 |  |  |  | 8.3 | %
Finland |  |  | 95,142 |  |  |  | 7.3 | % |  |  | 97,437 |  |  |  | 8.0 | %
United Kingdom |  |  | 93,108 |  |  |  | 7.1 | % |  |  | 96,872 |  |  |  | 8.0 | %
Thailand |  |  | 87,957 |  |  |  | 6.8 | % |  |  | 77,206 |  |  |  | 6.4 | %
South Korea |  |  | 83,697 |  |  |  | 6.4 | % |  |  | 58,732 |  |  |  | 4.8 | %
France |  |  | 76,459 |  |  |  | 5.9 | % |  |  | 47,206 |  |  |  | 3.9 | %
Other |  |  | 34,812 |  |  |  | 2.7 | % |  |  | 85,830 |  |  |  | 7.1 | %
|  | $ | 1,302,598 |  |  |  | 100.0 | % |  | $ | 1,212,497 |  |  |  | 100.0 | %
|  | Nine Months Ended |
|  | May 31, 2025 |  |  | % of Total Fees for Services Provided to Joint Ventures |  |  | May 31, 2024 |  |  | % of Total Fees for Services Provided to Joint Ventures |
Poland |  | $ | 637,574 |  |  |  | 17.4 | % |  | $ | 628,905 |  |  |  | 16.7 | %
Germany |  |  | 626,999 |  |  |  | 17.1 | % |  |  | 618,236 |  |  |  | 16.4 | %
Japan |  |  | 429,520 |  |  |  | 11.7 | % |  |  | 366,682 |  |  |  | 9.7 | %
France |  |  | 312,520 |  |  |  | 8.5 | % |  |  | 364,348 |  |  |  | 9.7 | %
Sweden |  |  | 295,873 |  |  |  | 8.1 | % |  |  | 324,062 |  |  |  | 8.6 | %
Finland |  |  | 276,028 |  |  |  | 7.5 | % |  |  | 296,929 |  |  |  | 7.9 | %
Czech Republic |  |  | 251,018 |  |  |  | 6.9 | % |  |  | 263,712 |  |  |  | 7.0 | %
Thailand |  |  | 242,212 |  |  |  | 6.6 | % |  |  | 246,908 |  |  |  | 6.6 | %
United Kingdom |  |  | 237,734 |  |  |  | 6.5 | % |  |  | 215,123 |  |  |  | 5.7 | %
South Korea |  |  | 217,668 |  |  |  | 6.0 | % |  |  | 197,070 |  |  |  | 5.2 | %
Other |  |  | 129,834 |  |  |  | 3.7 | % |  |  | 242,539 |  |  |  | 6.5 | %
|  | $ | 3,656,980 |  |  |  | 100.0 | % |  | $ | 3,764,514 |  |  |  | 100.0 | %
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] |
|  | At May 31, 2025 |  |  | At August 31, 2024 |
China |  | $ | 5,367,112 |  |  | $ | 5,627,202 |
Other |  |  | 1,238,453 |  |  |  | 1,217,400 |
United States |  |  | 8,853,664 |  |  |  | 9,421,051 |
Total property and equipment, net |  | $ | 15,459,229 |  |  | $ | 16,265,653 |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | May 31, 2025 |  |  | May 31, 2024 |  |  | May 31, 2025 |  |  | May 31, 2024 |
China |  | $ | 4,510,490 |  |  | $ | 3,540,570 |  |  | $ | 12,240,359 |  |  | $ | 10,674,939 |
Brazil |  |  | 1,517,904 |  |  |  | 1,508,680 |  |  |  | 4,418,778 |  |  |  | 4,365,170 |
India |  |  | 5,684,908 |  |  |  | 5,814,829 |  |  |  | 16,600,711 |  |  |  | 16,401,624 |
Other |  |  | 2,453,869 |  |  |  | 2,735,259 |  |  |  | 7,166,981 |  |  |  | 9,108,582 |
United States |  |  | 7,341,392 |  |  |  | 7,086,859 |  |  |  | 21,492,193 |  |  |  | 21,160,095 |
Total net sales |  | $ | 21,508,563 |  |  | $ | 20,686,197 |  |  | $ | 61,919,022 |  |  | $ | 61,710,410 |

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