Note 12 - Segment and Geographic Information (Tables)
|
9 Months Ended |
May 31, 2026 |
|---|
| Notes Tables |
|
| Segment Reporting, Reconciliation of Revenue by Segment to Consolidated [Table Text Block] |
| |
|
Three Months Ended May 31,
|
|
|
Nine Months Ended May 31,
|
|
| |
|
2026
|
|
|
2025
|
|
|
2026
|
|
|
2025
|
|
|
ZERUST® net sales
|
|
$ |
18,145,611 |
|
|
$ |
15,728,637 |
|
|
$ |
52,095,200 |
|
|
$ |
45,316,457 |
|
|
Natur-Tec® net sales
|
|
|
6,070,051 |
|
|
|
5,779,926 |
|
|
|
17,426,065 |
|
|
|
16,602,565 |
|
|
Total net sales
|
|
$ |
24,215,662 |
|
|
$ |
21,508,563 |
|
|
$ |
69,521,265 |
|
|
$ |
61,919,022 |
|
|
| Reconciliation of Cost of Goods Sold from Segments to Consolidated [Table Text Block] |
| |
|
Three Months Ended May 31,
|
|
|
Nine Months Ended May 31,
|
|
| |
|
2026
|
|
|
% of Product Sales*
|
|
|
2025
|
|
|
% of Product Sales*
|
|
|
2026
|
|
|
% of Product Sales*
|
|
|
2025
|
|
|
% of Product Sales*
|
|
|
Direct cost of goods sold
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
|
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|
|
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|
|
|
|
|
ZERUST®
|
|
$ |
10,833,295 |
|
|
|
59.7 |
% |
|
$ |
9,119,330 |
|
|
|
58.0 |
% |
|
$ |
30,628,650 |
|
|
|
58.8 |
% |
|
$ |
25,894,213 |
|
|
|
57.1 |
% |
|
Natur-Tec®
|
|
|
4,184,642 |
|
|
|
68.9 |
% |
|
|
3,557,167 |
|
|
|
61.5 |
% |
|
|
11,926,040 |
|
|
|
68.4 |
% |
|
|
10,484,204 |
|
|
|
63.1 |
% |
|
Indirect cost of goods sold
|
|
|
1,054,561 |
|
|
|
— |
|
|
|
572,626 |
|
|
|
— |
|
|
|
2,581,899 |
|
|
|
— |
|
|
|
2,322,628 |
|
|
|
— |
|
|
Total net cost of goods sold
|
|
$ |
16,072,498 |
|
|
|
|
|
|
$ |
13,249,123 |
|
|
|
|
|
|
$ |
45,136,589 |
|
|
|
|
|
|
$ |
38,701,045 |
|
|
|
|
|
|
| Segment Reporting [Table Text Block] |
| |
|
Three Months Ended May 31,
|
|
|
Nine Months Ended May 31,
|
|
| |
|
2026
|
|
|
2025
|
|
|
2026
|
|
|
2025
|
|
|
ZERUST® gross profit
|
|
$ |
7,312,316 |
|
|
$ |
6,609,307 |
|
|
$ |
21,466,550 |
|
|
$ |
19,422,244 |
|
|
Natur-Tec® gross profit
|
|
|
1,885,409 |
|
|
|
2,222,759 |
|
|
|
5,500,025 |
|
|
|
6,118,361 |
|
|
Total segment gross profit
|
|
|
9,197,725 |
|
|
|
8,832,066 |
|
|
|
26,966,575 |
|
|
|
25,540,605 |
|
|
Indirect cost of goods sold
|
|
|
(1,054,561 |
) |
|
|
(572,626 |
) |
|
|
(2,581,899 |
) |
|
|
(2,322,628 |
) |
|
Total gross profit
|
|
$ |
8,143,164 |
|
|
$ |
8,259,440 |
|
|
$ |
24,384,676 |
|
|
$ |
23,217,977 |
|
|
Total joint venture operations
|
|
|
2,550,960 |
|
|
|
2,272,912 |
|
|
|
6,868,902 |
|
|
|
6,377,617 |
|
|
Selling expenses
|
|
|
(4,647,548 |
) |
|
|
(4,593,226 |
) |
|
|
(13,732,822 |
) |
|
|
(13,071,122 |
) |
|
General and administrative expenses
|
|
|
(4,324,275 |
) |
|
|
(3,933,696 |
) |
|
|
(12,085,935 |
) |
|
|
(11,113,008 |
) |
|
Research and development expenses
|
|
|
(1,206,971 |
) |
|
|
(1,138,243 |
) |
|
|
(3,603,085 |
) |
|
|
(3,770,539 |
) |
|
Interest income
|
|
|
64,089 |
|
|
|
37,821 |
|
|
|
166,899 |
|
|
|
273,544 |
|
|
Interest expense
|
|
|
(203,872 |
) |
|
|
(162,096 |
) |
|
|
(600,489 |
) |
|
|
(421,471 |
) |
|
Other income
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
1,139,756 |
|
|
Income before income tax expense
|
|
$ |
375,547 |
|
|
$ |
742,912 |
|
|
$ |
1,398,146 |
|
|
$ |
2,632,754 |
|
|
| Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table Text Block] |
| |
|
Three Months Ended May 31,
|
|
|
Nine Months Ended May 31,
|
|
| |
|
2026
|
|
|
2025
|
|
|
2026
|
|
|
2025
|
|
|
Inside the U.S. to unaffiliated customers
|
|
$ |
7,657,885 |
|
|
$ |
7,341,392 |
|
|
$ |
22,081,992 |
|
|
$ |
21,492,193 |
|
|
Outside the U.S. to:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Joint ventures in which the Company is a shareholder directly and indirectly
|
|
|
569,342 |
|
|
|
630,653 |
|
|
|
1,590,646 |
|
|
|
1,802,906 |
|
|
Unaffiliated customers
|
|
|
15,988,435 |
|
|
|
13,536,518 |
|
|
|
45,848,628 |
|
|
|
38,623,923 |
|
| |
|
$ |
24,215,662 |
|
|
$ |
21,508,563 |
|
|
$ |
69,521,265 |
|
|
$ |
61,919,022 |
|
| |
|
Three Months Ended May 31,
|
|
| |
|
2026
|
|
|
% of Total Fees for Services Provided to Joint Ventures
|
|
|
2025
|
|
|
% of Total Fees for Services Provided to Joint Ventures
|
|
|
Poland
|
|
$ |
228,036 |
|
|
|
22.1 |
% |
|
$ |
232,064 |
|
|
|
17.8 |
% |
|
Japan
|
|
|
158,629 |
|
|
|
15.3 |
% |
|
|
158,434 |
|
|
|
12.2 |
% |
|
Finland
|
|
|
124,349 |
|
|
|
12.0 |
% |
|
|
95,142 |
|
|
|
7.3 |
% |
|
Thailand
|
|
|
115,384 |
|
|
|
11.2 |
% |
|
|
87,957 |
|
|
|
6.8 |
% |
|
United Kingdom
|
|
|
92,325 |
|
|
|
8.9 |
% |
|
|
93,108 |
|
|
|
7.2 |
% |
|
Sweden
|
|
|
90,791 |
|
|
|
8.8 |
% |
|
|
111,138 |
|
|
|
8.5 |
% |
|
Czech Republic
|
|
|
89,434 |
|
|
|
8.6 |
% |
|
|
110,844 |
|
|
|
8.5 |
% |
|
South Korea
|
|
|
43,091 |
|
|
|
4.2 |
% |
|
|
83,697 |
|
|
|
6.4 |
% |
| Germany |
|
|
— |
|
|
|
— |
|
|
|
218,943 |
|
|
|
16.8 |
% |
|
Other
|
|
|
91,747 |
|
|
|
8.9 |
% |
|
|
111,271 |
|
|
|
8.5 |
% |
| |
|
$ |
1,033,786 |
|
|
|
100.0 |
% |
|
$ |
1,302,598 |
|
|
|
100.0 |
% |
| |
|
Nine Months Ended May 31,
|
|
| |
|
2026
|
|
|
% of Total Fees for Services Provided to Joint Ventures
|
|
|
2025
|
|
|
% of Total Fees for Services Provided to Joint Ventures
|
|
|
Poland
|
|
$ |
650,926 |
|
|
|
21.5 |
% |
|
$ |
637,574 |
|
|
|
17.4 |
% |
|
Japan
|
|
|
427,787 |
|
|
|
14.1 |
% |
|
|
429,520 |
|
|
|
11.7 |
% |
|
Finland
|
|
|
375,096 |
|
|
|
12.4 |
% |
|
|
276,028 |
|
|
|
7.6 |
% |
|
Thailand
|
|
|
344,965 |
|
|
|
11.4 |
% |
|
|
242,212 |
|
|
|
6.6 |
% |
|
United Kingdom
|
|
|
289,228 |
|
|
|
9.6 |
% |
|
|
237,734 |
|
|
|
6.5 |
% |
|
Sweden
|
|
|
271,539 |
|
|
|
9.0 |
% |
|
|
295,873 |
|
|
|
8.1 |
% |
|
Czech Republic
|
|
|
243,323 |
|
|
|
8.0 |
% |
|
|
251,018 |
|
|
|
6.9 |
% |
|
South Korea
|
|
|
114,630 |
|
|
|
3.8 |
% |
|
|
217,668 |
|
|
|
6.0 |
% |
| Germany |
|
|
74,081 |
|
|
|
2.4 |
% |
|
|
626,999 |
|
|
|
17.1 |
% |
|
Other
|
|
|
237,367 |
|
|
|
7.8 |
% |
|
|
442,354 |
|
|
|
12.1 |
% |
| |
|
$ |
3,028,942 |
|
|
|
100.0 |
% |
|
$ |
3,656,980 |
|
|
|
100.0 |
% |
|
| Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block] |
| |
|
At
May 31, 2026
|
|
|
At
August 31, 2025
|
|
|
China
|
|
$ |
5,462,047 |
|
|
$ |
5,355,918 |
|
|
Other
|
|
|
2,021,711 |
|
|
|
1,296,988 |
|
|
United States
|
|
|
7,380,178 |
|
|
|
8,531,012 |
|
|
Total property and equipment, net
|
|
$ |
14,863,936 |
|
|
$ |
15,183,918 |
|
| |
|
Three Months Ended May 31,
|
|
|
Nine Months Ended May 31,
|
|
| |
|
2026
|
|
|
2025
|
|
|
2026
|
|
|
2025
|
|
|
China
|
|
$ |
4,480,033 |
|
|
$ |
4,510,490 |
|
|
$ |
13,839,998 |
|
|
$ |
12,240,359 |
|
|
Brazil
|
|
|
2,058,788 |
|
|
|
1,517,904 |
|
|
|
5,955,542 |
|
|
|
4,418,778 |
|
|
India
|
|
|
6,570,057 |
|
|
|
5,684,908 |
|
|
|
17,428,202 |
|
|
|
16,600,711 |
|
|
Other
|
|
|
3,448,899 |
|
|
|
2,453,869 |
|
|
|
10,215,532 |
|
|
|
7,166,981 |
|
|
United States
|
|
|
7,657,885 |
|
|
|
7,341,392 |
|
|
|
22,081,992 |
|
|
|
21,492,193 |
|
|
Total net sales
|
|
$ |
24,215,662 |
|
|
$ |
21,508,563 |
|
|
$ |
69,521,265 |
|
|
$ |
61,919,022 |
|
|