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Note 10 - Geographic And Segment Information (Tables) | 6 Months Ended
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Feb. 28, 2014
Note 10 - Geographic And Segment Information (Tables) [Line Items] |
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | February 28, 2014 |  |  | February 28, 2013 |  |  | February 28, 2014 |  |  | February 28, 2013 |
Inside the U.S.A. to unaffiliated customers |  |  | 62.1 | % |  |  | 65.6 | % |  |  | 66.6 | % |  |  | 68.4 | %
Outside the U.S.A to: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Joint ventures in which the Company is a shareholder directly and indirectly |  |  | 12.9 | % |  |  | 18.2 | % |  |  | 11.7 | % |  |  | 16.8 | %
Unaffiliated customers |  |  | 25.0 | % |  |  | 16.2 | % |  |  | 21.7 | % |  |  | 14.8 | %
|  |  | 100.0 | % |  |  | 100.0 | % |  |  | 100.0 | % |  |  | 100.0 | %
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | February 28, 2014 |  |  | February 28, 2013 |  |  | February 28, 2014 |  |  | February 28, 2013 |
ZERUST® sales |  | $ | 5,555,051 |  |  | $ | 4,710,412 |  |  | $ | 11,304,064 |  |  | $ | 9,505,695 |
Natur-Tec™ sales |  |  | 663,957 |  |  |  | 535,938 |  |  |  | 1,224,044 |  |  |  | 1,032,402 |
Total net sales |  | $ | 6,219,008 |  |  | $ | 5,246,350 |  |  | $ | 12,528,108 |  |  | $ | 10,538,097 |
Reconciliation of Cost of Good Sold from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | February 28, 2014 |  |  | % of Product Sales* |  |  | February 28, 2013 |  |  | % of Product Sales* |  |  | February 28, 2014 |  |  | % of Product Sales* |  |  | February 28, 2013 |  |  | % of Product Sales* |
Direct cost of goods sold |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ZERUST® |  | $ | 2,965,790 |  |  |  | 53.4 | % |  | $ | 2,623,070 |  |  |  | 55.7 | % |  | $ | 6,047,554 |  |  |  | 53.5 | % |  | $ | 5,267,365 |  |  |  | 55.4 | %
Natur-Tec® |  |  | 490,573 |  |  |  | 73.9 | % |  |  | 453,147 |  |  |  | 84.6 | % |  |  | 940,037 |  |  |  | 76.8 | % |  |  | 892,820 |  |  |  | 86.5 | %
Indirect cost of goods sold |  |  | 595,470 |  |  |  | — |  |  |  | 557,696 |  |  |  | — |  |  |  | 1,222,273 |  |  |  | — |  |  |  | 1,164,700 |  |  |  | — |
Total net cost of goods sold |  | $ | 4,051,833 |  |  |  |  |  |  | $ | 3,633,913 |  |  |  |  |  |  | $ | 8,209,864 |  |  |  |  |  |  | $ | 7,324,885 |  |  |  |  |
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] |
|  | As of February 28, 2014 |  |  | As of August 31, 2013 |
Brazil |  | $ | 934,780 |  |  | $ | 1,193,373 |
India |  |  | 332,217 |  |  |  | — |
North America |  |  | 49,554,310 |  |  |  | 47,860,576 |
Total assets |  | $ | 50,821,307 |  |  | $ | 49,053,949 |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Six Months Ended |
|  | February 28, 2014 |  |  | February 28, 2013 |
Brazil |  | $ | 1,153,012 |  |  | $ | 1,131,469 |
India |  |  | 168,779 |  |  |  | — |
North America |  |  | 11,206,317 |  |  |  | 9,406,628 |
Total net sales |  | $ | 12,528,108 |  |  | $ | 10,538,097 |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
|  | Six Months Ended |
|  | February 28, 2014 |  |  | February 28, 2013 |
Brazil |  | $ | (145,955 | ) |  | $ | (106,759 | )
India |  |  | 5,800 |  |  |  | — |
North America |  |  | 3,307,688 |  |  |  | 1,950,278 |
Total operating income |  | $ | 3,167,533 |  |  | $ | 1,843,519 |
Fees For Services Provided to Joint Ventures [Member] |
Note 10 - Geographic And Segment Information (Tables) [Line Items] |
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended |
|  | February 28, 2014 |  |  | % of Total Fees for Services Provided to Joint Ventures |  |  | February 28, 2013 |  |  | % of Total Fees for Services Provided to Joint Ventures |
China |  | $ | 523,451 |  |  |  | 25.4 | % |  | $ | 450,586 |  |  |  | 25.4 | %
Germany |  |  | 263,556 |  |  |  | 12.8 | % |  |  | 249,513 |  |  |  | 14.1 | %
Japan |  |  | 167,410 |  |  |  | 8.2 | % |  |  | 169,205 |  |  |  | 9.6 | %
India |  |  | 166,858 |  |  |  | 8.1 | % |  |  | — |  |  |  | 0.0 | %
Poland |  |  | 152,518 |  |  |  | 7.4 | % |  |  | 154,839 |  |  |  | 8.7 | %
Thailand |  |  | 130,441 |  |  |  | 6.3 | % |  |  | 148,303 |  |  |  | 8.4 | %
France |  |  | 122,972 |  |  |  | 6.0 | % |  |  | 147,896 |  |  |  | 8.3 | %
Korea |  |  | 108,797 |  |  |  | 5.3 | % |  |  | 123,388 |  |  |  | 7.0 | %
Sweden |  |  | 92,223 |  |  |  | 4.5 | % |  |  | 77,627 |  |  |  | 4.4 | %
United Kingdom |  |  | 79,935 |  |  |  | 3.9 | % |  |  | 35,754 |  |  |  | 2.0 | %
Finland |  |  | 76,537 |  |  |  | 3.7 | % |  |  | 72,329 |  |  |  | 4.1 | %
Other |  |  | 172,973 |  |  |  | 8.4 | % |  |  | 141,441 |  |  |  | 8.0 | %
|  | $ | 2,057,671 |  |  |  | 100.0 | % |  | $ | 1,770,881 |  |  |  | 100.0 | %
|  | Six Months Ended |
|  | February 28, 2014 |  |  | % of Total Fees for Services Provided to Joint Ventures |  |  | February 28, 2013 |  |  | % of Total Fees for Services Provided to Joint Ventures |
China |  | $ | 1,111,633 |  |  |  | 26.7 | % |  | $ | 943,897 |  |  |  | 26.1 | %
Germany |  |  | 527,111 |  |  |  | 12.6 | % |  |  | 492,213 |  |  |  | 13.6 | %
Japan |  |  | 340,691 |  |  |  | 8.2 | % |  |  | 371,186 |  |  |  | 10.3 | %
Poland |  |  | 317,085 |  |  |  | 7.6 | % |  |  | 266,311 |  |  |  | 7.4 | %
Thailand |  |  | 282,999 |  |  |  | 6.8 | % |  |  | 301,989 |  |  |  | 8.4 | %
Korea |  |  | 270,221 |  |  |  | 6.5 | % |  |  | 262,131 |  |  |  | 7.2 | %
France |  |  | 251,075 |  |  |  | 6.0 | % |  |  | 276,398 |  |  |  | 7.6 | %
Sweden |  |  | 202,193 |  |  |  | 4.8 | % |  |  | 164,619 |  |  |  | 4.6 | %
Finland |  |  | 181,740 |  |  |  | 4.4 | % |  |  | 160,180 |  |  |  | 4.4 | %
India |  |  | 166,858 |  |  |  | 4.0 | % |  |  | — |  |  |  | 0.0 | %
United Kingdom |  |  | 154,632 |  |  |  | 3.7 | % |  |  | 102,812 |  |  |  | 2.8 | %
Other |  |  | 361,081 |  |  |  | 8.7 | % |  |  | 275,422 |  |  |  | 7.6 | %
|  | $ | 4,167,319 |  |  |  | 100.0 | % |  | $ | 3,617,158 |  |  |  | 100.0 | %

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