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Note 10 - Geographic And Segment Information (Details) - Net Sales by Segment (USD $) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Feb. 28, 2014 | Feb. 28, 2013 | Feb. 28, 2014 | Feb. 28, 2013
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Net Sales | $ 6,219,008 | $ 5,246,350 | $ 12,528,108 | $ 10,538,097
ZERUST [Member] |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Net Sales | 5,555,051 | 4,710,412 | 11,304,064 | 9,505,695
Natur-Tec [Member] |  |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |  |
Net Sales | $ 663,957 | $ 535,938 | $ 1,224,044 | $ 1,032,402

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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