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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

X

- 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

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_SegmentReportingRevenueReconcilingItemLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration