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Note 1 - Nature of Business and Significant Accounting Policies (Details) (USD $) | 12 Months Ended
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Aug. 31, 2014 | Aug. 31, 2013
Note 1 - Nature of Business and Significant Accounting Policies (Details) [Line Items] |  |
Number of Countries in which Entity Operates | 60 |
Number of Joint Venture Arrangements | 20 |
Deferred Revenue, Current (in Dollars) | $ 288,000 | $ 288,000
Allowance for Doubtful Accounts Receivable (in Dollars) | 20,000 | 40,000
Reimbursements Related To Certain Research And Development Contracts (in Dollars) | 45,788 | 274,728
Building and Building Improvements [Member] | Maximum [Member] |  |
Note 1 - Nature of Business and Significant Accounting Policies (Details) [Line Items] |  |
Property, Plant and Equipment, Useful Life | 30 years |
Building and Building Improvements [Member] | Minimum [Member] |  |
Note 1 - Nature of Business and Significant Accounting Policies (Details) [Line Items] |  |
Property, Plant and Equipment, Useful Life | 5 years |
Machinery and Equipment [Member] | Maximum [Member] |  |
Note 1 - Nature of Business and Significant Accounting Policies (Details) [Line Items] |  |
Property, Plant and Equipment, Useful Life | 10 years |
Machinery and Equipment [Member] | Minimum [Member] |  |
Note 1 - Nature of Business and Significant Accounting Policies (Details) [Line Items] |  |
Property, Plant and Equipment, Useful Life | 3 years |
Joint Venture Fees [Member] |  |
Note 1 - Nature of Business and Significant Accounting Policies (Details) [Line Items] |  |
Deferred Revenue, Current (in Dollars) | $ 288,000 | $ 288,000
Zerust Brazil [Member] |  |
Note 1 - Nature of Business and Significant Accounting Policies (Details) [Line Items] |  |
Noncontrolling Interest, Ownership Percentage by Parent | 15.00% |
Equity Method Investment, Ownership Percentage | 85.00% |
NTI ASEAN [Member] |  |
Note 1 - Nature of Business and Significant Accounting Policies (Details) [Line Items] |  |
Noncontrolling Interest, Ownership Percentage by Parent | 40.00% |
Equity Method Investment, Ownership Percentage | 60.00% |
Natur-Tec [Member] |  |
Note 1 - Nature of Business and Significant Accounting Policies (Details) [Line Items] |  |
Noncontrolling Interest, Ownership Percentage by Parent | 10.00% |
Equity Method Investment, Ownership Percentage | 90.00% |
Maximum [Member] |  |
Note 1 - Nature of Business and Significant Accounting Policies (Details) [Line Items] |  |
Noncontrolling Interest, Ownership Percentage by Parent | 50.00% |

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- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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