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Note 1 - Nature of Business and Significant Accounting Policies (Detail) (USD $)	12 Months Ended
	Aug. 31, 2012	Aug. 31, 2011
Number of Countries in which Entity Operates	55
Deferred Revenue, Current (in Dollars)	$ 288,000	$ 288,000
Allowance for Doubtful Accounts Receivable (in Dollars)	20,000	20,000
Reimbursements Related to Certain Research and Development Contracts (in Dollars)	365,940	219,175
Other Accrued Liabilities, Current (in Dollars)	251,350	182,916
Zerust Brazil [Member]
Noncontrolling Interest, Ownership Percentage by Parent	15.00%
Equity Method Investment, Ownership Percentage	85.00%
Research and Development Contracts [Member]
Other Accrued Liabilities, Current (in Dollars)	96,861	0
Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	30 years
Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	5 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	10 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Joint Venture Fees [Member]
Deferred Revenue, Current (in Dollars)	$ 288,000	$ 288,000
Maximum [Member]
Noncontrolling Interest, Ownership Percentage by Parent	50.00%

X

- Definition

Reimbursements related to certain research and development contracts. These amounts are netted against product research and development expenses.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5074-111524



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-Section 02

-Paragraph 4

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 43

-Section A

-Paragraph 7, 8

-Chapter 3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 20

-Subparagraph a (1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Glossary Current Liabilities

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