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Note 7 - Investments in Joint Ventures (Details Textual) - USD ($)		3 Months Ended		12 Months Ended
	May. 31, 2014	Aug. 31, 2014	Nov. 30, 2013	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Scenario, Forecast [Member] | Maximum [Member] | Tianjin Zerust [Member]
Other than Temporary Impairment Losses, Investments				$ 1,100,000
Equity Method Investments				$ 1,130,200
Tianjin Zerust [Member]
Other than Temporary Impairment Losses, Investments					$ 0
Other than Temporary Impairment Losses, Percentage of Investment					60.00%
Equity Method Investments		$ 2,243,524			$ 1,883,668	$ 2,243,524
Mutec [Member]
Due from Joint Ventures		156,854			125,891	156,854
SINGAPORE | NTI Asean LLC [Member]
Payments to Acquire Interest in Joint Venture	$ 110,988
Payments to Acquire Interest in Joint Venture	$ 110,988
Equity Method Investment Ownership Acquired	50.00%
Mutec [Member]
Financing Receivable, Net			$ 168,000
Notes Receivable Term			4 years
Payments to Acquire Interest in Joint Venture		0			0	110,988
Payments to Acquire Interest in Joint Venture		$ 0			$ 0	$ 110,988

X

- Definition

Percentage of ownership acquired during the period.

+ References

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+ References

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For an unclassified balance sheet, amounts due from an entity in which the reporting entity shares joint control with another party or group.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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