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Note 14 - Income Taxes - Reconciliations of the Expected Federal Income Tax at the Statutory Rate with the Provisions for Income Taxes (Details) - USD ($)	12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020
Tax computed at statutory rates	$ 1,794,000	$ 365,000
State income tax, net of federal benefit	37,000	23,000
Tax effect on equity in income of international joint ventures	(1,560,000)	(888,000)
Tax effect of foreign operations	839,000	641,000
Deemed repatriation	0	108,000
Expired foreign tax credit	897,000	0
Research and development credit	(277,000)	(368,000)
Valuation allowance	(492,000)	2,797,000
Stock based compensation	75,000	189,000
Non-controlling interest	(83,000)	(55,000)
Other	231,905	(137.365)
Total income tax expense	$ 1,461,905	$ 2,674,635

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign tax credit expirations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.

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