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Note 16 - 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, 2022	Aug. 31, 2021
Tax computed at statutory rates	$ 1,780,000	$ 1,794,000
State income tax, net of federal benefit	34,000	37,000
Tax effect on equity in income of international joint ventures	(988,000)	(1,560,000)
Tax effect of foreign operations	1,004,000	839,000
Deemed repatriation	10,000	0
Expired foreign tax credit	0	897,000
Research and development credit	(244,000)	(277,000)
Valuation allowance	133,000	(492,000)
Stock based compensation	67,000	75,000
Non-controlling interest	(72,000)	(83,000)
Other	149,836	231,905
Total income tax expense	$ 1,873,836	$ 1,461,905

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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 equity in earnings (loss) of unconsolidated subsidiaries exempt from income taxes.

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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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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 state and local income tax expense (benefit).

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