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Note 11 - Segment and Geographic Information - Net Sales by Geographic Location (Details) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2021	May 31, 2020
Net sales	$ 15,418,524	$ 9,744,823	$ 40,980,518	$ 37,610,006
Inside the USA to Unaffiliated Customers [Member]
Net sales	6,717,886	4,051,709	16,198,372	16,558,301
Joint Ventures in Which the Company is a Shareholder Directly and Indirectly Outside the USA [Member]
Net sales	1,253,919	673,751	2,361,165	1,504,997
Unaffiliated Customers Outside the USA [Member]
Net sales	$ 7,446,719	$ 5,019,363	$ 22,420,981	$ 19,546,708

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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