Note 12 - Segment and Geographic Information - Net Sales by Segment (Details) - USD ($)	3 Months Ended	9 Months Ended
May 31, 2025	May 31, 2024	May 31, 2025	May 31, 2024
Net sales	$ 21,508,563	$ 20,686,197	$ 61,919,022	$ 61,710,410
ZERUST [Member]
Net sales	15,728,637	14,837,235	45,316,457	45,461,075
NaturTec [Member]
Net sales	$ 5,779,926	$ 5,848,962	$ 16,602,565	$ 16,249,335

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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+ Details