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Note 11 - Segment and Geographic Information - Cost of Goods Sold by Segment (Details) - USD ($)		3 Months Ended		6 Months Ended
		Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2023	Feb. 28, 2022
ZERUST®		$ 11,967,757	$ 11,764,304	$ 25,567,399	$ 24,254,787
Indirect Cost of Goods Sold [Member]
ZERUST®		921,270	837,594	1,770,985	1,699,313
ZERUST [Member] | Direct Cost of Goods Sold [Member]
ZERUST®		$ 8,115,451	$ 8,151,274	$ 17,294,705	$ 16,857,941
ZERUST®	[1]	56.10%	62.10%	58.00%	61.20%
NaturTec [Member] | Direct Cost of Goods Sold [Member]
ZERUST®		$ 2,931,036	$ 2,775,436	$ 6,501,709	$ 5,697,533
ZERUST®	[1]	76.90%	76.40%	77.40%	77.00%
[1] The percent of segment sales is calculated by dividing the direct cost of goods sold for each individual segment category by the net sales for each segment category.

X

- Definition

Represents cost of goods sold as percentage of product sales.

+ References

No definition available.

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- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479941/924-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

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