Note 11 - Segment and Geographic Information - Cost of Goods Sold by Segment (Details) - USD ($)	3 Months Ended
Nov. 30, 2022	Nov. 30, 2021
ZERUST®	$ 13,599,642	$ 12,490,483
Indirect Cost of Goods Sold [Member]
ZERUST®	849,715	861,718
ZERUST [Member] \| Direct Cost of Goods Sold [Member]
ZERUST®	$ 9,179,254	$ 8,706,667
ZERUST®	59.70%	60.40%
NaturTec [Member] \| Direct Cost of Goods Sold [Member]
ZERUST®	$ 3,570,673	$ 2,922,098
ZERUST®	77.90%	77.50%

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

Name:	us-gaap_CostOfGoodsAndServicesSold
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration