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Note 11 - Segment and Geographic Information - Total Net Sales by Geographic Distribution (Details) - USD ($)	3 Months Ended		12 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Aug. 31, 2019	Aug. 31, 2018
Net sales by segment	$ 14,631,400	$ 14,094,052	$ 14,631,400	$ 14,094,052
CHINA
Net sales by segment	3,861,572	3,168,060
BRAZIL
Net sales by segment	891,978	824,796
INDIA
Net sales by segment	2,036,210	1,651,641
GERMANY
Net sales by segment		6,472
Other Countries [Member]
Net sales by segment	1,694,554	1,519,149
UNITED STATES
Net sales by segment	$ 6,147,086	$ 6,923,934

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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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-Section S99
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-Subparagraph (SX 210.5-03(1))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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