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Note 11 - Segment and Geographical Information - Total Net Sales by Geographic Distribution (Details) - USD ($)	3 Months Ended
	Nov. 30, 2017	Nov. 30, 2016
Net sales by segment	$ 11,543,038	$ 9,702,023
CHINA
Net sales by segment	2,911,643	1,546,810
BRAZIL
Net sales by segment	639,841	601,524
INDIA
Net sales by segment	495,539	331,610
GERMANY
Net sales by segment	48,771	118,259
Other Countries [Member]
Net sales by segment	683,407	1,133,022
UNITED STATES
Net sales by segment	$ 6,763,837	$ 5,970,798

X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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