Note 11 - Segment and Geographic Information - Total Net Sales by Geographic Distribution (Details) - USD ($)	3 Months Ended
	Nov. 30, 2023	Nov. 30, 2022
Net sales	$ 20,181,675	$ 19,952,766
CHINA
Net sales	3,678,523	3,746,640
BRAZIL
Net sales	1,529,623	1,367,418
INDIA
Net sales	5,180,391	4,846,927
Other Countries [Member]
Net sales	2,560,757	2,513,620
UNITED STATES
Net sales	$ 7,232,381	$ 7,478,161