Note 13 - Segment and Geographic Information - Net Sales by Geographic Location (Details) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Net sales	$ 18,964,921	$ 15,418,524	$ 53,906,973	$ 40,980,518
Inside the USA to Unaffiliated Customers [Member]
Net sales	6,884,726	6,717,886	18,157,010	16,198,372
Joint Ventures in Which the Company is a Shareholder Directly and Indirectly Outside the USA [Member]
Net sales	528,665	1,253,919	2,252,618	2,361,165
Unaffiliated Customers Outside the USA [Member]
Net sales	$ 11,551,530	$ 7,446,719	$ 33,497,345	$ 22,420,981