Note 13 - Segment and Geographic Information - Net Sales by Segment (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
ZERUST [Member]
Net sales	14,446,832	12,378,215	41,988,394	32,882,882
NaturTec [Member]
Net sales	$ 4,518,089	$ 3,040,309	$ 11,918,579	$ 8,097,636