Note 11 - Segment and Geographic Information - Net Sales by Geographic Location (Details) - USD ($)	3 Months Ended		6 Months Ended
	Feb. 29, 2024	Feb. 28, 2023	Feb. 29, 2024	Feb. 28, 2023
Net sales	$ 20,842,538	$ 18,270,825	$ 41,024,213	$ 38,223,591
Inside the USA to Unaffiliated Customers [Member]
Net sales	6,840,855	6,750,997	14,073,236	14,229,158
Joint Ventures in Which the Company is a Shareholder Directly and Indirectly Outside the USA [Member]
Net sales	611,926	1,529,763	1,463,377	2,163,228
Unaffiliated Customers Outside the USA [Member]
Net sales	$ 13,389,757	$ 9,990,065	$ 25,487,600	$ 21,831,205