Note 13 - Segment and Geographic Information - Fees for Services Provided to Joint Ventures by Geographic Location as a Percentage of Total Fees (Details) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Fees	$ 1,329,988	$ 1,589,621	$ 3,835,755	$ 4,388,866
Percentage of Total Fees	100.00%	100.00%	100.00%	100.00%
GERMANY
Fees	$ 204,316	$ 232,026	$ 639,738	$ 692,770
Percentage of Total Fees	15.40%	14.60%	16.70%	15.80%
POLAND
Fees	$ 171,181	$ 226,174	$ 520,807	$ 626,527
Percentage of Total Fees	12.90%	14.20%	13.60%	14.30%
JAPAN
Fees	$ 168,075	$ 200,270	$ 486,815	$ 561,725
Percentage of Total Fees	12.60%	12.60%	12.70%	12.80%
FRANCE
Fees	$ 123,869	$ 119,172	$ 355,827	$ 322,717
Percentage of Total Fees	9.30%	7.50%	9.30%	7.40%
SWEDEN
Fees	$ 130,681	$ 127,710	$ 337,929	$ 365,095
Percentage of Total Fees	9.80%	8.00%	8.80%	8.30%
UNITED KINGDOM
Fees	$ 89,363	$ 113,886	$ 271,027	$ 247,560
Percentage of Total Fees	6.70%	7.20%	7.10%	5.60%
THAILAND
Fees	$ 95,574	$ 108,842	$ 271,046	$ 306,151
Percentage of Total Fees	7.20%	6.80%	7.10%	7.00%
FINLAND
Fees	$ 92,036	$ 75,577	$ 257,635	$ 223,356
Percentage of Total Fees	6.90%	4.80%	6.70%	5.10%
CZECHIA
Fees	$ 84,797	$ 109,680	$ 224,280	$ 268,571
Percentage of Total Fees	6.40%	6.90%	5.80%	6.10%
KOREA, REPUBLIC OF
Fees	$ 78,542	$ 78,507	$ 205,342	$ 241,805
Percentage of Total Fees	5.90%	4.90%	5.40%	5.50%
Other Countries [Member]
Fees	$ 91,554	$ 197,777	$ 265,309	$ 532,589
Percentage of Total Fees	6.90%	12.40%	6.90%	12.10%