Note 11 - 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, 2021	May 31, 2020	May 31, 2021	May 31, 2020
Fees	$ 1,589,621	$ 876,706	$ 4,388,866	$ 3,491,244
Percentage of Total Fees	100.00%	100.00%	100.00%	100.00%
GERMANY
Fees	$ 232,026	$ 199,877	$ 692,770	$ 620,106
Percentage of Total Fees	14.60%	22.80%	15.80%	17.80%
POLAND
Fees	$ 226,174	$ 75,118	$ 626,527	$ 441,011
Percentage of Total Fees	14.20%	8.60%	14.30%	12.60%
JAPAN
Fees	$ 200,270	$ 139,268	$ 561,725	$ 453,347
Percentage of Total Fees	12.60%	15.90%	12.80%	13.00%
SWEDEN
Fees	$ 127,710	$ 51,767	$ 365,095	$ 259,671
Percentage of Total Fees	8.00%	5.90%	8.30%	7.40%
FRANCE
Fees	$ 119,172	$ 61,716	$ 322,717	$ 241,056
Percentage of Total Fees	7.50%	7.00%	7.40%	6.90%
THAILAND
Fees	$ 108,842	$ 67,919	$ 306,151	$ 261,132
Percentage of Total Fees	6.90%	7.70%	7.00%	7.50%
INDIA
Fees	$ 107,021	$ 24,842	$ 290,713	$ 187,826
Percentage of Total Fees	6.70%	2.80%	6.60%	5.40%
CZECHIA
Fees	$ 109,680	$ 46,709	$ 268,571	$ 215,923
Percentage of Total Fees	6.90%	5.30%	6.10%	6.20%
UNITED KINGDOM
Fees	$ 113,886	$ 52,484	$ 247,560	$ 202,241
Percentage of Total Fees	7.20%	6.00%	5.60%	5.80%
KOREA, REPUBLIC OF
Fees	$ 78,507	$ 54,951	$ 241,805	$ 206,272
Percentage of Total Fees	4.90%	6.30%	5.50%	5.90%
FINLAND
Fees	$ 75,577	$ 52,870	$ 223,356	$ 194,813
Percentage of Total Fees	4.80%	6.00%	5.10%	5.60%
Other Countries [Member]
Fees	$ 90,756	$ 49,185	$ 241,876	$ 207,846
Percentage of Total Fees	5.70%	5.60%	5.50%	6.00%