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, 2020	May 31, 2019	May 31, 2020	May 31, 2019
Fees	$ 876,706	$ 1,433,823	$ 3,491,244	$ 4,299,032
Percentage of Total Fees	100.00%	100.00%	100.00%	100.00%
GERMANY
Fees	$ 199,877	$ 212,825	$ 620,106	$ 643,154
Percentage of Total Fees	22.80%	14.80%	17.80%	15.00%
POLAND
Fees	$ 75,118	$ 181,057	$ 441,011	$ 551,430
Percentage of Total Fees	8.60%	12.60%	12.60%	12.80%
JAPAN
Fees	$ 139,268	$ 164,136	$ 453,347	$ 501,432
Percentage of Total Fees	15.90%	11.50%	13.00%	11.60%
SWEDEN
Fees	$ 51,767	$ 137,642	$ 259,671	$ 417,635
Percentage of Total Fees	5.90%	9.60%	7.40%	9.70%
INDIA
Fees	$ 24,842	$ 114,705	$ 187,826	$ 294,833
Percentage of Total Fees	2.80%	8.00%	5.40%	6.90%
FRANCE
Fees	$ 61,716	$ 112,063	$ 241,056	$ 328,395
Percentage of Total Fees	7.00%	7.80%	6.90%	7.60%
THAILAND
Fees	$ 67,919	$ 109,427	$ 261,132	$ 313,075
Percentage of Total Fees	7.80%	7.60%	7.50%	7.30%
KOREA, REPUBLIC OF
Fees	$ 54,951	$ 85,732	$ 206,272	$ 259,612
Percentage of Total Fees	6.30%	6.00%	5.90%	6.00%
CZECHIA
Fees	$ 46,709	$ 83,086	$ 215,923	$ 266,706
Percentage of Total Fees	5.30%	5.80%	6.20%	6.20%
UNITED KINGDOM
Fees	$ 52,484	$ 70,972	$ 202,241	$ 261,961
Percentage of Total Fees	6.00%	5.00%	5.80%	6.10%
FINLAND
Fees	$ 52,870	$ 75,135	$ 194,813	$ 221,599
Percentage of Total Fees	6.00%	5.20%	5.60%	5.20%
Other Countries [Member]
Fees	$ 49,185	$ 87,043	$ 207,846	$ 239,200
Percentage of Total Fees	5.60%	6.10%	5.90%	5.60%