Note 11 - Segment and Geographic Information - Services Provided to Joint Ventures by Geographic Location (Details) - USD ($)	3 Months Ended		9 Months Ended
	May 31, 2019	May 31, 2018	May 31, 2019	May 31, 2018
Fees	$ 1,433,823	$ 1,508,500	$ 4,299,032	$ 4,624,532
Percentage of total fees	100.00%	100.00%	100.00%	100.00%
GERMANY
Fees	$ 212,825	$ 224,366	$ 643,154	$ 680,939
Percentage of total fees	14.80%	14.90%	15.00%	14.70%
POLAND
Fees	$ 181,057	$ 185,107	$ 551,430	$ 598,221
Percentage of total fees	12.60%	12.30%	12.80%	13.00%
JAPAN
Fees	$ 164,136	$ 183,335	$ 501,432	$ 529,412
Percentage of total fees	11.50%	12.20%	11.60%	11.40%
SWEDEN
Fees	$ 137,642	$ 155,588	$ 417,635	$ 448,707
Percentage of total fees	9.60%	10.30%	9.70%	9.70%
INDIA
Fees	$ 114,705	$ 49,778	$ 294,833	$ 274,980
Percentage of total fees	8.00%	3.30%	6.90%	5.90%
FRANCE
Fees	$ 112,063	$ 146,949	$ 328,395	$ 416,913
Percentage of total fees	7.80%	9.70%	7.60%	9.00%
THAILAND
Fees	$ 109,427	$ 110,894	$ 313,075	$ 325,205
Percentage of total fees	7.60%	7.40%	7.30%	7.00%
KOREA, REPUBLIC OF
Fees	$ 85,732	$ 96,574	$ 259,612	$ 279,524
Percentage of total fees	6.00%	6.40%	6.00%	6.00%
CZECH REPUBLIC
Fees	$ 83,086	$ 100,131	$ 266,706	$ 283,193
Percentage of total fees	5.80%	6.60%	6.20%	6.10%
UNITED KINGDOM
Fees	$ 70,972	$ 80,931	$ 261,961	$ 275,137
Percentage of total fees	5.00%	5.40%	6.10%	6.00%
FINLAND
Fees	$ 75,135	$ 81,402	$ 221,599	$ 247,574
Percentage of total fees	5.20%	5.40%	5.20%	5.40%
Other Countries [Member]
Fees	$ 87,043	$ 93,445	$ 239,200	$ 264,727
Percentage of total fees	6.10%	6.10%	5.60%	5.80%