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, 2018	May 31, 2017	May 31, 2018	May 31, 2017
Fees	$ 1,508,500	$ 1,442,048	$ 4,624,532	$ 3,941,667
Percentage of total fees	100.00%	100.00%	100.00%	100.00%
GERMANY
Fees	$ 224,366	$ 212,257	$ 680,939	$ 614,766
Percentage of total fees	14.90%	14.70%	14.70%	15.60%
POLAND
Fees	$ 185,107	$ 180,969	$ 598,221	$ 483,626
Percentage of total fees	12.30%	12.60%	13.00%	12.30%
JAPAN
Fees	$ 183,335	$ 153,903	$ 529,412	$ 445,662
Percentage of total fees	12.20%	10.70%	11.40%	11.30%
SWEDEN
Fees	$ 155,588	$ 150,139	$ 448,707	$ 314,664
Percentage of total fees	10.30%	10.40%	9.70%	8.00%
FRANCE
Fees	$ 146,949	$ 112,455	$ 416,913	$ 293,240
Percentage of total fees	9.70%	7.80%	9.00%	7.40%
THAILAND
Fees	$ 110,894	$ 104,771	$ 325,205	$ 339,852
Percentage of total fees	7.40%	7.30%	7.00%	8.60%
CZECH REPUBLIC
Fees	$ 100,131	$ 74,135	$ 283,193	$ 218,249
Percentage of total fees	6.60%	5.10%	6.10%	5.50%
KOREA, REPUBLIC OF
Fees	$ 96,574	$ 92,954	$ 279,524	$ 284,435
Percentage of total fees	6.40%	6.40%	6.00%	7.20%
FINLAND
Fees	$ 81,402	$ 78,012	$ 247,574	$ 221,294
Percentage of total fees	5.40%	5.40%	5.40%	5.60%
UNITED KINGDOM
Fees	$ 80,931	$ 87,768	$ 275,137	$ 227,140
Percentage of total fees	5.40%	6.10%	6.00%	5.80%
INDIA
Fees	$ 49,778	$ 90,469	$ 274,980	$ 229,200
Percentage of total fees	3.30%	6.30%	5.90%	5.80%
Other Countries [Member]
Fees	$ 93,445	$ 104,216	$ 264,727	$ 269,539
Percentage of total fees	6.10%	7.20%	5.80%	6.90%