Note 12 - 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, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Fees	$ 1,442,048	$ 1,351,913	$ 3,941,667	$ 3,808,384
Percentage of total fees	100.00%	100.00%	100.00%	100.00%
GERMANY
Fees	$ 212,257	$ 242,158	$ 614,766	$ 664,812
Percentage of total fees	14.70%	17.90%	15.60%	17.40%
POLAND
Fees	$ 180,969	$ 167,237	$ 483,626	$ 452,260
Percentage of total fees	12.60%	12.40%	12.30%	11.80%
JAPAN
Fees	$ 153,903	$ 148,091	$ 445,662	$ 416,241
Percentage of total fees	10.70%	11.00%	11.30%	10.90%
SWEDEN
Fees	$ 150,139	$ 66,239	$ 314,664	$ 189,556
Percentage of total fees	10.40%	4.90%	8.00%	5.00%
THAILAND
Fees	$ 104,771	$ 132,548	$ 339,852	$ 395,611
Percentage of total fees	7.30%	9.80%	8.60%	10.40%
FRANCE
Fees	$ 112,455	$ 87,588	$ 293,240	$ 250,373
Percentage of total fees	7.80%	6.50%	7.40%	6.60%
KOREA, REPUBLIC OF
Fees	$ 92,954	$ 74,085	$ 284,435	$ 247,730
Percentage of total fees	6.40%	5.50%	7.20%	6.50%
INDIA
Fees	$ 90,469	$ 70,610	$ 229,200	$ 223,137
Percentage of total fees	6.30%	5.20%	5.80%	5.90%
UNITED KINGDOM
Fees	$ 87,768	$ 135,068	$ 227,140	$ 292,216
Percentage of total fees	6.10%	10.00%	5.80%	7.70%
FINLAND
Fees	$ 78,012	$ 55,876	$ 221,294	$ 177,704
Percentage of total fees	5.40%	4.10%	5.60%	4.70%
CZECH REPUBLIC
Fees	$ 74,135	$ 54,537	$ 218,249	$ 176,470
Percentage of total fees	5.10%	4.00%	5.50%	4.60%
Other Countries [Member]
Fees	$ 104,216	$ 117,876	$ 269,539	$ 322,274
Percentage of total fees	7.20%	8.70%	6.90%	8.50%