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	6 Months Ended
Feb. 29, 2020	Feb. 28, 2019	Feb. 29, 2020	Feb. 28, 2019
Fees	$ 1,256,213	$ 1,436,774	$ 2,614,538	$ 2,865,209
Percentage of Total Fees	100.00%	100.00%	100.00%	100.00%
GERMANY
Fees	$ 208,128	$ 215,337	$ 420,229	$ 430,328
Percentage of Total Fees	16.60%	15.00%	16.10%	15.00%
POLAND
Fees	$ 170,916	$ 188,529	$ 365,894	$ 370,374
Percentage of Total Fees	13.60%	13.10%	14.00%	12.90%
JAPAN
Fees	$ 150,150	$ 167,496	$ 314,079	$ 337,296
Percentage of Total Fees	12.00%	11.70%	12.00%	11.70%
SWEDEN
Fees	$ 98,398	$ 149,750	$ 207,904	$ 279,993
Percentage of Total Fees	7.80%	10.40%	8.00%	9.80%
THAILAND
Fees	$ 90,878	$ 105,299	$ 193,212	$ 203,647
Percentage of Total Fees	7.20%	7.30%	7.40%	7.10%
FRANCE
Fees	$ 85,709	$ 106,270	$ 179,340	$ 216,332
Percentage of Total Fees	6.80%	7.40%	6.90%	7.60%
UNITED KINGDOM
Fees	$ 64,279	$ 96,209	$ 149,758	$ 190,990
Percentage of Total Fees	5.10%	6.70%	5.70%	6.70%
CZECH REPUBLIC
Fees	$ 80,200	$ 93,928	$ 169,214	$ 183,620
Percentage of Total Fees	6.40%	6.60%	6.50%	6.40%
INDIA
Fees	$ 80,024	$ 85,401	$ 162,984	$ 180,128
Percentage of Total Fees	6.40%	5.90%	6.20%	6.30%
KOREA, REPUBLIC OF
Fees	$ 75,289	$ 87,413	$ 151,321	$ 173,880
Percentage of Total Fees	6.00%	6.10%	5.80%	6.10%
FINLAND
Fees	$ 74,001	$ 64,648	$ 141,942	$ 146,464
Percentage of Total Fees	5.90%	4.50%	5.40%	5.10%
Other Countries [Member]
Fees	$ 78,241	$ 76,494	$ 158,661	$ 152,157
Percentage of Total Fees	6.20%	5.30%	6.10%	5.30%