Note 16 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Aug. 31, 2022	Aug. 31, 2021
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%
Foreign Withholding Tax	$ 8,000	$ 113,000
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	1,170,100
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	329,800
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	159,000
Tax Credit Carryforward, Valuation Allowance	11,592,900	11,447,500
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	145,400	114,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	0	$ 0
Foreign Tax Authority [Member]
Tax Credit Carryforward, Amount	4,892,100
Federal and State Tax [Member]
Tax Credit Carryforward, Amount	$ 3,796,500