Note 13 - Income Taxes - Income Tax Reconciliation (Details) - USD ($)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Federal tax expense (benefit) at statutory rate, amount	$ 490,638	$ 127,861
State Income Taxes, amount	43,517	36,760
Permanent Differences, amount	26,724	112,814
Foreign tax credit	(58,203)	(43,930)
Change in Valuation Allowance, amount	(2,573)	(9,761)
Foreign Rate Differential, amount	62,859	123,270
Total	$ 562,962	$ 347,014
Federal tax expense (benefit) at statutory rate, percent	21.00%	21.00%
State Income Taxes, percent	1.86%	6.04%
Permanent Differences, percent	1.15%	18.52%
Foreign Rate Differential, percent	2.69%	20.25%
Foreign tax credit	(2.49%)	(7.22%)
Change in Valuation Allowance, percent	(0.11%)	(1.60%)
Total tax expense	24.10%	56.99%