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Note 14 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
Note 14 - Income Taxes (Details Textual) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Unrecognized Tax Benefits, Ending Balance	$ 300,000		$ 300,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total			0	$ 0
Income Tax Expense (Benefit), Total	$ (40,888)	$ 25,358	$ (11,612)	$ 129,106
Domestic Tax Authority [Member] \| Internal Revenue Service (IRS) [Member]
Open Tax Year			2014 2015 2016 2017 2018
Foreign Tax Authority [Member] \| Canada Revenue Agency [Member]
Open Tax Year			2014 2015 2016 2017 2018
Foreign Tax Authority [Member] \| New Zealand Revenue Agency [Member]
Open Tax Year			2014 2015 2016 2017 2018