Note 14 - Income Taxes (Details Textual) - USD ($)	3 Months Ended	9 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Unrecognized Tax Benefits, Ending Balance	$ 0.3		$ 0.3
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total	0	$ 0	0	$ 0
Income Tax Expense (Benefit), Total	$ 420,940	$ 480,991	$ 743,628	$ 1,685,754
Foreign Tax Authority [Member] \| Canada Revenue Agency [Member]
Open Tax Year			2017 2018 2019 2020
Foreign Tax Authority [Member] \| New Zealand Revenue Agency [Member]
Open Tax Year			2017 2018 2019 2020
Domestic Tax Authority [Member] \| Internal Revenue Service (IRS) [Member]
Open Tax Year			2017 2018 2019 2020

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Tax year that remains open to examination under enacted tax laws, in YYYY format.

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Amount of unrecognized tax benefits.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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