Note 7 - Other Assets (Details Textual)	3 Months Ended	12 Months Ended
	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)		Sep. 30, 2021 NZD ($)	Jun. 30, 2021 NZD ($)
Other Assets, Current	$ 318,218	$ 399,524	[1]
Marketable Securities, Total	1,300,000	1,800,000
Restricted Cash and Cash Equivalents, Total	13,748	13,989		$ 20,000	$ 20,000
Wainwright [Member]
Assets, Noncurrent, Total	540,160	540,160
Equity Securities without Readily Determinable Fair Value, Amount	$ 500,000	500,000
Equity Securities without Readily Determinable Fair Value, Ownership Percentage	10.00%			10.00%
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount	$ 0	0
Deposit Assets, Total	$ 40,160	$ 40,160

[1] Derived from audited financial statements