Note 8 - Other Assets (Details Textual)	Dec. 31, 2019 NZD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2019 NZD ($)	Jun. 30, 2019 USD ($)
Other Assets, Current		$ 272,814		$ 546,105
Available-for-sale Securities, Total		3,800,000		3,800,000
Restricted Cash and Cash Equivalents, Total	$ 20,000	13,468	$ 20,000	13,436
Other Assets, Noncurrent, Total		523,607		523,607
Wainwright [Member]
Assets, Noncurrent, Total		523,607		523,607
Cost Method Investments		$ 514,435		514,435
Cost Method Investment, Ownership Percentage	10.00%	10.00%
Other Assets, Noncurrent, Total		$ 500,980		13,455
Deposit Assets, Total		$ 9,172		$ 9,172