Note 8 - Other Assets (Details Textual)	Mar. 31, 2019 NZD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2018 USD ($)
Other Assets, Current		$ 482,851	$ 374,617
Restricted Cash and Cash Equivalents, Total	$ 20,000	13,609	13,536
Other Assets, Noncurrent, Total		523,607	532,165
Wainwright [Member]
Assets, Noncurrent, Total		523,607	532,165
Cost Method Investments		$ 500,000	$ 500,000
Cost Method Investment, Ownership Percentage	10.00%	10.00%	10.00%
Other Assets, Noncurrent, Total		$ 23,607	$ 32,165