Note 14 - Leases - Lease Expense (Details) - USD ($)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating lease cost	$ 380,000	$ 380,000
Operating cash flows from operating leases	$ (380,000)	$ (380,000)
Weighted-average remaining lease term (Year)	8 years	9 years
Weighted-average discount rate	4.25%	4.25%