Note 9 - Leases (Details Textual) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)
Operating Lease, Weighted Average Remaining Lease Term (Month)	4 years 207 days	4 years 207 days
Operating Lease, Cost	$ 27	$ 82
Short-term Lease, Cost	22	66
Operating Lease, Right-of-Use Asset	500	500
Operating Lease, Liability, Total	$ 500	$ 500