Note 8 - Leases - Lease Expense (Details) - Continuing Operations [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating lease cost	$ 44	$ 53
Short-term lease cost	124	102
Total lease cost	168	155
Operating cash flows from operating leases	44	53
Net finance lease liabilities	$ 93	$ 0
Weighted-average remaining lease term (in years) (Year)	3 years 3 months
Weighted-average discount rate	4.75%	0.00%
Weighted-average remaining lease term (in years) (Year)		9 months 29 days
Weighted-average discount rate	0.00%	4.11%