Note 5 - Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Jun. 30, 2024
Amortization of right-of-use assets	$ 8	$ 8	$ 16	$ 15
Interest on lease liabilities	0	0	1	1
Total finance lease cost	8	8	17	16
Short-term lease cost	8	25	34	50
Total lease cost	16	33	51	66
Operating cash flows from financing leases included in lease liabilities	0	0	1	1
Financing cash flows from financing leases included in lease liabilities	$ 8	$ 8	$ 16	$ 15
Weighted-average remaining lease term - financing leases (years) (Year)	9 months		9 months		1 year 3 months
Weighted-average discount rate - financing leases	4.75%		4.75%		4.75%