Note 8 - Leases - Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Amortization of right-of-use assets	$ 30	$ 29
Interest on lease liabilities	3	4
Total finance lease cost	33	33
Operating lease cost	0	0
Short-term lease cost	103	90
Total lease cost	136	123
Operating cash flows from financing leases included in lease liabilities	3	4
Financing cash flows from financing leases included in lease liabilities	$ 30	$ 27
Weighted-average remaining lease term - financing leases (years) (Year)	1 year 3 months	2 years 3 months
Weighted-average discount rate - financing leases	4.75%	4.75%