Note 3 - Leases - Schedule of Balance Sheet Presentation of Operating and Finance Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Jun. 30, 2023
Assets:
Operating lease assets	$ 191	$ 262
Total lease assets	620	746
Liabilities:
Total lease liabilities	461	607
Property and Equipment, Net [Member]
Assets:
Financing lease assets	429	484
Lease Liabilities, Current [Member]
Liabilities:
Operating lease obligations	160	148
Financing lease obligations	149	168
Lease Liabilities, Noncurrent [Member]
Liabilities:
Operating lease obligations	56	130
Financing lease obligations	$ 96	$ 161