Note 3 - Leases - Schedule of Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Jun. 30, 2023
2024, Operating Leases	$ 83
2024, Financing Leases	90
2024	173
2025, Operating Leases	142
2025, Financing Leases	94
2025	236
2026, Operating Leases	0
2026, Financing Leases	27
2026	27
2027, Operating Leases	0
2027, Financing Leases	27
2027	27
2028, Operating Leases	0
2028, Financing Leases	25
2028	25
Thereafter, Operating Leases	0
Thereafter, Financing Leases	0
Thereafter	0
Total lease obligations, Operating Leases	225
Total lease obligations, Financing Leases	263
Total lease obligations	488
Less: imputed interest, Operating Leases	(9)
Less: imputed interest, Financing Leases	(18)
Less: imputed interest	(27)
Lease Liabilities, Current [Member]
Present value of net minimum lease obligations, Operating Leases	216
Present value of net minimum lease obligations, Financing Leases	245
Present value of net minimum lease obligations	461
Less: lease liabilities - current, Operating Leases	(160)	$ (148)
Less: lease liabilities - current, Financing Leases	(149)	(168)
Less: lease liabilities - current	(309)
Lease Liabilities, Noncurrent [Member]
Operating lease obligations	56	130
Financing lease obligations	96	$ 161
Lease liabilities - non-current	$ 152