Note 3 - Leases - Schedule of Future Minimum Lease Payments (Details) $ in Thousands	Mar. 31, 2023 USD ($)
2023, Operating Leases	$ 42
2023, Financing Leases	38
2023	80
2024, Operating Leases	166
2024, Financing Leases	154
2024	320
2025, Operating Leases	142
2025, Financing Leases	67
2025	209
2026, Operating Leases	0
2026, Financing Leases	0
2026	0
2027, Operating Leases	0
2027, Financing Leases	0
2027	0
Thereafter, Operating Leases	0
Thereafter, Financing Leases	0
Thereafter	0
Total lease obligations, Operating Leases	350
Total lease obligations, Financing Leases	259
Total lease obligations	609
Less: imputed interest, Operating Leases	22
Less: imputed interest, Financing Leases	11
Less: imputed interest	33
Financing lease obligations	103
Lease Liabilities, Current [Member]
Present value of net minimum lease obligations	328
Present value of net minimum lease obligations, Financing Leases	248
Present value of net minimum lease obligations	576
Less: lease liabilities - current, Operating Leases	150
Less: lease liabilities - current, Financing Leases	145
Less: lease liabilities - current	295
Lease Liabilities, Noncurrent [Member]
Operating lease obligations	178
Financing lease obligations	103
Lease liabilities - non-current	$ 281