Note 3 - Leases - Schedule of Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2022 USD ($)
2023, Operating Leases	$ 83
2023, Financing Leases	77
2023	160
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	391
Total lease obligations, Financing Leases	298
Total lease obligations	689
Less: imputed interest, Operating Leases	27
Less: imputed interest, Financing Leases	15
Less: imputed interest	42
Financing lease obligations	140
Lease Liabilities, Current [Member]
Present value of net minimum lease obligations	364
Present value of net minimum lease obligations, Financing Leases	283
Present value of net minimum lease obligations	647
Less: lease liabilities - current, Operating Leases	148
Less: lease liabilities - current, Financing Leases	143
Less: lease liabilities - current	291
Lease Liabilities, Noncurrent [Member]
Operating lease obligations	216
Financing lease obligations	140
Lease liabilities - non-current	$ 356