Note 3 - Leases - Schedule of Future Minimum Lease Payments (Details) $ in Thousands	Mar. 31, 2022 USD ($)
2022, Operating Leases	$ 26
2022, Financing Leases	38
2022	64
2023, Operating Leases	104
2023, Financing Leases	154
2023	258
2024, Operating Leases	93
2024, Financing Leases	154
2024	247
2025, Operating Leases	0
2025, Financing Leases	67
2025	67
2026, Operating Leases	0
2026, Financing Leases	0
2026	0
Thereafter, Operating Leases	0
Thereafter, Financing Leases	0
Thereafter	0
Total lease obligations, Operating Leases	223
Total lease obligations, Financing Leases	413
Total lease obligations	636
Less: imputed interest, Operating Leases	15
Less: imputed interest, Financing Leases	28
Less: imputed interest	43
Present value of net minimum lease obligations	208
Present value of net minimum lease obligations, Financing Leases	385
Present value of net minimum lease obligations	593
Less: lease liabilities - current, Operating Leases	94
Less: lease liabilities - current, Financing Leases	137
Less: lease liabilities - current	231
Operating lease obligations	114
Financing lease obligations	248
Lease liabilities - non-current	$ 362