Note 10 - Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands |
Dec. 31, 2022 |
Dec. 31, 2021 |
[1] | ||
|---|---|---|---|---|---|
| 2023 | $ 104 | ||||
| Total future minimum lease payments | 104 | ||||
| Less imputed interest | (4) | ||||
| Total | 100 | ||||
| Operating lease liabilities | 100 | ||||
| Operating lease liabilities, current portion | (100) | $ (182) | |||
| Operating lease liabilities, net of current portion | $ 0 | $ 101 | |||
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