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Note 10 - Leases - Right-of-Use Assets and Related Lease Liabilities (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Cash paid for operating lease liabilities | $ 66 | $ 150 | $ 133 | $ 214
Operating lease cost | 65 | 141 | 131 | 207
Cash paid for finance lease liabilities | 15 | 15 | 17 | 29
Interest expense | $ 2 | $ 2 | $ 2 | $ 5
Weighted-average remaining lease term (years) - operating leases (Year) | 1 year 4 months 24 days |  | 1 year 4 months 24 days |
Weighted-average discount rate - operating leases | 6.16% |  | 6.16% |
Weighted-average remaining lease term (years) - finance leases (Year) | 9 months 18 days |  | 9 months 18 days |
Weighted-average discount rate - finance leases | 7.48% |  | 7.48% |

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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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