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Note 5 - Commitments and Contingencies - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Operating lease right-of-use assets $ 2,258 $ 2,449
Current portion of operating lease liability 372 338
Operating lease liability 1,995 2,189
Total operating lease liabilities 2,367 2,527
Total finance lease liabilities 2,667  
Property, Plant and Equipment [Member]    
Property and equipment, at cost 2,889 3,045
Accumulated depreciation (168) (112)
Property and equipment, net 2,721 2,933
Other Current Liabilities [Member]    
Other current liability (57) 71
Other Noncurrent Liabilities [Member]    
Other long term liabilities 2,724 2,911
Other Liabilities [Member]    
Total finance lease liabilities $ 2,667 $ 2,982