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Note 10 - Leases - Schedule of Lease Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Total lease assets $ 43 $ 64
Total lease liabilities 185 316
Other Noncurrent Assets [Member]    
Operating lease assets 0 0
Property, Plant and Equipment [Member]    
Finance lease assets 43 64
Current Liabilities [Member]    
Operating, current 120 114
Finance, current 44 19
Noncurrent Liabilities [Member]    
Operating, noncurrent 21 141
Finance, noncurrent $ 0 $ 42