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Note 4 - Debt Obligations - Schedule of Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Total current portion of debt $ 66 $ 66
Total long-term debt, net of current 284 289
Total 350 355
Vehicle Loan [Member]    
Long-term debt, current 13 13
Total long-term debt, net of current 51 55
Paycheck Protection Program CARES Act [Member]    
SBA Paycheck Protection Program loan 43 43
SBA Paycheck Protection Program loans, matures May 2025 97 97
Economic Injury Disaster Loan [Member]    
Long-term debt, current 10 10
Total long-term debt, net of current $ 136 $ 137