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Note 12 - Convertible Note - Convertible Notes (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
May 01, 2023
Dec. 31, 2022
Total Secured Convertible Notes, net $ 1,137   $ 0
Original Issue Discount Senior Secured Convertible Debentures [Member]      
Principal amount 1,831    
Unamortized discount for proceeds allocated to embedded derivative liability and May 2023 Warrants (596) $ (300)  
Unamortized debt issuance costs (98) $ (300)  
Total Secured Convertible Notes, net $ 1,137