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Note 9 - Debentures - Debenture (Details) - Original Issue Discount Senior Secured Convertible Debentures [Member] - USD ($)
$ in Thousands
Jun. 30, 2023
Apr. 27, 2023
Principal amount $ 3,117  
Unamortized discount (1,696) $ (300)
Unamortized debt issuance costs (236)  
Total Convertible Note, net $ 1,185 $ 3,300