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Note 9 - Convertible Note - Debenture (Details) - Original Issue Discount Senior Secured Convertible Debentures [Member] - USD ($) $ in Thousands | Sep. 30, 2023 | Apr. 27, 2023
--- | --- | ---
Principal amount | $ 2,567 |
Unamortized discount | (1,136) | $ (300)
Unamortized debt issuance costs | (161) |
Total Convertible Note, net | $ 1,270 | $ 3,300

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