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Note 3 - Debt - Unused Availability (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Unused Availability $ 4,395 $ 8,589
United States / Canada [Member]    
Unused Availability 4,395 6,525
SOUTH AFRICA    
Unused Availability $ 0 $ 2,064