Note 3 - Debt - Unused Availability (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Unused Availability	$ 8,945	$ 5,446
United States / Canada [Member]
Unused Availability	6,498	4,601
AUSTRALIA
Unused Availability	451	390
SOUTH AFRICA
Unused Availability	1,996	454
MEXICO
Unused Availability	0
CHINA
Unused Availability	$ 0	$ 0