Note 4 - Debt - Unused Availability (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Unused Availability	$ 8,589	$ 5,446
UNITED STATES
Unused Availability	6,525	4,601
MEXICO
Unused Availability	0	1
AUSTRALIA
Unused Availability	0	390
SOUTH AFRICA
Unused Availability	$ 2,064	$ 454

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant