Note 4 - Debt - Summary of Credit and Other Debt Facilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Balance	$ 17,530	$ 17,980
Balance outstanding	$ 310	$ 1,376
Investec Bank Ltd. [Member]
Interest Rate	11.75%	10.50%
Balance	$ 3,369	$ 1,700
Balance outstanding	$ 310	$ 1,376
North Mill Capital [Member]
Interest Rate	10.40%	5.25%
Balance	$ 12,475	$ 14,399
USA - Resource Plus Sellers, Short-term [Member]
Interest Rate	1.85%	1.85%
Balance	$ 1,120	$ 1,000
National Australia Bank [Member]
Interest Rate		10.60%
Balance	$ 0	$ 156
Industrial Bank [Member]
Interest Rate	3.56%	4.00%
Balance	$ 283	$ 435
Industrial Bank and Commercial Bank of China [Member]
Interest Rate	4.00%	4.15%
Balance	$ 283	$ 290