Note 3 - Debt - Summary of Credit and Other Debt Facilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Interest Rate
Balance	$ 19,323	$ 17,980
Balance	19,323	17,980
Balance outstanding	$ 922	$ 1,376
Investec Bank Ltd. [Member]
Interest Rate	11.75%	10.50%
Balance	$ 2,522	$ 1,700
Balance	2,522	1,700
Balance outstanding	$ 922	$ 1,376
National Australia Bank [Member]
Interest Rate	12.10%	10.60%
Balance	$ 132	$ 156
Balance	$ 132	$ 156
Industrial Bank and Commercial Bank of China [Member]
Interest Rate	4.15%	4.15%
Balance	$ 0	$ 290
Balance	$ 0	$ 290
Industrial Bank [Member]
Interest Rate	4.00%	4.00%
Balance	$ 411	$ 435
Balance	$ 411	$ 435
North Mill Capital [Member]
Interest Rate	10.40%	5.25%
Balance	$ 15,558	$ 14,399
Balance	$ 15,558	$ 14,399
Resouces Plus Seller Notes [Member]
Interest Rate	1.85%	1.85%
Balance	$ 700	$ 1,000
Balance	$ 700	$ 1,000