Note 4 - Debt - Summary of Credit and Other Debt Facilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Balance	$ 16,582			$ 17,530
Balance outstanding	$ 1,722	$ 1,538	$ 1,711	310
USA - Resource Plus Sellers [Member]
Interest Rate	4.30%
Interest Rate	4.30%
Balance outstanding	$ 1,722			$ 0
Investec Bank Ltd. [Member]
Interest Rate				11.75%
Balance	0			$ 3,369
Interest Rate				11.75%
Balance outstanding	$ 0			$ 310
North Mill Capital [Member]
Interest Rate	9.40%			10.40%
Balance	$ 16,082			$ 12,475
Interest Rate	9.40%			10.40%
USA - Resource Plus Sellers, Short-term [Member]
Interest Rate	4.30%			1.85%
Balance	$ 500			$ 1,120
Interest Rate	4.30%			1.85%
Industrial Bank [Member]
Interest Rate				3.56%
Balance	$ 0			$ 283
Interest Rate				3.56%
Industrial Bank and Commercial Bank of China [Member]
Interest Rate				4.00%
Balance	$ 0			$ 283
Interest Rate				4.00%