Note 7 - Income and Mining Taxes - Schedule of Components of Income and Mining Tax Benefit (Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current:
Domestic	$ (6,758)	$ (3,846)	$ (3,915)
Foreign	(3,968)	(3,322)	(5,119)
Total current income and mining tax (provision) benefit	(10,726)	(7,168)	(9,034)
Deferred:
Domestic	(30,435)	(17,058)	2,064
Foreign	10,747	23,004	14,536
Total deferred income and mining tax (provision) benefit	(19,688)	5,946	16,600
Total benefit (provision), Amount	$ (30,414)	$ (1,222)	$ 7,566