Note 3 - Income and Mining Taxes - Major Components of Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Current:
Domestic	$ (992)	$ (1,528)
Foreign	(979)	(1,174)
Total current income and mining tax provision	(1,971)	(2,702)
Deferred:
Domestic	(5,183)	(5,341)
Foreign	5,339	4,801
Total deferred income and mining tax benefit (provision)	156	(540)
Total income and mining tax provision	$ (1,815)	$ (3,242)