Note 3 - Income and Mining Taxes - Major Components of Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Current:
Domestic	$ (11,912)	$ (2,271)	$ (33,114)	$ (5,328)
Foreign	1,244	(15)	(576)	(15)
Total current income and mining tax provision	(10,668)	(2,286)	(33,690)	(5,343)
Deferred:
Domestic	(9,098)	(18,571)	(34,143)	(30,295)
Foreign	999	(1,254)	(1,834)	(2,110)
Total deferred income and mining tax provision	(8,099)	(19,825)	(35,977)	(32,405)
Total income and mining tax provision	$ (18,767)	$ (22,111)	$ (69,667)	$ (37,748)