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, 2025	Dec. 31, 2024	Dec. 31, 2023
Current:
United States	$ 0	$ 0	$ 0
State and state mining taxes	(17,469)	(6,758)	(3,846)
Canada	0	0	0
Canada - provincial mining taxes	(9,531)	(3,968)	(3,322)
Total current income and mining tax (provision) benefit	(27,000)	(10,726)	(7,168)
Deferred:
United States	(75,599)	(24,771)	(13,929)
State and state mining taxes	(17,242)	(5,664)	(3,129)
Canada	(15,720)	3,715	9,418
Canada - provincial mining taxes	(21,906)	7,032	13,586
Total deferred income and mining tax (provision) benefit	(130,467)	(19,688)	5,946
Total income and mining tax (provision) benefit	$ (157,467)	$ (30,414)	$ (1,222)