Quarterly report pursuant to Section 13 or 15(d)

Mineral Properties (Details)

v3.23.3
Mineral Properties (Details)
$ in Thousands
 9 Months Ended
Sep. 30, 2023
USD ($)
Beginning balance $ 35,682
Change in estimated reclamation costs 38
Depletion And Amortization (828)
Ending balance 34,892
Shirley Basin [Member]  
Beginning balance 17,688
Change in estimated reclamation costs 38
Ending balance 17,726
Lost Creek Property [Member]  
Beginning balance 3,280
Change in estimated reclamation costs 0
Depletion And Amortization (828)
Ending balance 2,452
Other U.S. Properties [Member]  
Beginning balance 14,714
Change in estimated reclamation costs 0
Ending balance $ 14,714