Quarterly report pursuant to Section 13 or 15(d)

Mineral Properties (Details)

v3.22.2.2
Mineral Properties (Details)
$ in Thousands
 9 Months Ended
Sep. 30, 2022
USD ($)
Balance At Beginning Of Period $ 35,067
Reclassify assets no longer held for sale 1,536
Change in estimated reclamation costs 299
Depletion And Amortization 936
Balance At Ending Of Period 35,966
Shirley Basin [Member]  
Balance At Beginning Of Period 17,362
Reclassify assets no longer held for sale 0
Change in estimated reclamation costs 299
Depletion And Amortization 0
Balance At Ending Of Period 17,661
Lost Creek Property [Member]  
Balance At Beginning Of Period 4,527
Reclassify assets no longer held for sale 0
Change in estimated reclamation costs 0
Depletion And Amortization 936
Balance At Ending Of Period 3,591
Other U.S. Properties [Member]  
Balance At Beginning Of Period 13,178
Reclassify assets no longer held for sale 1,536
Change in estimated reclamation costs 0
Depletion And Amortization 0
Balance At Ending Of Period $ 14,714