Quarterly report pursuant to Section 13 or 15(d)

Mineral Properties (Details)

v3.22.1
Mineral Properties (Details)
 3 Months Ended
Mar. 31, 2022
USD ($)
Balance At Beginning Of Period $ 35,067,000
Depletion And Amortization 312,000
Balance At End Of Period 34,755,000
Lost Creek Property [Member]  
Balance At Beginning Of Period 4,527,000
Depletion And Amortization 312,000
Balance At End Of Period 4,215,000
Pathfinder Properties [Member]  
Balance At Beginning Of Period 17,362,000
Depletion And Amortization 0
Balance At End Of Period 17,362,000
Other U.S. Properties [Member]  
Balance At Beginning Of Period 13,178,000
Depletion And Amortization 0
Balance At End Of Period $ 13,178,000