Quarterly report [Sections 13 or 15(d)]

Mineral Properties (Details)

v3.25.3
Mineral Properties (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2025
USD ($)
Mineral Properties  
Beginning balance $ 39,380
Change in estimated asset retirement costs 2,710
Depletion and amortization (1,213)
Ending balance 40,877
Lost Creek Property  
Mineral Properties  
Beginning balance 6,812
Change in estimated asset retirement costs 2,636
Depletion and amortization (1,213)
Ending balance 8,235
Shirley Basin Project  
Mineral Properties  
Beginning balance 17,854
Change in estimated asset retirement costs 74
Ending balance 17,928
Other U.S. Properties  
Mineral Properties  
Beginning balance 14,714
Ending balance $ 14,714