Quarterly report pursuant to Section 13 or 15(d)

Mineral Properties (Details)

v3.21.2
Mineral Properties (Details)
 6 Months Ended
Jun. 30, 2021
USD ($)
Balance at beginning of period $ 39,184,000
Reclassify assets held for sale (note 4) (2,413,000)
Depletion and amortization (1,017,000)
Balance at end of period 35,754,000
Lost Creek Property [Member]  
Balance at beginning of period 6,276,000
Reclassify assets held for sale (note 4) 0
Depletion and amortization (1,017,000)
Balance at end of period 5,259,000
Pathfinder Properties [Member]  
Balance at beginning of period 19,730,000
Reclassify assets held for sale (note 4) (2,413,000)
Depletion and amortization 0
Balance at end of period 17,317,000
Other U.S. Properties [Member]  
Balance at beginning of period 13,178,000
Reclassify assets held for sale (note 4) 0
Depletion and amortization 0
Balance at end of period $ 13,178,000