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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF INCOME/(LOSS) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Operating income/(expense):    
Gain on disposal of mineral property interests (Note 3)   $ 2,883
Exploration, property evaluation and holding costs $ (804) (1,789)
Corporate administration (1,168) (1,401)
Depreciation and amortization (10) (14)
Total operating expense, net (1,982) (321)
Non-operating income:    
Interest income 69 1
Other income/(expense) (58)  
Total non-operating income 11 1
Loss before income taxes (1,971) (320)
Net loss $ (1,971) $ (320)
Basic:    
Weighted average number of shares outstanding (in shares) 119,041,318 117,444,389
Net loss per share $ (0.02) $ 0.00
Diluted:    
Weighted average number of shares outstanding (in shares) 119,041,318 117,444,389
Net loss per share $ (0.02) $ 0.00