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Mineral Properties - Awak Mas (Details) - USD ($)
$ in Thousands
 3 Months Ended
Jan. 28, 2022
Mar. 31, 2022
Dec. 31, 2021
Property, Plant and Equipment [Line Items]      
Gain (Loss) On Disposal Of Mineral Property Interests, Net   $ 2,883  
PT Masmindo Dwi Area | Awak Mas      
Property, Plant and Equipment [Line Items]      
NSR Cancellation Proceeds $ 2,500    
Gain (Loss) On Disposal Of Mineral Property Interests, Net   $ 2,883  
Disposal Group, Deferred Gain on Disposal     $ 383