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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2021
Property, Plant and Equipment [Line Items]          
Short-term investment maturity period     3 months    
Basic weighted average number of common shares outstanding 19,918,677 15,803,746 19,793,265 15,088,662  
Diluted weighted average number of common shares outstanding 19,918,677 15,803,746 20,019,461 15,088,662  
Exploration License Impairments $ 0 $ 0 $ 0 $ 0  
Fair Value, Recurring [Member]          
Property, Plant and Equipment [Line Items]          
Fair value, net asset (liability) $ 0   $ 0   $ 0
Minimum [Member]          
Property, Plant and Equipment [Line Items]          
Property and Equipment, estimated useful life 3 years   3 years    
Maximum [Member]          
Property, Plant and Equipment [Line Items]          
Property and Equipment, estimated useful life 30 years   30 years