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Mineral Property Interests (Details) - CAD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Statement [Line Items]    
Balance, beginning of the year $ 160,772,000 $ 39,714,000
Additions   4,246,000
Eastmain acquisition, mineral property interests acquired   125,606,000
Purchase of Homestake Ridge royalty 400,000  
Option payment received (260,000) (252,000)
Dispositions (50,000) (8,949,000)
Change in estimate of provision for site reclamation and closure (169,000) 273,000
Currency translation adjustment   134,000
Balance, end of the year 160,693,000 160,772,000
Quebec    
Statement [Line Items]    
Balance, beginning of the year 125,354,000 0
Additions   0
Eastmain acquisition, mineral property interests acquired   125,606,000
Option payment received (260,000) (252,000)
Dispositions (50,000) 0
Change in estimate of provision for site reclamation and closure 50,000 0
Currency translation adjustment   0
Balance, end of the year 125,094,000 125,354,000
Nunavut    
Statement [Line Items]    
Balance, beginning of the year 19,358,000 19,085,000
Additions   0
Eastmain acquisition, mineral property interests acquired   0
Option payment received 0 0
Dispositions 0 0
Change in estimate of provision for site reclamation and closure (219,000) 0
Currency translation adjustment   273,000
Balance, end of the year 19,139,000 19,358,000
British Columbia    
Statement [Line Items]    
Balance, beginning of the year 16,060,000 16,060,000
Additions   0
Eastmain acquisition, mineral property interests acquired   0
Purchase of Homestake Ridge royalty 400,000  
Option payment received   0
Dispositions   0
Change in estimate of provision for site reclamation and closure   0
Currency translation adjustment   0
Balance, end of the year 16,460,000 16,060,000
Peru    
Statement [Line Items]    
Balance, beginning of the year 0 4,569,000
Additions   4,246,000
Eastmain acquisition, mineral property interests acquired   0
Purchase of Homestake Ridge royalty 0  
Option payment received   0
Dispositions   (8,949,000)
Change in estimate of provision for site reclamation and closure   0
Currency translation adjustment   134,000
Balance, end of the year $ 0 $ 0