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PROPERTY PLANT AND EQUIPMENT (Details)
 12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2021
CAD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2020
CAD ($)
Statement [Line Items]        
Property, plant and equipment, ending $ 286,424      
Property, plant and equipment, beginning   $ 256,870,000    
Property, plant and equipment, ending   254,462,000   $ 256,870,000
Depreciation (2,564,000)     (2,235,000)
NBV | Total Property Plant And Equipments [Member]        
Statement [Line Items]        
Property, plant and equipment, beginning   256,870,000    
Property, plant and equipment, ending 254,462,000     256,870,000
Accumulated And Depreciation And Amortisation [Member] | Property Plant And Equipments [Member]        
Statement [Line Items]        
Property, plant and equipment, beginning (29,851,000)   $ (27,715,000)  
Disposals 483,000     99,000
Reclamation adjustment (note 13) 280,000     243,000
Property, plant and equipment, ending (31,962,000)   (29,851,000)  
Amortization 280,000     243,000
Depreciation (2,594,000)     (2,235,000)
Cost | Total Property Plant And Equipments [Member]        
Statement [Line Items]        
Property, plant and equipment, beginning 286,721,000   284,974,000  
Additions 1,302,000     304,000
Disposals (487,000)     (101,000)
Reclamation adjustment (note 13) (1,111,000)     1,544,000
Recoveries (1,000)      
Property, plant and equipment, ending     286,721,000  
Mineral Properties | Cost        
Statement [Line Items]        
Property, plant and equipment, beginning 179,743,000   179,481,000  
Additions 46,000     262,000
Disposals 0     0
Reclamation adjustment (note 13) 0     0
Recoveries (1,000)      
Property, plant and equipment, ending 179,788,000   179,743,000  
Mineral Properties | NBV        
Statement [Line Items]        
Property, plant and equipment, beginning   179,743,000    
Property, plant and equipment, ending 179,788,000     179,743,000
Mineral Properties [Member] | Accumulated Depreciation And Amortisation [Member]        
Statement [Line Items]        
Property, plant and equipment, beginning 0   0  
Disposals 0     0
Reclamation adjustment (note 13) 0     0
Property, plant and equipment, ending 0   0  
Amortization 0     0
Depreciation 0     0
Plant and Equipment Owned | Cost        
Statement [Line Items]        
Property, plant and equipment, beginning 106,087,000   104,587,000  
Additions 1,173,000     16,000
Disposals (466,000)     (60,000)
Reclamation adjustment (note 13) (1,111,000)     1,544,000
Recoveries 0      
Property, plant and equipment, ending 105,683,000   106,087,000  
Plant and Equipment Right of Use | Cost        
Statement [Line Items]        
Property, plant and equipment, beginning 891,000 891,000 906,000  
Additions 83,000     26,000
Disposals (21,000)     (41,000)
Reclamation adjustment (note 13) 0     0
Property, plant and equipment, ending 953,000   891,000 891,000
Plant and Equipment Owned | Accumulated Depreciation And Amortisation [Member]        
Statement [Line Items]        
Property, plant and equipment, beginning (29,495,000) (29,495,000) (27,518,000)  
Disposals 466,000     60,000
Reclamation adjustment (note 13) 280,000     243,000
Property, plant and equipment, ending (31,420,000)   (29,495,000) (29,495,000)
Amortization 280,000     243,000
Depreciation (2,391,000)     (2,037,000)
Plant and Equipment Owned | NBV        
Statement [Line Items]        
Property, plant and equipment, beginning   76,592,000    
Property, plant and equipment, ending 74,263,000     76,592,000
Plant And Equipments Right Of Use [Member] | NBV        
Statement [Line Items]        
Property, plant and equipment, beginning   535,000    
Property, plant and equipment, ending 411,000     535,000
Plant And Equipments Right Of Use [Member] | Accumulated And Depreciation And Amortisation [Member]        
Statement [Line Items]        
Property, plant and equipment, beginning (356,000) $ (356,000) (197,000)  
Disposals 17,000     39,000
Reclamation adjustment (note 13) 0     0
Property, plant and equipment, ending (542,000)   $ (356,000) (356,000)
Amortization 0     0
Depreciation $ (203,000)     $ (198,000)