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Note 7 - Exploration and Evaluation Assets (Tables)
 12 Months Ended
Dec. 31, 2020
Statement Line Items [Line Items]  
Disclosure of the components of exploration and evaluation assets [text block]
      Year ended       Year ended  
      December 31, 2020       December 31, 2019  
Exploration and evaluation assets:                
Acquisition costs                
Option payments   $
250
     $
75
  
Reclamation obligation    
149
      
260
  
Total acquisition costs    
399
      
335
  
Geochemical    
78
      
142
  
Camp and site costs    
411
      
354
  
Drilling    
198
      
-
  
Geological consulting    
2,216
      
1,784
  
Geophysical    
430
      
100
  
Land taxes and government fees    
787
      
411
  
Legal, community and other consultation costs    
393
      
260
  
Travel    
294
      
232
  
Total for the year    
5,206
      
3,618
  
Balance, beginning of year    
7,266
      
3,648
  
Balance, end of year   $
12,472
     $
7,266