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Note 4 - Accounts Receivable (Tables)
12 Months Ended
Dec. 31, 2020
Statement Line Items [Line Items]  
Components of trade and other receivables [text block]
      December 31,       December 31,  
      2020       2019  
Receivable from Minera Juanicipio (
see Note 14
)
  $
658
    $
-
 
Value added tax ("IVA" and "GST")    
122
     
82
 
Other receivables    
117
     
1
 
    $
897
    $
83