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Note 4 - Prepaid Expenses and Other Current Assets (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
Prepaid expenses and other current assets consist of the following:
 
December 31,
2019
   
2018
 
Taxes Receivable – Canadian GST
   
1,267
     
1,192
 
      $
1,267
    $
1,192