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Note 19 - Capital Stock (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Stock by Class [Table Text Block]
    Subordinate Voting Shares   Multiple Voting Shares   Total Common Shares
     
Number
     
Amount
     
Number
     
Amount
     
Number
     
Amount
 
                                                 
Balances as at:                                                
December 31, 2019    
38,519,517
    $
441,780
     
1,325,694
    $
373
     
39,845,211
    $
442,153
 
December 31, 2020    
38,863,742
     
457,620
     
1,325,694
     
373
     
40,189,436
     
457,993