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Note 14 - Contingently Redeemable Noncontrolling Interests (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Redeemable Noncontrolling Interest [Table Text Block]
      $  
Balance at December 31, 2019    
-
 
Issuance    
5,196
 
Balance at December 31, 2020    
5,196