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Note 10 - Noncontrolling Interests (Tables)
3 Months Ended
Mar. 31, 2019
Notes Tables  
Redeemable Noncontrolling Interest [Table Text Block]
   
2019
   
2018
 
Balance at January 1,
  $
23,682
    $
16,143
 
Income
   
92
     
92
 
Distributions
   
(90
)    
(89
)
Balance at March 31,
 
$
23,684
   
$
16,146