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Note 25 - Captive Insurance Company (Tables)
 12 Months Ended
Dec. 31, 2017
Notes Tables  
Schedule of Unpaid Losses and Loss Adjustments [Table Text Block]
   
201
7
    
201
6
  
Balance at the beginning of the year
   $
19,515
     $
20,046
  
Incurred related to:
                
Current year
    
5,915
      
6,247
  
Prior years
    
(727
 )    
(67
 )
Total incurred
    
5,188
      
6,180
  
Paid related to:
                
Current year
    
(742
 )    
(962
 )
Prior years
    
(4,996
 )    
(5,749
 )
Total paid
    
(5,738
 )    
(6,711
 )
Balance at the end of the year
   $
18,965
     $
19,515