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Note 22 - Accumulated Other Comprehensive Income (Tables)
 12 Months Ended
Dec. 31, 2017
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
Foreign
Currency
Translation Adjustments
    
Unrealized
Gains/(Losses)
R
elated to
Available-for-Sale
Securities
    
Unrealized
Gains/(Losses)
on Interest
Rate Swaps
    
Total
  
Balance as of January 1, 2016
   $
6,616
     $
398
     $
(1,426
 )   $
5,588
  
Other comprehensive income before reclassifications
    
(281
 )    
8
      
451
      
178
  
Amounts reclassified from AOCI
    
-
      
-
      
-
      
-
  
Net current-period other comprehensive income
    
(281
 )    
8
      
451
      
178
  
Balance as of December 31, 2016
   $
6,335
     $
406
     $
(975
 )   $
5,766
  
Other comprehensive income before reclassifications
    
3,711
      
(1,542
 )    
631
      
2,800
  
Amounts reclassified from AOCI (1)
    
(10,046
 )    
-
      
-
      
(10,046
 )
Net current-period other comprehensive income
    
(6,335
 )    
(1,542
 )    
631
      
(7,246
 )
Balance as of December 31, 2017
   $
-
     $
(1,136
 )   $
(344
 )   $
(1,480
 )