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Note 13 - Accumulated Other Comprehensive Loss (Tables)
 3 Months Ended
Mar. 31, 2017
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
 
 
Unrealized Losses on Available-for-Sale Securities
 
 
Foreign Currency Translation Adjustments
 
 
Total
 
Balance as of January 1, 2017
   $
(1,023
 )   $
(3,192
 )   $
(4,215
 )
Other comprehensive income before reclassifications
    
202
     
1,306
     
1,508
 
Amounts reclassified from accumulated other comprehensive loss
    
-
     
-
     
-
 
Net current period other comprehensive income
    
202
     
1,306
     
1,508
 
Balance as of March 31, 2017
   $
(821
 )   $
(1,886
 )   $
(2,707
 )