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Note 11 - Cost Reduction Actions (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]
Balance at January 1, 2017   $
269
  
Additions    
213
  
Reductions    
(272
 )
Reversals    
(123
 )
Balance at December 31, 2017    
87
  
Additions    
769
  
Reductions    
(754
 )
Reversals    
—
  
Balance at December 31, 2018   $
102