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Note 16 - Other Income (Expense) (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Other Nonoperating Income (Expense) [Table Text Block]
Year ended December 31,
     
 
     
 
(dollars in thousands)
 
2019
   
2018
 
Gain (loss) on currency transactions
  $
(2,318
)   $
(1,454
)
Pension and non-pension benefits, excluding service cost
   
(1,573
)    
(1,232
)
Debt refinancing fees    
(525
)    
 
Other non-operating income (expense)
   
(27
)    
(78
)
Other income (expense)
  $
(4,443
)   $
(2,764
)