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Note 13 - Accumulated Other Comprehensive Income (Loss)
 12 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Comprehensive Income (Loss) Note [Text Block]
13.
Accumulated Other Comprehensive Income (Loss)
 
Accumulated other comprehensive income (loss) (AOCI), net of tax, is as follows:
 
(dollars in thousands)
  
Foreign Currency Translation
    
Derivative Instruments
  
 
Pension and Other Post-retirement Benefits
  
 
Total Accumulated Comprehensive Loss
  
Balance on December 31, 2017
   $
(16,183
 )   $
351
  
 
 $
(89,340
 )
 
 $
(105,172
 )
                                 
Cumulative-effect adjustment for the adoption of ASU 2017-12
    
—
      
(275
 )
 
  
—
  
 
  
(275
 )
                                 
Amounts recognized into AOCI    
(7,057
 )    
(3,242
 )
 
  
(5,245
 )
 
  
(15,544
 )
Currency impact
    
—
      
—
  
 
  
(164
 )
 
  
(164
 )
Amounts reclassified from AOCI
    
—
      
(711
 )
(1)
  
6,431
  
(2)
  
5,720
  
Tax effect
    
—
      
1,011
  
 
  
19
  
 
  
1,030
  
Other comprehensive income (loss), net of tax    
(7,057
 )    
(2,942
 )
 
  
1,041
  
 
  
(8,958
 )
Balance on December 31, 2018    
(23,240
 )    
(2,866
 )
 
  
(88,299
 )
 
  
(114,405
 )
                                 
Amounts recognized into AOCI    
(1,974
 )    
(11,130
 )
 
  
(1,143
 )
 
  
(14,247
 )
Currency impact
    
—
      
—
  
 
  
(428
 )
 
  
(428
 )
Amounts reclassified from AOCI    
—
      
(250
 )
(1)
  
3,884
  
(2)
  
3,634
  
Tax effect
    
67
      
2,814
  
 
  
(1,381
 )
 
  
1,500
  
Other comprehensive income (loss), net of tax    
(1,907
 )    
(8,566
 )
 
  
932
  
 
  
(9,541
 )
Balance on December 31, 2019   $
(25,147
 )   $
(11,432
 )
 
 $
(87,367
 )
 
 $
(123,946
 )
_________________________
(
1
)
 
We reclassified natural gas contracts through cost of sales and the interest rate swaps through interest expense on the Consolidated Statements of Operations. See note 12 for additional information.
(
2
)
 
We reclassified the net pension and non-pension post-retirement benefits amortization and settlement charges through other income (expense) on the Consolidated Statements of Operations. See notes 8 and 9 for additional information.