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Other Comprehensive Income (Tables)
 12 Months Ended
Dec. 31, 2016
Other Comprehensive Income [Abstract]  
Schedule of Changes in Other Comprehensive income
The Company’s changes in other comprehensive income for the years ended December 31, 2016, 2015 and 2014 were as follows (in thousands):

  
2016
  
2015
  
2014
 
  
Gross
Amount
  
Income
Tax
(Provision)
Benefit
  
Net
Amount
  
Gross
Amount
  
Income
Tax
(Provision)
Benefit
  
Net
Amount
  
Gross
Amount
  
Income
Tax
(Provision)
Benefit
  
Net
Amount
 
Pension and postretirement benefits (a):
                           
Amortization of net actuarial loss
 
$
4,763
  
$
(1,825
)
 
$
2,938
  
$
6,963
  
$
(2,667
)
 
$
4,296
  
$
68
  
$
(26
)
 
$
42
 
Actuarial gains (losses)
  
(15,013
)
  
5,754
   
(9,259
)
  
19,482
   
(7,456
)
  
12,026
   
(71,843
)
  
27,507
   
(44,336
)
                                     
Foreign currency translation adjustments
  
—
   
—
   
—
   
29
   
—
   
29
   
(35
)
  
—
   
(35
)
                                     
Change in fair value of derivative instruments (b):
                                    
Unrealized gains (losses)
  
—
   
—
   
—
   
—
   
—
   
—
   
24
   
(9
)
  
15
 
Reclassified to net earnings
  
—
   
—
   
—
   
—
   
—
   
—
   
121
   
(51
)
  
70
 
Total
 
$
(10,250
)
 
$
3,929
  
$
(6,321
)
 
$
26,474
  
$
(10,123
)
 
$
16,351
  
$
(71,665
)
 
$
27,421
  
$
(44,244
)

(a)
Actuarial gains (losses) are amortized into costs of sales and operating expenses or selling, general and administrative expenses as appropriate. (See Note 9 – Retirement Plans)

(b)
Reclassifications to net earnings of derivatives qualifying as effective hedges are recognized in costs of sales and operating expenses.