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Comprehensive Income
9 Months Ended
Sep. 30, 2011
Comprehensive Income [Abstract] 
Comprehensive Income
13. Comprehensive Income
 
Comprehensive income includes net income and changes in the components of accumulated other comprehensive income during the periods presented.  The Company's comprehensive income is as follows (in thousands of dollars):

   
Three Months Ended
  
Nine Months Ended
 
   
September 30,
  
September 30,
 
   
2011
  
2010
  
2011
  
2010
 
              
Net earnings
 $14,425  $12,637  $45,276  $29,219 
                  
Other comprehensive income, before tax:
                
                  
Foreign currency translation adjustments
  (6,578)  4,029   (2,904)  (928)
                  
Defined benefit pension plans:
                
                 
Amortization of prior service cost included in net periodic benefit cost
  236   196   709   589 
Amortization of unrecognized net loss included in net periodic benefit cost
  979   928   2,936   2,784 
Net (loss) gain arising during period
  -   -   (3,565)  3,634 
                  
Total defined benefit pension plans
  1,215   1,124   80   7,007 
                  
Defined benefit postretirement plans:
                
                 
Amortization of prior service cost included in net periodic benefit cost
  13   13   38   38 
Amortization of unrecognized net gain included in net periodic benefit cost
  (56)  (73)  (167)  (218)
Net (loss) gain arising during period
  -   -   (245)  1,942 
                  
Total defined benefit postretirement plans
  (43)  (60)  (374)  1,762 
                  
Total other comprehensive (loss) income, before tax
  (5,406)  5,093   (3,198)  7,841 
                  
Income tax (expense) benefit related to items of other
                
comprehensive income
  (433)  (394)  109   (3,245)
                  
Total other comprehensive (loss) income, net of tax
  (5,839)  4,699   (3,089)  4,596 
                  
Total comprehensive income
 $8,586  $17,336  $42,187  $33,815 
 
Accumulated other comprehensive income (loss) in the consolidated balance sheet consists of the following (in thousands of dollars):
 
      
Defined
  
Defined
  
Accumulated
 
   
Foreign
  
Benefit
  
Benefit
  
Other
 
   
Currency
  
Pension
  
Postretirement
  
Comprehensive
 
   
Translation
  
Plans
  
Plans
  
Loss
 
              
Balance, Dec. 31, 2010
 $5,077  $(43,372) $1,649  $(36,646)
                  
Current-period change
  (2,904)  51   (236)  (3,089)
                  
Balance, September 30, 2011
 $2,173  $(43,321) $1,413  $(39,735)