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Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Dec. 31, 2018
Accumulated Other Comprehensive Loss [Abstract]  
Components of Accumulated Other Comprehensive Loss
The after-tax components comprising accumulated other comprehensive loss is summarized below:

 
December 31
 
 
2018
 
2017
 
Foreign currency translation adjustment
 
$
(30,656
)
 
$
(21,140
)
Unrecognized pension and post-retirement benefit cost, net of tax
  of $2,230 and $2,192, respectively
  
(3,227
)
  
(3,103
)
Accumulated other comprehensive loss
 
$
(33,883
)
 
$
(24,243
)