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Other Comprehensive Loss
 3 Months Ended
Mar. 31, 2017
Equity [Abstract]  
Other Comprehensive Loss
Other Comprehensive Loss
The after-tax changes in accumulated other comprehensive loss are as follows: 
 
Foreign
currency translation adjustment
 
Pension and
post-retirement
benefits plans
 
Accumulated other
comprehensive
loss
Ending balance, December 31, 2016
$
(24,313
)
 
$
(24,532
)
 
$
(48,845
)
Net current period change
1,822

 
—

 
1,822

Reclassification adjustments for losses reclassified into income
—

 
(740
)
 
(740
)
Ending balance, March 31, 2017
$
(22,491
)
 
$
(25,272
)
 
$
(47,763
)

 
Foreign
currency translation adjustment
 
Pension and
post-retirement
benefit plans
 
Accumulated other
comprehensive
loss
Ending balance, December 31, 2015
$
(21,079
)
 
$
(18,575
)
 
$
(39,654
)
Net current period change
289

 
—

 
289

Reclassification adjustments for losses reclassified into income
—

 
109

 
109

Ending balance, March 31, 2016
$
(20,790
)
 
$
(18,466
)
 
$
(39,256
)

The related tax effects allocated to each component of other comprehensive income are as follows:
    
 
Three Months Ended
 
March 31, 2017
 
Before Tax
Amount
 
Tax Expense
 
After Tax Amount
Retirement benefits adjustment
$
(957
)
 
$
217

 
$
(740
)
Cumulative translation adjustment
1,822

 
—

 
1,822

Total other comprehensive income
$
865

 
$
217

 
$
1,082


 
Three Months Ended
 
March 31, 2016
 
Before Tax
Amount
 
Tax Expense
 
After Tax 
Amount
Retirement benefits adjustment
$
143

 
$
(34
)
 
$
109

Cumulative translation adjustment
305

 
—

 
305

Total other comprehensive loss
$
448

 
$
(34
)
 
$
414