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Post-Retirement Obligations (Tables)
 3 Months Ended
Mar. 31, 2018
Compensation And Retirement Disclosure [Abstract]  
Changes in Accumulated Liability

The following table presents the changes in the accumulated liability:

 

 

(Amounts in thousands)

 

 

Three Months Ended

 

 

March 31,

 

 

2018

 

 

2017

 

Beginning balance

$

876

 

 

$

840

 

Expense recorded

 

6

 

 

 

13

 

Other comprehensive income (loss) recorded

 

8

 

 

 

5

 

Ending balance

$

890

 

 

$

858