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Pension and Postretirement Benefits Other Than Pension Plans
 6 Months Ended
Jun. 30, 2017
Compensation and Retirement Disclosure [Abstract]  
Pension and Postretirement Benefits Other Than Pension Plans

9. PENSION AND POSTRETIREMENT BENEFITS OTHER THAN PENSION PLANS:

Net periodic pension expense reflected in the accompanying condensed consolidated statements of operations included the following components for the respective periods (in thousands):

 

     Three Months Ended
June 30,		      Six Months Ended
June 30,		  
     2017      2016      2017      2016  

Interest cost

    $ 901      $ 953      $ 1,815      $ 1,930  

Expected return on plan assets

      (1,011 )       (1,006 )       (2,047 )       (2,040 ) 

Amortization of net actuarial loss

      297        322        579        614  
  

 

 

     

 

 

     

 

 

     

 

 

  

Total net periodic pension expense

    $ 187      $ 269      $ 347      $ 504  
  

 

 

     

 

 

     

 

 

     

 

 

  

Net postretirement benefit income reflected in the accompanying condensed consolidated statements of operations included the following components for the respective periods (in thousands):

 

     Three Months Ended
June 30,		      Six Months Ended
June 30,		  
     2017      2016      2017      2016  

Interest cost

    $ 28      $ 30      $ 54      $ 60  

Amortization of net actuarial loss

      66        62        123        121  

Amortization of prior service credit

      (329 )       (329 )       (657 )       (657 ) 
  

 

 

     

 

 

     

 

 

     

 

 

  

Total net postretirement benefit income

    $ (235 )     $ (237 )     $ (480 )     $ (476 )