Employee Benefit Plans
 3 Months Ended
Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]  
Employee Benefit Plans

10. EMPLOYEE BENEFIT PLANS

 

     Pension Benefits     Other Postretirement Benefits  
     Three Months Ended
March 31,		     Three Months Ended
March 31,		  
     2015     2014     2015     2014  

Service cost

    $ 107      $ 114     $ 7      $ 24   

Interest cost

      2,938        3,335        161        225   

Recognized actuarial loss (gain)

      170        71       (283 )      (84 ) 

Amortization of prior service credits

      —          —          (2,457 )      (2,494 ) 

Expected return on plan assets

      (3,477 )      (3,814 )     —          —     
  

 

 

    

 

 

    

 

 

    

 

 

  

Net periodic benefit income

 $ (262 )  $ (294 )  $ (2,572 )  $ (2,329 ) 
  

 

 

    

 

 

    

 

 

    

 

 

  

The Company contributed $6.8 million to its pension and other postretirement benefit plans during the three months ended March 31, 2015. During the remainder of 2015, the Company anticipates making additional contributions of approximately $10.3 million to these plans.