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Retirement Plans (Tables)
 3 Months Ended
Mar. 31, 2013
Components of Periodic Benefit Costs for Defined-Benefit Pension, Postretirement Healthcare and Supplemental Retirement Plan

The components of periodic benefit costs for the defined-benefit pension, postretirement healthcare and supplemental retirement plans were as follows for the three-month periods ended March 31, 2013, and 2012 (in thousands):

 

            Defined-Benefit
Pension Plan
Three-Month Period
Ended March 31,		    

Postretirement Healthcare
Plan

Three-Month Period
Ended March 31,

      Supplemental
Retirement Plan
Three-Month Period
Ended March 31,		  
            2013     2012     2013      2012      2013      2012  

Service cost

       $ 254      $ 215      $ 9       $ 8       $ 12       $ 7   

Interest cost

         470        476        15         18         39         40   

Expected return on plan assets

         (559 )      (509 )      —           —           —            —     

Amortization of net actuarial loss

      {a}         564        473        2         6         57         48   
     

 

 

    

 

 

    

 

 

     

 

 

     

 

 

     

 

 

  

Net periodic benefit cost

       $ 729      $ 655      $ 26       $ 32       $ 108       $ 95   
     

 

 

    

 

 

    

 

 

     

 

 

     

 

 

     

 

 

  

 

{a} The total amount of amortization of net actuarial loss for all retirement plans was $623 and $527 for the three-month periods ended March 31, 2013, and 2012, respectively.