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Pension Plans (Tables)
9 Months Ended
Sep. 30, 2012
Pension Plans [Abstract]  
Components of net periodic benefit cost

The Company uses a December 31 measurement date for this plan. Net periodic benefit cost for this plan included the following components:

 

                                 
    Three month period ended September 30     Nine month period ended September 30  
    2012     2011     2012     2011  

Service cost

  $ 325     $ 251     $ 975     $ 753  

Interest cost

    353       343       1,058       1,029  

Expected return on plan assets

    (297     (273     (890     (817

Recognized net actuarial loss

    187       103       562       309  
   

 

 

   

 

 

   

 

 

   

 

 

 

Net periodic benefit cost

  $ 568     $ 424     $ 1,705     $ 1,274