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Benefit Plans
3 Months Ended
Mar. 31, 2013
Benefit Plans [Abstract]  
Benefit Plans
10. Benefit Plans

The Company has noncontributory salaried and hourly pension plans (collectively, "Pension Plans") covering substantially all of its employees.  These plans were frozen to new participants effective December 31, 2008. Information related to the Pension Plans is as follows:

   
Three months ended March 31,
 
Components of net periodic pension expense:
 
2013
  
2012
 
Interest cost
 $606  $613 
Expected return on plan assets
  (630)  (599)
Amortization of net loss
  277   227 
Net periodic pension expense
 $253  $241