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Retirement and Postretirement Benefits Other than Pension Plans
6 Months Ended
Jun. 30, 2011
Retirement and Postretirement Benefits Other than Pension Plans [Abstract]  
RETIREMENT AND POSTRETIREMENT BENEFITS OTHER THAN PENSION PLANS
12. RETIREMENT 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     Six months ended  
    June 30,     June 30,  
    2011     2010     2011     2010  
Interest cost
  $ 1,209     $ 1,188     $ 2,417     $ 2,376  
Expected return on plan assets
    (1,334 )     (1,197 )     (2,667 )     (2,394 )
Amortization of net actuarial loss
    619       519       1,238       1,038  
 
                       
Total net periodic pension expense
  $ 494     $ 510     $ 988     $ 1,020  
 
                       
Net postretirement benefit expense reflected in the accompanying condensed consolidated statements of operations included the following components for the respective periods (in thousands):
                                 
    Three months ended     Six months ended  
    June 30,     June 30,  
    2011     2010     2011     2010  
Service cost
  $ 15     $ 17     $ 29     $ 34  
Interest cost
    257       243       515       487  
Amortization of net gain
          (3 )           (6 )
Amortization of curtailment gain
    (61 )     (61 )     (122 )     (122 )
 
                       
Total net postretirement benefit expense
  $ 211     $ 196     $ 422     $ 393