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Pension, Savings, And Other Employee Benefits (Tables)
 3 Months Ended
Mar. 31, 2012
Pension, Savings, And Other Employee Benefits [Abstract]  
Schedule Of Components Of Net Periodic Benefit Cost
     Pension Benefits     Other Benefits  

(Dollars in thousands)

    2012     2011     2012     2011  

Components of net periodic benefit cost

         

Service cost

    $ 4,351      $ 4,301      $ 124      $ 144   

Interest cost

      8,295        8,147        556        552   

Expected return on plan assets

      (9,947 )      (11,724 )      (230 )      (297 ) 

Amortization of unrecognized:

         

Transition (asset)/obligation

      —          —          184        246   

Prior service cost/(credit)

      100        104        (2 )      (2 ) 

Actuarial (gain)/loss

      8,824        5,027        (153 )      (260 ) 
  

 

 

    

 

 

    

 

 

    

 

 

  

Net periodic benefit cost

    $ 11,623      $ 5,855      $ 479      $ 383