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Pension, Savings, And Other Employee Benefits (Tables)
6 Months Ended
Jun. 30, 2012
Pension, Savings, And Other Employee Benefits [Abstract]  
Schedule Of Components Of Net Periodic Benefit Cost
The components of net periodic benefit cost for the three months ended June 30 are as follows:
                
    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 

The components of net periodic benefit cost for the six months ended June 30 are as follows:
              
  Pension Benefits Other Benefits 
(Dollars in thousands) 2012 2011 2012 2011 
Components of net periodic benefit cost            
Service cost$ 8,703 $ 8,602 $ 248 $ 288 
Interest cost  16,589   16,294   1,112   1,104 
Expected return on plan assets  (19,893)   (23,446)   (461)   (596) 
Amortization of unrecognized:            
 Transition (asset)/obligation  -   -   368   492 
 Prior service cost/(credit)  199   208   (4)   (4) 
 Actuarial (gain)/loss  17,648   10,054   (306)   (520) 
Net periodic benefit cost$ 23,246 $ 11,712 $ 957 $ 764