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Pension, Savings, And Other Employee Benefits (Tables)
9 Months Ended
Sep. 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 September 30 are as follows:
                
    Pension Benefits Other Benefits 
    Three months ended Three months ended 
    September 30 September 30 
(Dollars in thousands)  2012 2011 2012 2011 
Components of net periodic benefit cost            
Service cost$ 2,453 $ 2,917 $ 102 $ 119 
Interest cost  8,191   8,323   612   556 
Expected return on plan assets  (9,967)   (11,717)   (225)   (296) 
Amortization of unrecognized:            
 Transition (asset)/obligation  -   -   184   246 
 Prior service cost/(credit)  100   104   (3)   (2) 
 Actuarial (gain)/loss  9,351   5,861   (60)   (273) 
Net periodic benefit cost  10,128   5,488   610   350 
ASC 715 settlement expense  1,231   -   -   - 
Total periodic benefit costs$ 11,359 $ 5,488 $ 610 $ 350 

The components of net periodic benefit cost for the nine months ended September 30 are as follows:
              
  Pension Benefits Other Benefits 
  Nine months ended Nine months ended 
  September September 
(Dollars in thousands) 2012 2011 2012 2011 
Components of net periodic benefit cost            
Service cost$ 11,156 $ 11,519 $ 350 $ 407 
Interest cost  24,780   24,617   1,724   1,660 
Expected return on plan assets  (29,860)   (35,164)   (686)   (892) 
Amortization of unrecognized:            
 Transition (asset)/obligation  -   -   552   740 
 Prior service cost/(credit)  299   313   (7)   (7) 
 Actuarial (gain)/loss  26,999   15,914   (366)   (793) 
Net periodic benefit cost  33,374   17,199   1,567   1,115 
ASC 715 settlement expense  1,231   -   -   - 
Total periodic benefit costs$ 34,605 $ 17,199 $ 1,567 $ 1,115