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Retirement Plans (Table)
3 Months Ended
Mar. 31, 2014
Compensation and Retirement Disclosure [Abstract]  
Schedule of Components Of Net Periodic Benefit Cost And Other Amounts Recognized In Other Comprehensive Income
 
 
Retirement Income Plan
Quarter ended March 31,
 
Retirement Life Plan
Quarter ended March 31,
($ in thousands)
 
2014
 
2013
 
2014
 
2013
Components of Net Periodic Benefit Cost:
 
 

 
 

 
 

 
 

 
 
 
 
 
 
 
 
 
Net Periodic Benefit Cost:
 
 
 
 
 
 
 
 
Service cost
 
$
1,627

 
2,449

 

 

Interest cost
 
3,254

 
3,303

 
73

 
70

Expected return on plan assets
 
(3,919
)
 
(3,848
)
 

 

Amortization of unrecognized prior service cost
 

 
10

 

 

Amortization of unrecognized net actuarial loss
 
367

 
1,822

 
13

 
18

Curtailment expense
 

 
16

 

 

Total net periodic cost
 
$
1,329

 
3,752

 
86

 
88

Schedule Of Weighted-Average Expense Assumptions
 
 
Retirement Income Plan
Quarter ended March 31,
 
Retirement Life Plan
Quarter ended March 31,
 
 
2014
 
2013
 
2014
 
2013
Weighted-Average Expense Assumptions:
 
 
 
 
 
 
 
 
Discount rate
 
5.16
%
 
4.42
 
4.85
%
 
4.42
Expected return on plan assets
 
6.92

 
7.40
 

 
Rate of compensation increase
 
4.00

 
4.00