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Retirement Plans (Tables)
 6 Months Ended
Jun. 30, 2014
Pension plan
  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Components of net periodic pension cost
The expected total pension and retirement expense for the Benefit Plan was as follows:
 
 
Six Months Ended
June 30
($ in thousands)
 
2014
 
2013
Cost components:
 
 
 
 
Service cost-benefits earned during the period
 
$
(180
)
 
$
(142
)
Interest cost on projected benefit obligation
 
(202
)
 
(188
)
Expected return on plan assets
 
272

 
228

Net amortization and deferral
 
(533
)
 
(96
)
Total net periodic pension cost
 
$
(643
)
 
$
(198
)
SERP
  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Components of net periodic pension cost
The pension and retirement expense for the SERP was as follows:
 
 
Six Months Ended
June 30
($ in thousands)
 
2014
 
2013
Cost components:
 
 
 
 
Service cost-benefits earned during the period
 
$
(160
)
 
$
(86
)
Interest cost on projected benefit obligation
 
(110
)
 
(108
)
Net amortization and deferral
 
(114
)
 
(144
)
Total net periodic pension cost
 
$
(384
)
 
$
(338
)