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Retirement Plans (Tables)
 9 Months Ended
Sep. 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:
 
 
Nine Months Ended
September 30
($ in thousands)
 
2014
 
2013
Cost components:
 
 
 
 
Service cost-benefits earned during the period
 
$
(270
)
 
$
(213
)
Interest cost on projected benefit obligation
 
(303
)
 
(282
)
Expected return on plan assets
 
408

 
342

Net amortization and deferral
 
(800
)
 
(144
)
Total net periodic pension cost
 
$
(965
)
 
$
(297
)
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:
 
 
Nine Months Ended
September 30
($ in thousands)
 
2014
 
2013
Cost components:
 
 
 
 
Service cost-benefits earned during the period
 
$
(240
)
 
$
(129
)
Interest cost on projected benefit obligation
 
(165
)
 
(162
)
Net amortization and deferral
 
(171
)
 
(216
)
Total net periodic pension cost
 
$
(576
)
 
$
(507
)