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Summary of Significant Accounting Plicies and Nature of Operations (Tables)
 12 Months Ended
Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Accumulated balances related to each component of other comprehensive loss
The accumulated balances related to each component of other comprehensive loss are as follows: 
(dollars in thousands)
 
December 31, 2012
 
December 31, 2011
 
 
Pretax
 
After-tax
 
Pretax
 
After-tax
Net unrealized securities gains/(losses)
 
$
6,032

 
$
3,650

 
$
470

 
$
284

Pension, other postretirement and postemployment benefit plan adjustments
 
(6,566
)
 
(3,973
)
 
(7,027
)
 
(4,253
)
Accumulated other comprehensive loss
 
$
(534
)
 
$
(323
)
 
$
(6,557
)
 
$
(3,969
)