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Employee Benefit Plans (Tables)
6 Months Ended
Jun. 30, 2012
Employee Benefit Plans [Abstract]  
Net Periodic Benefit Cost
    Three Months Ended     Six Months Ended  
    June 30,     June 30,  
(dollars in thousands)   2012     2011     2012     2011  
Interest cost $ 493   $ 525   $ 986   $ 1,050  
Expected return on plan assets   (587 )   (676 )   (1,173 )   (1,352 )
Recognized actuarial loss   1,007     689     2,013     1,378  
Settlement   0     391     0     604  
Net periodic benefit cost $ 913   $ 929   $ 1,826   $ 1,680