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Stock and Incentive Compensation Plans (Tables)
6 Months Ended
Jun. 30, 2011
Stock and Incentive Compensation Plans [Abstract]  
Compensation expense for stock and incentive plans
The following table presents information regarding compensation expense for stock and incentive plans for the periods presented ($ in thousands):

   
Three months ended June 30,
  
Six months ended June 30,
 
   
2011
  
2010
  
2011
  
2010
 
Compensation expense - Stock and Incentive plans:
            
Stock option-based awards
 $32  $114  $100  $277 
Performance awards
  218   250   441   502 
Time-vested awards
  754   864   1,501   1,742 
RSU award (share price: $23.65-2011, $20.82-2010)
  47   166   184   324 
Total
 $1,051  $1,394  $2,226  $2,845