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Pension Information
9 Months Ended
Sep. 30, 2011
Pension Information [Abstract] 
Pension Information
(7) Pension Information
Net periodic pension expense was as follows:
                                 
    Three months ended     Nine months ended  
    September 30     September 30  
    2011     2010     2011     2010  
Service cost
  $ 212     $ 210     $ 635     $ 630  
Interest cost
    203       190       611       570  
Expected return on plan assets
    (206 )     (151 )     (620 )     (453 )
Other components
    85       65       257       194  
 
                       
Net periodic pension cost
  $ 294     $ 314     $ 883     $ 941  
 
                       
The total amount of contributions expected to be paid by the Corporation in 2011 total $1,152, compared to $2,016 in 2010.