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Derivative Instruments and Hedging Activities (Tables)
9 Months Ended
Sep. 30, 2012
Derivative Instruments and Hedging Activities [Abstract]  
Effect of derivative financial instruments on statement of earnings
The table below presents the effect of the Company's derivative financial instruments on the statement of earnings for the nine months ended September 30, 2012 and 2011.

 
(Dollars in thousands)
        
                      
                      
   
Amount of Gain
 
Location of Gain
  
Amount of Gain
   
(Loss) Recognized in
 
(Loss) Reclassified
  
(Loss) Reclassified
   
Accumulated OCI on
 
from Accumulated
  
from Accumulated
   
Derivatives
 
OCI into Income
  
OCI into Income
   
Nine months ended
     
Nine months ended
   
September 30,
     
September 30,
   
2012
   
2011
     
2012
 
2011
Interest rate derivative contracts
$
-       
 
 $
   (20)      
 
Interest income
  $
-       
 
$
628