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Change in Accumulated Other Comprehensive Income (Tables)
 3 Months Ended
Mar. 31, 2013
Change in Accumulated Other Comprehensive Income [Abstract]  
Changes To Accumulated Other Comprehensive Income By Components
                       
          Three Months Ended      
          March 31, 2013      
                Change in Benefit      
    Unrealized Gains and           Obligations and Plan Assets       
    Losses on Available for Sale   Change in Fair Value of     for the Post Retirement      
    Securities     Interest Rate Swap     Benefit Plan    Total  
          (dollars in thousands)      
December 31, 2012 $ 3,824   $ (419 ) $ 43 $ 3,448  
Other comprehensive (loss)                      
income before reclassifications   (31 )   48     —   17  
Reclassifications from other                      
comprehensive (loss) income   (390 )   —     —   (390 )
Tax effect of current period                      
changes   143     (17 )   —   126  
Current period changes net of                      
taxes   (278 )   31     —   (247 )
March 31, 2013 $ 3,546   $ (388 ) $ 43 $ 3,201  

 

 

                       
          Three Months Ended      
          March 31, 2012      
                Change in Benefit      
    Unrealized Gains and           Obligations and Plan Assets       
    Losses on Available for Sale   Change in Fair Value of     for the Post Retirement      
    Securities     Interest Rate Swap     Benefit Plan    Total  
          (dollars in thousands)      
December 31, 2011 $ 3,263   $ (382 ) $ 50 $ 2,931  
Other comprehensive income                      
before reclassifications   257     19     —   276  
Reclassifications from other                      
comprehensive income   —     —     —   —  
Tax effect of current period                      
changes   (87 )   (7 )   —   (94 )
Current period changes net of                      
taxes   170     12     —   182  
March 31, 2012 $ 3,433   $ (370 ) $ 50 $ 3,113