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Retirement Benefit Plans (Tables)
3 Months Ended
Mar. 31, 2014
Retirement Benefit Plans [Abstract]  
Summary Of Net Periodic Benefit Costs
  Supplemental Executive  
    Retirement Plans  
 
Three Months Ended March 31,   2014   2013  
 
Service cost $ 16 $ 91  
Interest cost   37   30  
Net amortization of prior service cost and actuarial (gain)/loss --   (82 )
Actuarial loss on supplemental executive retirement plan, net of tax   7   15  
Net periodic benefit cost $ 60 $ 54