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Shareholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2013
Shareholders' Equity  
Summary of shares granted and vested under the terms of the entity's 2009 Plan
 
   2013   2012   2011  
 
   Number
of
Shares		   Weighted
Average
Grant Date
Fair Value		   Number
of
Shares		   Weighted
Average
Grant Date
Fair Value		   Number
of
Shares		   Weighted
Average
Grant Date
Fair Value		  

Unvested shares, beginning of year

     76,104   $ 23.71     64,270   $ 22.37     44,320   $ 26.55  

Shares granted

     58,350     24.12     93,058     23.72     50,850     22.93  

Shared forfeited

     (450 )   24.24     (820 )   23.66     —     —  

Shares vested

     (48,553 )   24.37     (80,404 )   23.66     (30,900 )   23.47  
                                 
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Unvested shares, end of year

     85,451     23.66     76,104     23.71     64,270     22.37  
                                 
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