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Stock-Based Compensation Plan (Tables)
9 Months Ended
Sep. 30, 2012
Stock-Based Compensation Plan [Abstract]  
Restricted Stock Activity
  Nine Months Ended September 30,
  2012 2011
      Weighted     Weighted
      Average     Average
      Grant Date     Grant Date
  Shares   Fair Value Shares   Fair Value
Nonvested, beginning of period 13,700   $ 16.11 12,772   $ 16.89
Granted 14,500     17.87 12,300     16.76
Vested (7,363 )   16.10 (5,691 )   17.26
Forfeited (737 )   16.25 (2,081 )   18.38
Nonvested, end of period 20,100   $ 17.37 17,300   $ 16.50