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Commitments and Credit Risk (Tables)
12 Months Ended
Dec. 31, 2012
Commitments and Credit Risk [Abstract]  
Summary of line of credit facilities
 
($ in thousands)
 
2012
   
2011
 
Loan commitments and unused lines of credit
  $ 81,399     $ 75,272  
Standby letters of credit
    5,698       5,587  
Total
  $ 87,097     $ 80,859