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Mortgage Servicing Rights (Tables)
12 Months Ended
Dec. 31, 2014
Mortgage Servicing Rights [Abstract]  
Summary of mortgage servicing rights capitalized and related amortization

 

  ($ in thousands)   2014     2013  
               
  Carrying amount, beginning of year   $ 5,180     $ 3,775  
  Mortgage servicing rights capitalized during the year     1,367       1,603  
  Mortgage servicing rights amortization during the year     (612 )     (827 )
  Net change in valuation allowance     (231 )     629  
  Carrying amount, end of year   $ 5,704     $ 5,180  
                   
  Valuation allowance:                
  Beginning of year   $ 181     $ 810  
  Reduction     231       (629 )
                   
  End of year   $ 412     $ 181  
                   
  Fair Value, beginning of period   $ 6,237     $ 4,329  
  Fair Value, end of period   $ 6,358     $ 6,237