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Mortgage Servicing Rights, Net(Tables)
12 Months Ended
Dec. 31, 2012
Mortgage Servicing  
Schedule Of Servicing Assets At Fair Value Text Block
     Year ended December 31
(Dollars in thousands)    2012  2011  2010
Beginning balance   $1,245  1,189  834
Additions, net    966  415  524
Amortization expense    (416)  (242)  (169)
Change in valuation allowance    (269)  (117)  
Ending balance   $1,526  1,245  1,189
            
Valuation allowance included in MSRs, net:           
Beginning of period   $117    
End of period    386  117  
            
Fair value of amortized MSRs:           
Beginning of period   $1,245  1,335  978
End of period    1,526  1,245  1,335

    December 31
(Dollars in thousands)  2012  2011
Unpaid principal balance $283,306  196,069
Weighted average prepayment speed (CPR)  23.7% 17.8
Discount rate (annual percentage)  11.0% 11.0
Weighted average coupon interest rate  3.9% 4.4
Weighted average remaining maturity (months)  275  276
Weighted average servicing fee (basis points)  25.0  25.0
Estimated Amortization Expense Of M S Rs For Five Years [Table Text Block]
     
(Dollars in thousands)December 31, 2012
2013  $425
2014   311
2015   226
2016   154
2017   109