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Allowance for Loan Losses (Rollforward of the Allowance for Loan Losses by Portfolio Segment) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Balance at beginning of period $ 10,150   $ 10,104 $ 12,571
Charge-offs (633) (57) (902) (1,663)
Recoveries 65 95 380 375
Provision (credit) for loan losses         (100)
Balance at end of period 9,582 11,145 9,582 11,145
Commercial [Member]
        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Balance at beginning of period 3,254   2,844 2,596
Charge-offs       (72)   
Recoveries 6 17 111 48
Provision (credit) for loan losses 35 891 412 1,044
Balance at end of period 3,295 2,780 3,295 2,780
Commercial loans secured by real estate [Member]
        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Balance at beginning of period 4,475   4,885 7,796
Charge-offs (506)    (572) (1,480)
Recoveries 24 39 196 181
Provision (credit) for loan losses (78) (993) (594) (1,468)
Balance at end of period 3,915 5,983 3,915 5,983
Real estate-mortgage [Member]
        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Balance at beginning of period 1,301   1,260 1,269
Charge-offs (103) (49) (176) (96)
Recoveries 29 31 54 98
Provision (credit) for loan losses 115 62 204 52
Balance at end of period 1,342 1,279 1,342 1,279
Consumer [Member]
        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Balance at beginning of period 145   136 150
Charge-offs (24) (8) (82) (87)
Recoveries 6 8 19 48
Provision (credit) for loan losses 24 (6) 78 29
Balance at end of period 151 146 151 146
Allocation for general risk [Member]
        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Balance at beginning of period 975   979 760
Charge-offs            
Recoveries            
Provision (credit) for loan losses (96) 46 (100) 243
Balance at end of period $ 879 $ 957 $ 879 $ 957