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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
Mar. 31, 2014
Mar. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance at beginning of period $ 10,104 $ 12,571
Charge-offs (217) (1,547)
Recoveries 222 186
Provision (credit) for loan losses    (250)
Balance at end of period 10,109 10,960
Commercial [Member]
    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance at beginning of period 2,844 2,596
Charge-offs (72)   
Recoveries 50 11
Provision (credit) for loan losses 243 60
Balance at end of period 3,065 2,667
Commercial loans secured by real estate [Member]
    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance at beginning of period 4,885 7,796
Charge-offs (66) (1,480)
Recoveries 153 108
Provision (credit) for loan losses (310) (435)
Balance at end of period 4,662 5,989
Real estate-mortgage [Member]
    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance at beginning of period 1,260 1,269
Charge-offs (43) (29)
Recoveries 14 55
Provision (credit) for loan losses 42 (28)
Balance at end of period 1,273 1,267
Consumer [Member]
    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance at beginning of period 136 150
Charge-offs (36) (38)
Recoveries 5 12
Provision (credit) for loan losses 34 23
Balance at end of period 139 147
Allocation for general risk [Member]
    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance at beginning of period 979 760
Charge-offs      
Recoveries      
Provision (credit) for loan losses (9) 130
Balance at end of period $ 970 $ 890