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Allowance for Loan Losses (Rollforward of the Allowance for Loan Losses by Portfolio Segment) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Balance at beginning of period $ 9,689 $ 10,109 $ 9,623 $ 10,104
Charge-offs (219) (52) (490) (269)
Recoveries 47 $ 93 134 $ 315
Provision (Credit) 200   450  
Balance at end of period 9,717 $ 10,150 9,717 $ 10,150
Commercial [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Balance at beginning of period $ 3,157 $ 3,065 3,262 2,844
Charge-offs     (121) (72)
Recoveries $ 8 $ 55 14 105
Provision (Credit) 6 134 16 377
Balance at end of period 3,171 3,254 3,171 3,254
Commercial loans secured by real estate [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Balance at beginning of period 4,087 $ 4,662 3,902 4,885
Charge-offs (15)   (15) (66)
Recoveries 9 $ 19 51 172
Provision (Credit) 59 (206) 202 (516)
Balance at end of period 4,140 4,475 4,140 4,475
Real estate-mortgage [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Balance at beginning of period 1,304 1,273 1,310 1,260
Charge-offs (188) (30) (291) (73)
Recoveries 25 11 55 25
Provision (Credit) 180 47 247 89
Balance at end of period 1,321 1,301 1,321 1,301
Consumer [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Balance at beginning of period 191 139 190 136
Charge-offs (16) (22) (63) (58)
Recoveries 5 8 14 13
Provision (Credit) 21 20 60 54
Balance at end of period 201 145 201 145
Allocation for general risk [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Balance at beginning of period $ 950 $ 970 $ 959 $ 979
Charge-offs        
Recoveries        
Provision (Credit) $ (66) $ 5 $ (75) $ (4)
Balance at end of period $ 884 $ 975 $ 884 $ 975