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Allowance For Loan Losses (Allowance For Loan Losses By Segment) (Details) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Financing Receivable, Impaired [Line Items]      
Beginning Balance $ 8,743 $ 7,111 $ 7,111
Charge-Offs (846) (1,529) (2,966)
Recoveries 131 452 848
Provision 600 1,800 3,750
Ending Balance 8,628 7,834 8,743
Ending balance: Individually evaluated for impairment 3,553   4,233
Ending balance: collectively evaluated for impairment 5,075   4,510
Financing Receivables Ending Balance 428,505   410,424
Ending balance individually evaluated for impairment 17,909   19,890
Ending balance collectively evaluated for impairment 410,596   390,534
Construction And Farmland [Member]
      
Financing Receivable, Impaired [Line Items]      
Beginning Balance 2,618 1,386 1,386
Charge-Offs     (721)
Recoveries 1   5
Provision 56   1,948
Ending Balance 2,675   2,618
Ending balance: Individually evaluated for impairment 1,430   1,468
Ending balance: collectively evaluated for impairment 1,245   1,150
Financing Receivables Ending Balance 40,077   34,969
Ending balance individually evaluated for impairment 3,347   3,357
Ending balance collectively evaluated for impairment 36,730   31,612
Residential Real Estate [Member]
      
Financing Receivable, Impaired [Line Items]      
Beginning Balance 3,544 3,457 3,457
Charge-Offs (436)   (1,203)
Recoveries 57   298
Provision (152)   992
Ending Balance 3,013   3,544
Ending balance: Individually evaluated for impairment 1,582   2,071
Ending balance: collectively evaluated for impairment 1,431   1,473
Financing Receivables Ending Balance 219,624   217,155
Ending balance individually evaluated for impairment 8,278   9,748
Ending balance collectively evaluated for impairment 211,346   207,407
Commercial Real Estate [Member]
      
Financing Receivable, Impaired [Line Items]      
Beginning Balance 1,057 1,231 1,231
Charge-Offs (278)   (14)
Recoveries 1   2
Provision 738   (162)
Ending Balance 1,518   1,057
Ending balance: Individually evaluated for impairment 294   150
Ending balance: collectively evaluated for impairment 1,224   907
Financing Receivables Ending Balance 130,237   118,043
Ending balance individually evaluated for impairment 6,037   6,186
Ending balance collectively evaluated for impairment 124,200   111,857
Commercial [Member]
      
Financing Receivable, Impaired [Line Items]      
Beginning Balance 1,077 819 819
Charge-Offs (46)   (572)
Recoveries 25   292
Provision (279)   538
Ending Balance 777   1,077
Ending balance: Individually evaluated for impairment 247   544
Ending balance: collectively evaluated for impairment 530   533
Financing Receivables Ending Balance 22,331   22,866
Ending balance individually evaluated for impairment 247   599
Ending balance collectively evaluated for impairment 22,084   22,267
Consumer [Member]
      
Financing Receivable, Impaired [Line Items]      
Beginning Balance 131 182 182
Charge-Offs (76)   (331)
Recoveries 42   195
Provision 23   85
Ending Balance 120   131
Ending balance: collectively evaluated for impairment 120   131
Financing Receivables Ending Balance 13,011   13,185
Ending balance collectively evaluated for impairment 13,011   13,185
All Other Loans [Member]
      
Financing Receivable, Impaired [Line Items]      
Beginning Balance 123 36 36
Charge-Offs (10)   (125)
Recoveries 5   56
Provision (11)   156
Ending Balance 107   123
Ending balance: collectively evaluated for impairment 107   123
Financing Receivables Ending Balance 3,225   4,206
Ending balance collectively evaluated for impairment 3,225   4,206
Unallocated [Member]
      
Financing Receivable, Impaired [Line Items]      
Beginning Balance 193      
Charge-Offs       
Recoveries       
Provision 225   193
Ending Balance 418   193
Ending balance: Individually evaluated for impairment       
Ending balance: collectively evaluated for impairment 418   193
Financing Receivables Ending Balance       
Ending balance individually evaluated for impairment       
Ending balance collectively evaluated for impairment