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Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Dec. 31, 2012
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | $ 6,049 |  | $ 6,049 |  | $ 13,228
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (2,261) |  | (2,261) |  | (4,018)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 3,788 |  | 3,788 |  | 9,210
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 1,947 |  | 1,947 |  | 1,370
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | (61) |  | (61) |  | (45)
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,886 |  | 1,886 |  | 1,325
Impaired Financing Receivable, With Related Allowance, Related Allowance | 284 |  | 284 |  | 263
Impaired Financing Receivable, Unpaid Principal Balance | 7,996 |  | 7,996 |  | 14,598
Impaired Financing Receivable, Charge-off And Payments Applied | (2,322) |  | (2,322) |  | (4,063)
Impaired Financing Receivable, Recorded Investment | 5,674 |  | 5,674 |  | 10,535
Impaired Financing Receivable, Related Allowance | 284 |  | 284 |  | 263
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Impaired Financing Receivable, Average Recorded Investment | 5,501 | 10,370 | 6,458 | 10,327 |
Impaired Financing Receivable, Interest Income, Accrual Method | 19 | 17 | 53 | 60 |
Commercial and Industrial Loans [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 136 |  | 136 |  | 169
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | 0 |  | 0 |  | 0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 136 |  | 136 |  | 169
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Impaired Financing Receivable, Average Recorded Investment | 139 | 189 | 152 | 200 |
Impaired Financing Receivable, Interest Income, Accrual Method | 2 | 3 | 7 | 11 |
Construction And Land Development Loans [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 2,879 |  | 2,879 |  | 2,879
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (1,682) |  | (1,682) |  | (1,682)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,197 |  | 1,197 |  | 1,197
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 457 |  | 457 |  | 471
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | (61) |  | (61) |  | (45)
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 396 |  | 396 |  | 426
Impaired Financing Receivable, Related Allowance | 99 |  | 99 |  | 129
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Impaired Financing Receivable, Average Recorded Investment | 1,596 | 3,801 | 1,608 | 4,357 |
Impaired Financing Receivable, Interest Income, Accrual Method | 0 | 0 | 0 | 0 |
Commercial Real Estate Owner Occupied Loans [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 1,220 |  | 1,220 |  | 787
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (180) |  | (180) |  | (212)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,040 |  | 1,040 |  | 575
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 882 |  | 882 |  | 899
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | 0 |  | 0 |  | 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 882 |  | 882 |  | 899
Impaired Financing Receivable, Related Allowance | 117 |  | 117 |  | 134
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Impaired Financing Receivable, Average Recorded Investment | 1,927 | 2,468 | 1,993 | 2,537 |
Impaired Financing Receivable, Interest Income, Accrual Method | 13 | 14 | 42 | 49 |
Commercial Real Estate Other Loans [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 516 |  | 516 |  | 7,914
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (90) |  | (90) |  | (1,862)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 426 |  | 426 |  | 6,052
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Impaired Financing Receivable, Average Recorded Investment | 832 | 2,211 | 1,581 | 1,713 |
Impaired Financing Receivable, Interest Income, Accrual Method | 4 | 0 | 4 | 0 |
Commercial Real Estate Loans, Total [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 1,736 |  | 1,736 |  | 8,701
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (270) |  | (270) |  | (2,074)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,466 |  | 1,466 |  | 6,627
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 1,490 |  | 1,490 |  | 899
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | 0 |  | 0 |  | 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,490 |  | 1,490 |  | 899
Impaired Financing Receivable, Related Allowance | 185 |  | 185 |  | 134
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Impaired Financing Receivable, Average Recorded Investment | 2,759 | 4,679 | 3,574 | 4,250 |
Impaired Financing Receivable, Interest Income, Accrual Method | 17 | 14 | 46 | 49 |
Residential Real Estate Consumer Mortgage Loans [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 958 |  | 958 |  | 971
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (186) |  | (186) |  | (152)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 772 |  | 772 |  | 819
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Impaired Financing Receivable, Average Recorded Investment | 776 | 846 | 801 | 870 |
Impaired Financing Receivable, Interest Income, Accrual Method | 0 | 0 | 0 | 0 |
Residential Real Estate Investment Property Loans [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 340 |  | 340 |  | 508
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (123) |  | (123) |  | (110)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 217 |  | 217 |  | 398
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 0 |  | 0 |  |
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | 0 |  | 0 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 0 |  | 0 |  |
Impaired Financing Receivable, Related Allowance | 0 |  | 0 |  |
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Impaired Financing Receivable, Average Recorded Investment | 231 | 855 | 323 | 650 |
Impaired Financing Receivable, Interest Income, Accrual Method | 0 | 0 | 0 | 0 |
Residential Real Estate Loans, Total [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 1,298 |  | 1,298 |  | 1,479
Impaired Financing Receivable, with No Related Allowance, Charge-off And Payments Applied | (309) |  | (309) |  | (262)
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 989 |  | 989 |  | 1,217
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 0 |  | 0 |  |
Impaired Financing Receivable, with Related Allowance, Charge-off And Payments Applied | 0 |  | 0 |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 0 |  | 0 |  |
Impaired Financing Receivable, Related Allowance | 0 |  | 0 |  |
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Impaired Financing Receivable, Average Recorded Investment | 1,007 | 1,701 | 1,124 | 1,520 |
Impaired Financing Receivable, Interest Income, Accrual Method | 0 | 0 | 0 | 0 |
Consumer Installment and Revolving Loans [Member] |  |  |  |  |
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Impaired Financing Receivable, Average Recorded Investment | 0 | 0 | 0 | 0 |
Impaired Financing Receivable, Interest Income, Accrual Method | $ 0 | $ 0 | $ 0 | $ 0 |

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