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Allowance For Loan Losses (Impaired Loans By Class) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2012 | Sep. 30, 2012 | Dec. 31, 2011
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | $ 17,738 | $ 17,738 | $ 19,890
Recorded Investment | 17,779 | 17,779 | 19,955
Related Allowance | 3,361 | 3,361 | 4,233
Average Recorded Investment | 19,700 | 20,065 | 20,871
Interest Income Recognized | 210 | 605 | 846
Commercial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 713 | 713 | 599
Recorded Investment | 718 | 718 | 605
Related Allowance | 475 | 475 | 544
Average Recorded Investment |  | 744 | 604
Interest Income Recognized |  | 31 | 26
Commercial Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 6,220 | 6,220 | 6,185
Recorded Investment | 6,234 | 6,234 | 6,220
Related Allowance | 740 | 740 | 150
Average Recorded Investment |  | 7,343 | 6,326
Interest Income Recognized |  | 249 | 306
Construction And Farmland [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 1,982 | 1,982 | 3,358
Recorded Investment | 1,985 | 1,985 | 3,367
Related Allowance | 141 | 141 | 1,468
Average Recorded Investment |  | 2,650 | 3,478
Interest Income Recognized |  | 45 | 168
Residential [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 8,823 | 8,823 | 9,748
Recorded Investment | 8,842 | 8,842 | 9,763
Related Allowance | 2,005 | 2,005 | 2,071
Average Recorded Investment |  | 9,328 | 10,463
Interest Income Recognized |  | 280 | 346
All Other Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance |  |  |
Recorded Investment |  |  |
Related Allowance |  |  |
Average Recorded Investment |  |  |
Interest Income Recognized |  |  |
With No Related Allowance [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 10,021 | 10,021 | 8,853
Recorded Investment | 10,043 | 10,043 | 8,881
Average Recorded Investment |  | 12,139 | 9,696
Interest Income Recognized |  | 358 | 360
With No Related Allowance [Member] | Commercial - Non Real Estate Commercial And Industrial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance |  |  | 5
Recorded Investment |  |  | 5
Related Allowance |  |  |
Average Recorded Investment |  |  | 2
Interest Income Recognized |  |  |
With No Related Allowance [Member] | Commercial Real Estate Owner Occupied [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 2,129 | 2,129 | 2,521
Recorded Investment | 2,134 | 2,134 | 2,529
Average Recorded Investment |  | 3,224 | 2,575
Interest Income Recognized |  | 110 | 132
With No Related Allowance [Member] | Commercial Real Estate Non-Owner Occupied [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 2,121 | 2,121 | 2,552
Recorded Investment | 2,127 | 2,127 | 2,567
Average Recorded Investment |  | 2,139 | 2,623
Interest Income Recognized |  | 102 | 110
With No Related Allowance [Member] | Construction And Farmland Residential [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance |  |  |
Recorded Investment |  |  |
Related Allowance |  |  |
Average Recorded Investment |  |  |
Interest Income Recognized |  |  |
With No Related Allowance [Member] | Construction And Farmland Commercial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 1,757 | 1,757 | 361
Recorded Investment | 1,759 | 1,759 | 361
Average Recorded Investment |  | 2,423 | 466
Interest Income Recognized |  | 38 | 21
With No Related Allowance [Member] | Residential Equity Lines [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 167 | 167 | 177
Recorded Investment | 167 | 167 | 177
Average Recorded Investment |  | 189 | 190
With No Related Allowance [Member] | Residential Single Family [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 3,847 | 3,847 | 3,237
Recorded Investment | 3,856 | 3,856 | 3,242
Average Recorded Investment |  | 4,164 | 3,840
Interest Income Recognized |  | 108 | 97
With No Related Allowance [Member] | Residential Multifamily [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance |  |  |
Recorded Investment |  |  |
Related Allowance |  |  |
Average Recorded Investment |  |  |
Interest Income Recognized |  |  |
With No Related Allowance [Member] | All Other Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance |  |  |
Recorded Investment |  |  |
Related Allowance |  |  |
Average Recorded Investment |  |  |
Interest Income Recognized |  |  |
With An Allowance Recorded [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 7,717 | 7,717 | 11,037
Recorded Investment | 7,736 | 7,736 | 11,074
Related Allowance | 3,361 | 3,361 | 4,233
Average Recorded Investment |  | 7,926 | 11,175
Interest Income Recognized |  | 247 | 486
With An Allowance Recorded [Member] | Commercial - Non Real Estate Commercial And Industrial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 713 | 713 | 594
Recorded Investment | 718 | 718 | 600
Related Allowance | 475 | 475 | 544
Average Recorded Investment |  | 744 | 602
Interest Income Recognized |  | 31 | 26
With An Allowance Recorded [Member] | Commercial Real Estate Owner Occupied [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance |  |  |
Recorded Investment |  |  |
Related Allowance |  |  |
Average Recorded Investment |  |  |
Interest Income Recognized |  |  |
With An Allowance Recorded [Member] | Commercial Real Estate Non-Owner Occupied [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 1,970 | 1,970 | 1,112
Recorded Investment | 1,973 | 1,973 | 1,124
Related Allowance | 740 | 740 | 150
Average Recorded Investment |  | 1,980 | 1,128
Interest Income Recognized |  | 37 | 64
With An Allowance Recorded [Member] | Construction And Farmland Residential [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance |  |  |
Recorded Investment |  |  |
Related Allowance |  |  |
Average Recorded Investment |  |  |
Interest Income Recognized |  |  |
With An Allowance Recorded [Member] | Construction And Farmland Commercial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 225 | 225 | 2,997
Recorded Investment | 226 | 226 | 3,006
Related Allowance | 141 | 141 | 1,468
Average Recorded Investment |  | 227 | 3,012
Interest Income Recognized |  | 7 | 147
With An Allowance Recorded [Member] | Residential Equity Lines [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 615 | 615 | 402
Recorded Investment | 617 | 617 | 404
Related Allowance | 344 | 344 | 325
Average Recorded Investment |  | 621 | 404
Interest Income Recognized |  | 8 | 13
With An Allowance Recorded [Member] | Residential Single Family [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 4,194 | 4,194 | 5,932
Recorded Investment | 4,202 | 4,202 | 5,940
Related Allowance | 1,661 | 1,661 | 1,746
Average Recorded Investment |  | 4,354 | 6,029
Interest Income Recognized |  | 164 | 236
With An Allowance Recorded [Member] | Residential Multifamily [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance |  |  |
Recorded Investment |  |  |
Related Allowance |  |  |
Average Recorded Investment |  |  |
Interest Income Recognized |  |  |
With An Allowance Recorded [Member] | All Other Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance |  |  |
Recorded Investment |  |  |
Related Allowance |  |  |
Average Recorded Investment |  |  |
Interest Income Recognized |  |  |

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