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Allowance For Loan Losses (Allowance For Loan Losses By Segment) (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Dec. 31, 2011
Financing Receivable, Impaired [Line Items] |  |  |
Beginning Balance | $ 8,743 | $ 7,111 | $ 7,111
Charge-Offs | (2,647) | (2,638) | (2,966)
Recoveries | 215 | 568 | 848
Provision | 1,650 | 2,850 | 3,750
Ending Balance | 7,961 | 7,891 | 8,743
Ending balance: Individually evaluated for impairment | 3,361 |  | 4,233
Ending balance: collectively evaluated for impairment | 4,600 |  | 4,510
Financing Receivables Ending Balance | 427,499 |  | 410,424
Ending balance individually evaluated for impairment | 17,738 |  | 19,890
Ending balance collectively evaluated for impairment | 409,761 |  | 390,534
Construction And Farmland [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Beginning Balance | 2,618 | 1,386 | 1,386
Charge-Offs | (1,303) |  | (721)
Recoveries | 3 |  | 5
Provision | 212 |  | 1,948
Ending Balance | 1,530 |  | 2,618
Ending balance: Individually evaluated for impairment | 141 |  | 1,468
Ending balance: collectively evaluated for impairment | 1,389 |  | 1,150
Financing Receivables Ending Balance | 41,170 |  | 34,969
Ending balance individually evaluated for impairment | 1,982 |  | 3,357
Ending balance collectively evaluated for impairment | 39,188 |  | 31,612
Residential Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Beginning Balance | 3,544 | 3,457 | 3,457
Charge-Offs | (508) |  | (1,203)
Recoveries | 60 |  | 298
Provision | 361 |  | 992
Ending Balance | 3,457 |  | 3,544
Ending balance: Individually evaluated for impairment | 2,005 |  | 2,071
Ending balance: collectively evaluated for impairment | 1,452 |  | 1,473
Financing Receivables Ending Balance | 219,304 |  | 217,155
Ending balance individually evaluated for impairment | 8,823 |  | 9,748
Ending balance collectively evaluated for impairment | 210,481 |  | 207,407
Commercial Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Beginning Balance | 1,057 | 1,231 | 1,231
Charge-Offs | (660) |  | (14)
Recoveries | 58 |  | 2
Provision | 1,681 |  | (162)
Ending Balance | 2,136 |  | 1,057
Ending balance: Individually evaluated for impairment | 740 |  | 150
Ending balance: collectively evaluated for impairment | 1,396 |  | 907
Financing Receivables Ending Balance | 130,272 |  | 118,043
Ending balance individually evaluated for impairment | 6,220 |  | 6,186
Ending balance collectively evaluated for impairment | 124,052 |  | 111,857
Commercial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Beginning Balance | 1,077 | 819 | 819
Charge-Offs | (50) |  | (572)
Recoveries | 30 |  | 292
Provision | (216) |  | 538
Ending Balance | 841 |  | 1,077
Ending balance: Individually evaluated for impairment | 475 |  | 544
Ending balance: collectively evaluated for impairment | 366 |  | 533
Financing Receivables Ending Balance | 20,286 |  | 22,866
Ending balance individually evaluated for impairment | 713 |  | 599
Ending balance collectively evaluated for impairment | 19,573 |  | 22,267
Consumer [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Beginning Balance | 131 | 182 | 182
Charge-Offs | (103) |  | (331)
Recoveries | 57 |  | 195
Provision | 35 |  | 85
Ending Balance | 120 |  | 131
Ending balance: collectively evaluated for impairment | 120 |  | 131
Financing Receivables Ending Balance | 13,348 |  | 13,185
Ending balance collectively evaluated for impairment | 13,348 |  | 13,185
All Other Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Beginning Balance | 123 | 36 | 36
Charge-Offs | (23) |  | (125)
Recoveries | 7 |  | 56
Provision | 6 |  | 156
Ending Balance | 113 |  | 123
Ending balance: collectively evaluated for impairment | 113 |  | 123
Financing Receivables Ending Balance | 3,119 |  | 4,206
Ending balance collectively evaluated for impairment | 3,119 |  | 4,206
Unallocated [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Beginning Balance | 193 |  |
Charge-Offs |  |  |
Recoveries |  |  |
Provision | (429) |  | 193
Ending Balance | (236) |  | 193
Ending balance: Individually evaluated for impairment |  |  |
Ending balance: collectively evaluated for impairment | (236) |  | 193
Financing Receivables Ending Balance |  |  |
Ending balance individually evaluated for impairment |  |  |
Ending balance collectively evaluated for impairment |  |  |

X
- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + Details
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- Definition Amount of direct write-downs of financing receivables charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 168, 169, 170 -IssueDate 2006-05-01 -Chapter 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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