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Loans (Details 2) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012 | Mar. 31, 2012 | Dec. 31, 2011
--- | --- | --- | --- | ---
Ending allowance balance attributable to loans: |  |  |  |
Allowance for loan losses, Individually evaluated for impairment | $ 720 | $ 753 |  |
Allowance for loan losses, Collectively evaluated for impairment | 12,541 | 12,208 |  |
Allowance for loan losses, Modified in a troubled debt restructuring | 636 | 1,099 |  |
Total ending allowance balance | 13,897 | 14,060 | 13,015 | 12,615
Loans: |  |  |  |
Loans individually evaluated for impairment | 13,186 | 13,899 |  |
Loans collectively evaluated for impairment | 909,628 | 902,304 |  |
Loans modified in a troubled debt restructuring | 9,882 | 11,621 |  |
Total ending loans balance | 932,696 | 927,824 |  |
Commercial, Industrial, and Agricultural [Member] |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Allowance for loan losses, Individually evaluated for impairment | 541 | 541 |  |
Allowance for loan losses, Collectively evaluated for impairment | 4,730 | 4,399 |  |
Allowance for loan losses, Modified in a troubled debt restructuring | 0 | 0 |  |
Total ending allowance balance | 5,271 | 4,940 | 4,942 | 4,511
Loans: |  |  |  |
Loans individually evaluated for impairment | 2,307 | 2,623 |  |
Loans collectively evaluated for impairment | 255,662 | 253,048 |  |
Loans modified in a troubled debt restructuring | 1,386 | 1,420 |  |
Total ending loans balance | 259,355 | 257,091 |  |
Commercial Mortgages [Member] |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Allowance for loan losses, Individually evaluated for impairment | 151 | 131 |  |
Allowance for loan losses, Collectively evaluated for impairment | 3,512 | 3,467 |  |
Allowance for loan losses, Modified in a troubled debt restructuring | 636 | 1,099 |  |
Total ending allowance balance | 4,299 | 4,697 | 4,377 | 4,470
Loans: |  |  |  |
Loans individually evaluated for impairment | 10,678 | 10,683 |  |
Loans collectively evaluated for impairment | 246,847 | 240,907 |  |
Loans modified in a troubled debt restructuring | 8,496 | 10,201 |  |
Total ending loans balance | 266,021 | 261,791 |  |
Residential Real Estate [Member] |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Allowance for loan losses, Individually evaluated for impairment | 28 | 81 |  |
Allowance for loan losses, Collectively evaluated for impairment | 2,367 | 2,385 |  |
Allowance for loan losses, Modified in a troubled debt restructuring | 0 | 0 |  |
Total ending allowance balance | 2,395 | 2,466 | 1,997 | 1,991
Loans: |  |  |  |
Loans individually evaluated for impairment | 201 | 593 |  |
Loans collectively evaluated for impairment | 346,996 | 347,311 |  |
Loans modified in a troubled debt restructuring | 0 | 0 |  |
Total ending loans balance | 347,197 | 347,904 |  |
Consumer [Member] |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Allowance for loan losses, Individually evaluated for impairment | 0 | 0 |  |
Allowance for loan losses, Collectively evaluated for impairment | 1,707 | 1,699 |  |
Allowance for loan losses, Modified in a troubled debt restructuring | 0 | 0 |  |
Total ending allowance balance | 1,707 | 1,699 | 1,435 | 1,404
Loans: |  |  |  |
Loans individually evaluated for impairment | 0 | 0 |  |
Loans collectively evaluated for impairment | 54,573 | 55,267 |  |
Loans modified in a troubled debt restructuring | 0 | 0 |  |
Total ending loans balance | 54,573 | 55,267 |  |
Credit Cards [Member] |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Allowance for loan losses, Individually evaluated for impairment | 0 | 0 |  |
Allowance for loan losses, Collectively evaluated for impairment | 77 | 83 |  |
Allowance for loan losses, Modified in a troubled debt restructuring | 0 | 0 |  |
Total ending allowance balance | 77 | 83 | 96 | 71
Loans: |  |  |  |
Loans individually evaluated for impairment | 0 | 0 |  |
Loans collectively evaluated for impairment | 4,604 | 4,800 |  |
Loans modified in a troubled debt restructuring | 0 | 0 |  |
Total ending loans balance | 4,604 | 4,800 |  |
Overdrafts [Member] |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Allowance for loan losses, Individually evaluated for impairment | 0 | 0 |  |
Allowance for loan losses, Collectively evaluated for impairment | 148 | 175 |  |
Allowance for loan losses, Modified in a troubled debt restructuring | 0 | 0 |  |
Total ending allowance balance | 148 | 175 | 168 | 168
Loans: |  |  |  |
Loans individually evaluated for impairment | 0 | 0 |  |
Loans collectively evaluated for impairment | 946 | 971 |  |
Loans modified in a troubled debt restructuring | 0 | 0 |  |
Total ending loans balance | $ 946 | $ 971 |  |

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- Definition Total of loans held-for-sale and held-in-portfolio net of unearned income, allowance for loan and lease losses, if any, unamortized loan origination and other fees and costs, and purchased premiums or discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph a -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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