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Loans and Allowance for Loan Losses (Details 1) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Dec. 31, 2012
Summary of balance of the allowance for loan losses and the recorded investment in loans |  |  |
Beginning balance | $ 6,811 | $ 6,529 | $ 6,529
Charge Offs | (136) | (474) | (1,328)
Recoveries | 18 | 103 | 260
Provision | 299 | 451 | 1,350
Ending Balance | 6,992 | 6,609 | 6,811
Ending balance individually evaluated for impairment | 1,019 |  | 1,121
Ending balance collectively evaluated for impairment | 5,973 |  | 5,690
Loans, Ending balance individually evaluated for impairment | 4,737 |  | 5,322
Loans, Ending balance collectively evaluated for impairment | 450,969 |  | 458,343
Commercial Industrial [Member] |  |  |
Summary of balance of the allowance for loan losses and the recorded investment in loans |  |  |
Beginning balance | 1,561 | 1,914 | 1,914
Charge Offs |  | (205) | (390)
Recoveries | 3 | 2 | 41
Provision | (84) | 144 | (4)
Ending Balance | 1,480 | 1,855 | 1,561
Ending balance individually evaluated for impairment | 397 |  | 485
Ending balance collectively evaluated for impairment | 1,083 |  | 1,076
Loans, Ending balance individually evaluated for impairment | 1,121 |  | 1,232
Loans, Ending balance collectively evaluated for impairment | 79,573 |  | 80,535
Commercial RE & Construction [Member] |  |  |
Summary of balance of the allowance for loan losses and the recorded investment in loans |  |  |
Beginning balance | 3,034 | 2,880 | 2,880
Charge Offs | (5) | (42) | (287)
Recoveries | 13 | 23 | 50
Provision | 224 | 52 | 391
Ending Balance | 3,266 | 2,913 | 3,034
Ending balance individually evaluated for impairment | 52 |  | 55
Ending balance collectively evaluated for impairment | 3,214 |  | 2,979
Loans, Ending balance individually evaluated for impairment | 395 |  | 725
Loans, Ending balance collectively evaluated for impairment | 199,220 |  | 200,667
Agricultural & Farmland [Member] |  |  |
Summary of balance of the allowance for loan losses and the recorded investment in loans |  |  |
Beginning balance | 186 | 51 | 51
Charge Offs |  |  | (10)
Recoveries | 1 | 1 | 7
Provision | (8) |  | 138
Ending Balance | 179 | 52 | 186
Ending balance individually evaluated for impairment |  |  |
Ending balance collectively evaluated for impairment | 179 |  | 186
Loans, Ending balance individually evaluated for impairment |  |  |
Loans, Ending balance collectively evaluated for impairment | 37,950 |  | 42,276
Residential Real Estate [Member] |  |  |
Summary of balance of the allowance for loan losses and the recorded investment in loans |  |  |
Beginning balance | 1,088 | 956 | 956
Charge Offs |  | (51) | (129)
Recoveries |  | 71 | 86
Provision | 22 | 24 | 175
Ending Balance | 1,110 | 1,000 | 1,088
Ending balance individually evaluated for impairment | 367 |  | 386
Ending balance collectively evaluated for impairment | 743 |  | 702
Loans, Ending balance individually evaluated for impairment | 2,585 |  | 2,683
Loans, Ending balance collectively evaluated for impairment | 87,084 |  | 85,176
Home Equity & Consumer [Member] |  |  |
Summary of balance of the allowance for loan losses and the recorded investment in loans |  |  |
Beginning balance | 839 | 599 | 599
Charge Offs | (131) | (160) | (484)
Recoveries | 1 | 2 | 69
Provision | 136 | 212 | 655
Ending Balance | 845 | 653 | 839
Ending balance individually evaluated for impairment | 203 |  | 195
Ending balance collectively evaluated for impairment | 642 |  | 644
Loans, Ending balance individually evaluated for impairment | 636 |  | 682
Loans, Ending balance collectively evaluated for impairment | 47,004 |  | 49,541
Other [Member] |  |  |
Summary of balance of the allowance for loan losses and the recorded investment in loans |  |  |
Beginning balance | 103 | 139 | 139
Charge Offs |  | (16) | (28)
Recoveries |  | 3 | 6
Provision | 9 | 9 | (14)
Ending Balance | 112 | 135 | 103
Ending balance collectively evaluated for impairment | 112 |  | 103
Loans, Ending balance collectively evaluated for impairment | 138 |  | 148
Unallocated [Member] |  |  |
Summary of balance of the allowance for loan losses and the recorded investment in loans |  |  |
Beginning balance |  | (10) | (10)
Charge Offs |  |  |
Recoveries |  | 1 | 1
Provision |  | 10 | 8
Ending Balance |  | 1 |
Ending balance collectively evaluated for impairment |  |  | (1)
Loans, Ending balance collectively evaluated for impairment |  |  |

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- 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 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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