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Loans and Allowance for Loan Losses (Details 1) (USD $) In Thousands, unless otherwise specified |  |  | 3 Months Ended
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Mar. 31, 2013 | Dec. 31, 2012 | Mar. 31, 2013 Loans [Member] | Mar. 31, 2012 Loans [Member] | Mar. 31, 2013 Loans [Member] Residential Real Estate [Member] | Mar. 31, 2012 Loans [Member] Residential Real Estate [Member] | Mar. 31, 2013 Loans [Member] Construction Loans [Member] | Mar. 31, 2012 Loans [Member] Construction Loans [Member] | Mar. 31, 2013 Loans [Member] Commercial Real Estate [Member] | Mar. 31, 2012 Loans [Member] Commercial Real Estate [Member] | Mar. 31, 2013 Loans [Member] Commercial Loan [Member] | Mar. 31, 2012 Loans [Member] Commercial Loan [Member] | Mar. 31, 2013 Loans [Member] Agriculture Loans [Member] | Mar. 31, 2012 Loans [Member] Agriculture Loans [Member] | Mar. 31, 2013 Loans [Member] Municipal Bonds [Member] | Mar. 31, 2012 Loans [Member] Municipal Bonds [Member] | Mar. 31, 2013 Loans [Member] Consumer Loan [Member] | Mar. 31, 2012 Loans [Member] Consumer Loan [Member]
Allowance for loan losses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance | $ 4,634 | $ 4,581 | $ 4,581 | $ 4,707 | $ 714 | $ 560 | $ 1,214 | $ 928 | $ 1,313 | $ 1,791 | $ 707 | $ 745 | $ 367 | $ 433 | $ 107 | $ 130 | $ 159 | $ 120
Charge-offs |  |  | (269) | (44) | (23) | 0 | 0 | 0 | 0 | 0 | (199) | 0 | 0 | 0 | 0 | 0 | (47) | (44)
Recoveries |  |  | 22 | 51 | 8 | 2 | 2 | 1 | 0 | 0 | 1 | 4 | 0 | 38 | 0 | 0 | 11 | 6
Net charge-offs |  |  | (247) | 7 | (15) | 2 | 2 | 1 | 0 | 0 | (198) | 4 | 0 | 38 | 0 | 0 | (36) | (38)
Provision for loan losses |  |  | 300 | 300 | (121) | 129 | (82) | 133 | 295 | 106 | 106 | (21) | 140 | (63) | (6) | 5 | (32) | 11
Balance | 4,634 | 4,581 | 4,634 | 5,014 | 578 | 691 | 1,134 | 1,062 | 1,608 | 1,897 | 615 | 728 | 507 | 408 | 101 | 135 | 91 | 93
Allowance for loan losses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for loss |  |  | 474 | 193 | 28 | 66 | 332 | 10 | 0 | 0 | 49 | 34 | 0 | 0 | 65 | 65 | 0 | 18
Collectively evaluated for loss |  |  | 4,160 | 4,821 | 550 | 625 | 802 | 1,052 | 1,608 | 1,897 | 566 | 694 | 507 | 408 | 36 | 70 | 91 | 75
Total | 4,634 | 4,581 | 4,634 | 5,014 | 578 | 691 | 1,134 | 1,062 | 1,608 | 1,897 | 615 | 728 | 507 | 408 | 101 | 135 | 91 | 93
Loan balances: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for loss |  |  | 13,233 | 3,012 | 757 | 1,277 | 8,603 | 25 | 2,833 | 227 | 236 | 648 | 5 | 12 | 772 | 784 | 27 | 39
Collectively evaluated for loss |  |  | 305,455 | 300,716 | 90,623 | 75,173 | 15,591 | 20,519 | 90,259 | 92,261 | 58,804 | 55,451 | 31,771 | 35,030 | 5,753 | 9,281 | 12,654 | 13,001
Total | $ 314,269 | $ 315,914 | $ 318,688 | $ 303,728 | $ 91,380 | $ 76,450 | $ 24,194 | $ 20,544 | $ 93,092 | $ 92,488 | $ 59,040 | $ 56,099 | $ 31,776 | $ 35,042 | $ 6,525 | $ 10,065 | $ 12,681 | $ 13,040

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- Definition Net amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities. + References No definition available. + Details
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- Definition Reflects the amount charged against earnings during the period as bad debt expense, net of recoveries of previously expensed credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 -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 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(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 + Details
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- Definition Reflects a reduction in bad debt expense attributable to collections of loans and lease receivables which had previously been fully or partially charged off as bad debts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 -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 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(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 + Details
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- Definition Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 -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 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(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 + 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 allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 8, 9 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 3: 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(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Section 563c.102 -Paragraph 8 -Subparagraph a(ii) -Chapter V -Subsection I -LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 -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 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section L -Subsection 1 + Details
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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. 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. Reference 3: 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) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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