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Allowance for Loan Losses, evaluated for impairment (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Dec. 31, 2012 | Jun. 30, 2012 | Dec. 31, 2011
--- | --- | --- | --- | ---
Ending allowance balance [Abstract] |  |  |  |
Individually evaluated for impairment | $ 4,193 |  | $ 4,741 |
Collectively evaluated for impairment | 8,764 |  | 10,552 |
Total ending allowance balance | 12,957 | 12,737 | 15,293 | 15,650
Ending loan balance [Abstract] |  |  |  |
Individually evaluated for impairment | 44,407 |  | 65,959 |
Collectively evaluated for impairment | 699,736 |  | 650,402 |
Total Loans | 744,143 | 747,050 | 716,361 |
Commercial [Member] |  |  |  |
Ending allowance balance [Abstract] |  |  |  |
Individually evaluated for impairment | 551 |  | 300 |
Collectively evaluated for impairment | 466 |  | 742 |
Total ending allowance balance | 1,017 | 981 | 1,042 | 1,071
Ending loan balance [Abstract] |  |  |  |
Individually evaluated for impairment | 2,388 |  | 1,721 |
Collectively evaluated for impairment | 48,770 |  | 53,553 |
Total Loans | 51,158 | 55,684 | 55,274 |
Agricultural [Member] |  |  |  |
Ending allowance balance [Abstract] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 299 |  | 297 |
Total ending allowance balance | 299 | 296 | 297 | 297
Ending loan balance [Abstract] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 14,177 |  | 11,284 |
Total Loans | 14,177 | 6,211 | 11,284 |
Commercial Construction [Member] |  |  |  |
Ending allowance balance [Abstract] |  |  |  |
Individually evaluated for impairment | 1,580 |  | 2,111 |
Collectively evaluated for impairment | 395 |  | 1,151 |
Total ending allowance balance | 1,975 | 1,890 | 3,262 | 3,123
Ending loan balance [Abstract] |  |  |  |
Individually evaluated for impairment | 10,007 |  | 22,595 |
Collectively evaluated for impairment | 42,692 |  | 33,773 |
Total Loans | 52,699 | 53,808 | 56,368 |
Residential Construction [Member] |  |  |  |
Ending allowance balance [Abstract] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 138 |  | 138 |
Total ending allowance balance | 138 | 138 | 138 | 138
Ending loan balance [Abstract] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 8,189 |  | 4,169 |
Total Loans | 8,189 | 5,852 | 4,169 |
Commercial RE [Member] |  |  |  |
Ending allowance balance [Abstract] |  |  |  |
Individually evaluated for impairment | 1,080 |  | 1,462 |
Collectively evaluated for impairment | 4,104 |  | 4,483 |
Total ending allowance balance | 5,184 | 5,163 | 5,945 | 6,448
Ending loan balance [Abstract] |  |  |  |
Individually evaluated for impairment | 23,144 |  | 33,395 |
Collectively evaluated for impairment | 302,173 |  | 275,541 |
Total Loans | 325,317 | 334,386 | 308,936 |
Residential RE [Member] |  |  |  |
Ending allowance balance [Abstract] |  |  |  |
Individually evaluated for impairment | 982 |  | 868 |
Collectively evaluated for impairment | 2,430 |  | 2,842 |
Total ending allowance balance | 3,412 | 3,406 | 3,710 | 3,695
Ending loan balance [Abstract] |  |  |  |
Individually evaluated for impairment | 6,591 |  | 5,951 |
Collectively evaluated for impairment | 201,971 |  | 187,239 |
Total Loans | 208,562 | 203,845 | 193,190 |
Farmland [Member] |  |  |  |
Ending allowance balance [Abstract] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 306 |  | 331 |
Total ending allowance balance | 306 | 291 | 331 | 365
Ending loan balance [Abstract] |  |  |  |
Individually evaluated for impairment | 2,277 |  | 2,277 |
Collectively evaluated for impairment | 47,521 |  | 46,471 |
Total Loans | 49,798 | 49,057 | 48,748 |
Consumer [Member] |  |  |  |
Ending allowance balance [Abstract] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 273 |  | 253 |
Total ending allowance balance | 273 | 228 | 253 | 205
Ending loan balance [Abstract] |  |  |  |
Individually evaluated for impairment | 0 |  | 20 |
Collectively evaluated for impairment | 27,439 |  | 29,632 |
Total Loans | 27,439 | 29,778 | 29,652 |
Other [Member] |  |  |  |
Ending allowance balance [Abstract] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 353 |  | 315 |
Total ending allowance balance | 353 | 344 | 315 | 308
Ending loan balance [Abstract] |  |  |  |
Individually evaluated for impairment | 0 |  | 0 |
Collectively evaluated for impairment | 6,804 |  | 8,740 |
Total Loans | $ 6,804 | $ 8,429 | $ 8,740 |

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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 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 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 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 2: 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 3: 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 4: 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 5: 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 6: 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 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 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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