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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2012
Fair Value Measurements [Abstract] |
Assets measured at fair value on a recurring basis |
|  |  |  |  | Fair Value Measurements |
(in thousands) |  | Fair Value |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury |  | $ | 2,030 |  |  | $ | 2,030 |  |  | $ | 0 |  |  | $ | 0 |
Government sponsored enterprises |  |  | 55,180 |  |  |  | 0 |  |  |  | 55,180 |  |  |  | 0 |
Asset-backed securities |  |  | 107,872 |  |  |  | 0 |  |  |  | 107,872 |  |  |  | 0 |
Obligations of states and political subdivisions |  |  | 35,164 |  |  |  | 0 |  |  |  | 35,164 |  |  |  | 0 |
Mortgage servicing rights |  |  | 2,549 |  |  |  | 0 |  |  |  | 0 |  |  |  | 2,549 |
Total |  | $ | 202,795 |  |  | $ | 2,030 |  |  | $ | 198,216 |  |  | $ | 2,549 |
December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury |  | $ | 2,054 |  |  | $ | 2,054 |  |  | $ | 0 |  |  | $ | 0 |
Government sponsored enterprises |  |  | 70,314 |  |  |  | 0 |  |  |  | 70,314 |  |  |  | 0 |
Asset-backed securities |  |  | 107,329 |  |  |  | 0 |  |  |  | 107,329 |  |  |  | 0 |
Obligations of states and political subdivisions |  |  | 34,109 |  |  |  | 0 |  |  |  | 34,109 |  |  |  | 0 |
Total |  | $ | 213,806 |  |  | $ | 2,054 |  |  | $ | 211,752 |  |  | $ | 0 |
Summary of changes in Level 3 assets and liabilities measured at fair value on a recurring basis |
(in thousands) |  | Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Mortgage Servicing Rights |
Balance at December 31, 2011 |  | $ | 0 |
Transfer into level 3 |  |  | 3,050 |
Total gains or losses (realized/unrealized): |  |  |  |
Included in earnings |  |  | (1,331 | )
Included in other comprehensive income |  |  | 0 |
Purchases |  |  | 0 |
Sales |  |  | 0 |
Issues |  |  | 830 |
Settlements |  |  | 0 |
Balance at December 31, 2012 |  | $ | 2,549 |
Quantitative Information about Level 3 Fair Value Measurements |
|  | Quantitative Information about Level 3 Fair Value Measurements |
|  | Valuation Technique |  | Unobservable Inputs |  | Input Value |
|  |  |  |  |  | 2012 |  |  | 2011 |
Mortgage servicing rights |  | Discounted cash flows |  | Weighted average constant prepayment rate |  |  | 18.60 | % |  |  | 20.86 | %
|  |  |  | Weighted average discount rate |  |  | 7.99 | % |  |  | 7.99 | %
Valuation methodologies used for assets and liabilities recorded at fair value on a nonrecurring basis |
|  | Fair Value Measurements Using |
(in thousands) |  | Total Fair Value |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |  |  | Total Gains (Losses)* |
December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impaired loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial, financial, & agricultural |  | $ | 672 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 672 |  |  | $ | (1,659 | )
Real estate construction—residential |  |  | 64 |  |  |  | 0 |  |  |  | 0 |  |  |  | 64 |  |  |  | 0 |
Real estate construction—commercial |  |  | 5,341 |  |  |  | 0 |  |  |  | 0 |  |  |  | 5,341 |  |  |  | 0 |
Real estate mortgage—residential |  |  | 2,763 |  |  |  | 0 |  |  |  | 0 |  |  |  | 2,763 |  |  |  | (839 | )
Real estate mortgage—commercial |  |  | 11,726 |  |  |  | 0 |  |  |  | 0 |  |  |  | 11,726 |  |  |  | (2,716 | )
Consumer |  |  | 44 |  |  |  | 0 |  |  |  | 0 |  |  |  | 44 |  |  |  | 0 |
Total |  | $ | 20,610 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 20,610 |  |  | $ | (5,214 | )
Other real estate owned and repossessed assets |  | $ | 23,592 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 23,592 |  |  | $ | (4,378 | )
December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impaired loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial, financial, & agricultural |  | $ | 643 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 643 |  |  | $ | (2,136 | )
Real estate construction—residential |  |  | 396 |  |  |  | 0 |  |  |  | 0 |  |  |  | 396 |  |  |  | (1,557 | )
Real estate construction—commercial |  |  | 6,029 |  |  |  | 0 |  |  |  | 0 |  |  |  | 6,029 |  |  |  | (279 | )
Real estate mortgage—residential |  |  | 3,601 |  |  |  | 0 |  |  |  | 0 |  |  |  | 3,601 |  |  |  | (1,509 | )
Real estate mortgage—commercial |  |  | 15,980 |  |  |  | 0 |  |  |  | 0 |  |  |  | 15,980 |  |  |  | (5,842 | )
Total |  | $ | 26,649 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 26,649 |  |  | $ | (11,323 | )
Other real estate owned and repossessed assets |  | $ | 16,020 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 16,020 |  |  | $ | (2,112 | )
* | Total gains (losses) reported for other real estate owned and repossessed assets includes charge offs, valuation write downs, and net losses taken during the periods reported.

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- Definition Tabular disclosure related to assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a recurring and/or nonrecurring basis in periods after initial recognition. Disclosures include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3) as well as transfers between levels 1 and 2. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 6 -Footnote 4 -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 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a,b,bb) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -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 Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI http://asc.fasb.org/extlink&oid=7578670&loc=SL7498348-110258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19279-110258 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 33 -Subparagraph a, b -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 Tabular disclosure of the inputs and valuation techniques used to measure fair value, and a discussion of changes in valuation techniques and related inputs, if any, used to measure similar assets in prior periods (non-recurring basis) by class of asset or liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 33 -Subparagraph d -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 Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 6 -Footnote 4 -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 Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -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 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of quantitative information about the inputs used in the fair value measurement of assets. This disclosure may include, but is not limited to, the fair value of the asset, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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