Fair Value Measurements (Details) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Available-for-Sale Securities: [Abstract]
Total Assets Measured at Fair Value On a Recurring Basis	$ 417,991,000	$ 479,820,000
Other Real Estate [Abstract]
Impaired loans with a partial charge-off or where an allowance was established	1,700,000	3,000,000
Allowance for loan losses	1,374,000	1,636,000
ORE, valuation allowance	4,100,000	4,100,000
Fair Value, Measurements, Recurring [Member] \| Fair Value [Member]
Available-for-Sale Securities: [Abstract]
Government Agency & Government-Sponsored Entities	26,823,000	82,595,000
Obligations of States and Political Subdivisions	5,665,000	5,782,000
Mortgage Backed Securities	352,772,000	391,033,000
Corporate Securities	22,558,000
Other	10,173,000	410,000
Total Assets Measured at Fair Value On a Recurring Basis	417,991,000	479,820,000
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Available-for-Sale Securities: [Abstract]
Government Agency & Government-Sponsored Entities	21,731,000	21,109,000
Obligations of States and Political Subdivisions	0	0
Mortgage Backed Securities	0	0
Corporate Securities	4,020,000
Other	9,863,000	0
Total Assets Measured at Fair Value On a Recurring Basis	35,614,000	21,109,000
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Available-for-Sale Securities: [Abstract]
Government Agency & Government-Sponsored Entities	5,092,000	61,486,000
Obligations of States and Political Subdivisions	0	0
Mortgage Backed Securities	352,772,000	391,033,000
Corporate Securities	18,538,000
Other	310,000	410,000
Total Assets Measured at Fair Value On a Recurring Basis	376,712,000	452,929,000
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Available-for-Sale Securities: [Abstract]
Government Agency & Government-Sponsored Entities	0	0
Obligations of States and Political Subdivisions	5,665,000	5,782,000
Mortgage Backed Securities	0	0
Corporate Securities	0
Other	0	0
Total Assets Measured at Fair Value On a Recurring Basis	5,665,000	5,782,000
Changes in level 3 assets measured at fair value on a recurring basis [Roll Forward]
Balance at Beginning of Period	5,782,000	0
Total Realized and Unrealized Gains/(Losses) Included in Income	0	0
Total Unrealized Gains/(Losses) Included in Other Comprehensive Income	0	0
Purchase of Securities	0	0
Sales, Maturities, and Calls of Securities	(117,000)	0
Net Transfers In/(Out) of Level 3	0	5,782,000
Balance at End of Period	5,665,000	5,782,000
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value [Member]
Impaired Loans [Abstract]
Commercial Real Estate		2,328,000
Residential 1st Mortgage	235,000	89,000
Home Equity Lines and Loans	462,000	166,000
Agricultural	1,010,000	409,000
Commercial		50,000
Total Impaired Loans	1,707,000	3,042,000
Other Real Estate [Abstract]
Real Estate Construction	2,553,000	2,553,000
Residential 1st Mortgage		371,000
Total Other Real Estate	2,553,000	2,924,000
Total Assets Measured at Fair Value On a Non-Recurring Basis	4,260,000	5,966,000
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Impaired Loans [Abstract]
Commercial Real Estate		0
Residential 1st Mortgage	0	0
Home Equity Lines and Loans	0	0
Agricultural	0	0
Commercial		0
Total Impaired Loans	0	0
Other Real Estate [Abstract]
Real Estate Construction	0	0
Residential 1st Mortgage		0
Total Other Real Estate	0	0
Total Assets Measured at Fair Value On a Non-Recurring Basis	0	0
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Impaired Loans [Abstract]
Commercial Real Estate		0
Residential 1st Mortgage	0	0
Home Equity Lines and Loans	0	0
Agricultural	0	0
Commercial		0
Total Impaired Loans	0	0
Other Real Estate [Abstract]
Real Estate Construction	0	0
Residential 1st Mortgage		0
Total Other Real Estate	0	0
Total Assets Measured at Fair Value On a Non-Recurring Basis	0	0
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Impaired Loans [Abstract]
Commercial Real Estate		2,328,000
Residential 1st Mortgage	235,000	89,000
Home Equity Lines and Loans	462,000	166,000
Agricultural	1,010,000	409,000
Commercial		50,000
Total Impaired Loans	1,707,000	3,042,000
Other Real Estate [Abstract]
Real Estate Construction	2,553,000	2,553,000
Residential 1st Mortgage		371,000
Total Other Real Estate	2,553,000	2,924,000
Total Assets Measured at Fair Value On a Non-Recurring Basis	$ 4,260,000	$ 5,966,000

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Fair value disclosure of secured and unsecured loans for purposes such as seasonal working capital needs, inventory financing, equipment purchases and acquisitions.

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Fair value disclosure of loans solely used for business purposes.

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Fair value disclosure of revolving, open-end loan extended under a line of credit and secured by the borrower's residential property.

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Amount of impaired loans with a partial charge-off or where an allowance was established.

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Fair value disclosure of other real estate owned relating to residential 1st mortgage.

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Fair value disclosure of other real estate related to construction.

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Fair value disclosure of loans to purchase or refinance residential real estate for example, but not limited to a home, in which the real estate itself serves as collateral for the loan.

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Total fair value disclosure of other real estate assets.

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This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

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-Name Accounting Standards Codification

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Amount of gain (loss) recognized in earnings, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3).

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Amount of gain (loss) recognized in other comprehensive income, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3).

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Purchases that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

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Sales that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

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This element represents [net] transfers in to and out of assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period.

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This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

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Amount of allowance for credit losses related to recorded investment.

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The valuation allowance loss on real estate owned or any impairment losses taken against real estate investments held for use or resale.

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-Publisher SEC

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