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Fair Values of Financial Instruments (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	$ 155,905	$ 112,982
Fair Value, Recurring [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	155,905	112,202
Equity Securities [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	6,766	12,240
Equity Securities [Member] | Fair Value, Recurring [Member] | Domestic common stock [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	6,766	11,460
Debt Securities [Member] | Fair Value, Recurring [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	149,139	100,742
Debt Securities [Member] | Fair Value, Recurring [Member] | States and political subdivisions [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	98,243	57,761
Debt Securities [Member] | Fair Value, Recurring [Member] | U.S. agency-based mortgage-backed securities [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	11,086
Debt Securities [Member] | Fair Value, Recurring [Member] | Corporate bonds [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	39,810	42,981
Level 1 Inputs [Member] | Fair Value, Recurring [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	6,766	11,460
Level 1 Inputs [Member] | Equity Securities [Member] | Fair Value, Recurring [Member] | Domestic common stock [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	6,766	11,460
Level 2 Inputs [Member] | Fair Value, Recurring [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	149,139	100,742
Level 2 Inputs [Member] | Debt Securities [Member] | Fair Value, Recurring [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	149,139	100,742
Level 2 Inputs [Member] | Debt Securities [Member] | Fair Value, Recurring [Member] | States and political subdivisions [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	98,243	57,761
Level 2 Inputs [Member] | Debt Securities [Member] | Fair Value, Recurring [Member] | U.S. agency-based mortgage-backed securities [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	11,086
Level 2 Inputs [Member] | Debt Securities [Member] | Fair Value, Recurring [Member] | Corporate bonds [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value	39,810	42,981
Level 3 Inputs [Member] | Fair Value, Recurring [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value
Level 3 Inputs [Member] | Equity Securities [Member] | Fair Value, Recurring [Member] | Domestic common stock [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value
Level 3 Inputs [Member] | Debt Securities [Member] | Fair Value, Recurring [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value
Level 3 Inputs [Member] | Debt Securities [Member] | Fair Value, Recurring [Member] | States and political subdivisions [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value
Level 3 Inputs [Member] | Debt Securities [Member] | Fair Value, Recurring [Member] | U.S. agency-based mortgage-backed securities [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value
Level 3 Inputs [Member] | Debt Securities [Member] | Fair Value, Recurring [Member] | Corporate bonds [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Securities available for sale/Available-for-sale, Fair value

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph 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.



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594

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