Fair Value (Details 3) (Level 3 [Member], USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2012
Quantitative information about level 3 fair value measurements
Fair Value at September 30, 2012	6,654
Equity Securities [Member]
Quantitative information about level 3 fair value measurements
Fair Value at September 30, 2012	998
Equity Securities [Member] \| Weighted Average [Member]
Quantitative information about level 3 fair value measurements
Weighted Average	64.94%
Equity Securities [Member] \| Market Average [Member]
Quantitative information about level 3 fair value measurements
Valuation Technique(s)	Market Average
Unobservable Input	Price to book multiple of peer group
Impaired Loans [Member]
Quantitative information about level 3 fair value measurements
Fair Value at September 30, 2012	4,705
Impaired Loans [Member] \| Real estate [Member]
Quantitative information about level 3 fair value measurements
Valuation Technique(s)	Appraisal Value-Real estate
Unobservable Input	Discount applied to appraisal
Weighted Average	6.40%
Impaired Loans [Member] \| Accounts receivable [Member]
Quantitative information about level 3 fair value measurements
Valuation Technique(s)	Appraisal Value-Accounts receivable
Unobservable Input	Discount applied to appraisal
Weighted Average	94.78%
Impaired Loans [Member] \| Equipment [Member]
Quantitative information about level 3 fair value measurements
Valuation Technique(s)	Appraisal Value-Vehicles/equipment
Unobservable Input	Discount applied to appraisal
Weighted Average	78.42%
Other real estate [Member]
Quantitative information about level 3 fair value measurements
Fair Value at September 30, 2012	951
Valuation Technique(s)	Appraisal Value
Other real estate [Member] \| Weighted Average [Member]
Quantitative information about level 3 fair value measurements
Weighted Average	0.00%
Other real estate [Member] \| Appraisal Value [Member]
Quantitative information about level 3 fair value measurements
Unobservable Input	Discount applied to appraisal

- Definition

For each line item in the statement of financial position that includes an item or items for which the fair value option has been elected, this element represents information to enable users of the financial statements to understand how each line item in the statement of financial position relates to major categories of assets and liabilities in terms of the fair value measurement hierarchy. The fair value measurement hierarchy consists of three levels including: using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

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