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Fair Value Measurements (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Fair Value Measurements [Abstract]
Percentage of securities using market-based information	97.00%
Percentage of securities using model-based techniques	3.00%
Change in unrealized gains or losses included in earnings relating to assets still held		$ 37
Impaired loans, carrying amount	9,386
Allocated allowance for loan losses	3,688
Fair value of allocated allowance	6,459
Estimated costs to sell	760
Provision for fair value measurements included in allowance for loan losses	3,688
Carrying amount of OREO	3,636
Write down of OREO	2,014
Fair value of OREO	2,306
Estimated cost to sell OREO	292
Loss from OREO included in earnings	1,622
Minimum corporation reserves for commercial loan	$ 500

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Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings Relating To Assets Still Held.

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Fair value of OREO.

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Loss from OREO included in earnings.

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Impaired loans.

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Impaired Loans Cost To Sell

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Minimum corporation reserves for commercial loan.

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Other Real Estate Fair Value Disclosure

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Estimated cost to sell OREO.

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Other real estate owned written down value.

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Percentage of securities using market based information.

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Percentage of securities using model based techniques.

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Provision For Loan And Lease Losses Fair Value Disclosure

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The recorded investment related to impaired financing receivables.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

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-Section 50

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Amount of allowance for credit losses related to recorded investment.

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