| **Derivative Financial Instruments** | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      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| Derivative Financial Instruments     | NOTE 5.  Derivative Financial InstrumentsCash Flow Hedges of Interest Rate RiskTheCorporation’s objectives in using interest rate derivativesare to add stability to interest expense and to manage its exposureto interest rate movements. To accomplish this objective, theCorporation primarily uses interest rate swaps and interest ratecaps as part of its interest rate risk managementstrategy.  Interest rate swaps designated as cash flowhedges involve the payment of fixed amounts to a counterparty inexchange for the Corporation receiving variable payments over thelife of the agreements without exchange of the underlying notionalamount. Interest rate caps designated as cash flow hedgesinvolve the receipt of variable amounts from a counterparty ifinterest rates rise above the strike rate on the contract inexchange for an up-front premium.  As of September 30,2011, the Corporation had one interest rate swap with a notionalamount of $13 million and one interest rate cap with a notionalamount of $13 million that were designated as cash flowhedges.Theeffective portion of changes in the fair value of derivativesdesignated and that qualify as cash flow hedges is recorded inaccumulated other comprehensive income and is subsequentlyreclassified into earnings in the period that the hedged forecastedtransaction affects earnings. During 2011, such derivatives wereused to hedge the forecasted LIBOR-based outflows associated withexisting trust preferred securities when the outflows convert froma fixed rate to variable rate in September 2012.  Theineffective portion of the change in fair value of the derivativesis recognized directly in earnings. During the nine months endedSeptember 30, 2011, the Corporation did not recognize anyineffectiveness.Amountsreported in accumulated other comprehensive income related toderivatives will be reclassified to interest expense as interestpayments are made on the Corporation’s variable-rateliabilities.  During the next twelve months, theCorporation does not expect to reclassify any amounts fromaccumulated other comprehensive income to interestexpense.Non-designated HedgesTheCorporation does not use derivatives for trading or speculativepurposes.  Derivatives not designated as hedges are notspeculative and result from a service the Corporation provides tocertain customers. The Corporation executes interest rate swapswith commercial banking customers to facilitate their respectiverisk management strategies.  Those interest rate swapsare simultaneously hedged by offsetting interest rate swaps thatthe Corporation executes with a third party, such that theCorporation minimizes its net risk exposure resulting from suchtransactions.  As the interest rate swaps associated withthis program do not meet the strict hedge accounting requirements,changes in the fair value of both the customer swaps and theoffsetting swaps are recognized directly in earnings.  Asof September 30, 2011, the notional amount of customer-facing swapswas approximately $107,478,000.  This amount is offsetwith third party counterparties, as described above.Fair Values of Derivative Instruments on the BalanceSheetThe tablebelow presents the fair value of the Corporation’s derivativefinancial instruments as well as their classification on theBalance Sheet as of September 30, 2011, and December 31,2010. Asset Derivatives Liability Derivatives  September 30, 2011 December 31, 2010 September 30, 2011 December 31, 2010  Balance Sheet Location Fair Value Balance Sheet Location Fair Value Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivativesdesignated as hedging instruments:                Interestrate contractsOtherAssets $456 OtherAssets $1,393 OtherLiabilities $1,772 OtherLiabilities $                       Derivativesnot designated as hedging instruments:                    Interestrate contractsOtherAssets $5,308 OtherAssets $3,718 OtherLiabilities $5,559 OtherLiabilities $3,876 Effect of Derivative Instruments on the IncomeStatementThe tablesbelow present the effect of the Corporation’s derivativefinancial instruments on the Income Statement for the three andnine months ended September 30, 2011, and September 30,2010.Derivatives Not Designated as Hedging Instruments under ASC815-10Location of Gain (Loss) Recognized Income onDerivative Amount of Gain (Loss) Recognized Income on Derivative  Amount of Gain (Loss) Recognized Income on Derivative    Three Months Ended September 30, 2011  Nine Months Ended September 30, 2011 Interestrate contractsOtherincome $(95) $(93)          Derivatives Not Designated as Hedging Instruments under ASC815-10Location of Gain (Loss) Recognized Income onDerivative Amount of Gain (Loss) Recognized Income on Derivative  Amount of Gain (Loss) Recognized Income on Derivative    Three Months Ended September 30, 2010  Nine Months Ended September 30, 2010 Interestrate contractsOtherincome $(24) $(237)TheCorporation’s exposure to credit risk occurs because ofnonperformance by its counterparties.  The counterpartiesapproved by the Corporation are usually financial institutions,which are well capitalized and have credit ratings throughMoody’s and/or Standard & Poor’s, at or aboveinvestment grade.  The Corporation’s control ofsuch risk is through quarterly financial reviews, comparingmark-to-mark values with policy limitations, credit ratings andcollateral pledging.Credit-risk-related Contingent FeaturesTheCorporation has agreements with certain of its derivativecounterparties that contain a provision where if the Corporationfails to maintain its status as a well or adequate capitalizedinstitution, then the Corporation could be required to terminate orfully collateralize all outstanding derivativecontracts.TheCorporation has agreements with certain of its derivativecounterparties that contain a provision where if the Corporationdefaults on any of its indebtedness, including default whererepayment of the indebtedness has not been accelerated by thelender, the Corporation could also be declared in default on itsderivative obligations.As ofSeptember 30, 2011, the termination value of derivatives in a netliability position related to these agreements was $7,546,000. Asof September 30, 2011, the Corporation has minimum collateralposting thresholds with certain of its derivative counterpartiesand has posted collateral of $6,535,000. If the Corporation hadbreached any of these provisions at September 30, 2011, it couldhave been required to settle its obligations under the agreementsat their termination value. |

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| - Definition
The entire disclosure for the entity's entire derivative instruments and hedging activities.  Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  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