| **Impact of Accounting Changes** | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
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| Impact of Accounting Changes     | Note 11.  Impact of Accounting ChangesGoodwill: In September 2011, the Financial Accounting Standards Board (FASB)issued Accounting Standards Update (ASU) No. 2011-08 “Intangibles —Goodwill and Other (Topic 350) - Testing Goodwill forImpairment.”   ASU 2011-08 allows an entity theoption to make a qualitative evaluation about the likelihood ofgoodwill impairment to determine whether it should calculate thefair value of the reporting unit.  ASU 2011-08 is effectivefor annual and interim goodwill impairment tests performed forfiscal years beginning after December 15, 2011.  Earlyadoption is permitted.  The Corporation is assessing theimpact of ASU 2011-08 on goodwill impairment testing but does notexpect an impact on its financial condition or results ofoperations. ComprehensiveIncome:  In June 2011, the FASB issued ASU No. 2011-05“Comprehensive Income(Topic 220) - Presentation of ComprehensiveIncome.”   ASU 2011-05 requires thatall nonowner changes in stockholders’ equity be presentedeither in a single continuous statement of comprehensive income orin two separate but consecutive statements.  In both choices,an entity is required to present each component of net income alongwith total net income, each component of other comprehensive incomealong with a total for other comprehensive income, and a totalamount for comprehensive income.  ASU 2011-05 is effectiveretrospectively for fiscal years, and interim periods within thoseyears, beginning after December 15, 2011.  The Corporation isassessing the impact of ASU 2011-05 on its comprehensive incomepresentation. FairValue Measurements:  In May 2011,the FASB issued ASU No. 2011-04 “Fair Value Measurement(Topic 820) - Amendments to Achieve Common Fair Value Measurementand Disclosure Requirements in U.S. GAAP and IFRSs.”ASU 2011-04 changes the wording used to describe many of therequirements in U.S. GAAP for measuring fair value and fordisclosing information about fair value measurements. Consequently, the amendments in this update result in common fairvalue measurement and disclosure requirements in U.S. GAAP andIFRSs (International Financial Reporting Standards).  ASU2011-04 is effective prospectively during interim and annualperiods beginning on or after December 15, 2011.  Earlyapplication by public entities is notpermitted.  The Corporation is assessing the impact of ASU2011-04 on its fair value disclosures. Transfersand Servicing:  In April 2011, the FASB issued ASU No.2011-03 “Transfers andServicing (Topic 860) - Reconsideration of Effective Control forRepurchase Agreement.”   ASU 2011-03 removes fromthe assessment of effective control the criterion relating to thetransferor’s ability to repurchase or redeem financial assetson substantially the agreed terms, even in the event of default bythe transferee.  ASU 2011-03 is effective for the firstinterim or annual period beginning on or after December 15,2011.  The guidance should be applied prospectively totransactions or modifications of existing transactions that occuron or after the effective date.  Early adoption is notpermitted.  The Corporation is assessing the impact of ASU2011-03 on its financial condition, results of operations, anddisclosures. Receivables: In April 2011, the FASB issued ASU No. 2011-02 “Receivables (Topic310) - A Creditor’s Determination of Whether a Restructuringis a Troubled Debt Restructuring.”   ASU 2011-02clarifies whether loan modifications constitute troubled debtrestructurings.  In evaluating whether a restructuringconstitutes a troubled debt restructuring, a creditor mustseparately conclude that both of the following exist: (a) therestructuring constitutes a concession; and (b) the debtor isexperiencing financial difficulties.  ASU 2011-02 waseffective for the first interim and annual period beginning on orafter June 15, 2011, and should be applied retrospectively to thebeginning of the annual period of adoption.  The impact of ASU2011-02 on The Corporation’s disclosures is reflected in Note3 — Loan and Allowance, included within the Notes toConsolidated Condensed Financial Statements of this Form10Q. |

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| - Definition
The entire disclosure for reporting accounting changes and error corrections. It includes the conveyance of information necessary for a user of the Company's financial information to understand all aspects and required disclosure information concerning all changes and error corrections reported in the Company's financial statements for the period.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 1.N.Q3) -URI http://asc.fasb.org/extlink&oid=6369664&loc=d3e30840-122693Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=6368906&loc=d3e21914-107793Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 154 -Paragraph 17, 22, 25, 26 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6801783&loc=d3e22499-107794Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 1 -Section NReference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6801783&loc=d3e22595-107794Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6801783&loc=d3e22644-107794
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