Amendment Flag Current Fiscal Year End Date Document Period End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Registrant Name Entity Central Index Key Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Document Type Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis] Unrealized Gains Accounts, Notes, Loans and Financing Receivable by Receivable Type [Axis] Accounts, Notes, Loans and Financing Receivable by Receivable Type [Axis] Accounts, Notes, Loans and Financing Receivable [Line Items] Amortization of premiums on securities, net Accretion (Amortization) of Discounts and Premiums, Investments Accumulated Other Comprehensive Income (Loss) [Member] Unrealized loss on pension plans and other benefit Plans, opening balance Unrealized loss on pension plans and other benefit Plans, opening balance Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax Summary of accumulated other comprehensive income balance [Abstract] Unrealized gains on securities available for sale, opening balance Unrealized gains on securities available for sale, closing balance Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Total, Accumulated other comprehensive income, opening balance Total, Accumulated other comprehensive income, closing balance Accumulated other comprehensive income (loss) Acquired Finite-Lived Intangible Assets [Line Items] Balance Acquired Additional-paid-in capital Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Adjustments to reconcile net income to net cash provided by operating activities: Restricted stock awards Allowance for loan losses by portfolio segment Amortization of intangible assets ASSETS Assets: Total assets Segment assets Assets Financial Assets [Abstract] Assets, Fair Value Disclosure [Abstract] Without single maturity date Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value Total available for sale securities Available-for-sale Securities, Fair Value Disclosure After One, But Within Five Years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Within One Year Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Securities available for sale, at estimated fair value Securities available for sale After Ten Years Total Available-for-sale Securities, Debt Securities Within One Year Without single maturity date After Five, But Within Ten Years After Five, But Within Ten Years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Amortized cost and estimated fair value of securities available for sale Unrealized Losses Total After Ten Years Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value After One, But Within Five Years Amortized Cost Net gain on securities transactions Realized gain on available for sale securities, Gross Bank owned life insurance Income from bank owned life insurance Income from bank owned life insurance Bank Owned Life Insurance Income Merger related expenses Carrying Amount [Member] Total cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash and Cash Equivalents, at Carrying Value Cash received Fort Orange Financial Corporation acquisition Cash and due from financial institutions Net increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Supplemental disclosure of non-cash activity: Summary of changes in contractually required principal and interest on loans acquired Contractual cash flows not expected to be collected (nonaccretable discount), opening balance Contractual cash flows not expected to be collected (nonaccretable discount), closing balance Certain Loans Acquired in Transfer, Nonaccretable Difference Interest component of expected cash flows (accretable yield), opening balance Interest component of expected cash flows (accretable yield, closing balance Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Interest component of expected cash flows (accretable yield), income accretion Cash flows expected to be collected, opening balance Cash flows expected to be collected, closing balance Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition Fair value of loans acquired with deteriorating credit quality, opening balance Fair value of loans acquired with deteriorating credit quality, closing balance Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value Contractually required principal and interest, opening balance Contractually required principal and interest, closing balance Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition Collateralized Mortgage obligations [Member] Collateralized Mortgage Obligations [Member] Collateralized Mortgage obligations [Member] Construction [Member] Construction [Member] Construction [Member] Other [Member] Other [Member] Other [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies [Abstract] Common Stock [Member] Common stock, $.01 par value per share, 10,000,000 shares authorized;5,310,076 issued at September 30, 2012 and December 31, 2011 Common stock, shares issued (in shares) Cash dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Common stock, par value (in dollars per share) Common stock, shares authorized (in shares) Components of Quarterly and Year-to-Date Net Periodic Benefit Costs [Abstract] Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Accumulated Other Comprehensive Income Consolidation of subsidiaries Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block] Consolidation policy Consolidation, Policy [Policy Text Block] Other Direct Consumer Loans [Member] Other direct consumer loans [Member] Consumer loans [Member] Consumer Loans [Member] Consumer Loan [Member] Credit Cards [Member] Credit cards [Member] Core deposit intangibles [Member] Corporate bonds and notes [Member] Other customer relationship intangibles [Member] Doubtful [Member] Debt Security [Axis] Amortization of unrecognized prior service cost Amortization of unrecognized net gain loss Defined Benefit Plan, Amortization of Gains (Losses) Defined Benefit Plan Disclosure [Line Items] Amortization of unrecognized transition obligation Expected return on plan assets Defined Benefit Plan, Expected Return on Plan Assets Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis] Interest cost on projected benefit obligation Net periodic pension expense Defined Benefit Plan, Net Periodic Benefit Cost Service cost, benefits earned during the period Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] Defined Benefit Plan, Net Periodic Benefit Cost [Abstract] Total deposits Deposits Deposits: Deposits [Abstract] Depreciation and amortization of fixed assets Deteriorated Loans Transferred in [Abstract] Stock Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock Based Compensation [Abstract] Cash dividends declared Dividends, Common Stock, Cash Dividends payable Basic and diluted earnings per share ( in dollars per share) Earnings Per Share, Basic and Diluted Earnings Per Common Share Earnings Per Share [Text Block] Earnings Per Common Share [Abstract] Period for recognition of unrecognized compensation cost related to nonvested shares Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition Unrecognized compensation cost related to nonvested shares Furniture and equipment expenses Equity Component [Domain] Corporate stocks [Member] Fair Value [Member] Estimated Fair Value [Member] Fair Value by Measurement Frequency [Axis] Fair Value by Asset Class [Domain] Fair Value, Hierarchy [Axis] Recurring [Member] Fair Value, Measurement Frequency [Domain] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Asset Class [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Included in other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Fair Value [Abstract] Fair Value Fair Value Disclosures [Text Block] Non-recurring [Member] Reconciliation of all assets measured at fair value on a recurring basis Trust Preferred Securities [Rollforward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Summary of assets and liabilities measured at fair value on a non-recurring basis Fair value, assets and liabilities measured on recurring basis [Abstract] Carrying value and estimated fair value of financial instruments Fair Value, Disclosure Item Amounts [Domain] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Significant Unobservable Inputs (Level 3) [Member] Significant Unobservable Inputs (Level 3) [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] Significant Other Observable Inputs (Level 2) [Member] Significant Other Observable Inputs (Level 2) [Member] Transfers in and/or out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value FDIC insurance Federal Home Loan Bank term advances Wealth management group fee income Service charges on deposit accounts Financial liabilities [Abstract] Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Financial Assets [Abstract] Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Financing Receivable, Recorded Investment, Past Due [Line Items] Loans Past Due Over 90 Days Still Accruing Non-Accrual Acquired with deteriorated credit quality Loans Acquired with deteriorated credit quality Financing Receivable, Allowance for Credit Losses [Line Items] Individually evaluated for impairment Financing Receivable, Recorded Investment [Line Items] Acquired with deteriorated credit quality Allowance for loan losses, by portfolio segment [Roll Forward] 30-59 Days Past Due Financing Receivable Information by Credit Quality Indicator [Axis] Troubled debt restructuring two loan amount modified Charge Offs: Financing Receivable, Allowance for Credit Losses, Write-downs Financing Receivable, Recorded Investment, Class of Financing Receivable [Domain] Aging of the recorded investment in loans past due [Abstract] Write down of OREO Greater than 90 Days Past Due 60-89 Days Past Due Recoveries: Financing Receivable, Allowance for Credit Losses, Recovery Financing Receivable, Impaired [Line Items] Loans individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Financing Receivable, by Credit Quality Indicator [Domain] Loans Not Past Due Financing Receivable, Recorded Investment, Current Beginning balance: Ending balance Financing Receivable, Allowance for Credit Losses Risk category of the recorded investment of loans by class of loans Financing Receivable, Recorded Investment, by Class of Financing Receivable [Axis] Total Past Due Financing Receivable, Recorded Investment, Past Due Loans collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Collectively evaluated for impairment Finite-Lived Intangible Assets, Major Class Name [Domain] 2016 2014 Finite-lived intangible assets, future amortization expense [Abstract] Acquired Finite-Lived Intangible Assets by Major Class [Axis] Accumulated Amortization Finite-lived intangible assets, net [Abstract] 2017 and thereafter 2012 2015 2013 Other intangible assets, net Total Other real estate owned expenses Net (gains) losses on trading assets Gain (Loss) on Sale of Equity Investments Net gains on securities transactions Gain (Loss) on Sale of Securities, Net Gains on sales of loans held for sale, net Net gain on sales of loans held for sale Gain (Loss) on Sales of Loans, Net Net losses (gains) on sale of other real estate owned Gains (Losses) on Sales of Other Real Estate Goodwill Beginning of year Ending of year Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Adjustment of Acquired goodwill Acquired goodwill Goodwill [Roll Forward] Goodwill and Intangible Assets [Abstract] After One, But Within Five Years Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount Securities held to maturity, estimated fair value of $6,881,172 at September 30, 2012 and $9,175,956 at December 31, 2011 Securities held to maturity Amortized Cost Without single maturity date Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value After Five, But Within Ten Years Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount Within One Year Held-to-maturity Securities, Debt Maturities, Next Twelve Months, Fair Value After Ten Years Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value After One, But Within Five Years Held-to-maturity Securities, Debt Maturities, Year Two Through Five, Fair Value After Five, But Within Ten Years Held-to-maturity Securities, Debt Maturities, Year Six Through Ten, Fair Value After Ten Years Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount Unrealized Losses Held-to-maturity Securities, Unrecognized Holding Loss Amortized cost and estimated fair value of securities held to maturity Total Held-to-maturity Securities, Debt Maturities, Net Carrying Amount Within One Year Held-to-maturity Securities, Debt Maturities, within One Year, Net Carrying Amount Total Held-to-maturity Securities, Debt Maturities, Fair Value Without single maturity date Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount Securities held to maturity, fair value Estimated Fair Value Unrealized Gains Held-to-maturity Securities, Unrecognized Holding Gain Summary of impaired financing receivables Average Recorded Investment Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Recorded Investment Impaired loan valuation allowance Allowance for Loan Losses Allocated Interest Income Recognized Net impairment loss recognized on investment securities CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) [Abstract] Income before income tax expense Income or (loss) before income tax expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax expense Income tax expense (benefit) Income Taxes Net increase in demand deposits, NOW accounts, savings accounts, and insured money market accounts Decrease in other assets Increase (Decrease) in Other Operating Assets Decrease in accrued interest payable Decrease in other liabilities Net decrease in time deposits and individual retirement accounts Data processing expense Accrued interest payable Interest and dividend income: Loans, including fees Total interest expense Interest Expense Total interest and dividend income Interest and Dividend Income, Operating Interest expense: Borrowed funds Interest Expense, Borrowings Deposits Interest Expense, Deposits Interest-bearing deposits Net interest income Net interest income Interest Income (Expense), Net Securities sold under agreements to repurchase Tax exempt securities Net interest income after provision for loan losses Net interest income after provision for loan losses Accrued interest receivable Interest-bearing Interest Interest-bearing deposits in other financial institutions Taxable securities Amortized cost and estimated fair value of debt securities by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Securities [Abstract] Total liabilities Liabilities LIABILITIES AND SHAREHOLDERS' EQUITY Total liabilities and shareholders' equity Liabilities and Equity Loans individually evaluated for impairment [Abstract] Loans and Allowance for Loan Losses [Abstract] Allowance for loan losses Total ending allowance balance Loans and Leases Receivable, Allowance Loans, net of deferred origination fees and costs, and unearned income Loans and leases receivable Loans held for sale Loans Receivable Held-for-sale, Net Composition of loan portfolio [Abstract] Loans, net Net loans Total Impaired Loan, Fair Value Loans and Allowance for Loan Losses Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Trust beneficiaries seeking aggregate damages, maximum Major Types of Debt Securities [Domain] Schedule of Available-for-sale Securities, Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Marketing and advertising expense Mortgage-backed securities, residential Non-Performing [Member] CASH FLOWS FROM FINANCING ACTIVITIES: Net cash (used) provided by investing activities Net Cash Provided by (Used in) Investing Activities Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities CASH FLOWS FROM INVESTING ACTIVITIES: CASH FLOWS FROM OPERATING ACTIVITIES: Net income Net income Segment net income (loss) Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Adoption of New Accounting Standards [Abstract] Adoption of New Accounting Standards Non-interest-bearing Other Noninterest Income, Other Operating Income Other operating income: Other operating expenses: Total other operating income Other operating income Noninterest Income Total other operating expenses Other operating expenses Noninterest Expense Total ending loans balance Loans Total Financing Receivable, Net Net occupancy expenses Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Other assets Other than temporary impairment credit losses recognized in earnings [Roll Forward] Unrealized gains on securities available for sale, current period changes Net of tax amount Beginning balance Ending balance Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Other than temporary impairment recognized in other comprehensive income for securities available for sale Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Available-for-sale Securities Amounts realized for securities sold during the period Less: Tax effect Change in unrealized gains (losses) on securities available for sale for which a portion of an other-than-temporary impairment has been recognized in earnings, net of reclassification Reclassification adjustment gains realized in net income Roll forward of the cumulative credit losses recognized in earnings Amounts related to credit loss for which an other-than-temporary impairment was not previously recognized Other than temporary impairment losses investments Reductions for increase in cash flows expected to be collected that are recognized over the remaining life of the security Amounts related to securities for which the company intends to sell or that it will be more likely than not that the company will be required to sell prior to recovery of amortized cost basis Other comprehensive income Unrealized holding gains on securities available for sale Other Other Noninterest Expense Other liabilities OREO - Other real estate owned gross Postretirement, Medical and Life [Member] Total, current period changes Total other comprehensive income Other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Change in funded status of defined benefit pension plan and other benefit plans Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax, Portion Attributable to Parent Net unrealized gains (losses) Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Unrealized loss on pension plans and other benefit Plans Net of tax amount Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent Less: Tax effect Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax, Portion Attributable to Parent Performing [Member] Recorded investment in loans past due Pass [Member] Loans originated and held for sale Payments for Origination and Purchases of Loans Held-for-sale Net increase in loans Payments for (Proceeds from) Loans and Leases Purchase of treasury stock Payments for Repurchase of Common Stock Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Purchases of securities available for sale Payments to Acquire Available-for-sale Securities Cash paid Fort Orange Financial Corporation acquisition Payments to Acquire Businesses, Gross Cash dividends paid Payments of Ordinary Dividends, Common Stock Purchase of Federal Home Loan Bank and Federal Reserve Bank stock Payments to Acquire Federal Reserve Stock Purchases of securities held to maturity Payments to Acquire Held-to-maturity Securities Qualified Pension [Member] Components of Quarterly and Year-to-Date Net Periodic Benefit Costs Pension and Other Postretirement Benefits Disclosure [Text Block] Pension and other employee benefits Pension and Other Postretirement Benefit Expense Net decrease in securities sold under agreements to repurchase Repayments of Federal Home Loan Bank long term advances Proceeds from maturities and principal collected on securities available for sale Proceeds from maturities and principal collected on securities held to maturity Proceeds from sales and calls of securities available for sale Proceeds from sales of loans held for sale Redemption of Federal Home Loan Bank and Federal Reserve Bank stock Proceeds from sales of other real estate owned Sale of treasury stock Proceeds from Sale of Treasury Stock Premises and equipment, net Provision Provision for loan losses Other real estate owned valuation allowance Receivable Type [Domain] Reportable segments and reconciliation to consolidated results [Abstract] Mortgage-backed securities, residential [Member] Mortgage-backed securities, residential [Member] Residential mortgages [Member] Residential Mortgages [Member] Restricted Stock [Member] Retained earnings Retained Earnings [Member] Substandard [Member] Schedule of expected amortization expense Salaries and wages Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Impaired Financing Receivable [Table] Summary of assets and liabilities measured at fair value on a recurring basis Components of net periodic benefit costs Summary of restricted stock activity Schedule of Available-for-sale Securities [Table] Schedule of Financing Receivable Past Due [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of acquired finite-lived intangible assets by major class Investment securities in an unrealized loss position Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of Available-for-sale Securities [Line Items] Components of accumulated other comprehensive income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of changes in goodwill Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-maturity Securities [Table] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Summarized financial information showing reconciliation of segment net income loss and assets to consolidated results Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Composition of the loan portfolio by type Securities sold under agreements to repurchase Securities Sold under Agreements to Repurchase Segment Reporting Information [Line Items] Segment Reporting [Abstract] Segment Reporting Segment Reporting Disclosure [Text Block] Segment [Domain] Summary of restricted stock activity [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Forfeited or Cancelled (in shares) Nonvested beginning balance (in dollars per share) Nonvested Ending Balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Vesting period for stock award granted Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Nonvested Beginning Balance (in shares) Nonvested Ending Balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Granted (in shares) Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Number of shares authorized under restricted stock plan (in shares) Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] Special Mention [Member] Statement [Table] Statement [Line Items] CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) [Abstract] CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) [Abstract] Statement, Business Segments [Axis] Statement Equity Components [Axis] Statement, Equity Components [Axis] CONSOLIDATED BALANCE SHEETS (UNAUDITED) [Abstract] CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) [Abstract] Issuance of shares related to FOFC Merger (in shares) Issuance of shares related to FOFC Merger Sale of shares of treasury stock Number of shares of treasury stock for employee compensation (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Distribution of shares of treasury stock for employee compensation Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Number of treasury stock shares sold (in shares) Stock Issued During Period, Shares, Treasury Stock Reissued Shareholders' equity: Shareholders' equity: Total shareholders' equity Balances Balances Stockholders' Equity Attributable to Parent Subsequent events Subsequent Events, Policy [Policy Text Block] Supplemental disclosure of cash flow information: Supplemental Pension [Member] Time Deposits Trading assets, at fair value Trading assets Trading Securities, Fair Value Disclosure Transfer of loans to other real estate owned Treasury stock, at cost (734,997 shares at September 30, 2012; 741,003 shares at December 31, 2011) Treasury Stock, Value Number of treasury stock shares purchased (in shares) Treasury Stock, Shares, Acquired Treasury stock, at cost (in shares) Treasury Stock [Member] Purchase of shares of treasury stock Treasury Stock, Value, Acquired, Cost Method Unallocated [Member] Obligations of U.S. Government and U.S. Government sponsored enterprises [Member] Obligations of U.S. Government and U.S. Government sponsored enterprises [Member] Obligations of states and political subdivisions [Member] Obligations of states and political subdivisions [Member] Weighted average shares outstanding (in shares) Weighted average number of shares outstanding (in shares) Reflects the amount of the paid off related to a troubled debt restructuring. Financing Receivables Troubled Debt Restructuring Paid Off Troubled debt restructuring paid off The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. Financing Receivable Modifications Recorded Investment For One Loan Troubled debt restructuring one loan amount modified Represents other adjustments on certain loans acquired in transfer not accounted for as debt securities contractually required payments receivable at fair value. Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Contractually Required Payments Receivable At Fair Value Other Adjustments Fair value of loans acquired with deteriorating credit quality, all other adjustments Represents other adjustments on certain loans acquired in transfer not accounted for as debt securities cash flows not expected to be collected. Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Other Adjustments Interest component of expected cash flows (accretable yield), all other adjustments Represents other adjustments on certain loans acquired in transfer not accounted for as debt securities cash flows expected to be collected. Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period Cash Flows Expected To Be Collected Other Adjustments Cash flows expected to be collected, all other adjustments Represents other adjustments on certain loans acquired in transfer not accounted for as debt securities cash flows not expected to be collected. Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Cash Flows Not Expected To Be Collected Other Adjustments Contractual cash flows not expected to be collected (nonaccretable discount), all other adjustments Represents other adjustments on certain loans acquired in transfer not accounted for as debt securities contractually required payments receivable. Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period Contractually Required Payments Receivable Other Adjustments Contractually required principal and interest, all other adjustments Represents income accretion on certain loans acquired in transfer not accounted for as debt securities contractually required payments receivable at fair value. Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Contractually Required Payments Receivable At Fair Value Income Accretion Fair value of loans acquired with deteriorating credit quality, income accretion Represents income accretion on certain loans acquired in transfer not accounted for as debt securities cash flows expected to be collected. Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Cash Flows Expected to be Collected Income Accretion Cash flows expected to be collected, income accretion Represents income accretion on certain loans acquired in transfer not accounted for as debt securities cash flows not expected to be collected. Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Cash Flows Not Expected to be collected Income Accretion Contractual cash flows not expected to be collected (nonaccretable discount), income accretion Represents income accretion on certain loans acquired in transfer not accounted for as debt securities contractually required payments receivable. Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Contractually Required Payments Receivable Income Accretion Contractually required principal and interest, income accretion The amount of finance receivable related to residential and consumer loans receivable.. Residential and consumer loans receivable Residential And Consumer Finance Receivable [Abstract] Residential and consumer finance receivable [Abstract] Finance Receivable By Credit Quality Indicator [Abstract] Finance receivable by credit quality indicator [Abstract] The balance of financing receivables that were acquired with deteriorated credit quality. Loans Acquired With Deteriorated Credit quality [Member] Loans Acquired with deteriorated credit quality [Member] A category of financing receivables that are not rated as pass, special mention, substandard, doubtful. Not Rated [Member] Refers to specific reserves to customers whose loan terms have been modified in troubled debt restructurings which are included in non-accrual loans. Troubled debt restructuring reserve A loan is considered to be in payment default once it is a specific number of days contractually past due. Number of days past due after which loan considered as payment default Number of days past due after which loan considered as payment default Following a troubled debt restructuring modification, the period in which no further default payments were made. Period after modification where no defaults payment made Period after troubled debt restructuring modification where no default payments made Trouble debt restructurings [Abstract] Financing Receivable Recorded Investment Non Accrual And Past Due [Abstract] Investment in non accrual and loans past due over 90 days [Abstract] Class of financing receivables related to agricultural financing receivables. Agricultural [Member] Class of financing receivables related to home equity lines and loans. Home equity lines and loans [Member] Home equity lines & loans [Member] Itemization of the various types of receivable . Loan And Financing Receivable [Domain] Loan and Financing Receivable [Domain] Recorded investment in financing receivables by classes of financing receivables. Loan And Financing Receivable [Axis] Loan and Financing Receivable [Axis] Class of financing receivables related to commercial and industrial financing receivables. Commercial and industrial [Member] Represents a subset of a class of financing receivables that have no related allowance recorded related to the impaired receivables. With no related allowance recorded [Member] Represents a subset of a class of financing receivables that have an allowance related to the impaired receivables. With Allowance Recorded [Member] Represents a subset of a class of financing receivables for related allowances status for impaired receivables. Impaired Financing Receivable Related Allowance status [Domain] Attributes of financing receivables classified as impaired with status of allowance related to the receivables by class of financing receivable. Impaired Financing Receivable Related Allowance Status [Axis] Financing Receivable Allowance For Finance Receivable Evaluated For Impairment [Abstract] Loans [Abstract] Financing Receivable Allowance For Credit Losses Individually And Collectively Evaluated For Impairment [Abstract] Ending allowance balance attributable to loans [Abstract] Financing Receivable Allowance For Credit Losses evaluated for impairment [Abstract] Allowance for loan losses [Abstract] A valuation allowance for financing receivables that are expected to be uncollectible net off charge off. Financing Receivable Allowance For Credit Losses net charge off Net recoveries (charge offs) Represents reclassification of accquired loan discount. Reclassification of Accquired Loan Discount Type of loan acquired under merger. Acquired Loans [Member] Type of loans originated by the entity. Legacy Loans [Member] Recorded investment in financing receivables by classes of financing receivables. Loans Receivable By Origin [Domain] Loans Receivable by Origin [Domain] Recorded investment in financing receivables by origin. Loans Receivable By Origin [Axis] Loans Receivable by Origin [Axis] Total period of history of net loss used for classifying loans. Period of history of net loss Period of historical loss factor for substandard classification, but not impaired Consumer loans obtained by a third party originator. Indirect consumer loans [Member] Indirect consumer loans [Member] Class of financing receivables related to commercial mortgage financing receivables. Commercial mortgages [Member] Commercial Mortgages [Member] This element represents the amount of commercial financial and agricultural loans receivable as of the balance sheet date. Commercial financial and agricultural [Member] Commercial, financial and agricultural [Member] Commercial, Financial and Agricultural [Member] Tabular disclosure of residential and consumer receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of residential and consumer receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics. Residential and Consumer Receivable Credit Quality Indicators [Table Text Block] Recorded investment in residential and consumer loans based on payment activity Tabular disclosure of Recorded investment in non accrual and loans past due but not impaired, financing receivables that are 90 days past due and still accruing, and financing receivables on nonaccrual status. Recorded investment in non accrual and loans past due [Table Text Block] Recorded investment in non accrual and loans past due Tabular disclosure for balance of financing receivables and allowances for credit losses that were evaluated for impairment. Financing Receivable And Allowance For Credit Losses Evaluated For Impairment [Table Text Block] Allowance for loan losses and the recorded investment in loans based on impairment method. Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan Share Based Compensation Arrangement By Share Based Payment Award Equity Instrument Other Than Options Forfeited In Period Weighted Average Grant Date Fair Value Forfeited or Cancelled (in dollars per share) Restricted stock activity Weighted Average Grant Date Fair Value [Abstract] Restricted Stock Activity Weighted-Average Grant Date Fair Value [Abstract] Restricted stock activity shares [Abstract] Restricted Stock Activity Shares [Abstract] Restricted Stock Plan [Abstract] Number of treasury shares (units) reissued during the period to fund stock component of director compensation. Number of tresury shares reissued to fund stock component of director compensation Number of treasury shares reissued to fund stock component of director compensation (in shares) Value of treasury stock issued during the period for directors' compensation. Distribution Of Shares Of Treasury Stock For Directors Compensation Value Stock Comp Distribution of shares of treasury stock for directors compensation value stock comp Period of service of a comparable group or grouping used in a determination to determine share based compensation awards. This period may be explicit or implicit based on the terms of the award, and may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year). Share Based Compensation Award Criteria Service Period Of Comparable Group Service period for comparable group used to determine share based payment awards Board of Director's Stock Compensation [Abstract] The registrant that hold or control directly or indirectly other entity. Holding company and other [Member] Holding Company and Other [Member] Wealth Management Group Services Wealth Management Group Services [Member] A component of an entity and all major revenue and assets of the company belongs to that component of entity. Core Banking [Member] Core Banking [Member] Number of primary business segments through which company manages its operations. Number of primary business segment This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which other than temporary impairment (OTTI) was previously recognized. Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions when Impairment recognized previously Increases to the amount related to the credit loss for which other-than-temporary impairment was previously recognized Additions /Subtractions [Abstract] Additions/Subtractions [Abstract] This item represents the excess of amortized cost basis over fair value of securities in a loss position and which are categorized as either held-to-maturity or available for sale securities. Available for sale and held to maturity Securities Continuous Unrealized Loss Position Aggregate Losses One Unrealized Losses This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized as either held-to-maturity or available for sale securities. Available For Sale and held to maturity Securities Continuous Unrealized Loss Position Fair Value Fair Value Total unrealized Losses [Abstract] Securities with continuous unrealized losses, Total [Abstract] This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for twelve months or longer for those securities which are categorized as either held-to-maturity or available for sale securities. Available for sale and held to maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Aggregate Losses1 12 months or longer - Unrealized Losses This item represents the aggregate fair value of investments in debt and equity securities categorized as either held-to-maturity available or available for sale that have been in a continuous unrealized loss position for twelve months or longer. Available For Sale Securities and held to maturity Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value 12 months or longer - Fair Value 12 months or longer Unrealized Losses [Abstract] Continuous unrealized loss securities, 12 months or more [Abstract] This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for less than twelve months for those securities which are categorized as either held-to-maturity or available for sale. Available for sale and held to maturity Securities Continuous Unrealized Loss Position Less Than twelve Months Aggregate Losses1 Less than 12 months - Unrealized Losses This item represents the aggregate fair value of investments in debt and equity securities categorized either as held-to-maturity or available-for-sale that have been in a continuous unrealized loss position for less than twelve months. Available For Sale and held to maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value Less than 12 months - Fair Value Less than 12 months continuous unrealized loss [Abstract] Continuous unrealized loss securities, 12 months or less [Abstract] Available For Sale and held to maturity Securities Continuous Unrealized Loss Position [Abstract] Available for sale and held to maturity securities continuous unrealized loss position [Abstract] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Schedule Of Available For Sale And Held To Maturity Securities [Line Items] Schedule of Available for Sale and Held to Maturity Securities [Line Items] Provide general categories of investments for which information is required or determined to be disclosed. Available For Sale Securities And Held To Maturity Major Types Of Debt And Equity Securities [Domain] Available for Sale Securities and Held to Maturity Major Types of Debt and Equity Securities [Domain] This element represents a number of concepts which capture the general categories of investments which may be classified as Available-for-sale and held to maturity. The information required and determined to be disclosed concerning Available-for-sale Securities may be organized in relation to these categories or to additional categories or specific debt and equity investments which are categorized as Available-for-sale and not otherwise captured by the categories provided. Schedule Of Available For Sale Securities and held to maturity Major Types Of Debt And Equity Securities [Axis] Schedule of Available for Sale Securities and Held to Maturity Major Types of Debt and Equity Securities [Axis] Table showing available-for-sale and held-to-maturity securities in continuous Unrealized loss position. Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position [Table] Available for Sale Securities and Held to Maturity Securities Continuous Unrealized Loss Position [Table] Held To MaturityF air Value [Abstract] Held To Maturity Fair Value [Abstract] held to maturity Amortized Cost [Abstract] Held to maturity Amortized Cost [Abstract] Available For Sale fair value [Abstract] Available for Sale, Fair Value [Abstract] Available for Sale amortized cost [Abstract] Available For Sale and held to maturity Securities Debt Maturities Amortized Cost and fair value [Abstract] Available for sale and held to maturity securities debt maturities amortized cost and fair value [Abstract] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Investment Classified By Contractual Maturity Date [Line Items] Schedule of maturities of an entity's investments as well as any other information pertinent to the investments. Investment Classified By Contractual Maturity Date [Table] Investment Classified by Contractual Maturity Date [Table] Held to maturity Securities, Amortized Cost and fair value Basis [Abstract] Held to maturity securities, amortized cost and fair value basis [Abstract] Credit quality used as component in assessing overall fair value of impaired securities. Credit quality as component in assessing fair value of impaired securities This item represents the gross unrealized losses for a specific security, at a point in time, after an analysis of collateralized debt obligations. Unrealized loss following analysis of security Unrealized losses on security Book value of securities representing investments in pooled trust preferred securities which are categorized neither as held-to-maturity nor trading, which are specifically analyzed for currently performing collateral. Book value of Pooled trust preferred security analyzed for currently performing collateral Book value of Pooled trust preferred security analyzed for currently performing collateral Information related to the pooled trust preferred security [Abstract] Information related to the pooled trust preferred security [Abstract] Number of pooled trust preferred securities. Number of pooled trust preferred securities Other than temporary impairment [Abstract] Other than temporary impairment [Abstract] Available For Sale Securities Amortized Cost Basis and fair value [Abstract] Available for sale securities amortized cost and fair value basis [Abstract] Specific issuance of preferred securities that embody an unconditional obligation requiring the issuer to redeem the securities by transferring the assets at a specified or determinable date (or dates) or upon an event that is certain to occur, that are issued by a consolidated trust to outside investors where the trust uses the proceeds of the issuance of those securities to purchase, from the financial institution that established the trust, an equivalent amount of junior subordinated debentures or other loans having stated maturities. TPREF Funding II, Ltd. (Class B) [Member] Preferred securities, that are issued by a consolidated trust to outside investors where the trust uses the proceeds of the issuance of those securities to purchase, from the financial institution that established the trust, an equivalent amount of junior subordinated debentures or other loans having stated maturities. Trust Preferred securities [Member] This category includes information about securities related to loan pools of the Small Business Administration (SBA loan pools). SBA loan pools [Member] Accumulated Other Comprehensive Income or Loss. Accumulated Other Comprehensive Income or Loss [Abstract] The amount of money in accounts that may bear interest and that the depositor is entitled to withdraw at any time without prior notice. Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs). Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts. Demand savings and insured money market accounts Demand, savings, and insured money market accounts Refers to the Trading Assets of Fair value. Trading assets Trading assets Net carrying value of OREO at balance sheet date. Other real estate owned carrying value net OREO - Other real estate owned carrying value, net Carrying value of impaired loan measured for impairment using the fair value of the collateral for collateral. Carrying amount of impaired loans Carrying amount of impaired loans Additional provision charged for the period based on estimated losses to be realized from loan and lease transactions. Additional Provision For Loan And Lease Losses Additional provision for loan and lease Losses 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 other real estate owned presented on the statement of financial position which is owned by the Company as of the balance sheet date. other real estate owned fair value disclosure Other real estate owned, net Refers to Home equity lines & loans Home equity lines & loans Refers to Consumer loans Consumer loans: [Abstract] Consumer loans: 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 loan receivable as presented on the statement of financial position, for the commercial mortgages loans not other wise disclosed which are due the Company as of the balance sheet date. Commercial Mortgage Loans Other, Fair Value Disclosure 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 loan receivable as presented on the statement of financial position, for the commercial mortgages loans in the Residential mortgages sector which are due the Company as of the balance sheet date. Commercial Mortgage Loans, Residential mortgages, Fair Value Commercial Mortgage Loans, Residential mortgages, Fair Value 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 loan receivable as presented on the statement of financial position, for the commercial mortgages sector which are due the Company as of the balance sheet date. Commercial mortgages Loans, fair value disclosure 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 loan receivable as presented on the statement of financial position, for the commercial and industrial sector which are due the Company as of the balance sheet date. Commercial and industrial Loans, fair value disclosure Impaired Loans [Abstract] Fair Value Assets And Liabilities Measured On Non Recurring Basis [Abstract] Fair value assets and liabilities measured on non recurring basis [Abstract] This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in impairment charge on investment securities or resulted in a change in net asset value. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings in impairment charge on investment securities Impairment charge on investment securities This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in Income on securities or resulted in a change in net asset value. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings in income on securities Income on securities Included in earnings [Abstract] Included in earnings [Abstract] realized and unrealized gains losses [Abstract] Total gains/losses (realized/unrealized) [Abstract] 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 corporate stocks as of the balance sheet date which have been categorized as available-for-sale. Corporate stocks, Fair Value Disclosure Corporate stocks 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 small business administration pool loans as of the balance sheet date which have been categorized as available-for-sale. Small Business Administration Pool Loans, Fair ValueDisclosure SBA loan pools 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 collateralized mortgage obligations, as of the balance sheet date which have been categorized as available-for-sale. Collateralized mortgage obligations, Fair Value Disclosure Collateralized mortgage obligations 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 corporate bonds and notes as of the balance sheet date which have been categorized as available-for-sale. Corporate bonds and notes, fair value disclosure Corporate bonds and notes 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 trust preferred securities as of the balance sheet date which have been categorized as available-for-sale. Trust preferred securities, Fair Value Disclosure Trust Preferred securities 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 obligations of states and political subdivisions as of the balance sheet date which have been categorized as available-for-sale. Obligations of states and political subdivisions, Fair Value Disclosure Obligations of states and political subdivisions 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 investments in Obligations of U.S. Government and U.S. Government sponsored enterprises as of the balance sheet date which have been categorized as available-for-sale. Obligations of U.S. Government and U.S. Government sponsored enterprises, Fair Value Disclosure Obligations of U.S. Government and U.S. Government sponsored enterprises Fair Value By Grouping Methodology Financial Assets [Abstract] Financial Assets [Abstract] Refers to the Other real estate owned member. Other real esteate owned [Member] Refers to the Impaired loans member. Impaired Loans [Member] Impaired Loans [Member] This item represents the amount of assets or liabilities, including [financial] instruments that are classified in stockholders' equity, which are measured at fair value on either a recurring or nonrecurring basis and fall within three level of the fair value. Number of levels Basis of Presentation [Abstract] Cash Paid During Year For [Abstract] Cash paid during the year for: The noncash expense that represents the cost of stock awards distributed to employees. Expense Related To Employee Stock Awards Expense related to employee stock awards The noncash expense that represents the cost of stock distributed to employees as compensation. Expense Related To Employee Stock Compensation Expense related to employee stock compensation The noncash expense that represents the cost of restricted stock distributed to Directors as compensation. Restricted Stock Expense Directors Deferred Compensation Plan Expense related to restricted stock units for directors' deferred compensation plan Adjustments to prepaid FDIC assessments Decrease (increase) in prepaid FDIC assessment Decrease (increase) in prepaid FDIC assessment Cash outflow associated with the purchase of trading assets. Purchase of trading assets Purchase of trading assets Cash inflow associated with the sale of trading assets. Proceeds from sale on trading assets Proceeds from sales of trading assets Number of shares of treasury stock issued during the period for employee restricted stock awards. Distribution Of Treasury Stock For Employee Restricted Stock Awards Shares Number shares of treasury stock for employee restricted stock awards (in shares) Number of treasury shares issued during the period for directors' deferred compensation. Distribution Of Shares Of Treasury Stock For Directors Deferred Compensation Shares Number shares of treasury stock for deferred director's compensation (in shares) Number of treasury shares issued during the period for directors' compensation. Distribution Of Shares Of Treasury Stock For Directors Compensation Shares Number of shares of treasury stock distributed for director's compensation ( in shares) Value of treasury stock issued during the period for employee restricted stock warrants. Distribution Share Of Treasury Stock For Employee Restricted Stock Warrants Distribution of shares of treasury stock for employee restricted stock awards Value of treasury stock issued during the period for directors' deferred compensation. Distribution Of Shares Of Treasury Stock For Directors Deferred Compensation Value Distribution of shares of treasury stock for deferred director's compensation Value of treasury stock issued during the period for directors' compensation. Distribution Of Shares Of Treasury Stock For Directors Compensation Value Distribution of shares of treasury stock for directors' compensation Increase and decrease in value of stock units to be issued in the future. Restricted Stock Units For Directors Deferrred Compensation Plan Restricted stock units for directors' deferred compensation plan Net OTTI losses recognized in earnings. Net Otti Losses Recognized In Earnings Net impairment loss recognized in earnings Portion of OTTI losses recognized in other comprehensive income (before taxes). Portion Of Otti Losses Recognized In Other Comprehensive Income Before Taxes Loss recognized in other comprehensive income Total other-than-temporary impairment ('OTTI') losses. Total Other Than Temporary Impairment Otti Losses Total impairment losses Other Than Temporary Loss On Investment Securities [Abstract] Other-than-temporary loss on investment securities: The loss resulting from sales and other disposals of other real estate owned, increases and decreases in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession. Losses On Sales Of Other Real Estate Losses on sales of other real estate owned The gains resulting from sales and other disposals of other real estate owned, increases and decreases in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession. Gains On Sales Of Other Real Estate Gains on sales of other real estate owned Represents the financial gain of property claims arising from a sudden and unexpected event such as an accident. Casualty Gain Casualty gains Federal Reserve Bank stock represents an equity interest in the Federal Reserve Bank and Federal Home Loan Bank (FHLB) stock represents an equity interest in in a FHLB. They do not have a readily determinable fair values because ownership is restricted and it lacks a market (liquidity). Federal Home Loan Bank And Federal Reserve Bank Stock At Cost Federal Home Loan Bank and Federal Reserve Bank Stock, at cost Federal Home Loan and Federal Reserve Bank Stock Document and Entity Information [Abstract]