Amortization (accretion) of security premiums, net Accretion (Amortization) of Discounts and Premiums, Investments Accumulated other comprehensive income (loss), net Unrealized gain (loss) on interest rate swap, net of tax effect Unrealized Gain (Loss) on Derivatives Federal Home Loan Bank advances Advances from Federal Home Loan Banks Consolidated Balance Sheets [Abstract] Unrealized gain (loss) on securities available for sale, net of tax effect Bank-owned life insurance Earnings per Share , basic (in dollars per share) Brokerage income Brokerage Commissions Revenue Beginning Ending Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents Cash and due from banks Interest Changes in assets and liabilities: Commitments and Contingent Liabilities Commitments and Contingencies Disclosure [Text Block] Common stock, authorized (in shares) Common stock, issued (in shares) Common stock, outstanding (in shares) Common stock, par value, $3.13; authorized 8,000,000 shares; issued and outstanding: 2011: 3,669,758 shares including 32,572 nonvested shares: 2010: 3,636,758 shares including 33,772 nonvested shares Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Capital Requirements [Abstract] Concentration Risk Concentration Risk Disclosure [Text Block] Parent Corporation Only Financial Statements Condensed Financial Information of Parent Company Only Disclosure [Text Block] Deferred tax benefit Deposits Deposit Liabilities Disclosures [Text Block] Total deposits Deposits Deposits: Deposits [Abstract] Total interest-bearing Interest-bearing Deposit Liabilities Interest-bearing: Noninterest-bearing NOW accounts Savings and money market accounts Depreciation and amortization Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Capital Requirements Regulatory Capital Requirements under Banking Regulations [Text Block] Earnings per Share , assuming dilution (in dollars per share) Earnings Per Share, Diluted Dividend Limitations on Affiliate Bank [Abstract] Amortization of unearned compensation, net of forfeiture Federal funds sold Federal Home Loan Bank Advances and Other Borrowings Federal Home Loan Bank Advances, Disclosure [Text Block] Disposal of obsolete assets fixed assets Gain (Loss) on Disposition of Assets Consolidated Statements of Income [Abstract] Income Taxes Income Tax Disclosure [Text Block] Income taxes Decrease(increase) in other assets Increase (Decrease) in Other Operating Assets Interest-bearing deposits in other banks Total interest expense Interest Expense Interest Expense Interest Expense [Abstract] Interest on deposits Interest on federal funds purchased Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss Interest on federal funds sold Interest on deposits in other banks Interest income exempt from federal income taxes Taxable interest income Interest and dividends on securities available for sale: Accrued interest receivable Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Salaries and benefits Total liabilities Liabilities Total liabilities and shareholders' equity Liabilities and Equity Liabilities and Shareholders' Equity Interest and fees on loans Loans Securities available for sale, net Marketing expense Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Cash Flows from Financing Activities Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Cash Flows from Investing Activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash Flows from Operating Activities Net decrease (increase) in loans Payments for (Proceeds from) Loans and Leases Net (decrease) increase in certificates of deposit Net Income Net income Net income Increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Net interest income Interest Income (Expense), Net Allowance for loan losses Loans and Leases Receivable, Allowance Net loans Loans and Leases Receivable, Net Reported Amount Federal Deposit Insurance Corporation expense Occupancy expense of premises Other operating expenses Total other income Noninterest Income Other Income Noninterest Income [Abstract] Trust and estate income Fees and Commissions, Fiduciary and Trust Activities Gain on sale of securities (Gain) on sale and call of securities Other service charges, commissions and income Fees and Commissions, Other Service charges on deposit accounts Fees and Commissions, Depositor Accounts Dividends Dividend Income, Operating Total interest income Interest and Dividend Income, Operating Interest Income Add: change in beneficial obligation for defined benefit and SERP plans, net of deferred tax Changes in benefit obligations and plan assets for defined benefit and post-retirement benefit plans, net of tax effect Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized (Gain) Loss Arising During Period, Net of Tax Change in beneficial obligation for defined benefit and SERP plans, tax Interest rate swap (cash flow hedge), net of tax benefit Other comprehensive income net of tax: Other comprehensive income (loss) net of tax Other Comprehensive Income (Loss), Net of Tax Gain on sale or call of securities available for sale, tax Other comprehensive income (loss), tax Unrealized holding gains (losses) on securities available for sale, net of deferred tax benefit Unrealized holding losses on securities available for sale, tax benefit Other liabilities Cash dividends paid on common stock Payments of Dividends, Common Stock Federal Home Loan Bank principal repayments Repayments of Federal Home Loan Bank Borrowings Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Federal Home Loan Bank advances Issuance of common stock Proceeds from maturities, calls and principal payments of securities available for sale Proceeds from sale of securities available for sale Proceeds from sale of other real estate owned Bank premises and equipment, net Bank Premises and Equipment, Net [Abstract] Provision for loan losses Purchase of securities available for sale Payments to Acquire Available-for-sale Securities Purchase of premises and equipment Payments to Acquire Property, Plant, and Equipment Related Party Transactions Related Party Transactions Disclosure [Text Block] Restricted investments Dividend Limitations on Affiliate Bank Restrictions on Dividends, Loans and Advances [Text Block] Retained earnings Consolidated Statements of Cash Flows [Abstract] Consolidated Statements of Changes in Shareholders' Equity [Abstract] Shareholders' Equity Supplemental Disclosures of Cash Flow Information Total other expenses Noninterest Expense Other Expenses Noninterest Expense [Abstract] Common Stock [Member] Bank Premises and Equipment, Net Property, Plant and Equipment Disclosure [Text Block] Total assets Assets Dividends per Share (in dollars per share) Cash dividends (in dollars per share) Equity Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Statement [Table] Assets Assets [Abstract] Statement [Line Items] Concentration Risk [Abstract] Fair Value Measurement Fair Value Disclosures [Text Block] Increase (Decrease) in Stockholders' Equity [Roll Forward] Earnings Per Share [Abstract] Increase(decrease) in other liabilities Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Common stock, par value (in dollars per share) Less: gain on sale or call of securities available for sale, net of tax Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax Interest rate swap (cash flow hedge), tax Total shareholders' equity Balance Balance Stockholders' Equity Attributable to Parent Income tax expense Furniture and equipment Comprehensive income: Time deposits Tax benefit of nonqualified options exercised Statement, Equity Components [Axis] Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) [Member] Equity Component [Domain] Data processing expense Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Comprehensive Income [Member] Total other-than-temporary impairment losses on securities Marketable Securities, Realized Loss, Other than Temporary Impairments, Amount Earnings Per Share Earnings Per Share [Text Block] Commitments and contingencies Cash dividends Dividends, Common Stock, Cash Adjustments to reconcile net income to net cash provided by operating activities: Amortization of unearned compensation, restricted stock awards Nature of Banking Activities and Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Other assets Commitments and Contingent Liabilities [Abstract] Income Taxes [Abstract] Parent Corporation Only Financial Statements [Abstract] Subsequent Event Subsequent Events [Text Block] Equity Compensation [Abstract] Nature of Banking Activities and Significant Accounting Policies [Abstract] Related Party Transactions [Abstract] Subsequent Event [Abstract] Foreclosed assets acquired in settlement of loans Supplemental Disclosures of Noncash Investing Activities Net other-than-temporary impairment losses on securities Loss on impairment of securities Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net Less: Portion of gain/(loss) recognized in other comprehensive income before taxes Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Amendment Flag Current Fiscal Year End Date Document Period End Date Entity [Text Block] Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Registrant Name Entity Central Index Key Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Document Type Other Real Estate Owned Carrying amount as of the balance sheet date of other real estate owned net of valuation allowance. Other real estate owned, net of allowance Trust Preferred Securities Amount of floating rate capital debt held by the company that have 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. The debt was issued by a business 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. Company-obligated mandatorily redeemable capital securities Common Stock Shares Non Vested Total number of shares of common stock held by shareholders that are nonvested. May be all or portion of the number of common shares issued. Does not include common shares that have been repurchased. Common stock, nonvested (in shares) Distribution On Capital Securities Of Subsidiary Trusts Total interest expense on capital securities, net of interest rate swap. Distribution on capital securities of subsidiary trusts Legal Audit And Consulting Expense A fee charged for services from professionals such as lawyers, accountants and consultants. The term is often expanded to include other providers of outsourced services. Legal, audit and consulting expense Interest Expense Federal Home Loan Bank Interest expense incurred during the reporting period on borrowings associated with Federal Home Loan Bank Interest on Federal Home Loan Bank advances Gain Loss On Sale Or Impairment Of Other Real Estate Owned The net gain or 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 or the charge against earnings in the period to reduce the carrying amount of real property to fair value. Loss on sale or impairment and expense of other real estate owned Other Comprehensive Income Reclassification Adjustment For Other Than Temporary Impairments Net Of Tax Reclassification adjustment for other than temporary impairment, after tax. Add: reclassification adjustments for other-than-temporary impairment, net of tax Add: reclassification adjustments for other-than-temporary impairment, net of tax Other Comprehensive Income Reclassification Adjustment For Other Than Temporary Impairments Tax Tax effect of the reclassification adjustment for the other than temporary impairment during the period being reported. Reclassification adjustments for other than temporary impairment, tax Issuance Of Common Stock Non Vested Shares Number of nonvested common shares issued during the period. Issuance of common stock - nonvested shares (in shares) Issuance Of Common Stock Vested Shares Number of vested common shares issued during the period. Issuance of common stock - vested shares (in shares) Cash payments for: [Abstract] Cash payments for: Losses Gain On Sales Of Other Real Estate And Other Real Estate Impairment Charges The charge against earnings in the period to reduce the carrying amount of real property to fair value. Also includes the net gain or 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. Loss on sale or impairment of other real estate Net Increase Decrease In Non Time Deposits The net cash inflow (outflow) of all non-time deposits. Net increase in demand deposits, NOW accounts and savings accounts Securities [Abstract] Loans and Allowance for Loan Losses [Text Block] This item represents disclosures related to the entity's loan portfolio and describes and quantifies the loan loss provision and calculations that were reported in the period or disclosed as of the balance sheet date. Loans and Allowance for Loan Losses Loans and Allowance for Loan Losses [Abstract] Employee Benefit Plan [Abstract] Employee Benefit Plans [Abstract] Derivative Instruments and Hedging Activities [Abstract] Fair Value Measurement [Abstract] Issuance of common stock nonvested value The par value of restricted nonvested shares fully amortized during the period. Issuance of common stock - nonvested shares Issuance Of Common Stock Vested Value Value of vested shares issued during the period. Issuance of common stock - vested shares Payments For Proceeds From Other Bank Stock The net cash outflow or inflow of other bank stock during the period. (Purchase of) proceeds from redemption of other bank stock Repayments Of Federal Funds The cash outflow for the payment of the fund borrowed from other financial institution arising from the insufficient reserve deposited at Federal Reserve Bank to meet legal requirement. This borrowing is usually contracted on an overnight basis at an agreed rate of interest. Repayment of federal funds Dividend Reinvestment And Stock Purchase Plan [Abstract] Dividend Reinvestment and Stock Purchase Plan [Abstract] Dividend Reinvestment And Stock Purchase Plan [Text Block] The entire disclosure for the dividend reinvestment and stock purchase plan. Dividend Reinvestment and Stock Purchase Plan Federal Home Loan Bank Advances And Other Borrowings [Abstract] Federal Home Loan Bank Advances and Other Borrowings [Abstract] Financial Instruments With Off-Balance-Sheet Risk [Text Block] The entire disclosure for the financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined) which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. Financial Instruments With Off-Balance-Sheet Risk Financial Instruments With Off-Balance-Sheet Risk [Abstract] Other Operating Costs And Expenses [Text Block] The entire disclosure for other operating costs and expenses that are applicable to sales and revenues, but not included in the cost of sales in the income statement. Other Operating Expenses Other Operating Expenses [Abstract] Company- Obligated Mandatorily Redeemable Capital Securities [Abstract] Company-Obligated Mandatorily Redeemable Capital Securities [Abstract] Company-Obligated Mandatorily Redeemable Capital Securities [Text Block] The element may be used to describe the mandatorily redeemable securities, including the description and the details of all terms for each outstanding financial instrument and each settlement option as of the balance sheet date. Company-Obligated Mandatorily Redeemable Capital Securities