Document and Entity Information [Abstract] Federal Reserve and FHLB stock at cost Federal Reserve Bank stock represents an equity interest in the Federal Reserve Bank. Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. Neither stock has a readily determinable fair value because its ownership is restricted and it lacks a market (liquity). Interchange income Interchange income earned from credit cards, ATM and debit card transactions, net of cash back rewards expense on credit cards. Net gain on sales and writedowns of other real estate and repossessions Net gain on sales and writedowns of other real estate and repossessions The net gain or loss on sale of foreclosed property or repossessions. In addition the net writedown or write up of the foreclosed property or repossessions. Proceeds from sales of other real estate and repossessions Proceeds from sales of other real estate and repossessions Proceeds received from sale of other real estate owned due to foreclosures and proceeds from sale of repossessed property. Commitments and Contingencies [Abstract] Fair Value [Abstract] Non performing assets Expense reconized on classified loans (appraisals, title insurance). The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write downs of other real estate owned after acquistion or physical possession. Loan balances transferred to foreclosed real estate Value of property moved into other real estate owned due to foreclosures of property. Loan balances transferred to foreclosed real estate Increasedecreaseinotheroperatingassetsandliabilitiesnetabstract Changes in assets and liabilities: Loans And Allowance For Loan Losses [Text Block] Loans And Allowance For Loan Losses Includes loan, allowance for loan loss, impaired loans and troubled debt restructure disclosures. Loans And Allowance For Loan Losses [Abstract] Loans Mortgage Servicingtext Block Mortgage Servicing Mortgage bank activity related to mortgage servicing activity and escrow balances. Mortgage Servicing [Abstract] Net accretion of discounts and amortization of premiums on investments Net accretion of discounts and amortization of premiums on investments Accumulated other comprehensive income Additional paid in capital Board Stock Compensation Consolidated Balance Sheets [Abstract] Net unrealized gain on investments, net of tax Bank owned life insurance Basic earnings per share Cash and cash equivalents at beginning of year Cash and cash equivalents at beginning of year [Label_125] Cash and cash equivalents at beginning of year Cash and cash equivalents at end of year Cash and due from banks Total cash and cash equivalents Total cash and cash equivalents Interest paid Accrued interest receivable Accrued interest receivable [Label_101] Net decrease in short term borrowings Commitments and Contingencies Common stock, shares authorized Common stock, shares issued Common stock, no par value - authorized 15,000,000 shares issued 2,882,542 shares at June 30, 2011 and 2,866,641 shares at December 31, 2010 Total comprehensive income Other Comprehensive Income Deferred Income Tax Expense Benefit Net increase in deferred income taxes Deferred tax asset Total deposits Total deposits Money market and savings deposits Depreciation and amortization Diluted earnings per share Compensation expense related to restricted stock and options Stock Based Compensation [Abstract] Federal funds sold Consolidated Statements of Income Income taxes paid Other assets Other assets Interest bearing due from banks Total interest expense [Label_57] Total interest expense Interest expense: Interest on deposits Interest on other short term borrowings Interest on short term debt Net interest income after provision for loan losses [Label_60] Net interest income after provision for loan losses Interest on federal funds sold Interest on due from banks Interest on investment securities nontaxable Interest on investment securities taxable Accrued interest Investment Securities [Abstract] Salaries, wages and employee benefits Total liabilities Total liabilities Total liabilities and shareholders' equity Total liabilities and shareholders' equity Liabilities and shareholders' equity Interest and fees on loans Loans Interest on long term debt Fair value adjustment on mortgage servicing rights Total investment securities Total investment securities Investment securities 1 Investment securities Held-to-maturity securities (Fair value of $120,384 at June 30, 2011 and $117,302 at December 31, 2010) Loans held for sale Net cash provided (used) by financing activities Net cash provided (used) by financing activities Financing Activities Net cash used by investing activities Net cash provided (used) by investing activities Investing Activities Net Cash Provided By Used In Operating Activities Net cash provided by operating activities Operating Activities Net change in revolving line of credit Net increase (decrease ) in deposits Net increase in loans [Label_112] Net increase in loans Real Estate Owned [Abstract] Gain on sale of loans Gain on sale of loans Net Income Net income Net income Increase in cash and cash equivalents Increase (decrease) in cash and cash equivalents Net interest income [Label_58] Net interest income Less: Allowance for loan losses Less: Allowance for loan losses Net loans Net loans Adoption of New Accounting Standards [Abstract] Adoption of New Accounting Standards Noninterest-bearing demand deposits Business development FDIC Insurance Occupancy Other 1 Other Total other operating income [Label_69] Total other operating income Other operating income: Net increase in bank owned life insurance Net increase in bank owned life insurance Wealth management fees Mortgage banking income Net loss on sale of securities Other Service charges and fees on deposit accounts Professional services Total interest income [Label_51] Total interest income Interest income: Basis of Presentation Other comprehensive income Other liabilities 1 Other liabilities Origination of loans held for sale [Label_89] Origination of loans held for sale Preferred stock, shares authorized Proceeds from issuance of stock Proceeds from maturities of investment securities available for sale Proceeds from maturities of investment securities held to maturity Proceeds from sales of investment securities held to maturity Proceeds from sale of loans Premises and equipment Provision for loan losses Purchases of investment securities available for sale [Label_111] Purchases of investment securities available for sale Purchases of investment securities held to maturity [Label_110] Purchases of investment securities held to maturity Purchases of bank premises and equipment [Label_114] Purchases of bank premises and equipment Real Estate Owned Rental income Repurchase of stock Repurchase of stock 1 Retained earnings Consolidated Statements of Cash Flows Consolidated Statement of Shareholders' Equity Shareholders' equity: Subordinated debt Supplemental cash flow information Held to maturity investments transferred to available for sale investments Income tax benefit from deferred stock compensation Income tax benefit from deferred stock compensation 1 Total other operating expenses Total other operating expenses Other operating expenses: Treasury Stock Common Stock Available-for-sale securities Held-to-maturity securities, fair value Total assets Total assets Stock Based Compensation Statement [Table] Assets Statement [Line Items] Fair Value Treasury stock, at cost; 573,251 shares at June 30, 2011 and 548,891 shares at December 31, 2010 Treasury stock, at cost; 573,251 shares at June 30, 2011 and 548,891 shares at December 31, 2010 Comprehensive income: Supplemental non cash disclosure Excess tax benefit from deferred stock compensation [Label_97] Excess tax benefit from deferred stock compensation Earnings per Share [Abstract] Other liabilities Basis of Presentation [Abstract] Income before tax Income before tax Treasury stock, shares Tax on net unrealized gain (loss) on investments Other Comprehensive Income [Abstract] Repurchase agreements and other secured short term borrowings Total of all Stockholders' Equity Beginning Balance Ending Balance Total shareholders' equity Federal and state income tax Loss on sales of investment securities Loss on sales of investment securities Short term debt Preferred stock, no par value - authorized 5,000,000 shares Furniture and equipment Time deposits Proceeds from sale of residential mortgage loans Reverse repurchase agreements Statement, Equity Components [Axis] Additional Paid In Capital Retained Earnings Accumulated Other Comprehensive Income Equity Component [Domain] Loan balances transferred to loans held for sale Junior subordinated debentures owed to unconsolidated subsidiary trust Other real estate owned Data processing Issuance of stock under stock-based compensation plans Common stock issued under stock-based compensation plans Common stock repurchased Repurchase of stock Income tax benefit from deferred stock compensation Earnings per Share Investment Securities Other assets Other assets 1 Adjustments to reconcile net income to net cash provided (used) by operating activities: Stock based compensation earned Stock based compensation earned 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 Public Float Entity Registrant Name Entity Central Index Key Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Document Type