Amortization of premiums on securities, net Accretion (Amortization) of Discounts and Premiums, Investments Accumulated other comprehensive income Additional-paid-in capital Depreciation and amortization of fixed assets Amortization of intangible assets CONSOLIDATED BALANCE SHEETS (Unaudited) [Abstract] Bank owned life insurance Basic and diluted earnings per share Cash received Fort Orange Financial Corp. acquisition 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 and due from financial institutions Interest Cash paid Fort Orange Financial Corp. acquisition Payments to Acquire Businesses, Gross Decrease in accrued interest payable Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Common stock, shares authorized (in shares) Common stock, shares issued (in shares) Common stock, $.01 par value per share, 10,000,000 shares authorized; 5,310,076 issued at September 30, 2011 and 4,300,134 issued at December 31, 2010 Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Total deposits Deposits Deposits: Interest-bearing Non-interest-bearing Federal Home Loan Bank term advances Net impairment loss recognized on investment securities CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract] Decrease in other assets Increase (Decrease) in Other Operating Assets Other intangible assets, net Goodwill Interest-bearing deposits in other financial institutions Total interest expense Interest Expense INTEREST EXPENSE Borrowed funds Interest Expense, Borrowings Deposits Interest Expense, Deposits Securities sold under agreements to repurchase Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss Interest-bearing deposits Tax exempt securities Taxable securities Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Total liabilities Liabilities Total liabilities and shareholders' equity Liabilities and Equity LIABILITIES AND SHAREHOLDERS' EQUITY Loans held for sale Loans Receivable Held-for-sale, Net Loans, including fees Loans, net of deferred origination fees and costs, and unearned income Securities available for sale, at estimated fair value Securities held to maturity, estimated fair value of $8,483,553 at September 30, 2011 and $8,297,392 at December 31, 2010 Net cash provided (used) by financing activities Net Cash Provided by (Used in) Financing Activities CASH FLOWS FROM FINANCING ACTIVITIES: Net cash provided (used) by 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 increase in demand deposits, NOW accounts, savings accounts, and insured money market accounts Net (increase) decrease in loans Payments for (Proceeds from) Loans and Leases Net decrease in Federal Home Loan Bank long term advances Net decrease in securities sold under agreements to repurchase Net decrease in time deposits and individual retirement accounts Net income Net income Net 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 Loans, net Loans and Leases Receivable, Net Reported Amount FDIC insurance Net occupancy expenses Other Other Noninterest Expense Total other operating income Noninterest Income Other operating income: Income from bank owned life insurance Income from bank owned life insurance Bank Owned Life Insurance Income Wealth management group fee income Credit card merchant earnings Net gain on sale of other real estate owned Gains (Losses) on Sales of Other Real Estate Net gain on securities transactions Net gains on securities transactions Gain (Loss) on Sale of Securities, Net Net gain on sales of loans held for sale Gains on sales of loans held for sale, net Gain (Loss) on Sales of Loans, Net Other Noninterest Income, Other Operating Income Service charges on deposit accounts Other real estate owned expenses Total interest and dividend income Interest and Dividend Income, Operating INTEREST AND DIVIDEND INCOME Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Loans originated and held for sale Payments for Origination and Purchases of Loans Held-for-sale Change in funded status of Employers' Accounting for Defined Benefit Pension and Other Benefit Plans, net Comprehensive Income: Change in unrealized gains (losses) on securities AFS, net Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Other liabilities Cash dividends paid Payments of Dividends, Common Stock Components of Quarterly and Year-to-Date Net Periodic Benefit Costs Pension and Other Postretirement Benefits Disclosure [Text Block] Proceeds from maturities and principal collected on securities available for sale Sale of treasury stock 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 Proceeds from sale of other real estate owned Premises and equipment, net Provision for loan losses Purchases of securities available for sale Payments to Acquire Available-for-sale Securities 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 Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Loans and Allowance for Loan Losses Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Purchase of treasury stock Payments for Repurchase of Common Stock Retained earnings Redemption of Federal Home Loan Bank and Federal Reserve Bank stock Segment Reporting Segment Reporting Disclosure [Text Block] CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) [Abstract] CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME (Unaudited) [Abstract] Shareholders' equity: Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Supplemental disclosure of cash flow information: Income Taxes Total other operating expenses Noninterest Expense Other operating expenses: Treasury Stock [Member] Sale of shares of treasury stock, (in shares) Sale of shares of treasury stock Weighted average shares outstanding Common Stock [Member] Securities held to maturity, fair value Total assets Assets Cash dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Stock Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Statement [Table] ASSETS Assets: Statement [Line Items] Fair Value Fair Value Disclosures [Text Block] Treasury stock, at cost (742,518 shares at September 30, 2011; 749,880 shares at December 31, 2010) Treasury Stock, Value Earnings Per Common Share [Abstract] Decrease in other liabilities Income before income tax expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Common stock, par value (in dollars per share) Treasury stock, at cost (in shares) Securities sold under agreements to repurchase Securities Sold under Agreements to Repurchase Total shareholders' equity Balances Balances Stockholders' Equity Attributable to Parent Income tax expense Furniture and equipment expenses Statement Equity Components [Axis] Additional paid-in Capital [Member] Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) [Member] Equity Component [Domain] Data processing expense Distribution of shares of treasury stock for employee compensation Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Issuance of shares related to FOFC Merger Distribution of shares of treasury stock for employee compensation, (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Issuance of shares related to FOFC Merger (in shares) Purchase of shares of treasury stock, (in shares) Treasury Stock, Shares, Acquired Supplemental disclosure of non-cash activity: Purchase of shares of treasury stock Treasury Stock, Value, Acquired, Cost Method Earnings Per Common Share Earnings Per Share [Text Block] Merger related expenses Cash dividends declared Adjustments to reconcile net income to net cash provided by operating activities: Dividends payable Accrued interest payable Other assets Business Combinations [Abstract] Restricted stock awards Segment Reporting [Abstract] Transfer of loans to other real estate owned 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 Business Combinations [Text Block] OPEN ITEM Business Combinations Goodwill and Intangible Assets [Abstract] Fair Value [Abstract] Basis of Presentation [Abstract] Distribution Of Shares Of Treasury Stock For Directors Compensation Shares Number of treasury shares issued during the period for directors' compensation. Distribution of shares of treasury stock for directors' compensation, (in shares) Distribution Of Shares Of Treasury Stock For Directors Deferred Compensation Shares Number of treasury shares issued during the period for directors' deferred compensation. Distribution of shares of treasury stock for director's deferred compensation, (in shares) Distribution Of Treasury Stock For Employee Restricted Stock Warrants Shares Number of treasury stock issued during the period for employee restricted stock warrants. Distribution of shares of treasury stock for employee restricted stock warrants (in shares) Distribution Of Shares Of Treasury Stock For Directors Deferred Compensation Value Value of treasury stock issued during the period for directors' deferred compensation. Distribution of shares of treasury stock for director's deferred compensation Distribution Share Of Treasury Stock For Employee Restricted Stock Warrants Value of treasury stock issued during the period for employee restricted stock warrants. Distribution of shares of treasury stock for employee restricted stock warrants Federal Home Loan Bank And Federal Reserve Bank Stock At Cost 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 Other Than Temporary Loss On Investment Securities [Abstract] Other-than-temporary loss on investment securities: Total Other Than Temporary Impairment Oiit Losses Total other-than-temporary impairment ('OTTI') losses. Total impairment losses 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 Net Otti Losses Recognized In Earnings Net OTTI losses recognized in earnings. Net impairment loss recognized in earnings Gains On Sales Of Other Real Estate 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 owned Salaries And Incentive Compensation Expenditures for salaries, incentive and share based compensation Salaries and wages Pension And Other Employee Benefit Expense Amount of payroll tax expense, compensation, postemployment and benefit-related expenses not elsewhere specified in the taxonomy (such as health plan, profit sharing, incentives, tuition reimbursement, other fringe benefits and perquisites) incurred in the period. Pension and other employee benefits Losses On Sales Of Other Real Estate 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 owned (Increase) decrease in prepaid FDIC assessment Adjustments to prepaid FDIC assessments (Increase) decrease in prepaid FDIC assessment Expense Related To Employee Stock Compensation 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 Awards The noncash expense that represents the cost of stock awards distributed to employees. Expense related to employee stock awards Proceeds From Sales Of Student Loans Cash inflow associated with the sale of student loans, once they are in repayment. Proceeds from sales of student loans Restricted Stock Expense Directors Deferred Compensation Plan The noncash expense that represents the cost of restricted stock distributed to Directors as compensation. Expense related to restricted stock units for directors' deferred compensation plan Cash Paid During Year For [Abstract] Cash paid during the year for: Restricted Stock Units For Directors Deferrred Compensation Plan Increase and decrease in value of stock units to be issued in the future. Restricted stock units for directors' deferred compensation plan Distribution Of Shares Of Treasury Stock For Directors Compensation Value Value of treasury stock issued during the period for directors' compensation. Distribution of shares of treasury stock for directors' compensation Comprehensive Income [Abstract] Comprehensive Income [Abstract] Shareholders' equiity: [Abstract] Shareholders' equiity: Stock Based Compensation [Abstract] Components of Quarterly and Year [Abstract] Components of Quarterly and Year-to-Date Net Periodic Benefit Costs [Abstract] Loans and Allowance for Loan Losses [Abstract] Securities [Abstract] Commitments and Contingencies [Abstract]