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 Derivative, type of interest rate paid on swap Notional/ contract amount Derivative, Notional Amount Award Type [Axis] Number of temporarily impaired securities Available-for-sale Securities [Member] General Accounting Changes and Error Corrections [Text Block] General [Abstract] Loans and Allowance for Loan Losses [Abstract] Amortization of security premiums, net Accretion (Amortization) of Discounts and Premiums, Investments Accrued interest payable Accrued Liabilities, Fair Value Disclosure Ending balance Beginning balance Accumulated other comprehensive income (loss), net Unrealized Gains and Losses on Available-for-Sale Securities [Member] Accumulated Other Comprehensive Income (Loss) [Member] Supplemental Executive Retirement Plans [Member] Gains/(Losses) on Cash Flow Hedges [Member] Accumulated Other Comprehensive Income [Abstract] Accumulated Other Comprehensive Income Loss [Line Items] Accumulated Other Comprehensive Income Loss [Table] Adjustments to reconcile net income to net cash provided by operating activities: Amortization of unearned compensation, restricted stock awards Federal Home Loan Bank advances Advances from Federal Home Loan Banks Compensation expense Allocated Share-based Compensation Expense Allowance for Loan Losses and Recorded Investment in Loans Receivable Reserve for loan losses Asset Retirement Obligation, Accretion Expense Assets [Abstract] Assets, Fair Value Disclosure [Abstract] Total assets Assets Total assets at fair value Total assets at fair value Assets Assets [Abstract] Less than 12 months, fair value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Due after five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis Amortized cost and fair value of securities available for sale, with unrealized gains and losses Available-for-sale Securities [Table Text Block] Unrealized (loss) on securities available for sale, net of tax effect Equity securities Available-for-sale Equity Securities, Amortized Cost Basis Available-for-sale Securities, Amortized Cost [Abstract] Gross Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax 12 months or more, unrealized (losses) Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Gross Unrealized (Losses) Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Less than 12 months, unrealized (losses) Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Due in one year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Total, unrealized (losses) Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 12 months or more, fair value Fair Value Total Available-for-Sale, Fair Value Securities available for sale Securities available for sale Due after one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis Due after five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Total, fair value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale Securities, Fair Value [Abstract] Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Due after ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Due after ten years Total available-for-sale, Amortized Cost, net of OTTI loss Available-for-sale Securities, Amortized Cost Basis Due in one year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Securities with continuous unrealized loss position Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block] Securities with gross unrealized losses and fair value in a continuous unrealized loss position [Abstract] Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] Amortized cost and fair value of securities available for sale, with unrealized gains and losses [Abstract] Due after one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Equity securities Available-for-sale Securities, Equity Securities Balance Sheet Location [Axis] Balance Sheet Location [Domain] Bank-owned life insurance Brokerage income Brokerage Commissions Revenue Carrying Amount [Member] Cash and due from banks (Decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and Cash Equivalents Beginning Ending Cash and Cash Equivalents, at Carrying Value Cash surrender value of life insurance Cash Flow Hedging [Member] Class of Stock [Line Items] Class of Stock [Domain] Mortgage secured by business assets [Member] Collateralized Mortgage Obligations [Member] Commercial Real Estate [Member] Commercial Real Estate Portfolio Segment [Member] Commercial and Industrial [Member] Commercial Portfolio Segment [Member] Commitments and contingencies Common stock, par value (in dollars per share) Common Stock [Member] Common stock, par value, $3.13; authorized 8,000,000 shares; issued and outstanding: 2013: 3,713,342 shares including 34,109 non-vested shares: 2012: 3,695,160 shares including 31,423 non-vested shares Common stock, issued (in shares) Dividends per Share (in dollars per share) Cash dividends (in dollars per share) Common stock, authorized (in shares) Common stock, outstanding (in shares) Employee Benefit Plans [Abstract] Comprehensive Income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income: Changes in Accumulated Other Comprehensive Income Consumer [Member] Consumer Portfolio Segment [Member] Corporate Bonds [Member] Doubtful [Member] Derivative, description of variable rate basis Debt Instrument [Line Items] Schedule of Long-term Debt Instruments [Table] Principal amount of debt Borrowings Debt Instrument, Fair Value Disclosure Maturity date Maturity date of Floating Rate Junior Subordinated Deferrable Interest Debentures Deferred compensation expense Deferred Compensation Arrangement with Individual, Compensation Expense Deferred Compensation Plan [Abstract] Maximum annual contribution per employee, percent (in hundredths) Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Employer matching contribution, percent (in hundredths) Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 401K Expense 401(k) Plan [Abstract] Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] Total deposits Deposits Deposits: Deposits [Abstract] Deposits Deposits, Fair Value Disclosure Savings accounts and money market accounts NOW accounts Depreciation and amortization Derivative [Line Items] Derivative Instrument Risk [Axis] Derivative [Table] Expiration date Derivative, maturity date Derivative Instruments and Hedging Activities [Abstract] Interest rate swaps Derivative Asset Interest rate swaps Interest rate swaps Derivative Liability Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative, fixed interest rate (in hundredths) Estimated net fair value Derivative, Fair Value, Net Derivative, by Nature [Axis] Derivative, basis spread on variable rate (in hundredths) Number of derivative instruments entered into Derivative, Number of Instruments Held Derivative, Name [Domain] Hedging Relationship [Axis] Derivative Instruments, Gain (Loss) [Line Items] Amount of gain (loss) recognized in OCI on derivatives, net of tax (effective portion) Derivatives in cash flow hedging relationships [Abstract] Amount of gain (loss) recognized in income on derivative (ineffective portion) Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Contract Type [Domain] Derivatives, Fair Value [Line Items] Non employee Director [Member] Director [Member] Stock Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock Based Compensation [Abstract] Dividends Dividend Income, Operating Cash dividends Dividends, Common Stock, Cash Per share amount [Abstract] Earnings Per Share Reconciliation [Abstract] Earnings Per Share Earnings Per Share [Text Block] Earnings per Share, basic (in dollars per share) Basic earnings per share (in dollars per share) Earnings per Share, assuming dilution (in dollars per share) Diluted earnings per share (in dollars per share) Earnings Per Share, Diluted Earnings Per Share [Abstract] Stock Options [Member] Total unrecognized compensation cost Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Recognition period for total unrecognized compensation costs Furniture and equipment Equity Component [Domain] Fair Value [Member] Executive Officer [Member] Fair Value Inputs, Assets, Quantitative Information [Line Items] Weighted Average, Discount rate (in hundredths) Fair Value Inputs, Discount Rate Fair Value Inputs, Assets, Quantitative Information [Table] Fair Value, Measurements, Recurring [Member] Measurement Frequency [Axis] Fair Value, Hierarchy [Axis] Fair Value Measurements, Recurring and Nonrecurring [Table] Asset Class [Axis] Fair Value by Asset Class [Domain] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Measurement Frequency [Domain] Quantitative Information about level 3 fair value measurements Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Total gain (losses) realized/unrealized included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Total gain (losses) realized/unrealized 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 Measurement [Abstract] Fair Value, Measurements, Fair Value Hierarchy [Domain] Measurement Basis [Axis] Financial assets measured at fair value on a nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Fair Value Measurement Fair Value Disclosures [Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, by Balance Sheet Grouping [Table] Changes in Level 3 assets measured at estimated fair value on a recurring Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Estimated fair values of the financial instruments Fair Value, Disclosure Item Amounts [Domain] Significant Other Observable Inputs (Level 2) [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] Fair Value, Inputs, Level 1 [Member] Significant Other Unobservable Inputs (Level 3) [Member] Fair Value, Inputs, Level 3 [Member] Balance, beginning of period Balance, end of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Transfers in and/or out of level 3 and 2 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Value Hedging [Member] Federal Deposit Insurance Corporation expense Federal funds sold Trust and estate income Fees and Commissions, Fiduciary and Trust Activities Other service charges, commissions and income Fees and Commissions, Other Service charges on deposit accounts Fees and Commissions, Depositor Accounts Financial Instruments Owned and Pledged as Collateral by Type [Axis] Financial Instruments Owned and Pledged as Collateral, Type [Domain] Total liabilities at fair value Financial Liabilities Fair Value Disclosure Financial assets [Abstract] Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Modifications [Line Items] Carrying Amount > 90 Days and Accruing Non-accrual loans Nonaccruals Financing Receivable, Recorded Investment, Nonaccrual Status Financing Receivable, Allowance for Credit Losses [Line Items] Ending balances individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Financing Receivable, Recorded Investment [Line Items] Allowance for Loan Losses [Roll Forward] 30 to 59 Days Past Due Current Financing Receivable, Recorded Investment, 1 to 29 Days Past Due TDR loans value Charge-offs Financing Receivable, Allowance for Credit Losses, Write-downs Class of Financing Receivable [Domain] Age analysis of past due loans receivable [Abstract] 90 Days or More Past Due Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due 60 to 89 Days Past Due Financing Receivable, Recorded Investment, 60 to 89 Days Past Due Additional information on allowance for loan losses and recorded investment in loans receivable [Abstract] Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] Impaired Loans Receivable [Line Items] Financing Receivable, Impaired [Line Items] Recoveries Loans receivable, individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Beginning balance Ending balance Financing Receivable, Allowance for Credit Losses Credit Quality Indicators Class of Financing Receivable [Axis] Total Past Due Financing Receivable, Recorded Investment, Past Due Loans receivable, collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Troubled Debt Restructuring [Axis] Financing Receivable, Troubled Debt Restructuring [Domain] Ending balances collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Gain or (Loss) on swaps (Gain) loss on interest rate swaps Gain (Loss) on Sale of Derivatives Gain on sale of securities Gains (Losses) on Sales of Other Real Estate Gains (Losses) on Sales of Other Real Estate Hedging Relationship [Domain] Home Equity Line of Credit [Member] Home Equity Line of Credit [Member] Interest Income Recognized [Abstract] Impaired Financing Receivable, Interest Income, Accrual Method [Abstract] Interest income recognized, with no specific allowance recorded Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method Average recorded investment, with an allowance recorded Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Average Recorded Investment [Abstract] Unpaid Principal Balance [Abstract] Impaired Loans Receivable Recorded investment, with an allowance recorded Impaired Financing Receivable, with Related Allowance, Recorded Investment Interest income recognized, with an allowance recorded Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method Average recorded investment, total Unpaid principal balance, with no specific allowance recorded Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Unpaid principal balance, total Recorded investment, total Recorded investment, with no specific allowance recorded Impaired Financing Receivable, with No Related Allowance, Recorded Investment Related allowance, total Average recorded investment, with no specific allowance recorded Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Unpaid principal balance, with an allowance recorded Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Interest income, total Recorded Investment [Abstract] Impaired Financing Receivable, Recorded Investment [Abstract] Consolidated Statements of Income (Unaudited) [Abstract] Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income Statement Location [Axis] Income Statement Location [Domain] Income tax expense Income taxes Increase (decrease) in other liabilities Changes in assets and liabilities: (Increase) in other assets Increase (Decrease) in Other Operating Assets Net increase (decrease) in certificates of deposit Increase (Decrease) in Stockholders' Equity [Roll Forward] Effect of dilutive securities, stock-based awards (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Data processing expense Interest Income Interest and fees on loans Interest Expense Interest Expense [Abstract] Total interest expense Interest Expense Total interest income Interest and Dividend Income, Operating Interest and dividends on securities available for sale: Interest expense on interest rate swap Interest Expense, Other Interest Income [Member] Interest on deposits Interest on deposits in other banks Net interest income Interest Income (Expense), Net Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss Interest-bearing: Interest Interest Rate Swap [Member] Accrued interest receivable Taxable interest income Total interest-bearing Interest-bearing Deposit Liabilities Interest-bearing deposits in other banks Interest income exempt from federal income taxes Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Investment Type Categorization [Domain] Investment Type [Axis] Amortized cost and fair value of securities available for sale, by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] Securities [Abstract] Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Floating Rate Junior Subordinated Deferrable Interest Debentures [Member] Junior Subordinated Debt [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Salaries and benefits Total liabilities and shareholders' equity Liabilities and Equity Liabilities Liabilities [Abstract] Total liabilities Liabilities Liabilities and Shareholders' Equity Liabilities [Abstract] Liabilities, Fair Value Disclosure [Abstract] Life Insurance, Corporate or Bank Owned, Change in Value Impaired Loans [Abstract] Allowance for loan losses Loans and Leases Receivable, Allowance Impairment of Loans Loans Loans receivable, ending balance Loans receivable Loans and Leases Receivable, Net of Deferred Income Net loans Loans and Leases Receivable, Net Amount Loans and Allowance for Loan Losses Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Net Loans Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Company obligated mandatorily redeemable capital securities Mandatorily Redeemable Preferred Stock, Fair Value Disclosure Marketing expense Maximum [Member] Number of loans Net Income Net Income Net income Net Income (Loss) Attributable to Parent Cash Flows from Financing Activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash (used in) financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Cash Flows from Investing Activities Cash Flows from Operating Activities Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations Recent Accounting Pronouncements Supplemental Disclosures of Noncash Investing Activities Noninterest-bearing Total other expenses Noninterest Expense Total other income Noninterest Income Other Income Noninterest Income [Abstract] Other Expenses Noninterest Expense [Abstract] Occupancy expense of premises Total other comprehensive income (loss), net of tax of $(61) in 2014 and $258 in 2013 Other comprehensive income net of tax effect Interest rate swap, tax benefit Impairment losses on securities Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Interest rate swap, net of tax effect of $15 in 2014 and $(69) in 2013 Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Less: Increases in cash flows expected to be collected that are recognized over the remaining life of the security (See FASB ASC 320-10-35-35) Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Cash Flows Other assets Amount related to credit losses recognized in earnings [Roll Forward] Less: Securities for which the amount previously recognized in other comprehensive income was recognized in earnings because the Company intends to sell the security or more likely than not will be required to sell the security before recovery of its amortized cost basis Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Change in Status Other comprehensive income, tax Other comprehensive income (loss), tax effect Less: Realized losses for securities sold Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold Add: Increases to the amount related to the credit loss for which an other-than temporary impairment was previously recognized Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses Add: Amount related to the credit loss for which an other-than-temporary impairment was not previously recognized Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment Beginning balance Ending balance Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Amount related to credit losses recognized in earnings Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Change in fair value of securities available-for-sale net of tax effect of $(76) in 2014 and $327 in 2013 Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Change in fair value of securities available-for-sale, tax effect Other operating expenses Other liabilities Other real estate owned Other Real Estate Other Assets [Member] Net current-period other comprehensive income Other Liabilities [Member] Age Analysis of Past Due Loans Receivable Pass [Member] Net decrease in loans Payments for (Proceeds from) Loans and Leases Purchase of securities available for sale Payments to Acquire Available-for-sale Securities Cash dividends paid on common stock Payments of Ordinary Dividends, Common Stock Purchase of premises and equipment Payments to Acquire Property, Plant, and Equipment Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Performance based stock rights [Member] Performance Shares [Member] Plan Name [Domain] Plan Name [Axis] Carrying value of securities pledged Pledged Assets Separately Reported, Securities Pledged as Collateral, at Fair Value Proceeds from maturities, calls and principal payments of securities available for sale Issuance of common stock Proceeds from Sale of Available-for-sale Securities, Debt Proceeds from sale of other real estate owned Bank premises and equipment, net Provision for loan losses Provision (recovery) Amounts reclassified from accumulated other comprehensive income Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (Increase) Decrease in FHLB advances Repayments of Federal Home Loan Bank Borrowings Residential Real Estate [Member] Mortgage secured by real estate [Member] Residential Mortgage [Member] Restricted investments Unvested Restricted Shares [Member] Restricted Stock [Member] Restricted investments Restricted Investments, at Fair Value Retained earnings Retained Earnings [Member] Substandard [Member] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Available-for-sale Securities [Table] Effects of Derivative Instruments on Consolidated Financial Statements Schedule of Impaired Financing Receivable [Table] Financial assets and liabilities measured at fair value on recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Summary of status of non-vested performance-based stock rights Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Changes in accumulated other comprehensive income Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Summary of status of non-vested restricted shares Schedule of Available-for-sale Securities [Line Items] Weighted Average Number of Shares Used in Computing Earnings Per Share Schedule of Weighted Average Number of Shares [Table Text Block] Schedule of Stock by Class [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Non-vested equity instruments other than options, shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 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 Nonvested at end of period (in shares) Nonvested at beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Amortization of unearned compensation, net of forfeiture Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Non-vested equity instruments other than option, weighted average fair value [Roll Forward] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Nonvested at January 1, 2013 (in dollars per share) Nonvested at end of period (in dollars per share) Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period 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 (in shares) Award Type [Domain] Special Mention [Member] Statement [Table] Statement [Line Items] Consolidated Statements of Changes in Shareholders' Equity (Unaudited) [Abstract] Consolidated Statements of Comprehensive Income (Unaudited) [Abstract] Consolidated Statements of Cash Flows (Unaudited) [Abstract] Statement, Equity Components [Axis] Consolidated Balance Sheets (Unaudited) [Abstract] Class of Stock [Axis] Shareholders' Equity Total shareholders' equity Balance Balance Stockholders' Equity Attributable to Parent Subsequent Events Subsequent Events [Text Block] Subsequent Events [Abstract] Derivatives in fair value hedging relationships [Abstract] Supplemental Disclosures of Cash Flow Information Time deposits Title of Individual [Axis] Title of Individual with Relationship to Entity [Domain] Troubled Debt Restructurings Loss [Member] Unlikely to be Collected Financing Receivable [Member] Unallocated Financing Receivables [Member] Unrealized gain (loss) on interest rate swap, net of taxes Unrealized Gain (Loss) on Derivatives Obligations of States and Political Subdivisions [Member] Obligations of U.S. Government Corporations and Agencies [Member] Valuation Technique [Domain] Valuation Technique [Axis] Shares [Abstract] Basic earnings per share (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted earnings per share (in shares) Weighted Average Number of Shares Outstanding, Diluted Company realized tax-free death benefit in excess of surrender value related to bank-owned life insurance. Tax Free Death Benefit Document and Entity Information [Abstract] Cash collateral held at other banks for the swaps Cash Collateral for Swaps Forward based contracts dated August 15, 2011 in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period. Interest Rate Swaps II [Member] Number of commercial loans related to which interest rate swap agreements were entered into. Number of commercial loans related to interest rate swaps 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 element represents the fair value of life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy. Bank Owned Life Insurance, Fair Value Disclosure BOLI This element may be used in connection with the fair value disclosures for accrued interest receivable required in the footnote disclosures to the financial statements. Accrued interest recievable, fair value disclosure Accrued interest receivable 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 includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. Cash and Short-term Investments, Fair Value Disclosure Cash and short-term investments Number of nonvested common shares issued during the period. Issuance Of Common Stock Non Vested Shares Issuance of common stock - nonvested shares (in shares) Number of vested common shares issued during the period. Issuance Of Common Stock Vested Shares Issuance of common stock - vested shares (in shares) The par value of restricted nonvested shares fully amortized during the period. Issuance of common stock nonvested value Issuance of common stock - nonvested shares Tax expenses related to restricted stock granted during the period. Tax Expense of Restricted Stock Grant Tax benefit of restricted stock grant Value of vested shares issued during the period. Issuance Of Common Stock Vested Value Issuance of common stock - vested shares Represents the minimum age of the appraisal of a real estate property for to be considered level 3. Age of appraisal of real estate property for to be considered level 3, minimum Total Valuation of Property Total Valuation of Property Other real estate owned by the company. Other Real Estate Owned [Member] This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. Total Assets, Including OREO, Fair Value Disclosure Total Loan securities that have been impaired Impaired Loans [Member] Discounted cash flow valuation technique used to measure fair value. Discounted cash flow [Member] 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 Available-for-sale Securities in corporate bonds. Available-for-sale Securities, Corporate Bonds, Fair Value Disclosure Corporate bonds 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 Available-for-sale Securities in obligations of U.S. Government corporations and agencies. Available-for-sale Securities, Obligations of U.S. Government Corporations and Agencies, Fair Value Disclosure Obligations of U.S. Government corporations and agencies 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 Available-for-sale Securities in obligations of states and political subdivisions. Available-for-sale Securities, 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 Available-for-sale Securities in mutual funds. Available-for-sale Securities, Mutual Funds, Fair Value Disclosure Mutual funds Assets Available-for-sale Securities, Fair Value Disclosure [Abstract] Assets available for sale securities [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 impaired loan receivable as presented on the statement of financial position which may include impaired mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts, or any other loans which are due the Company as of the balance sheet date. Impaired Loans Fair Value Disclosure Impaired loans, net Impaired Loans at 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 element represents the fair value of other real estate owned, net of valuation allowance. Other Real Estate Owned, Net, Fair Value Disclosure Other real estate owned, net Financial Assets Measured at Fair Value on a Nonrecurring Basis [Abstract] Financial Assets Measured at Fair Value on a Nonrecurring Basis [Abstract] Percentage of first 1 percent of employees' gross pay deferred for which the employer contributes a matching contribution to a defined contribution plan. Defined Contribution Plan, Employer Matching Contribution, Percentage, First 1 Percent of Deferred Compensation Employer matching contribution of first 1% (in hundredths) Maximum number of installments available for the deferred compensation arrangement. Deferred Compensation Arrangement with Individual, Number of Installments Available, Maximum Number of installments available, maximum Minimum number of installments available for the deferred compensation arrangement. Deferred Compensation Arrangement with Individual, Number of Installments Available, Minimum Number of installments available, minimum The minimum age required to be eligible for the plan. Defined Contribution Plan, Minimum Years of Age Minimum years of age to be eligible The required period of service for an employee to be eligible for the plan. Defined Contribution Plan, Period of Service Required to Be Eligible Period of service required to be eligible The percentage of additional safe harbor contribution made by employer. Additional safe harbor contribution by employer, percent Additional safe harbor contribution by employer, percent (in hundredths) Percentage of next 5 percent of employees' gross pay deferred for which the employer contributes a matching contribution to a defined contribution plan. Defined Contribution Plan, Employer Matching Contribution, Percentage, Next 5 Percent of Employee Contribution Employer matching contribution for next 5% of employee contribution (in hundredths) 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 Shares Non Vested Common stock, nonvested (in shares) Carrying amount as of the balance sheet date of other real estate owned net of valuation allowance. Other Real Estate Owned Other real estate owned, net of allowance 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. Trust Preferred Securities Company-obligated mandatorily redeemable capital securities The period after issue date, over which the issuer of the capital security is permitted to repay or convert it before the stated maturity date (early retirement date). Capital Securities, Callable Period Callable period of capital securities Capital security issued by the Company's wholly-owned Connecticut statutory business trust in a pooled capital securities offering on September 21, 2006. Floating Rate Capital Securities [Member] The percentage points added to the reference rate to compute the variable rate on the capital securities. Capital securities, basis spread on variable rate Capital securities, basis spread on variable rate (in hundredths) The carrying amount of capital securities as of the balance sheet date. Capital Securities Capital securities The reference rate for the variable rate of the capital securities, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. Capital securities, description of variable rate basis Face amount of capital securities issued. Capital Securities, Face Amount Face amount of capital securities Changes In Accumulated Other Comprehensive Income [Roll Forward] Tabular disclosure of non-performing assets, restructured loans still accruing, and loans contractually past due. Non-performing Assets, Restructured Loans Still Accruing, and Loans Contractually Past Due [Table Text Block] Non-performing Assets, Restructured Loans Still Accruing, and Loans Contractually Past Due The term of equity-based compensation awards over which such awards remain valid. Share-based Compensation Arrangement by Share-based Payment Award, Term Award term The exercise price of options as percentage of the market value on purchase date that participants pay for shares. Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercise Price as Percentage of Market Price Exercise price of options as percentage of market price (in hundredths) Under the Company's Stock Incentive Plan (Plan), stock options, stock appreciation rights, non-vested and/or restricted shares, and long-term performance unit awards may be granted to directors and certain employees for purchase of the Company's common stock. Stock Incentive Plan [Member] Stock Incentive Plan [Member] 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 [Text Block] Company-Obligated Mandatorily Redeemable Capital Securities Company-Obligated Mandatorily Redeemable Capital Securities [Abstract] Carrying amount as of the balance sheet date of commercial loans classified as substandard, which were deemed not to be impaired. Commercial loans classified as substandard deemed not to be impaired Represents the increase (decrease) in the number of new impaired loans during the reporting period. Increase (Decrease) in Number of New Impaired Loans Amount of allowance for credit losses related to recorded investment, with related allowances. Impaired Financing Receivable, with No Related Allowance, Related Allowance Related allowance, with no specific allowance recorded Amount of balance in impaired loans collateralized by commercial buildings, residential real estate or land. Impaired Financing Receivable, Recorded Investment, Collateralized Collateralized loans classified as impaired Amount of allowance for credit losses related to recorded investment with related allowance. Impaired Financing Receivable, with Related Allowance, Related Allowance Related allowance, with an allowance recorded Impaired Financing Receivable, Related Allowance [Abstract] Related Allowance [Abstract] The increase (decrease) during the reporting period of amounts due from note holders for outstanding impaired loans. Increase (Decrease) in Impaired Loans Receivable Increase (decrease) in impaired loans Represents the increase (decrease) of new impaired loans during the reporting period. Increase (Decrease) of New Impaired Loans Carrying amount of Student Loans (U. S. Government guaranteed past due 90 or more days and still accruing Student Loans 90 PD Still Accruing Portfolio segment of the company's total financing receivables related to US Government guaranteed student receivables. Student US Government Guaranteed [Member] Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default related to pre-modification recorded investment. Financing Receivable Modifications, Subsequent Default, Pre-Modification Recorded Investment Troubled debt restructurings that subsequently defaulted, pre-modification outstanding recorded investment Portfolio segment of the company's total financing receivables related to commercial receivables. Construction and Land [Member] Represents the number of troubled debt restructuring loans that are current and performing in accordance with modified terms. Number of TDR Loans Current and Performing Number of TDR loans current and performing Carrying amount of restructured loans still accruing related to troubled debt restructuring. Restructured loans still accruing Restructured loans still accruing The percentage of non-accrual loans to total loans. Non-accrual loans to total loans, percentage Non-accrual loans to total loans (in hundredths) Number of financing receivables that have been modified by troubled debt restructurings. Modifications Number Of Contracts Troubled debt restructurings, number of contracts Amount of investment in financing receivables (after modification) modified by troubled debt restructurings. Post- Modification Recorded Investment Troubled debt restructurings, post-modification outstanding recorded investment Represents the carrying value of troubled debt restructuring loans that are not performing in accordance with modified terms. TDR Loans Not Performing in Accordance With Modified Terms TDR loans not performing in accordance with modified terms Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default. Subsequent Default, Recorded Investment Troubled debt restructurings that subsequently defaulted, post-modification outstanding recorded investment Represents the number of troubled debt restructuring loans that are secured by business assets. Number of TDR Loans Secured by Business Assets Number of TDR loans secured by business assets Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. Subsequent Default Number Of Contracts Troubled debt restructurings that subsequently defaulted, number of contracts Represents the number of troubled debt restructuring loans that are not performing in accordance with modified terms. Number of TDR Loans Not Performing in Accordance With the Modified Terms Number of TDR loans not performing in accordance with the modified terms Represents the carrying value of troubled debt restructuring loans that are current and performing in accordance with modified terms. TDR Loans Current and Performing TDR loans current and performing Amount of investment in financing receivables (before modification) modified by troubled debt restructurings. Pre- Modification Recorded Investment Troubled debt restructurings, pre-modification outstanding recorded investment The percentage of total non-performing assets to total assets. Total non-performing assets to total assets, percentage Total non-performing assets to total assets (in hundredths) Other loans past due 90 or more days and still accruing Loans past due 90 days and accruing excluding student loans Loans past due 90 or more days and still accruing The percentage of allowance for loan losses to non-accrual loans and restructured loans still accruing. Allowance for loan losses to non-accrual loans and restructured loans still accruing, percentage Allowance for loan losses to non-accrual loans and restructured loans still accruing (in hundredths) The percentage of allowance for loan losses to non-accrual loans. Allowance for loan losses to non-accrual loans, percentage Allowance for loan losses to non-accrual loans (in hundredths) Carrying amount of non-performing and other risk assets. Non-performing and other risk assets Total non-performing and other risk assets The percentage of total non-accrual loans and restructured loans still accruing to total loans. Total non-accrual loans and restructured loans still accruing to total loans, percentage Total non-accrual loans and restructured loans still accruing to total loans (in hundredths) The percentage of allowance for loan losses to total loans. Allowance for loan losses to total loans, percentage Allowance for loan losses to total loans (in hundredths) Investment in non-performing corporate bond investments, at fair value. Nonperforming corporate bond investments, at fair value Non-performing corporate bond investments, at fair value Carrying amount as of the balance sheet date of non-performing assets, including non-accrual loans, other real estate, foreclosed assets, and non-performing corporate bond investments. Non-performing assets Total non-performing assets Non-performing Assets, Restructured Loans Still Accruing and Loans Contractually Past Due [Abstract] Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period. Interest Rate Swap Four [Member] Interest Rate Swap-10 Year Fair Value 3 [Member] Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period. Interest Rate Swap Two [Member] Interest Rate Swap-10 Year Fair Value 1 [Member] Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period. Interest Rate Swap Three [Member] Interest Rate Swap-10 Year Fair Value 2 [Member] Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period. Interest Rate Swap One [Member] Interest Rate Swap-10 Year Cash Flow [Member] Tabular presentation of pooled trust preferred securities including cost, net of OTTI loss, fair value, percent of underlying collateral performing, percent of underlying collateral in deferral, percent of underlying collateral in default, estimated incremental defaults required to break yield, current Moody's rating, cumulative amount of OTTI loss, and cumulative other comprehensive loss, net of tax benefit. Pooled trust preferred securities [Table Text Block] Pooled trust preferred securities The amount of tax expense related restricted stock grant. Tax Expense Related Restricted Stock Grant Tax benefit of vested stock grant Cash payments for [Abstract] Cash payments for: The net cash inflow (outflow) of all non-time deposits. Net Increase Decrease In Non Time Deposits Net increase (decrease) in demand deposits, NOW accounts and savings accounts The net cash outflow or inflow of other bank stock during the period. Payments For Proceeds From Other Bank Stock Redemptions (purchases) of restricted securities Interest expense incurred during the reporting period on borrowings associated with Federal Home Loan Bank. Interest Expense Federal Home Loan Bank Interest on Federal Home Loan Bank advances 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, expenses and write-downs of other real estate owned after acquisition or physical possession. Gains (Loss) on Sales of Other Real Estate Gains (Losses) on Sales of Other Real Estate 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 Legal, audit and consulting expense Total interest expense on capital securities, net of interest rate swap. Distribution On Capital Securities Of Subsidiary Trusts Distribution on capital securities of subsidiary trusts Interest Income from performing bonds. Interest Income Performing Bonds Estimated incremental defaults required to break yield for pooled trust preferred securities. Estimated incremental defaults required to break yield percentage The fair value of securities purchased during the period. Fair Value of Securities Purchased The number of securities purchased during the period. Number of Securities Purchased The fair value of securities sold during the period. Fair Value of Securities Sold The fair value of called securities during the period. Fair Value Of Securities Called Deferred interest income from performing bonds from prior periods. Deferred Interest Income Performing Bonds Represents the number of securities sold during the period. Number of securities sold Percent of underlying collateral in default for pooled trust preferred securities. Percent of Underlying Collateral in Default Percent of Underlying Collateral in Default (in hundredths) Available-for-sale securities related to mutual funds. Mutual funds [Member] Mutual Funds [Member] Fair value of bonds classified as nonperforming. Fair value of bonds classified as nonperforming Estimated incremental defaults required to break yield for pooled trust preferred securities. Estimated incremental defaults required to break yield Cumulative amount of OTTI loss for pooled trust preferred securities. Cumulative amount of OTTI Loss Percent of underlying collateral in deferral for pooled trust preferred securities. Percent of Underlying Collateral in Deferral Percent of Underlying Collateral in Deferral (in hundredths) Cumulative other comprehensive loss, net of tax for pooled trust preferred securities. Cumulative Other Comprehensive Loss, net of tax Cumulative Other Comprehensive Loss, net of tax benefit Percentage of underlying collateral performing for pooled trust preferred securities. Percent of Underlying Collateral Performing Percent of Underlying Collateral Performing (in hundredths) Additional information regarding pooled trust preferred securities [Abstract] Additional information regarding each of the pooled trust preferred securities [Abstract] Pooled trust preferred securities III for corporate bonds. Pooled trust preferred securities III [Member] Number of bonds classified as performing due to the fact that it has been performing for more than three consecutive quarters. Bonds classified as performing Fair value of bonds classified as performing due to the fact that it has been performing for three consecutive quarters. Fair value of bonds classified as performing Amortized Cost and Fair Value of Debt Securities Available-for-sale by Contractual Maturity [Abstract] Amortized cost and fair value of securities available for sale, by contractual maturity [Abstract] Represents the number of different financial institutions per bond in a geographically diversified pool. Number of different financial institutions per bond Number of securities called during the period. Number of securities called Represents the anniversary on which securities could have been called at par. Anniversary on which securities could have been called at par Represents the frequency of re-pricing of securities. Frequency of re-pricing Number of quarters that the bond has been performing. Number of consecutive quarters that the bond has been performing Number of bonds classified as nonperforming. Bonds classified as nonperforming Represents the estimated maturity of securities. Estimated maturity Pooled trust preferred securities I member for corporate bonds. Pooled trust preferred securities I [Member] Pooled trust preferred securities IV for corporate bonds. Pooled trust preferred securities IV [Member] Pooled trust preferred securities member for corporate bonds. Pooled trust preferred securities [Member] Pooled trust preferred securities II for corporate bonds. Pooled trust preferred securities II [Member]