Receivables [Abstract] Transfers and Servicing of Financial Assets, Policy Transfers and Servicing of Financial Assets, Policy [Policy Text Block] Loans and Leases Receivable, Allowance for Loan Losses Policy Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Investments, Debt and Equity Securities [Abstract] Schedule of Held-to-maturity Securities [Table] Schedule of Held-to-maturity Securities [Table] Debt Security [Axis] Debt Security [Axis] Major Types of Debt Securities [Domain] Major Types of Debt Securities [Domain] U.S. Government agency obligations - government-sponsored enterprises US Government-sponsored Enterprises Debt Securities [Member] Municipal obligations Nontaxable Municipal Bonds [Member] Collateralized mortgage obligations - government issued Government National Mortgage Association Certificates and Obligations (GNMA) [Member] Collateralized mortgage obligations - government-sponsored enterprises Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Schedule of Held-to-maturity Securities Schedule of Held-to-maturity Securities [Line Items] Securities held-to-maturity, at amortized cost Held-to-maturity Securities Gross unrealized holding gains Held-to-maturity Securities, Gross Unrealized Gain Held-to-maturity Securities, Gross Unrealized Gain Gross unrealized holding losses Held-to-maturity Securities, Gross Unrealized Loss Held-to-maturity Securities, Gross Unrealized Loss Estimated Fair Value Held-to-maturity Securities, Fair Value Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Table] Derivative [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] First Business Bank First Business Bank [Member] First Business Bank [Member] First Business Bank - Milwaukee First Business Bank - Milwaukee [Member] First Business Bank - Milwaukee [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Derivative, by Nature [Axis] Derivative, by Nature [Axis] Derivative, Name [Domain] Derivative, Name [Domain] To commercial borrowers, corporation receives fixed rates and pays floating rates To Commercial Borrowers, Corporation Receives Fixed Rates and Pays Floating Rates [Member] To Commercial Borrowers, Corporation Receives Fixed Rates and Pays Floating Rates [Member] To dealer countparties, corporation pays fixed rates and receives floating rates To Dealer Countparties, Corporation Pays Fixed Rates and Receives Floating Rates [Member] To Dealer Countparties, Corporation Pays Fixed Rates and Receives Floating Rates [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Derivatives Derivative [Line Items] Notional value of interest rate swaps with various commercial borrowers Derivative, Notional Amount Derivative, maturity date Derivative, Maturity Date Interest rate swap contracts not designated as hedging instruments - assets, gross Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value Interest rate swap contracts not designated as hedging instruments - liabilities, gross Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value Derivative asset, fair value, amount offset against collateral Derivative Asset, Fair Value, Amount Offset Against Collateral Interest rate derivative instruments not designated as hedging instruments at fair value, net Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net Interest rate derivatives, line item on income statement for gain (loss) Description of Location of Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments in Financial Statements Municipal obligations Fair Value Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] Less than 12 months Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 12 months or longer Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Total Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value Unrealized Losses Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] Less than 12 months Held-to-Maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss1 Held-to-Maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss1 12 months or longer Held-to-Maturity Securities, Continuous Unrealized Loss Position, 12 months or longer, Aggregate Loss1 Held-to-Maturity Securities, Continuous Unrealized Loss Position, 12 months or longer, Aggregate Loss1 Total Held-to-Maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss1 Held-to-Maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss1 Fair Value Disclosures [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value Measurements - Level 1 Inputs Fair Value, Inputs, Level 1 [Member] Fair Value Measurements - Level 2 Inputs Fair Value, Inputs, Level 2 [Member] Fair Value Measurements - Level 3 Inputs Fair Value, Inputs, Level 3 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Financial assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Cash and cash equivalents, carrying amount Cash and Cash Equivalents, at Carrying Value Securities available-for-sale, carrying amount Available-for-sale Securities, Debt Securities Securities held-to-maturity, carrying value Loans and leases receivable, net amount, carrying amount Loans and Leases Receivable, Net Amount Federal Home Loan Bank stock, carrying amount Federal Home Loan Bank Stock Cash surrender value of life insurance, carrying amount Bank Owned Life Insurance Accrued interest receivable, carrying amount Interest Receivable Interest rate swaps - assets, carrying amount Cash and cash equivalents, fair value Cash and Cash Equivalents, Fair Value Disclosure Securities available-for-sale, fair value Available-for-sale Securities Held-to-maturity Securities, fair value Loans and lease receivables, net, fair value Loans Receivable, Fair Value Disclosure Federal Home Loan Bank stock, fair value Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Cash surrender value of life insurance, fair value Cash Surrender Value, Fair Value Disclosure Accrued interest receivable, fair value Accrued Interest Receivable Fair Value Disclosure Accrued Interest Receivable Fair Value Disclosure Interest rate swaps - assets, fair value Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value, Fair Value Disclosure Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value, Fair Value Disclosure Financial liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Deposits, carrying amount Deposits Federal Home Loan Bank and other borrowings, carrying amount Federal Home Loan Bank and Other Borrowings Federal Home Loan Bank and other borrowings Junior subordinated notes, carrying amount Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust Interest rate swaps - liabilities, carrying amount Accrued interest payable, carrying amount Interest Payable Standby letters of credit, carrying amount Letters of Credit Outstanding, Amount Commitments to extend credit, carrying amount Commitments to Extend Credit, Carrying Amount Commitments to Extend Credit, Carrying Amount Deposits, fair value Deposits, Fair Value Disclosure Federal Home Loan Bank and other borrowings fair value Federal Home Loan Bank and Other Borrowings Fair Value Disclosure Federal Home Loan Bank and Other Borrowings Fair Value Disclosure Junior subordinated notes, fair value Subordinated Debt Obligations, Fair Value Disclosure Interest rate swaps - liabilities, fair value Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value, Fair Value Disclosure Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value, Fair Value Disclosure Accrued interest payable, fair value Accrued Liabilities, Fair Value Disclosure Standby letters of credit, fair value Standby Letters of Credit, Fair Value Disclosure Standby Letters of Credit, Fair Value Disclosure Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Asset-backed securities Asset-backed Securities [Member] Collateralized mortgage obligations - government issued Collateralized mortgage obligations - government-sponsored enterprises Schedule of Available-for-sale Securities Schedule of Available-for-sale Securities [Line Items] Fair value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] Less than 12 months Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 12 months or longer Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Total Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Unrealized losses Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract] Less than 12 months Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss1 Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss1 12 months or longer Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss1 Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss1 Total Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss1 Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss1 Amortized cost Available-for-sale Debt Securities, Amortized Cost Basis Gross unrealized holding gains Available-for-sale Securities, Gross Unrealized Gain1 Available-for-sale Securities, Gross Unrealized Gain1 Gross unrealized holding losses Available-for-sale Securities, Gross Unrealized Loss1 Available-for-sale Securities, Gross Unrealized Loss1 Estimated fair value Fair Value Inputs, Assets, Quantitative Information [Table] Fair Value Inputs, Assets, Quantitative Information [Table] Asset Class [Axis] Asset Class [Axis] Fair Value by Asset Class [Domain] Asset Class [Domain] Impaired loans Impaired Loans [Member] Impaired Loans [Member] Foreclosed properties Foreclosed Properties [Member] Foreclosed Properties [Member] Weighted Average Weighted Average [Member] Fair Value Inputs, Assets, Quantitative Information Fair Value Inputs, Assets, Quantitative Information [Line Items] Fair value, assets, level 1 to level 2 transfers Fair Value, Assets, Level 1 to Level 2 Transfers, Amount Fair value, assets, level 2 to level 1 transfers Fair Value, Assets, Level 2 to Level 1 Transfers, Amount Fair value, assets, transfers into level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Fair value, assets, transfers out of level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Fair value, liabilities, level 1 to level 2 transfers Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount Fair value, liabilities, level 2 to level 1 transfers Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount Fair value, liabilities, transfers into level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 Fair value, liabilities, transfers out of level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Assets measured on a non-recurring basis, fair value Assets, Fair Value Disclosure, Nonrecurring Quantification of unobservable inputs for level 3 values for impaired loans Quantification of unobservable inputs for Level 3 values for impaired loans Quantification of unobservable inputs for Level 3 values for impaired loans Assets, fair value disclosure, nonrecurring, number of foreclosed properties Assets, Fair Value Disclosure, Nonrecurring, Number of Assets Assets, Fair Value Disclosure, Nonrecurring, Number of Assets Commercial paper, at carrying value Commercial Paper, at Carrying Value Certificates of deposit, at carrying value Certificates of Deposit, at Carrying Value Business Combinations [Abstract] Business Combination Disclosure Business Combination Disclosure [Text Block] Regulatory Capital Requirements [Abstract] Regulatory Capital Regulatory Capital Requirements under Banking Regulations [Text Block] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Commercial real estate — owner occupied Commercial Real Estate Loans Receivable - Owner Occupied [Member] Commercial Real Estate Loans Receivable - Owner Occupied [Member] Commercial real estate — non-owner occupied Commercial Real Estate Loans Receivable - Non-owner Occupied [Member] Commercial Real Estate Loans Receivable - Non-owner Occupied [Member] Construction and land development Commercial Real Estate Loans Receivable - Construction and Land Development [Member] Commercial Real Estate Loans Receivable - Construction and Land Development [Member] Multi-family Commercial Real Estate Loans Receivable - Multi-Family [Member] Commercial Real Estate Loans Receivable - Multi-Family [Member] 1-4 family Commercial Real Estate Loans Receivable - 1-4 Family [Member] Commercial Real Estate Loans Receivable - 1-4 Family [Member] Commercial and industrial Commercial and Industrial Loans Receivable [Member] Commercial and Industrial Loans Receivable [Member] Direct financing leases, net Finance Leases Financing Receivable [Member] Home equity and second mortgages Home Equity Loans and Second Mortage Loans Receivable [Member] Home Equity Loans and Second Mortage Loans Receivable [Member] Other Other Loans Receivable [Member] Other Loans Receivable [Member] Troubled debt restructurings Financing Receivable, Modifications [Line Items] Number of Loans Financing Receivable, Modifications, Number of Contracts3 Financing Receivable, Modifications, Number of Contracts3 Pre-Modification Recorded Investment Financing Receivable, Modifications, Pre-Modification Recorded Investment3 Financing Receivable, Modifications, Pre-Modification Recorded Investment3 Post-Modification Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment3 Financing Receivable, Modifications, Post-Modification Recorded Investment3 Debt Disclosure [Abstract] Line of Credit Facility [Table] Line of Credit Facility [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Line of credit Line of Credit [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Line of credit - unused line fee Line of Credit Facility, Commitment Fee Amount Debt Instrument, Covenant Compliance Debt Instrument, Covenant Compliance Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Available-for-Sale Securities Interest rate swaps Interest Rate Swap [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Fair Value, Assets and Liabilities Measured on a Recurring Basis Fair Value, Assets and Liabilities Measured on a Recurring Basis [Line Items] [Line Items] Fair Value, Assets and Liabilities Measured on a Recurring Basis [Line Items] Assets measured on a recurring basis, fair value Assets, Fair Value Disclosure, Recurring Liabilities measured on a recurring basis, fair value Liabilities, Fair Value Disclosure, Recurring Commercial real estate — owner occupied Commercial Real Estate Loans Receivable - Owner Occupied Commercial Real Estate Loans Receivable - Owner Occupied Commercial real estate — non-owner occupied Commercial Real Estate Loans Receivable - Non-Owner Occupied Commercial Real Estate Loans Receivable - Non-Owner Occupied Construction and land development Commercial Real Estate - Construction and Land Development Commercial Real Estate - Construction and Land Development Multi-family Commercial Real Estate Loans Receivable - Multi-Family Commercial Real Estate Loans Receivable - Multi-Family 1-4 family Commercial Real Estate Loans Receivable - 1-4 Family Commercial Real Estate Loans Receivable - 1-4 Family Total commercial real estate Loans Receivable, Gross, Commercial, Real Estate Commercial and industrial Loans Receivable, Gross, Commercial and Industrial Direct financing leases, net Capital Leases, Net Investment in Direct Financing Leases Home equity and second mortgages Loans and lease receivable, gross Home equity loans and second mortgage loans Loans and lease receivable, gross Home equity loans and second mortgage loans Other Loans and Leases Receivable, Gross, Consumer, Other Total consumer and other Loans and Leases Receivable, Gross, Total Consumer and Other Loans and Leases Receivable, Gross, Total Consumer and Other Total gross loans and leases receivable Loans and Leases Receivable, Gross Allowance for loan and lease losses Loans and Leases Receivable, Allowance Deferred loan fees Loans and Leases Receivable, Deferred Income Loans and leases receivable, net Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Total non-accrual commercial real estate Commercial Real Estate Portfolio Segment [Member] Total non-accrual consumer and other loans Total consumer and other loans receivable [Member] Total Consumer and Other Loans Receivable [Member] Financing Receivable, Impaired Financing Receivable, Impaired [Line Items] Non-accrual loans and leases Financing Receivable, Recorded Investment, Nonaccrual Status Foreclosed properties, net Repossessed Assets Total non-performing assets Total Nonperforming Assets Total Nonperforming Assets Performing troubled debt restructurings Financing Receivable, Modifications, Performing Troubled Debt Restructuring Financing Receivable, Modifications, Performing Troubled Debt Restructuring Total impaired assets Impaired Assets Impaired Assets Total non-accrual loans and leases to gross loans and leases Loans and Leases Receivable, Ratio of Nonperforming Loans to All Loans Total non-performing assets to total gross loans and leases plus foreclosed properties, net Ratio of Total Nonperforming Assets to Gross Loans and Leases Plus Foreclosed Properties, Net Ratio of Total Nonperforming Assets to Gross Loans and Leases Plus Foreclosed Properties, Net Total non-performing assets to total assets Ratio of Total Nonperforming Assets to Total Assets Ratio of Total Nonperforming Assets to Total Assets Allowance for loan and lease losses to gross loans and leases Ratio of Allowance for Loan and Lease Losses to Total Gross Loans and Leases Ratio of Allowance for Loan and Lease Losses to Total Gross Loans and Leases Allowance for loan and lease losses to non-accrual loans and leases Ratio of Allowance for Loan and Leases Losses to Non-accrual Loans and Leases Ratio of Allowance for Loan and Leases Losses to Non-accrual Loans and Leases Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation, Stock Options, Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Schedule of Share-based Compensation Expense Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Earnings Per Share [Abstract] Earnings Per Share, Policy Earnings Per Share, Policy [Policy Text Block] Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Statement of Comprehensive Income [Abstract] Net income Net Income (Loss) Attributable to Parent Other comprehensive income (loss), before tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, [Abstract] Unrealized securities gains (losses) arising during the period Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Unrealized losses transferred to held-to-maturity Unrealized Losses on Transfers to Held-to-Maturity from Available-for-Sale, before tax Unrealized Losses on Transfers to Held-to-Maturity from Available-for-Sale, before tax Amortization of net unrealized losses transferred during the period Other Comprehensive Income (Loss), Amortization of Net Unrealized Losses Transferred to Held-to-Maturity from Available-for-Sale, before tax Other Comprehensive Income (Loss), Amortization of Net Unrealized Losses Transferred to Held-to-Maturity from Available-for-Sale, before tax Income tax (expense) benefit Other Comprehensive Income (Loss), Available-for-sale Securities, Tax, Portion Attributable to Parent Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Retained earnings Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Common stock, cash dividends, per share, declared Common Stock, Dividends, Per Share, Declared Business Combinations, Approximate merger consideration to be paid to target in stock Business Combinations, Approximate Dollar Amount of Common stock to be Transferred Business Combinations, Proposed Common Stock to be Transferred Business Combinations, Approximate merger consideration to be paid to target in cash Business Combinations, Proposed Cash to be Paid to Acquire Business Combinations, Proposed Cash to be Paid to Acquire Business Combinations, Maximum dollar price per share to calculate stock merger consideration Business Combinations, Maximum Dollar Amount Per Share to be Transferred on Acquisition Business Combinations, Maximum Dollar Amount Per Share to be Transferred on Acquisition Business Combinations, Minimum dollar price per share to calculate stock merger consideration Business Combinations, Minimum Dollar Amount Per Share to be Transferred on Acquisition Business Combinations, Minimum Dollar Amount Per Share to be Transferred on Acquisition Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Substandard Substandard [Member] Special Mention Special Mention [Member] Doubtful Doubtful [Member] Loss Unlikely to be Collected Financing Receivable [Member] Financing Receivable, Recorded Investment Financing Receivable, Recorded Investment [Line Items] Loans and leases transferred to third parties total principal amount Loans And Leases Transferred To Third Parties Total Principal Amount Loans And Leases Transferred To Third Parties Total Principal Amount Loan participations purchased on the Corporation's balance sheet Loan participations purchased on the Corporation's balance sheet Loan participations purchased on the Corporation's balance sheet Total amount of outstanding loans transferred to third parties as loan participations Total amount of outstanding loans transferred to third parties as loan participations Total amount of outstanding loans transferred to third parties as loan participations Total amount of loan participations remaining on the Corporations balance sheet Total Amount Of Loan Participations Remaining On The Corporations Balance Sheet Total Amount Of Loan Participations Remaining On The Corporations Balance Sheet Loans in the participation sold portfolio, considered impaired Loans in the participation sold portfolio, considered impaired Loans in the participation sold portfolio, considered impaired Certain loans acquired in transfer, carrying amount, net Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net Certain loans acquired in transfer, provision for loan losses Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses Total gross loans and leases receivable Non-accrual troubled debt restructurings Non-accrual Troubled Debt Restructurings Non-accrual Troubled Debt Restructurings Unfunded commitments, troubled debt restructurings Unfunded commitments, troubled debt restructurings Unfunded commitments, troubled debt restructurings Troubled debt restructurings, subsequent default, number of loans Financing Receivable, Modifications, Subsequent Default, Number of Contracts Loans and leases receivable, difference between recorded investment and unpaid principal balance Loans and Leases Receivable, Difference between Recorded Investment and Unpaid Principal Balance Loans and Leases Receivable, Difference between Recorded Investment and Unpaid Principal Balance Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] Credit Quality Indicator [Axis] Accruing loans and leases Performing Financing Receivable [Member] Non-accruing loans and leases Nonperforming Financing Receivable [Member] Financing Receivable, Recorded Investment, Summary of Past Due and Current Loans Receivable Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, Aging [Abstract] Financing Receivable, Recorded Investment, Aging [Abstract] 30-59 days past due Financing Receivable, Recorded Investment, 30 to 59 Days Past Due 60-89 days past due Financing Receivable, Recorded Investment, 60 to 89 Days Past Due Greater than 90 days past due Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due Total past due Financing Receivable, Recorded Investment, Past Due Current Financing Receivable, Recorded Investment, Current Accrual loans and leases Financing Receivable, Recorded Investment, Accrual Status Financing Receivable, Recorded Investment, Accrual Status 30 to 59 days past due, percent of total portfolio Financing Receivable, Recorded Investment, 30 to 59 Days Past Due, Percent of Portfolio Financing Receivable, Recorded Investment, 30 to 59 Days Past Due, Percent of Portfolio 60 to 89 days past due, percent of total portfolio Financing Receivable, Recorded Investment, 60 to 89 Days Past Due, Percent of Portfolio Financing Receivable, Recorded Investment, 60 to 89 Days Past Due, Percent of Portfolio Greater than 90 days past due, percent of portfolio Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due, Percent of Portfolio Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due, Percent of Portfolio Past due, percent of total portfolio Financing Receivable, Recorded Investment, Past Due, Percent of Portfolio Financing Receivable, Recorded Investment, Past Due, Percent of Portfolio Current, percent of total portfolio Financing Receivable, Recorded Investment, Current, Percent of Portfolio Financing Receivable, Recorded Investment, Current, Percent of Portfolio Gross loans, percent of total portfolio Financing Receivable, Recorded Investment, Gross, Percent of Portfolio Financing Receivable, Recorded Investment, Gross, Percent of Portfolio Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Use of Estimates, Policy Use of Estimates, Policy [Policy Text Block] Reclassification, Policy Reclassification, Policy [Policy Text Block] Subsequent Events, Policy Subsequent Events, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Category I Category I [Member] Category I [Member] Category II Category II [Member] Category II [Member] Category III Category III [Member] Category III [Member] Category IV Category IV [Member] Category IV [Member] Total commercial real estate Total consumer and other Category as a % of total portfolio Category Rating as a Percentage of Total Loans and Leases Category Rating as a Percentage of Total Loans and Leases Share-based Compensation, Option and Incentive Plans Policy Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Commercial real estate Consumer and other Financing Receivable, Allowance for Credit Losses Financing Receivable, Allowance for Credit Losses [Line Items] Allowance for credit losses: Financing Receivable, Allowance for Credit Losses [Roll Forward] Beginning balance Financing Receivable, Allowance for Credit Losses Charge-offs Financing Receivable, Allowance for Credit Losses, Write-downs Recoveries Financing Receivable, Allowance for Credit Losses, Recovery Provision Provision for Loan, Lease, and Other Losses Ending balance Ending balance: individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Ending balance: collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Ending balance: loans acquired with deteriorated credit quality Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality Loans and lease receivables: Loans and Leases Receivable, Gross, Carrying Amount [Abstract] Ending balance: individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Ending balance: collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Ending balance: loans acquired with deteriorated credit quality Financing Receivable, Acquired with Deteriorated Credit Quality Allowance as % of gross loans Foreclosed properties at the beginning of the period Loans transferred to foreclosed properties, at lower of cost or fair value Real Estate Owned, Transfer to Real Estate Owned Proceeds from sale of foreclosed properties Proceeds from Sale of Foreclosed Assets Net gain on sale of foreclosed properties Net Gains (Losses) on Other Real Estate Net Gains (Losses) on Other Real Estate Impairment valuation Impairment of Real Estate Foreclosed properties at the end of the period Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Consolidated Balance Sheets - Parenthetical [Abstract] Consolidated Balance Sheets - Parenthetical [Abstract] Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, shares Treasury Stock, Shares Basic earnings per common share Earnings Per Share, Basic [Abstract] Net income Less: earnings allocated to participating securities Undistributed Earnings Allocated to Participating Securities Basic earnings allocated to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Weighted-average common shares outstanding, excluding participating securities Weighted Average Number of Shares Outstanding, Basic Basic earnings per common share Earnings Per Share, Basic Diluted earnings per common share Earnings Per Share, Diluted [Abstract] Earnings allocated to common shareholders Reallocation of undistributed earnings Undistributed Earnings, Diluted Diluted earnings allocated to common shareholders Net Income (Loss) Available to Common Stockholders, Diluted Dilutive effect of share-based awards Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted-average diluted common shares outstanding, excluding participating securities Weighted Average Number of Shares Outstanding, Diluted Diluted earnings per common share Earnings Per Share, Diluted Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Compliance with Regulatory Capital Requirements under Banking Regulations Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Total capital Capital Total capital to risk-weighted assets Capital to Risk Weighted Assets Total capital, Minimum Required for Capital Adequacy Purposes Capital Required for Capital Adequacy Total capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes Capital Required for Capital Adequacy to Risk Weighted Assets Total capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements Capital Required to be Well Capitalized Total capital to risk-weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 capital Tier One Risk Based Capital Tier 1 capital to risk-weighted assets Tier One Risk Based Capital to Risk Weighted Assets Tier 1 capital, Minimum Required for Capital Adequacy Purposes Tier One Risk Based Capital Required for Capital Adequacy Tier 1 capital to risk-weighted assets, Minimum Required for Capital Adequacy Purposes Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Tier 1 capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements Tier One Risk Based Capital Required to be Well Capitalized Tier 1 capital to risk weighted assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 capital Tier One Leverage Capital Tier 1 leverage capital to average assets Tier One Leverage Capital to Average Assets Tier 1 leverage capital, Minimum Required for Capital Adequacy Purposes Tier One Leverage Capital Required for Capital Adequacy Tier 1 leverage capital to average assets, Minimum Required for Capital Adequacy Purposes Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier 1 leverage capital, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements Tier One Leverage Capital Required to be Well Capitalized Tier 1 leverage capital to average assets, Minimum Required to be Well Capitalized Under Prompt Corrective Action Requirements Tier One Leverage Capital Required to be Well Capitalized to Average Assets Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other assets Other Assets [Member] Other liabilities Other Liabilities [Member] Derivatives not designated as hedging instruments, fair value Derivatives, Fair Value [Line Items] Description of location of interest rate derivative instruments not designated as hedging instruments on balance sheet Description of Location of Interest Rate Derivative Instruments Not Designated as Hedging Instruments on Balance Sheet Fair Value, Assets and Liabilities Measured on a Nonrecurring Basis Fair Value, Assets and Liabilities Measured on a Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on a Nonrecurring Basis [Line Items] Total gains (losses) on impaired loans Total Gains (Losses) on Impaired Loans Total Gains (Losses) on Impaired Loans Total gains (losses) on foreclosed properties Fair Value Measurements, Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fair Value Measurements, Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Foreclosed Properties Foreclosed Properties [Table Text Block] Foreclosed Properties [Table Text Block] Fair Value, by Balance Sheet Grouping Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Earnings Per Common Share Earnings Per Share [Text Block] Share-based compensation Share-based Compensation Statement of Cash Flows [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Deferred income taxes, net Deferred Income Tax Expense (Benefit) Provision for loan and lease losses Provision for Loan and Lease Losses Depreciation, amortization and accretion, net Depreciation, Amortization and Accretion, Net Increase in cash surrender value of bank-owned life insurance Bank Owned Life Insurance Income Net loss on foreclosed properties, including impairment valuation Gains (Losses) on Sales of Other Real Estate Excess tax benefit from share-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities (Increase) decrease in accrued interest receivable and other assets Increase (Decrease) in Operating Assets Decrease in accrued interest payable and other liabilities Increase (Decrease) in Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Proceeds from maturities of available-for-sale securities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Proceeds from maturities of held-to-maturity securities Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Purchases of available-for-sale securities Payments to Acquire Available-for-sale Securities Proceeds from sale of foreclosed properties Net increase in loans and leases Payments for (Proceeds from) Loans and Leases Investment in limited partnerships Payments to Acquire Limited Partnership Interests Distributions from limited partnerships Proceeds from Limited Partnership Investments Investment in FHLB Stock Payments to Acquire Federal Home Loan Bank Stock Proceeds from sale of FHLB Stock Proceeds from Sale of Federal Home Loan Bank Stock Purchases of leasehold improvements and equipment, net Payments to Acquire Productive Assets Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Net increase in deposits Increase (Decrease) in Deposits Repayment of FHLB advances Repayments of Federal Home Loan Bank Borrowings Net increase in short-term borrowed funds Proceeds from (Repayments of) Short-term Debt Repayment of subordinated notes payable Early Repayment of Subordinated Debt Excess tax benefit from share-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Cash dividends paid Payments of Ordinary Dividends, Common Stock Exercise of stock options Proceeds from Stock Options Exercised Purchase of treasury stock Payments for Repurchase of Common Stock Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at the beginning of the period Cash and cash equivalents at the end of the period Supplementary cash flow information Supplemental Cash Flow Information [Abstract] Interest paid on deposits and borrowings Interest Paid Income taxes paid Income Taxes Paid Transfer of securities from available-for-sale to held-to-maturity Transfer of Securities from Available-for-Sale to Held-to-Maturity, amortized cost Transfer of Securities from Available-for-Sale to Held-to-Maturity, amortized cost Unrealized loss on transfer from available-for-sale to held-to-maturity Available-for-Sale, Amortized Cost Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] Due in one year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Due in one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis Due in five through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis Due in over ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Amortized cost Available-for-sale Securities, Debt Maturities, Amortized Cost Basis Available-for-Sale, Estimated Fair Value Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Due in one year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Due in one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Due in five through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Due in over ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Held-to-Maturity, Amortized Cost Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract] Due in one year or less Held-to-maturity Securities, Debt Maturities, within One Year, Net Carrying Amount Due in one year through five years Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount Due in five through ten years Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount Due in over ten years Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount Amortized cost Held-to-Maturity, Estimated Fair Value Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Due in one year or less Held-to-maturity Securities, Debt Maturities, Next Twelve Months, Fair Value Due in one year through five years Held-to-maturity Securities, Debt Maturities, Year Two Through Five, Fair Value Due in five through ten years Held-to-maturity Securities, Debt Maturities, Year Six Through Ten, Fair Value Due in over ten years Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Transfer of Securities from Available-for-Sale to Held-to-Maturity, fair value Transfer of Securities from Available-for-Sale to Held-to-Maturity, fair value Transfer of Securities from Available-for-Sale to Held-to-Maturity, fair value Unrealized losses transferred to held-to-maturity Gain or Loss Recognized at Time of Transfer of Securities from Available-for-Sale to Held-to-Maturity Gain or Loss Recognized at Time of Transfer of Securities from Available-for-Sale to Held-to-Maturity Gain or Loss Recognized at Time of Transfer of Securities from Available-for-Sale to Held-to-Maturity Proceeds from sale of available-for-sale securities Proceeds from Sale of Available-for-sale Securities Available-for-sale securities pledged as collateral Available-for-sale Securities Pledged as Collateral Securities in an unrealized loss position, twelve months or greater Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year Other than temporary impairment, Available-for-sale securities Other than Temporary Impairment Losses, Investments, Available-for-sale Securities Held-to-Maturity Securities, Securities in Unrealized Loss Positions, Qualitative Disclosures, Number of Positions 12 months or greater Held-to-Maturity Securities, Securities in Unrealized Loss Positions, Qualitative Disclosures, Number of Positions 12 months or greater Held-to-Maturity Securities, Securities in Unrealized Loss Positions, Qualitative Disclosures, Number of Positions 12 months or greater Other than temporary impairment, Held-to-maturity securities Other than Temporary Impairment Losses, Investments, Held-to-maturity Securities Number of shares available for grant Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Stock options graded vesting minimum period Stock options graded vesting minimum period Stock options graded vesting minimum period Stock options graded vesting maximum period Stock options graded vesting maximum period Stock options graded vesting maximum period Stock options contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Maximum Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Maximum Contractual Term Stock-based compensation related to stock options recognized in the consolidated financial statements Stock or Unit Option Plan Expense Deferred compensation expense yet to be recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Period of time that deferred compensation expense will be recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Fair Value of Financial Instruments, Policy Fair Value of Financial Instruments, Policy [Policy Text Block] Foreclosed Assets Policy Finance, Loan and Lease Receivables, Held for Investments, Foreclosed Assets Policy [Policy Text Block] Fair Value Measurement, Policy Fair Value Measurement, Policy [Policy Text Block] Financing Receivable, Troubled Debt Restructuring [Axis] Financing Receivable, Troubled Debt Restructuring [Axis] Financing Receivable, Troubled Debt Restructuring [Domain] Financing Receivable, Troubled Debt Restructuring [Domain] Extension of term Troubled Debt Restructuring, Extension of Term [Member] Troubled Debt Restructuring, Extension of Term Combination of extension and interest rate concession Troubled Debt Restructuring, Combination of Extension of Term and Interest Rate Concession [Member] Troubled Debt Restructuring, Combination of Extension of Term and Interest Rate Concession [Member] Recorded Investment Income Statement [Abstract] Interest income: Interest and Dividend Income, Operating [Abstract] Loans and leases Interest and Fee Income, Loans and Leases Securities income Interest and Dividend Income, Securities, Operating, Available-for-sale Short-term investments Interest Income, Deposits with Financial Institutions Total interest income Interest and Dividend Income, Operating Interest expense: Interest Expense [Abstract] Deposits Interest Expense, Deposits Notes payable and other borrowings Interest Expense Federal Home Loan Bank and Other Borrowings Notes payable and other borrowings Junior subordinated notes Interest Expense, Junior Subordinated Debentures Total interest expense Interest Expense Net interest income Interest Income (Expense), Net Net interest income after provision for loan and lease losses Interest Income (Expense), after Provision for Loan Loss Non-interest income: Noninterest Income [Abstract] Trust and investment services fee income Fees and Commissions, Fiduciary and Trust Activities Service charges on deposits Fees and Commissions, Depositor Accounts Loan fees Fees and Commissions, Other Increase in cash surrender value of bank-owned life insurance Other Noninterest Income, Other Operating Income Total non-interest income Noninterest Income Non-interest expense: Noninterest Expense [Abstract] Compensation Labor and Related Expense Occupancy Occupancy, Net Professional fees Professional Fees Expense Professional fees Data processing Information Technology and Data Processing Marketing Marketing and Advertising Expense Equipment Equipment Expense FDIC insurance Federal Deposit Insurance Corporation Premium Expense Collateral liquidation costs Collateral Liquidation Costs Collateral liquidation costs Net loss on foreclosed properties Other Other Noninterest Expense Total non-interest expense Noninterest Expense Income before income tax expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net income Earnings per common share: Basic Diluted Dividends declared per share Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Deposits [Abstract] Deposits Deposits [Table Text Block] Deposits [Table Text Block] Nature of Operations and Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Description of possible effects of noncompliance or less than adequately capitalized Description of Material Affects of Noncompliance Recorded investment Impaired Financing Receivable, Recorded Investment [Abstract] With no impairment reserve recorded Impaired Financing Receivable, with No Related Allowance, Recorded Investment With impairment reserve recorded Impaired Financing Receivable, with Related Allowance, Recorded Investment Total Impaired Financing Receivable, Recorded Investment Unpaid principal balance Impaired Financing Receivable, Unpaid Principal Balance [Abstract] With no impairment reserve recorded Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance With impairment reserve recorded Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Total Impaired Financing Receivable, Unpaid Principal Balance Impairment reserve Impairment reserve [Abstract] Impairment reserve [Abstract] Impairment reserve Impaired Financing Receivable, Related Allowance Average recorded investment(1) Impaired Financing Receivable, Average Recorded Investment [Abstract] With no impairment reserve recorded Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment With impairment reserve recorded Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Total Impaired Financing Receivable, Average Recorded Investment Foregone interest income Foregone interest income [Abstract] Foregone interest income [Abstract] With no impairment reserve recorded Impaired Financing Receivable, with No Related Allowance, Foregone Interest Income Impaired Financing Receivable, with No Related Allowance, Foregone Interest Income With impairment reserve recorded Impaired Financing Receivable, with Related Allowance, Foregone Interest Income Impaired Financing Receivable, with Related Allowance, Foregone Interest Income Foregone interest income Impaired Financing Receivable, Foregone Interest Income Impaired Financing Receivable, Foregone Interest Income Interest income recognized Impaired Financing Receivable, Interest Income, Accrual Method [Abstract] With no impairment reserve recorded Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method With impairment reserve recorded Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method Total Impaired Financing Receivable, Interest Income, Cash Basis Method Net foregone interest income Net foregone interest income [Abstract] Net foregone interest income [Abstract] With no impairment reserve recorded Impaired Financing Receivable, with No Related Allowance, Net Foregone Interest Income Impaired Financing Receivable, with No Related Allowance, Net Foregone Interest Income With impairment reserve recorded Impaired Financing Receivable, with Related Allowance, Net Foregone Interest Income Impaired Financing Receivable, with Related Allowance, Net Foregone Interest Income Total Impaired Financing Receivable, Net Foregone Interest Income Impaired Financing Receivable, Net Foregone Interest Income Loan Composition Schedule Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Financing Receivable by Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Past Due Financing Receivables Past Due Financing Receivables [Table Text Block] Schedule of Financing Receivables, Non Accrual Status Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Troubled Debt Restructurings on Financing Receivables Troubled Debt Restructurings on Financing Receivables [Table Text Block] Troubled Debt Restructurings by Modification Type Troubled Debt Restructurings by Modification Type [Table Text Block] Troubled Debt Restructurings by Modification Type [Table Text Block] Impaired Financing Receivables Impaired Financing Receivables [Table Text Block] Allowance for Credit Losses on Financing Receivables Allowance for Credit Losses on Financing Receivables [Table Text Block] Deposits [Table] Deposit [Table] Deposit [Table] Deposit Type [Axis] Deposit Type [Axis] Deposit Type [Axis] Deposit Type [Domain] Deposit Type [Domain] [Domain] for Deposit Type [Axis] Non-interest-bearing transaction accounts Non-interest-bearing Transaction Accounts [Member] Non-interest-bearing Transaction Accounts [Member] Interest-bearing transaction accounts Interest-bearing Transaction Accounts [Member] Interest-bearing Transaction Accounts [Member] Money market accounts Money Market Accounts [Member] Money Market Accounts [Member] Certificates of deposit Non-brokered Certificates of Deposit [Member] Non-brokered Certificates of Deposit [Member] Brokered certificates of deposit Brokered Certificates of Deposit [Member] Brokered Certificates of Deposit [Member] Deposits [Line Items] Deposit [Line Items] [Line Items] for Deposit [Table] Deposits Deposits, weighted average balance Weighted Average Balance, Deposits Weighted Average Balance, Deposits Deposits, weighted average interest rate during the period Deposits, Weighted Average Interest Rate During the Period Deposits, Weighted Average Interest Rate During the Period Derivatives, Policy Derivatives, Policy [Policy Text Block] Composition of Borrowed Funds [Table] Composition of Borrowed Funds [Table] Composition of Borrowed Funds [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Federal funds purchased Federal Funds Purchased [Member] FHLB advances Federal Home Loan Bank Advances [Member] Subordinated notes payable Subordinated Debt [Member] Junior subordinated notes Junior Subordinated Debt [Member] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Short-term borrowings Short-term Debt [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Long-term borrowings Long-term Debt [Member] Composition of Borrowed Funds [Line Items] Composition of Borrowed Funds [Line Items] [Line Items] for Composition of Borrowed Funds [Table] Borrowed funds Borrowed Funds Borrowed funds, weighted average balance Borrowed Funds, Weighted Average Balance Borrowed Funds, Weighted Average Balance Borrowed funds, interest rate during period Debt Instrument, Interest Rate During Period Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entities [Table] Entities [Table] Entity Information [Line Items] Entity Information [Line Items] Average anti-dilutive employee share based awards Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Number of Restricted Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Nonvested balance, beginning Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Nonvested balance, ending Weighted Average Grant-Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Nonvested balance, beginning Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Nonvested balance, ending Common stock Common Stock [Member] Additional paid-in capital Additional Paid-in Capital [Member] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss) [Member] Treasury stock Treasury Stock [Member] Common stock shares outstanding Beginning balance Stockholders' Equity Attributable to Parent Other comprehensive income Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Exercise of stock options, shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Share-based compensation - restricted shares, shares issued Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Share-based compensation - restricted shares Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Share-based compensation - tax benefits Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net Cash dividends ($0.28 per share during 2013 and $.42 per share during 2014) Dividends, Common Stock, Cash Treasury stock purchased, shares Treasury Stock, Shares, Acquired Treasury stock purchased Treasury Stock, Value, Acquired, Cost Method Common stock shares outstanding Ending balance Schedule of Available-for-sale Securities Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Schedule of Held-to-maturity Securities Held-to-maturity Securities [Table Text Block] Investments Classified by Contractual Maturity Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of Unrealized Loss on Investments Schedule of Unrealized Loss on Investments [Table Text Block] Fair Value Disclosures Fair Value Disclosures [Text Block] FHLB Advances, Other Borrowings and Junior Subordinated Notes Payable Debt Disclosure [Text Block] Statement of Financial Position [Abstract] Assets Assets [Abstract] Cash and due from banks Cash and Due from Banks Short-term investments Interest-bearing Deposits in Banks and Other Financial Institutions Cash and cash equivalents Securities available-for-sale, at fair value Loans and leases receivable, net of allowance for loan and lease losses of $14,015 and $13,901, respectively Leasehold improvements and equipment, net Property, Plant and Equipment, Net Foreclosed properties Cash surrender value of bank-owned life insurance Investment in Federal Home Loan Bank stock, at cost Accrued interest receivable and other assets Other Assets Total assets Assets Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Federal Home Loan Bank and other borrowings Junior subordinated notes Accrued interest payable and other liabilities Other Liabilities Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $0.01 par value, 2,500,000 shares authorized, none issued or outstanding Preferred Stock, Value, Issued Common stock, $0.01 par value, 25,000,000 shares authorized, 4,109,080 and 4,106,084 shares issued, 3,945,220 and 3,943,997 shares outstanding at June 30, 2014 and December 31, 2013, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Treasury stock, 163,860 and 162,087 shares at June 30, 2014 and December 31, 2013, respectively, at cost Treasury Stock, Value Total stockholders’ equity Total liabilities and stockholders’ equity Liabilities and Equity Schedule of Debt Schedule of Debt [Table Text Block] Deposits Deposit Liabilities Disclosures [Text Block] Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding, beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised Expired Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Outstanding, ending balance Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding, beginning Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Expired Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Forfeited Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Outstanding, ending Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted Average Remaining Contractual Life (Years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term