Statement of Financial Position [Abstract] Statement [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Statement [Line Items] Statement [Line Items] ASSETS Assets [Abstract] Held-to-maturity securities, fair value Held-to-maturity Securities, Fair Value Preferred Stock: Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Preferred stock, par value ($ per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, share authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common Stock: Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Common Stock, No Par Value Common Stock, No Par Value Common stock, share authorized Common Stock, Shares Authorized Common stock, share issued Common Stock, Shares, Issued Common stock, share outstanding Common Stock, Shares, Outstanding Comprehensive Income [Abstract] Comprehensive Income [Abstract] Comprehensive Income [Text Block] Comprehensive Income (Loss) Note [Text Block] Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Preferred Stock [Member] Preferred Stock [Member] Common Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) [Member] AOCI Attributable to Parent [Member] Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance Stockholders' Equity Attributable to Parent Common Stock, Shares, Outstanding Net Income Net Income (Loss) Attributable to Parent Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax Cash dividends declared, common stock Dividends, Common Stock, Cash Stock-based compensation costs Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition Issuance of common stock upon vesting of restricted stock units, net of shares withheld for payroll taxes, value Restricted Stock, Value, Shares Issued Net of Tax Withholdings Issuance of common stock upon vesting of restricted stock units, net of shares withheld for payroll taxes, shares Restricted Stock, Shares Issued Net of Shares for Tax Withholdings Excess tax benefits from vesting of restricted stock units Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Balance Common Stock, Shares, Outstanding Derivatives [Abstract] Derivatives [Abstract] Derivative [Text Block] Derivative Instruments and Hedging Activities Disclosure [Text Block] Income Statement [Abstract] Interest income: Interest and Dividend Income, Operating [Abstract] Loans, including fees Interest and Fee Income, Loans and Leases Investment securities: Interest and Dividend Income, Securities, by Taxable Status [Abstract] Taxable Interest Income, Securities, Operating, Taxable Tax-exempt Interest Income, Securities, Operating, Tax Exempt Federal funds sold Interest Income, Federal Funds Sold Total interest income Interest and Dividend Income, Operating Interest expense: Interest Expense [Abstract] Deposits Interest Expense, Deposits Federal funds purchased Interest Expense, Federal Funds Purchased Short-term borrowings Interest Expense, Short-term Borrowings Subordinated notes Interest Expense, Subordinated Notes and Debentures Federal Home Loan Bank advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-term Long-term debt Interest Expense, Long-term Debt Total interest expense Interest Expense Net interest income Interest Income (Expense), Net Provision for loan losses Provision for Loan and Lease Losses Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss Noninterest income: Noninterest Income [Abstract] Service charges on deposit accounts Fees and Commissions, Depositor Accounts Debit card usage fees Fees and Commissions, Debit Cards Trust services Fees and Commissions, Fiduciary and Trust Activities Increase in cash value of bank-owned life insurance Bank Owned Life Insurance Income Gain from bank-owned life insurance Gain from bank-owned life insurance Gain from bank-owned life insurance Realized investment security gains (losses), net Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments Other income Noninterest Income, Other Operating Income Total noninterest income Noninterest Income Noninterest expense: Noninterest Expense [Abstract] Salaries and employee benefits Labor and Related Expense Occupancy Occupancy, Net Data processing Information Technology and Data Processing FDIC insurance Federal Deposit Insurance Corporation Premium Expense Professional fees Professional Fees Director fees Noninterest Expense Directors Fees Other expenses Other Noninterest Expense Total noninterest expense Noninterest Expense Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income taxes Income Tax Expense (Benefit) Net income Basic earnings per common share Earnings Per Share, Basic Diluted earnings per common share Earnings Per Share, Diluted Cash dividends declared per common share Common Stock, Dividends, Per Share, Declared Investments, Debt and Equity Securities [Abstract] Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract] Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] Due in one year or less, amortized cost Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Amortized Cost Basis Due after one year through five years, amortized cost Available-for-sale Securities, Debt Maturities, Rolling Year Two Through Five, Amortized Cost Basis Due after five years through ten years, amortized cost Available-for-sale Securities, Debt Maturities, Rolling Year Six Through Ten, Amortized Cost Basis Due after ten years, amortized cost Available-for-sale Securities, Debt Maturities, Rolling after Year Ten, Amortized Cost Basis Subtotal before securities without single maturities, amortized cost Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis Collateralized mortgage obligations and mortgage-backed securities, amortized cost Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis Equity securities, amortized cost Available-for-sale Equity Securities, Amortized Cost Basis Investment securities available for sale, amortized cost Available-for-sale Securities, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Due in one year or less, fair value Available-for-sale Securities, Debt Maturities, Next Rolling Twelve Months, Fair Value Due after one year through five years, fair value Available-for-sale Securities, Debt Maturities, Rolling Year Two Through Five, Fair Value Due after five years through ten years, fair value Available-for-sale Securities, Debt Maturities, Rolling Year Six Through Ten, Fair Value Due after ten years, fair value Available-for-sale Securities, Debt Maturities, Rolling after Year Ten, Fair Value Subtotal before securities without single maturities, fair value Available-for-sale Securities, Debt Maturities, Single Maturity Date Collateralized mortgage obligations and mortgage-backed securities, fair value Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value Equity securities, fair value Available-for-sale Securities, Equity Securities Investment securities available for sale, fair value Available-for-sale Securities Held-to-maturity Securities, Debt Maturities, Amortized Cost Basis [Abstract] Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract] Due after one year through five years, amortized cost Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount Due after five years through ten years, amortized cost Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount Due after ten years, amortized cost Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount Investment securities held to maturity, amortized cost Held-to-maturity Securities Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract] Held-to-maturity Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract] Due after one year through five years, fair value Held-to-maturity Securities, Debt Maturities, Rolling Year Two Through Five, Fair Value Due after five years through ten years, fair value Held-to-maturity Securities, Debt Maturities, Rolling Year Six Through Ten, Fair Value Due after ten years, fair value Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Fair Value Held-to-maturity securities, fair value Loans and Allowance for Loan Losses [Abstract] Note 7. Impaired Loans and Allowance for Loan Losses [Abstract] Number of loan modifications considered troubled debt restructuring Financing Receivable, Modifications, Number of Contracts Loans, modifications, pre-modification recorded investment Financing Receivable, Modifications, Pre-Modification Recorded Investment Loans, modifications, post-modification recorded investment Financing Receivable, Modifications, Post-Modification Recorded Investment 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] US Government Agencies Debt Securities [Member] US Treasury and Government [Member] State and political subdivisions [Member] US States and Political Subdivisions Debt Securities [Member] Collateralized mortgage obligations [Member] Collateralized Mortgage Obligations [Member] Mortgage-backed securities [Member] Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Trust preferred securities [Member] Trust preferred securities [Member] Trust preferred securities. Corporate notes and equity securities [Member] Corporate notes and equity securities [Member] Corporate notes and equity securities [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Available-for-sales securities in unrealized loss positions, qualitative disclosure, number of positions, greater than or equal to one year Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year Available-for-sale securities, continuous unrealized loss position, less than 12 months, fair value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale securities, continuous unrealized loss position, less than 12 months, gross unrealized losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Available-for-sale securities, continuous unrealized loss position, 12 months or longer, fair value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Available-for-sale securities, continuous unrealized loss position, 12 months or longer, gross unrealized losses Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Available-for-sale securities, total, continuous unrealized loss position, fair value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale securities, continuous unrealized loss position, gross unrealized losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Class of Loan [Axis] Class of Financing Receivable, Type [Axis] Loan Allowance [Domain] Class of Financing Receivable, Type [Domain] Commercial loans [Member] Commercial Loan [Member] Real estate [Member] Real Estate [Member] Construction, land and land development [Member] Construction Land and Land Development [Member] Construction Land and Land Development [Member] 1-4 family residential first mortgages [Member] Residential Mortgage [Member] Home equity [Member] Home Equity Loan [Member] Commercial real estate [Member] Commercial Real Estate [Member] Consumer and other loans [Member] Consumer and Other Loans [Member] Consumer and Other Loans [Member] Loans Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Loans receivable, gross Loans and Leases Receivable, Gross Net unamortized fees and costs Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums Loans, net of unamortized fees and costs Loans and Leases Receivable, Net of Deferred Income Schedule of Impaired Loans [Table] Schedule of Impaired Financing Receivable [Table] Class of Loan [Domain] Loans, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Impaired loans, with no related allowance, recorded investment Impaired Financing Receivable, with No Related Allowance, Recorded Investment Impaired loans, with no related allowance, unpaid principal balance Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Impaired loans, with related allowance, recorded investment Impaired Financing Receivable, with Related Allowance, Recorded Investment Impaired loans, with related allowance, unpaid principal balance Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Impaired loans, recorded investment Impaired Financing Receivable, Recorded Investment Impaired loans, unpaid principal balance Impaired Financing Receivable, Unpaid Principal Balance Impaired loans, related allowance Impaired Financing Receivable, Related Allowance Number of borrowers, impaired loans Number of Borrowers, Impaired Loans Number of Different Borrowers, Impaired Loans Impaired loans, commitment to lend Loans, Impaired, Commitment to Lend Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans which have been classified as impaired. Earnings Per Share [Abstract] Weighted average common shares outstanding (shares) Weighted Average Number of Shares Outstanding, Basic Weighted average effect of restricted stock units outstanding (shares) Weighted Average Number of Shares, Restricted Stock Diluted weighted average common shares outstanding (shares) Weighted Average Number of Shares Outstanding, Diluted Antidilutive securities excluded from computation of earnings per share, Amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Statement of Comprehensive Income [Abstract] Accumulated Other Comprehensive Income [Axis] Accumulated Other Comprehensive Income [Axis] The components of accumulated other comprehensive income. Components of Accumulated Other Comprehensive Income [Domain] Components of Accumulated Other Comprehensive Income [Domain] Components of Accumulated Other Comprehensive Income [Domain] Unrealized gains (losses) on available for sale securities [Member] Unrealized gains losses on securities without OTTI, net of tax [Member] Component of accumulated other comprehensive income which includes unrealized gains and losses on securities without OTTI. Unrealized gains (losses) on derivatives [Member] Unrealized Gains Losses on Derivatives [Member] Unrealized Gains Losses on Derivatives [Member] Unrealized holding gains arising during the period Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Less: reclassification adjustment for net gains realized in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Less: reclassification adjustment for amortization of net unrealized gains to interest income on securities transferred from available for sale to held to maturity Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Amortization of Net Unrealized Gains, Held to Maturity Securities The reclassification adjustment from AOCI for the amortization of net unrealized gains on securities transferred from the investment for sale investment category to the held to maturity investment category realized in net income. Income tax (expense) Other Comprehensive Income (Loss), Available-for-sale Securities, Tax Other comprehensive income (loss) on available for sale securities Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Unrealized (losses) on derivatives arising during the period Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Less: reclassification adjustment for net loss on derivatives realized in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax Less: reclassification adjustment for amortization of derivative termination costs Other comprehensive income (loss), reclassification adjustment from AOCI for amortization of derivative termination costs Other comprehensive income (loss), reclassification adjustment from AOCI for amortization of derivative termination costs Income tax benefit Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Other comprehensive (loss) on derivatives Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Total other comprehensive income (loss) Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Components of Deferred Tax Assets and Liabilities [Abstract] Deferred tax assets, allowance for loan losses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses Deferred tax assets, intangibles Deferred Tax Assets, Goodwill and Intangible Assets Deferred tax assets, accrued expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Deferred tax assets, restricted stock compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Deferred tax assets, net unrealized losses on interest rate swaps Deferred Tax Assets, Derivative Instruments Deferred tax assets, state net operating loss carryforward Deferred Tax Assets, Operating Loss Carryforwards, State and Local Deferred tax assets, capital loss carryforward Deferred Tax Assets, Capital Loss Carryforwards Deferred tax assets, other Deferred Tax Assets, Other Deferred tax assets, gross Deferred Tax Assets, Gross Deferred tax liabilities, net deferred loan fees and costs Deferred Tax Liabilities, Deferred Expense, Deferred Financing Costs Deferred tax liabilities, premises and equipment Deferred Tax Liabilities, Property, Plant and Equipment Deferred tax liabilities, net unrealized gains on securities available for sale Deferred Tax Liabilities, Other Comprehensive Income Deferred tax liabilities, other Deferred Tax Liabilities, Other Deferred tax liabilities, gross Deferred Tax Liabilities, Gross Deferred tax assets, net, before valuation allowance Deferred Tax Assets, Net, Before Valuation Allowance Net deferred tax assets before valuation allowance Valuation allowance Deferred Tax Assets, Valuation Allowance Net deferred tax assets Deferred Tax Assets, Net Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Loans, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Loans, modifications Financing Receivable, Modifications, Recorded Investment Number of troubled debt restructured loans included in nonaccrual Number of Troubled Debt Restructured Loans Included in Nonaccrual Number of troubled debt restructured loans included in the nonaccrual category Amount of troubled debt restructured loans included in nonaccrual Troubled Debt Restructured Loans Included in Nonaccrual Amount of troubled debt restructured loans included in the nonaccrual category Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies [Text Block] Commitments and Contingencies Disclosure [Text Block] Earnings per Common Share [Text Block] Earnings Per Share [Text Block] Loans, modifications, subsequent default, number of contracts Financing Receivable, Modifications, Subsequent Default, Number of Contracts Available-for-sale Securities [Abstract] Financial Instrument [Axis] Financial Instrument [Axis] Types of Financial Instruments [Domain] Financial Instruments [Domain] Securities pledged as collateral [Member] Securities Pledged as Collateral [Member] Investment securities available for sale, amortized cost Statement of Cash Flows [Abstract] Cash Flows from 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] Net amortization and accretion Net amortization and accretion Net amortization and accretion of discounts and premiums on investments and amortization of prepayment penalties related to FHLB advances. (Gain) loss on disposition of premises and equipment Gain (Loss) on Disposition of Property Plant Equipment Investment securities gains, net Stock-based compensation Share-based Compensation Increase in cash value of bank-owned life insurance Gain from bank-owned life insurance Depreciation Depreciation Deferred income taxes Deferred Income Tax Expense (Benefit) Excess tax benefits from vesting of restricted stock units Excess Tax Benefit from Share-based Compensation, Operating Activities Change in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Decrease (increase) in accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Decrease in other assets Increase (Decrease) in Other Operating Assets Increase (decrease) in accrued expenses and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash Flows from Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Proceeds from sales of securities available for sale Proceeds from Sale of Available-for-sale Securities Proceeds from maturities and calls of investment securities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Purchases of securities available for sale Payments to Acquire Available-for-sale Securities Purchases of Federal Home Loan Bank stock Payments to Acquire Federal Home Loan Bank Stock Proceeds from redemption of Federal Home Loan Bank stock Proceeds from Sale of Federal Home Loan Bank Stock Net increase in loans Payments for (Proceeds from) Loans and Leases Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Proceeds of principal and earnings from bank-owned life insurance Proceeds from Life Insurance Policies Proceeds from settlement of other assets Proceeds from settlement of other assets Proceeds from settlement of other assets, settlement of pending investment security sale. Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations Cash Flows from Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Net increase in deposits Increase (Decrease) in Deposits Net increase (decrease) in federal funds purchased Increase (Decrease) in Federal Funds Purchased Net increase (decrease) in short-term borrowings Proceeds from (Repayments of) Short-term Debt Principal payments on long-term debt Repayments of Long-term Debt Interest rate swap termination costs paid Payments for Hedge, Financing Activities Common stock dividends paid Payments of Ordinary Dividends, Common Stock Restricted stock units withheld for payroll taxes Payments Related to Tax Withholding for Share-based Compensation Excess tax benefits from vesting of restricted stock units Excess Tax Benefit from Share-based Compensation, Financing Activities Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and Cash Equivalents Cash and Cash Equivalents [Abstract] Ending Cash, Cash Equivalents, and Federal Funds Sold Supplemental Disclosures of Cash Flow Information: Supplemental Cash Flow Information [Abstract] Cash payments for interest Interest Paid Cash payments for income taxes Income Taxes Paid Schedule of Loans, 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] Pass [Member] Pass [Member] Watch [Member] Special Mention [Member] Substandard [Member] Substandard [Member] Doubtful [Member] Doubtful [Member] Loans, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Loans Investment Securities [Text Block] Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value, Assets Measured on Recurring Basis [Table Text Block] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fair Value Measurements, Nonrecurring [Table Text Block] Fair Value Measurements, Nonrecurring [Table Text Block] Carrying Amounts And Approximate Fair Values Of Financial Instruments [Table Text Block] Fair Value, by Balance Sheet Grouping [Table Text Block] Investment Securities [Abstract] Proceeds from sales Gross gains on sales Available-for-sale Securities, Gross Realized Gains Gross losses on sales Available-for-sale Securities, Gross Realized Losses Schedule of Loans, Method of Impairment [Table] Schedule of Financing Receivable, Method of Impairment [Table] Schedule of Financing Receivable, Method of Impairment [Table] Loans, Allowance for Loan Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Loans, individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Loans, collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Loans Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as Hedging Instrument [Member] Designated as Hedging Instrument [Member] Derivative Instrument Risk [Axis] Derivative Instrument [Axis] Derivative Contract Type [Domain] Derivative Contract [Domain] Interest Rate Swap [Member] Interest Rate Swap [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Other Income [Member] Other Income [Member] Interest Expense [Member] Interest Expense [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash Flow Hedging [Member] Cash Flow Hedging [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Unrealized gain (loss) on interest rate cash flow hedges, pre-tax, accumulated other comprehensive income (loss) Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss) Cash flow hedge gain (loss) reclassified to interest expense, net Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion Gain (loss) on cash flow hedge ineffectiveness, net Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net Unrealized Gain (Loss) on Investments [Table Text Block] Unrealized Gain (Loss) on Investments [Table Text Block] Investments Classified by Contractual Maturity Date [Table Text Block] Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of Realized Gain (Loss) [Table Text Block] Schedule of Realized Gain (Loss) [Table Text Block] Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of Unrealized Loss on Investments [Table Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of Accounting, Policy [Policy Text Block] Basis of Accounting, Policy [Policy Text Block] Use of Estimates, Policy [Policy Text Block] Use of Estimates, Policy [Policy Text Block] Consolidation, Policy [Policy Text Block] Consolidation, Policy [Policy Text Block] Reclassifications, Policy [Policy Text Block] Reclassification, Policy [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] Earnings Per Share, Policy [Policy Text Block] Earnings Per Share, Policy [Policy Text Block] Loans and Leases Receivable, Origination Fees, Discounts or Premiums, and Direct Costs to Acquire Loans Policy [Policy Text Block] Loans and Leases Receivable, Origination Fees, Discounts or Premiums, and Direct Costs to Acquire Loans Policy [Policy Text Block] Loans and Leases Receivable, Nonaccrual Loan and Lease Status, Policy [Policy Text Block] Loans and Leases Receivable, Nonaccrual Loan and Lease Status, Policy [Policy Text Block] Loans and Leases Receivable, Troubled Debt Restructuring Policy [Policy Text Block] Loans and Leases Receivable, Troubled Debt Restructuring Policy [Policy Text Block] Impaired Financing Receivable, Policy [Policy Text Block] Impaired Financing Receivable, Policy [Policy Text Block] Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Fair Value Measurement, Policy [Policy Text Block] Fair Value Measurement, Policy [Policy Text Block] Fair Value Transfer, Policy [Policy Text Block] Fair Value Transfer, Policy [Policy Text Block] Fair Value of Financial Instruments, Policy [Policy Text Block] Fair Value of Financial Instruments, Policy [Policy Text Block] Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block] Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Commitments and Contingencies Schedule of Fair Value, Off-balance Sheet Risks [Table] Commitments to extend credit [Member] Commitments to Extend Credit [Member] Standby letters of credit [Member] Standby Letters of Credit [Member] Commitments [Line Items] Loss Contingencies [Line Items] Outstanding loan commitments Unused Commitments to Extend Credit Summary Of Outstanding Commitments To Extend Credit And Letters Of Credit [Table Text Block] Summary Of Outstanding Commitments To Extend Credit And Letters Of Credit [Table Text Block] Summary Of Outstanding Commitments To Extend Credit And Letters Of Credit [Table Text Block] Schedule of Past Due Loans [Table] Schedule of Financing Receivables Past Due [Table] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Domain] Financing Receivables, Period Past Due [Domain] Financing Receivables, 30 to 59 Days Past Due [Member] Financing Receivables, 30 to 59 Days Past Due [Member] Financing Receivables, 60 to 89 Days Past Due [Member] Financing Receivables, 60 to 89 Days Past Due [Member] Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Loans, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, Past Due [Line Items] Loans, recorded investment, past due Financing Receivable, Recorded Investment, Past Due Loans, recorded investment, current Financing Receivable, Recorded Investment, Current Loans, recorded investment, nonaccrual status Financing Receivable, Recorded Investment, Nonaccrual Status Schedule of Held-to-maturity Securities [Table] Schedule of Held-to-maturity Securities [Table] Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-maturity Securities [Line Items] Investment securities held to maturity Held-to-maturity securities, gross unrealized gains Held-to-maturity Securities, Accumulated Unrecognized Holding Gain Held-to-maturity securities, gross unrealized losses Held-to-maturity Securities, Accumulated Unrecognized Holding Loss Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Derivative [Table] Derivative [Table] Scenario, Forecast [Member] Scenario, Forecast [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Liabilities [Member] Other Liabilities [Member] Hedging Instrument, Maturity Date [Axis] Hedging Instrument, Maturity Date [Axis] Hedging Instrument, Maturity Date [Axis] Hedging Instrument, Maturity Date [Domain] Hedging Instrument, Maturity Date [Domain] [Domain] for Hedging Instrument, Maturity Date [Axis] Maturity date September 21, 2020 [Member] Maturity date September 21, 2020 [Member] Maturity date September 21, 2020 [Member] Terminated interest rate swap [Member] Terminated interest rate swap [Member] Terminated interest rate swap [Member] Derivative [Line Items] Derivative [Line Items] Derivative instruments, gain (loss) reclassification from AOCI to interest expense, estimated net amount to be transferred Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred Derivative, notional amount Derivative, Notional Amount Collateral posted from counterparty Collateral Already Posted, Aggregate Fair Value Interest rate cash flow hedge at fair value Interest Rate Cash Flow Hedge Liability at Fair Value Receive rate Derivative, Variable Interest Rate Pay rate Derivative, Fixed Interest Rate Deferred Income Taxes [Text Block] Income Tax Disclosure [Text Block] Schedule of Allowance for Loan Losses by Impairment Method [Table] Schedule of Allowance for Loan Losses by Impairment Method [Table] Schedule of Allowance for Loan Losses by Impairment Method [Table] Allowance for loan losses, individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Allowance for loan losses, collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Allowance for loan losses Loans and Leases Receivable, Allowance Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Fair Value Disclosures [Text Block] Fair Value Disclosures [Text Block] Schedule of Changes in Each Component of Accumulated Other Comprehensive Income [Table] Accumulated Other Comprehensive Income (Loss) [Table] Unrealized gains (losses) on securities [Member] Unrealized gains (losses) on securities [Member] Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Unrealized gains (losses) on derivatives [Member] Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Accumulated other comprehensive income (loss) [Member] Schedule of Changes in Components of Accumulated Other Comprehensive Income [Line Items] Schedule of Changes in Components of Accumulated Other Comprehensive Income [Line Items] Accumulated Other Comprehensive Income, Changes [Roll Forward] Accumulated Other Comprehensive Income, Changes [Roll Forward] Accumulated other comprehensive income (loss), balance beg. of period Accumulated Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss) before reclassifications, net of tax Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Amounts reclassified from accumulated other comprehensive income, net of tax. Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Accumulated other comprehensive income (loss), balance end of period Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, measurements, recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Transfers between Levels, Fair Value Disclosure Transfers between Levels, Fair Value Disclosure Amount of transfers of assets measured on a recurring basis between Levels of the fair value hierarchy. Loans and Allowance for Loan Losses [Text Block] Financing Receivables [Text Block] U.S. government agencies and corporations State and political subdivisions Collateralized mortgage obligations Mortgage-backed securities Trust preferred securities Corporate notes and equity securities [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair value, inputs, level 1 [Member] Fair Value, Inputs, Level 1 [Member] Fair value, inputs, level 2 [Member] Fair Value, Inputs, Level 2 [Member] Fair value, inputs, level 3 [Member] Fair Value, Inputs, Level 3 [Member] Investment securities available for sale, fair value Derivative liability Derivative Liability Schedule of Loans [Table Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Troubled Debt Restructurings on Loans Receivables [Table Text Block] Troubled Debt Restructurings on Financing Receivables [Table Text Block] Impaired Loans [Table Text Block] Impaired Financing Receivables [Table Text Block] Schedule of Impaired Loans With and Without an Allowance [Table Text Block] Schedule of Impaired Financing Receivables With and Without an Allowance 2 [Table Text Block] [Table Text Block] Schedule of Impaired Financing Receivables With and Without an Allowance [Table Text Block] [Table Text Block] Past Due Loans [Table Text Block] Past Due Financing Receivables [Table Text Block] Loan Credit Quality Indicators [Table Text Block] Financing Receivable Credit Quality Indicators [Table Text Block] Allowance for Loan Losses [Table Text Block] Allowance for Credit Losses on Financing Receivables [Table Text Block] Allowance for Loan Losses by Impairment Method [Table Text Block] Allowance for Loan Loss by Impairment Method [Table Text Block] Allowance for Loan Loss by Impairment Method [Table Text Block] Loans by Impairment Method [Table Text Block] Financing Receivables by Impairment Method [Table Text Block] Financing Receivables by Impairment Method [Table Text Block] 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 Held-to-maturity securities, continuous unrealized loss position, less than 12 months, fair value Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Held-to-maturity securities, continuous unrealized loss position, less than 12 months, gross unrealized losses Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Held-to-maturity securities, continuous unrealized loss position, 12 months or longer, fair value Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Held-to-maturity securities, continuous unrealized loss position, 12 months or longer, gross unrealized losses Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Held-to-maturity securities, continuous unrealized loss position, fair value Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value Held-to-maturity securities, continuous unrealized loss position, gross unrealized losses Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period Date Document Period End Date Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Current Fiscal Year End Date Current Fiscal Year End Date Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Schedule of Loans, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Loans, Allowance for Credit Losses [Roll Forward] Financing Receivable, Allowance for Credit Losses [Roll Forward] Allowance for loan losses, beginning balance Financing Receivable, Allowance for Credit Losses Allowance for loan losses, charge-offs Financing Receivable, Allowance for Credit Losses, Write-downs Allowance for loan losses, recoveries Financing Receivable, Allowance for Credit Losses, Recovery Allowance for loan losses, ending balance Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block] Derivative Instruments, Gain (Loss) [Table Text Block] Fair value, measurements, nonrecurring [Member] Fair Value, Measurements, Nonrecurring [Member] Collateral dependent impaired loans Collateral Dependent Impaired Loans Collateral Dependent Impaired Loans Other Commitments [Table] Other Commitments [Table] Other Commitments [Axis] Other Commitments [Axis] Other Commitments [Domain] Other Commitments [Domain] Other Commitments [Domain] Commitments to Invest in Affordable Housing Projects [Member] Commitments to Invest in Affordable Housing Projects [Member] Other Commitments [Line Items] Other Commitments [Line Items] Commitments to invest in qualified affordable housing projects Other Commitment Present value of credit enhancement fees Present value of credit enhancement fees The liability represented by the present value of the credit enhancement fees less any expected losses in the mortgages delivered under the Mortgage Partnership Finance program with the FHLB of Des Moines. FHLB MPF program - remaining outstanding balance of loans sold FHLB MPF Program Remaining Outstanding Balance of Loans Sold FHLB MPF Program Remaining Outstanding Balance of Loans Sold Contractual obligation Contractual Obligation Payments for construction in process Payments for Construction in Process Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying value [Member] Reported Value Measurement [Member] Approximate fair value [Member] Estimate of Fair Value Measurement [Member] Commitments to extend credit Standby letters of credit Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Cash and due from banks Cash and Due from Banks Federal funds sold Federal Funds Sold Investment securities available for sale Federal Home Loan Bank stock Federal Home Loan Bank Stock Loans, net Loans and Leases Receivable, Net Amount Accrued interest receivable Interest Receivable Deposits Deposits Federal funds purchased Federal Funds Purchased Short-term borrowings Other Short-term Borrowings Subordinated notes, net Subordinated Debt Federal Home Loan Bank advances, net of discount Federal Home Loan Bank advances, net of discount Carrying amount of Federal Home Loan Bank advances, net of unamortized discount, including current and noncurrent amounts. Long-term debt, net Long-term Debt Accrued interest payable Interest Payable Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability Loans pledged as collateral Loans Pledged as Collateral Impaired loans, with no related allowance, average recorded investment Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Impaired loans, with no related allowance, interest income, accrual method Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method Impaired loans, with related allowance, average recorded investment Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Impaired loans, with related allowance, interest income, accrual method Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method Impaired loans, average recorded investment Impaired Financing Receivable, Average Recorded Investment Impaired loans, interest income, accrual method Impaired Financing Receivable, Interest Income, Accrual Method Available-for-sale securities, gross unrealized gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Available-for-sale securities, gross unrealized losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Cash and cash equivalents Investment securities held to maturity, at amortized cost (fair value of $51,455 and $51,918 at March 31, 2016 and December 31, 2015, respectively) Federal Home Loan Bank stock, at cost Loans Allowance for loan losses Loans, net Premises and equipment, net Property, Plant and Equipment, Net Bank-owned life insurance Bank Owned Life Insurance Deferred tax assets, net Other assets Other Assets Total assets Assets LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] LIABILITIES Liabilities [Abstract] Deposits: Deposits [Abstract] Noninterest-bearing demand Noninterest-bearing Deposit Liabilities Interest-bearing demand Interest-bearing Domestic Deposit, Demand Savings Deposits, Savings Deposits Time of $250,000 or more Time deposits, $250,000 or more The aggregate amount of domestic and foreign time deposit liabilities in denominations of $250,000 or more Other time Time deposits, less than $250,000 The aggregate amount of domestic and foreign time deposit liabilities in denominations of less than $250,000. Total deposits Short-term borrowings Short-term Debt Subordinated notes, net of discount Long-term debt, net of discount Accrued expenses and other liabilities Accounts Payable and Accrued Liabilities Total liabilities Liabilities STOCKHOLDERS' EQUITY Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $0.01 par value; authorized 50,000,000 shares; no shares issued and outstanding at March 31, 2016 and December 31, 2015 Preferred Stock, Value, Issued Common stock, no par value; authorized 50,000,000 shares; 16,106,540 and 16,064,435 shares issued and outstanding at March 31, 2016 and December 31, 2015, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income (loss) Total stockholders' equity Total liabilities and stockholders' equity Liabilities and Equity Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Statement [Table]