Accounting Changes and Error Corrections [Abstract] Accounting Changes and Error Corrections [Abstract] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Receivable Type [Axis] Receivable Type [Axis] Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract] Loans: Accretion (Amortization) of Discounts and Premiums, Investments Accretion and amortization of available for sale securities, net Accrued interest payable. Accrued Interest Payable Interest payable Accrued Liabilities and Other Liabilities Accrued expenses and other liabilities Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Tabular disclosure of activities disclosure in allowance for credit losses. Activities In Allowance For Credit Losses [Table Text Block] Analysis of Allowance for Credit Losses Additional Cash Flow Elements, Investing Activities [Abstract] Activity in securities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Advances from Federal Home Loan Banks Federal Home Loan Bank (FHLB) advances Federal Home Loan Bank advances Agricultural Loan [Member] Agricultural Loan [Member] Agricultural [Member] Agriculture Real Estate [Member] Agriculture Real Estate [Member] Agricultural Real Estate [Member] Allowance For Credit Losses [Abstract] Allowance For Credit Losses [Abstract] ALLOWANCE FOR CREDIT LOSSES: Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan & Lease Losses Allowance for Loan and Lease Losses, Write-offs Charge Offs Loans charged off Allowance for Loan and Lease Loss, Recovery of Bad Debts Recoveries Allowance is intended to reflect the potential for losses that may not be funded but for which the bank has made a commitment to fund including letters of credit. Allowance For Unfunded Loan Commitments And Letters Of Credit Allowance for Unfunded Loan Commitments & Letters of Credit Amendment Flag Amendment Flag Tabular disclosure of information pertaining to the amortization expense of the core deposit intangible assets remaining. Amortization Expense Of Core Deposit Intangible Asset [Table Text Block] Amortization Expense of Core Deposit Intangible Assets Amortization of Intangible Assets Amortization expense Amortization of core deposit intangible Amortization of Mortgage Servicing Rights (MSRs) Amortization of servicing rights Mortgage servicing rights amortization Amortized over estimated remaining economic useful life of deposits term. Amortized Over Estimated Remaining Economic Useful Life Of Deposits Term Number of years amortized over an estimated remaining economic useful life of deposits Assets Total Assets Assets [Abstract] Assets Assets, Fair Value Disclosure Fair Value Assets, Fair Value Disclosure [Abstract] Financial Assets: Assets, Fair Value Disclosure, Nonrecurring Assets measured at fair value on a nonrecurring basis, Total Assets Sold under Agreements to Repurchase [Line Items] Assets Sold under Agreements to Repurchase [Line Items] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Gains Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax Gross Unrealized Losses Available-for-sale Debt Securities, Amortized Cost Basis Amortized Cost Available for sale debt securities amortized cost basis excluding mortgage backed securities. Available For Sale Debt Securities Amortized Cost Basis Excluding Mortgage Backed Securities Amortized Cost, Total Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Gross Unrealized Losses, Twelve Months and Over Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block] Gross Unrealized Losses, Aggregated by Investment Category and Length of Time Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Gross Unrealized Losses, Less Than Twelve Months Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Fair Value, Less Than Twelve Months Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Fair Value, Twelve Months and Over Available-for-sale Securities, Debt Maturities [Abstract] Available-for-sale Securities, Debt Maturities [Abstract] Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis Amortized Cost, After five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Fair Value, After five years through ten years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis Amortized Cost, After one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Fair Value, After one year through five years Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Amortized Cost, After ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Fair Value, After ten years Available for sale securities debt maturities fair value excluding mortgage backed securities. Available For Sale Securities Debt Maturities Fair Value Excluding Mortgage Backed Securities Fair Value, Total Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Amortized Cost, One year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Fair Value, One year or less Available-for-sale Securities, Debt Securities Ending Balance Beginning Balance Total Securities Available for Sale Fair Value Total, Fair Value Securities - available-for-sale Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Abstract] Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Abstract] Available-for-sale Securities, Gross Realized Gain (Loss) Net gain on sale of available for sale securities Net realized gains Gain on sales of securities available for sale Available for sale securities gross realized gain loss tax expenses. Available For Sale Securities Gross Realized Gain Loss Tax Expenses Tax expense related to net realized gains Available-for-sale Securities, Gross Realized Gains Gross realized gains Available-for-sale Securities, Gross Realized Losses Gross realized losses Available-for-sale Securities [Table Text Block] Amortized Cost and Fair Value of Securities with Gross Unrealized Gains and Losses Bank Owned Life Insurance Bank Owned Life Insurance Brokers and Dealers [Abstract] Brokers and Dealers [Abstract] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition [Line Items] Business Acquisition [Line Items] Business Combination Disclosure [Text Block] Asset Purchases Business Combinations [Abstract] Business Combinations [Abstract] Reported Value Measurement [Member] Reported Value Measurement [Member] Cash and Cash Equivalents, Period Increase (Decrease) Net Increase in Cash and Cash Equivalents Cash and Due from Banks Cash and due from banks Cash, Cash Equivalents, and Federal Funds Sold Cash and cash equivalents - End of period Cash and cash equivalents - Beginning of year Cash and Cash Equivalents Total cash and cash equivalents Cash Paid During Period [Abstract] Cash Paid During Period [Abstract] Cash paid during the year for: Commercial And Industrial And Industrial Development Bonds [Member] Commercial And Industrial And Industrial Development Bonds [Member] Commercial And Industrial and Industrial Development Bonds [Member] Commercial and Industrial Sector [Member] Commercial and Industrial [Member] Commercial Real Estate Portfolio Segment [Member] Commercial Real Estate [Member] Commitments and Contingencies Commitments and Contingencies Common Stock, Dividends, Per Share, Declared Dividends Declared Common Stock, No Par Value Common stock, no par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Common Stock, Value, Issued Common stock - No par value 10,000,000 shares authorized; issued and outstanding 5,200,000 shares 3/31/17 and 12/31/16 Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive Income Consumer Other Financing Receivables [Member] Consumer Other Financing Receivables [Member] Consumer - Other [Member] Consumer Portfolio Segment [Member] Consumer [Member] Tabular disclosure of contractual aging of the recorded investment in past due loans by class or loans. Contractual Aging Of Recorded Investment In Past Due Loans By Class Or Loans [Table Text Block] Contractual Aging of the Recorded Investment in Past Due Loans by Portfolio Classification of Loans Tabular disclosure of contribution provided by both the recoveries and the provision along with the reduction of the allowance caused by charge-off. Contribution Provided By Both Recoveries And Provision Along With Reduction Of Allowance Caused By Charge Offs [Table Text Block] Summary of Activities in Allowance for Credit Losses Credit Card Receivable [Member] Consumer - Credit [Member] Current Fiscal Year End Date Current Fiscal Year End Date Custar [Member] Custar [Member] Custar [Member] Delinquent period for charging down commercial and agricultural credits. Delinquent Period For Charging Down Commercial And Agricultural Credits Delinquent period for charging down commercial and agricultural credits Delinquent period for charging down consumer loans Delinquent Period For Charging Down Consumer Loans Delinquent period for charging down consumer loans Deposits Total deposits Deposits [Abstract] Deposits Deposits, Negotiable Order of Withdrawal (NOW) NOW accounts Deposits, Savings Deposits Savings Depreciation, Nonproduction Depreciation Tabular disclosure of fixed rate loans and variable rate loans by major loan category. Distribution Of Fixed Rate Loans And Variable Rate Loans By Major Loan Category [Table Text Block] Distribution of Fixed Rate Loans and Variable Rate Loans by Major Loan Category Dividends Payable Dividend payable Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Period End Date Document Period End Date Document Type Document Type Doubtful [Member] 7 [Member] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Earnings Per Share, Basic and Diluted Basic earnings and diluted per share Earnings Per Share - Basic and Diluted Earnings Per Share [Text Block] Earnings Per Share Employee Benefits and Share-based Compensation Employee benefits Entity Central Index Key Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Equipment Expense Furniture and equipment Industry Sector [Axis] Industry Sector [Axis] Industry Sector [Domain] Industry Sector [Domain] Estimate of Fair Value Measurement [Member] Fair Value [Member] Excellent And Good [Member] Excellent And Good [Member] 1-2 [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] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block] Quantitative Information about Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements Fair Value, Assets Measured on Recurring Basis [Table Text Block] Financial Assets Measured at Fair Value on Recurring Basis Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Measurement Basis [Axis] Measurement Basis [Axis] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] Fair Value of Instruments Fair Value Inputs, Assets, Quantitative Information [Line Items] Fair Value Inputs, Assets, Quantitative Information [Line Items] Fair Value Inputs, Assets, Quantitative Information [Table] Fair Value Inputs, Assets, Quantitative Information [Table] Fair Value Inputs, Discount Rate Discount rate Fair Value, Inputs, Level 1 [Member] Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Level 3 [Member] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value, Measurements, Nonrecurring [Member] Fair Value on Nonrecurring Basis [Member] Fair Value, Measurements, Recurring [Member] Fair Value on a Recurring Basis [Member] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Changes in the Level 3 Fair-Value Category of Which Unobservable Inputs Federal Deposit Insurance Corporation Premium Expense FDIC Assessment Federal Funds Purchased Federal funds purchased Federal Funds Purchased and Securities Sold under Agreements to Repurchase Federal Funds Purchased and Securities Sold Under Agreement to Repurchase Total Federal Funds purchased and securities sold under agreements to repurchase Federal Funds Sold Federal funds sold Fees and Commissions Other service charges and fees Fees And Commissions Income [Abstract] Fees And Commissions Income [Abstract] Fees And Commissions Income [Abstract] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Financing Receivable, Allowance for Credit Losses Ending Balance Beginning balance Total Allowance for Credit Losses Financing receivable allowance for credit losses acquired with deteriorated credit quality ending period. Financing Receivable Allowance For Credit Losses Acquired With Deteriorated Credit Quality Ending Period Ending balance: loans acquired with deteriorated credit quality Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Ending balance: collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Ending balance: individually evaluated for impairment Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Collectively Evaluated for Impairment Ending balance: collectively evaluated for impairment Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Financing Receivable, Individually Evaluated for Impairment Ending balance: individually evaluated for impairment Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications, Number of Contracts Number of Contracts Modified in the Last 3 Months Financing Receivable, Modifications, Post-Modification Recorded Investment Post-Modification Outstanding Recorded Investment Financing Receivable, Modifications, Pre-Modification Recorded Investment Pre-Modification Outstanding Recorded Investment Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Recorded Investment > 90 Days and Accruing Total loans past-due ninety days or more and still accruing Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Domain] Class of Financing Receivable, Type [Domain] Financing Receivable, Recorded Investment, Current Current Financing Receivable, Recorded Investment, Nonaccrual Status Investment in nonaccrual loans Total non-accrual loans Financing Receivable, Recorded Investment, Past Due Total Past Due Financing Receivables, 30 to 59 Days Past Due [Member] 30 to 59 Days Past Due [Member] Financing Receivables, 60 to 89 Days Past Due [Member] 60 to 89 Days Past Due [Member] Financing Receivables [Abstract] Financing Receivables [Abstract] FINANCING RECEIVABLES: Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Greater Than 90 Days [Member] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Domain] Financing Receivables, Period Past Due [Domain] Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2017 Amortization expense 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2018 Finite-Lived Intangible Assets, Net Total For under water securities loss position expiration period. For Under Water Securities Loss Position Expiration Period Loss position existed Gain (Loss) on Disposition of Other Assets Loss on sale of other assets owned Net loss on sale of other assets owned Gain (Loss) on Sales of Loans, Net Net gain on sale of loans Gain on sale of loans held for sale Good [Member] Good [Member] Good [Member] Goodwill Goodwill Hicksville [Member] Hicksville [Member] Hicksville [Member] Impaired Financing Receivable, Average Recorded Investment Average investment in impaired loans Average Recorded Investment Impaired Financing Receivable, Interest Income, Accrual Method Interest Income Recognized Impaired Financing Receivable, Interest Income, Cash Basis Method Interest Income Recognized Cash Basis Impaired Financing Receivable, Recorded Investment Collateral dependent impaired loans categorized as Level 3 Total impaired loans Recorded Investment Impaired Financing Receivable, Related Allowance Valuation allowance related to impaired loans With a specific allowance recorded, Related Allowance Related Allowance Specific allocation for impaired loans Impaired Financing Receivables [Table Text Block] Schedule of Impaired Loans Impaired Financing Receivable, Unpaid Principal Balance Unpaid Principal Balance Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment With no related allowance recorded, Average Recorded Investment With no related allowance recorded, Average Recorded Investment Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method With no related allowance recorded, Interest Income Recognized With no related allowance recorded, Interest Income Recognized Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method With no related allowance recorded, Interest Income Recognized Cash Basis With no related allowance recorded, Interest Income Recognized Cash Basis Impaired Financing Receivable, with No Related Allowance, Recorded Investment With no related allowance recorded, Recorded Investment Impaired loans without a valuation allowance With no related allowance recorded, Recorded Investment Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance With no related allowance recorded, Unpaid Principal Balance With no related allowance recorded, Unpaid Principal Balance Impaired Financing Receivable, with Related Allowance, Average Recorded Investment With a specific allowance recorded, Average Recorded Investment Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method With a specific allowance recorded, Interest Income Recognized Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method With a specific allowance recorded, Interest Income Recognized Cash Basis Impaired Financing Receivable, with Related Allowance, Recorded Investment Impaired loans with a valuation allowance With a specific allowance recorded, Recorded Investment Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance With a specific allowance recorded, Unpaid Principal Balance Tabular disclosure of information pertaining to carrying amount of estimated fair value on impaired loans and other real estate owned as recorded at fair value. Impaired Loans And Other Real Estate [Table Text Block] Impaired Loans and Other Real Estate Impaired loans classified as troubled debt restructured. Impaired Loans Classified As Troubled Debt Restructured Impaired loans classified as troubled debt restructured Impaired Loans [Member] Impaired Loans [Member] Collateral Dependent Impaired Loans [Member] Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income Before Income Taxes Income Statement [Abstract] Income Statement [Abstract] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Income Taxes Paid Income taxes Income Tax Expense (Benefit) Income Taxes Increase (Decrease) in Deposits Net change in deposits Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net Net change in federal funds purchased and securities sold under agreements to repurchase Increase (Decrease) in Other Operating Assets and Liabilities, Net Change in other assets and other liabilities, net Industrial Development Bonds [Member] Industrial Development Bonds [Member] Industrial Development Bonds [Member] Information Technology and Data Processing Data processing Interest and Dividend Income, Operating Total interest income Interest and Dividend Income, Operating [Abstract] Interest Income Interest and Dividend Income, Securities, Operating Dividends Interest and Fee Income, Loans and Leases Loans, including fees Interest-bearing Deposit Liabilities Interest bearing Deposits Interest-bearing Deposit Liabilities [Abstract] Interest-bearing Interest-bearing Deposits in Banks and Other Financial Institutions Interest-bearing time deposits Interest Expense Total interest expense Interest Expense [Abstract] Interest Expense Interest Expense, Borrowings Borrowed funds Interest Expense, Deposits Deposits Interest Expense, Federal Funds Purchased and Securities Sold under Agreements to Repurchase Federal funds purchased and securities sold under agreements to repurchase Interest Income (Expense), after Provision for Loan Loss Net Interest Income After Provision For Loan Losses Interest Income (Expense), Net Net Interest Income - Before Provision for Loan Losses Interest and Dividend Income, Securities, by Security Type [Abstract] Debt securities: Interest Income, Securities, State and Municipal Municipalities Interest Income, Securities, US Treasury and Other US Government U.S. Treasury and government agencies Interest Paid Interest Interest Receivable Interest receivable Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Securities Leverage ratio. Leverage Ratio Two Leverage position Liabilities Total liabilities Liabilities [Abstract] Liabilities Liabilities and Equity Total Liabilities and Stockholders' Equity Liabilities and Equity [Abstract] Liabilities and Stockholders' Equity Liabilities, Fair Value Disclosure [Abstract] Financial Liabilities: Loans and Leases Receivable, Allowance Allowance for Loan & Lease Losses Balance at beginning of year Less: Allowance for loan losses Loans and Leases Receivable, Gross Loans - Gross Loans and Leases Receivable, Net of Deferred Income Ending balance Loans after net deferred loan fees and costs Loans after net deferred loan fees and costs Loans and Leases Receivable, Net Amount Loans, net Loans - Net Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Loans Loans Receivable Held-for-sale, Net, Not Part of Disposal Group Loans held for sale Loans Receivable with Fixed Rates of Interest Distribution of fixed rate loans by major loan category, Fixed Rate Loans Receivable with Variable Rates of Interest Distribution of variable rate loans by major loan category, Variable Rate Major Category Of Receivables Due Within One Year [Member] Major Category Of Receivables Due Within One Year [Member] Major Category Of Receivables Due Within One Year [Member] Major Category Of Receivables Due Within One Year To Five Years[Member] Major Category Of Receivables Due Within One Year To Five Years[Member] Major Category Of Receivables Due Within One Year to Five Years [Member] Major Category Of Receivables Over Five Years [Member] Major Category Of Receivables Over Five Years [Member] Major Category Of Receivables Over Five Years [Member] 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] Maturity Greater than 90 Days [Member] Greater Than 90 Days [Member] Maturity Overnight [Member] Overnight & Continuous [Member] Maturity period for under water securities. Maturity Period For Under Water Securities Underwater security Tabular disclosure of maturity schedule by major category of loans. Maturity Schedule By Major Category Of Loans [Table Text Block] Maturity Schedule by Major Category of Loans Maximum maturity period of carrying amount interest bearing deposits. Maximum Maturity Period Of Carrying Amount Interest Bearing Deposits Interest-bearing deposits maturing date Maximum [Member] Maximum [Member] Maximum time for reevaluation. Maximum Time For Reevaluation Maximum time for re-evaluation (in months) Minimum [Member] Minimum [Member] Mortgage backed securities available for sale amortized cost. Mortgage Backed Securities Available For Sale Amortized Cost Amortized Cost, Mortgage-backed securities Mortgage-backed Securities Available-for-sale, Fair Value Disclosure Fair Value, Mortgage-backed securities Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Mortgage-backed Securities [Member] Mortgage Loans in Process of Foreclosure, Amount Residential real estate properties foreclosure proceedings Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash Flows from Financing Activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Cash Flows from Investing Activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Cash Flows from Operating Activities Net change in fair market value of available for sale securities. Net Change In Fair Market Value Of Available For Sale Securities Change in Market Value Net Income (Loss) Attributable to Parent Net income Net Income Net Income (Loss) Available to Common Stockholders, Basic Net earnings available to common shareholders New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements Noninterest-bearing Deposit Liabilities Non-interest bearing Deposits Noninterest-bearing Noninterest Expense Total other operating expenses Noninterest Expense [Abstract] Noninterest Expense Noninterest Income Total noninterest income Noninterest Income [Abstract] Noninterest Income Nonperforming Financial Instruments [Member] Nonperforming [Member] Financing Receivable, Net Ending balance: loans acquired with deteriorated credit quality Financing Receivable, Net Occupancy, Net Net occupancy expense Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Basis of Presentation Other Assets Other assets Other Comprehensive Income (Loss), Available-for-sale Securities, Tax, Portion Attributable to Parent Tax expense Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Net unrealized gain on available for sale securities Other Comprehensive Income (Loss), Net of Tax Other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other Comprehensive Income (Net of Tax): Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Reclassification adjustment for gain on sale of available for sale securities Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Net unrealized gain on available for sale securities Other Interest and Dividend Income Other Other Investments and Securities, at Cost Other securities, at cost Other Noncash Investing and Financing Items [Abstract] Noncash investing activities: Other non interest Income expense (recovery) related to unfunded. Other Non Interest Income Expense Recovery Related To Unfunded Other Non-interest expense related to unfunded Other Real Estate Commercial [Member] Other Real Estate Commercial [Member] Other Real Estate Owned - Commercial [Member] Other Real Estate Residential [Member] Other Real Estate Residential [Member] Other Real Estate Owned - Residential [Member] Other Securities consists of Federal Home Loan Bank of Cincinnati and Indianapolis stock and Farmer Mac stock. These stocks are carried at cost and are held to enable the Bank to conduct business with the entities. The Federal Home Loan Banks sell and purchase their stock at par; therefore cost approximates market value. The Federal Home Loan Bank of Cincinnati stock is held as collateral security for all indebtedness of the Bank to the Federal Home Loan Bank. Other Securities Other Securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Less: distributed earnings allocated to participating securities Pass [Member] Pass [Member] Payments and maturities of available for sale securities. Payments And Maturities Of Available For Sale Securities Payments & Maturities Payments for Origination and Purchases of Loans Held-for-sale Originations of loans held for sale Payments for (Proceeds from) Loans and Leases Loan originations and principal collections, net Payments for Repurchase of Common Stock Purchase of Treasury Stock Payments of Ordinary Dividends, Common Stock Cash dividends paid on common stock Payments to Acquire Available-for-sale Securities, Debt Purchases Payments to Acquire Property, Plant, and Equipment Additions to premises and equipment Performing Financial Instruments [Member] Performing [Member] Pledged Financial Instruments, Not Separately Reported, Securities Investments with a carrying value Portion at Fair Value Measurement [Member] Carrying Amount [Member] Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Maturities, prepayments and calls Proceeds from (Payments for) in Interest-bearing Deposits in Banks Change in interest-bearing time deposits Proceeds from Sale of Available-for-sale Securities Sales Proceeds from Sale of Loans Held-for-sale Proceeds from sale of loans held for sale Proceeds from Sale of Property, Plant, and Equipment Proceeds from sales of other assets owned Property, Plant and Equipment, Net Premises and equipment Provision for Loan and Lease Losses Provision for Loan Losses Provision (Credit) Provision for loan loss Range [Axis] Range [Axis] Range [Domain] Range [Domain] Real Estate Acquired Through Foreclosure Foreclosed residential real estate property Other real estate owned Realized Gain (Loss) on Investments [Table Text Block] Gross Realized Gains and Losses Receivables [Abstract] Receivables [Abstract] Receivables Acquired with Deteriorated Credit Quality [Axis] Receivables Acquired with Deteriorated Credit Quality [Axis] Receivables Acquired with Deteriorated Credit Quality [Domain] Receivables Acquired with Deteriorated Credit Quality [Domain] Receivables Acquired with Deteriorated Credit Quality [Member] Receivables Acquired with Deteriorated Credit Quality [Member] Receivable [Domain] Receivable [Domain] Recognition of core deposit intangible asset with acquired purchase. Recognition Of Core Deposit Intangible Asset With Acquired Purchase Recognition of core deposit intangible asset with acquired purchase Tabular disclosure of impaired loans classified as troubled debt restructure. Recorded Investment In Those Classes Based On Payment Activity And Assigned Grading [Table Text Block] Recorded Investment for Consumer Loans, Credit Quality based on Status of Loan and Payment Activity Re evaluation period for real estate. Re Evaluation Period For Real Estate Re-evaluation period for real estate Repayment period of loan with reasonable reduction of principal balance. Repayment Period Of Loan With Reasonable Reduction Of Principal Balance Repayment period of loan with a reasonable reduction of principal balance Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block] Federal Funds Purchased and Securities Sold Under Agreements to Repurchase Residential mortgage loan. Residential Mortgage Loan Residential mortgage loan Residential Portfolio Segment [Member] Consumer Real Estate [Member] Retained Earnings (Accumulated Deficit) Retained earnings Tabular disclosure of risk category of loans. Risk Category Of Loans [Table Text Block] Risk Category of Loans by Portfolio Class Compensation Salaries and Wages Satisfactory [Member] Satisfactory [Member] 3 [Member] Satisfactory Monitored [Member] Satisfactory Monitored [Member] 4 [Member] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Loans Schedule of Assets Sold under Agreements to Repurchase [Table] Schedule of Assets Sold under Agreements to Repurchase [Table] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Amortized Cost and Fair Value of Debt Securities, by Contractual Maturity Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Estimated Fair Values and Related Carrying or Notional Amounts Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table Text Block] Calculation of Basic Earnings Per Share Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Recorded Investment in Nonaccrual Loans by Portfolio Class of Loans Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Schedule of loans individually evaluated for impairment by portfolio segment. Schedule Of Loans Individually Evaluated For Impairment By Portfolio Segment [Table Text Block] Loans Individually Evaluated for Impairment by Portfolio Class of Loans Schedule of Repurchase Agreements [Table Text Block] Schedule of Remaining Contractual Maturity in Repurchase Agreements Securities Sold under Agreements to Repurchase Repurchase agreements, Remaining contractual maturity of the agreements Securities sold under agreements to repurchase Selling, General and Administrative Expense Other general and administrative Servicing Asset at Amortized Cost Mortgage servicing rights Bank Servicing Fees Customer service fees Share-based Compensation Compensation expense related to stock awards Special Mention [Member] 5 [Member] State and Local Jurisdiction [Member] State and Local Governments [Member] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Stockholders' Equity Attributable to Parent Total stockholders' equity Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity Substandard [Member] 6 [Member] Supplemental Cash Flow Information [Abstract] Supplemental Information Taxable [Member] Taxable [Member] Taxable [Member] Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Taxes, Miscellaneous Franchise taxes Tax Exempt [Member] Tax Exempt [Member] Tax - Exempt [Member] Time Deposits Time Time Deposits Trading Symbol Trading Symbol Real Estate Owned, Transfer from Real Estate Owned Transfer of loans to other real estate owned Financial Instruments [Domain] Financial Instruments [Domain] Treasury Stock, Shares Treasury Stock, shares Treasury Stock, Value Treasury Stock - 579,125 shares 3/31/17, 579,125 shares 12/31/16 Troubled Debt Restructurings on Financing Receivables [Table Text Block] Impaired Loans Classified as Troubled Debt Restructured Unallocated Financing Receivables [Member] Unallocated [Member] Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums Less: Net deferred loan fees and costs Undistributed Earnings (Loss) Allocated to Participating Securities, Basic Less: undistributed earnings allocated to participating securities Unfunded Loan Commitment And Letters Of Credit [Member] Unfunded Loan Commitment And Letters Of Credit [Member] Unfunded Loan Commitment & Letters of Credit [Member] Unsecured consumer loans credit card credits and overdraft. Unsecured Consumer Loans Credit Card Credits And Overdraft Unsecured consumer loans, credit card credits and overdraft lines of credit reach US States and Political Subdivisions Debt Securities [Member] U.S. Government Agencies [Member] US Treasury and Government [Member] US Treasury & Agency Securities [Member] US Treasury Securities [Member] U.S. Treasury [Member] Weighted Average [Member] Weighted Average [Member] Weighted Average Number of Shares Issued, Basic Weighted average common shares outstanding including participating securities Weighted Average Number of Shares Outstanding, Basic Weighted average common shares outstanding Weighted Average Number of Shares, Restricted Stock Less: average unvested restricted shares