Entity Central Index Key Available for sale debt securities amortized cost basis excluding mortgage backed securities. Mortgage backed securities available for sale amortized cost. Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Statement Of Financial Position [Abstract] Assets Assets [Abstract] Cash and due from banks Cash And Due From Banks Federal funds sold Federal Funds Sold Total cash and cash equivalents Cash Cash Equivalents And Federal Funds Sold Interest-bearing time deposits Interest Bearing Deposits In Banks Securities - available-for-sale Available For Sale Securities Debt Securities Other securities, at cost Other Investments And Securities At Cost Loans held for sale Loans Receivable Held For Sale Net Not Part Of Disposal Group Loans, net Loans And Leases Receivable Net Reported Amount Premises and equipment Property Plant And Equipment Net Goodwill Goodwill Mortgage servicing rights Servicing Asset At Amortized Value Other real estate owned Real Estate Acquired Through Foreclosure Bank owned life insurance Bank Owned Life Insurance Other assets Other Assets Total Assets Assets Liabilities and Stockholders' Equity Liabilities And Stockholders Equity [Abstract] Liabilities Liabilities [Abstract] Deposits Deposits [Abstract] Noninterest-bearing Noninterest Bearing Deposit Liabilities Interest-bearing Interest Bearing Deposit Liabilities [Abstract] NOW accounts Deposits Negotiable Order Of Withdrawal N O W Savings Deposits Savings Deposits Time Time Deposits Total deposits Deposits Federal funds purchased and securities sold under agreements to repurchase Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Federal Home Loan Bank (FHLB) advances Advances From Federal Home Loan Banks Dividend payable Dividends Payable Current And Noncurrent Accrued expenses and other liabilities Accrued Liabilities And Other Liabilities Total liabilities Liabilities Commitments and Contingencies Commitments And Contingencies Stockholders' Equity Stockholders Equity [Abstract] Common stock - No par value 20,000,000 shares authorized; issued and outstanding 10,400,000 shares 9/30/18 and 12/31/17 Common Stock Value Treasury stock - 1,114,739 shares 9/30/18, 1,134,120 shares 12/31/17 Treasury Stock Value Retained earnings Retained Earnings Accumulated Deficit Accumulated other comprehensive loss Accumulated Other Comprehensive Income Loss Net Of Tax Total stockholders' equity Stockholders Equity Total Liabilities and Stockholders' Equity Liabilities And Stockholders Equity 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 Treasury Stock, shares Treasury Stock Shares Interest income on federal funds sold and other. Amount of expenses incurred for ATM expenses during the reporting period. Income Statement [Abstract] Statement [Table] Statement [Table] Product and Service Product Or Service [Axis] Product and Service Products And Services [Domain] Customer Service Fees [Member] Bank Servicing [Member] Other Service Charges and Fees [Member] Financial Service Other [Member] Statement [Line Items] Statement [Line Items] Interest Income Interest And Dividend Income Operating [Abstract] Loans, including fees Interest And Fee Income Loans And Leases Debt securities: Interest Income Securities By Security Type [Abstract] U.S. Treasury and government agencies Interest Income Securities U S Treasury And Other U S Government Municipalities Interest Income Securities State And Municipal Dividends Dividend Income Operating Federal funds sold and other Interest Income Federal Funds Sold And Other Total interest income Interest And Dividend Income Operating Interest Expense Interest Expense [Abstract] Deposits Interest Expense Deposits Federal funds purchased and securities sold under agreements to repurchase Interest Expense Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Borrowed funds Interest Expense Borrowings Total interest expense Interest Expense Net Interest Income - Before Provision for Loan Losses 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] Noninterest income Revenue From Contract With Customer Excluding Assessed Tax Net gain on sale of loans Gain Loss On Sales Of Loans Net Net gain on sale of available-for-sale securities Debt Securities Available For Sale Realized Gain Loss Total noninterest income Noninterest Income Noninterest Expense Noninterest Expense [Abstract] Salaries and wages Salaries And Wages Employee benefits Employee Benefits And Share Based Compensation Net occupancy expense Occupancy Net Furniture and equipment Equipment Expense Data processing Information Technology And Data Processing Franchise taxes Taxes Excluding Income And Excise Taxes ATM expense Atm Expense Advertising Advertising Expense Net loss on sale of other assets owned Gain Loss On Sale Of Other Assets FDIC assessment Federal Deposit Insurance Corporation Premium Expense Mortgage servicing rights amortization Amortization Of Mortgage Servicing Rights M S Rs Other general and administrative Selling General And Administrative 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 Net Income Loss Basic and Diluted Earnings Per Share Earnings Per Share Basic And Diluted Dividends Declared Common Stock Dividends Per Share Declared Statement Of Income And Comprehensive Income [Abstract] Net Income Other Comprehensive Income (Loss) (Net of Tax): Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent [Abstract] Net unrealized gain (loss) on available-for-sale securities Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax Reclassification adjustment for gain on sale of available-for-sale securities Other Comprehensive Income Loss Reclassification Adjustment From A O C I For Sale Of Securities Before Tax Net unrealized gain (loss) on available-for-sale securities Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent Tax expense (benefit) Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent Other comprehensive income (loss) Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Comprehensive Income Comprehensive Income Net Of Tax Cash Paid During Period [Abstract] Statement Of Cash Flows [Abstract] Cash Flows from Operating Activities Net Cash Provided By Used In Operating Activities [Abstract] Net income Profit Loss 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] Depreciation Depreciation Nonproduction Amortization on available-for-sale securities, net Accretion Amortization Of Discounts And Premiums Investments Amortization of servicing rights Amortization of core deposit intangible Amortization Of Intangible Assets Compensation expense related to stock awards Share Based Compensation Deferred income taxes Deferred Income Tax Expense Benefit Provision for loan loss Gain on sale of loans held for sale Originations of loans held for sale Payments For Origination And Purchases Of Loans Held For Sale Proceeds from sale of loans held for sale Proceeds From Sale Of Loans Held For Sale Loss on sale of other assets owned Gain on sales of securities available-for-sale Available For Sale Securities Gross Realized Gain Loss Net Change in other assets and other liabilities, net Increase Decrease In Other Operating Capital Net Net cash provided by operating activities Net Cash Provided By Used In Operating Activities Cash Flows from Investing Activities Net Cash Provided By Used In Investing Activities Continuing Operations [Abstract] Activity in available-for-sale securities: Additional Cash Flow Elements Investing Activities [Abstract] Maturities, prepayments and calls Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities Sales Proceeds From Sale Of Available For Sale Securities Purchases Payments To Acquire Available For Sale Securities Debt Change in interest-bearing time deposits Proceeds From Payments For In Interest Bearing Deposits In Banks Proceeds from sale of other assets owned Proceeds From Sale Of Productive Assets Additions to premises and equipment Payments To Acquire Property Plant And Equipment Loan originations and principal collections, net Payments For Proceeds From Loans And Leases Net cash used in investing activities Net Cash Provided By Used In Investing Activities Cash Flows from Financing Activities Net Cash Provided By Used In Financing Activities [Abstract] Net change in deposits Increase Decrease In Deposits Net change in federal funds purchased and securities sold under agreements to repurchase Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net Purchase of treasury stock Payments For Repurchase Of Common Stock Cash dividends paid on common stock Payments Of Dividends Common Stock Net cash provided by (used in) financing activities Net Cash Provided By Used In Financing Activities Net Increase (Decrease) in Cash and Cash Equivalents Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Cash and cash equivalents - Beginning of year Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Cash and cash equivalents - End of period Supplemental Information Supplemental Cash Flow Information [Abstract] Cash paid during the year for: Cash Paid During Period [Abstract] Interest Interest Paid Net Income taxes Income Taxes Paid Noncash investing activities: Other Noncash Investing And Financing Items [Abstract] Transfer of loans to other real estate owned Transfer Of Other Real Estate Organization Consolidation And Presentation Of Financial Statements [Abstract] Basis of Presentation and Other Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Business Combinations [Abstract] Asset Purchases Business Combination Disclosure [Text Block] Investments Debt And Equity Securities [Abstract] Securities Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosure [Text Block] Receivables [Abstract] Loans Loans Notes Trade And Other Receivables Disclosure [Text Block] Earnings Per Share [Abstract] Earnings Per Share Earnings Per Share [Text Block] Fair Value Disclosures [Abstract] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Brokers And Dealers [Abstract] Federal Funds Purchased and Securities Sold Under Agreements to Repurchase Repurchase Agreements Resale Agreements Securities Borrowed And Securities Loaned Disclosure [Text Block] The entire disclosure pertaining to proposed business combination. Proposed business combination. Proposed Business Combination [Abstract] Proposed Business Combination Proposed Business Combination [Text Block] Accounting Changes And Error Corrections [Abstract] Recent Accounting Pronouncements New Accounting Pronouncements And Changes In Accounting Principles [Text Block] Recent Accounting Pronouncements New Accounting Pronouncements Policy Policy [Text Block] Amortization Expense of Core Deposit Intangible Assets Scheduleof Finite Lived Intangible Assets Future Amortization Expense Table [Text Block] Amortized Cost and Fair Value of Securities with Gross Unrealized Gains and Losses Schedule Of Available For Sale Securities Reconciliation Table [Text Block] Gross Unrealized Losses, Aggregated by Investment Category and Length of Time Available For Sale Securities Continuous Unrealized Loss Position Fair Value Table [Text Block] Gross Realized Gains and Losses Realized Gain Loss On Investments Table [Text Block] Amortized Cost and Fair Value of Debt Securities, by Contractual Maturity Investments Classified By Contractual Maturity Date Table [Text Block] Loans Schedule Of Accounts Notes Loans And Financing Receivable [Text Block] Tabular disclosure of maturity schedule by major category of loans. Contractual Maturity Schedule by Major Category of Loans Maturity Schedule By Major Category Of Loans Table [Text Block] 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 Distribution Of Fixed Rate Loans And Variable Rate Loans By Major Loan Category Table [Text Block] Tabular disclosure of contractual aging of the recorded investment in past due loans by class or loans. Contractual Aging of the Recorded Investment in Past Due Loans by Portfolio Classification of Loans Contractual Aging Of Recorded Investment In Past Due Loans By Class Or Loans Table [Text Block] Recorded Investment in Nonaccrual Loans by Portfolio Class of Loans Schedule Of Financing Receivables Non Accrual Status Table [Text Block] Tabular disclosure of risk category of loans. Risk Category of Loans by Portfolio Class Risk Category Of Loans Table [Text Block] Tabular disclosure of impaired loans classified as troubled debt restructure. Recorded Investment for Consumer Loans, Credit Quality based on Status of Loan and Payment Activity Recorded Investment In Those Classes Based On Payment Activity And Assigned Grading Table [Text Block] Schedule of Impaired Loans Impaired Financing Receivables Table [Text Block] Schedule of loans individually evaluated for impairment by portfolio segment. Loans Individually Evaluated for Impairment by Portfolio Class of Loans Schedule Of Loans Individually Evaluated For Impairment By Portfolio Segment Table [Text Block] Tabular disclosure of contribution provided by both the recoveries and the provision along with the reduction of the allowance caused by charge-off. Summary of Activities in Allowance for Credit Losses Contribution Provided By Both Recoveries And Provision Along With Reduction Of Allowance Caused By Charge Offs Table [Text Block] Tabular disclosure of activities disclosure in allowance for credit losses. Analysis of Allowance for Credit Losses Activities In Allowance For Credit Losses Table [Text Block] Calculation of Basic Earnings Per Share Schedule Of Earnings Per Share Basic By Common Class [Text Block] Estimated Fair Values and Related Carrying or Notional Amounts Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Table [Text Block] Financial Assets Measured at Fair Value on Recurring Basis Fair Value Assets Measured On Recurring Basis [Text Block] Changes in the Level 3 Fair-Value Category of Which Unobservable Inputs Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Text Block] Quantitative Information about Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques Table [Text Block] Impaired Loans and Other Real Estate Fair Value Assets Measured On Nonrecurring Basis [Text Block] Schedule of Remaining Contractual Maturity in Repurchase Agreements Schedule Of Securities Financing Transactions [Text Block] Share stock split ratio Stockholders Equity Note Stock Split Conversion Ratio1 Schedule Of Business Acquisitions By Acquisition [Table] Schedule Of Business Acquisitions By Acquisition [Table] Geographical Statement Geographical [Axis] Geographical Segment Geographical [Domain] Hicksville [Member] Hicksville [Member] Hicksville [Member] Custar [Member] Custar [Member] Custar [Member] Finite-Lived Intangible Assets by Major Class Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name Finite Lived Intangible Assets Major Class Name [Domain] Core Deposits [Member] Core Deposits [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Number of years amortized over an estimated remaining economic useful life of deposits Finite Lived Intangible Assets Remaining Amortization Period1 Amortization expense Amortization expense Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year Recognition of core deposit intangible asset with acquired purchase Finitelived Intangible Assets Acquired1 2018 2019 Finite Lived Intangible Assets Amortization Expense Year Two 2020 Finite Lived Intangible Assets Amortization Expense Year Three Total Finite Lived Intangible Assets Net Schedule Of Available For Sale Securities [Table] Schedule Of Available For Sale Securities [Table] Financial Instrument Financial Instrument [Axis] Financial Instruments Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain] U.S. Treasury [Member] U S Treasury Securities [Member] U.S. Government Agencies [Member] U S Government Agencies Debt Securities [Member] Mortgage-backed Securities [Member] Mortgage Backed Securities Issued By U S Government Sponsored Enterprises [Member] State and Local Governments [Member] U S States And Political Subdivisions [Member] Schedule of Available-for-sale Securities [Line Items] Schedule Of Available For Sale Securities [Line Items] Amortized Cost Available For Sale Debt Securities Amortized Cost Basis Gross Unrealized Gains Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax Gross Unrealized Losses Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax Fair Value Maturity period for under water securities. For under water securities loss position expiration period. Range Range [Axis] Range Range [Member] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Underwater security Maturity Period For Under Water Securities Loss position existed For Under Water Securities Loss Position Expiration Period Gross Unrealized Losses, Less Than Twelve Months Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss Fair Value, Less Than Twelve Months Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Gross Unrealized Losses, Twelve Months and Over Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss Fair Value, Twelve Months and Over Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Available for sale securities gross realized gain loss tax expenses. Available For Sale Securities Gross Realized Gain Loss [Abstract] Gross realized gains Debt Securities Available For Sale Realized Gain Gross realized losses Debt Securities Available For Sale Realized Loss Net realized gains Tax expense related to net realized gains Available For Sale Securities Gross Realized Gain Loss Tax Expenses Available for sale securities debt maturities fair value excluding mortgage backed securities. Available For Sale Securities Debt Maturities [Abstract] Amortized Cost, One year or less Available For Sale Securities Debt Maturities Within One Year Amortized Cost Amortized Cost, After one year through five years Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost Amortized Cost, After five years through ten years Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost Amortized Cost, After ten years Available For Sale Securities Debt Maturities After Ten Years Amortized Cost Amortized Cost, Total Available For Sale Debt Securities Amortized Cost Basis Excluding Mortgage Backed Securities Amortized Cost, Mortgage-backed securities Mortgage Backed Securities Available For Sale Amortized Cost Fair Value, One year or less Available For Sale Securities Debt Maturities Within One Year Fair Value Fair Value, After one year through five years Available For Sale Securities Debt Maturities After One Through Five Years Fair Value Fair Value, After five years through ten years Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value Fair Value, After ten years Available For Sale Securities Debt Maturities After Ten Years Fair Value Fair Value, Total Available For Sale Securities Debt Maturities Fair Value Excluding Mortgage Backed Securities Fair Value, Mortgage-backed securities Mortgage Backed Securities Available For Sale Fair Value Disclosure Total, Fair Value Investments pledged, carrying value Pledged Financial Instruments Not Separately Reported Securities Pledged Schedule Of Accounts Notes Loans And Financing Receivable [Table] Schedule Of Accounts Notes Loans And Financing Receivable [Table] Class of Financing Receivable, Type Financing Receivable Recorded Investment By Class Of Financing Receivable [Axis] Class of Financing Receivable, Type Financing Receivable Recorded Investment Class Of Financing Receivable [Domain] Industrial Development Bonds [Member] Industrial Development Bonds [Member] Industrial Development Bonds [Member] Financing Receivable Portfolio Segment Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment Financing Receivable Portfolio Segment [Domain] Consumer Real Estate [Member] Residential Portfolio Segment [Member] Agriculture Real Estate [Member] Agricultural Real Estate [Member] Agriculture Real Estate [Member] Agricultural Loan [Member] Agricultural [Member] Agricultural Loan [Member] Commercial Real Estate [Member] Commercial Real Estate Portfolio Segment [Member] Commercial and Industrial [Member] Commercial Portfolio Segment [Member] Consumer [Member] Consumer Portfolio Segment [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts Notes And Loans Receivable [Line Items] Loans: Accounts Notes Loans And Financing Receivable Gross Allowance And Net [Abstract] Loans - Gross Loans And Leases Receivable Gross Carrying Amount Less: Net deferred loan fees and costs Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums Loans after net deferred loan fees and costs Loans And Leases Receivable Net Of Deferred Income Less: Allowance for loan losses Loans And Leases Receivable Allowance Loans - Net Financing Receivables, Period Past Due Financing Receivables Period Past Due [Axis] Financing Receivables, Period Past Due Financing Receivables Period Past Due [Domain] 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] Distribution of fixed rate loans by major loan category, Fixed Rate Loans Receivable With Fixed Rates Of Interest1 Distribution of variable rate loans by major loan category, Variable Rate Loans Receivable With Variable Rates Of Interest1 Residential mortgage loan Loans Pledged As Collateral Commercial And Industrial And Industrial Development Bonds [Member] Commercial and Industrial [Member] Commercial And Industrial And Industrial Development Bonds [Member] 30 to 59 Days Past Due [Member] Financing Receivables30 To59 Days Past Due [Member] 60 to 89 Days Past Due [Member] Financing Receivables60 To89 Days Past Due [Member] Greater Than 90 Days [Member] Financing Receivables Equal To Greater Than90 Days Past Due [Member] Total Past Due Financing Receivable Recorded Investment Past Due Current Financing Receivable Recorded Investment Current Recorded Investment > 90 Days and Accruing Financing Receivable Recorded Investment90 Days Past Due And Still Accruing Investment in nonaccrual loans Financing Receivable Recorded Investment Nonaccrual Status Leverage ratio. Internal Credit Assessment Internal Credit Assessment [Axis] Internal Credit Assessment Internal Credit Assessment [Domain] Good [Member] Good [Member] Good [Member] Satisfactory [Member] 3 [Member] Satisfactory [Member] Leverage position Leverage Ratio Two Repayment period of loan with reasonable reduction of principal balance. Repayment period of loan with a reasonable reduction of principal balance Repayment Period Of Loan With Reasonable Reduction Of Principal Balance Excellent And Good [Member] 1-2 [Member] Excellent And Good [Member] Satisfactory Monitored [Member] 4 [Member] Satisfactory Monitored [Member] 5 [Member] Special Mention [Member] 6 [Member] Substandard [Member] 7 [Member] Doubtful [Member] Loss. 8 [Member] Loss [Member] Loans after net deferred loan fees and costs Pass [Member] Pass [Member] Consumer - Credit [Member] Credit Card Receivables [Member] Consumer Other Financing Receivables [Member] Consumer - Other [Member] Consumer Other Financing Receivables [Member] Financial Instrument Performance Status Financial Instrument Performance Status [Axis] Financial Instrument Performance Status Financial Instrument Performance Status [Domain] Performing [Member] Performing Financing Receivable [Member] Nonperforming [Member] Nonperforming Financing Receivable [Member] Performing Notes Receivable Net Impaired loans without a valuation allowance Impaired Financing Receivable With No Related Allowance Recorded Investment Impaired loans with a valuation allowance Impaired Financing Receivable With Related Allowance Recorded Investment Total impaired loans Impaired Financing Receivable Recorded Investment Valuation allowance related to impaired loans Impaired Financing Receivable Related Allowance Total non-accrual loans Total loans past-due ninety days or more and still accruing Average investment in impaired loans Impaired Financing Receivable Average Recorded Investment Additional funds available to be advanced in connection with impaired loans. Additional funds available to be advanced in connection with impaired loans Additional Funds Available To Be Advanced In Connection With Impaired Loans Impaired loans classified as troubled debt restructured Financing Receivable Modifications Recorded Investment TDR loans, subsequently defaulted during the period Financing Receivable Modifications Subsequent Default Number Of Contracts1 TDR impaired loans paid off Financing Receivables Impaired Troubled Debt Restructuring Write Down Maximum time for reevaluation. Re evaluation period for real estate. Maximum time for re-evaluation (in months) Maximum Time For Reevaluation Re-evaluation period for real estate Re Evaluation Period For Real Estate Unsecured consumer loans credit card credits and overdraft. Delinquent period for charging down consumer loans Delinquent period for charging down commercial and agricultural credits. Unsecured consumer loans, credit card credits and overdraft lines of credit reach Unsecured Consumer Loans Credit Card Credits And Overdraft Delinquent period for charging down consumer loans Delinquent Period For Charging Down Consumer Loans Delinquent period for charging down commercial and agricultural credits Delinquent Period For Charging Down Commercial And Agricultural Credits Schedule Of Impaired Financing Receivable [Table] Schedule Of Impaired Financing Receivable [Table] Financing Receivable, Impaired [Line Items] Financing Receivable Impaired [Line Items] With no related allowance recorded, Recorded Investment With no related allowance recorded, Unpaid Principal Balance Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance With no related allowance recorded, Average Recorded Investment Impaired Financing Receivable With No Related Allowance Average Recorded Investment With no related allowance recorded, Interest Income Recognized Impaired Financing Receivable With No Related Allowance Interest Income Accrual Method With no related allowance recorded, Interest Income Recognized Cash Basis Impaired Financing Receivable With No Related Allowance Interest Income Cash Basis Method With a specific allowance recorded, Recorded Investment With a specific allowance recorded, Unpaid Principal Balance Impaired Financing Receivable With Related Allowance Unpaid Principal Balance Related Allowance With a specific allowance recorded, Average Recorded Investment Impaired Financing Receivable With Related Allowance Average Recorded Investment With a specific allowance recorded, Interest Income Recognized Impaired Financing Receivable With Related Allowance Interest Income Accrual Method With a specific allowance recorded, Interest Income Recognized Cash Basis Impaired Financing Receivable With Related Allowance Interest Income Cash Basis Method Recorded Investment Unpaid Principal Balance Impaired Financing Receivable Unpaid Principal Balance Average Recorded Investment Interest Income Recognized Impaired Financing Receivable Interest Income Accrual Method Interest Income Recognized Cash Basis Impaired Financing Receivable Interest Income Cash Basis Method Foreclosed residential real estate property Residential real estate properties foreclosure proceedings Mortgage Loans In Process Of Foreclosure Amount 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 Loan Losses Allowance For Loan And Lease Losses Roll Forward Balance at beginning of year Loans charged off Allowance For Loan And Lease Losses Write Offs Recoveries Allowance For Loan And Lease Loss Recovery Of Bad Debts Balance at ending of year Allowance for Unfunded Loan Commitments & Letters of Credit Allowance For Unfunded Loan Commitments And Letters Of Credit Total Allowance for Credit Losses Financing Receivable Allowance For Credit Losses Other non interest Income expense (recovery) related to unfunded. Allowance For Credit Losses [Abstract] Financing receivable allowance for credit losses acquired with deteriorated credit quality ending period. Financing Receivables [Abstract] Schedule Of Financing Receivable Allowance For Credit Losses [Table] Schedule Of Financing Receivable Allowance For Credit Losses [Table] Unfunded Loan Commitment And Letters Of Credit [Member] Unfunded Loan Commitment & Letters of Credit [Member] Unfunded Loan Commitment And Letters Of Credit [Member] Unallocated [Member] Unallocated Financing Receivables [Member] Credit Loss Status Credit Loss Status [Axis] Credit Loss Status Credit Loss Status [Domain] Receivables Acquired with Deteriorated Credit Quality [Member] Financial Asset Acquired With Credit Deterioration [Member] Financing Receivable Allowance For Credit Losses [Line Items] Financing Receivable Allowance For Credit Losses [Line Items] ALLOWANCE FOR CREDIT LOSSES: Allowance For Credit Losses [Abstract] Beginning balance Charge Offs Provision (Credit) Other Non-interest expense related to unfunded Other Non Interest Income Expense Recovery Related To Unfunded Ending Balance Ending balance: individually evaluated for impairment Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 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 Ending Period FINANCING RECEIVABLES: Financing Receivables [Abstract] Ending balance 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 Net income Less: distributed earnings allocated to participating securities Participating Securities Distributed And Undistributed Earnings Loss Basic Less: undistributed earnings allocated to participating securities Undistributed Earnings Loss Allocated To Participating Securities Basic Net earnings available to common shareholders Net Income Loss Available To Common Stockholders Basic Weighted average common shares outstanding including participating securities Weighted Average Number Of Shares Issued Basic Less: average unvested restricted shares Weighted Average Number Of Shares Restricted Stock Weighted average common shares outstanding Weighted Average Number Of Shares Outstanding Basic Basic earnings and diluted per share Maximum maturity period of carrying amount interest bearing deposits. Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Hierarchy and NAV Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy and NAV Fair Value Measurements Fair Value Hierarchy [Domain] Level 3 [Member] Fair Value Inputs Level3 [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] Interest-bearing deposits maturing date Maximum Maturity Period Of Carrying Amount Interest Bearing Deposits Cash cash equivalents and federal funds sold fair value disclosure. Interest bearing time deposits fair value disclosure. Interest receivable fair value disclosure. Interest payable fair value disclosure. Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table] Level 1 [Member] Fair Value Inputs Level1 [Member] Level 2 [Member] Fair Value Inputs Level2 [Member] Liability Class Fair Value By Liability Class [Axis] Fair Value by Liability Class Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation By Liability Class [Domain] Interest bearing deposits liability. Interest Bearing Deposits [Member] Interest Bearing Deposits Liability [Member] Non interest bearing deposits. Non Interest Bearing Deposits [Member] Non Interest Bearing Deposits [Member] Time deposits. Time Deposits [Member] Time Deposits [Member] Measurement Basis Fair Value By Measurement Basis [Axis] Fair Value Disclosure Item Amounts [Default] Portion At Fair Value Fair Value Disclosure [Member] Fair Value Measurement Fair Value Disclosure Item Amounts [Domain] Reported Value Measurement [Member] Carrying Reported Amount Fair Value Disclosure [Member] Fair Value [Member] Estimate Of Fair Value Fair Value Disclosure [Member] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] Financial Assets: Assets Fair Value Disclosure [Abstract] Cash and Cash Equivalents Cash Cash Equivalents And Federal Funds Sold Fair Value Disclosure Interest-bearing time deposits Interest Bearing Time Deposits Fair Value Disclosure Other Securities Securities Borrowed Fair Value Disclosure Loans held for sale Loans Held For Sale Fair Value Disclosure Loans, net Loans Receivable Fair Value Disclosure Interest receivable Interest Receivable Fair Value Disclosure Financial Liabilities: Liabilities Fair Value Disclosure [Abstract] Total Deposits Deposits Fair Value Disclosure Federal Funds Purchased and Securities Sold Under Agreement to Repurchase Federal Funds Purchased And Securities Loaned Or Sold Under Agreements To Repurchase Fair Value Disclosure Federal Home Loan Bank advances Federal Home Loan Bank Borrowings Fair Value Disclosure Interest payable Interest Payable Fair Value Disclosure Measurement Frequency Fair Value By Measurement Frequency [Axis] Fair Value, Measurement Frequency Fair Value Measurement Frequency [Domain] Fair Value on a Recurring Basis [Member] Fair Value Measurements Recurring [Member] Total Securities Available-for-Sale Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Table] Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Table] US states and political subdivisions tax-exempt debt securities. State and Local Governments Tax-Exempt [Member] U S States And Political Subdivisions Tax Exempt Debt Securities [Member] US states and political subdivisions taxable debt securities. State and Local Governments Taxable[Member] U S States And Political Subdivisions Taxable Debt Securities [Member] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] Beginning Balance Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value Change in Market Value Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 Payments & Maturities Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements Ending Balance Collateral dependent impaired loans categorized as Level 3 Specific allocation for collateral dependent impaired loans Weighted Average [Member] Weighted Average [Member] Other Real Estate Owned-Residential [Member] Other Real Estate Owned-Commercial [Member] Impaired Loans [Member] Collateral Dependent Impaired Loans [Member] Impaired Loans [Member] Fair Value Valuation Technique Debt Securities Available For Sale Valuation Technique Extensible List Unobservable Inputs Debt Securities Available For Sale Measurement Input Extensible List Discount rate Debt Securities Available For Sale Measurement Input Fair Value Servicing Asset Valuation Technique Servicing Asset Valuation Technique Extensible List Unobservable Inputs Servicing Asset Measurement Input Extensible List Discount rate Other Real Estate Owned Measurement Input Fair Value Other Real Estate Valuation Technique Other Real Estate Owned Valuation Technique Extensible List Unobservable Inputs Other Real Estate Owned Measurement Input Extensible List Fair Value on Nonrecurring Basis [Member] Fair Value Measurements Nonrecurring [Member] Assets measured at fair value on a nonrecurring basis, Total Assets measured at fair value on a nonrecurring basis, Total Fees And Commissions Income [Abstract] Fees And Commissions Income [Abstract] Federal funds purchased Federal Funds Purchased Securities sold under agreements to repurchase Securities Sold Under Agreements To Repurchase Schedule Of Assets Sold Under Agreements To Repurchase [Table] Schedule Of Assets Sold Under Agreements To Repurchase [Table] US Treasury & Agency Securities [Member] U S Treasury And Government [Member] Repurchase Agreements and Similar Transactions, Maturity Periods Assets Sold Under Agreements To Repurchase Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods Assets Sold Under Agreements To Repurchase Maturity Period [Domain] Overnight & Continuous [Member] Maturity Overnight [Member] Up to 30 Days [Member] Maturity Up To30 Days [Member] 30-90 Days [Member] Maturity30 To90 Days [Member] Greater Than 90 Days [Member] Maturity Over90 Days [Member] Assets Sold under Agreements to Repurchase [Line Items] Assets Sold Under Agreements To Repurchase [Line Items] Repurchase agreements, Remaining contractual maturity of the agreements Total Number of full service offices. Proposed business combination. Proposed business combination. Proposed Business Combination [Table] Proposed Business Combination [Table] Business Acquisition Business Acquisition [Axis] Business Acquisition, Acquiree Business Acquisition Acquiree [Domain] Limberlost Bancshares, Inc. Limberlost Bancshares, Inc. [Member] Limberlost Bancshares Inc [Member] Legal Entity Legal Entity [Axis] Entity Entity [Domain] Bank of Geneva. Bank of Geneva [Member] Bank Of Geneva [Member] Northeast Indiana [Member] INDIA Proposed Business Combination [Line Items] Proposed Business Combination [Line Items] Number of full-service offices Number Of Full Service Offices Assets Deposits Consolidated equity Cash consideration payable on acquisition, per share. Common stock issued in exchange of each outstanding share Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued Cash payment for exchange of each share Cash Consideration Payable On Acquisition Per Share Aggregate transaction value Business Combination Consideration Transferred1 Accounting Policies [Abstract] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Adjustments for New Accounting Pronouncements Adjustments For New Accounting Pronouncements [Axis] Type of Adoption Type Of Adoption [Member] Accounting Standards Update 2017-08 [Member] Accounting Standards Update201708 [Member] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Accelerated amortization expense adjustment Adjustment For Amortization Tax Cuts and Jobs Act of 2017, reclassification from AOCI to retained earnings. Corporate income tax rate Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate Reclassification of tax effects from AOCI due to adoption of new Tax Cuts and Job Acts Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings