Receivables [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Commercial Real Estate [Member] Commercial Real Estate Portfolio Segment [Member] Consumer Real Estate [Member] Residential Portfolio Segment [Member] Construction and Land Development [Member] Construction Portfolio Segment [Member] Construction Portfolio Segment [Member] Commercial and Industrial [Member] Commercial Portfolio Segment [Member] Consumer and Other [Member] Consumer Portfolio Segment [Member] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Performing [Member] Performing Financial Instruments [Member] Impaired Loans [Member] Nonperforming Financial Instruments [Member] Credit Loss Status [Axis] Credit Loss Status [Axis] Credit Loss Status [Domain] Credit Loss Status [Domain] All Other Loans [Member] Receivables Other than Receivables Acquired with Deteriorated Credit Quality [Member] Receivables Other than Receivables Acquired with Deteriorated Credit Quality [Member] Purchased Credit Impaired Loans [Member] Financial Asset Acquired with Credit Deterioration [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Allowance for loan losses Loans and Leases Receivable, Allowance Derivative Instruments and Hedging Activities Disclosure [Abstract] Schedule of Fair Value Hedge Relationships in Balance Sheet Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Fair Value Hedge Relationships on Income Statement Derivative Instruments, Gain (Loss) [Table Text Block] Schedule of Fair Value Hedges Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Investments, Debt and Equity Securities [Abstract] Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Cash and due from banks Cash and Due from Banks Interest-bearing deposits with banks Interest-bearing Deposits in Banks and Other Financial Institutions Federal funds sold Federal Funds Sold Total cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Securities available-for-sale, at fair value Debt Securities, Available-for-sale Other investments Investment Owned, Restricted, Cost Loans held for sale Loans Receivable Held-for-sale, Net, Not Part of Disposal Group Loans Loans and Leases Receivable, Net of Deferred Income Less: Allowance for loan losses Loans, net Loans and Leases Receivable, Net Amount Premises and equipment, net Property, Plant and Equipment, Net Other real estate owned Repossessed Assets Goodwill and core deposit intangible, net Other Intangible Assets, Net Bank owned life insurance Cash Surrender Value of Life Insurance Other assets Other Assets Total assets Assets LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities and Equity [Abstract] Deposits: Deposits [Abstract] Noninterest-bearing demand Noninterest-bearing Deposit Liabilities Interest-bearing demand Demand Deposit Accounts Money market and savings Deposits, Savings Deposits Time deposits Time Deposits Total deposits Deposits Securities sold under agreement to repurchase Federal Funds Purchased and Securities Sold under Agreements to Repurchase Federal Home Loan Bank advances and other borrowings Federal Home Loan Bank Advances and Other Borrowings The aggregate carrying amount of all Federal Home Loan Bank loans (advances) and also includes other borrowings. Subordinated debt Subordinated Debt Other liabilities Other Liabilities Total liabilities Liabilities Shareholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $1 par value; 2,000,000 shares authorized; No shares issued and outstanding Preferred Stock, Value, Issued Common stock, $1 par value; 40,000,000 shares authorized; 13,953,209 and 13,933,504 shares issued and outstanding, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders' equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders' equity Liabilities and Equity Leases [Abstract] Lease Costs Lease, Cost [Abstract] Operating lease costs Operating Lease, Cost Short-term lease costs Short-term Lease, Cost Variable lease costs Variable Lease, Cost Total Lease, Cost Cash paid for amounts included in the measurement of lease liabilities: Cash Flow, Operating Activities, Lessee [Abstract] Operating cash flows from operating leases Operating Lease, Payments Total loans Loans And Leases Receivable, Including Held-For Sale, Net Of Deferred Income Loans And Leases Receivable, Including Held-For Sale, Net Of Deferred Income Organization, Consolidation and Presentation of Financial Statements [Abstract] Nature of Business Nature Of Business Policy [Policy Text Block] Nature Of Business Policy [Policy Text Block] Basis of Presentation and Accounting Estimates Use of Estimates, Policy [Policy Text Block] Recently Issued and Adopted Accounting Pronouncements; Recently Issued Not Yet Effective Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Reclassifications Reclassification, Policy [Policy Text Block] Earnings Per Common Share Earnings Per Share, Policy [Policy Text Block] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] U.S. Government-sponsored enterprises (GSEs) [Member] US Government-sponsored Enterprises Debt Securities [Member] Municipal securities [Member] Municipal Securities [Member] Other debt securities [Member] Other Debt Obligations [Member] Mortgage-backed securities (GSEs) [Member] Residential Mortgage Backed Securities [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Available-for-sale, fair value, less than 12 months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months Available-for-sale, gross unrealized losses, less than 12 months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Available-for-sale, fair value, 12 months or greater Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Available-for-sale, gross unrealized losses, 12 months or greater Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Securities available for sale Debt Securities, Available-for-sale, Unrealized Loss Position Available-for-sale, gross unrealized losses, total Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Statement of Comprehensive Income [Abstract] Net income Net Income (Loss) Attributable to Parent Other comprehensive income, net of tax: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Unrealized holding gains (losses) and hedge effects on securities available-for-sale arising during the period Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Reclassification adjustment for (gains) losses realized Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Non PCI Loans [Member] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Impaired loans without a valuation allowance, Recorded Investment Impaired Financing Receivable, with No Related Allowance, Recorded Investment Impaired loans without a valuation allowance, Unpaid Principal Balance Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Impaired loans without a valuation allowance, Average Recorded Investment Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Impaired loans without a valuation allowance, Interest Income Recognized Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method Impaired loans with a valuation allowance, Recorded Investment Impaired Financing Receivable, with Related Allowance, Recorded Investment Impaired loans with a valuation allowance, Unpaid Principal Balance Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Impaired loans with a valuation allowance, Related Allowance Impaired Financing Receivable, Related Allowance Impaired loans with a valuation allowance, Average Recorded Investment Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Impaired loans with a valuation allowance, Interest Income Recognized Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method Total impaired loans, Recorded Investment Impaired Financing Receivable, Recorded Investment Total impaired loans, Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Total impaired loans, Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Total impaired loans, Interest Income Recognized Impaired Financing Receivable, Interest Income, Cash Basis Method Fair Value Disclosures [Abstract] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fair Value, Assets and Liabilities Measured on Non-Recurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Fair Value, by Balance Sheet Grouping Fair Value, by Balance Sheet Grouping [Table Text Block] Leases Lessee, Operating Leases [Text Block] Less: Allowance for loan losses Loans, net Loans And Leases Receivable, Including Held For Sale, Net Amount Loans And Leases Receivable, Including Held For Sale, Net Amount Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Loans and Allowance for Loan Losses Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Impaired and Performing Loans Receivable Schedule Of Impaired and Performing Loans Receivable [Table Text Block] Tabular disclosure of impaired and performing loans receivable during the reporting period. Schedule of Allowance for Loan Losses for Impaired and Performing Loans Receivable Schedule Of Allowance For Loan Losses For Impaired and Performing Loans Receivable [Table Text Block] Tabular disclosure of allowance for loan losses for impaired and performing loans receivable during the reporting period. Schedule of Financing Receivable Allowance for Credit Losses Schedule Of Financing Receivable Allowance For Credit Losses [Table Text Block] Schedule detailing information related to financing receivables and activity in the allowance for credit losses account by portfolio segment. Financing Receivable Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Past Due Financing Receivables Financing Receivable, Past Due [Table Text Block] Impaired Financing Receivables Impaired Financing Receivables [Table Text Block] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period, Carrying Amount of Loans Certain Loans Acquired In Transfer Not Accounted For As Debt Securities, Acquired During Period Carrying Amount Of Loans [Table Text Block] Tabular disclosure of certain loans acquired in transfer not accounted for as debt securities acquired during period carrying amount of loans. Schedule of Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule of Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement [Table Text Block] Tabular disclosure of certain loans acquired in transfer accounted for as debt securities accretable yield movement. Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest Rate Swap, Liability [Member] Interest Rate Swap, Liability [Member] Interest Rate Swap, Liability [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as Hedging Instrument [Member] Designated as Hedging Instrument [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Weighted average remaining maturity Derivative, Average Remaining Maturity Weighted Average Pay Rate Derivative, Average Variable Interest Rate Derivative liability, notional amount Derivative Liability, Notional Amount Hedged liability, fair value Hedged Liability, Fair Value Hedge Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Table] Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Table] Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Line Items] Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Line Items] Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Accretable yield, beginning of period Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Additions Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Additions Accretion income Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Accretion Reclassification Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications (to) from Nonaccretable Difference Other changes, net Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Period Increase (Decrease) Accretable yield, end of period Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Net income 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 and amortization Depreciation, Depletion and Amortization, Nonproduction Accretion of fair value purchase accounting adjustments, net Accretion Of Purchase Accounting Adjustments, Net Accretion Of Purchase Accounting Adjustments, Net Provision for loan losses Provision for Loan and Lease Losses Stock compensation expense Share-based Payment Arrangement, Noncash Expense (Gains) losses from redemption and sale on securities available-for-sale Debt Securities, Available-for-sale, Realized Gain (Loss) Deferred income tax expense Deferred Income Tax Expense (Benefit) Increase in cash surrender value of bank owned life insurance Bank Owned Life Insurance Income Loss on disposal of fixed assets Gain (Loss) on Disposition of Property Plant Equipment Net (gains) losses from sale of other real estate owned Gains (Losses) on Sales of Other Real Estate Net gains from sale of loans Gain (Loss) on Sale of Mortgage Loans Origination of loans held for sale Payments for Origination and Purchases of Loans Held-for-sale Proceeds from sales of loans held for sale Proceeds from Sale of Mortgage Loans Held-for-sale Net change in: Increase (Decrease) in Operating Capital [Abstract] Accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Accrued interest payable Increase (Decrease) in Interest Payable, Net Other assets Increase (Decrease) in Other Operating Assets Other liabilities Increase (Decrease) in Other Operating Liabilities 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] Proceeds from sales of securities available-for-sale Proceeds from Sale of Debt Securities, Available-for-sale Proceeds from maturities and calls of securities available-for-sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Proceeds from paydowns of securities available-for-sale Proceeds From Prepayment Of Debt Securities, Available-For-Sale Proceeds From Prepayment Of Debt Securities, Available-For-Sale Purchases of securities available-for-sale Payments to Acquire Debt Securities, Available-for-sale Purchases of other investments Payments to Acquire Restricted Investments Net cash and cash equivalents received in business combination Cash Acquired from Acquisition Net increase in loans Payments for (Proceeds from) Loans Receivable Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from sale of other real estate owned Proceeds from Sale of Foreclosed Assets 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, Continuing Operations [Abstract] Net increase in deposits Increase (Decrease) in Deposits Net decrease in securities sold under agreements to repurchase Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net Issuance of common stock Proceeds from Issuance of Common Stock Proceeds from Federal Home Loan Bank advances and other borrowings Proceeds from (Payments for) Other Financing Activities Repayment of Federal Home Loan Bank advances and other borrowings Net Payments On Federal Home Loan Bank Advances The net cash outflow associated with Federal Home Loan Bank Advances made during the period. Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities NET INCREASE 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 period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents CASH AND CASH EQUIVALENTS, end of period SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION Supplemental Cash Flow Information [Abstract] Cash paid during the period for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid during the period for income taxes Income Taxes Paid NONCASH INVESTING AND FINANCING ACTIVITIES Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Change in unrealized (gains) losses on securities available-for-sale Noncash Investing And Financing Activities Change In Unrealized Gains On Securities Available For Sale The change in unrealized holding gain (loss), net of tax, on available-for-sale securities included in a separate component of shareholders' equity noncash investing or financing activities. Acquisition of real estate through foreclosure SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Acquisition Through Foreclosure Financed sales of other real estate owned Financed Sales Of Foreclosed Assets Represents the amount of financed sales of foreclosed assets in non-cash investing and financing activities. Change in goodwill due to acquisition Goodwill, Acquired During Period Initial recognition of operating lease right-of-use assets Operating Lease, Right-Of-Use Assets, Initial Recognition Operating Lease, Right-Of-Use Assets, Initial Recognition Initial recognition of operating lease liabilities Operating Lease, Liability, Initial Recognition Operating Lease, Liability, Initial Recognition Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Axis] Financial Asset, Period Past Due [Domain] Financial Asset, Period Past Due [Domain] 30 to 60 Days Past Due and Accruing [Member] Financing Receivable, 30 to 60 Days Past Due [Member] Financing Receivable, 30 to 60 Days Past Due [Member] 61 to 89 Days Past Due and Accruing [Member] Financing Receivable, 61 to 89 Days Past Due [Member] Financing Receivable, 61 to 89 Days Past Due [Member] Past Due 90 Days or More and Accruing [Member] Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Recorded investment, past due Financing Receivable, Past Due Nonaccrual Financing Receivable, Nonaccrual Total Past Due and NonAccrual Financing Receivable, Recorded Investment, Past Due Including Nonaccrual Status Financing receivable recorded investment past due including non accrual status. Current Loans Financing Receivable, Not Past Due Summary of Lease Assets and Liabilities Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Summary of Lease Costs and Other Information Lease, Cost [Table Text Block] Summary of Future Minimum Payments Lessee, Operating Lease, Liability, Maturity [Table Text Block] Earnings Per Share [Abstract] Net income Net Income (Loss) Available to Common Stockholders, Basic Weighted average basic common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Effect of dilutive stock options (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Weighted average dilutive shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Basic earnings per common share (in dollars per share) Earnings Per Share, Basic Diluted earnings per common share (in dollars per share) Earnings Per Share, Diluted Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 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 Amount [Member] Reported Value Measurement [Member] Estimated Fair Value [Member] Estimate of Fair Value Measurement [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Assets: Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Other investments Investment Owned, at Cost Loans, net Loans Receivable, Fair Value Disclosure Liabilities: Liabilities [Abstract] Noninterest-bearing demand deposits Interest-bearing demand deposits Money market and savings deposits Savings Deposits and Money Market Accounts Fair Value Representing savings deposits and money market accounts fair value. Time deposits Securities sold under agreements to repurchase Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure Federal Home Loan Bank advances and other borrowings Federal Home Loan Bank Borrowings, Fair Value Disclosure Subordinated debt Subordinated Debt Obligations, Fair Value Disclosure Derivative financial instruments Derivative Liability Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, 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] Watch [Member] Special Mention [Member] Special Mention [Member] Substandard [Member] Substandard [Member] Doubtful [Member] Doubtful [Member] Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Fair Value Disclosures Fair Value Disclosures [Text Block] Carrying Amount of the Hedged Assets Hedged Asset, Fair Value Hedge Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) Schedule of Available-For-Sale Securities Reconciliation Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Investments Classified by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of Unrealized Loss on Investments Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of Temporarily Impaired Securities Schedule of Temporary Impairment Losses, Investments [Table Text Block] Schedule of Other Investments Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block] Measurement Frequency [Axis] Measurement Frequency [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Fair Value, Recurring [Member] Fair Value, Recurring [Member] Mortgage-backed securities [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] Significant Other Observable Inputs (Level 2) [Member] Significant Other Unobservable Inputs (Level 3) [Member] Commitments and Contingencies Disclosure [Abstract] Commitments to extend credit Unused Commitments to Extend Credit Standby letters of credit Outstanding Off balance Sheet Risks Amount Liability Contractual amount for all off-balance sheet commitments. Mortgage-backed securities (GSEs) [Member] Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Fair Value Allowance for Loan and Lease Losses [Roll Forward] Allowance for Loan and Lease Losses [Roll Forward] Beginning balance Loans charged off Allowance for Loan and Lease Losses, Write-offs Recoveries of charge-offs Allowance for Loan and Lease Loss, Recovery of Bad Debts Provision (reallocation) charged to expense Ending balance 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 Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Current Reporting Status Entity Current Reporting Status Entity Shell Company Entity Shell Company Fair Value, Nonrecurring [Member] Fair Value, Nonrecurring [Member] Impaired loans Impaired Loans Fair Value Disclosure Representing impaired loans fair value disclosure. Other real estate owned Other Real Estate Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Operating lease liabilities Lessee, Operating Lease, Liability, Payments, Due Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Fair Value Hedging [Member] Fair Value Hedging [Member] Interest Rate Swap [Member] Interest Rate Swap [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Interest income on tax-exempt securities Interest Income, Securities, Operating, Tax Exempt, Gross Interest Income, Securities, Operating, Tax Exempt, Gross Effects of fair value hedge relationships Gain (Loss) on Fair Value Hedges Recognized in Earnings Reported interest income on tax-exempt securities Interest Income, Securities, Operating, Tax Exempt Interest rate swap agreements - securities: Derivative, Gain (Loss) on Derivative, Net Other Commitments Other Commitments [Table Text Block] Presentation of Financial Information Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] 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] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] BALANCE (in shares) Shares, Outstanding BALANCE Other comprehensive income (loss) Stock awards (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Stock awards Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture Exercise of stock options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Shareholders of TN Bancshares, Inc. (in shares) Stock Issued During Period, Shares, Acquisitions Shareholders of TN Bancshares, Inc. Stock Issued During Period, Value, Acquisitions Stock compensation expense APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition BALANCE (in shares) BALANCE Loans and Leases Receivable Disclosure [Table] Loans and Leases Receivable Disclosure [Table] Collateral [Axis] Collateral [Axis] Collateral [Domain] Collateral [Domain] Collateral Pledged [Member] Collateral Pledged [Member] Loans and Leases Receivable Disclosure [Line Items] Loans and Leases Receivable Disclosure [Line Items] Restricted securities Debt Securities, Available-for-sale, Restricted Realized gains Debt Securities, Available-for-sale, Realized Gain Realized losses Debt Securities, Available-for-sale, Realized Loss Proceeds from available-for-sale securities redeemed Proceeds From Calls Of Debt Securities, Available-For-Sale Proceeds From Calls Of Debt Securities, Available-For-Sale Called debt security, realized loss Calls Of Debt Securities, Available-For-Sale, Realized Loss Calls Of Debt Securities, Available-For-Sale, Realized Loss Earnings per share Earnings Per Share [Text Block] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Financing Receivable, Troubled Debt Restructuring [Table] Financing Receivable, Troubled Debt Restructuring [Table] Residential Real Estate [Member] Residential Real Estate [Member] Loan Restructuring Modification Name [Axis] Loan Restructuring Modification Name [Axis] Loan Restructuring Modification Name [Domain] Loan Restructuring Modification Name [Domain] Trouble Debt Restructuring [Member] Trouble Debt Restructuring [Member] Financing Receivable, Troubled Debt Restructuring [Line Items] Financing Receivable, Troubled Debt Restructuring [Line Items] Loan portfolio segments Number of Reportable Segments Loans that met criteria for restructured Financing Receivable, Troubled Debt Restructuring Number of contracts, nonaccrual Financing Receivable, Nonaccrual, Number Of Contracts Financing Receivable, Nonaccrual, Number Of Contracts Number of contracts Financing Receivable, Modifications, Number of Contracts Number of contracts, subsequent payment default Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts US Government-sponsored Enterprises Debt Securities [Member] Gross Unrealized Loss Number of Securities Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions June 30, 2020 Lessee, Operating Lease, Liability, Payments, Due Next Rolling Twelve Months June 30, 2021 Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Two June 30, 2022 Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Three June 30, 2023 Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Four June 30, 2024 Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Rolling Year Five Total future minimum lease payments Amounts representing interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Present value of net future minimum lease payments Operating Lease, Liability Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] Total loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance Less: Remaining purchase discount Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Purchase Discount This relates to loans not accounted for as debt securities, with evidence for the purchase discount and which loans are not transferred. Total loans, net of purchase discount Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Net Of Purchase Discount This relates to loans not accounted for as debt securities, with evidence for the net of purchase which is acquired in the transfer of certain loans. Less: Allowance for loan losses Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses Carrying amount, net of allowance Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Appraisal And Discounted Cash Flow [Member] Appraisal And Discounted Cash Flow [Member] Appraisal And Discounted Cash Flow [Member] Appraisal [Member] Appraisal [Member] Appraisal [Member] Measurement Input Type [Axis] Measurement Input Type [Axis] Measurement Input Type [Domain] Measurement Input Type [Domain] Measurement Input, Discount Rate [Member] Measurement Input, Discount Rate [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Weighted Average [Member] Weighted Average [Member] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Impaired loans Impaired loans, measurement input Impaired Loans, Measurement Input Impaired Loans, Measurement Input Other real estate owned, measurement input Other Real Estate Owned, Measurement Input Commitments and Contingent Liabilities Commitments and Contingencies Disclosure [Text Block] Income Statement [Abstract] INTEREST INCOME Interest and Dividend Income, Operating [Abstract] Loans, including fees Interest and Fee Income, Loans and Leases Securities available-for-sale: Interest Income, Securities, Operating, by Taxable Status [Abstract] Taxable Interest Income, Securities, Operating, Taxable Tax-exempt Federal funds sold and other earning assets Federal Funds Sold and Other Earning Assets Interest income on federal funds sold. Federal funds sold represent the excess federal funds held by one commercial bank which it lends to another commercial bank, usually at an agreed-upon (federal funds) rate of interest. Such loans generally are of short-duration (overnight) and the amount of other interest earning assets not otherwise specified in the taxonomy. Total interest income Interest Income, Operating INTEREST EXPENSE Interest Expense [Abstract] Deposits Interest Expense, Deposits Securities sold under agreements to repurchase Interest Expense, Federal Funds Purchased and Securities Sold under Agreements to Repurchase Federal Home Loan Bank advances and other borrowings Interest Expense Federal Home Loan Advances And Other Borrowings Interest expense incurred during the reporting period on FHLB advances other borrowings. Subordinated debt Interest Expense, Subordinated Notes and Debentures Total interest expense Interest Expense Net interest income Interest Income (Expense), Net Provision for loan losses Provision Credit For Loan Losses Expensed Amount of (income) and expense related to loss from loan transactions. Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss NONINTEREST INCOME Noninterest Income [Abstract] Customer service fees Fees And Commissions, Depositor Accounts1 Fees And Commissions, Depositor Accounts1 Gain (loss) on sale of securities, net Debt Securities, Realized Gain (Loss) Mortgage banking Interchange and debit card transaction fees Fees And Commissions, Debit Cards1 Fees And Commissions, Debit Cards1 Merger termination fee Merger Termination Fee Revenue Merger Termination Fee Revenue Other Noninterest Income, Other Total noninterest income Noninterest Income NONINTEREST EXPENSE Noninterest Expense [Abstract] Salaries and employee benefits Labor and Related Expense Occupancy and equipment Net Occupancy and Equipment Expense Amount of net occupancy expense that may include items, such as depreciation of facilities and equipment, lease expenses, property taxes and property and casualty insurance expense and equipment expense including depreciation, repairs, rentals, and service contract costs. This item also includes equipment purchases which do not qualify for capitalization in accordance with the entity's accounting policy. This item may also include furniture expenses. FDIC insurance Federal Deposit Insurance Corporation Premium Expense Other real estate and loan related expense Foreclosed Real Estate Expense Advertising and marketing Advertising Expense Data processing Information Technology and Data Processing Professional services Professional Fees Amortization of intangibles Amortization of Intangible Assets Software as service contracts Professional and Contract Services Expense Merger related and restructuring expenses Business Combination, Acquisition Related Costs Other Other Noninterest Expense Total noninterest expense Noninterest Expense Income before income tax expense Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net income EARNINGS PER COMMON SHARE Basic (in dollars per share) Diluted (in dollars per share) Weighted average common shares outstanding Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Diluted (in shares) Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Federal Reserve Bank Stock [Member] Federal Reserve Bank Stock [Member] Federal Reserve Bank Stock [Member] Federal Home Loan Bank Stock [Member] Investment in Federal Home Loan Bank Stock [Member] First National Bankers Bank Stock [Member] First National Bankers Bank Stock [Member] First National Bankers Bank Stock [Member] Debt and Equity Securities, FV-NI [Line Items] Debt and Equity Securities, FV-NI [Line Items] Other investments Equity Securities without Readily Determinable Fair Value, Amount Mortgage-backed securities [Member] Collateralized Mortgage Backed Securities [Member] Securities Available for Sale, Due in one year or less, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Securities Available for Sale, Due from one year to five years, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Securities Available for Sale, Due from five years to ten years, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Securities Available for Sale, Due after ten years, Amortized Cost Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Securities Available for Sale, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Mortgage-backed securities, Amortized Cost Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost Securities Available for Sale, Due in one year or less, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Securities Available for Sale, Due from one year to five years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Securities Available for Sale, Due from five years to ten years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Securities Available for Sale, Due after ten years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Securities Available for Sale, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value Mortgage-backed securities, Fair Value Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value Securities available for sale