Fair Value Disclosures [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Recurring Fair Value, Recurring [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 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] U.S. Treasuries US Treasury Securities [Member] U.S. Government agencies US Treasury and Government [Member] State and political subdivisions US States and Political Subdivisions Debt Securities [Member] Residential mortgage-backed securities Residential Mortgage Backed Securities [Member] Commercial mortgage-backed securities Commercial Mortgage Backed Securities [Member] Corporate bonds Corporate Debt Securities [Member] Asset-backed securities Asset-backed Securities [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] Assets: Assets, Fair Value Disclosure [Abstract] Debt securities available-for-sale Debt Securities, Available-for-sale Equity securities with readily available fair values Equity Securities, FV-NI Mortgage loans held for sale Mortgages Held-for-sale, Fair Value Disclosure Deferred compensation plan assets Deferred Compensation Plan Assets Servicing rights for SBA/USDA loans Servicing Asset at Fair Value, Amount Residential mortgage servicing rights Residential Mortgage Servicing Asset at Fair Value, Amount Residential Mortgage Servicing Asset at Fair Value, Amount Derivative financial instruments Derivative Asset Total assets Assets, Fair Value Disclosure Liabilities: Liabilities, Fair Value Disclosure [Abstract] Deferred compensation plan liability Deferred Compensation Liability, Current and Noncurrent Derivative financial instruments Derivative Liability Total liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Receivables [Abstract] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Loans receivable Loans Receivable [Member] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Commercial Commercial Portfolio Segment [Member] Residential Residential Portfolio Segment [Member] Consumer Consumer Portfolio Segment [Member] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Owner occupied commercial real estate Owner Occupied Commercial Real Estate [Member] Represents information of owner occupied commercial real estate. Income producing commercial real estate Income Producing Commercial Real Estate [Member] Property that represents income producing commercial real estate. Commercial & industrial Commercial And Industrial Classification [Member] Commercial And Industrial Classification[Member] Construction Construction Loans [Member] Equipment financing Equipment Financing [Member] Represents information related to equipment financing. Residential mortgage Residential Mortgage [Member] Home equity lines of credit Home Equity Line of Credit [Member] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Financing Receivable, Recorded Investment, Aging [Abstract] Financing Receivable, Recorded Investment, Aging [Abstract] Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance [Abstract] Unpaid Principal Balance, With no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Unpaid Principal Balance, With an allowance recorded Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Unpaid Principal Balance Impaired Financing Receivable, Unpaid Principal Balance Recorded Investment Impaired Financing Receivable, Recorded Investment [Abstract] Recorded Investment, With no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Recorded Investment Recorded Investment, With allowance recorded Impaired Financing Receivable, with Related Allowance, Recorded Investment Recorded Investment Impaired Financing Receivable, Recorded Investment Allowance for Loan Losses Allocated Impaired Financing Receivable, Related Allowance Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Indirect auto Automobile Loan [Member] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period Of Adoption [Axis] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period Of Adoption [Domain] [Domain] for Cumulative Effect, Period Of Adoption [Axis] Adoption of CECL Cumulative Effect, Period Of Adoption, Adjustment [Member] Cumulative Effect, Period Of Adoption, Adjustment [Member] Adjusted Balance Cumulative Effect, Period Of Adoption, Adjusted Balance [Member] Cumulative Effect, Period Of Adoption, Adjusted Balance [Member] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Allowance for Credit Loss Financing Receivable, Allowance for Credit Loss [Roll Forward] Allowance for credit losses - loans, Beginning Balance Financing Receivable, Allowance for Credit Loss Allowance for credit losses - loans, Charge-Offs Financing Receivable, Allowance for Credit Loss, Writeoff Allowance for credit losses - loans, Recoveries Financing Receivable, Allowance for Credit Loss, Recovery Allowance for credit losses - loans, (Release) Provision Financing Receivable, Credit Loss, Expense (Reversal) Allowance for credit losses - loans, Ending Balance Allowance for unfunded commitments, Beginning Balance Off-Balance Sheet, Credit Loss, Liability Allowance for unfunded commitments, (Release) Provision Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) Allowance for unfunded commitments, Ending Balance Total allowance for credit losses, Beginning Balance Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability Total allowance for credit losses, Charge-Offs Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Writeoff Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Writeoff Total allowance for credit losses, Recoveries Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Recovery Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Recovery Total allowance for credit losses, (Release) Provision Provision for Loan, Lease, and Other Losses Total allowance for credit losses, Ending Balance Statement of Stockholders' Equity [Abstract] Exercises of stock options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Common stock issued to dividend reinvestment plan and employee benefits plans (in shares) Stock Issued During Period Shares Dividend Reinvestment Plan and Employee Benefit Plans This element represents number of common stock issued to dividend reinvestment plan and employee benefit plans. Vesting of restricted stock, net of shares surrendered to cover payroll taxes, shares issued (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Vesting of restricted stock, net of shares surrendered to cover payroll taxes, shares deferred (in shares) Vesting Of Restricted Stock Shares Deferred This element represents value of common stock issued to dividend reinvestment plan and employee benefit plans. Purchases of common stock (in shares) Stock Repurchased and Retired During Period, Shares Shares issued from deferred compensation plan, net of shares surrendered to cover payroll taxes (in shares) Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Common stock dividends (in dollars per share) Common Stock, Dividends, Per Share, Declared 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 Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Securities held-to-maturity Debt Securities, Held-to-maturity, Fair Value Loans and leases, net Loans Receivable, Fair Value Disclosure Liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Deposits Deposits, Fair Value Disclosure Long-term debt Long-term Debt, Fair Value Average balances of impaired loans and income recognized on impaired loans Average Balances Of Impaired Loans And Income Recognized On Impaired Loans [Abstract] Average Balance Impaired Financing Receivable, Average Recorded Investment Interest Revenue Recognized During Impairment Impaired Financing Receivable, Interest Income, Accrual Method Cash Basis Interest Revenue Received Impaired Financing Receivable, Interest Income, Cash Basis Method Share-based Payment Arrangement [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Title of Individual [Axis] Title of Individual [Axis] Title of Individual [Domain] Title of Individual [Domain] Employees Employee [Member] Employee Directors Director [Member] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Restricted Stock Units Restricted Stock Units (RSUs) [Member] Stock Options Share-based Payment Arrangement, Option [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Plan vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Plan exercisable period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Additional awards remaining available under plan (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Stock options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Compensation expense Share-based Payment Arrangement, Expense Income tax benefit related to expense for share-based awards Share-based Payment Arrangement, Expense, Tax Benefit Unrecognized compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Recognition period for unrecognized compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Earnings Per Share [Abstract] Earnings Per Share Earnings Per Share [Text Block] Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Cash and due from banks Cash and Due from Banks Interest-bearing deposits in banks Interest-bearing Deposits in Banks and Other Financial Institutions Cash and cash equivalents Cash, Cash Equivalents, and Federal Funds Sold Debt securities held-to-maturity (fair value $301,595 and $287,904) Debt Securities, Held-to-maturity Loans held for sale at fair value Loans Held-for-sale, Fair Value Disclosure Loans and leases held for investment Financing Receivable, before Allowance for Credit Loss Less allowance for credit losses - loans and leases Loans and leases, net Financing Receivable, after Allowance for Credit Loss Premises and equipment, net Property, Plant and Equipment, Net Bank owned life insurance Bank Owned Life Insurance Accrued interest receivable Accrued Investment Income Receivable Net deferred tax asset Deferred Income Tax Assets, Net Derivative financial instruments Derivative Asset, Fair Value, Gross Asset Goodwill and other intangible assets, net Intangible Assets, Net (Including Goodwill) Other assets Other Assets Total assets Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Liabilities: Liabilities [Abstract] Deposits: Deposits [Abstract] Noninterest-bearing demand Noninterest-bearing Deposit Liabilities Interest-bearing deposits Interest-bearing Deposit Liabilities Total deposits Deposits Long-term debt Long-term Debt Derivative financial instruments Derivative Liability, Fair Value, Gross Liability Accrued expenses and other liabilities Accrued Liabilities and Other Liabilities Total liabilities Liabilities Shareholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, $1 par value; 150,000,000 shares authorized; 78,283,544 and 79,013,729 shares issued and outstanding Common Stock, Value, Issued Common stock issuable; 591,053 and 664,640 shares Common Stocks Issuable Represents amount of carrying amount of common stock issuable. Capital surplus Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders' equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders' equity Liabilities and Equity Financing Receivable, Allowance for Credit Loss [Line Items] Loans Outstanding, Individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Loans Outstanding, Collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment PCI Loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net Loans Outstanding, Ending Balance Loans and Leases Receivable, Net of Deferred Income Allowance for credit losses, Individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Allowance for credit losses, Collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Allowance for credit losses, PCI Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses Allowance for credit losses, Ending balance Allowance for unfunded commitments, Individually evaluated for impairment Off-Balance Sheet Liability, Credit Loss Liability, Individually Evaluated For Impairment Off-Balance Sheet Liability, Credit Loss Liability, Individually Evaluated For Impairment Allowance for unfunded commitments, Collectively evaluated for impairment Off-Balance Sheet Liability, Credit Loss Liability, Collectively Evaluated For Impairment Off-Balance Sheet Liability, Credit Loss Liability, Collectively Evaluated For Impairment Allowance for unfunded commitments, Ending Balance Total allowance for credit losses, Individually evaluated for impairment Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Individually Evaluated For Impairment Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Individually Evaluated For Impairment Total allowance for credit losses, Collectively evaluated for impairment Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Collectively Evaluated For Impairment Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, Collectively Evaluated For Impairment Total allowance for credit losses, PCI Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, PCI Financing Receivable Allowance For Credit Loss And Off-Balance Sheet Credit Loss Liability, PCI Total allowance for credit losses, Ending Balance 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 Pass [Member] Watch Watch [Member] Represents watch. Substandard Substandard [Member] Doubtful / Loss Doubtful [Member] Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Risk category of loans by class of loans Risk Category Of Loans By Class Of Loans [Abstract] Risk category of loans by class of loans. Total loans, excluding PCI loans Financing Receivable, before Allowance for Credit Loss, Excluding Purchased Credit Impaired Loans Financing Receivable, before Allowance for Credit Loss, Excluding Purchased Credit Impaired Loans Total loans Minimum future lease payments expected to be received Sales-type and Direct Financing Leases, Lease Receivable, Fiscal Year Maturity [Abstract] Remainder of 2020 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Remainder of Fiscal Year 2021 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Two Years 2022 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Three Years 2023 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years 2024 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Five Years Thereafter Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Thereafter Total Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Derivative liabilities - risk participations Derivative Liabilities Risk Participations [Member] Represents derivative liabilities risk participations. Derivative liabilities - other Derivative Liability [Member] Represents Derivative Liability. Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Servicing rights for SBA/USDA loans SBA Servicing Rights [Member] Represents SBA servicing rights. Residential mortgage servicing rights Residential Mortgage Servicing Rights [Member] Residential Mortgage Servicing Rights [Member] Derivative assets - mortgage Derivative Asset [Member] Represents Derivative Asset. Derivative assets - other Derivative Assets Other [Member] Represents information about Derivative assets other. Measurement Input Type [Axis] Measurement Input Type [Axis] Measurement Input Type [Domain] Measurement Input Type [Domain] Discount Rate Measurement Input, Discount Rate [Member] Prepayment Rate Measurement Input, Prepayment Rate [Member] Pull Through Rate Measurement Input, Pull Through Rate [Member] Measurement Input, Pull Through Rate [Member] Probable Exposure Rate Measurement Input, Probable Exposure Rate [Member] Measurement Input, Probable Exposure Rate [Member] Probability of Default Rate Measurement Input, Default Rate [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Weighted Average Weighted Average [Member] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Servicing rights for SBA/USDA loans, measurement input Servicing Asset, Measurement Input Residential mortgage servicing rights, measurement input Residential Mortgage Servicing Asset Measurement Input Residential Mortgage Servicing Asset, Measurement Input Derivative assets Derivative assets, measurement input Derivative Asset, Measurement Input Derivative liabilities Derivative liabilities, measurement input Derivative Liability, Measurement Input Valuation technique Fair Value Measurements, Valuation Processes, Description Accounting Policies [Abstract] Marketable Securities [Table] Marketable Securities [Table] Debt Security Category [Axis] Debt Security Category [Axis] Debt Security Category [Domain] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Held-to-maturity debt securities Held-to-maturity Securities [Member] Available-for-sale debt securities Available-for-sale Securities [Member] Marketable Securities [Line Items] Marketable Securities [Line Items] Allowance for credit losses, held-to-maturity portfolio Debt Securities, Held-to-maturity, Allowance for Credit Loss Allowance for credit losses, available-for-sale portfolio Debt Securities, Available-for-sale, Allowance for Credit Loss Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Common Stock Issuable Common Stock Issuable [Member] Common stock issuable. Capital Surplus Additional Paid-in Capital [Member] Retained Earnings (Accumulated Deficit) Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Adoption of new accounting standard Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance Net income Net Income (Loss) Attributable to Parent Other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Common stock issued to dividend reinvestment plan and employee benefit plans Common Stock Issued To Dividend Reinvestment Plan and Employee Benefit Plans Value This element represents amount of common stock issued to dividend reinvestment plan and employee benefit plans. Amortization of stock options and or restricted stock awards APIC, Share-based Payment Arrangement, Increase for Cost Recognition Vesting of restricted stock, net of shares surrendered to cover payroll taxes Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Purchases of common stock Stock Repurchased and Retired During Period, Value Deferred compensation plan, net, including dividend equivalents Deferred Compensation Plan Net Including Dividend Equivalents Represents the value of deferred compensation plan, net, including dividend equivalents. Shares issued from deferred compensation plan, net of shares surrendered to cover payroll taxes Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Common stock dividends Dividends, Common Stock, Cash Ending balance Investments, Debt and Equity Securities [Abstract] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] U.S. Government agencies US Government Agencies Debt Securities [Member] Residential mortgage-backed securities, Agency Residential Mortgage-Backed Securities, Issued By US Government Sponsored Enterprises [Member] Debt securities collateralized by residential real estate mortgage loans (mortgages), issued by US Government Sponsored Enterprises, such as Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac). Residential mortgage-backed securities, Non-agency Residential Mortgage-Backed Securities, Issued By Private Enterprises [Member] Debt securities collateralized by residential real estate mortgage loans (mortgages), issued by non-governmental sponsored enterprises. Commercial mortgage-backed, Agency Commercial Mortgage-Backed Securities, Issued By US Government Sponsored Enterprises [Member] Debt securities collateralized by commercial real estate mortgage loans (mortgages), issued by US Government Sponsored Enterprises, such as Federal Home Loan Mortgage Corporation (FHLMC or Freddie Mac). Commercial mortgage-backed, Non-agency Commercial Mortgage-Backed Securities, Issued By Private Enterprises [Member] Debt securities collateralized by commercial real estate mortgage loans (mortgages), issued by non-governmental sponsored enterprises. Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Debt securities available for sale and equity securities: Debt Securities, Available-for-sale [Abstract] 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 Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding, beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Outstanding, ending balance (in shares) Exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted- Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding, beginning balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Expired (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Outstanding, ending balance (in dollars per share) Exercisable (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted-Average Remaining Contractual Term (Years), Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted-Average Remaining Contractual Term (Years), Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate Intrinsic Value, Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate Intrinsic Value, Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Equity [Abstract] Schedule of reclassifications out of accumulated other comprehensive income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock options Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities excluded from computation (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted average exercise price of stock options (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Repurchase program authorized amount Stock Repurchase Program, Authorized Amount Shares repurchased (in shares) Treasury Stock, Shares, Acquired Repurchase program remaining authorization Stock Repurchase Program, Remaining Authorized Repurchase Amount Commitments and Contingencies Disclosure [Abstract] Schedule of contractual amount of off-balance sheet instruments Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block] Proceeds from sales Proceeds from Sale of Debt Securities, Available-for-sale Gross gains on sales Debt Securities, Available-for-sale, Realized Gain Gross losses on sales Debt Securities, Available-for-sale, Realized Loss Net losses on sales of securities Debt Securities, Available-for-sale, Realized Gain (Loss) Income tax benefit attributable to sales Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Common Stock Stockholders' Equity Note Disclosure [Text Block] Banking and Thrift [Abstract] Schedule of minimum amounts required for capital adequacy purposes Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Accounting Changes and Error Corrections [Abstract] Accounting Standards Updates and Recently Adopted Standards New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Outstanding, beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Cancelled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Outstanding, ending balance (in shares) Weighted- Average Grant- Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Outstanding, beginning balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Cancelled (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Outstanding, ending balance (in dollars per share) Weighted-Average Remaining Contractual Term (Years), Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Aggregate Intrinsic Value, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Aggregate Intrinsic Value, Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding Stock-Based Compensation Share-based Payment Arrangement [Text Block] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Total securities other than mortgage-backed securities Securities Other Than Mortgage Backed Securities [Member] Securities other than mortgage backed securities. Debt and Equity Securities, FV-NI [Line Items] Debt and Equity Securities, FV-NI [Line Items] Available-for-Sale, Amortized Cost Debt Securities, Available-for-sale, Maturity, Amortized Cost, Rolling Maturity [Abstract] Available-for-Sale, Amortized Cost, Within 1 year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Available-for-Sale, Amortized Cost, 1 to 5 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost Available-for-Sale, Amortized Cost, 5 to 10 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Amortized Cost Available-for-Sale, Amortized Cost, More than 10 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost Available-for-Sale, Fair Value Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract] Available-for-Sale, Fair Value, Within 1 year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Available-for-Sale, Fair Value, 1 to 5 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Available-for-Sale, Fair Value, 5 to 10 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value Available-for-Sale, Fair Value, More than 10 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Fair Value Held-to-Maturity, Amortized Cost Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract] Held-to-Maturity, Amortized Cost, Within 1 year Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Held-to-Maturity, Amortized Cost, 1 to 5 years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Held-to-Maturity, Amortized Cost, 5 to 10 years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Held-to-Maturity, Amortized Cost, More than 10 years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Amortized Cost Amortized Cost Held-to-Maturity, Fair Value Debt Securities, Held-to-maturity, Maturity, Fair Value, Rolling Maturity [Abstract] Held-to-Maturity, Fair Value, Within 1 year Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Held-to-Maturity, Fair Value, 1 to 5 years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Held-to-Maturity, Fair Value, 5 to 10 years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value Held-to-Maturity, Fair Value, More than 10 years Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Fair value Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Not designated as hedging instrument, economic hedge Not Designated as Hedging Instrument, Economic Hedge [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate swaps Interest Rate Swap [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Fair value hedging of interest rate risk Fair Value Hedging [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Number of derivative contracts outstanding Number of Interest Rate Derivatives Held Aggregate notional amount Derivative, Notional Amount Schedule of cost basis, gross unrealized gains and losses and fair value of securities held to maturity Debt Securities, Held-to-maturity [Table Text Block] Schedule of cost basis, unrealized gains and losses, and fair value of securities available for sale Debt Securities, Available-for-sale [Table Text Block] Schedule of held to maturity securities in an unrealized loss position Unrealized Gain Loss On Held To Maturity Securities [Table Text Block] Unrealized gain loss on held to maturity securities. Schedule of available for sale securities in an unrealized loss position Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block] Schedule of summary of securities sales activities Schedule of Realized Gain (Loss) [Table Text Block] Schedule of amortized cost and fair value of available for sale and held to maturity securities by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] Income Statement [Abstract] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Service charges and fees Deposit Account [Member] Mortgage loan gains and other related fees Mortgage Banking [Member] Interest revenue: Interest and Dividend Income, Operating [Abstract] Loans, including fees Interest and Fee Income, Loans and Leases Investment securities, including tax exempt of $1,523 and $1,169 Interest and Dividend Income, Securities, Operating Deposits in banks and short-term investments Federal Funds Sold Commercial Paper and Deposits In Banks Represents amount of federal funds sold, commercial paper and deposits in banks. Total interest revenue Interest and Dividend Income, Operating Interest expense: Interest Expense [Abstract] Deposits Interest Expense, Deposits Short-term borrowings Interest Expense, Other Short-term Borrowings Federal Home Loan Bank advances Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Short-term Long-term debt Interest Expense, Long-term Debt Total interest expense Interest Expense Net interest revenue Interest Income (Expense), Net Provision for credit losses Net interest revenue after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Noninterest income: Noninterest Income [Abstract] Service charges and other related fees Noninterest Income, Other Brokerage fees Brokerage Commissions Revenue Gains from sales of other loans, net Gain (Loss) on Sales of Loans, Net Securities losses, net Other Noninterest Income, Other Operating Income Total noninterest income Noninterest Income Total revenue Revenues Noninterest expenses: Operating Expenses [Abstract] Salaries and employee benefits Labor and Related Expense Communications and equipment Communications and Information Technology Occupancy Occupancy, Net Advertising and public relations Marketing and Advertising Expense Postage, printing and supplies Supplies and Postage Expense Professional fees Professional Fees Lending and loan servicing expense Loan Portfolio Expense Outside services - electronic banking Noninterest Expense, Outside Services Electronic Banking Noninterest Expense, Outside Services Electronic Banking FDIC assessments and other regulatory charges Federal Deposit Insurance Corporation Premium Expense Amortization of intangibles Amortization of Intangible Assets Merger-related and other charges Business Combination, Acquisition Related Costs Other Other Noninterest Expense Total noninterest expenses Noninterest Expense Net income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net income Net income available to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Net income per common share: Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Designated as hedging instrument Designated as Hedging Instrument [Member] Not designated as hedging instrument Not Designated as Hedging Instrument [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Derivative assets Derivative Financial Instruments, Assets [Member] Derivative liabilities Derivative Financial Instruments, Liabilities [Member] Brokered time deposits Brokered Certificate Of Deposit [Member] Represents the brokered certificate of deposits. Customer derivative positions Customer Swap Position [Member] Represents the customer swap positions. Dealer offsets to customer derivative positions Dealer Offset To Customer Swap Position [Member] Represents the dealer offset to customer swap position. Risk participations Risk Participations [Member] Represents information about risk participations. Mortgage banking - loan commitment Mortgage Banking Loan Commitment [Member] Represents information of mortgage banking - loan commitment. Mortgage banking - forward sales commitment Mortgage Banking Forward Sales Commitment [Member] Represents mortgage banking - forward sales commitment. Bifurcated embedded derivatives Bifurcated Embedded Derivative [Member] Represents the bifurcated embedded derivatives. Dealer offsets to bifurcated embedded derivatives Dealer Offsets To Bifurcated Embedded Derivatives [Member] Represents the dealer offsets to bifurcated embedded derivatives. De-designated hedges De Designated Cash Flow Hedge [Member] Represents de-designated cash flow hedge. Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Derivative Asset [Abstract] Derivative Asset [Abstract] Derivatives designated as hedging instruments Fair Value Hedge Assets Derivatives not designated as hedging instruments Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value Total gross derivative instruments Less: Amounts subject to master netting agreements Derivative Asset, Not Offset, Policy Election Deduction Less: Cash collateral received/pledged Derivative Asset, Fair Value of Collateral Net amount Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election Derivative Liability [Abstract] Derivative Liability [Abstract] Derivatives designated as hedging instruments Fair Value Hedge Liabilities Derivatives not designated as hedging instruments Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value Total gross derivative instruments Less: Amounts subject to master netting agreements Derivative Liability, Not Offset, Policy Election Deduction Less: Cash collateral received/pledged Derivative Liability, Fair Value of Collateral Derivatives designated as hedging instruments: Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election Investment securities, tax exempt Interest Income, Securities, Operating, Tax Exempt Schedule of stock option activity Share-based Payment Arrangement, Option, Activity [Table Text Block] Schedule of restricted stock units activity Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Schedule of computation of basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of fair value of derivative financial instruments Schedule of Derivative Instruments [Table Text Block] Schedule of effect of derivatives in fair value hedging relationships on the consolidated statement of income Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Schedule of carrying amount and cumulative fair value hedging adjustments on hedged liability Schedule Of Fair Value Hedging Instruments, Carrying Value And Basis Adjustments [Table Text Block] Schedule Of Fair Value Hedging Instruments, Carrying Value And Basis Adjustments [Table Text Block] Schedule of gains and losses recognized in income on derivatives not designated as hedging instruments Derivatives Not Designated as Hedging Instruments [Table Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill Goodwill Disclosure [Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] United Community Bank Subsidiaries [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Common equity tier 1 capital, Minimum Common Equity Tier One Capital Required For Capital Adequacy To Risk Weighted Assets Common Equity Tier One Capital Required For Capital Adequacy To Risk Weighted Assets. Common equity tier 1 capital, Well Capitalized Common Equity Tier 1 Capital Required To Be Well Capitalized To Risk Weighted Assets Common Equity Tier 1 Capital Required To Be Well Capitalized To Risk Weighted Assets. Common equity tier 1 capital Common Equity Tier One Capital Ratio Tier 1 capital, Minimum Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Tier 1 capital, Well Capitalized Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 capital Tier One Risk Based Capital to Risk Weighted Assets Total capital, Minimum Capital Required for Capital Adequacy to Risk Weighted Assets Total capital, Well Capitalized Capital Required to be Well Capitalized to Risk Weighted Assets Total capital Capital to Risk Weighted Assets Leverage ratio, Minimum Tier One Leverage Capital Required for Capital Adequacy to Average Assets Leverage ratio, Well Capitalized Tier One Leverage Capital Required to be Well Capitalized to Average Assets Leverage ratio Tier One Leverage Capital to Average Assets Common equity tier 1 capital Common Equity Tier One Capital Tier 1 capital Tier One Risk Based Capital Total capital Capital Risk-weighted assets Risk Weighted Assets Average total assets for the leverage ratio Regulatory Assets Summary of available for sale securities in an unrealized loss position Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] Fair Value, Less than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months Unrealized Loss, Less than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Fair Value, 12 Months or More Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Unrealized Loss, 12 Months or More Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Fair Value, Total Debt Securities, Available-for-sale, Unrealized Loss Position Unrealized Loss, Total Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Statement of Comprehensive Income [Abstract] Net income, Before-tax Amount Net income, Tax (Expense) Benefit Net income, Net of Tax Amount Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized gains on available-for-sale securities: Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax [Abstract] Unrealized holding gains arising during period, Before-tax Amount Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax Unrealized holding gains arising during period, Tax (Expense) Benefit Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax Unrealized holding gains arising during period, Net of Tax Amount Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Reclassification adjustment for losses included in net income, Before-tax Amount Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Reclassification adjustment for losses included in net income, Tax (Expense) Benefit Reclassification adjustment for losses included in net income, Net of Tax Amount Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Net unrealized gains, Before-tax Amount Other Comprehensive Income Loss Unrealized Holding Gain Loss On Securities Net Of Reclassification and Valuation Allowance Arising During Period Before Tax Other comprehensive income loss unrealized holding gain loss on securities net of reclassification and valuation allowance arising during period before tax. Net unrealized gains, Tax (Expense) Benefit Other Comprehensive Income Loss Unrealized Holding Gain Loss On Securities Net Of Reclassification and Valuation Allowance Arising During Period Tax Effect Other comprehensive income loss unrealized holding gain loss on securities net of reclassification and valuation allowance arising during period tax effect. Net unrealized gains, Net of Tax Amount Other Comprehensive Income Loss Unrealized Holding Gain Loss On Securities Net Of Reclassification and Valuation Allowance Arising During Period Net Of Tax Other comprehensive income loss unrealized holding gain loss on securities net of reclassification and valuation allowance arising during period net of tax. Amortization of losses included in net income on available-for-sale securities transferred to held-to-maturity, Before-tax Amount Other Comprehensive Income, Reclassification Adjustment For Available For Sale Transferred To Held To Maturity Securities, Before Tax Other Comprehensive Income, Reclassification Adjustment For Available For Sale Transferred To Held To Maturity Securities, Before Tax Amortization of losses included in net income on available-for-sale securities transferred to held-to-maturity, Tax (Expense) Benefit Other Comprehensive Income, Reclassification Adjustment For Available For Sale Transferred To Held To Maturity Securities, Tax Other Comprehensive Income, Reclassification Adjustment For Available For Sale Transferred To Held To Maturity Securities, Tax Amortization of losses included in net income on available-for-sale securities transferred to held-to-maturity, Net of Tax Amount Other Comprehensive Income, Reclassification Adjustment For Available For Sale Transferred To Held To Maturity Securities, After Tax Other Comprehensive Income, Reclassification Adjustment For Available For Sale Transferred To Held To Maturity Securities, After Tax Amortization of losses included in net income on terminated derivative financial instruments that were previously accounted for as cash flow hedges, Before-tax Amount Other Comprehensive Income Loss Amortization Of Losses Included In Net Income On Terminated Derivative Financial Instruments Which Previously Accounted For As Cash Flow Hedges Before Tax Represents the amount before tax related to amortization of losses included in net income on terminated derivative financial instruments that were previously accounted for as cash flow hedges. Amortization of losses included in net income on terminated derivative financial instruments that were previously accounted for as cash flow hedges, Tax (Expense) Benefit Other Comprehensive Income Loss Amortization Of Losses Included In Net Income On Terminated Derivative Financial Instruments Which Previously Accounted For As Cash Flow Hedges Tax Represents the amount of tax expense (benefit) related to amortization of losses included in net income on terminated derivative financial instruments that were previously accounted for as cash flow hedges. Amortization of losses included in net income on terminated derivative financial instruments that were previously accounted for as cash flow hedges, After-tax Amount Other Comprehensive Income Loss Amortization Of Losses Included In Net Income On Terminated Derivative Financial Instruments Which Previously Accounted For As Cash Flow Hedges Net Of Tax Represents the amount after tax related to amortization of losses included in net income on terminated derivative financial instruments that were previously accounted for as cash flow hedges. Amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, Before-tax Amount Other Comprehensive Income Loss Amortization Of Prior Service Cost And Actuarial Losses Included In Net Periodic Pension Cost For Defined Benefit Pension Plan Before Tax Amount Represents amount of other comprehensive income (loss) amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, before tax amount. Amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, Tax (Expense) Benefit Other Comprehensive Income Loss Amortization Of Prior Service Cost And Actuarial Losses Included In Net Periodic Pension Cost For Defined Benefit Pension Plan Tax Expense Benefit1 Represents amount of other comprehensive income (loss) amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, tax expense benefit. Amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, Net of Tax Amount Other Comprehensive Income Loss Amortization Of Prior Service Cost And Actuarial Losses Include Net Periodic Pension Cost For Defined Benefit Pension Plan Net Of Tax Other comprehensive income amortization of prior service cost and actuarial losses included in net periodic pension cost for defined benefit pension plan, net of tax. Total other comprehensive income, Before-tax Amount Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Total other comprehensive income, Tax (Expense) Benefit Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Total other comprehensive income, net of tax amount Comprehensive income, Before-tax Amount Comprehensive Income Loss Before Tax Represents amount of comprehensive income (loss) before tax. Comprehensive income, Tax (Expense) Benefit Comprehensive Income Loss Tax Represents amount of comprehensive income loss tax. Comprehensive income, Net of Tax Amount Comprehensive Income (Loss), Net of Tax, Attributable to Parent Changes in balance of accretable yield for PCI loans Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] Balance at beginning of period Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Accretion Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Accretion Reclassification from nonaccretable difference Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference Changes in expected cash flows that do not affect nonaccretable difference Changes In Expected Cash Flows That Do Not Affect Nonaccretable Difference Represents changes in expected cash flows that do not affect nonaccretable difference. Balance at end of period Carrying value of securities pledged to secure public deposits, derivatives and other secured borrowings Pledged Financial Instruments, Not Separately Reported, Securities Number of available-for-sale securities in unrealized loss position Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions Number of held-to-maturity securities in unrealized loss position Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Other-than-temporary impairment charges Other than Temporary Impairment Losses, Investments Debt securities held to maturity, fair value Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock authorized (in shares) Common Stock, Shares Authorized Common stock issued (in shares) Common Stock, Shares, Issued Common stock outstanding (in shares) Common Stock, Shares, Outstanding Common stock issuable (in shares) Common Stock Issuable, Shares Represents number of shares of common stock issuable. Debt Securities, Held-to-maturity [Table] Debt Securities, Held-to-maturity [Table] Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-maturity Securities [Line Items] Summary of held to maturity securities in an unrealized loss position Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position [Abstract] Fair Value, Less than 12 Months Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value Unrealized Loss, Less than 12 Months Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Fair Value, 12 Months or More Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value Unrealized Loss, 12 Months or More Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Fair Value, Total Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value Unrealized Loss, Total Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss Loans and Leases and Allowance for Credit Losses Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Loans and Leases Receivable Disclosure [Table] Loans and Leases Receivable Disclosure [Table] Equipment financing Accounts, Notes, Loans and Financing Receivable [Line Items] Loans and Leases Receivable Disclosure [Line Items] Classifications of loans Loans and Leases Receivable, Net Amount [Abstract] Less allowance for credit losses - loans Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassifications Out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Member] Realized gains (losses) on available-for-sale securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] Amortization of losses included in net income on available-for-sale securities transferred to held to maturity Accumulated Amortization Of Gains Included In Net Income On Available For Sale Securities Transferred To Held To Maturity [Member] Represents accumulated amortization of gains included in net income on available for sale securities transferred to held to maturity. Amortization of losses included in net income on derivative financial instruments accounted for as cash flow hedges: Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Prior service cost Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Actuarial losses Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] Reclassifications related to defined benefit pension plan activity Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Securities losses, net Investment securities interest revenue Deposit interest expense Salaries and employee benefits expense Other expense Total before tax Income tax (expense) benefit Accounting Policies Significant Accounting Policies [Text Block] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Retained earnings Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] ASC 326 Accounting Standards Update 2016-13 [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Increase in ACL Increase in ACL for loans Increase in ACL for unfunded commitments Increase reclassified from amortized cost basis of PCD financial assets previously classified as PCI Financing Receivable, Change in Method, Credit Loss Expense (Reversal) Reduction in equity Restricted stock units Computation of basic and diluted earnings per share Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Dividends and undistributed earnings allocated to unvested shares Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Net income available to common shareholders Weighted average shares outstanding: Effect of dilutive securities Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Dilutive securities (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Diluted (in shares) Net income per common share: Earnings Per Share, Basic and Diluted [Abstract] Schedule of assets and liabilities measured at fair value on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of assets measured at fair value on a recurring basis using significant unobservable inputs Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Schedule of quantitative information about Level 3 fair value measurements for fair value on a recurring basis Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Schedule of presentation of united's assets and liabilities measured at fair value on nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Schedule of carrying amount and fair values for other financial instruments that are not measured at fair value on a recurring basis Fair Value, by Balance Sheet Grouping [Table Text Block] Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Short-term deferrals Payment Deferral [Member] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Axis] Financial Instrument Performance Status [Domain] Financial Instrument Performance Status [Domain] Performing Performing Financial Instruments [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Cash dividend declared per common share (in dollars per share) Dividend payable date Dividends Payable, Date to be Paid Dividend date of record Dividends Payable, Date of Record Number of PPP loans authorized by SBA Number Of Paycheck Protection Program Loans Authorized By SBA Number Of Paycheck Protection Program Loans Authorized By SBA Value of PPP loans authorized by SBA Value Of Paycheck Protection Program Loans Authorized By SBA Value Of Paycheck Protection Program Loans Authorized By SBA Amount of loans Derivative [Table] Derivative [Table] Fair value hedging Deposits Deposit Balance Sheet Account [Member] Deposit Balance Sheet Account [Member] Derivative [Line Items] Derivative [Line Items] Carrying amount of Assets (Liabilities) Hedged Liability, Fair Value Hedge Hedge Accounting Basis Adjustment Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) Customer derivatives and dealer offsets Customer Derivatives And Dealer Offsets [Member] Information of Customer Derivatives And Dealer Offsets. Bifurcated embedded derivatives and dealer offsets Bifurcated Embedded Derivatives And Dealer Offsets [Member] Bifurcated embedded derivatives and dealer offsets. Mortgage banking derivatives Mortgage Banking Derivatives [Member] Information of Mortgage banking derivatives. Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Other noninterest income Other Noninterest Income [Member] Information of other noninterest income [Member] Mortgage loan revenue Mortgage Loan Revenue [Member] Information of mortgage loan revenue. Derivative Instruments, Gain (Loss) [Line Items] Amount of Gain (Loss) Recognized in Income on Derivative Derivative, Gain (Loss) on Derivative, Net Financing Receivable, Troubled Debt Restructuring [Table] Financing Receivable, Troubled Debt Restructuring [Table] Rate Reduction Contractual Interest Rate Reduction [Member] Structure Extended Maturity [Member] Other Other Type Of Modification [Member] Represents type of modification other not defined elsewhere. Financing Receivable, Troubled Debt Restructuring [Line Items] Financing Receivable, Troubled Debt Restructuring [Line Items] Number of Contracts Financing Receivable, Modifications, Number of Contracts Pre-modification Outstanding Amortized Cost Financing Receivable, Troubled Debt Restructuring, Premodification Post-Modification Outstanding Amortized Cost by Type of Modification Financing Receivable, Troubled Debt Restructuring, Postmodification Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Number of Contracts Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts Modified Within the Previous Twelve Months that Have Subsequently Defaulted, Amortized Cost Financing Receivable, Troubled Debt Restructuring, Subsequent Default Nonrecurring Fair Value, Nonrecurring [Member] Loans 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] Loans Past Due, 30 - 59 Days Financial Asset, 30 to 59 Days Past Due [Member] Loans Past Due, 60 - 89 Days Financial Asset, 60 to 89 Days Past Due [Member] Loans Past Due, over 90 Days Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Loans by aging category Loans Past Due - Accruing and Nonaccrual Financing Receivable Recorded Investment, Past Due, Accruing and Nonaccrual Financing Receivable Recorded Investment, Past Due, Accruing and Nonaccrual Current Loans Financing Receivable, Not Past Due Schedule of Fair Value, Off-balance Sheet Risks [Table] Schedule of Fair Value, Off-balance Sheet Risks [Table] Commitments to extend credit Commitments to Extend Credit [Member] Letters of credit Letter of Credit [Member] Financial instruments whose contract amounts represent credit risk: Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] Financial instruments Unused Commitments to Extend Credit Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] SBA/USDA guaranteed loans SBA USDA Guaranteed Loans [Member] SBA USDA Guaranteed Loans [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Pledged as collateral to secure contingent funding sources Loans Pledged as Collateral Loans sold Financing Receivable, Sale Net investment in leases Net Investment in Lease Carrying value of purchased credit impaired loans Unpaid principal balance of purchased credit impaired (PCI) loans Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance Gross additional interest revenue that would have been earned if the nonaccrual loans had performed as per original terms Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans TDRs Financing Receivable, Troubled Debt Restructuring Allocated allowance for TDRs Specific Reserves Allocated To Customers Whose Loan Terms Modified In Troubled Debt Restructurings This element represents specific reserves allocated to customers whose loan terms modified in troubled debt restructurings. Commitments to lend additional amounts to customers with outstanding loans classified as TDRs Financing Receivable, Troubled Debt Restructuring, Commitment to Lend Statement of Cash Flows [Abstract] Operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation, amortization and accretion Depreciation, Amortization and Accretion, Net Stock based compensation Share-based Payment Arrangement, Noncash Expense Deferred income tax expense Deferred Income Tax Expense (Benefit) Securities losses, net Realized Investment Gains (Losses) Gains from sales of other loans Gain (Loss) on Sale of Loans and Leases Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Other assets and accrued interest receivable Increase (Decrease) in Other Operating Assets Accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Loans held for sale Increase (Decrease) in Loans Held-for-sale Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Debt securities held-to-maturity: Debt Securities Held To Maturity [Abstract] Debt Securities Held To Maturity [Abstract] Proceeds from maturities and calls Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Purchases Payments to Acquire Held-to-maturity Securities Debt securities available-for-sale and equity securities: Debt Securities Available-For-Sale And Equity Securities [Abstract] Debt Securities Available-For-Sale And Equity Securities [Abstract] Proceeds from sales Proceeds from maturities and calls Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Purchases Payments to Acquire Debt Securities, Available-for-sale Net increase in loans Payments to Acquire Loans and Leases Held-for-investment Proceeds from sales of premises and equipment Proceeds from Sale of Property, Plant, and Equipment Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from sale of other real estate Proceeds from Sale of Other Real Estate Other investing activities, net Payments for (Proceeds from) Other Investing Activities Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Investing Activities Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Net increase in deposits Increase (Decrease) in Deposits Repayment of long-term debt Repayments of Other Long-term Debt Proceeds from FHLB advances Proceeds from FHLBank Borrowings, Financing Activities Repayment of FHLB advances Payments of FHLBank Borrowings, Financing Activities Proceeds from issuance of common stock for dividend reinvestment and employee benefit plans Proceeds From Issuance Of Common Stock For Dividend Reinvestment and Employee Benefit Plans Represents amount of cash inflow from the amount received from the stock plan and capital contributions to an entity associated with a dividend reinvestment plan during the period. Proceeds from exercise of stock options Proceeds from Stock Options Exercised Cash paid for shares withheld to cover payroll taxes upon vesting of restricted stock Payment, Tax Withholding, Share-based Payment Arrangement Repurchase of common stock Payments for Repurchase of Common Stock Cash dividends on common stock Payments of Ordinary Dividends, Common Stock Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net change in cash and cash equivalents, including restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and cash equivalents, including restricted cash, at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents, including restricted cash, at end of period Supplemental disclosures of cash flow information: Supplemental Cash Flow Information [Abstract] Significant non-cash investing and financing transactions: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Unsettled government guaranteed loan sales Unsettled Government Guaranteed Loan Sales Represents unsettled government guaranteed loan sale. Transfers of loans to foreclosed properties Real Estate Owned, Transfer to Real Estate Owned Unsettled repurchases of common stock Share Repurchase, Not Yet Settled Share Repurchase, Not Yet Settled Commitment for additional fund Commitment For Additional Fund Represents commitment for additional fund. Regulatory Matters Regulatory Capital Requirements under Banking Regulations [Text Block] Net Investment in Leases Net Investment in Lease [Abstract] Minimum future lease payments receivable Sales-type and Direct Financing Leases, Lease Receivable Estimated residual value of leased equipment Sales Type And Direct Financing Leases, Unguaranteed Residual Asset Sales Type And Direct Financing Leases, Unguaranteed Residual Asset Initial direct costs Sales Type And Direct Financing Leases, Initial Direct Costs Sales Type And Direct Financing Leases, Initial Direct Costs Security deposits Sales Type And Direct Financing Leases, Security Deposits Sales Type And Direct Financing Leases, Security Deposits Purchase accounting premium Sales Type And Direct Financing Leases, Purchase Accounting Premium Sales Type And Direct Financing Leases, Purchase Accounting Premium Unearned income Sales Type And Direct Financing Leases, Deferred Selling Profit Sales Type And Direct Financing Leases, Deferred Selling Profit Net investment in leases Carrying value of goodwill Goodwill Cover [Abstract] Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Reclassifications Out of Accumulated Other Comprehensive Income Disclosure of Reclassification Amount [Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Financing Receivable, Credit Quality Indicator [Line Items] 2020 Financing Receivable, Originated in Current Fiscal Year 2019 Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year 2018 Financing Receivable, Originated Two Years before Latest Fiscal Year 2017 Financing Receivable, Originated Three Years before Latest Fiscal Year 2016 Financing Receivable, Originated Four Years before Latest Fiscal Year Prior Financing Receivable, Originated Five or More Years before Latest Fiscal Year Revolvers Financing Receivable, Revolving Revolvers converted to term loans Financing Receivable, Revolving, Converted To Term Loan Financing Receivable, Revolving, Converted To Term Loan Total Subsequent Events Subsequent Events [Text Block] Assets and Liabilities Measured at Fair Value Fair Value Disclosures [Text Block] Financing Receivable, Past Due [Line Items] Nonaccrual loans with no allowance Financing Receivable, Nonaccrual, No Allowance Nonaccrual loans with an allowance Financing Receivable, Nonaccrual, With Allowance Amount of financing receivable on nonaccrual status with an allowance for credit loss. Nonaccrual loans Financing Receivable, Nonaccrual Interest expense - deposits Interest Expense [Member] Deposit interest expense Gains (losses) on fair value hedging relationships: Gain (Loss) on Fair Value Hedges Recognized in Earnings [Abstract] Amounts related to interest settlements on derivatives Gain (Loss) On Derivative Interest Settlement Gain (Loss) On Derivative Interest Settlement Recognized on derivatives Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments Recognized on hedged items Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Net income (expense) recognized on fair value hedges Gain (Loss) on Fair Value Hedges Recognized in Earnings Loans Past Due Financing Receivable, Past Due Loans Past Due Financing Receivable, 90 Days or More Past Due, Still Accruing Nonaccrual Loans Held-to-maturity securities: Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract] Gross Unrealized Gains Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain Gross Unrealized Losses Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Fair Value Schedule of major classifications of loans and lease portfolio Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of net investment in leases Schedule Of Components Of Net Investment In Lease, Sales Type And Direct Financing Leases [Table Text Block] Schedule Of Components Of Net Investment In Lease, Sales Type And Direct Financing Leases [Table Text Block] Schedule of minimum future lease payments received from lease contracts Sales-type and Direct Financing Leases, Lease Receivable, Maturity [Table Text Block] Schedule of changes in the value of the accretable yield for acquired loans accounted Schedule Of Changes In Value Of Accretable Yield For Acquired Loans [Table Text Block] Tabular disclosure of changes in value of accretable yield for acquired loans. Schedule of loans by aging category Financing Receivable, Past Due [Table Text Block] Schedule of nonaccrual loans by loan class Financing Receivable, Nonaccrual [Table Text Block] Schedule of risk category of loans by class of loans Financing Receivable Credit Quality Indicators [Table Text Block] Schedule of TDRs including the number of loan contracts restructured and the pre- and post-modification recorded investment Financing Receivable, Troubled Debt Restructuring [Table Text Block] Schedule of balance and activity in the allowance for credit losses by portfolio segment Financing Receivable, Allowance for Credit Loss [Table Text Block] Schedule of recorded investments in individually evaluated impaired loans Impaired Financing Receivables [Table Text Block] Schedule of average balances of impaired loans and income recognized on impaired loans Average Balances Of Impaired Loans and Income Recognized On Impaired Loans [Table Text Block] Average balances of impaired loans and income recognized on impaired loans. Basis of Presentation and Consolidation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Debt Securities Marketable Securities, Policy [Policy Text Block] Allowance for Credit Losses - Held-to-Maturity and Available-for-Sale Securities and Off-Balance Sheet Credit Exposures Credit Loss, Financial Instrument [Policy Text Block] Loans and Leases Financing Receivable [Policy Text Block] ACL Loans Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Accounting Standards Updates and Recently Adopted Standards New Accounting Pronouncements, Policy [Policy Text Block] Mortgage loans held for sale outstanding principal balance Mortgage Loans Held For Sale Outstanding Principal Balance Represents mortgage loans held for sale quantified by principal amount, the principle balance held at close of period. Net gains from changes in fair value of loans Fair Value, Option, Changes in Fair Value, Gain (Loss) Derivative Liability Derivative Asset Debt Securities Available-for-Sale Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Reconciliation of Assets at Level 3 Measurement Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Balance at beginning of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances Sales and settlements Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales And Settlements Amount of sale and settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Amounts included in earnings - fair value adjustments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Balance at end of period Reconciliation of Liabilities at Level 3 Measurement Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Balance at beginning of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Additions Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Sales and settlements Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales And Settlements Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales And Settlements Other comprehensive income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Amounts included in earnings - fair value adjustments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Balance at end of period Derivatives and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block]