Deposits [Abstract] Schedule Of Deposits Liabilities Schedule Of Deposits Liabilities [Table Text Block] Schedule Of Deposits Liabilities [Table Text Block] Scheduled Maturities Of Time Deposits Scheduled Maturities Of Time Deposits [Table Text Block] Scheduled Maturities Of Time Deposits [Table Text Block] Regulatory Matters [Abstract] Regulatory Matters [Abstract] Regulatory Matters Regulatory Capital Requirements under Banking Regulations [Text Block] Accumulated Other Comprehensive Income [Abstract] Accumulated Other Comprehensive Income [Abstract] Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] 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] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Measurement Basis [Axis] Fair Value, Disclosure Item Amounts [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Book Value Reported Value Measurement [Member] Estimated Fair Value Estimate of Fair Value Measurement [Member] Fair Value, Balance Sheet Grouping, FinancialStatement Captions[Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Cash and due from banks Cash and Cash Equivalents, Fair Value Disclosure Interest-bearing deposits with other banks Interest-Rate Deposits with Other Banks, Fair Value Disclosure Interest-Rate Deposits with Other Banks, Fair Value Disclosure FRB and FHLB stock Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Loans held for sale Loans Held-for-sale, Fair Value Disclosure Held to maturity investment securities Debt Securities, Held-to-maturity, Fair Value Available for sale investment securities Debt Securities, Available-for-sale Net Loans Loans, Net Of Deferred Income, Fair Value Disclosure Loans, Net Of Deferred Income, Fair Value Disclosure Other financial assets Interest Receivable, Fair Value Disclosure Interest Receivable, Fair Value Disclosure Derivative assets Other Assets, Fair Value Disclosure Demand and Savings Deposit Liabilities, Fair Value Disclosure Demand and Savings Deposit Liabilities, Fair Value Disclosure Demand and Savings Deposit Liabilities, Fair Value Disclosure Brokered Deposit Liabilities, Fair Value Disclosure Brokered Deposit Liabilities, Fair Value Disclosure Brokered Deposit Liabilities, Fair Value Disclosure Time Deposit Liabilities, Fair Value Disclosure Time Deposit Liabilities, Fair Value Disclosure Time Deposit Liabilities, Fair Value Disclosure Accrued interest payable Short-term Debt, Fair Value Other financial liabilities Accounts Payable and Accrued Liabilities, Fair Value Disclosure Other financial liabilities Other Financial Liabilites, Fair Value Disclosure Other financial liabilities – Included within this category are: Level 1 employee deferred compensation liabilities which represent amounts due to employees under the deferred compensation plans, described under the heading “Other financial assets” above and Level 2 mortgage banking derivatives, described under the heading “Other financial assets” above. FHLB advances and long-term debt (5) Federal Home Loan Bank Advances And Debt Long Term Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer. Also including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. Cash and Due from Banks [Abstract] Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Fair Value Measurements [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value by Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring Fair Value, Measurements, Recurring [Member] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Equity securities Equity Securities [Member] U.S. Government sponsored agency securities US Government-sponsored Enterprises Debt Securities [Member] State and municipal securities US States and Political Subdivisions Debt Securities [Member] Corporate debt securities Corporate Debt Securities [Member] Collateralized mortgage obligations Collateralized Mortgage Obligations [Member] Residential mortgage-backed securities Residential Mortgage Backed Securities [Member] Commercial mortgage-backed securities Commercial Mortgage Backed Securities [Member] Auction rate securities Auction Rate Securities [Member] Statement [Line Items] Statement [Line Items] Mortgage loans held for sale Mortgages Held-for-sale, Fair Value Disclosure Investments held in Rabbi Trust Assets Held-In-Trust, Fair Value Disclosure Assets Held-In-Trust, Fair Value Disclosure Total assets Assets, Fair Value Disclosure Investments held in Rabbi Trust Liabilities Held-In-Trust, Fair Value Disclosure Liabilities Held-In-Trust, Fair Value Disclosure Derivative liabilities Derivative Liability Total liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Other liabilities Other Liabilities, Fair Value Disclosure Condensed Financial Information Disclosure [Abstract] Condensed Financial Information Parent Only Condensed Financial Information Parent Only [Table Text Block] Condensed Financial Information Parent Only [Table Text Block] Schedule of Condensed Financial Statements [Table] Condensed Financial Statements [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Parent Parent Company [Member] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Bank subsidiaries Bank Subsidiary [Member] Bank Subsidiary [Member] Non-bank subsidiaries Non-bank Subsidiary [Member] Non-bank Subsidiary [Member] Condensed Financial Statements, Captions [Line Items] Condensed Financial Statements, Captions [Line Items] Dividends from subsidiaries Dividend Income From Subsidiaries Dividend Income From Subsidiaries Other (1) Other Income Total Non-Interest Income Noninterest Income Expenses Operating Expenses Income Before Income Taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax benefit Income Tax Expense (Benefit) Income before equity in undistributed income of subsidiaries Income (Loss) Attributable To Parent, Before Equity Method Investments, Net of Tax Income (Loss) Attributable To Parent, Before Equity Method Investments, Net of Tax Non-bank subsidiaries Income (Loss) from Equity Method Investments Net Income Net Income (Loss) Attributable to Parent Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-based compensation plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Accounting Policies [Abstract] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Leases [Abstract] Schedule of Future Minimum Rental Payments for Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Reserve for Off-balance Sheet Activities SEC Schedule, 12-09, Reserve, Off-balance Sheet Activity [Member] Residential Mortgage Residential Mortgage [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Valuation allowances and reserves SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Condensed Financial Statements - Parent Company Only Condensed Financial Information of Parent Company Only Disclosure [Text Block] Receivables [Abstract] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Pass Pass [Member] Special Mention Special Mention [Member] Substandard or Lower Substandard [Member] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Commercial – industrial, financial and agricultural Commercial Portfolio Segment [Member] Real estate – commercial mortgage Commercial Real Estate Portfolio Segment [Member] Commercial - secured Commercial - Secured [Member] Commercial - Secured [Member] Commercial - unsecured Commercial - Unsecured [Member] Commercial - Unsecured [Member] Construction - commercial residential Construction - Commercial Residential [Member] Construction - Commercial Residential [Member] Construction - commercial Construction - Commercial [Member] Construction - Commercial [Member] Total construction (excluding construction - other) Construction - Commercial and Commercial Residential [Member] Construction - Commercial and Commercial Residential [Member] Commercial Loans, Commerical Mortgages, Constructions Loans Commercial Loans, Commerical Mortgages, Constructions Loans [Member] Commercial Loans, Commerical Mortgages, Constructions Loans [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Recorded Investment [Line Items] Carrying Amount Loans and Leases Receivable, Gross % of Total Percentage Of Risk Rated Loans By Total Risk Rated Loans Percentage Of Risk Rated Loans By Total Risk Rated Loans Derivative Instruments and Hedging Activities Disclosure [Abstract] Summary of Notion Amoutns and Fair Values of Derivative Financial Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Summary of Fair Value Gains and Losses on Derivative Financial Instruments Derivative Instruments, Gain (Loss) [Table Text Block] Fair Value, Option, Qualitative Disclosures Related to Election Fair Value Option, Disclosures [Table Text Block] Offsetting Assets and Liabilities Offsetting Assets and Liabilities [Table Text Block] Offsetting Assets and Liabilities [Table Text Block] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Real estate – residential mortgage Residential Portfolio Segment [Member] Real estate – home equity Home Equity Line of Credit [Member] Construction - other Construction other [Member] Construction other [Member] Consumer - direct Consumer - Direct [Member] Consumer - Direct [Member] Consumer - indirect: Consumer - Indirect [Member] Consumer - Indirect [Member] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Axis] Loan Restructuring Modification [Domain] Loan Restructuring Modification [Domain] Extend maturity with rate concession Extended Maturity With Rate Concession [Member] Extended Maturity With Rate Concession [Member] Extend maturity without rate concession Extended Maturity Without Rate Concession [Member] Extended Maturity Without Rate Concession [Member] Bankruptcy Bankruptcy [Member] Bankruptcy [Member] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Number of loans modified during the year (loans) Financing Receivable, Modifications, Number of Contracts Post-Modification Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment Number of Loans, modified during the year that had a post-modification default Financing Receivable, Modifications, Subsequent Default, Number of Contracts Recorded Investment, modified during the year that had a post-modification default Financing Receivable, Modifications, Subsequent Default, Recorded Investment Deposits Deposit Liabilities Disclosures [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Restricted Stock/RSUs/PSUs(1) Restricted Stock [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Options Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Nonvested as of December 31, 2017 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Nonvested as of December 31, 2018 Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Weighted Average Grant Date Fair Value [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Weighted Average Grant Date Fair Value [Roll Forward] Nonvested as of December 31, 2013 (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (usd 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 (usd 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 Forfeited (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Nonvested as of December 31, 2014 (usd per share) Short-Term Borrowings and Long-Term Debt [Abstract] Short-Term Borrowings and Long-Term Debt [Abstract] 2019 Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 2020 Long-term Debt, Maturities, Repayments of Principal in Year Two 2021 Long-term Debt, Maturities, Repayments of Principal in Year Three 2022 Long-term Debt, Maturities, Repayments of Principal in Year Four 2023 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Long Term Debt Maturities Total Long Term Debt Maturities Total Long Term Debt Maturities Total Income Tax Disclosure [Abstract] Affordable housing tax credit investments, net Amortization Method Qualified Affordable Housing Project Investments Other tax credit investments, net Other Tax Credit Investments Other Tax Credit Investments Total tax credit investments, net Amortization Method Qualified Affordable Housing Project Investments And Other Tax Credit Investments Amortization Method Qualified Affordable Housing Project Investments And Other Tax Credit Investments Other tax credit liabilities Qualified Affordable Housing Project Investments, Commitment Other tax credit liabilities Other Tax Credit Liabilities Other Tax Credit Liabilities Total unfunded tax credit commitments and liabilities Qualified Affordable Housing Project Investments, Commitment And Other Tax Credit Liabilities Qualified Affordable Housing Project Investments, Commitment And Other Tax Credit Liabilities Affordable housing tax credits and other tax benefits Affordable Housing Tax Credits and Other Tax Benefits, Amount Other tax credit investment credits and tax benefits Other Tax Credit Investment Credits Benefits, Amount Other Tax Credit Investment Credits Benefits, Amount Amortization of affordable housing investments, net of tax benefit Amortization Method Qualified Affordable Housing Project Investments, Amortization Deferred tax expense Tax Credit Investments, Deferred Income Tax Expense (Benefit) Tax Credit Investments, Deferred Income Tax Expense (Benefit) Total reduction in income tax expense Tax Credit Investments, Decrease In Income Tax Expense Tax Credit Investments, Decrease In Income Tax Expense Affordable housing tax credits investment Affordable Housing Tax Credits, Amortization Expense Affordable Housing Tax Credits, Amortization Expense Other tax credit investment amortization Other Tax Credit Investment, Amortization Expense Other Tax Credit Investment, Amortization Expense Total amortization of tax credit investments recorded in non-interest expense Tax Credit Investments, Amortization Expense Tax Credit Investments, Amortization Expense Retirement Benefits [Abstract] Schedule of Deferred Compensation Arrangement With Individual [Table] Schedule of Deferred Compensation Arrangement with Individual, Share-based Payments [Table] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Other Postretirement Benefit Plan Other Postretirement Benefits Plan [Member] Pension Plan Pension Plan [Member] Retirement Plan Name [Axis] Retirement Plan Name [Axis] Retirement Plan Name [Domain] Retirement Plan Name [Domain] 401k Plan 401k Plan [Member] 401k Plan [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] 401(k) Retirement Plan Defined Contribution Plan, Cost Pension Plan Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Retirement plan and pension plan, total Defined Benefit Plan, Net Periodic Benefit Cost and Defined Contribution Plan Cost Recognized, Total Defined Benefit Plan, Net Periodic Benefit Cost and Defined Contribution Plan Cost Recognized, Total Maximum percentage of eligible employee’s covered compensation Defined Contribution Plan Employer Contributions Maximum Percentage Of Eligible Employees Covered Compensation Defined Contribution Plan Employer Contributions Maximum Percentage Of Eligible Employees Covered Compensation Percentage of plan vested Defined Contribution Plans Percentage Of Plan Vested Defined Contribution Plans Percentage Of Plan Vested Amount to be amortized from accumulated other comprehensive income (loss) in next twelve months Defined Benefit Plan, Expected Amortization, Next Fiscal Year Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Pension Plans Other Postretirement Benefit Plans Service cost (1) Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Net amortization and deferral Defined Benefit Plan, Amortization of Gain (Loss) Net periodic benefit cost Investments, Debt and Equity Securities [Abstract] Debt Securities, Held-to-maturity [Table] Debt Securities, Held-to-maturity [Table] Pooled trust preferred securities Pooled Trust Preferred Securities [Member] Pooled trust preferred securities [Member] Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-maturity Securities [Line Items] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Balance of cumulative credit losses on debt securities, beginning of year Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Balance of cumulative credit losses on debt securities, end of year Statement of Financial Position [Abstract] Common stock, par value (usd per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Treasury stock, shares Treasury Stock, Shares Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Legal Entity [Axis] Entity [Domain] Fulton Bank, N.A. Fulton Bank, N.A. [Member] Fulton Bank, N.A. [Member] Fulton Bank of New Jersey The Bank [Member] The Bank [Member] The Columbia Bank Columbia Bank [Member] Columbia Bank [Member] Lafayette Ambassador Bank Lafeyette Abassador Bank [Member] Lafeyette Abassador Bank [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Amount available for dividend distribution without affecting capital adequacy requirements Amount Available for Dividend Distribution without Affecting Capital Adequacy Requirements Maximum allowed percentage of loans issued to a single affiliate Maximum Allowed Percentage Of Loans Issued To A Single Affiliate Maximum Allowed Percentage Of Loans Issued To A Single Affiliate Maximum allowed percentage of aggregate loans issued to all affiliate Maximum Allowed Percentage Of Aggregate Loans Issued To All Affiliate Maximum Allowed Percentage Of Aggregate Loans Issued To All Affiliate Excess tier one risk based capital Compliance With Regulatory Capital Requirements Under Banking Regulations In Excess Of Threshold Amount Compliance With Regulatory Capital Requirements Under Banking Regulations In Excess Of Threshold Amount Total Capital [Abstract] Capital [Abstract] Capital Capital Capital to risk weighted assets Capital to Risk Weighted Assets Capital required for capital adequacy Capital Required for Capital Adequacy Capital required for capital adequacy to risk weighted assets Capital Required for Capital Adequacy to Risk Weighted Assets Capital required to be well capitalized Capital Required to be Well Capitalized Capital required to be well capitalized to risk weighted assets Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Risk Based Capital [Abstract] Tier one risk based capital Tier One Risk Based Capital Tier one risk based capital to risk weighted assets Tier One Risk Based Capital to Risk Weighted Assets Tier one risk based capital required for capital adequacy Tier One Risk Based Capital Required for Capital Adequacy Tier one risk based capital required for capital adequacy to risk weighted assets Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Tier one risk based capital required to be well capitalized Tier One Risk Based Capital Required to be Well Capitalized Tier one risk based capital required to be well capitalized to risk weighted assets Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets CommonEquityTierOneCapitalAbstract [Abstract] CommonEquityTierOneCapitalAbstract [Abstract] CommonEquityTierOneCapitalAbstract [Abstract] Common equity tier 1 capital Common Equity Tier One Capital Common equity tier one capital ratio Common Equity Tier One Capital Ratio Common equity tier one capital required for capital adequacy Common Equity Tier One Capital Required for Capital Adequacy 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 One Capital Required for Capital Adequacy to Risk Weighted Assets Common equity tier one capital required to be well-capitalized Common Equity Tier One Capital Required to be Well-Capitalized Common equity tier one capital required to be well capitalized to risk weighted assets Common Equity Tier One Capital Required to be Well Capitalized to Risk Weighted Assets Common Equity Tier One Capital Required to be Well Capitalized to Risk Weighted Assets Tier One Leverage Capital [Abstract] Tier One Leverage Capital [Abstract] Tier one leverage capital Tier One Leverage Capital Tier one leverage capital to average assets Tier One Leverage Capital to Average Assets Tier one leverage capital required for capital adequacy Tier One Leverage Capital Required for Capital Adequacy Tier one leverage capital required for capital adequacy to average assets Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier one leverage capital required to be well capitalized Tier One Leverage Capital Required to be Well Capitalized Tier one leverage capital required to be well capitalized to average assets Tier One Leverage Capital Required to be Well Capitalized to Average Assets Schedule of Investments [Table] Schedule of Investments [Table] State and municipal securities Municipal Bonds [Member] Debt securities Debt Securities [Member] Statement [Line Items] Schedule of Investments [Line Items] Number of Securities, Less Than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions Estimated Fair Value, Less Than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months Unrealized Losses, Less Than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Number of Securities, 12 Months or Longer Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Estimated Fair Value, 12 Months or Longer Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Unrealized Losses, 12 Months or Longer Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Estimated Fair Value, Total Debt Securities, Available-for-sale, Unrealized Loss Position Unrealized Losses, Total Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Number of Securities, Less Than 12 Months Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions Estimated Fair Value, Less Than 12 Months Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value Unrealized Losses, Less Than 12 Months Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Number of Securities, 12 Months or Longer Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions Estimated Fair Value, 12 Months or Longer Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value Unrealized Losses, 12 Months or Longer Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Estimated Fair Value, Total Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value Unrealized Losses, Total Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss Estimated Fair Value, Less Than 12 Months Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Unrealized Losses, Less than 12 Months Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Estimated Fair Value, 12 Months or Longer Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Unrealized Losses, 12 Months or Longer Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Estimated Fair Value, Total Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Unrealized Losses, Total Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Before-Tax Amount Other Comprehensive Income (Loss), before Tax [Abstract] Unrealized loss on available for sale securities Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax Reclassification adjustment for securities gains included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Amortization of net unrealized losses on available for sale securities transferred to held to maturity Other Comprehensive Income (Loss), Transfers From Available-For-Sale To Held-To-Maturity Securities, Before Tax Other Comprehensive Income (Loss), Transfers From Available-For-Sale To Held-To-Maturity Securities, Before Tax Non-credit related unrealized loss on other-than-temporarily impaired debt securities Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, before Tax, Including Portion Attributable to Noncontrolling Interest Amortization of unrealized loss on derivative financial instruments Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Unrecognized pension and postretirement income Other comprehensive income, pension and other postretirement benefit plans, net unamortized gain (loss) arising during period, before tax Other comprehensive income, pension and other postretirement benefit plans, net unamortized gain (loss) arising during period, before tax Amortization of net unrecognized pension and postretirement income Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax Total Other Comprehensive Loss Other Comprehensive Income (Loss), before Tax Tax Effect Other Comprehensive Income (Loss), Tax [Abstract] Unrealized loss on available for sale securities Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax Reclassification adjustment for securities gains included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Amortization of net unrealized losses on available for sale securities transferred to held to maturity Other Comprehensive Income (Loss), Transfers From Available-For-Sale To Held-To-Maturity Securities, Tax Other Comprehensive Income (Loss), Transfers From Available-For-Sale To Held-To-Maturity Securities, Tax Non-credit related unrealized loss on other-than-temporarily impaired debt securities Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, Tax, Portion Attributable to Parent Amortization of unrealized loss on derivative financial instruments Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Unrecognized pension and postretirement income Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax Amortization of net unrecognized pension and postretirement income Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, Tax Total Other Comprehensive Loss Other Comprehensive Income (Loss), Tax Net of Tax Amount Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized loss on available for sale securities Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Reclassification adjustment for securities gains included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Non-credit related unrealized loss on other-than-temporarily impaired debt securities Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, Net of Tax, Portion Attributable to Parent Amortization of net unrealized losses on available for sale securities transferred to held to maturity Other Comprehensive Income (Loss), Transfers From Available-For-Sale To Held-To-Maturity Securities, Net Of Tax Other Comprehensive Income (Loss), Transfers From Available-For-Sale To Held-To-Maturity Securities, Net Of Tax Amortization of unrealized loss on derivative financial instruments Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Unrecognized pension and postretirement income Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Amortization of net unrecognized pension and postretirement income Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax Total Other Comprehensive Loss Other Comprehensive Income (Loss), Net of Tax Income Statement [Abstract] Statement [Table] Statement [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Other service charges and fees Financial Service, Other [Member] Service charges on deposit accounts Deposit Account [Member] Investment management and trust services Fiduciary and Trust [Member] Mortgage banking income Mortgage Banking [Member] Other Service, Other [Member] Interest Income Interest and Dividend Income, Operating [Abstract] Loans, including fees Interest and Fee Income, Loans and Leases Investment securities: Interest and Dividend Income, Securities, by Taxable Status [Abstract] Taxable Interest Income, Securities, Operating, Taxable Tax-exempt Interest Income, Securities, Operating, Tax Exempt Dividends Dividend Income, Operating Loans held for sale Interest and Fee Income, Loans and Leases Held-for-sale Other interest income Other Interest and Dividend Income Total Interest Income Interest and Dividend Income, Operating Interest Expense Interest Expense [Abstract] Deposits Interest Expense, Deposits Short-term borrowings Interest Expense, Short-term Borrowings Long-term debt Interest Expense, Long-term Debt Total Interest Expense Interest Expense Net Interest Income Interest Income (Expense), Net Provision for credit losses Provision for Loan and Lease Losses Net Interest Income After Provision for Credit Losses Interest Income (Expense), after Provision for Loan Loss Non-Interest Income Noninterest Income [Abstract] Revenue from Contract with Customer, Including Assessed Tax Revenue from Contract with Customer, Including Assessed Tax Investment securities gains, net Net Securities Gain Loss This item represents the total realized gain (loss) included in earnings for the period as a result of selling marketable securities categorized as available-for-sale or held-to-maturity. Additionally, this item would include any losses recognized for other than temporary impairments of the subject investments in debt and equity securities. Non-Interest Expense Noninterest Expense [Abstract] Salaries and employee benefits Labor and Related Expense Net occupancy expense Occupancy, Net Other outside services Other outside services Includes consulting services, employment agency fees and other contracted third-party services. Equipment expense Information Technology and Data Processing Amortization of tax credit investments Amortization Of Tax Credit Investments Amortization Of Tax Credit Investments Marketing Equipment Expense Loss on redemption of trust preferred securities Professional Fees FDIC insurance expense Federal Deposit Insurance Corporation Premium Expense State taxes Taxes, Other Other Noninterest Expense Other Noninterest Expense Total Non-Interest Expense Noninterest Expense Income taxes Net Income Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest PER COMMON SHARE: PER COMMON SHARE Per Common Share [Abstract] Net Income (Basic) (usd per share) Earnings Per Share, Basic Net Income (Diluted) (usd per share) Earnings Per Share, Diluted Cash Dividends (usd per share) Common Stock, Dividends, Per Share, Declared Schedule Of Debentures [Table] Schedule Of Debentures [Table] Schedule Of Debentures [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior Notes Senior Notes [Member] Junior subordinated deferrable interest debentures Junior Subordinated Debt [Member] Subordinated debt Subordinated Debt [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] May 2017 Subordinated Debt May 2017 Subordinated Debt [Member] May 2017 Subordinated Debt [Member] November 2024 Subordinated Debt November 2024 Subordinated Debt [Member] November 2024 Subordinated Debt [Member] Subordinated Borrowing [Axis] Subordinated Borrowing [Axis] Subordinated Borrowing, Name [Domain] Subordinated Borrowing, Name [Domain] Columbia Bancorp Statutory Trust Columbia Bancorp Statutory Trust [Member] Columbia Bancorp Statutory Trust [Member] Columbia Bancorp Statutory Trust II Columbia Bancorp Statutory Trust II [Member] Columbia Bancorp Statutory Trust II [Member] Columbia Bancorp Statutory Trust III Columbia Bancorp Statutory Trust III [Member] Columbia Bancorp Statutory Trust III [Member] Extinguishment of Debt [Axis] Extinguishment of Debt [Axis] Extinguishment of Debt, Type [Domain] Extinguishment of Debt, Type [Domain] Subordinated Borrowing [Line Items] Subordinated Borrowing [Line Items] Subordinated Debt [Abstract] Subordinated Debt [Abstract] Debt instrument, face amount Debt Instrument, Face Amount Debt instrument, term Debt Instrument, Term Interest Rate Subordinated Borrowing, Interest Rate Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Subordinated Debt Subordinated Debt Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Subsidiary trusts owned by parent Number Of Subsidiary Trusts Owned By Parent Number Of Subsidiary Trusts Owned By Parent Call Price Subordinated Borrowing Callable Price Subordinated Borrowing Callable Price Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization of premises and equipment Depreciation, Depletion and Amortization, Nonproduction Accretion (Amortization) Of Discounts And Premiums, Tax Credit Investments Accretion (Amortization) Of Discounts And Premiums, Tax Credit Investments Accretion (Amortization) Of Discounts And Premiums, Tax Credit Investments Net amortization of investment security premiums Accretion (Amortization) of Discounts and Premiums, Investments Deferred income tax (benefit) expense Deferred Income Taxes and Tax Credits Re-measurement of net deferred tax asset Tax Cuts And Jobs Act, Incomplete Accounting, Change In Tax Rate, Provisional Income Tax Expense (Benefit) Tax Cuts And Jobs Act, Incomplete Accounting, Change In Tax Rate, Provisional Income Tax Expense (Benefit) Investment securities gains, net Gain (Loss) on Investments Gains on sales of mortgage loans held for sale Gain (Loss) on Sale of Mortgage Loans Proceeds from sales of mortgage loans held for sale Proceeds from Sale of Mortgage Loans Held-for-sale Originations of mortgage loans held for sale Payments to Purchase Mortgage Loans Held-for-sale Amortization of financing costs Amortization of Debt Issuance Costs Stock-based compensation Allocated Share-based Compensation Expense Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Increase in accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Increase in other assets Increase (Decrease) in Other Operating Assets Increase (decrease) in accrued interest payable Increase (Decrease) in Interest Payable, Net (Decrease) increase in other liabilities Increase (Decrease) in Other Operating Liabilities Total adjustments Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities 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 [Abstract] Proceeds from sales of securities available for sale Proceeds from Sale of Debt Securities, Available-for-sale Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities Proceeds from principal repayments and maturities of available for sale securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Purchase of securities available for sale Payments to Acquire Debt Securities, Available-for-sale (Purchase) redemption of Federal Reserve Bank and Federal Home Loan Bank stock Payments for (Proceeds from) Federal Reserve Bank Stock Net increase in loans Payments for (Proceeds from) Loans and Leases Net purchases of premises and equipment Payments for (Proceeds from) Productive Assets Increase (Decrease) In Tax Credit Investments Increase (Decrease) In Tax Credit Investments Increase (Decrease) In Tax Credit Investments Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Net increase in demand and savings deposits Increase (Decrease) in Demand Deposits Net increase (decrease) in time deposits Increase (Decrease) in Time Deposits Increase in short-term borrowings Proceeds from (Repayments of) Short-term Debt Additions to long-term debt Proceeds from Issuance of Long-term Debt Repayments of long-term debt Repayments of Long-term Debt Net proceeds from issuance of common stock Proceeds from Issuance of Common Stock Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Dividends paid Payments of Dividends Acquisition of treasury stock Payments for Repurchase of Common Stock 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 at Beginning of Year Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and Cash Equivalents at End of Year Supplemental Disclosures of Cash Flow Information Supplemental Cash Flow Information [Abstract] Cash paid during period for: Cash Paid During Period For Abstract Cash Paid During Period For [Abstract] Interest Interest Paid, Excluding Capitalized Interest, Operating Activities Income taxes Income Taxes Paid Supplemental schedule of certain noncash activities Noncash Investing and Financing Items [Abstract] Transfer of available for sale securities to held to maturity securities Debt Securities, Held-to-maturity, Transfer, Amount Reconciliation of Unrecognized Tax Benefits [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Balance at beginning of year Unrecognized Tax Benefits Current period tax positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Lapse of statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Balance at end of year Unrecognized tax benefits that would impact effective tax rate Unrecognized Tax Benefits If All Unrecognized State Tax Positions Were Recognized Federal tax expense on unrecognized state tax benefits that would impact the effective tax rate if the associated unrecognized state tax benefits were recognized. Interest and penalties in income tax expense related to unrecognized tax positions Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Income tax penalties and interest accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Discount rate-projected benefit obligation Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Expected long-term rate of return on plan assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets Percentage of Increase threshold using citigroup average life discount rate table Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Percentage Of Increase Threshold Using Citigroup Average Life Discount Rate Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Percentage of increase threshold using Fair Value Option Disclosures [Abstract] Fair Value Option Disclosures [Abstract] Fair Value Option, Disclosures [Table] Fair Value Option, Disclosures [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Mortgage loans held for sale Mortgage Loans Held For Sale [Member] Mortgage Loans Held For Sale [Member] Fair Value Option By Income Statement Location [Axis] Fair Value Option By Income Statement Location [Axis] Fair Value Option By Income Statement Location [Axis] Location [Domain] Location [Domain] Mortgage Banking Income Mortgage Banking Income [Member] Mortgage Banking Income [Member] Fair Value, Option, Quantitative Disclosures [Line Items] Fair Value, Option, Quantitative Disclosures [Line Items] Cost Contractual Principal Outstanding Mortgage Loand Held For Sale Contractual Principal Outstanding Mortgage Loand Held For Sale Fair Value Fair Value Gain Fair Value, Option, Changes in Fair Value, Gain (Loss) Summary of Gross Loans by Type Schedule Of Gross Loans [Table Text Block] Schedule Of Gross Loans [Text Block] Schedule of Allowance for Credit Losses Schedule of Allowance for Credit Losses [Table Text Block] Schedule of the components of the allowance for credit losses as of the balance sheet date. Activity in the Allowance for Credit Losses Allowance for Credit Losses on Financing Receivables [Table Text Block] Total Impaired Loans by Class Segment Impaired Financing Receivables [Table Text Block] Financing Receivable Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Non-Performing Assets Schedule of Non Performing Assets [Table Text Block] Schedule of Non Performing Assets [Text Block] Past due Loan Status and Non-Accrual Loans by Portfolio Segment Past Due Financing Receivables [Table Text Block] Troubled Debt Restructurings on Financing Receivables Troubled Debt Restructurings on Financing Receivables [Table Text Block] Loan Terms Modified Under Troubled Debt Restructurings during The Period By Class Segment Schedule of Loans Modified Under Troubled Debt Restructurings [Table Text Block] Schedule of Loans Modified Under Troubled Debt Restructurings [Text Block] Schedule Of TDRs Modified Last 12 Months Which Had Payment Default In 2014 Schedule Of TDRs Modified Last 12 Months Which Had Payment Default [Table Text Block] Schedule Of TDRs Modified Last 12 Months Which Had Payment Default [Table Text Block] Loans and Allowance for Credit Losses Loans, Notes, Trade and Other Receivables Disclosure [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 Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock Options Employee Stock Option [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Weighted average common shares outstanding (basic) Weighted Average Number of Shares Outstanding, Basic Impact of common stock equivalents Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted average common shares outstanding (diluted) Weighted Average Number of Shares Outstanding, Diluted Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Performing Performing Financial Instruments [Member] Delinquent Delinquent [Member] Delinquent [Member] Nonperforming Nonperforming Financial Instruments [Member] Consumer Consumer Portfolio Segment [Member] Leasing and other and overdrafts Leasing and Other and Overdrafts [Member] Leasing and Other and Overdrafts [Member] Real Estate, Consumer, Leasing and Other Loans Real Estate, Consumer, Leasing And Other Loans [Member] [Member] Real Estate, Consumer, Leasing And Other Loans [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Loans, net of unearned income Loans and Leases Receivable, Net of Deferred Income Ratio of nonperforming loans to all loans Loans And Leases Receivable Percentage Of Loans Within Delinquecy Category By Total Non Risk Rated Loans Percentage of loans within delinquency category by total non-risk rated loans Days outstanding Financing Receivable, Recorded Investment, Days Outstanding Financing Receivable, Recorded Investment, Days Outstanding Period for which change in loans evaluated individually for impairment Period for Which Change in Loans Evaluated Individually For Impairment Represents the number of days delinquent under its modified terms that a troubled debt restructuring would need to be in order to meet the definition of impairment. Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Subsidiaries Subsidiaries [Member] Business Segments [Axis] Segments [Axis] Segment [Domain] Segments [Domain] Five Reporting Units Five Reporting Units [Member] Five Reporting Units [Member] Goodwill [Line Items] Goodwill [Line Items] Goodwill Goodwill Indefinite-lived Intangible Assets (Excluding Goodwill) Indefinite-lived Intangible Assets (Excluding Goodwill) Goodwill impairment charges Goodwill, Impairment Loss Goodwill impairment test fair value exceeding adjusted net book value Goodwill Impairment Test Fair Value Exceeding Adjusted Net Book Value Percent Goodwill Impairment Test Fair Value Exceeding Adjusted Net Book Value Percent - Weighted Avergage Goodwill Impairment Test Fair Value Exceeding Adjusted Net Book Value Percent for All Reporting Units That Passed Step 1 Impairment Test By Greater Than 5% Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive (Loss) Income AOCI Attributable to Parent [Member] Treasury Stock Treasury Stock [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning Balance Stockholders' Equity Attributable to Parent Beginning Balance (in shares) Shares, Outstanding Other comprehensive loss Stock issued, including related tax benefits Stock Issued During Period, Value, New Issues Stock issued, including related tax benefits (in shares) Stock Issued During Period, Shares, New Issues Stock-based compensation awards (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Stock-based compensation awards Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Acquisition of treasury stock Treasury Stock, Value, Acquired, Cost Method Reclassification of stranded tax effects Tax Cuts And Jobs Act, Reclassification From AOCI To Retained Earnings, Tax Effect Tax Cuts And Jobs Act, Reclassification From AOCI To Retained Earnings, Tax Effect Acquisition of treasury stock (in shares) Treasury Stock, Shares, Acquired Common stock cash dividends Dividends, Common Stock, Cash Ending Balance Ending Balance (in shares) Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Real estate – construction Construction Loans [Member] Consumer Finance Leases Portfolio Segment [Member] Overdrafts Bank Overdrafts [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Loans before unearned income Unearned income Loans and Leases Receivable, Deferred Income Loans, net of unearned income Loans and leases receivable, related parties Loans and Leases Receivable, Related Parties Proceeds from related party debt Loans and Leases Receivable, Related Parties, Additions Repayments of related party debt Loans and Leases Receivable, Related Parties, Proceeds Loans serviced by unrelated third party Mortgage Loans Serviced By For Third Parties Mortgage loans serviced by the Corporation for unrelated third parties Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Summary of Income Tax Contingencies Summary of Income Tax Contingencies [Table Text Block] Summary of Affordable Housing Tax Credit Investments And Other Credit Investments Summary Of Affordable Housing Tax Credit Investments And Other Credit Investments [Table Text Block] Summary Of Affordable Housing Tax Credit Investments And Other Credit Investments [Table Text Block] Short-Term Borrowings and Long-Term Debt Debt Disclosure [Text Block] Effective Income Tax Rate Reconciliation, Percent [Abstract] Statutory tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Tax-exempt income Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Tax credit investments Effective Income Tax Rate Reconciliation Low Income Housing Investments Effective Income Tax Rate Reconciliation Low Income Housing Investments Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Bank owned life insurance Effective Income Tax Rate Reconciliation Bank Owned Life Insurance Effective Income Tax Rate Reconciliation Bank Owned Life Insurance Re-measurement of net deferred tax asset due to the Tax Act Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent State income taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Executive compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent Other, net Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Summary of Outstanding Commitments to Extend Credit and Letters of Credit Summary Of Outstanding Commitments To Extend Credit And Letters Of Credit [Table Text Block] Summary Of Outstanding Commitments To Extend Credit And Letters Of Credit [Table Text Block] Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Unallocated Unallocated Financing Receivables [Member] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Loans and Leases Receivable, Allowance, Beginning Balance Loans and Leases Receivable, Allowance Loans charged off Allowance for Loan and Lease Losses, Write-offs Recoveries of loans previously charged off Allowance for Loan and Lease Loss, Recovery of Bad Debts Loans Charged Off, Net Of Recoveries Loans Charged Off, Net Of Recoveries Reflects the increase in the allowance account attributable to collections of loans and lease receivables which had previously been fully or partially charged off as bad debts. Provision for loan losses Allowance for loan and lease losses, provision for loss, net of provision applied to unfunded commitments Allowance for loan and lease losses, provision for loss, net of provision applied to unfunded commitments. Financing receivable, allowance for credit losses, collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Financing receivable, allowance for credit losses, individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Loans and Leases Receivable, Allowance, Ending Balance Measured for impairment under FASB ASC Subtopic 450-20 Financing Receivable, Collectively Evaluated for Impairment Evaluated for impairment under FASB ASC Section 310-10-35 Financing Receivable, Individually Evaluated for Impairment Change in provision allocated to commitments to lend to borrowers Provision for loan losses gross Represents the change in allocation needs for commitments to lend to borrowers. Provision for credit losses Transfers and Servicing [Abstract] Summary of Changes in Mortgage Servicing Rights Servicing Asset at Amortized Cost [Table Text Block] Schedule Of Servicing Assets Expected Amortization Expense Schedule Of Servicing Assets Expected Amortization Expense [Table Text Block] Schedule Of Servicing Assets Expected Amortization Expense [Table Text Block] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Employee Option Plan [Member] Employee Option Plan [Member] Employee Option Plan [Member] Directors' Plan [Member] Directors' Plan [Member] Directors Plan [Member] Weighted average grant date fair value, options granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Shares reserved for future grants under the stock option and compensation plan Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options Expected life of options Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Percentage of fair value at purchase date Share Based Compensation Arrangement By Share Based Payment Award Percentage Of Fair Value At Purchase Date Share Based Compensation Arrangement By Share Based Payment Award Percentage Of Fair Value At Purchase Date Discount from market price, purchase date Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date Income Taxes Income Tax Disclosure [Text Block] Assets [Abstract] Cash Cash and Cash Equivalents, at Carrying Value Other assets Other Assets Receivable from subsidiaries Due from Affiliates Investments in: Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract] Bank subsidiaries Investments In Affiliates Banking Subsidiaries Investments In Affiliates Banking Subsidiaries Non-bank subsidiaries Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Total Assets Assets Long-term debt Long-term Debt Payable to non-bank subsidiaries Due to Affiliate Other liabilities Other Liabilities Total Liabilities Liabilities Shareholders' Equity [Abstract] Equity [Abstract] Shareholders’ equity Total Liabilities and Shareholders’ Equity Liabilities and Equity Schedule of Investments [Table] Schedule of Gain (Loss) on Securities [Table] Equity Securities, FV-NI, Realized Gain Equity Securities, FV-NI, Realized Gain Debt and Equity Securities, Realized Gain (Loss) Debt and Equity Securities, Realized Gain (Loss) Debt Securities, Available-for-sale, Realized Gain (Loss) Debt Securities, Available-for-sale, Realized Gain (Loss) Debt And Equity Securities, Realized Gain Debt And Equity Securities, Realized Gain Debt And Equity Securities, Realized Gain Equity Securities, FV-NI, Realized Gain (Loss) Equity Securities, FV-NI, Realized Gain (Loss) Debt Securities, Available-for-sale, Realized Gain Debt Securities, Available-for-sale, Realized Gain Equity Securities, FV-NI, Realized Loss Equity Securities, FV-NI, Realized Loss Debt Securities, Available-for-sale, Realized Loss Debt Securities, Available-for-sale, Realized Loss Debt And Equity Securities, Realized Loss Debt And Equity Securities, Realized Loss Debt And Equity Securities, Realized Loss Offsetting [Abstract] Offsetting Assets and Liabilities [Table] Offsetting Assets and Liabilities [Table] Offsetting Assets and Liabilities [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest Rate Swap Interest Rate Swap [Member] Foreign Exchange Contract Foreign Exchange Contract [Member] Offsetting Assets and Liabilities [Line Items] Offsetting Assets and Liabilities [Line Items] [Line Items] for Offsetting Assets and Liabilities [Table] Gross asset Derivative Asset Financial Instruments Derivative, Collateral, Obligation to Return Securities Cash collateral Derivative, Collateral, Obligation to Return Cash Net asset Derivative Asset, Fair Value, Amount Offset Against Collateral Financial Instruments Derivative, Collateral, Right to Reclaim Securities Cash Collateral Derivative, Collateral, Right to Reclaim Cash Net liability Derivative Liability, Fair Value, Amount Offset Against Collateral Business and Basis of Financial Statement Presentation Description of Business and Basis of Presentation [Policy Text Block] Description of Business and Basis of Presentation [Policy Text Block] Federal Reserve Bank and Federal Home Loan Bank (FHLB) Stock Restricted Assets Disclosure [Text Block] Investments Investment, Policy [Policy Text Block] Loans and Revenue Recognition Loans And Revenue Recognition [Policy Text Block] Loans And Revenue Recognition [Policy Text Block] Loan Origination Fees and Costs Loans and Leases Receivable, Origination Fees, Discounts or Premiums, and Direct Costs to Acquire Loans Policy [Policy Text Block] Troubled Debt Restructurings (TDRs) Loans and Leases Receivable, Troubled Debt Restructuring Policy [Policy Text Block] Allowance for Credit Losses Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Premises and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Other Real Estate Owned Loans and Leases Receivable, Real Estate Acquired Through Foreclosure, Policy [Policy Text Block] Mortgage Servicing Rights Loans and Leases Receivable, Mortgage Banking Activities, Policy [Policy Text Block] Derivative Financial Instruments Derivatives, Policy [Policy Text Block] Balance Sheet Offsetting Derivatives, Offsetting Fair Value Amounts, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Stock-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Net Income Per Share Earnings Per Share, Policy [Policy Text Block] Disclosures about Segments of an Enterprise and Related Information Segment Reporting, Policy [Policy Text Block] Financial Guarantees Financial Guarantees [Policy Text Block] Disclosure of the accounting policy for recognizing financial guarantees at their fair value Business Combinations and Intangible Assets Business Combinations and Intangible Assets [Policy Text Block] Disclosure of the accounting policies for recording and measuring goodwill and intangible assets upon acquisition and how these items are measuring for impairment Variable Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Fair Value Measurements Fair Value of Financial Instruments, Policy [Policy Text Block] New Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Reclassification Reclassification, Policy [Policy Text Block] Restrictions on Cash and Cash Equivalents [Table] Restrictions on Cash and Cash Equivalents [Table] Restricted Cash and Cash Equivalents Items [Line Items] Restricted cash reserves due from subsidiary Restricted Cash and Cash Equivalents Collateral Derivatives And Other Contracts, Collateral, Right To Reclaim Cash Derivatives And Other Contracts, Collateral, Right To Reclaim Cash Allowance for loan losses Reserve for unfunded lending commitments Reserve For Unfunded Lending Commitments Reserves associated with probable credit losses related to commitments to lend amounts to borrowers as of the balance sheet date. Allowance for credit losses Financing Receivable, Allowance for Credit Losses Projected benefit obligation Defined Benefit Plan, Benefit Obligation Fair value of plan assets Defined Benefit Plan, Plan Assets, Amount Funded status Defined Benefit Plan, Funded (Unfunded) Status of Plan Schedule Of Deposits [Table] Schedule Of Deposits [Table] Schedule Of Deposits [Table] Deposits By Type [Axis] Deposits By Type [Axis] Deposits By Type [Domain] Deposits By Type [Domain] Certificates of Deposit Certificates of Deposit [Member] Deposits [Line Items] Deposits [Line Items] Noninterest-bearing demand Noninterest-bearing Deposit Liabilities Interest-bearing demand Interest-bearing Domestic Deposit, Demand Savings and money market accounts Deposits, Savings And Money Market Accounts Deposits, Savings And Money Market Accounts Total demand and savings Noninterest Bearing And Interest Bearing Demand And Savings And Money Market Deposits Noninterest Bearing And Interest Bearing Demand And Savings And Money Market Deposits Time deposits Time Deposits Total Deposits Deposits Time Deposits, $100,000 or More Time Deposits, $100,000 or More Time Deposits, $250,000 or More Time Deposits, $250,000 or More Time Deposits, $250,000 or More Maturities of Time Deposits [Abstract] 2019 Time Deposit Maturities, Next Twelve Months 2020 Time Deposit Maturities, Year Two 2021 Time Deposit Maturities, Year Three 2022 Time Deposit Maturities, Year Four 2023 Time Deposit Maturities, Year Five Thereafter Time Deposit Maturities, after Year Five Total Interest-bearing Domestic Deposit, Brokered Interest-bearing Domestic Deposit, Brokered Property, Plant and Equipment [Abstract] Premises and Equipment Property, Plant and Equipment Disclosure [Text Block] Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] 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 Estimated Fair Value Amortized Cost Debt Securities, Held-to-maturity Gross Unrealized Gains Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain Gross Unrealized Losses Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Amortized Cost Available-for-sale Securities, Amortized Cost Basis Gross Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Estimated Fair Value Available-for-sale Securities Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Volatility of Corporation’s stock Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Defined Benefit Plan, Estimated Future Benefit Payments [Abstract] Defined Benefit Plan, Expected Future Benefit Payment [Abstract] 2019 Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months 2020 Defined Benefit Plan, Expected Future Benefit Payment, Year Two 2021 Defined Benefit Plan, Expected Future Benefit Payment, Year Three 2022 Defined Benefit Plan, Expected Future Benefit Payment, Year Four 2023 Defined Benefit Plan, Expected Future Benefit Payment, Year Five 2024-2028 Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter Defined Benefit Plan Expected Future Benefit Payments Defined Benefit Plan Expected Future Benefit Payments Defined Benefit Plan Expected Future Benefit Payments Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Projected benefit obligation at beginning of year Change in assumptions Change Due to Change In Assumptions Change Due to Change In Assumptions Experience gain Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) Projected benefit obligation at end of year Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Fair value of plan assets at beginning of year Actual return on plan assets Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Fair value of plan assets at end of year Employer contributions Defined Benefit Plan, Plan Assets, Contributions by Employer Defined Benefit Plan, Benefit Obligation, Benefits Paid Defined Benefit Plan, Benefit Obligation, Benefits Paid Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Schedule of Unrecognized Compensation Cost, Nonvested Awards Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block] Schedule of Share-based Compensation, Stock Options, Activity Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Nonvested Share Activity Schedule of Nonvested Share Activity [Table Text Block] Schedule Of Options Exercised Schedule Of Options Exercised [Table Text Block] Schedule Of Options Exercised [Table Text Block] Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] 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] Schedule of Changes in Assets and Liabilities Measured at Fair Value on a Recurring Basis using Level 3 Inputs Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Fair Value, Assets and Liabilities Measured on Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Details of Book Value and Fair Value of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Reconciliation of Weighted Average Common Shares Outstanding Schedule of Weighted Average Number of Shares [Table Text Block] Schedule of Immaterial Corrections of Cash and Restricted Cash Schedule of Change in Accounting Estimate [Table Text Block] Schedule of Servicing Assets at Amortized Value [Table] Servicing Asset at Amortized Cost [Table] Mortgage Mortgages [Member] Servicing Assets at Amortized Value [Line Items] Servicing Asset at Amortized Cost [Line Items] Net additions (deductions) to the valuation allowance Valuation Allowance for Impairment of Recognized Servicing Assets, Additions (Deductions) for Expenses (Recoveries) Estimated fair value of MSRs Servicing Asset at Fair Value, Amount Amortization expense Servicing Asset at Amortized Cost, Amortization Common Stock cash dividends (usd per share) Class of Treasury Stock [Table] Class of Treasury Stock [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] November 2017 Stock Repurchase Program November 2017 Stock Repurchase Program [Member] November 2017 Stock Repurchase Program [Member] November 2018 Stock Repurchase Program November 2018 Stock Repurchase Program [Member] November 2018 Stock Repurchase Program [Member] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Treasury stock, value Stock Repurchase Program, Authorized Amount Common stock repurchase amount Average cost per share of treasury stock acquired (usd per share) Treasury Stock Acquired, Average Cost Per Share Percent of common shares outstanding, expected to be delivered Share Repurchase Plan, Percent Of Common Shares Outstanding, Expected To Be Delivered Share Repurchase Plan, Percent Of Common Shares Outstanding, Expected To Be Delivered Stock Repurchase Program, Additional Amount Authorized Stock Repurchase Program, Additional Amount Authorized Stock Repurchase Program, Additional Amount Authorized Commercial Real Estate [Member] Commercial Real Estate [Member] Total accruing TDRs Total Accruing Troubled Debt Restructurings Total Accruing Troubled Debt Restructurings Non-accrual TDRs Non-accrual Troubled Debt Restructurings