Entity Central Index Key Cost of mortgage-based securities, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Held to maturity securities debt maturities within one year unrealized gains. Held to maturity securities debt maturities after one through five years unrealized gains. Held to maturity securities debt maturities after five through ten years unrealized gains. Held to maturity securities debt maturities after ten years unrealized gains. Held to maturity securities debt maturities within one year unrealized losses. Held to maturity securities debt maturities after one through five years unrealized losses. Held to maturity securities debt maturities after five through ten years unrealized losses. Held to maturity securities debt maturities after ten years unrealized losses. Fair value of other marketable investments not classified as trading, available-for-sale or held-to-maturity. Cover [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Current Reporting Status Entity Current Reporting Status Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Entity Shell Company Entity Shell Company Entity File Number Entity File Number Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address Address Line1 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 Security12b Title Entity Interactive Data Current Entity Interactive Data Current Document Quarterly Report Document Quarterly Report Document Transition Report Document Transition Report Security Exchange Name Security Exchange Name Entity Incorporation, State or Country Code Entity Incorporation State Country Code Held-to-maturity securities, net of allowance for credit losses. Time deposits, less than $250,000. Time deposits, $250,000 or more. Statement Of Financial Position [Abstract] ASSETS Assets [Abstract] Loans Loans And Leases Receivable Gross Carrying Amount Allowance for credit losses on loans Loans And Leases Receivable Allowance Net loans Loans And Leases Receivable Net Reported Amount Loans held for sale Loans Receivable Held For Sale Net Not Part Of Disposal Group Securities: Investments [Abstract] Available for sale (amortized cost of $8,331,431 and $7,323,980, respectively) Available For Sale Securities Debt Securities Held to maturity, net of allowance for credit losses of $2,806 and $0, respectively (fair value of $1,099,289 and $1,082,345, respectively) Held To Maturity Securities Net Of Allowance For Credit Losses Trading securities Trading Securities Other securities Other Investments Total securities Investments Federal funds sold and securities purchased under agreements to resell Federal Funds Sold And Securities Purchased Under Agreements To Resell Interest-bearing due from banks Interest Bearing Deposits In Banks Cash and due from banks Cash And Due From Banks Premises and equipment, net Property Plant And Equipment Net Accrued income Accrued Investment Income Receivable Goodwill Goodwill Other intangibles, net Finite Lived Intangible Assets Net Other assets Other Assets Total assets Assets LIABILITIES Liabilities [Abstract] Deposits: Deposits [Abstract] Noninterest-bearing demand Noninterest Bearing Deposit Liabilities Interest-bearing demand and savings Interest Bearing Deposit Liabilities Time deposits under $250,000 Time Deposits Less Than250000 Time deposits of $250,000 or more Time Deposits250000 Or More Total deposits Deposits Federal funds purchased and repurchase agreements Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Short-term debt Short Term Borrowings Long-term debt Long Term Debt Accrued expenses and taxes Accrued Liabilities Current And Noncurrent Other liabilities Other Liabilities Total liabilities Liabilities SHAREHOLDERS' EQUITY Stockholders Equity [Abstract] Common stock, $1.00 par value; 80,000,000 shares authorized; 55,056,730 shares issued, 48,028,679 and 49,097,606 shares outstanding, respectively Common Stock Value Capital surplus Additional Paid In Capital Common Stock Retained earnings Retained Earnings Accumulated Deficit Accumulated other comprehensive income, net Accumulated Other Comprehensive Income Loss Net Of Tax Treasury stock, 7,028,051 and 5,959,124 shares, at cost, respectively Treasury Stock Value Total shareholders' equity Stockholders Equity Total liabilities and shareholders' equity Liabilities And Stockholders Equity Available for sale securities, amortized cost Available For Sale Debt Securities Amortized Cost Basis Held to maturity securities, allowance for credit losses Debt Securities Held To Maturity Allowance For Credit Loss Held to Maturity, Fair value Held To Maturity Securities Fair Value Common stock, par value Common Stock Par Or Stated Value Per Share Common stock, shares authorized Common Stock Shares Authorized Common stock, shares issued Common Stock Shares Issued Common stock, shares outstanding Common Stock Shares Outstanding Treasury stock, shares Treasury Stock Shares Interest and dividend income on trading securities. Interest income expense other. Trust and securities processing income. Service charges on deposit accounts. Brokerage fees. Bankcard fees. Amounts expensed related to payment processing, including fraud losses, interchange, embossing, processing, and collection expense. Amounts paid related to regulatory assessments, including FDIC insurance and bank examination expense. Income Statement [Abstract] INTEREST INCOME Interest And Dividend Income Operating [Abstract] Loans Interest And Fee Income Loans And Leases Securities: Interest And Dividend Income Securities By Taxable Status [Abstract] Taxable interest Interest Income Securities Taxable Tax-exempt interest Interest Income Securities Tax Exempt Total securities income Interest And Dividend Income Securities Federal funds and resell agreements Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell Interest-bearing due from banks Interest Income Deposits With Financial Institutions Trading securities Interest And Dividend Income On Trading Securities Total interest income Interest And Dividend Income Operating INTEREST EXPENSE Interest Expense [Abstract] Deposits Interest Expense Deposits Federal funds and repurchase agreements Interest Expense Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Other Interest Income Expense Other Total interest expense Interest Expense Net interest income Interest Income Expense Net Provision for credit losses Provision For Loan Lease And Other Losses Net interest income after provision for credit losses Interest Income Expense After Provision For Loan Loss NONINTEREST INCOME Noninterest Income [Abstract] Trust and securities processing Trust And Securities Processing Income Trading and investment banking Investment Banking Advisory Brokerage And Underwriting Fees And Commissions Service charges on deposit accounts Service Charges On Deposit Accounts Insurance fees and commissions Insurance Commissions And Fees Brokerage fees Brokerage Fees Bankcard fees Bankcard Fees Gains on sales of securities available for sale, net Debt Securities Realized Gain Loss Other Noninterest Income Other Operating Income Total noninterest income Noninterest Income NONINTEREST EXPENSE Noninterest Expense [Abstract] Salaries and employee benefits Labor And Related Expense Occupancy, net Occupancy Net Equipment Equipment Expense Supplies and services Supplies Expense Marketing and business development Marketing And Advertising Expense Processing fees Noninterest Expense Transfer Agent And Custodian Fees Legal and consulting Legal Fees Bankcard Noninterest Expense Payment Processing Amortization of other intangible assets Amortization Of Intangible Assets Regulatory fees Regulatory Assessments Other Other Noninterest Expense Total noninterest expense Noninterest Expense Income before income taxes Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income tax expense Income Tax Expense Benefit NET INCOME Net Income Loss PER SHARE DATA Earnings Per Share [Abstract] Net income – basic Earnings Per Share Basic Net income – diluted Earnings Per Share Diluted Dividends Common Stock Dividends Per Share Cash Paid Weighted average shares outstanding – basic Weighted Average Number Of Shares Outstanding Basic Weighted average shares outstanding – diluted Weighted Average Number Of Diluted Shares Outstanding Change in unrealized holding gains, net of the reclassification adjustment for gains included in net income. Statement Of Income And Comprehensive Income [Abstract] Net income Other comprehensive income, before tax: Other Comprehensive Income Loss Before Tax Period Increase Decrease [Abstract] Unrealized gains and losses on debt securities: Other Comprehensive Income Available For Sale Securities Adjustment Before Tax Period Increase Decrease [Abstract] Change in unrealized holding gains and losses, net Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax Less: Reclassification adjustment for gains included in net income Other Comprehensive Income Loss Reclassification Adjustment From A O C I For Sale Of Securities Before Tax Change in unrealized gains and losses on debt securities during the period Change In Unrealized Holding Gains Net Of Realized Net Holding Gains Unrealized gains and losses on derivative hedges: Other Comprehensive Income Derivatives Qualifying As Hedges Before Tax Period Increase Decrease [Abstract] Change in unrealized gains and losses on derivative hedges Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax Less: Reclassification adjustment for (gains) losses included in net income Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax Change in unrealized gains and losses on derivative hedges Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Other comprehensive income, before tax Other Comprehensive Income Loss Before Tax Income tax expense Other Comprehensive Income Loss Tax Other comprehensive income Other Comprehensive Income Loss Net Of Tax Comprehensive income Comprehensive Income Net Of Tax Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] Accumulated Other Comprehensive (Loss) Income Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock Common Stock [Member] Capital Surplus Additional Paid In Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive (Loss) Income Accumulated Other Comprehensive Income [Member] Treasury Stock Treasury Stock [Member] Cumulative Effect, Period of Adoption Cumulative Effect Period Of Adoption [Axis] Cumulative Effect, Period of Adoption Cumulative Effect Period Of Adoption [Domain] Cumulative Effect Adjustment [Member] Cumulative Effect Period Of Adoption Adjustment [Member] Statement [Line Items] Statement [Line Items] Beginning Balance Total comprehensive income Dividends Dividends Purchase of treasury stock Treasury Stock Value Acquired Cost Method Forfeitures of equity awards, net of issuances Stock Issued During Period Value Share Based Compensation Recognition of equity-based compensation Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Sale of treasury stock Stock Issued During Period Value Treasury Stock Reissued Exercise of stock options Stock Issued During Period Value Stock Options Exercised Accounting Standards Update [Extensible List] Accounting Standards Update Extensible List Ending Balance Dividends, per share Net amortization of premiums and discounts from acquisition. Deferred income tax expense benefit continuing and discontinued operations. Increase Decrease In Trading Securities And Other Earning Assets Payment on low-income housing tax credit investment commitments. Payments to proceeds from acquisition and divestitures. Increase decrease in demand and savings deposits. Proceeds from exercise of stock options and sales of treasury share. 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 To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Net amortization of premiums and discounts from acquisition Net Amortization Of Premiums And Discounts From Acquisition Depreciation and amortization Depreciation And Amortization Amortization of debt issuance costs Amortization Of Financing Costs Deferred income tax (benefit) expense Deferred Income Tax Expense Benefit Continuing And Discontinued Operations Net increase in trading securities and other earning assets Increase Decrease In Trading Securities And Other Earning Assets Gains on sales of securities available for sale, net Gains on sales of assets Gain Loss On Disposition Of Assets1 Amortization of securities premiums, net of discount accretion Accretion Amortization Of Discounts And Premiums Investments Originations of loans held for sale Payments For Origination And Purchases Of Loans Held For Sale Gains on sales of loans held for sale, net Gain Loss On Sale Of Loans And Leases Proceeds from sales of loans held for sale Proceeds From Sale Of Loans Held For Sale Equity-based compensation Share Based Compensation Net tax benefit related to equity compensation plans Excess Tax Benefit From Share Based Compensation Operating Activities Changes in: Increase Decrease In Operating Capital [Abstract] Accrued income Increase Decrease In Accrued Investment Income Receivable Accrued expenses and taxes Increase Decrease In Accrued Liabilities Other assets and liabilities, net Increase Decrease In Other Operating Capital Net Net cash provided by operating activities Net Cash Provided By Used In Operating Activities INVESTING ACTIVITIES Net Cash Provided By Used In Investing Activities [Abstract] Proceeds from maturities of securities held to maturity Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities Proceeds from sales of securities available for sale Proceeds From Sale Of Available For Sale Securities Debt Proceeds from maturities of securities available for sale Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities Purchases of securities held to maturity Payments To Acquire Held To Maturity Securities Purchases of securities available for sale Payments To Acquire Available For Sale Securities Debt Payment on low-income housing tax credit investment commitments Payment On Low Income Housing Tax Credit Investment Commitments Net increase in loans Payments For Proceeds From Loans And Leases Net decrease in fed funds sold and resell agreements Proceeds From Payments For Federal Funds Sold And Securities Purchased Under Agreements To Resell Net Net cash activity from acquisitions and divestitures Payments To Proceeds From Acquisition And Divestitures Net increase in interest-bearing balances due from other financial institutions Proceeds From Payments For In Interest Bearing Deposits In Banks Purchases of premises and equipment Payments To Acquire Property Plant And Equipment Proceeds from sales of premises and equipment Proceeds From Sale Of Property Plant And Equipment Purchases of bank-owned and company-owned life insurance Payments To Acquire Life Insurance Policies Proceeds from bank-owned and company-owned life insurance death benefit Proceeds From Insurance Settlement Investing Activities Net cash used in investing activities Net Cash Provided By Used In Investing Activities FINANCING ACTIVITIES Net Cash Provided By Used In Financing Activities [Abstract] Net increase in demand and savings deposits Increase Decrease In Demand And Savings Deposits Net decrease in time deposits Increase Decrease In Time Deposits Net increase in fed funds purchased and repurchase agreements Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net Proceeds from short-term debt Proceeds From Short Term Debt Proceeds from long-term debt Proceeds From Issuance Of Long Term Debt Payment of debt issuance costs Payments Of Debt Issuance Costs Cash dividends paid Payments Of Dividends Proceeds from exercise of stock options and sales of treasury shares Proceeds From Exercise Of Stock Options And Sales Of Treasury Share Purchases of treasury stock Payments For Repurchase Of Common Stock Net cash provided by financing activities Net Cash Provided By Used In Financing Activities Increase (decrease) in cash and cash equivalents Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Cash and cash equivalents at beginning of period Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Cash and cash equivalents at end of period Acquisition of low-income housing tax credit investments. Commitment to fund low-income housing tax credit investments. Supplemental disclosures: Supplemental Cash Flow Information [Abstract] Income tax payments Income Taxes Paid Net Total interest payments Interest Paid Net Noncash disclosures: Noncash Investing And Financing Items [Abstract] Acquisition of low-income housing tax credit investments Acquisition Of Low Income Housing Tax Credit Investments Commitment to fund low-income housing tax credit investments Commitment To Fund Low Income Housing Tax Credit Investments Accounting Policies [Abstract] Financial Statement Presentation Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Accounting Changes And Error Corrections [Abstract] New Accounting Pronouncements New Accounting Pronouncements And Changes In Accounting Principles [Text Block] Receivables [Abstract] Loans and Allowance for Credit Losses Loans Notes Trade And Other Receivables Disclosure [Text Block] Investments Debt And Equity Securities [Abstract] Securities Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosure [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Other Intangibles Goodwill And Intangible Assets Disclosure [Text Block] Federal Funds Purchased And Securities Sold Under Agreements To Repurchase [Abstract] Securities Sold Under Agreements to Repurchase Repurchase Agreements Resale Agreements Securities Borrowed And Securities Loaned Disclosure [Text Block] Segment Reporting [Abstract] Business Segment Reporting Segment Reporting Disclosure [Text Block] Revenue From Contract With Customer [Abstract] Revenue Recognition Revenue From Contract With Customer [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments, Contingencies and Guarantees Commitments And Contingencies Disclosure [Text Block] Derivative Instruments And Hedging Activities Disclosure [Abstract] Derivatives and Hedging Activities Derivative Instruments And Hedging Activities Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Subsequent Events [Abstract] Subsequent Event Subsequent Events [Text Block] Nature Of Operations, Policy. Nature Of Operations Nature Of Operations Policy [Text Block] Cash and cash equivalents Cash And Cash Equivalents Policy [Text Block] Per Share Data Earnings Per Share Policy [Text Block] Derivatives Derivatives Policy [Text Block] Summary of Cash and Cash Equivalents Schedule Of Cash And Cash Equivalents Table [Text Block] Summary of Loan Classes and Aging of Past Due Loans Past Due Financing Receivables Table [Text Block] Summary of Amortized Cost of Nonaccrual Loans with No Related Allowance Schedule Of Financing Receivables Non Accrual Status Table [Text Block] Summary of amortized cost of loans by loan segments and related collateral. Summary of Amortized Cost Balance of Each of Loan Classes Disaggregated by Collateral Type and Origination Year Summary Of Amortized Cost Of Loans By Loan Segments And Related Collateral Table [Text Block] Summary of amortized cost balance by collateral type and risk rating. Summary of Amortized Cost Balance by Collateral Type and Risk Rating Summary Of Amortized Cost Balance By Collateral Type And Risk Rating Table [Text Block] Credit Risk Profile by Risk Rating and Based on Payment Activity Financing Receivable Credit Quality Indicators Table [Text Block] Rollforward of Allowance for Credit/Loan Losses by Portfolio Segment Allowance For Credit Losses On Financing Receivables Table [Text Block] Schedule of amortized cost balance of financial assets considered collateral dependent. Summary of Amortized Cost Balance of Financial Assets Considered Collateral Dependent Schedule Of Amortized Cost Balance Of Financial Assets Considered Collateral Dependent Table [Text Block] Analysis of Impaired Loans Impaired Financing Receivables Table [Text Block] Debt Security Category Information By Category Of Debt Security [Axis] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments Other Than Temporary Impairment Credit Losses Recognized In Earnings Categories Of Investments [Domain] Available-for-sale Securities [Member] Availableforsale Securities [Member] Held-to-maturity Securities [Member] Heldtomaturity Securities [Member] Securities Available for Sale Debt Securities Available For Sale Table [Text Block] Contractual Maturity Information Investments Classified By Contractual Maturity Date Table [Text Block] Gross Unrealized Losses and Fair Value of Investment Securities Available for Sale Schedule Of Unrealized Loss On Investments Table [Text Block] Gross Unrealized Losses and Fair Value of Investment Securities Held to Maturity Held To Maturity Securities [Text Block] Schedule of Amortized Cost Basis by Credit Rating of Held to Maturity Investment Debt Securities Held To Maturity Credit Quality Indicator Table [Text Block] Tabular disclosure of Federal Reserve Bank Stock and Other Securities, including both marketable and non-marketable securities. Schedule of Federal Reserve Bank Stock and Federal Home Loan Bank Stock and Other Securities Federal Reserve Bank Stock And Other Table [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] Changes in Carrying Amount of Goodwill Schedule Of Goodwill [Text Block] Changes in Intangible Assets Schedule Of Finite Lived Intangible Assets Table [Text Block] Aggregate Amortization Expense Recognized Finite Lived Intangible Assets Amortization Expense Table [Text Block] Estimated Amortization Expense of Intangible Assets Scheduleof Finite Lived Intangible Assets Future Amortization Expense Table [Text Block] Investment Type Investment Type [Axis] Investments Investment Type Categorization [Member] Repurchase Agreements Repurchase Agreements [Member] Remaining Contractual Maturities Of Repurchase Agreements Schedule Of Repurchase Agreements Schedule of Segment Financial Results Schedule Of Segment Reporting Information By Segment [Text Block] Summary of Disaggregation of Revenue According to Revenue Stream and Business Segment Schedule Of Entity Wide Information Revenue From External Customers By Products And Services [Text Block] Tabular disclosure of information related to the notional amount of off-balance sheet financial instruments. Notional Amount of Off-Balance Sheet Financial Instruments Schedule Of Notional Amount Of Off Balance Sheet Financial Instruments [Text Block] Summary of Fair Value of Derivative Assets and Liabilities Schedule Of Derivative Instruments In Statement Of Financial Position Fair Value [Text Block] Summary of Amount of Gain (Loss) Recognized in Other Non-Interest Expense in Consolidated Statements of Income Related to Derivative Assets and Liabilities Schedule Of Derivative Instruments Gain Loss In Statement Of Financial Performance [Text Block] Summary of Effect of Hedges on AOCI in Consolidated Statements of Comprehensive Income Related to Company's Derivative Assets and Liabilities Schedule Of Derivative Instruments Effect On Other Comprehensive Income Loss Table [Text Block] Assets and Liabilities Measured at Fair Value on Recurring Basis Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis Table [Text Block] Assets Measured at Fair Value on Non-Recurring Basis Fair Value Assets Measured On Nonrecurring Basis [Text Block] Estimated Fair Value of Financial Instruments Fair Value By Balance Sheet Grouping [Text Block] A bank's interest bearing deposit account held at the Federal Reserve Bank. Due from the FRB Due From Federal Reserve Cash and cash equivalents at end of period Cash And Cash Equivalents At Carrying Value Interest bearing other accounts. Interest bearing amounts held at other financial institutions Interest Bearing Other Accounts Dilutive effect of common stock issuable upon exercise of options Incremental Common Shares Attributable To Share Based Payment Arrangements Anti-dilutive shares Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount New Accounting Pronouncements And Changes In Accounting Principles [Abstract] New Accounting Pronouncements Or Change In Accounting Principle [Table] New Accounting Pronouncements Or Change In Accounting Principle [Table] Accounting Standards Update Adjustments For New Accounting Pronouncements [Axis] Accounting Standards Update Type Of Adoption [Member] Accounting Standards Update 2016-02 [Member] Accounting Standards Update201602 [Member] ASU Nos. 2016-13 [Member] Accounting Standards Update201613 [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements Or Change In Accounting Principle [Line Items] Right-of-use asset Operating Lease Right Of Use Asset Lease liability Operating Lease Liability Allowance for credit losses Reduction to retained earnings, net of deferred tax balances Schedule Of Accounts Notes Loans And Financing Receivable [Table] Schedule Of Accounts Notes Loans And Financing Receivable [Table] Financing Receivable Portfolio Segment Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment Financing Receivable Portfolio Segment [Domain] Commercial and industrial portfolio segment. Commercial and Industrial Portfolio [Member] Commercial And Industrial Portfolio Segment [Member] Speciality lending portfolio segment. Specialty Lending Portfolio [Member] Speciality Lending Portfolio Segment [Member] Commercial Real Estate Portfolio [Member] Commercial Real Estate Portfolio Segment [Member] Consumer real estate portfolio segment. Consumer Real Estate Portfolio [Member] Consumer Real Estate Portfolio Segment [Member] Consumer Portfolio [Member] Consumer Portfolio Segment [Member] Credit cards portfolio segment. Credit Cards Portfolio [Member] Credit Cards Portfolio Segment [Member] Leases and other portfolio segment. Leases and Other Portfolio [Member] Leases And Other Portfolio Segment [Member] 30-89 Days Past Due and Accruing [Member] Financing Receivables Period Past Due [Axis] Financial Asset, Period Past Due Financing Receivables Period Past Due [Domain] Financing receivables 30 To 89 days past due. 30-89 Days Past Due and Accruing [Member] Financing Receivables30 To89 Days Past Due [Member] Greater than 90 days Past Due and Accruing [Member] Financing Receivables Equal To Greater Than90 Days Past Due [Member] Commercial Portfolio [Member] Commercial Portfolio Segment [Member] Leases Portfolio [Member] Finance Leases Portfolio Segment [Member] Real estate portfolio segment. Real Estate Portfolio [Member] Real Estate Portfolio Segment [Member] Class of Financing Receivable Financing Receivable Recorded Investment By Class Of Financing Receivable [Axis] Class of Financing Receivable Financing Receivable Recorded Investment Class Of Financing Receivable [Domain] Commercial loan class. Commercial [Member] Commercial Loan Class [Member] Asset based loans. Asset-based [Member] Asset Based Loans [Member] Factoring loans. Factoring [Member] Factoring Loans [Member] Commercial credit card. Commercial Credit Card [Member] Commercial Credit Card [Member] Construction [Member] Construction Loans [Member] Commercial real estate loan class. Commercial [Member] Commercial Real Estate Loan Class [Member] Residential real estate loan class. Residential [Member] Residential Real Estate Loan Class [Member] Real estate HELOC. HELOC [Member] Real Estate Heloc [Member] Consumer credit card. Consumer Credit Card [Member] Consumer Credit Card [Member] Other financing receivable. Other [Member] Other Financing Receivable [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts Notes And Loans Receivable [Line Items] Total Past Due Financing Receivable Recorded Investment Past Due Non- Accrual Loans Financing Receivable Recorded Investment Nonaccrual Status Current Financing Receivable Recorded Investment Current Total Loans Notes Receivable Gross Total Loans Schedule Of Financing Receivable Allowance For Credit Losses [Table] Schedule Of Financing Receivable Allowance For Credit Losses [Table] Consumer real estate loan class. Consumer Real Estate [Member] Consumer Real Estate Loan Class [Member] Receivable Type Accounts Notes Loans And Financing Receivable By Receivable Type [Axis] Receivable Receivable Type [Domain] Impaired loans with associated allowance. Impaired Loans With Associated Allowance [Member] Impaired Loans With Associated Allowance [Member] Statistical Measurement Range [Axis] Statistical Measurement Range [Member] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Commercial Real Estate [Member] Commercial Real Estate [Member] Real Estate Residential [Member] Residential Portfolio Segment [Member] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable Allowance For Credit Losses [Line Items] Restructured loans Financing Receivable Modifications Recorded Investment Non accrual loans with no related allowance for credit losses Financing Receivable Nonaccrual No Allowance Financing Receivable Nonaccrual [Table] Financing Receivable Nonaccrual [Table] Financing Receivable Nonaccrual Status [Line Items] Financing Receivable Nonaccrual Status [Line Items] Amortized Cost of Non-Accrual Loans with no related Allowance Equipment, accounts receivable, inventory. Equipment/Accounts Receivable/Inventory [Member] Equipment Accounts Receivable Inventory [Member] Agriculture loans. Agriculture [Member] Agriculture Loans [Member] Overdrafts. Overdrafts [Member] Overdrafts [Member] Asset-based Lending [Member] Commercial real estate owner occupied. Owner-occupied [Member] Commercial Real Estate Owner Occupied [Member] Commercial real estate non-owner occupied. Non-owner-occupied [Member] Commercial Real Estate Non Owner Occupied [Member] Commercial real estate farmland. Farmland [Member] Commercial Real Estate Farmland [Member] Commercial real estate 5+ multi family. 5+ Multi-family [Member] Commercial Real Estate Five Plus Multi Family [Member] Commercial real estate 1 - 4 multi family construction. 1-4 Family Construction [Member] Commercial Real Estate One To Four Multi Family Construction [Member] Commercial real estate general construction. General Construction [Member] Commercial Real Estate General Construction [Member] Real estate first lien 1 - 4 family. First Lien: 1-4 Family [Member] Real Estate First Lien One To Four Family [Member] Real estate junior lien 1 - 4 family. Junior Lien: 1-4 Family [Member] Real Estate Junior Lien One To Four Family [Member] Consumer other revolving line. Revolving Line [Member] Consumer Other Revolving Line [Member] Consumer other auto. Auto [Member] Consumer Other Auto [Member] Consumer other. Other [Member] Consumer Other [Member] Consumer [Member] Commercial [Member] Other financing leases. Leases [Member] Other Financing Leases [Member] Amortized Cost Basis by Origination Year 2020 Financing Receivable Originated In Current Fiscal Year Amortized Cost Basis by Origination Year 2019 Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year Amortized Cost Basis by Origination Year 2018 Financing Receivable Originated Two Years Before Latest Fiscal Year Amortized Cost Basis by Origination Year 2017 Financing Receivable Originated Three Years Before Latest Fiscal Year Amortized Cost Basis by Origination Year 2016 Financing Receivable Originated Four Years Before Latest Fiscal Year Amortized Cost Basis by Origination Year Prior to 2016 Financing Receivable Originated Five Or More Years Before Latest Fiscal Year Amortized Cost - Revolving Loans Financing Receivable Revolving Amortized Cost - Revolving Loans Converted to Term Loans Financing Receivable Revolving Converted To Term Loan Accrued interest on loans Interest Receivable Internal Credit Assessment Internal Credit Assessment [Axis] Internal Credit Assessment Internal Credit Assessment [Domain] Non watch list pass. Non-watch List-Pass [Member] Non Watch List Pass [Member] Watch pass. Watch-Pass [Member] Watch Pass [Member] Special Mention [Member] Special Mention [Member] Substandard [Member] Substandard [Member] Doubtful [Member] Doubtful [Member] In-margin. In-margin [Member] In Margin [Member] Out-of-margin. Out-of-margin [Member] Out Of Margin [Member] Tier 1. Tier 1 [Member] Tier One [Member] Tier 2. Tier 2 [Member] Tier Two [Member] Evaluated for impairment. Evaluated for Impairment [Member] Evaluated For Impairment [Member] Financial Instrument Performance Status Financial Instrument Performance Status [Axis] Financial Instrument Performance Status Financial Instrument Performance Status [Domain] Performing [Member] Performing Financing Receivable [Member] Non-performing [Member] Nonperforming Financing Receivable [Member] Transactor accounts. Transactor Accounts [Member] Transactor Accounts [Member] Revolver accounts. Revolver Accounts Revolver Accounts [Member] Credit Score, FICO Credit Score Fico [Axis] Credit Score, FICO Credit Score Fico [Domain] FICO Score, less than 600. FICO Score, Less than 600 [Member] Fico Score Less Than600 [Member] FICO score, 600 to 699. FICO Score, 600-619 [Member] Fico Score600 To619 [Member] FICO score, 620 to 639. FICO Score, 620-639 [Member] Fico Score620 To639 [Member] FICO score, 640 to 659. FICO Score, 640-659 [Member] Fico Score640 To659 [Member] FICO score, 660 to 679. FICO Score, 660-679 [Member] Fico Score660 To679 [Member] FICO score, 680 to 699. FICO Score, 680-699 [Member] Fico Score680 To699 [Member] FICO score, 700 to 719. FICO Score, 700-719 [Member] Fico Score700 To719 [Member] FICO score, 720 to 739. FICO Score, 720-739 [Member] Fico Score720 To739 [Member] FICO score, 740 to 759. FICO Score, 740-759 [Member] Fico Score740 To759 [Member] FICO score, 760 to 779. FICO Score, 760-779 [Member] Fico Score760 To779 [Member] FICO score, 780 to 799. FICO Score, 780-799 [Member] Fico Score780 To799 [Member] FICO score, 800 to 819. FICO Score, 800-819 [Member] Fico Score800 To819 [Member] FICO score, 820 to 839. FICO Score, 820-839 [Member] Fico Score820 To839 [Member] FICO score, greater than 840. FICO Score, 840+ [Member] Fico Score Greater Than840 [Member] Loans associated allowance Allowance For Loan And Lease Losses Loans Acquired Schedule Of Financing Receivable Recorded Investment Credit Quality Indicator [Table] Schedule Of Financing Receivable Recorded Investment Credit Quality Indicator [Table] Commercial real estate construction financing receivables. Real estate - construction [Member] Commercial Real Estate Construction Financing Receivables [Member] Real estate - commercial [Member] Originated and non purchased credit impaired loans. Originated and Non-PCI Loans [Member] Originated And Non Purchased Credit Impaired Loans [Member] Financing Receivable, Recorded Investment [Line Items] Financing Receivable Recorded Investment [Line Items] Credit Risk Profile by Risk Rating Real Estate Residential [Member] Real Estate HELOC [Member] Consumer Other [Member] Credit Risk Profile Based on Payment Activity Number of reasonable and supportable forecast period. Number of reasonable and supportable forecast period Number Of Reasonable And Supportable Forecast Period Loans portfolio segment. Total - Loans [Member] Loans Portfolio Segment [Member] Held to maturity portfolio segment. HTM [Member] Held To Maturity Portfolio Segment [Member] ASU 2016-13 Adjustment [Member] Beginning balance Financing Receivable Allowance For Credit Losses Charge-offs Financing Receivable Allowance For Credit Losses Write Offs Recoveries Financing Receivable Allowance For Credit Losses Recovery Provision Provision For Loan Losses Expensed Ending balance - ACL Beginning balance - ACL on off-balance sheet Off Balance Sheet Credit Loss Liability Provision Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal Ending balance - ACL on off-balance sheet New accounting pronouncement or change in accounting principle effect of adoption. ASU 2016-13 adjustment New Accounting Pronouncement Or Change In Accounting Principle Effect Of Adoption Provision for recovery of loan and lease losses. Beginning balance Charge-offs Allowance For Loan And Lease Losses Write Offs Recoveries Allowance For Loan And Lease Loss Recovery Of Bad Debts Provision Provision For Recovery Of Loan And Lease Losses Ending balance Ending balance: individually evaluated for impairment Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 Ending balance: collectively evaluated for impairment Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment Ending balance: loans Ending balance: individually evaluated for impairment Financing Receivable Individually Evaluated For Impairment Ending balance: collectively evaluated for impairment Financing Receivable Collectively Evaluated For Impairment Financing receivable with no related allowance for credit losses. Collateral Dependent Assets [Member] Collateral [Axis] Collateral Held Collateral [Domain] Collateral Dependent Assets [Member] Collateral Pledged [Member] Amortized Cost of Collateral Dependent Assets Related Allowance for Credit Losses Amortized Cost of Collateral Dependent Assets with no related Allowance Financing Receivable With No Related Allowance For Credit Losses Unpaid Principal Balance Impaired Financing Receivable Unpaid Principal Balance Recorded Investment with No Allowance Impaired Financing Receivable With No Related Allowance Recorded Investment Recorded Investment with Allowance Impaired Financing Receivable With Related Allowance Recorded Investment Total Recorded Investment Impaired Financing Receivable Recorded Investment Related Allowance Impaired Financing Receivable Related Allowance Average Recorded Investment Impaired Financing Receivable Average Recorded Investment Outstanding commitments to lend to borrowers with loan modifications classified as TDR's Loans And Leases Receivable Impaired Commitment To Lend Number of Contracts Financing Receivable Modifications Number Of Contracts2 Default payment of troubled restructuring Financing Receivable Modifications Subsequent Default Recorded Investment1 Schedule Of Available For Sale Securities [Table] Schedule Of Available For Sale Securities [Table] Financial Instrument Financial Instrument [Axis] Financial Instruments Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain] U.S. Treasury [Member] U S Treasury Securities [Member] U.S. Agencies [Member] U S Government Agencies Debt Securities [Member] Mortgage-backed [Member] Mortgage Backed Securities [Member] State and political subdivisions [Member] U S States And Political Subdivisions [Member] Corporates [Member] Corporate Debt Securities [Member] Schedule of Available-for-sale Securities [Line Items] Schedule Of Available For Sale Securities [Line Items] Amortized Cost Gross Unrealized Gains Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax Gross Unrealized Losses Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax Fair Value Due in 1 year or less, Amortized Cost Available For Sale Securities Debt Maturities Within One Year Amortized Cost Due after 1 year through 5 years, Amortized Cost Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost Due after 5 years through 10 years, Amortized Cost Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost Due after 10 years, Amortized Cost Available For Sale Securities Debt Maturities After Ten Years Amortized Cost Total, Amortized Cost Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis Mortgage-backed securities, Amortized Cost Mortgage Backed Securities Available For Sale Amortized Cost Due in 1 year or less, Fair Value Available For Sale Securities Debt Maturities Within One Year Fair Value Due after 1 year through 5 years, Fair Value Available For Sale Securities Debt Maturities After One Through Five Years Fair Value Due after 5 years through 10 years, Fair Value Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value Due after 10 years, Fair Value Available For Sale Securities Debt Maturities After Ten Years Fair Value Total, Fair Value Available For Sale Securities Debt Maturities Single Maturity Date Mortgage-backed securities, Fair Value Mortgage Backed Securities Available For Sale Fair Value Disclosure Total securities available for sale, Fair Value Trading Securities [Table] Schedule Of Trading Securities And Other Trading Assets [Table] Us Government and Other Public Deposit [Member] U.S. Government and Other Public Deposit [Member] Us Government And Other Public Deposit [Member] Federal Reserve Discount Window [Member] Federal Reserve Discount Window [Member] Federal Reserve Discount Window [Member] Other non-marketable securities. Other Non-marketable Securities [Member] Other Non Marketable Securities [Member] Schedule of Trading Securities and Other Trading Assets [Line Items] Schedule Of Trading Securities And Other Trading Assets [Line Items] Gross realized gains from securities Debt Securities Available For Sale Realized Gain Gross realized losses from securities Debt Securities Available For Sale Realized Loss Pledged securities for deposits Debt Securities Available For Sale Restricted Accrued interest receivable on debt securities available for sale. Accrued interest on securities available for sale Accrued Interest Receivable On Debt Securities Available For Sale Schedule of Gain (Loss) on Investments [Table] Schedule Of Gain Loss On Investments [Table] Gain (Loss) on Investments [Line Items] Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items] Less than 12 months, Count Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions Less than 12 months, Fair Value Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Less than 12 months, Unrealized Losses Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss 12 months or more, Count Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions 12 months or more, Fair Value Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer 12 months or more, Unrealized Losses Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss Total Count Debt Securities Available For Sale Unrealized Loss Position Number Of Positions Total Fair Value Debt Securities Available For Sale Unrealized Loss Position Total Unrealized Losses Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss ACL related to AFS Securities Debt Securities Available For Sale Allowance For Credit Loss Due in 1 year or less, Amortized Cost Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount Due after 1 year through 5 years, Amortized Cost Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount Due after 5 years through 10 years, Amortized Cost Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount Due after 10 years, Amortized Cost Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount Total state and political subdivisions, Amortized Cost Held To Maturity Securities Total state and political subdivisions, net of allowance for credit losses Due in 1 year or less, Gross Unrealized Gains Held To Maturity Securities Debt Maturities Within One Year Unrealized Gains Due after 1 year through 5 years, Gross Unrealized Gains Held To Maturity Securities Debt Maturities After One Through Five Years Unrealized Gains Due after 5 years through 10 years, Gross Unrealized Gains Held To Maturity Securities Debt Maturities After Five Through Ten Years Unrealized Gains Due after 10 years, Gross Unrealized Gains Held To Maturity Securities Debt Maturities After Ten Years Unrealized Gains Total state and political subdivisions, Gross Unrealized Gains Held To Maturity Securities Accumulated Unrecognized Holding Gain Due in 1 year or less, Gross Unrealized Losses Held To Maturity Securities Debt Maturities Within One Year Unrealized Losses Due after 1 year through 5 years, Gross Unrealized Losses Held To Maturity Securities Debt Maturities After One Through Five Years Unrealized Losses Due after 5 years through 10 years, Gross Unrealized Losses Held To Maturity Securities Debt Maturities After Five Through Ten Years Unrealized Losses Due after 10 years, Gross Unrealized Losses Held To Maturity Securities Debt Maturities After Ten Years Unrealized Losses Total state and political subdivisions, Gross Unrealized Losses Held To Maturity Securities Accumulated Unrecognized Holding Loss Due in 1 year or less, Fair Value Held To Maturity Securities Debt Maturities Within One Year Fair Value Due after 1 year through 5 years, Fair Value Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value Due after 5 years through 10 years, Fair Value Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value Due after 10 years, Fair Value Held To Maturity Securities Debt Maturities After Ten Years Fair Value Total state and political subdivisions, Fair Value Sales of securities held to maturity Proceeds From Sale And Maturity Of Held To Maturity Securities Schedule Of Held To Maturity Securities [Table] Schedule Of Held To Maturity Securities [Table] Schedule Of Held To Maturity Securities [Line Items] Schedule Of Held To Maturity Securities [Line Items] Less than 12 months, Fair Value Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value Less than 12 months,Unrealized Losses Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss 12 months or more, Fair Value Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value 12 months or more, Unrealized Losses Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss Total Fair Value Held To Maturity Securities Continuous Unrealized Loss Position Fair Value Total Unrealized Losses Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss Debt Securities Held To Maturity Credit Quality Indicator [Table] Debt Securities Held To Maturity Credit Quality Indicator [Table] Credit Rating, Moody's Credit Rating Moodys [Axis] External Credit Rating, Moody's External Credit Rating Moodys [Member] Credit Rating, AA [Member] Moodys A2 Rating [Member] Credit Rating, A [Member] Moodys A1 Rating [Member] Credit Rating, BBB [Member] Moodys B3 Rating [Member] Credit Rating, BB [Member] Moodys B2 Rating [Member] Credit Rating, B [Member] Moodys B1 Rating [Member] Credit Rating, CCC-C [Member] Moodys C Rating [Member] US States and Political Subdivisions, Competitive. Competitive [Member] U S States And Political Subdivisions Competitive [Member] US States and Political Subdivisions, Utilities. Utilities [Member] U S States And Political Subdivisions Utilities [Member] Debt Securities Held To Maturity Credit Quality Indicator [Line Items] Debt Securities Held To Maturity Credit Quality Indicator [Line Items] Held to maturity securities Accrued interest receivable on debt securities held to maturity. Accrued interest on securities held to maturity Accrued Interest Receivable On Debt Securities Held To Maturity Unrealized gains on trading securities Debt Securities Trading Unrealized Gain Loss Securities sold not yet purchased Security Owned And Sold Not Yet Purchased Fair Value Security Sold Not Yet Purchased Cost of other investments not classified as trading, available-for-sale or held-to-maturity, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Amount of unrealized gain before deducting unrealized loss on other investments not classified as trading, available-for-sale or held-to-maturity. Amount of unrealized loss on other securities not classified as trading, available-for-sale or held-to-maturity. Fair value of other investments not classified as trading, available-for-sale or held-to-maturity. Schedule of Other Securities [Line Items]. Other Securities Owned [Table] Other Securities Owned [Table] Other Securities Owned [Table] Federal Reserve Bank And Federal Home Loan Bank Stock [Member] FRB and FHLB stock [Member] Federal Reserve Bank And Federal Home Loan Bank Stock [Member] Other Marketable Securities [Member] Other securities - marketable [Member] Other Marketable Securities [Member] Nonmarketable securities [Member] Other securities - non-marketable [Member] Nonmarketable Securities [Member] Federal Reserve Bank Stock And Other [Member] Federal Reserve Bank Stock and Other Securities [Member] Federal Reserve Bank Stock And Other [Member] Schedule of Other Securities [Line Items] Schedule Of Other Securities [Line Items] Amortized Cost Other Securities Amortized Cost Gross Unrealized Gains Other Securities Gross Unrealized Gain Accumulated Investments Gross Unrealized Losses Other Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated Investments Fair Value Other Securities Fair Value Fair value of securities including alternative investment securities Alternative Investment Goodwill and other intangible assets. Goodwill And Other Intangible Assets [Table] Goodwill And Other Intangible Assets [Table] Goodwill And Other Intangible Assets [Table] Segments Statement Business Segments [Axis] Segments Segment [Domain] Commercial banking. Commercial Banking [Member] Commercial Banking [Member] Institutional banking. Institutional Banking [Member] Institutional Banking [Member] Personal banking. Personal Banking [Member] Personal Banking [Member] Goodwill And Other Intangible Assets [Line Items] Goodwill And Other Intangible Assets [Line Items] Schedule Of Finite Lived Intangible Assets [Table] Schedule Of Finite Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name Finite Lived Intangible Assets Major Class Name [Domain] Core Deposit Intangible Assets [Member] Core Deposits [Member] Customer Relationships [Member] Customer Relationships [Member] Finite Lived Intangible Assets [Line Items] Finite Lived Intangible Assets [Line Items] Gross carrying amount Finite Lived Intangible Assets Gross Accumulated amortization Finite Lived Intangible Assets Accumulated Amortization Net carrying amount Post-closing purchase adjustment. Customer Relationship [Member] Product and Service Product Or Service [Axis] Product and Service Products And Services [Domain] Corporate trust. Corporate Trust Business [Member] Corporate Trust [Member] Corporate trust one. Corporate Trust Business One [Member] Corporate Trust One [Member] Number of businesses acquired Number Of Businesses Acquired Aggregate intangibles acquired Payments To Acquire Intangible Assets Post-closing purchase adjustment Post Closing Purchase Adjustment Aggregate amortization expense For the three months ending December 31, 2020 Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year For the year ending December 31, 2021 Finite Lived Intangible Assets Amortization Expense Next Twelve Months For the year ending December 31, 2022 Finite Lived Intangible Assets Amortization Expense Year Two For the year ending December 31, 2023 Finite Lived Intangible Assets Amortization Expense Year Three For the year ending December 31, 2024 Finite Lived Intangible Assets Amortization Expense Year Four Brokers And Dealers [Abstract] Schedule of Assets Sold under Agreements to Repurchase [Table] Schedule Of Assets Sold Under Agreements To Repurchase [Table] Securities or Other Assets Sold under Agreements to Repurchase [Axis] Assets Sold Under Agreements To Repurchase [Axis] Assets Sold under Agreements to Repurchase, Type [Domain] Assets Sold Under Agreements To Repurchase Type [Domain] 2 to 29 days [Member] Assets Sold Under Agreements To Repurchase Maturity Periods [Axis] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Assets Sold Under Agreements To Repurchase Maturity Period [Domain] Overnight [Member] Maturity Overnight [Member] 2 to 29 days [Member] Maturity Up To30 Days [Member] 30 to 90 Days [Member] Maturity30 To90 Days [Member] Over 90 Days [Member] Maturity Over90 Days [Member] Assets Sold under Agreements to Repurchase [Line Items] Assets Sold Under Agreements To Repurchase [Line Items] Total repurchase agreements Securities Sold Under Agreements To Repurchase Number of reportable segments Number Of Reportable Segments Amount of average assets attributed to the reportable segment. Schedule of Segment Reporting Information, by Segment [Table] Schedule Of Segment Reporting Information By Segment [Table] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Net interest income Noninterest income Noninterest expense Income tax expense (benefit) Average assets Average Assets Bankcard expenses. Disaggregation Of Revenue [Table] Disaggregation Of Revenue [Table] ASC 606 [Member] Accounting Standards Update201409 [Member] Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Bankcard fees. Bankcard Fees [Member] Bankcard Fees [Member] Disaggregation Of Revenue [Line Items] Disaggregation Of Revenue [Line Items] Bankcard expenses Bankcard Expenses Total receivables of revenue recognized Accounts Receivable Net Trust and Securities Processing [Member] Fiduciary And Trust [Member] Trading and investment banking. Trading And Investment Banking Trading And Investment Banking [Member] Service Charges On Deposit Accounts [Member] Deposit Account [Member] Insurance fees and commissions. Insurance Fees and Commissions [Member] Insurance Fees And Commissions [Member] Brokerage fees. Brokerage Fees [Member] Brokerage Fees [Member] Bankcard Fees [Member] Credit Card [Member] Gains on sales of securities available for sale, net. Gains On Sales Of Securities Available For Sale, Net [Member] Gains On Sales Of Securities Available For Sale Net [Member] Other financial services. Other [Member] Other Financial Services [Member] Revenue Scope of ASC 606 Revenue From Contract With Customer Excluding Assessed Tax Revenue (Expense) out of Scope of ASC 606 Revenue Not From Contract With Customer Nominal or face amount used to calculate payments on off-balance sheet financial instruments. Commitments and contingencies disclosure. Commitments and contingencies disclosure. Commitments and Contingencies Disclosure [Table] Commitments And Contingencies Disclosure [Table] Commitments to extend credit for loans (excluding credit card loans). Commitments to extend credit for loans (excluding credit card loans) [Member] Commitments To Extend Credit For Loans Excluding Credit Card Loans [Member] Commitments to extend credit under credit card loans. Commitments to extend credit under credit card loans [Member] Commitments To Extend Credit Under Credit Card Loans [Member] Commercial letters of credit. Commercial letters of credit [Member] Commercial Letters Of Credit [Member] Standby letters of credit [Member] Standby Letters Of Credit [Member] Forward contracts [Member] Forward Contracts [Member] Spot foreign exchange contracts. Spot foreign exchange contracts [Member] Spot Foreign Exchange Contracts [Member] Commitments and Contingencies Disclosure [Line Items] Commitments And Contingencies Disclosure [Line Items] Contract or notional amount of off-balance sheet financial instruments Notional Amount Of Off Balance Sheet Financial Instruments Balance Sheet Location Balance Sheet Location [Axis] Balance Sheet Location Balance Sheet Location [Domain] Accrued expenses and taxes. Accrued Expenses and Taxes [Member] Accrued Expenses And Taxes [Member] ACL for off-balance sheet credit exposures Provision for off-balance sheet credit exposures Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] Hedging Designation Hedging Designation [Axis] Hedging Designation Hedging Designation [Domain] Derivatives not Designated as Hedging Instruments [Member] Nondesignated [Member] Derivatives Designated as Hedging Instruments [Member] Designated As Hedging Instrument [Member] Derivatives, Fair Value [Line Items] Derivatives Fair Value [Line Items] Derivative Assets, Fair Value Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral Derivative Liabilities, Fair Value Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral Derivative Instruments And Hedging Activities Disclosures [Table] Derivative Instruments And Hedging Activities Disclosures [Table] Derivative Instrument Derivative Instrument Risk [Axis] Derivative Contract Derivative Contract Type [Domain] Interest Rate Swap [Member] Interest Rate Swap [Member] Hedging Relationship Derivative Instruments Gain Loss By Hedging Relationship [Axis] Hedging Relationship Hedging Relationship [Domain] Fair Value Hedging [Member] Fair Value Hedging [Member] Interest Rate Floor [Member] Interest Rate Floor [Member] Cash Flow Hedging [Member] Cash Flow Hedging [Member] Interest Expense [Member] Interest Expense [Member] Reduction To Interest Income [Member] Interest Income [Member] Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments And Hedging Activities Disclosures [Line Items] Derivative, notional amount Derivative Notional Amount Number of interest rate swaps Number Of Interest Rate Derivatives Held Unrealized gain (loss) on interest rate cash flow hedges net of tax accumulated other comprehensive income (loss). Unrealized gain reclassification to earnings, remaining term. Interest rate floor termination date. Reclassification from AOCI to interest Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net Interest rate hedging exposure to variability in future cash flows for forecasted transactions, maximum period Maximum Length Of Time Hedged In Interest Rate Cash Flow Hedge1 Net asset fair value Fair Value Net Asset Liability Unrealized gain on terminated interest rate floor remaining in AOCI, pre tax Unrealized Gain Loss On Interest Rate Cash Flow Hedges Pretax Accumulated Other Comprehensive Income Loss Unrealized gain on terminated interest rate floor remaining in AOCI, net of tax Unrealized Gain Loss On Interest Rate Cash Flow Hedges Net Of Tax Accumulated Other Comprehensive Income Loss Unrealized gain reclassification to earnings, remaining term Unrealized Gain Reclassification To Earnings Remaining Term Interest rate floor termination date Interest Rate Floor Termination Date Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table] Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table] Fair value derivatives. Fair value adjustments on derivatives [Member] Fair Value Derivatives [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments Gain Loss [Line Items] Amount of Gain (Loss) Recognized Derivative Gain Loss On Derivative Net Gain (loss) recognized in other comprehensive income included component on derivative before reclassification and tax. Gain (loss) reclassified from accumulated other comprehensive income into earnings included component before tax. (Loss) Gain Recognized in OCI on Derivative (Loss) Gain Recognized in OCI Included Component Gain Loss Recognized In Other Comprehensive Income Included Component On Derivative Before Reclassification And Tax (Loss) Gain Recognized in OCI Excluded Component Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Before Adjustments And Tax Gain (Loss) Reclassified from AOCI into Earnings Gain (Loss) Reclassified from AOCI into Earnings Included Component Gain Loss Reclassified From Accumulated Other Comprehensive Income Into Earnings Included Component Before Tax Loss Reclassified from AOCI into Earnings Excluded Component Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Adjustments Before Tax Termination value of derivatives in net liability position Derivative Net Liability Position Aggregate Fair Value Collateral posted for derivative instruments Collateral Already Posted Aggregate Fair Value Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Measurement Frequency [Axis] Fair Value By Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value Measurement Frequency [Domain] Fair Value Measurement, Recurring [Member] Fair Value Measurements Recurring [Member] Fair Value Hierarchy and NAV Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy and NAV Fair Value Measurements Fair Value Hierarchy [Domain] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] Fair Value Inputs Level1 [Member] Significant Other Observable Inputs (Level 2) [Member] Fair Value Inputs Level2 [Member] Significant Unobservable Inputs (Level 3) [Member] Fair Value Inputs Level3 [Member] Trading Activity [Axis] Trading Activity By Type [Axis] Trading Activity, by Type [Domain] Trading Activity By Type [Domain] Trading - other [Member] Other Trading [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] Available for sale securities Other securities – marketable Other Marketable Securities Fair Value Company-owned life insurance Life Insurance Corporate Or Bank Owned Amount Bank-owned life insurance Bank Owned Life Insurance Derivative Assets, Fair Value Total Investments Fair Value Disclosure Derivative Liabilities, Fair Value Total Commitments Fair Value Disclosure Fair Value, Measurements, Non-Recurring [Member] Fair Value Measurements Nonrecurring [Member] Asset Class [Axis] Fair Value By Asset Class [Axis] Asset Class [Domain] Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Impaired Loans [Member] Impaired loans [Member] Impaired Loans [Member] Collateral dependent assets. Collateral dependent assets [Member] Collateral Dependent Assets [Member] Other Real Estate Owned [Member] Other real estate owned [Member] Other Real Estate Owned [Member] Significant Unobservable Inputs (Level 3) [Member] Assets measured at fair value Assets Fair Value Disclosure Total Gains (Losses) Recognized Fair Value Option Changes In Fair Value Gain Loss1 Loans and leases receivable gross carrying amount included loans held for sale. Savings and demand deposits. Amount of commitments to extend credit for loans to customers. Amount of the contingent obligation under standby letters of credit. Measurement Basis Fair Value By Measurement Basis [Axis] Fair Value Disclosure Item Amounts [Default] Portion At Fair Value Fair Value Disclosure [Member] Fair Value Measurement Fair Value Disclosure Item Amounts [Domain] Estimate of Fair Value Measurement [Member] Estimate Of Fair Value Fair Value Disclosure [Member] Cash and short-term investments Cash Cash Equivalents And Short Term Investments Securities held to maturity (exclusive of allowance for credit losses) Other securities Loans (exclusive of allowance for credit/loan losses) Loans And Leases Receivable Gross Carrying Amount Included Loans Held For Sale Derivatives Derivative Assets Current Demand and savings deposits Savings And Demand Deposits Time deposits Time Deposits Other borrowings Other Borrowings Derivatives Derivative Liabilities Current Commitments to extend credit for loans Commitments To Extend Credit For Loans Commercial letters of credit Letters Of Credit Outstanding Amount Standby letters of credit Standby Letters Of Credit Business acquisition additional number of shares issued or issuable. Lock-up restriction period. Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type Subsequent Event Type [Axis] Subsequent Event Type Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Business Acquisition Business Acquisition [Axis] Business Acquisition, Acquiree Business Acquisition Acquiree [Domain] Tattooed Chef Inc. Tattooed Chef, Inc. [Member] Tattooed Chef Inc [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Number of shares received Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued Additional number of shares receivable Business Acquisition Additional Number Of Shares Issued Or Issuable Lock-up restriction period Lock Up Restriction Period