Receivables [Abstract] Allowance for Credit Losses Allowance for Credit Losses [Text Block] Retirement Benefits [Abstract] Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Amortization of net loss Defined Benefit Plan, Amortization of Gain (Loss) Total net periodic pension income Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Condensed Financial Information Disclosure [Abstract] Condensed Income Statement [Table] Condensed Income Statement [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Parent Company Parent Company [Member] Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Income Operating Income (Loss) [Abstract] Dividends from subsidiary Investment Income, Dividend Income from subsidiary Income (Loss) from Subsidiaries, before Tax Gains on securities transactions, net Debt and Equity Securities, Gain (Loss) Losses on sales of assets, net Gain (Loss) on Disposition of Assets for Financial Service Operations Other interest and income Other Interest and Dividend Income Total Income Operating Income (Loss) Total Expenses Operating Expenses Income before income tax and equity in undistributed earnings of subsidiary Income Before Income Tax Benefit Expense And Equity In Undistributed Over Distributed Earnings Of Subsidiary Income before income tax (benefit) expense and equity in undistributed (over distributed) earnings of subsidiary Income tax benefit Income Tax Expense (Benefit) Income before equity in undistributed earnings of subsidiary Income Before Equity In Undistributed Over Distributed Earnings Of Subsidiary Income before equity in undistributed (over distributed) earnings of subsidiary Equity in undistributed earnings of subsidiary Equity In Undistributed Over Distributed Earnings Of Subsidiary Equity in undistributed (over distributed) earnings of subsidiary Net Income Net Income (Loss) Attributable to Parent Dividends on preferred stock Preferred Stock Dividends, Income Statement Impact Net Income Available to Common Shareholders Net Income (Loss) Available to Common Stockholders, Basic Segment Reporting [Abstract] Schedule of Financial Data for Business Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table] Retirement Plan Tax Status [Axis] Retirement Plan Tax Status [Axis] Retirement Plan Tax Status [Domain] Retirement Plan Tax Status [Domain] Qualified Plan Qualified Plan [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Domain] Defined Benefit Plan, Plan Assets, Category [Domain] Equity securities Defined Benefit Plan, Equity Securities [Member] Corporate bonds Corporate Bond Securities [Member] Mutual funds Mutual Fund [Member] U.S. Treasury securities US Treasury Securities [Member] Cash and money market funds Money Market Funds [Member] U.S. government agency securities US Government Agencies Debt Securities [Member] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] Percent of total investments Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage Fair value of plan assets Defined Benefit Plan, Plan Assets, Amount Equity [Abstract] Other Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net Income Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Equity in undistributed earnings of subsidiary Stock-based compensation Share-based Compensation Net amortization of premiums and accretion of discounts on borrowings Accretion Amortization Of Discounts And Premiums Investments And Borrowings The sum of the periodic adjustments of the differences between securities'/borrowings' face values and purchase prices that are charged against earnings. This is called accretion if the security/borrowing was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by (used in) operations using the indirect method. Losses (gains) on securities transactions, net Losses on sales of assets, net Net change in: Increase (Decrease) in Operating Capital [Abstract] Other assets Increase (Decrease) in Other Operating Assets Accrued expenses and other liabilities Increase (Decrease) in Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Sales Proceeds from Sale of Debt Securities, Available-for-sale Cash and cash equivalents acquired in acquisitions Cash Acquired from Acquisition Capital contributions to subsidiary Payments to Acquire Additional Interest in Subsidiaries 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] Proceeds from issuance of preferred stock, net Proceeds from Issuance of Preferred Stock and Preference Stock Dividends paid to preferred shareholders Payments of Ordinary Dividends, Preferred Stock and Preference Stock Dividends paid to common shareholders Payments of Ordinary Dividends, Common Stock Purchase of common shares to treasury Payments for Repurchase of Common Stock Common stock issued, net Proceeds from Issuance of Common Stock Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net change in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of year Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of year Accounting Policies [Abstract] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Trust preferred securities Other Debt Obligations [Member] Commitments under commercial loans and lines of credit Commercial Loan [Member] Residential mortgage and home equity Residential Mortgage And Home Equity [Member] Residential Mortgage And Home Equity [Member] Automobile Automobile Loan [Member] Unsecured loans at banks Unsecured Loans At Banks [Member] Unsecured Loans at Banks [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Retained Earnings Retained Earnings [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] ASU 2016-16 Accounting Standards Update 2016-16 [Member] ASU 2016-02 Accounting Standards Update 2016-02 [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Forecast Scenario, Forecast [Member] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] PCI Loans Purchased Credit Impaired Loans [Member] Purchased Credit-Impaired Loans [Member] Credit Loss Status [Axis] Credit Loss Status [Axis] Credit Loss Status [Domain] Credit Loss Status [Domain] PCI Loans Financial Asset Acquired with Credit Deterioration [Member] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Commercial and industrial Commercial Portfolio Segment [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Noncumulative Preferred Stock Noncumulative Preferred Stock [Member] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Number of shareholders needed to qualify as a REIT Number of Shareholders Needed to Qualify As a REIT Number of Shareholders Needed to Qualify As a REIT Percentage of preferred stock issued by each REIT - less than Percentage Of Preferred Stock Issued By Each R E I T Percentage of preferred stock issued by each REIT Reserve balance in cash or deposits Cash Reserve Deposit Required and Made Other-than-temporary impairment Debt Securities, Held-to-maturity, Amortized Cost, before Other-than-temporary Impairment Number of days past due of loans to be full or partial charged-off Number Of Days Past Due Loan Assessed For Charge Off Number of days past due for loans that are assessed for full or partial charge-off to the net realizable value. Covered loans Loans and Leases Receivable, Net Reported Amount, Covered Allowance for loan losses Financing Receivable, Allowance for Credit Losses Loans evaluated for impairment Loans Evaluated For Impairment Materiality Threshold The threshold amount above which loans are evaluated for impairment Number of days past due of loans to be fully charged-off Number Of Days Past Due Loan Charged Off Number of days past due loans are charged off in full. Premises and equipment, useful life Property, Plant and Equipment, Useful Life OREO and other repossessed assets total Repossessed Assets Foreclosed residential real estate properties Real Estate Acquired Through Foreclosure Properties for which formal foreclosure proceedings are in process Mortgage Loans in Process of Foreclosure, Amount Anti-dilutive common stock options and warrants (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Stock issued (in shares) Stock Issued During Period, Shares, New Issues Reclassification due to the adoption of an ASU Cumulative Effect of New Accounting Principle in Period of Adoption Right-of-use asset Operating Lease, Right-of-Use Asset Lease obligations Operating Lease, Liability Risk-based capital actual, ratio Capital to Risk Weighted Assets Tier 1 risk-based capital actual, ratio Tier One Risk Based Capital to Risk Weighted Assets Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Sale Leaseback Transaction, Description [Axis] Sale Leaseback Transaction, Description [Axis] Sale Leaseback Transaction, Name [Domain] Sale Leaseback Transaction, Name [Domain] February sale leaseback agreement February Sale Leaseback Agreement [Member] February Sale Leaseback Agreement [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent event Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Number of properties Number of Real Estate Properties Number of corporate locations Number of Corporate Locations Number of Corporate Locations Number of branches Number of Branches Number of Branches DC Solar tax credit benefits Renewable Resource Tax Credit Investments Renewable Resource Tax Credit Investments Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Commercial real estate Commercial Real Estate Portfolio Segment [Member] Residential mortgage Residential Portfolio Segment [Member] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Number of Contracts Financing Receivable, Modifications, Subsequent Default, Number of Contracts Recorded Investment Financing Receivable, Modifications, Subsequent Default, Recorded Investment Banking and Thrift [Abstract] Time deposits, $250,000 or more Time Deposits, $250,000 or More Time Deposits, $250,000 or More Interest expense on time deposits of $250 thousand or more Interest Expense, Time Deposits, $250,000 or More Interest Expense, Time Deposits, $250,000 or More Deposits from certain directors, executive officers and their affiliates Related Party Deposit Liabilities Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Consumer loans Consumer Portfolio Segment [Member] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Domain] Class of Financing Receivable, Type [Domain] Commercial real estate Real Estate Loan [Member] Construction Construction Loans [Member] Home equity Home Equity Loan [Member] Automobile Other consumer Other Consumer Loan [Member] Other Consumer Loan [Member] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Domain] Financing Receivables, Period Past Due [Domain] 30-59 Days Past Due Loans Financing Receivables, 30 to 59 Days Past Due [Member] 60-89 Days Past Due Loans Financing Receivables, 60 to 89 Days Past Due [Member] Accruing Loans 90 Days Or More Past Due Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, Past Due [Line Items] Past Due Loans Financing Receivable, Recorded Investment, Past Due Non-Accrual Loans Financing Receivable, Recorded Investment, Nonaccrual Status Total Past Due Loans Financing Receivable, Recorded Investment, Past Due And Nonaccrual Status Financing Receivable, Recorded Investment, Past Due And Nonaccrual Status Current Non-PCI Loans Financing Receivable Recorded Investment Current Non P C I Loans Financing Receivable Recorded Investment Current Non PCI Loans. Total Non-PCI Loans Past Due Non Accrual And Current Non Pci Loans Past Due Non Accrual And Current Non PCI Loans. Commitments and Contingencies Disclosure [Abstract] Minimum Aggregate Lease Payments Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Summary of Financial Instruments with Off-Balance Sheet Risk Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block] Consolidated Statements of Financial Condition Related to Fair Value of Derivative Financial Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Gains (Losses) Related to Interest Rate Derivatives Designated as Hedges of Cash Flows Derivative Instruments, Gain (Loss) [Table Text Block] Gains (Losses) Related to Interest Rate Derivatives Designated as Hedges of Fair Value Schedule of Interest Rate Derivatives [Table Text Block] Interest Rate Derivatives Designated as Hedges Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Net (Losses) Gains Related to Derivative Instruments Not Designated as Hedging Instruments Schedule Of Gains Losses Income Related To Derivative Instruments Not Designated As Hedging Instruments [Table Text Block] Schedule of gains (losses) income related to derivative instruments not designated as hedging instruments Business Business Description and Accounting Policies [Text Block] Basis of Presentation Basis of Presentation and Significant Accounting Policies [Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Investment Securities Marketable Securities, Policy [Policy Text Block] Loans Held for Sale Finance, Loan and Lease Receivables, Held-for-sale, Policy [Policy Text Block] Loans and Loan Fees Finance, Loan and Lease Receivables, Held-for-investment, Policy [Policy Text Block] Purchased Credit-Impaired Loans (Including Covered Loans) Deteriorated Loans Transferred in, Policy [Policy Text Block] Allowance for Credit Losses Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Premises and Equipment, Net Property, Plant and Equipment, Policy [Policy Text Block] Bank Owned Life Insurance Life Insurance, Corporate or Bank Owned [Text Block] Other Real Estate Owned Finance, Loan and Lease Receivables, Held for Investments, Foreclosed Assets Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Other Intangible Assets Intangible Assets, Finite-Lived, Policy [Policy Text Block] Loan Servicing Rights Transfers and Servicing of Financial Assets, Servicing of Financial Assets, Policy [Policy Text Block] Stock-Based Compensation Compensation Related Costs, Policy [Policy Text Block] Fair Value Measurements Fair Value of Financial Instruments, Policy [Policy Text Block] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Comprehensive Income Comprehensive Income, Policy [Policy Text Block] Earnings Per Common Share Earnings Per Share, Policy [Policy Text Block] Preferred and Common Stock Dividends Preferred And Common Dividends Policy [Policy Text Block] Disclosure of accounting policy Preferred And Common Dividends. Treasury Stock Treasury Stock Policy Policy [Policy Text Block] Disclosure of accounting policy for Treasury stock. Derivative Instruments and Hedging Activities Derivatives, Policy [Policy Text Block] New Authoritative Accounting Guidance New Accounting Pronouncements, Policy [Policy Text Block] Consumer Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Number of Contracts Financing Receivable, Modifications, Number of Contracts Pre-Modification Outstanding Recorded Investment Financing Receivable, Modifications, Pre-Modification Recorded Investment Post-Modification Outstanding Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment Income Statement [Abstract] Statement [Table] Statement [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Trust and Investment Services Investment Advisory, Management and Administrative Service [Member] Deposit Account Deposit Account [Member] Statement [Line Items] Statement [Line Items] Interest Income Interest Income (Expense), Net [Abstract] Interest and fees on loans Interest and Fee Income, Loans and Leases Interest and dividends on 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 Interest on other short-term investments Interest On Federal Funds Sold And Other Short Term Investments Interest income on federal funds sold and other short-term investments, including interest bearing deposits with banks. Federal funds sold represent the excess federal funds held by one commercial bank which it lends to another commercial bank, usually at an agreed-upon (federal funds) rate of interest. Such loans generally are of short-duration (overnight). Total interest income Interest and Dividend Income, Operating Interest Expense Interest Expense [Abstract] Interest on deposits: Interest Expense, Domestic Deposits [Abstract] Savings, NOW and money market Interest Expense, NOW Accounts, Money Market Accounts, and Savings Deposits Time Interest Expense, Time Deposits Interest on short-term borrowings Interest Expense, Short-term Borrowings Interest on long-term borrowings and junior subordinated debentures Interest Expense, Long-term Debt 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 Non-Interest Income Noninterest Income [Abstract] Services Revenue from Contract with Customer, Including Assessed Tax Insurance commissions Insurance Commissions and Fees (Losses) gains on securities transactions, net Fees from loan servicing Servicing Fees, Net1 Servicing Fees, Net1 Gains on sales of loans, net Gain (Loss) on Sales of Loans, Net Bank owned life insurance Bank Owned Life Insurance Income Other Noninterest Income, Other Operating Income Total non-interest income Noninterest Income Non-Interest Expense Noninterest Expense [Abstract] Salary and employee benefits expense Labor and Related Expense Net occupancy and equipment expense Occupancy, Net FDIC insurance assessment Federal Deposit Insurance Corporation Premium Expense Amortization of other intangible assets Amortization of Intangible Assets Professional and legal fees Professional And Legal Fees Fees charged for services from professionals, such as lawyers and accountants, and legal fees equal to the amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. Amortization of tax credit investments Investment Tax Credit, Amortization Investment Tax Credit, Amortization Telecommunication expenses Communications and Information Technology Other Other Noninterest Expense Total non-interest expense Noninterest Expense Income Before Income Taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax expense Earnings Per Common Share: Earnings Per Share [Abstract] Basic (in usd per share) Earnings Per Share, Basic Diluted (in usd per share) Earnings Per Share, Diluted Cash dividends declared per common share (in usd per share) Common Stock, Dividends, Per Share, Declared Weighted Average Number of Common Shares Outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Offsetting [Abstract] Gain Loss On Fair Value Hedges Recognized In Earnings [Table] Gain Loss On Fair Value Hedges Recognized In Earnings [Table] Gain Loss On Fair Value Hedges Recognized In Earnings [Table] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Fair value hedge Fair Value Hedging [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate swaps Interest Rate Swap [Member] Interest rate caps and swaps Interest Rate Contract [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Derivatives designated as hedging instruments Designated as Hedging Instrument [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Interest income Interest Income [Member] Interest expense Interest Expense [Member] Gain Loss On Fair Value Hedges Recognized In Earnings [Line Items] Gain Loss On Fair Value Hedges Recognized In Earnings [Line Items] Gain Loss On Fair Value Hedges Recognized In Earnings [Line Items] Gains (losses) included in the consolidated statements of income Derivative, Gain (Loss) on Derivative, Net Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] USAmeriBancorp, Inc. USAmeriBancorp, Inc. [Member] USAmeriBancorp, Inc. [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Shares outstanding at beginning of year (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Shares outstanding from USAB (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Acquired In Business Combination Share-based Compensation Arrangement by Share-based Payment Award, Options, Acquired In Business Combination Shares exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Shares forfeited or expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Shares outstanding at end of year (in shares) Shares exercisable at year-end (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Weighted average exercise price, outstanding at beginning of year (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted average exercise price, outstanding shares from USAB (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Acquired In Business Combination, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Acquired In Business Combination, Weighted Average Exercise Price Weighted average exercise price, exercised (in usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted average exercise price, forfeited or expired (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Weighted average exercise price, outstanding at end of year (in usd per share) Weighted average exercise price, exercisable at year-end (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Income Tax Disclosure [Abstract] Current expense: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Current Federal Tax Expense (Benefit) State Current State and Local Tax Expense (Benefit) Total current expense Current Income Tax Expense (Benefit) Deferred (benefit) expense: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) State Deferred State and Local Income Tax Expense (Benefit) Total deferred expense Deferred Income Tax Expense (Benefit) Income tax expense Summary of Allowance for Credit Losses Schedule Of Allowance For Credit Losses [Table Text Block] Schedule Of Allowance For Credit Losses [Table Text Block] Summary of Provision for Credit Losses Schedule Of Provision For Credit Losses [Table Text Block] Schedule of Provision for Credit Losses Table Text Block Summary of Activity in Allowance for Loan Losses Allowance for Credit Losses on Financing Receivables [Table Text Block] Summary of Allocation of Allowance for Loan Losses and Related Loans by Loan Portfolio Segment Disaggregated Based on Impairment Methodology Allocation Of Allowance For Loan Losses Disaggregated Based On Impairment Methodology [Table Text Block] Allocation of the Allowance for Loan Losses Disaggregated Based on the Impairment Methodology Summary of Income Tax Expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Summary of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Summary of Income Tax Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Summary of Reconciliation of Gross Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Type Document Type 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 Amendment Flag Amendment Flag Entity Registrant Name Entity Registrant Name Entity CIK Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Season Issuer Entity Well-known Seasoned Issuer Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Entity Filer Category Entity Filer Category Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Public Float Entity Public Float Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Data (Unaudited) Quarterly Financial Information [Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Long-term borrowings Long-term Debt [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] FHLB advances, net Long-term Federal Home Loan Bank Advances Subordinated debt, net Subordinated Debt Securities sold under agreements to repurchase Securities Sold under Agreements to Repurchase Total long-term borrowings Long-term Debt Unamortized prepayment penalties and other purchase accounting adjustments Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Unamortized Prepayment And Penalties Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Unamortized Prepayment And Penalties Deferred issuance costs Debt Issuance Costs, Net Common Stock [Table] Common Stock [Table] Common Stock [Table] Common Stock Common Stock [Member] Series A Preferred Stock Series A Preferred Stock [Member] Series B Preferred Stock Series B Preferred Stock [Member] Dividend Reinvestment Plan Dividend Reinvestment Plan [Member] Dividend Reinvestment Plan [Member] Warrants Warrants Issued [Member] Warrants Issued [Member] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] U.S. Treasury Warrants U.S. Treasury Warrants [Member] U.S. Treasury Warrants [Member] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Repurchase Plan 2007 Common Stock Repurchase Program [Member] 2007 Common Stock Repurchase Program [Member] Other Stock Repurchases Stock Repurchases Related To Employee Stock Plans [Member] Stock Repurchases Related To Employee Stock Plans [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Common Stock [Line Items] Common Stock [Line Items] Common Stock [Line Items] Stock issued (in shares) Net proceeds from issuance of common stock Maximum voluntary optional cash payments made by shareholders to purchase common shares Maximum Voluntary Optional Cash Payments Made By Shareholders To Purchase Common Shares Maximum Voluntary Optional Cash Payments Made By Shareholders To Purchase Common Shares Number of shares reissued from treasury stock (in shares) Stock Issued During Period, Shares, Treasury Stock Reissued Proceeds from treasury stock reissued Proceeds from Sale of Treasury Stock Warrant exercise period Warrant Exercise Period Warrant Exercise Period Number of common stock issued upon exercise of warrant (in shares) Number Of Common Stock Issued Upon Exercise Of Warrant Number Of Common Stock Issued Upon Exercise Of Warrant Exercise price of warrant (in usd per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Value of warrants to purchase common stock Warrants and Rights Outstanding Amount of shares each warrant entitles buyer to purchase (in shares) Amount Of Share Each Warrant Entitles Buyer To Purchase amount of share each warrant entitles buyer to purchase. Amount authorized under share repurchase program Stock Repurchase Program, Authorized Amount Number of shares repurchased (in shares) Treasury Stock, Shares, Acquired Average price of shares purchased (in usd per share) Treasury Stock Acquired, Average Cost Per Share Liquidation preference per share (in usd per share) Preferred Stock, Liquidation Preference Per Share Fixed dividend rate per annum Preferred Stock, Dividend Rate, Percentage Spread on variable dividend rate per annum Preferred Stock, Dividend Rate, Spread On Variable Rate Preferred Stock, Dividend Rate, Spread On Variable Rate Proceeds from issuance of preferred stock, net of issuance costs Proceeds From Issuance Of Preferred Stock And Preference Stock, Net Of Issuance Costs Proceeds From Issuance Of Preferred Stock And Preference Stock, Net Of Issuance Costs Affordable Housing Tax Credit Investments, Other Tax Credit Investments, and Related Unfunded Commitments Affordable Housing Tax Credit Investments, Other Tax Credit Investments, and Related Unfunded Commitments [Table Text Block] Affordable Housing Tax Credit Investments, Other Tax Credit Investments, and Related Unfunded Commitments [Table Text Block] Affordable Housing Tax Credit Investments and Other Tax Credit Investments Affordable Housing Tax Credit Investments and Other Tax Credit Investments [Table Text Block] Affordable Housing Tax Credit Investments and Other Tax Credit Investments [Table Text Block] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Unrealized Gains and Losses on AFS Securities Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Non-credit Impairment Losses on Securities Accumulated Other-than-Temporary Impairment Attributable to Parent [Member] Unrealized Gains and Losses on Derivatives Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Net (losses) gains arising during the period Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] Amortization of prior service credit (cost ) Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Amortization of net loss Accumulated Defined Benefit Plans Adjustment, Net Transition Attributable to Parent [Member] Net change Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Before reclassification, before tax OCI, before Reclassifications, before Tax, Attributable to Parent Before reclassification, tax Other Comprehensive Income (Loss) before Reclassifications, Tax Before reclassification, net of tax OCI, before Reclassifications, Net of Tax, Attributable to Parent Reclassification adjustment before tax Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Reclassification, tax Reclassification from AOCI, Current Period, Tax Reclassification, net of tax Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Net change before tax Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Net change, tax Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Other comprehensive (loss) income, net Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Statement of Stockholders' Equity [Abstract] Preferred Stock Preferred Stock [Member] Surplus Additional Paid-in Capital [Member] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Treasury Stock Treasury Stock [Member] Common Stock ASU 2016-01 Accounting Standards Update 2016-01 [Member] ASU 2017-12 Accounting Standards Update 2017-12 [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 Beginning balance, adjusted Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance Net income Reclassification due to the adoption of ASU No. 2018-02 Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings, Tax Effect Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings, Tax Effect Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax Stock issued Stock Issued During Period, Value, New Issues Cash dividends declared on preferred stock Dividends, Preferred Stock, Cash Cash dividends declared on common stock Dividends, Common Stock, Cash Effect of stock incentive plan, net (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Effect of stock incentive plan, net Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Reclassification/adjustment due to the adoption of an ASU Ending balance Ending balance (in shares) Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land Land [Member] Buildings Building [Member] Leasehold improvements Leasehold Improvements [Member] Furniture and equipment Furniture And Equipment [Member] Furniture and equipment [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Premises and equipment, gross Property, Plant and Equipment, Gross Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Total premises and equipment, net Property, Plant and Equipment, Net Depreciation and amortization Depreciation, Depletion and Amortization Derivative [Table] Derivative [Table] Derivative [Line Items] Derivative [Line Items] Carrying Amount of the Hedged Asset Hedged Asset, Fair Value Hedge Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) Deferred tax assets: Deferred Tax Assets, Gross [Abstract] Allowance for loan losses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses Depreciation Deferred Tax Assets, Property, Plant and Equipment Employee benefits Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits Investment securities, including other-than-temporary impairment losses Deferred Tax Assets Investment Securities Including Other Than Temporary Impairment Losses Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from investments (excludes investments in subsidiaries and equity method investments) and other-than-temporary impairment losses. Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, State and Local Purchase accounting Deferred Tax Assets Purchase Accounting Amount of deferred tax asset attributable to taxable temporary differences arising from various items related to business combinations. Capital loss carryforward Deferred Tax Assets, Capital Loss Carryforwards Other Deferred Tax Assets, Other Total deferred tax assets Deferred Tax Assets, Gross Deferred tax liabilities: Deferred Tax Liabilities, Gross [Abstract] Pension plans Deferred Tax Liabilities Pension Plan Deferred Tax Liabilities Pension Plan Other investments Deferred Tax Liabilities Other Investments Deferred tax liability attributable to taxable temporary differences arising from carrying basis differences of non-marketable investments (excludes investments in subsidiaries and equity method investments). Deferred income Deferred Tax Liabilities, Tax Deferred Income Core deposit intangibles Deferred Tax Liabilities, Intangible Assets Other Deferred Tax Liabilities, Other Total deferred tax liabilities Deferred Tax Liabilities, Gross Valuation Allowance Deferred Tax Assets, Valuation Allowance Net deferred tax asset (included in other assets) Deferred Tax Assets, Net of Valuation Allowance Regulatory and Capital Requirements Regulatory And Capital Requirements [Text Block] Regulatory And Capital Requirements [Text Block] Junior Subordinated Debentures Issued to Capital Trusts Subordinated Borrowings Disclosure [Text Block] Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Debt Security Category [Axis] Debt Security Category [Axis] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Investment securities held to maturity Held-to-maturity Securities [Member] Investment securities available for sale Available-for-sale Securities [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Assets acquired: Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Investment securities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities Loans Loans and Leases Receivable, Net Amount Premises and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Bank owned life insurance Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Bank Owned Life Insurance Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Bank Owned Life Insurance Accrued interest receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Goodwill Goodwill Other intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Other assets: Other Assets [Abstract] Deferred taxes Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Other real estate owned Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Real Estate Owned Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Real Estate Owned FHLB and FRB stock Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, FHLB and FRB Stock Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, FHLB and FRB Stock Tax credit investments Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Investments Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Investments Other Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Total other assets Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets, Total Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets, Total Total assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Including Goodwill Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Including Goodwill Liabilities assumed: Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract] Deposits: Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities [Abstract] Non-interest bearing Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noninterest-bearing Deposit Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noninterest-bearing Deposit Liabilities Savings, NOW and money market Savings Now And Money Market The aggregate amount of all domestic and foreign interest bearing savings, NOW and money market deposit liabilities with no stated maturity dates. Time Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Time Deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Time Deposits Total deposits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits, Total Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits, Total Short-term borrowings Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Short-term Borrowings Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Short-term Borrowings Long-term borrowings Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Long-term Borrowings Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Long-term Borrowings Junior subordinated debentures issued to capital trusts Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Junior Subordinated Debentures Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Junior Subordinated Debentures Issued to Capital Trusts Accrued expenses and other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Total liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Common stock issued in acquisition Business Acquisition, Consideration, Fair Value Business Acquisition, Consideration, Fair Value Summary of Valley's Financial Instruments that are Eligible for Offset, Assets Offsetting Assets [Table Text Block] Summary of Valley's Financial Instruments that are Eligible for Offset, Liabilities Offsetting Liabilities [Table Text Block] Provision for loan losses Provision for Loan and Lease Losses Provision for unfunded letters of credit Provision For Unfunded Letters Of Credit Provision charged for the period based on estimated losses related to unfunded letters of credit. Total provision for credit losses Premises and Equipment, Net Property, Plant and Equipment Disclosure [Text Block] Allowance for unfunded letters of credit Allowance For Unfunded Letters Of Credit Allowance for Unfunded Letters Of Credit Total allowance for credit losses Allowance For Credit Losses Allowance for loan and unfunded letters of credit losses. Summary of Quarterly Financial Data Quarterly Financial Information [Table Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Capital loss carryforward Capital Loss Carryforward [Member] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Federal Domestic Tax Authority [Member] Obligations of states and state agencies State and Local Jurisdiction [Member] Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Line Items] Tax benefit related to effects of TCJA Tax Cuts and Jobs Act of 2017, Income Tax Expense (Benefit) Tax Cuts and Jobs Act of 2017, Income Tax Expense (Benefit) Operating loss carryforwards Operating Loss Carryforwards Capital loss carryforwards Tax Credit Carryforward, Amount Statutory federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Uncertain tax position, accrued interest Unrecognized Tax Benefits, Interest on Income Taxes Accrued Investments, Debt and Equity Securities [Abstract] Schedule of Held-to-Maturity Securities [Table] Debt Securities, Held-to-maturity [Table] Municipal bonds Municipal Bonds [Member] Total obligations of states and political subdivisions US States and Political Subdivisions Debt Securities [Member] Residential mortgage-backed securities Residential Mortgage Backed Securities [Member] Corporate and other debt securities Corporate Debt Securities [Member] Schedule of Held-to-Maturity Securities [Line Items] Schedule of Held-to-maturity Securities [Line Items] 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 Fair Value Debt Securities, Held-to-maturity, Fair Value Schedule of Actual Capital Positions and Ratios under Banking Regulations Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Commercial and Industrial Commercial Real Estate Residential Mortgage Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Allowance for loan losses: Financing Receivable, Allowance for Credit Losses [Roll Forward] Beginning balance Loans charged-off Financing Receivable, Allowance for Credit Losses, Write-downs Charged-off loans recovered Financing Receivable, Allowance for Credit Losses, Recovery Net (charge-offs) recoveries Allowance for Loan and Lease Losses Write-offs, Net Ending balance Fair Value Disclosures [Abstract] Schedule of Guarantor Obligations [Table] Schedule of Guarantor Obligations [Table] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Number of available for sale securities Available-For-Sale Securities, Number Of Securities Available-For-Sale Securities, Number Of Securities Collateral dependent loan charge-offs Impaired Collateral Dependent Loans Charge Offs This amount represents the direct charge-off the allowance for loan losses related to the collateral dependent impaired loans. Collateral dependent impaired loans, recorded investment Collateral Dependent Impaired Loans Carrying Value Collateral Dependent Impaired Loans Carrying Value Specific valuation allowance allocations Impaired Loans Specific Valuation Allowance Allocation Specific valuation for loan losses related to impaired loans which are evaluated for impairment on an individual basis. Reported net carrying amount of impaired loans Impaired Loans Reported Net Carrying Value Impaired loans, reported net carrying value. Valuation of loan servicing rights, prepayment rate Fair Value Unobservable Inputs Quantitative Information For Assets Measured On Nonrecurring Basis Loan Servicing Rights Prepayment Rate Fair value, unobservable inputs, quantitative information for assets measured on non-recurring basis, loan servicing rights prepayment rate. Valuation of loan servicing rights, discount rate Fair Value Unobservable Inputs Quantitative Information For Assets Measured On Nonrecurring Basis Loan Servicing Rights Discount Rate Fair value, unobservable inputs, quantitative information for assets measured on non-recurring basis, loan servicing rights discount rate. Net impairment (recovery of impairment) on loan servicing rights Mortgage Servicing Rights (MSR) Impairment (Recovery) Foreclosed assets measured at fair value upon initial recognition Foreclosed Assets Measured At Fair Value Certain foreclosed assets (consisting of other real estate owned and other repossessed assets), upon initial recognition and transfer from loans, are re-measured and reported at fair value through a charge-off to the allowance for loan losses based upon the fair value of the foreclosed assets. The fair value of a foreclosed asset, upon initial recognition, is typically estimated using Level 3 inputs, consisting of an appraisal that is significantly adjusted based on customized discounting criteria. Allowance for loan losses, charge-offs Allowance For Covered Loan Losses Net Charge Offs Allowance For Covered Loan Losses Net Charge Offs Loss due to re-measurement of repossessed assets Loss Due To Remeasurement Of Repossessed Asset At Fair Value This element represents a loss due to the re-measurement of repossessed asset at fair value subsequent to initial recognition. 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] Legal Entity [Axis] Entity [Domain] Entity [Domain] Valley National Bank Valley National Bank [Member] Valley National Bank [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Total Risk-based Capital Capital [Abstract] Risk-based capital actual, amount Capital Risk-based capital minimum capital requirements, amount Capital Required for Capital Adequacy Risk-based capital minimum capital requirements, ratio Capital Required for Capital Adequacy to Risk Weighted Assets Risk-based capital to be well capitalized under prompt corrective action provision, amount Capital Required to be Well Capitalized Risk-based capital to be well capitalized under prompt corrective action provision, ratio Capital Required to be Well Capitalized to Risk Weighted Assets Common Equity Tier 1 Capital Tier One Common Equity Capital [Abstract] Tier One Common Equity Capital [Abstract] Common equity tier 1 capital, amount Tier One Common Equity Capital Tier One Common Equity Capital Common equity tier 1 capital, ratio Tier One Common Equity Capital To Risk Weighted Assets Tier One Common Equity Capital To Risk Weighted Assets Common equity tier 1 capital Tier One Common Equity Capital Required For Capital Adequacy Tier One Common Equity Capital Required For Capital Adequacy Common equity tier 1 capital minimum capital requirements, ratio Tier One Common Equity Capital Required For Capital Adequacy To Risk Weighted Assets Tier One Common Equity Capital Required For Capital Adequacy To Risk Weighted Assets Common equity tier 1 capital to be well capitalized under prompt corrective action provision, amount Tier One Common Equity Capital Required To Be Well Capitalized Tier One Common Equity Capital Required To Be Well Capitalized Common equity tier 1 capital to be well capitalized under prompt corrective action provision, ratio Tier One Common Equity Capital Required To Be Well Capitalized To Risk Weighted Assets Tier One Common Equity Capital Required To Be Well Capitalized To Risk Weighted Assets Tier 1 Risk-based Capital Tier One Risk Based Capital [Abstract] Tier 1 risk-based capital actual, amount Tier One Risk Based Capital Tier 1 risk-based capital minimum capital requirements, amount Tier One Risk Based Capital Required for Capital Adequacy Tier 1 risk-based capital minimum capital requirements, ratio Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Tier 1 risk-based capital to be well capitalized under prompt corrective action provision, amount Tier One Risk Based Capital Required to be Well Capitalized Tier 1 risk-based capital to be well capitalized under prompt corrective action provision, ratio Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets Tier 1 Leverage Capital Tier One Leverage Capital [Abstract] Tier 1 leverage capital actual, amount Tier One Leverage Capital Tier 1 leverage capital actual, ratio Tier One Leverage Capital to Average Assets Tier 1 leverage capital minimum capital requirements, amount Tier One Leverage Capital Required for Capital Adequacy Tier 1 leverage capital minimum capital requirements, ratio Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier 1 leverage capital to be well capitalized under prompt corrective action provision, amount Tier One Leverage Capital Required to be Well Capitalized Tier 1 leverage capital to be well capitalized under prompt corrective action provision, ratio Tier One Leverage Capital Required to be Well Capitalized to Average Assets Business Segments Segment Reporting Disclosure [Text Block] Tax Credit Investments Income Tax Disclosure [Text Block] Federal income tax at expected statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount State income tax expense, net of federal tax effect Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Tax-exempt interest, net of interest incurred to carry tax-exempt securities Effective Income Tax Rate Reconciliation, Tax Exempt Income, Other Than Life Insurance, Amount Effective Income Tax Rate Reconciliation, Tax Exempt Income, Other Than Life Insurance, Amount Bank owned life insurance Effective Income Tax Rate Reconciliation, Tax Exempt Income, Life Insurance, Amount Effective Income Tax Rate Reconciliation, Tax Exempt Income, Life Insurance, Amount Tax credits from securities and other investments Effective Income Tax Rate Reconciliation, Tax Credit, Amount FDIC insurance premium Effective Income Tax Rate Reconciliation, FDIC Insurance Premium, Amount Effective Income Tax Rate Reconciliation, FDIC Insurance Premium, Amount Impact of the Tax Act Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Amount Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Amount Other, net Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Equity securities Equity Securities [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Total investment securities available for sale Debt Securities, Available-for-sale, Amortized Cost Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Fair Value Debt Securities, Available-for-sale Statement of Financial Position [Abstract] Preferred Class A Preferred Class A [Member] Preferred Class B Preferred Class B [Member] Investment securities held to maturity Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, par value (in dollars per share) Preferred Stock, No Par Value Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, par value (in dollars per share) Common Stock, No Par Value Common stock, shares authorized (in shares) Common Stock, Shares Authorized Treasury stock, shares (in shares) Treasury Stock, Shares 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 time deposits Time Deposits Nonqualified Plan Nonqualified Plan [Member] Projected benefit obligation Defined Benefit Plan, Benefit Obligation Accumulated benefit obligation Defined Benefit Plan, Accumulated Benefit Obligation Net income available to common shareholders Basic weighted-average number of common shares outstanding (in shares) Plus: Common stock equivalents (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Diluted weighted-average number of common shares outstanding (in shares) Earnings per common share: Earnings Per Common Share [Abstract] Earnings Per Common Share [Abstract] Derivatives And Hedging Activities [Table] Derivatives And Hedging Activities [Table] Derivatives And Hedging Activities [Table] Interest rate caps and swaps Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Repurchase agreements Repurchase Agreements [Member] Derivatives And Hedging Activities [Line Items] Derivatives And Hedging Activities [Line Items] Derivatives And Hedging Activities [Line Items] Offsetting Assets Derivative Asset, Fair Value, Amount Offset Against Collateral [Abstract] Gross Amounts Recognized Derivative Asset, Fair Value, Gross Asset Gross Amounts Offset Derivative Asset, Fair Value, Gross Liability Net Amounts Presented Derivative Asset Gross Amounts Not Offset, Financial Instruments Derivative, Collateral, Obligation to Return Securities Gross Amounts Not Offset, Cash Collateral Derivative, Collateral, Obligation to Return Cash Net Amount Derivative Asset, Fair Value, Amount Offset Against Collateral Offsetting Liabilities Offsetting Derivative Liabilities [Abstract] Gross Amounts Recognized Derivative Liability, Fair Value, Gross Liability Gross Amounts Offset Derivative Liability, Fair Value, Gross Asset Net Amounts Presented Derivative Liability Gross Amounts Not Offset, Financial Instruments Derivative, Collateral, Right to Reclaim Securities Gross Amounts Not Offset, Cash Collateral Derivative, Collateral, Right to Reclaim Cash Net Amount Derivative Liability, Fair Value, Amount Offset Against Collateral Offsetting Liabilities Securities Sold under Agreements to Repurchase, Amount Offset Against Collateral [Abstract] Gross Amounts Recognized Securities Sold under Agreements to Repurchase, Gross Gross Amounts Offset Securities Sold under Agreements to Repurchase, Asset Total long-term securities sold under agreements to repurchase Gross Amounts Not Offset, Financial Instruments Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities Gross Amounts Not Offset, Cash Collateral Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Cash Net Amount Securities Sold under Agreements to Repurchase, Amount Offset Against Collateral Offsetting Liabilities Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Amount Offset Against Collateral [Abstract] Gross Amounts Recognized Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Gross Gross Amounts Offset Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Asset Net Amounts Presented Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned Gross Amounts Not Offset, Financial Instruments Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Collateral, Right to Reclaim Securities Gross Amounts Not Offset, Cash Collateral Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Collateral, Right to Reclaim Cash Net Amount Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Amount Offset Against Collateral Components of Premises and Equipment, Net Property, Plant and Equipment [Table Text Block] Non-PCI Loans Non Purchased Credit Impaired Loans [Member] Non Purchased Credit Impaired Loans [Member] 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 Substandard [Member] Doubtful Doubtful [Member] Total Non-PCI Loans Loans Classified By Internally Assigned Risk Rating Loans classified by internally assigned risk rating. Fair Value Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract] Less than Twelve Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months More than Twelve Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Total Debt Securities, Available-for-sale, Unrealized Loss Position Unrealized Losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] Less than Twelve Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss More than Twelve Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss CNL Bancshares, Inc. CNL Bancshares, Inc [Member] CNL Bancshares, Inc [Member] FHLB Federal Home Loan Bank Advances [Member] Subordinated notes Subordinated Notes [Member] Subordinated Notes [Member] Subordinated notes due September 2023 Subordinated Notes Due September 2023 [Member] Subordinated Notes Due September 2023 [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Securities sold under agreements to repurchase Securities Sold under Agreements to Repurchase [Member] Weighted average interest rate for short-term borrowings Short-term Debt, Weighted Average Interest Rate, at Point in Time Prepaid long-term FHLB advances Prepaid Long-term Federal Home Loan Bank Advances Prepaid Long-term Federal Home Loan Bank Advances Prepaid long-term FHLB stock Prepaid Long-term Federal Home Loan Bank Stock Prepaid Long-term Federal Home Loan Bank Stock Callable FHLB advances interest rate Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Interest Rate at Period End FHLB advances Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances Callable FHLB advances adjusted interest rate Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Adjusted Interest Rate at Period End Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Adjusted Interest Rate at Period End Prepayment penalties paid to FHLB Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Repayment and Penalties Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Weighted average interest rate for long-term borrowings Long-term Debt, Weighted Average Interest Rate, at Point in Time Subordinated notes Subordinated notes, interest rate Subordinated Borrowing, Interest Rate Net carrying value of subordinated debentures Subordinated Long-term Debt, Noncurrent Notional amount of terminated derivative Terminated Derivative, Notional Amount Terminated Derivative, Notional Amount Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Fair value of securities Pledged Assets Separately Reported, Securities Pledged as Collateral, at Fair Value Business Combinations Business Combination Disclosure [Text Block] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Core deposits Core Deposits [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Alabama ALABAMA Assets Deposits Number of branches acquired Number of Businesses Acquired Conversion ratio for shares issued Business Acquisition, Equity Interest Issued Or Issuable, Share Conversion Ratio Business Acquisition, Equity Interest Issued Or Issuable, Share Conversion Ratio Total consideration Shares issued in connection with acquisition Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Merger expenses Payments for Merger Related Costs Goodwill from business combinations Goodwill, Acquired During Period Estimated useful life Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 2019 Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months 2020 Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Two 2021 Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Three 2022 Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Four Total long-term FHLB advances Advances from Federal Home Loan Banks Discount rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Expected long-term return on plan assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Carrying Amount Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Obligations of states and political subdivisions Fair Value Assets Measured On Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Cash and due from banks Cash and Cash Equivalents, Fair Value Disclosure Interest bearing deposits with banks Interest-bearing Deposits in Banks and Other Financial Institutions Net loans Loans Receivable, Fair Value Disclosure Accrued interest receivable Accrued Investment Income Receivable Federal Reserve Bank and Federal Home Loan Bank stock Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Deposits without stated maturities Deposits Without Stated Maturities Fair Value Disclosure This item represents the aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, and negotiable orders of withdrawal (NOW). Deposits with stated maturities Short-term borrowings Short Term Borrowings Fair Value Disclosure Short term borrowings fair value disclosure Long-term borrowings Long Term Borrowings Fair Value Disclosure Long term borrowings fair value disclosure Junior subordinated debentures issued to capital trusts Subordinated Debt Obligations, Fair Value Disclosure Accrued interest payable Accrued Interest Payable Fair Value Disclosure Accrued interest payable fair value disclosure Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Loan servicing rights Loan Servicing Rights [Member] Loan Servicing Rights [Member] Other Other Intangible Assets [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] 2019 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Three