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Disclosure - Goodwill and Other Intangible Assets - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 996135 - Disclosure - Goodwill and Other Intangible Assets - Wesbanco's Capitalized Other Intangible Assets and Related Accumulated Amortization (Details) link:presentationLink link:calculationLink link:definitionLink 996145 - Disclosure - Goodwill and Other Intangible Assets - Schedule of Future Amortization on Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 996155 - Disclosure - Investments in Limited Partnerships - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 996155 - Disclosure - Investments in Limited Partnerships - Additional Information (Detail) [Default] link:presentationLink link:calculationLink link:definitionLink 996165 - Disclosure - Investments in Limited Partnerships - Schedule of Equity Commitments (Details) link:presentationLink link:calculationLink link:definitionLink 996175 - 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Commitments to Extend Credit, Guarantees and Various Letters of Credit Outstanding (Detail) link:presentationLink link:calculationLink link:definitionLink 996355 - Disclosure - Business Segments - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 996365 - Disclosure - Business Segments - Schedule of Financial Information to Wesbanco's Business Segment (Detail) link:presentationLink link:calculationLink link:definitionLink 996375 - Disclosure - Business Segments - Schedule of Financial Information to Wesbanco's Business Segment (Parenthetical) (Detail) link:presentationLink link:calculationLink link:definitionLink 996385 - Disclosure - Subsequent Events - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink Payments for Legal Settlements Legal settlement costs Equipment and Software [Member] Equipment and software. Pledged Status [Axis] Scenario [Axis] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Summary of Fair Values of Derivative Instruments on Balance Sheets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Interest Payable Business combination, recognized identifiable assets acquired and liabilities assumed, accrued interest payable. Accrued interest payable Financing Receivable, Modified in Period, Amount Post-Modification Outstanding Recorded Investment Modifications loans Payments of FHLBank Borrowings, Financing Activities Repayment of Federal Home Loan Bank borrowings Risk participation out agreement. Risk Participation Out Agreement [Member] Risk Participation out Agreement [Member] Schedule of defined benefit plan disclosure. Schedule Of Defined Benefit Plan Disclosure Table [Text Block] Schedule of Defined Benefit Pension Plan Financial Asset, Not Past Due [Member] Current [Member] Proceeds From Issuance Of Preferred Stock, Net of Issuance Costs Proceeds From Issuance Of Preferred Stock, Net of Issuance Costs Issuance of preferred stock, net of issuance costs Preferred Stock, Shares Issued Preferred stock, shares issued Preferred Stock, Shares Issued, Total Payment Delay, Term Extension and Interest Rate Reduction [Member] Payment Delay, Term Extension and Interest Rate Reduction [Member] Payment delay, term extension and interest rate reduction. Loan, Held-for-Sale, Fair Value Disclosure Loans held for sale Recorded Investment in Non-Accrual Loans Financing Receivable, Nonaccrual [Table Text Block] Collateral dependent loans Collateral Dependent Loans Fair Value Disclosure Collateral dependent loans fair value disclosure. Weighted Average Number of Shares Outstanding, Diluted Diluted Total diluted average common shares outstanding Equity securities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Equity Securities Business combination, recognized identifiable assets acquired and liabilities assumed, equity securities. APIC, Share-Based Payment Arrangement, Increase for Cost Recognition APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total Stock compensation expense Minimum [Member] Minimum [Member] Gross realized gains Interest Expense, Deposits Total interest expense on deposits Private Placement [Member] Private Placement [Member] Preferred Stock, Shares Outstanding Preferred stock, shares outstanding Preferred Stock, Shares Outstanding, Beginning Balance Preferred Stock, Shares Outstanding, Ending Balance Real estate acquired through foreclosure and development in process. Real Estate Acquired Through Foreclosure And Development In Process Foreclosure proceedings in process on residential real estate loans Other Short-Term Borrowings Other short-term borrowings Other borrowings Payments of Ordinary Dividends, Common Stock Dividends paid to common shareholders Financing receivable amortized cost basis loan balances by year and credit quality indicators. Financing Receivable Amortized Cost Basis Loan Balances By Year And Credit Quality Indicators Table [Text Block] Summary of Amortized Cost Basis Loan Balances by Year of Origination and Credit Quality Indicator Fair Value, Recurring [Member] Recurring Fair Value Measurements [Member] Fair Value Measurement Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block] Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Summary of Amounts Recognized for Major Class of Assets Acquired and Liabilities Assumed Consolidated Entities [Domain] Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Issued, Total Segment Reporting [Line Items] Segment Reporting Information [Line Items] Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Recovery Recoveries Provision for income taxes Income Tax Expense (Benefit), Total Provision for income taxes Tax benefits including low-income housing and historic tax credits WesMark Fees WesMark fees. WesMark fees Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block] Schedule of Assets Measured at Fair Value on Nonrecurring Basis Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Loans and the Allowance for Credit Losses Interest Expense, Money Market Deposits Money market deposits Income tax expense benefit combined federal and state income tax rate. Income Tax Expense Benefit Combined Federal And State Income Tax Rate Percentage of Federal and State income tax rate Payment processing fees. Payment Processing Fees [Member] Payment Processing Fees [Member] Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year Minimum required pension plan contribution Class of Financing Receivable [Axis] Class of Financing Receivable Increase (Decrease) in Deposits Increase (Decrease) in Deposits, Total Deposits (Decrease) increase in deposits Schedule of available for sale securities and held to maturity. Schedule Of Available For Sale Securities And Held To Maturity [Line Items] Schedule Of Available For Sale Securities And Held To Maturity [Line Items] Allowance for credit losses and recorded investments in loans. Allowance For Credit Losses And Recorded Investments In Loans Table [Text Block] Allowance for Credit Losses and Recorded Investments in Loans Securities Purchase Agreement [Member] Securities Purchase Agreement [Member] Securities purchase agreement. Number of investment positions in a continuous unrealized loss position for less than one year, for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year Less than 12 months, Number of Securities Operating Segments [Member] Intangible Asset, Finite-Lived, Class [Domain] Finite-Lived Intangible Assets, Major Class Name Schedule of antidilutive securities included in computation of earnings per share. Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Line Items] Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Line Items] Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price [Abstract] Percentage of national unemployment projection Percentage Of National Unemployment Projection Percentage of national unemployment projection. Cash Acquired from Acquisition Net cash received from PFC acquisition Net deferred loan fee income (costs) Financing Receivable Deferred Income (Cost) Financing receivable deferred income (cost). Debt Securities, Available-for-Sale, Amortized Cost Available-for-sale, Amortized Cost Subsequent Event Type [Domain] Defined Benefit Plan, Benefit Obligation Available credit balance Defined Benefit Plan, Benefit Obligation, Beginning Balance Defined Benefit Plan, Benefit Obligation, Ending Balance Reduction of benefit obligation Schedule Of Available For Sale Securities And Held To Maturity [Table] Schedule Of Available For Sale Securities And Held To Maturity [Table] Schedule Of Available For Sale Securities And Held To Maturity [Table] Held-to-maturity debt securities, Weighted-average yield, After 10 Years Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, after Year 10 Doubtful [Member] Classified - doubtful [Member] Fair value price of PCD loans Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price Amortized Cost and Fair Value Debt Securities [Line Items] Amortized cost and fair value debt securities. Asset-Backed Securities [Member] Asset Backed Securities [Member] Trail commissions. Trail Commissions [Member] Trail Commissions [Member] Payments for (Proceeds from) Loans and Leases Payments for (Proceeds from) Loans and Leases, Total Net increase in loans held for investment General administration General and Administrative Expense General and Administrative Expense, Total Product and Service, Other [Member] Other Real Estate Owned and Other Assets [Member] Income Statement [Abstract] Comprehensive Income (Loss) Note [Text Block] Comprehensive Income/(Loss) Loan Restructuring Modification [Axis] Revision of Prior Period, Accounting Standards Update, Adjustment [Member] Revision of Prior Period, Accounting Standards Update, Adjustment [Member] Nonperforming Financial Instruments [Member] Nonperforming Loans [Member] Total Non-performing [Member] Reclassification out of Accumulated Other Comprehensive Income [Member] Amounts Reclassified From Accumulated Other Comprehensive Income/(Loss) [Member] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income Unused portions of various lines of credit products. Lines Of Credit Lines of credit Payment of termination fee Payment Of Termination Fee Payment of termination fee. Related and Nonrelated Parties [Domain] Annuity commissions. Annuity Commissions [Member] Annuity Commissions [Member] Commercial real estate land and construction. Commercial Real Estate Land And Construction [Member] Commercial Real Estate - Land and Construction [Member] Earnings Per Share, Basic Basic Earnings Per Share, Basic, Total Earnings per common share - basic Finite-Lived Customer Lists, Gross Customer list intangibles Corporate Segment and Other Operating Segment [Member] Corporate Other [Member] Document Period End Date Document Period End Date 2025 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year Document Information [Table] Document Information [Table] Personal service charges. Personal Service Charges [Member] Personal Service Charges [Member] Series B Preferred Stock [Member] Premier Financial Corporation [Member] Premier Financial Corporation [Member] Premier financial corporation. Premier Other Noninterest Expense Other operating expenses Intangible Asset, Finite-Lived, after Accumulated Amortization Finite-Lived Intangible Assets, Net, Ending Balance Finite-Lived Intangible Assets, Net, Beginning Balance Other intangible assets Net carrying amount of other intangible assets Net interest income Business Acquisitions, Pro Forma Net Interest Income Business acquisitions, pro forma net interest income. Common Stock, Shares Authorized Common stock, shares authorized 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Financing receivable including loans held for sale. Financing Receivable Including Loans Held For Sale Total loans Total loans Statement of Stockholders' Equity [Abstract] Accrued expenses and other liabilities Increase (Decrease) in Accrued Expenses and Other Liabilities Increase (decrease) in accrued expenses and other liabilities. Residential real estate home equity and consumer loans classified as substandard and accruing. Residential Real Estate Home Equity And Consumer Loans Classified As Substandard And Accruing Internally assigned loan grades to residential real estate, home equity and consumer loans Total loans Total portfolio loans Total modified loan Portfolio loans, net of unearned income Total loans Interest Income, Securities, Operating, Taxable Taxable Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income Goodwill, Period Increase (Decrease) Goodwill, Period Increase (Decrease), Total Decrease in goodwill recognized Increase in goodwill recognized Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Subordinated Debt and Junior Subordinated Debt Business combination, recognized identifiable assets acquired and liabilities assumed, subordinated debt and junior subordinated debt. Subordinated debt and junior subordinated debt Brokerage Commissions Revenue Net securities brokerage revenue Total net securities brokerage revenue Equity Method Investments and Joint Ventures [Abstract] Intangible Asset, Finite-Lived, Period Increase (Decrease) Finite-Lived Intangible Assets, Period Increase (Decrease), Total Intangible assets Home Equity Line of Credit [Member] Home Equity [Member] Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss) Total other comprehensive (loss) income Other comprehensive income (loss) Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Accounting Standards Update 2025-05 [Member] ASU 2025-05 - Financial Instruments - Credit Losses (Topic 326) Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] Schedule of Future Amortization on Intangible Assets Proceeds from Maturities, Prepayments and Calls of Held-to-Maturity Securities Proceeds from maturities, prepayments and calls Comprehensive Income (Loss) [Table Text Block] Components of Accumulated Other Comprehensive Income (Loss) Securities Gross Realized Gain Loss [Abstract] Securities Gross Realized Gain Loss [Abstract] Disaggregation of Revenue [Table] Assets Total Assets Title of 12(b) Security Title of 12(b) Security Goodwill, Total Goodwill recognized Goodwill Goodwill Goodwill recognized as of June 30, 2025 Goodwill recognized as of September 30, 2025 Preferred Stock, Value, Issued Preferred Stock, Value, Issued, Total Preferred Stock, Value, Issued, Beginning Balance Preferred Stock, Value, Issued, Ending Balance Preferred stock Stock Issued During Period, Value, Stock Options Exercised Stock options exercised Deposits, Savings Deposits Savings deposits Derivative, Notional Amount Aggregate notional amount Notional or Contractual Amount Antidilutive Securities, Name [Domain] Antidilutive Securities, Name Total debt securities, Gross Unrealized Losses Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Loss Interest Rate Lock Commitments [Member] Interest Rate Lock Commitments [Member] Rule 10b5 1 Arr Modified [Flag] Rule 10b5-1 arr modified. Rule 10b5-1 Arrangement Modified Payments of Ordinary Dividends, Preferred Stock and Preference Stock Dividends paid to preferred shareholders Proceeds from issuance of private placement Proceeds from Issuance of Private Placement Interest Paid, Excluding Capitalized Interest, Operating Activity Interest paid on deposits and other borrowings Non-cash Transactions Related to Acquisition Non-cash transactions related to acquisition. Non-cash transactions related to the PFC acquisition Estimated credit losses Debt Securities, Held-to-Maturity, Credit Loss Expense (Reversal) Current period provision Financing receivable allowance for credit loss write-offs recoveries net. Financing Receivable Allowance For Credit Loss Write Offs Recoveries Net Net (charge-offs) recoveries Net charge-offs Net charge-offs Bank Owned Life Insurance Bank-owned life insurance Nonaccrual loans. Non Accrual Loans [Member] Non-Accrual Loans [Member] Treasury shares acquired Treasury Stock, Value, Acquired, Cost Method Location, Statement of Financial Position, Balance [Axis] Interest Expense, Operating Total interest expense Less: Interest expense Transfer of Loans Held for Sale to Loans Held for Investment Transfer of loans held for sale to loans held for investment. Transfer of loans held for sale to loans held for investment Segment Reporting [Table Text Block] Schedule of Financial Information to Wesbanco's Business Segment Repayments of Debt and Lease Obligation Principal repayments of finance lease obligations Bank-owned life insurance Bank Owned Life Insurance Income Interest Income, Securities, Operating, Tax Exempt Tax-exempt Deferred benefits for directors net. Dividend reinvestment from RABBI Trust comprised entirely of company stock. Deferred Benefits For Directors Net Deferred benefits for directors- net Fair Value of Assets Acquired Fair value of net assets acquired 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Payments to Acquire Debt Securities, Available-for-Sale Purchases of securities Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Total available-for-sale debt securities, Fair value, After 10 years Equity commitment due in next twelve months. Equity Commitment Due In Next Twelve Months 2027 Beginning Balance Total Shareholders' Equity Equity, Attributable to Parent Ending Balance Treasury Stock, Common [Member] Treasury Stock [Member] Deposits, Negotiable Order of Withdrawal (NOW) Interest bearing demand Financing receivable allowance for credit losses loans and loan commitments. Financing Receivable Allowance For Credit Losses Loans And Loan Commitments Total ending allowance for credit losses - loans and loan commitments Total beginning allowance for credit losses - loans and loan commitments Total allowance for credit losses - loans and commitments Financing Receivable, Modified [Line Items] Financing Receivable, Modifications [Line Items] Schedule of Purchased Credit Deteriorated Loans [Table Text Block] Schedule of purchased credit deteriorated loans. Summary of Loans Held for Investment Identified as PCD Summary of Purchased Credit Deteriorated Loans Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Net Portfolio Loans Net portfolio loans. Net portfolio loans Fair Value, by Balance Sheet Grouping [Table Text Block] Estimates Fair Values of Financial Instruments Financing Receivable, Purchased with Credit Deterioration, Amortized Cost of Acquired Loans Financing receivable, purchased with credit deterioration, amortized cost of acquired loans. Amortized cost of acquired PCD loans Overdraft limits Overdraft Limits Unused portion of available funds under overdraft programs on deposit programs. Earnings Per Share [Text Block] Earnings Per Common Share Net swap fee and valuation income (loss). Net Swap Fee and Valuation Income (Loss) Net swap fee and valuation income Guarantor Obligations, Current Carrying Value Liability associated with letters of credit Estimate of Fair Value Measurement [Member] Fair Value Estimate [Member] Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Held-to-maturity, Gross Unrealized Gains Purchased Credit Deteriorated Loans [Member] Purchased Credit Deteriorated Loans PCD Loans Weighted Average [Member] Weighted Average [Member] Number of Reportable Segments Reportable segments Real Estate Acquired Through Foreclosure Other real estate owned Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Financial Assets Interest Expense, Savings Deposits Savings deposits Basis of Accounting, Policy [Policy Text Block] Basis of presentation Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments And Hedging Activities Disclosures [Table] Deferred taxes Business Combination, Recognized Asset Acquired, Deferred Tax Asset Deferred tax assets Proceeds from bank owned life insurance Proceeds from Life Insurance Policy Financing Receivable, Collectively Evaluated for Credit Loss Collectively-evaluated for credit losses Commercial Portfolio Segment [Member] Commercial Portfolio Segment [Member] Summary of revenue recognition by type and point of recognition. Summary Of Revenue Recognition By Type And Point Of Recognition Table [Text Block] Summary of Revenue Recognition Commitments to extend credit guarantees and various letters of credit outstanding. Commitments To Extend Credit Guarantees And Various Letters Of Credit Outstanding Table [Text Block] Commitments to Extend Credit, Guarantees and Various Letters of Credit Outstanding Financing Receivable Charge Offs on Acquired Loan Portfolio Prior to Acquisition Financing receivable charge offs on acquired loan portfolio prior to acquisition. Charge-offs on acquired loan portfolio prior acquisition Proceeds from Federal Home Loan Bank borrowings Proceeds from FHLBank Borrowings, Financing Activities Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Available-for-sale, Gross Unrealized Gains Financial Asset, Aging [Domain] Financial Asset, Aging Net securities gains Debt and Equity Securities, Gain (Loss) Net securities (losses) gains Net securities losses Net securities gains reclassified into earnings Summary of Financial Impacts of Loan Modifications and Payment Deferrals to Portfolio Loans Summary of Financial Impacts of Loan Modifications and Payment Deferrals to Portfolio Loans [Table Text Block] Summary of financial impacts of loan modifications and payment deferrals to portfolio loans. Held-to-maturity debt securities, Weighted-average yield, After 1 Year through 5 Years Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, after Year One Through Five Noninterest Income, Other Operating Income Other income Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Effect of dilutive stock options and other stock compensation Equity commitment. Equity Commitment Total Loan swaps. Loan Swaps [Member] Loan Swaps [Member] 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three Equity securities Equity securities, at fair value Equities securities 12 months or more, Number of Securities Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Twelve Months Or Longer Securities in unrealized loss positions qualitative disclosure number of positions twelve​ months​ or longer. Statistical Measurement [Axis] Statistical Measurement Commercial And Industrial - Paycheck Protection Program. Commercial And Industrial Paycheck Protection Program [Member] Commercial And Industrial - PPP [Member] Preferred Stock, No Par Value Preferred stock, no par value Entity Interactive Data Current Entity Interactive Data Current Business Combination, Consideration Transferred, Equity Interest Fair value of Wesbanco shares issued Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost Total available-for-sale debt securities, Amortized Cost, After 10 years Financing Receivable, Credit Loss, Expense (Reversal) Provision for loan losses Number of borrowers with nonaccrual Loan advances outstanding greater than one million U.S. dollars. Nonaccrual Loans Outstanding Greater Than One Million Dollars Per Borrower Number Of Borrowers Number of borrowers with loan balance greater than one million Equity Securities, FV-NI, Gain (Loss) [Abstract] Equity securities: Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Accumulated Defined Benefit Plans Adjustment [Member] This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position. Securities Continuous Unrealized Loss Position Fair Value Fair Value, Total Common Stock, Value, Issued Common Stock, Value, Issued, Total Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Ending Balance Common stock, $2.0833 par value; 200,000,000 shares authorized; 96,191,910 and 96,067,559 shares issued; 95,869,209 and 96,067,559 shares outstanding at June 30, 2026 and December 31, 2025, respectively Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Summary of Earnings Per Common Share Gain​ (loss​) on change​ in fair​ value​ of swap loans​ not​ within​ scope​ of ASC 606. Gain (Loss) On Change In Fair Value Of Swap Loans Not Within Scope Of A S C 606 Gain (loss) on change in fair value of underlying swaps not within the scope of ASC 606 Net Swap Fee and Valuation Income [Member] Net Swap Fee and Valuation Income [Member] Net swap fee and valuation income. Unfunded commercial loan commitments. Unfunded Commercial Loan Commitments Unfunded commercial loan commitments Liabilities Total Liabilities Unfunded equity commitments in other liabilities Financing receivable allowance for credit losses loan commitments. Financing Receivable Allowance For Credit Losses Loan Commitments Allowance for credit losses - loan commitments, ending balance Allowance for credit losses - loan commitments, beginning balance Allowance for loan commitments Date of acquisition Business Combination, Date of Acquisition Agreement Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total Premises and equipment Business Combination [Text Block] Mergers and Acquisitions Equity commitment due in third year. Equity Commitment Due In Third Year 2029 Product and Service [Axis] Product and Service Retained Earnings (Accumulated Deficit) Retained earnings Retained Earnings (Accumulated Deficit), Total Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Ending Balance Purchase price allocation adjustment. Purchase Price Allocation Adjustment [Member] Purchase Price Allocation Adjustment [Member] Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Deferred tax assets Adjustments To Additional Paid In Capital Adjustment Due to Restricted Stock Granted Adjustments to additional paid in capital adjustment due to restricted stock granted. Restricted stock granted Fair Value, Inputs, Level 3 [Member] Significant Unobservable Inputs (Level 3) [Member] Core Deposits [Member] Core Deposits Preferred Stock Dividends, Income Statement Impact Preferred stock dividends Preferred stock dividends Total debt securities, Amortized Cost Debt Securities Pass [Member] Pass [Member] Common dividends declared, per share Common Stock, Dividends, Per Share, Declared DIVIDENDS DECLARED PER COMMON SHARE Fair Value, by Balance Sheet Grouping [Table] Fair Value By Balance Sheet Grouping [Table] Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Deposit overdraft. Deposit Overdraft [Member] Deposit Overdraft [Member] Change In Fair Value Of Net Assets Acquired [Abstract] Change in fair value of net assets acquired. Intangible Asset, Finite-Lived, Acquired Tangible assets acquired Disaggregation of Revenue [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table] Number of newly issued shares Issuance of stock, net of issuance costs, shares Issuance of common stock, net of issuance costs, shares Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration] Net insurance services revenue Insurance Services Revenue Insurance Services Revenue, Total Financial Instrument Performance Status [Domain] Financial Instrument Performance Status Intangible Asset, Finite-Lived, Accumulated Amortization Accumulated amortization Subordinated debt and junior subordinated debt. Subordinated Debt And Junior Subordinated Debt Subordinated debt and junior subordinated debt Equity Securities, FV-NI, Unrealized Gain (Loss) Net unrealized gains recognized on securities still held Purchases of securities Payments to Acquire Held-to-Maturity Securities Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease) Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease), Total Elimination of future salary Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years Total held-to-maturity debt securities at amortized cost, After 5 years through 10 years Interest Rate Derivative Liabilities, at Fair Value Other liabilities - interest rate swaps Other liabilities - interest rate derivatives Unpaid Principal Balance, With no specific allowance recorded Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Liability Derivatives Derivative Liability Derivative Liability, Total Interest Rate Derivative Assets, at Fair Value Other assets - interest rate swaps Other assets - interest rate derivatives Derivative Liability, Statement of Financial Position [Extensible Enumeration] Long-Lived Asset, Class [Axis] Business Combination, Separately Recognized Transaction [Axis] Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Table] Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Table] Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Table] Subsequent Events Subsequent Events [Text Block] Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Amortized Cost Basis by Origination Year 2021 Amortized Cost Basis by Origination Year 2023 Financing Receivable, Year One, Originated, Current Fiscal Year Amortized Cost Basis by Origination Year 2026/2025 Defined Benefit Plan, Service Cost Service cost – benefits earned during year Service cost Fair Value Hierarchy and NAV [Axis] Significant Other Observable Inputs (Level 2) [Member] Debt and Lease Obligation Total borrowings Service charges on deposits. Service Charges on Deposits Service charges on deposits Term Extension [Member] Extended Maturity [Member] Wes mark fees. Wes Mark Fees [Member] WesMark Fees [Member] Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period Intangible assets, amortization period Unaccreted discount on loans purchased. Unaccreted Discount On Loans Purchased Un-accreted discount on purchased loans from acquisitions Corporate Debt Securities [Member] Corporate Debt Securities [Member] Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Fair Value Total available-for-sale debt securities, Fair value, After 5 years through 10 years Debt Securities, Available-for-Sale, Gain (Loss) [Abstract] Debt securities: Available-for-sale, Fair Value Available-for-sale debt securities Available-for-sale debt securities, at fair value Total available-for-sale debt securities, Fair value Net unrealized gains and losses on investments. Net Unrealized Gains And Losses On Investments [Line Items] Net Unrealized Gains And Losses On Investments [Line Items] Interest and Dividend Income, Securities, Operating Total interest and dividends on securities Interest and dividends on securities (Interest and dividend income) Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Writeoff Write-offs Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years Total held-to-maturity debt securities at amortized cost, After 10 years Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss [Abstract] Held-to-maturity debt securities: Non Interest Income Derived From Mortgage Banking Activities Mortgage banking income Mortgage banking income The non interest income derived from mortgage banking. Includes fees earned from loans sold in the secondary market, gains and losses on the sale of mortgage loans to investors, and gains and losses resulting from mortgage-related derivative financial instruments. Taxes, Miscellaneous Taxes, Miscellaneous, Total Miscellaneous taxes Total liabilities assumed Business Combination, Recognized Liability Assumed, Liability Liabilities and Equity Total Liabilities and Shareholders' Equity Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date Allowance on PCD at acquisition Allowance on PCD at acquisition Debt Securities, Available-for-Sale, Realized Loss Gross realized losses Intangible Asset, Finite-Lived, Class [Axis] Finite-Lived Intangible Assets by Major Class Debt Securities, Held-to-Maturity, Fair Value Held-to-maturity securities, fair values Held-to-maturity securities, Fair value Total held-to-maturity debt securities, Fair value Document Fiscal Period Focus Document Fiscal Period Focus Amount of allowance to cover probable credit losses on loan commitments. Allowance For Loan Commitments Allowance for credit losses associated with loan commitments Maximum percentage of total segment revenue Maximum Percentage Of Total Segment Revenue Maximum percentage of total segment revenue. Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Net loans Financing Receivable, after Allowance for Credit Loss Net portfolio loans Financing Receivable With Related Allowance Average Recorded Investment Financing receivable with related allowance average recorded investment. Average recorded investment, With a specific allowance recorded Depreciation, Depletion and Amortization, Nonproduction Depreciation, Depletion and Amortization, Nonproduction, Total Depreciation and amortization expense Residential real estate home equity and consumer loans classified as substandard. Residential Real Estate Home Equity And Consumer Loans Classified As Substandard Aggregate amount of residential real estate, home equity and consumer loans classified as substandard Financial Asset, Past Due [Member] Total Past Due [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Forward TBA contracts. Forward T B A Contracts [Member] Forward TBA Contracts [Member] Investment Program, Proportional Amortization Method, Applied, Amortization Expense Partnerships losses and impairment Letters of Credit Outstanding, Amount Letters of credit Sale of Stock [Axis] Amortized Cost Basis by Origination Year, Prior to 2019 Financing Receivable, Originated, More than Five Years before Current Fiscal Year Amortized Cost Basis by Origination Year, Prior to 2017 Amortized Cost Basis by Origination Year, Prior to 2021/2020 Amount of voluntary contributions received and expected to be received by defined benefit plan from employer in current fiscal year. Defined Benefit Plan Voluntary Future Employer Contributions Current Fiscal Year Expected voluntary contribution for the year 2026 Income taxes paid Income Tax Paid, before Refund Received Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Total available-for-sale debt securities at amortized cost, Within one year Intangible Asset, Finite-Lived, Useful Life Intangible asset, useful life Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Net (decrease) increase in cash, cash equivalents and restricted cash Large amount of nonaccrual loans, outstanding, net loan amount of all borrowers. Large Amount Of Nonaccrual Loans Outstanding Net Loan Amount Of All Borrowers Borrowers with large amount of loans outstanding, net Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table Text Block] Schedule of Allowance for Credit Losses on Held-to-maturity Securities Entity Current Reporting Status Entity Current Reporting Status Property, Plant, and Equipment, before Accumulated Depreciation, Period Increase (Decrease) Property, Plant and Equipment, Gross, Period Increase (Decrease), Total Premises and equipment Interest and Dividend Income, Operating [Abstract] INTEREST AND DIVIDEND INCOME Defined benefit plan, periodic pension income. Defined Benefit Plan Periodic Pension Income Periodic pension income Fair Value, Inputs, Level 1 [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] Class of Stock [Domain] Class of Stock Unrealized Losses, Total Amount of accumulated pre-tax unrealized loss on investments on securities impacting investments. Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated In Investments Financial Instrument [Axis] Financial Instrument Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Amortized Cost Total available-for-sale debt securities at amortized cost, After 5 years through 10 years Assets, Fair Value Disclosure Total assets recurring fair value measurements OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Net change in unrealized (losses) gains on debt securities available-for-sale Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Total available-for-sale debt securities, Fair value, After 1 year through 5 years Financing Receivable, Credit Quality Indicator [Table] Schedule Of Financing Receivable Recorded Investment Credit Quality Indicator [Table] Document Transition Report Document Transition Report Investment securities in unrealized loss positions qualitative disclosure number of positions. Investment Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Number of Securities Total Equipment and software expense. Equipment And Software Expense Equipment and software Held to maturity securities net. Held To Maturity Securities Net Net held-to-maturity debt securities Net held-to-maturity debt securities Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation [Domain] Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation Commitments and Contingencies Disclosure [Abstract] Defined Benefit Plan, Expected Return (Loss) on Plan Assets Expected return on plan assets Risk participation in agreements. Risk Participation In Agreements [Member] Risk Participation in Agreements [Member] Subsequent Event [Line Items] Interest Expense, Short-Term Borrowings Other short-term borrowings Interest Expense, Short-term Borrowings, Total Accounting Standards Update [Domain] Accounting Standards Update Non Rule 10b5 1 Arr Modified [Flag] Non rule 10b5-1 arr modified. Non-Rule 10b5-1 Arrangement Modified Trust fees. Trust Fees Trust fees Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items] Schedule of Unrealized Losses on Investment Securities Schedule of Unrealized Loss on Investments [Table Text Block] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Schedule Of Trading Securities And Other Trading Assets [Table] Oci Debt Securities Available For Sale State Oci Tax Rate Change Amortization Oci debt securities available for sale state oci tax rate change amortization. Amortization of state tax rate adjustment reclassified to earnings Amortization of state tax rate change reclassified into earnings Trust account fees. Trust Account Fees [Member] Trust Account fees [Member] Payment Delay [Member] Payment Deferral [Member] Equity commitment due in second year. Equity Commitment Due In Second Year 2028 Increase (Decrease) in Securities Borrowed Investment securities Common Stock [Member] Common Stock [Member] Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivatives and Hedging Activities Business Combination, Recognized Asset Acquired, Asset Business combination, Assets Assets Total assets acquired Accounting Standards Update [Axis] Accounting Standards Update Statistical Measurement [Domain] Statistical Measurement Marketable Securities Total securities Summary of Unaudited Pro Forma Information Business Combination, Pro Forma Information [Table Text Block] Noninterest Expense [Abstract] NON-INTEREST EXPENSE Less : Commercial Real Estate Portfolio Segment [Member] Commercial Real Estate [Member] Intangible Asset, Finite-Lived, before Accumulated Amortization Finite-Lived Intangible Assets, Gross, Total Gross carrying amount Financial Instrument Performance Status [Axis] Financial Instrument Performance Status Pledged Status [Domain] Stock Issued During Period, Value, Dividend Reinvestment Plan Stock issued for dividend reinvestment Equity, Attributable to Parent [Abstract] SHAREHOLDERS' EQUITY Weighted Average Number of Shares Outstanding, Basic Basic Total average basic common shares outstanding Weighted Average Number of Shares Outstanding, Basic, Total Commercial banking fees. Commercial Banking Fees [Member] Commercial Banking Fees [Member] Revenue recognition period description. Revenue Recognition Period Description Point of revenue recognition Assets [Abstract] ASSETS Financing Receivable, Allowance for Credit Loss, Collectively Evaluated Allowance for loans collectively evaluated for impairment Loan Restructuring Modification [Domain] Entity Central Index Key Entity Central Index Key Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] Antidilutive Securities [Axis] Antidilutive Securities Modification to allowance due to modified loan subsequently defaulting Financing Receivable Allowance For Credit Losses Modifications For Borrowers Experiencing Financial Difficulty Recorded Investment Financing receivable allowance for credit losses modifications for borrowers experiencing financial difficulty recorded investment. Residential Portfolio Segment [Member] Residential Real Estate [Member] Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Proceeds from maturities, prepayments and calls Interest-Bearing Deposits in Banks and Other Financial Institutions Interest bearing deposits, banks Stock Issued During Period, Shares, Acquisitions Stock issued for Premier Financial Corp. ("PFC") acquisition, shares Consolidation Items [Axis] Current Fiscal Year End Date Current Fiscal Year End Date Number of Interest Rate Derivatives Held Number of interest rate swaps Number Of Interest Rate Derivatives Held Document Quarterly Report Document Quarterly Report Debit Card Sponsorship Income. Debit Card Sponsorship Income [Member] Debit Card Sponsorship Income [Member] Amortized Cost and Fair Value Debt Securities [Table] Amortized cost and fair value debt securities. Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] Payments to Acquire Businesses, Gross Cash consideration for outstanding PFC shares Real Estate Owned, Transfer to Real Estate Owned Transfers of loans to other real estate owned Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Held-to-maturity, Gross Unrealized Losses Percentage of total by loan category Percentage of Restructured Loans Percentage of restructured loans. Fair Value, Inputs, Level 2 [Member] Significant Other Observable Inputs (Level 2) [Member] Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent Cash and due from banks Net cash received in the acquisition Modifications for Borrowers Experiencing Financial Difficulty ("MBEFD") Troubled Debt Restructuring [Policy Text Block] Number of holdings greater than specified percentage of equity. Number Of Holdings Greater Than Specified Percentage Of Equity Number of holdings greater than specified percentage of equity Time Deposits Certificates of deposit Time Deposits, Total Business Combination [Abstract] Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net Cash Provided by (Used in) Operating Activities, Total NET CASH PROVIDED BY OPERATING ACTIVITIES Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Financing Receivable, Non Purchased with Credit Deterioration, Interest and Credit Marks Financing receivable, non purchased with credit deterioration, interest and credit marks. Interest and credit marks of non-PCD loans Earnings Per Share, Diluted Diluted Earnings Per Share, Diluted, Total Earnings per common share - diluted Issuance of common stock Sale of Stock, Number of Shares Issued in Transaction Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Net income Net income Accumulated unrealized gains (losses) on securities available for sale. Accumulated Unrealized Gains Losses On Securities Available For Sale [Member] Accumulated Unrealized Gains (Losses) on Debt Securities Available for Sale [Member] Financial Asset, Equal to or Greater than 90 Days Past Due [Member] 90 Days or More Past Due [Member] Deposits [Member] Total Service Charges on Deposits [Member] Commitments and Contingencies Disclosure [Text Block] Commitments and Contingent Liabilities Financial Asset, 30 to 59 Days Past Due [Member] 30-59 Days Past Due [Member] Deposits Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposits Business combination recognized identifiable assets acquired and liabilities assumed deposits. Long-Lived Asset, Class [Domain] Other Contract [Member] Other Contract [Member] SBA Payroll Protection Program. S B A Payroll Protection Program [Member] PPP Loans [Member] Total impaired loans, Recorded investment Financing Receivable, Nonaccrual Non-accrual loans Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income (loss) Preferred Stock, Liquidation Preference, Value Non-cumulative perpetual preferred stock, liquidation preference Ratio for exchange of common stock for each share Merger Agreement, Common Stock Exchange Ratio Merger agreement, common stock exchange ratio. Measurement Frequency [Domain] Measurement Frequency Noninterest-Bearing Deposit Liabilities Non-interest bearing demand Noninterest-bearing Deposit Liabilities, Total Scenario [Domain] Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Net effect on accumulated other comprehensive income for the period Net effect on accumulated other comprehensive income/(loss) for the period Amounts reclassified from accumulated other comprehensive income (loss) Amounts reclassified from accumulated other comprehensive income (loss) Equity Components [Axis] Equity Components Real Estate Loan [Member] Commercial Real Estate - Improved Property [Member] Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] INVESTING ACTIVITIES Financing Receivable, Modified, Subsequent Default [Table Text Block] Summary of Loans with FDMs Statement of Cash Flows [Abstract] Stock Issued During Period, Shares, Dividend Reinvestment Plan Stock issued for dividend reinvestment, shares Core deposit and other intangible assets acquired Core Deposit And Other Intangible Assets Acquired Core deposit and other intangible assets acquired. Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV Debt Securities, Available-for-Sale, Maturity, Rolling after 10 Years, Weighted Average Yield Available-for-sale debt securities, Weighted-average yield, After 10 Years Retirement Benefits [Abstract] Loans that subsequently defaulted TDRs defaulted Financing Receivable, Modified, Subsequent Default Debt Securities, Available-for-Sale, Maturity, Rolling after One Through Five Years, Weighted Average Yield Available-for-sale debt securities, Weighted-average yield, After 1 Year through 5 Years Schedule of Investments [Line Items] Commercial And Industrial [Member] Commercial and industrial. Commercial and Industrial [Member] Increase Decrease in fair value of net assets acquired Increase Decrease in fair value of net assets acquired Total change in fair value of net assets required Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Schedule of Fair Value of Assets and Liabilities Measured on Recurring and Nonrecurring Basis Stock Issued During Period, Shares, Restricted Stock Award, Gross Restricted stock granted, shares Depositary Shares Series B Non-Cumulative Perpetual Preferred Stock [Member] Depositary shares, series B non-cumulative perpetual preferred stock. Depositary Shares, Series B Non-Cumulative Perpetual Preferred Stock [Member] Financing Receivable, Allowance for Credit Loss Allowance for credit losses - loans, ending balance Allowance for credit losses - loans, beginning balance Allowance for credit losses - loans Deposits Deposits Total deposits Schedule of nonperforming loans. Summary of Nonperforming Loans Schedule of Nonperforming Loans [Table Text Block] Equity Method Investments [Member] Amortized Cost Basis by Origination Year 2022 Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year Amortized Cost Basis by Origination Year 2020 Amortized Cost Basis by Origination Year 2025/2024 Preferred Stock, Shares Authorized Preferred stock, shares authorized Schedule of Equity Commitments [Table Text Block] Schedule of equity commitments. Schedule of Equity Commitments Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Federal Home Loan Bank Borrowings Business combination, recognized identifiable assets acquired and liabilities assumed, Federal Home Loan Bank borrowings. FHLB borrowings Schedule of Realized Gain (Loss) [Table Text Block] Schedule of Gross Realized Gains and Losses on the Sales and Calls of Securities Derivative Contract [Domain] Derivative Contract Class of Stock [Axis] Class of Stock Derivative Instruments, Gain (Loss) [Table Text Block] Summary of Effect of Derivative Instruments on Income Statement Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Securities excluded from computation of net income per diluted shares Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Amortization of prior service cost Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation [Axis] Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation Financial Asset, 60 to 89 Days Past Due [Member] 60-89 Days Past Due [Member] Number of Operating Segments Operating segments AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Member] Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Financial Liabilities Mortgage. Mortgage [Member] Mortgage [Member] Noninterest Income Non-interest income Total non-interest income Marketable Securities [Abstract] Securities: Interest Receivable Accrued interest receivable Business Combination [Table Text Block] Summary of Preliminary Purchase Price of PFC Acquisition and Goodwill Telecommunications Telecommunications. Interest rate loan commitments. Interest Rate Loan Commitments [Member] Interest Rate Loan Commitments [Member] Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Increase (Decrease) in Accrued Income and Other Assets Increase (decrease) in accrued income and other assets. Accrued income and other assets Interest Expense, Time Deposits Certificates of deposit Interest Expense, Time Deposits, Total Expenditures for salaries for officers and non-officers. Does not include pension and post-retirement benefit expense or other labor-related non-salary expense. Salaries And Officer Compensation Salaries and wages Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling after One through Five Years Total held-to-maturity debt securities at amortized cost, After 1 year through 5 years Variable Interest Entity Disclosure [Text Block] Investments in Limited Partnerships Amortized Cost Basis by Origination Year 2019 Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year Amortized Cost Basis by Origination Year 2017 Amortized Cost Basis by Origination Year 2022/2021 Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Available-for-sale, Gross Unrealized Losses Intangible Asset, Goodwill and Other [Abstract] The aggregate expense charged against earnings to allocate the cost of intangible core deposits and customer lists in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Amortization Of Core Deposits And Customer List Amortization of core deposit and customer list intangible assets Document Type Document Type Digital banking income. Digital Banking Income [Member] Digital Banking Income [Member] Financing Receivable, Allowance for Credit Loss, Writeoff, Total Financing Receivable, Allowance for Credit Loss, Writeoff Charge-offs Charge-offs Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Total held-to-maturity debt securities, Fair value, After 1 year through 5 years Criticized [Member] Criticized [Member] Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] OPERATING ACTIVITIES Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Stock Option [Member] Subsequent Event [Member] Subsequent Event [Member] Financing Receivable, Allowance for Credit Loss [Table Text Block] Summary of Changes in Allowance for Credit Losses Sale of shares price per share Sale of Stock, Price Per Share Summary of commercial loans by risk grade. Summary Of Commercial Loans By Risk Grade [Abstract] Summary of commercial loans by risk grade Business combination, recognized identifiable assets acquired and liabilities assumed, loans. Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Loans Internal Credit Assessment [Axis] Internal Credit Assessment Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total Intangible assets Financing Receivable, Allowance for Credit Loss, Recovery Recoveries Current-period recoveries Market value of cash and securities managed. Assets Managed Market value of assets managed or held in custody by trust and investment services segment Market value of trust assets Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Total available-for-sale debt securities, Fair value, Within one year Business Combination, Separately Recognized Transaction [Domain] Dividends, Common Stock, Cash Common dividends declared Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, Tax Related income tax effect Total impaired loans, Average recorded investment Financing Receivable Average Recorded Investment Financing receivable average recorded investment. Amortized Cost Basis by Origination Year 2021 Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year Amortized Cost Basis by Origination Year 2019 Amortized Cost Basis by Origination Year 2024/2023 Electronic banking fees. Electronic Banking Fees [Member] Electronic Banking Fees [Member] TDRS. Tdrs [Member] TDRs Accruing Interest [Member] Segment Reporting [Table] Schedule Of Segment Reporting Information By Segment [Table] Asset Class [Domain] Securities Act File Number Entity File Number Unpaid Principal Balance, With no specific allowance recorded Financing Receivable Nonaccrual No Allowance Unpaid Principal Balance Financing receivable nonaccrual no allowance unpaid principal balance. Defined Benefit Plan, Amortization of Gain (Loss) Amortization of net (gain) loss 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 Provision for Loan, Lease, and Other Losses, Total Less: Provision for credit losses Provision for credit losses Defined Benefit Plan, Pre-Tax Curtailment Gain Defined Benefit Plan, Pre-Tax Curtailment Gain Pre-tax curtailment gain Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] Collateral Already Posted, Aggregate Fair Value Collateral posted with market value on liability positions with credit risk-related contingent features Total impaired loans, Unpaid principal balance Financing Receivable Nonaccrual Unpaid Principal Balance Financing receivable nonaccrual unpaid principal balance. Equity commitment due in remainder of fiscal year. Equity Commitment Due In Remainder Of Fiscal Year 2026 Dividends, Preferred Stock, Cash Preferred dividends declared Retained Earnings [Member] Retained Earnings [Member] Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement Reduction of benefit obligation Net gains on other real estate owned and other assets The net gain (loss) resulting from sales and other disposals of other real estate owned and other assets, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned and other assets after acquisition or physical possession. Net gain (loss) on other real estate owned and other assets Net loss on other real estate owned and other assets Total debt securities, Gross Unrealized Gains Debt Securities, Available-for-Sale and Held-to-Maturity, Cumulative Unrecognized Gain Investment in Debt and Equity Securities and Other Trading Assets [Text Block] Securities Community banking. Community Banking [Member] Community Banking [Member] Derivative Instrument Detail [Abstract] Entity Registrant Name Entity Registrant Name Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent Other assets Accounting Policies [Abstract] Substandard [Member] Classified - substandard [Member] Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Partnership income under equity method Financing Receivable Purchased With Credit Deterioration Allowance Acquisition Date Increased Amount Financing Receivable Purchased With Credit Deterioration Allowance Acquisition Date Increased Amount Financing receivable purchased with credit deterioration allowance acquisition date increased amount Consumer [Member] Consumer Portfolio Segment [Member] Entity Address, Address Line One Entity Address, Address Line One Proceeds from (Payments For) Premises And Equipment Net Proceeds from (payments for) premises and equipment net. Purchases of premises and equipment - net Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value Total held-to-maturity debt securities, Fair value, After 10 years Equity and debt security trades. Equity And Debt Security Trades [Member] Equity And Debt Security Trades [Member] Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance Loans held for sale, current Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance, Beginning Balance Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance, Ending Balance Assets excluding goodwill and intangible assets Business Combination, Recognized Asset Acquired, Asset, Current Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Total Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Stock options exercised, shares Financing Receivable, Revolving Revolving Loans Income Tax Credits and Adjustments Income tax credits and adjustments Business Combination, Recognized Liability Assumed, Liability [Abstract] Fair value of liabilities assumed Liabilities Advance from Federal Home Loan Bank Federal Home Loan Bank borrowings Advances from Federal Home Loan Banks, Total Proceeds from (Repayments of) Short-Term Debt, Total Proceeds from (Repayments of) Short-Term Debt Decrease in other short-term borrowings Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-Term Federal Home Loan Bank borrowings Net swap fee and valuation income Net Swap Fee and Valuation Income Net swap fee and valuation income. Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Net periodic pension income Fair Value, Recurring and Nonrecurring [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Segments [Axis] Segments Net income Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax Accounting Standards Update 2016-13 [Member] ASU 2016-13 [Member] SUPPLEMENTAL DISCLOSURES Supplemental Cash Flow Information [Abstract] This item represents the aggregate fair value of investments in debt and equity securities that have been in a continuous unrealized loss position for twelve months or longer. Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value 12 months or more, Fair Value Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Recorded Investment in Loans by Category Net assets acquired Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) Fair value of net assets acquired Entity Small Business Entity Small Business Summary of Details of Portfolio Loans Modified by Loan Category Summary of Details of Portfolio Loans Restructured by Loan Category [Table Text Block] Summary of details of portfolio loans restructured by loan category. Number of branches. Number Of Branches Number of branches Managed money. Managed Money [Member] Managed Money [Member] Interest Income (Expense), Operating Net interest income NET INTEREST INCOME Intangible Assets Goodwill And Other Assets [Line Items] Intangible assets goodwill and other assets. Intangible Assets Goodwill And Other Assets [Line Items] Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Total held-to-maturity debt securities, Fair value, Within one year Assets acquired Fair value of assets acquired Assets: Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Net Impact of After-tax Purchase Accounting Accretion Adjustments Net impact of after-tax purchase accounting accretion adjustments. Net impact of after-tax purchase accounting accretion adjustments Interest Expense, Demand Deposit Accounts Interest bearing demand deposits Consolidation Items [Domain] Change in Accounting Principle, Accounting Standards Update, Adoption Date Other Assets Other assets Other Assets, Total Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Contingent obligations to purchase loans funded by other entities. Contingent Obligations To Purchase Loans Funded By Other Entities Contingent obligations and other guarantees Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Fair Value Total held-to-maturity debt securities, Fair value, After 5 years through 10 years Treasury Stock, Shares, Acquired Treasury shares acquired, shares Other Real Estate, Foreclosed Assets, and Repossessed Assets Other real estate owned and repossessed assets Total other real estate owned and repossessed assets Other real estate owned and repossessed assets Modifications for Borrowers Experiencing Financial Difficulty ("MBEFD") Modifications for Borrowers EFD Policy [Policy Text Block] Modifications for Borrowers EFD Policy. EARNINGS PER COMMON SHARE Earnings Per Share [Abstract] Marketing Expense Marketing Derivative Asset Asset Derivatives Derivative Asset, Total Proceeds from (repurchase of) treasury stock. Proceeds From Repurchase Of Treasury Stock Treasury shares purchased - net US States and Political Subdivisions Debt Securities [Member] Obligations of State and Political Subdivisions [Member] Obligations of States and Political Subdivisions [Member] Continuous unrealized loss position less than twelve months aggregate losses accumulated in investments. Securities Continuous Unrealized Loss Position Less Than Twelve Months Aggregate Losses Accumulated In Investments Less than 12 months, Unrealized Losses Accounting Standards Update 2022-02 [Member] ASU 2022-02 Financial Instruments - Credit Losses (Topic 326) ASU 2022-02 [Member] Asset Pledged as Security Asset Pledged as Collateral without Right [Member] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Net Occupancy [Member] Occupancy [Member] Amortized cost and fair value debt securities. Amortized Cost And Fair Value Debt Securities [Abstract] Deferred Compensation, Share-Based Payments [Member] Deferred Benefits for Directors [Member] Payment processing fees. Payment Processing Fees Payment processing fees Subsequent Event Type [Axis] Financing Receivable Credit Quality Indicators [Table Text Block] Summary of Commercial Loans by Risk Grade Equity [Abstract] Product and Service Product and Service [Domain] Liabilities assumed Liabilities Assumed Liabilities assumed Measurement Frequency [Axis] Measurement Frequency Limited Liability Company [Member] Interest and Fee Income, Financing Receivable Loans, including fees Interest and Fee Income, Loans and Leases, Total FINANCING ACTIVITIES Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Intangible Asset, Including Goodwill, after Accumulated Amortization Goodwill and other intangible assets, net Intangible Assets, Net (Including Goodwill), Total Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Portfolio Loans Business combination, recognized identifiable assets acquired and liabilities assumed, net portfolio loans. Net portfolio loans Other Repossessed Assets Repossessed assets Consolidated Entities [Axis] Financing Receivable, Past Due [Table Text Block] Summary of Age Analysis of Loan Categories Depositary Shares Series A Non Cumulative Perpetual Preferred Stock [Member] Depositary shares, series A non cumulative perpetual preferred stock. Depositary Shares, Series A Non-Cumulative Perpetual Preferred Stock [Member] Debt Securities, Held-to-Maturity, Weighted Average Yield Held-to-maturity debt securities, Weighted-average yield, Total Interest Payable Accrued interest payable Liabilities [Abstract] LIABILITIES Principal of acquired PCD loans Financing Receivable, Purchased with Credit Deterioration, Amount at Par Value Loans held for investment, identified as PCD Interest and Dividend Income, Operating Interest and dividend income Total interest and dividend income Entity Tax Identification Number Entity Tax Identification Number Merger Related and Restructuring Charges Merger-related and restructuring charges. Merger-related and restructuring Treasury Stock, Common, Shares Treasury stock, shares Treasury shares issued Goodwill, Impairment Loss Goodwill, impairment loss Derivative Instrument [Axis] Derivative Instrument Equity Component [Domain] Equity Component Federal deposit insurance corporation premium expense income. Federal Deposit Insurance Corporation Premium Expense Income FDIC insurance Entity Address, City or Town Entity Address, City or Town Intangible Asset, Finite-Lived, after Accumulated Amortization [Abstract] Other intangible assets: Business Combination [Axis] Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost Total available-for-sale debt securities at amortized cost, After 1 year through 5 years Stock Issued During Period, Value, New Issues Issuance of stock, net of issuance costs Total securities, Fair Value Investments, Fair Value Disclosure Total debt securities, Fair Value Segments [Domain] Segments Occupancy, Net Net occupancy Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Equity Method Investments Amount invested in partnerships Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of Amortized Cost and Fair Value of Available-for-Sale and Held-to-Maturity Securities by Contractual Maturity Impaired Financing Receivables [Table Text Block] Summary of Nonperforming Loans Marketable Securities [Table Text Block] Schedule of Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities Net Income (Loss) Attributable to Parent [Abstract] Numerator for both basic and diluted earnings per common share: Loans past due and accruing interest excluding TDRS. Loans Past Due And Accruing Interest Excluding T D R S Past due loans excluded TDRs past due and accruing Goodwill and Other Intangible Assets Intangible Asset and Goodwill [Text Block] Equity commitment due after fourth year. Equity Commitment Due After Fourth Year 2031 and thereafter The amount of the transfers between levels of the fair value hierarchy. Fair Value Transfers Between Level Fair value transfer amount Business Acquisitions, Pro Forma Non Interest Income Business acquisitions, pro forma non interest income. Non interest income Measurement Basis [Axis] Measurement Basis Weighted Average Number of Shares Outstanding, Diluted [Abstract] AVERAGE COMMON SHARES OUTSTANDING Denominator: Debt Securities, Available-for-Sale, Maturity, Rolling after 5 through 10 Years, Weighted Average Yield Available-for-sale debt securities, Weighted-average yield, After 5 Years through 10 Years Statement [Table] Statement [Table] Debt Securities, Available-for-Sale, Realized Gain (Loss) Net gains (losses) on debt securities Net gains on debt securities The maximum percentage of shareholders' equity of any one issuer other than the U.S. government and its agencies. Maximum Percentage Of Equity Of One Issuer Maximum percentage of equity of one issuer Income before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (loss) before provision for income taxes Payments for Merger Related Costs Merger-related expenses Entity Shell Company Entity Shell Company Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Net cash provided by investing activities Statement [Line Items] Statement [Line Items] Fiduciary and Trust [Member] Total Trust Fees [Member] Total Trust Fees [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] Loans Held for Investment Identified as Non Purchased Credit Deteriorated Loans held for investment identified as non-purchased credit deteriorated. Loans held for investment identified as non-PCD AOCI, Debt Securities, Available-for-Sale, Adjustment, after Tax AOCI, Debt Securities, Available-for-sale, Adjustment, after Tax, Total Net unrealized losses on available-for-sale securities included in AOCI Net unrealized losses on available-for-sale securities included in AOCI Loans receivable net current. Loans Receivable Net Current Total loans, current Finite-Lived Intangible Assets, Amortization Expense, Year Five and Thereafter Finite-lived intangible assets, amortization expense, year five and thereafter. 2030 and thereafter Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, Year One Held-to-maturity debt securities, Weighted-average yield, Within One Year Financing Receivable, Modified, Past Due [Line Items] Maximum [Member] Maximum [Member] Rate Reduction [Member] Rate reduction. Rate Reduction [Member] Interest Income (Expense), after Provision for Loan Loss Net interest income after provision for credit losses Net interest income after provision for credit losses Proceeds from Sale of Debt Securities, Available-for-Sale Proceeds from sales Proceeds from sale of available-for-sale securities Sale of Stock [Domain] OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Net effect on other comprehensive (loss) income for the period Deferred benefits for directors net. Dividend reinvestment from RABBI Trust comprised entirely of company stock. Deferred Benefits For Directors Deferred benefits for directors Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Available-for-sale Debt Securities Business combination, recognized identifiable assets acquired and liabilities assumed, available-for-sale debt securities. Available-for-sale debt securities Business Combination, Recognized Asset Acquired, Investment in Debt and Equity Securities, Current Securities Investment securities Number of Right to Receive Shares, Converted from Outstanding Common Stock Number of right to receive shares, converted from outstanding common stock. Number of right to receive shares, converted from outstanding common stock Business Combination [Domain] Business Combination, Voting Equity Interest Acquired, Percentage Percentage of voting interests This item represents the aggregate fair value of investments in debt and equity securities that have been in a continuous unrealized loss position for less than twelve months. Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value Less than 12 months, Fair Value Financing Receivable, 90 Days or More Past Due, Still Accruing 90 Days or More Past Due and Accruing Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Federal statutory tax rate Financing Receivable Initial Allowance For Credit Losses On Acquired PCD Loans Financing receivable, initial allowance for credit losses on acquired PCD loans. Initial allowance for credit losses on acquired PCD loans Noninterest Expense Non-interest expense Total non-interest expense Subsequent Events [Abstract] Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Abstract] Reconciliation of segment profit (loss) Asset Class [Axis] Investments, Debt and Equity Securities [Abstract] Supplies Supplies Expense Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment Collateral dependent loans, Appraisal adjustments Collateral Dependent Loans Appraisal Adjustments Collateral dependent loans appraisal adjustments. Liabilities, Fair Value Disclosure Total liabilities recurring fair value measurements Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Net effect on other comprehensive loss for the period Common dividends declared, per share Dividends Payable, Amount Per Share Loans Receivable, Fair Value Disclosure Loans held for investment acquired from PFC Document Fiscal Year Focus Document Fiscal Year Focus Common Stock, Shares, Outstanding Common stock, shares outstanding Common Stock, Shares, Outstanding, Beginning Balance Common Stock, Shares, Outstanding, Ending Balance Equity commitment due in fourth year. Equity Commitment Due In Fourth Year 2030 Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Net securities gains reclassified into earnings Merger Agreement [Member] Merger Agreement [Member] Merger agreement. Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Interest Receivable Business combination, recognized identifiable assets acquired and liabilities assumed, accrued interest receivable. Accrued interest receivable Available-for-sale debt securities, Total Debt Securities, Available-for-Sale, Weighted Average Yield Financial Instruments [Domain] Financial Instruments Statement of Comprehensive Income [Abstract] Business Combination [Line Items] Business Combination, Consideration Transferred Total purchase price Total purchase price Total merger consideration Forecast [Member] Unfunded Loan Commitment [Member] Unfunded Loan Commitment [Member] Other liabilities Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent Interest and Dividend Income, Securities, by Taxable Status [Abstract] Interest and dividends on securities: Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss Held-to-maturity, Amortized Cost Net held-to-maturity debt securities Held-to-maturity debt securities (fair values of $1,005,725 and $1,035,957, respectively) Collateral dependent loans, Liquidation expenses Collateral dependent loans Liquidation Expenses Collateral dependent loans liquidation expenses. Change in Accounting Principle, Accounting Standards Update, Adopted [true false] Financing receivables current past due. Financing Receivables Current Past Due [Member] Current [Member] Revision of Prior Period Revision of Prior Period [Domain] Wesbanco's Capitalized Other Intangible Assets and Related Accumulated Amortization Intangible Asset, Finite-Lived [Table Text Block] Fair value inputs assets quantitative information line items. Fair Values Inputs Assets Quantitative Information [Line Items] Fair Value Inputs Asset Quantitative Information [Line Items] Treasury Stock, Value Treasury Stock, Value, Total Treasury stock (322,701 and 0 shares - at cost, respectively) Security Exchange Name Security Exchange Name Total revenues Revenues Related and Nonrelated Parties [Axis] New Accounting Pronouncements, Policy [Policy Text Block] Recent accounting pronouncements Derivative, Gain (Loss) on Derivative, Net Net gain (loss) on change in fair value Total gain (loss) on derivative financial instruments Derivative, Gain (Loss) on Derivative, Net, Total Total gain (loss) on derivative financial instruments Accrued interest receivable for loans Financing Receivable, Accrued Interest, before Allowance for Credit Loss Entity Address, State or Province Entity Address, State or Province Interest Expense, Junior Subordinated Debentures Subordinated debt and junior subordinated debt Series A Preferred Stock [Member] Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Income (loss) on derivative instrument not designated hedges Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Total Business Combination, Price Per Share Acquisition closing stock price Schedule of Unrealized Losses on Investment Securities Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Commercial Mortgage-Backed Securities [Member] Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] Amendment Flag Amendment Flag Financial Asset, Aging [Axis] Financial Asset, Aging Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax Amortization of net gain and prior service costs Financing Receivable With No Related Allowance Average Recorded Investment Financing receivable with no related allowance average recorded investment. Average recorded investment, With no related specific allowance Term Extension and Rate Reduction [Member] Extended Maturity and Interest Rate Reduction [Member] Sale of portfolio loans - net Proceeds from Sale of Notes Receivable Non-interest income: NON-INTEREST INCOME Digital banking income. Digital Banking Income Digital banking income Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Cash, cash equivalents and restricted cash at end of the period Cash, cash equivalents and restricted cash at beginning of the period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Total Financing Receivable, Past Due [Table] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment Financing Receivable, Allowance for Credit Loss, Individually Evaluated Allowance for loans individually evaluated for impairment Debt Securities, Available-for-Sale [Abstract] Available-for-sale debt securities: City Area Code City Area Code Recorded Investment, With no specific allowance recorded Financing Receivable, Nonaccrual, No Allowance Internal Credit Assessment [Domain] Internal Credit Assessment Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table] Debt Securities Held To Maturity Allowance For Credit Loss [Table] Preferred Stock [Member] Preferred Stock [Member] Reported Value Measurement [Member] Carrying Amount [Member] OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax Related income tax effect Organization, Consolidation and Presentation of Financial Statements [Abstract] Class of Financing Receivable [Domain] Class of Financing Receivable Federal Home Loan Bank Stock Federal home loan bank stock, Total Increase (Decrease) in Loan, Held-for-Sale Loans held for sale Proceeds from issuance of common stock Issuance of common stock, net of equity issuance costs Issuance of common stock Trust and investment services. Trust And Investment Services [Member] Trust and Investment Services [Member] Trust And Investment Services [Member] Schedule of Investments [Table] Financing Receivable, Individually Evaluated for Credit Loss Individually evaluated for credit loss Held-to-Maturity Securities [Member] Held-to-maturity Securities [Member] Loan modification, extended maturity and payment deferral. Loan Modification [Member] Loan Modification [Member] Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Other comprehensive income (loss) before reclassifications Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Recorded Investment [Line Items] Financing Receivable With Related Allowance Recorded Investment Financing receivable with related allowance recorded investment. Recorded Investment, With a specific allowance recorded Debt securities available-for-sale: OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract] Schedule of Changes in Fair Value of Plan Assets [Table Text Block] Schedule of Changes in Purchase Price of Assets Acquired and The Liabilities Assumed Financing Receivable, Modified, Weighted-Average Term Increase from Modification Weighted-average term extension (in months) Variable Interest Entity, Not Primary Beneficiary [Member] Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, after Year 5 Through 10 Held-to-maturity debt securities, Weighted-average yield, After 5 Years through 10 Years Other liabilities Other Liabilities Other Liabilities, Total Retirement Benefits [Text Block] Benefit Plans Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common stock, par value Financing Receivable, Modified [Table Text Block] Loans Identified as TDRs Us government securities and mortgage backed and collateralized securities issued by direct governmental entity or government-sponsored entity. Us Government Securities And Mortgage Backed And Collateralized Securities Issued By Direct Governmental Entity Or Government Sponsored Entity [Member] Us Government Securities and Mortgage Backed and Collateralized Securities Issued By Direct Governmental Entity or Government-Sponsored Entity [Member] Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract] Defined benefit plans: Grantor Trusts [Member] Grantor Trusts [Member] Grantor trusts. Continuous unrealized loss position twelve months or longer aggregate losses accumulated in investments. Securities Continuous Unrealized Loss Position Twelve Months Or Longer Aggregate Losses Accumulated In Investments 12 months or more, Unrealized Losses US Government Corporations and Agencies Securities [Member] U.S. Government Sponsored Entities and Agencies [Member] Preferred Stock, Dividends Per Share, Declared Preferred dividends declared, per share Treasury stock common and preferred stock. Treasury Stock Common and Preferred Stock [Member] Treasury Stock [Member] Expected average percentage of national unemployment in future Expected Average Percentage Of National Unemployment In Future Expected average percentage of national unemployment in future. Summary of Aging Analysis of Portfolio Loans Restructured Summary of Aging Analysis of Portfolio Loans Restructured [Table Text Block] Summary of aging analysis of portfolio loans restructured. Deposits, Money Market Deposits Money market Segment Reporting [Text Block] Business Segments Derivative Instruments and Hedging Activities Disclosure [Abstract] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Debt Security Category [Axis] Debt Security Category Trading Symbol Trading Symbol Equity Method Investment, Nonconsolidated Investee [Domain] Customer list and other intangible assets acquired Customer List And Other Intangible Assets Acquired Customer list and other intangible assets acquired. Revenue from Contract with Customer, Including Assessed Tax NON-INTEREST INCOME Total trust fees/Total service charges on deposits Subsequent Event [Table] Schedule of Impaired Financing Receivable [Table] Schedule Of Impaired Financing Receivable [Table] Entity Emerging Growth Company Entity Emerging Growth Company Revenue Recognition [Abstract] Additional Paid-in Capital [Member] Capital Surplus [Member] Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) Provision for loan commitments Receivables [Abstract] Fair Value Measurement [Domain] Fair Value Measurement Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Held for Sale Business combination, recognized identifiable assets acquired and liabilities assumed, loans held for sale. Loans held for sale Depositary shares. Depositary Shares [Member] Depositary Shares Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations. Amount of expenses associated with business combination merger activities. Excludes expenses related to an asset retirement obligation. Restructuring And Merger Related Charges Restructuring and merger-related expense Merger-related and restructuring Debt Securities, Held-to-Maturity, Allowance for Credit Loss Ending balance Beginning balance Allowance for credit losses, held-to-maturity debt securities Allowance for credit losses, held-to-maturity debt securities Debt Securities, Held-to-maturity, Allowance for Credit Loss, Total Portion at Fair Value Measurement [Member] [Default] Portion at Fair Value Measurement [Member] Deposits: Deposits [Abstract] U.S. Treasury [Member] US Treasury Securities [Member] US Treasury Securities [Member] Business Combination [Table] Revision of Prior Period [Axis] Revision of Prior Period Cover [Abstract] Defined Benefit Plan, Interest Cost Interest cost on projected benefit obligation Number of limited partnerships held Number Of Limited Partnerships Held Number of limited partnerships held. Segment Reporting, Other Segment Item, Amount Other segment items Non-credit discount on PCD Financing Receivable, Purchased with Credit Deterioration, Discount (Premium) Non-credit discount on PCD Payment Delay and Term Extension [Member] Payment Delay and Term Extension [Member] Payment delay and term extension. Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Reserve on accrued interest related to individually-evaluated loans Reserve on accrued interest related to individually evaluvated loans. Reserve on Accrued Interest Related to Individually Evaluated Loans Professional Fees Professional services Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated other comprehensive income Accumulated other comprehensive loss Debt and Equity Securities, FV-NI [Line Items] Schedule of Trading Securities and Other Trading Assets [Line Items] Costs and payments related to employee benefits such as health insurance, pension expense and contributions and other postretirement benefits expense. Employee Benefits Employee benefits Employee benefits (Non-interest expense) Debt Securities, Held-to-Maturity, Change in Method, Credit Loss Expense (Reversal) Impact of adopting ASC 326 Intangible Asset, Finite-Lived, Amortization Expense Amortization of intangible assets Amortization of Intangible Assets, Total Amortization of intangibles Stock Issued During Period, Value, Acquisitions Stock issued for Premier Financial Corp. ("PFC") acquisition Current-period gross charge-offs [Member] Current-period gross charge-offs [Member] Other real estate owned and repossessed assets. Other Real Estate Owned And Repossessed Assets Table [Text Block] Summary of Other Real Estate Owned and Repossessed Assets Additional Paid in Capital Additional Paid in Capital, Total Capital surplus Financing Receivable, Allowance for Credit Loss [Table] Schedule Of Financing Receivable Allowance For Credit Losses [Table] Customer-Related Intangible Assets [Member] Customer-Related Intangible Assets [Member] Fair Value Disclosures [Abstract] Cash and Cash Equivalent Cash and due from banks Cash and Cash Equivalents, at Carrying Value, Total Cash and Cash Equivalents, at Carrying Value, Beginning Balance Cash and Cash Equivalents, at Carrying Value, Ending Balance Cash and due from banks, including interest bearing amounts of $644,813 and $751,249, respectively Financing Receivable Related Allowance Financing receivable related allowance. Total impaired loans, Related Allowance Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification Out Of Accumulated Other Comprehensive Income [Table] Equity Method Investment, Nonconsolidated Investee [Axis] Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Related income tax effect Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income Loss [Table] Financing Receivable Purchased With Credit Deterioration Allowance Acquisition Date Decreased Amount Financing receivable purchased with credit deterioration allowance acquisition date decreased amount. Financing receivable purchased with credit deterioration allowance acquisition date decreased amount Net Cash (Used in) Provided by Financing Activities Net cash (used in) provided by financing activities Revenue recognition disclosure. Revenue Recognition Disclosure [Text Block] Revenue Recognition Provision for credit losses. Provision For Credit Losses Total provision for credit losses - loans and loan commitments Provision for credit losses on loans and loan commitments Large amount of nonaccrual loans, outstanding, minimum loan amount per borrower. Large Amount Of Nonaccrual Loans Outstanding Minimum Loan Amount Per Borrower Borrowers with large amount of loans outstanding, minimum amount of loans per borrower Fair Value, Nonrecurring [Member] Nonrecurring Fair Value Measurements [Member] Fair Value, Measurements, Nonrecurring [Member] Net income available to common shareholders Net income available to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Interest Rate Swaps and Caps [Member] Interest Rate Swap [Member] Interest Rate Swaps [Member] Corporate Overhead Expenses Corporate overhead expenses. Corporate overhead expenses Credit offerings by the bank to customer in which the customer has either not completed the closing or accepted the offer. Loans Approved But Not Closed Loans approved but not closed Entity Filer Category Entity Filer Category Debt Securities, Available-for-Sale, Maturity, Rolling within One Year, Weighted Average Yield Available-for-sale debt securities, Weighted-average yield, Within One Year Financing Receivable Nonaccrual With Allowance Unpaid Principal Balance Financing receivable nonaccrual with allowance unpaid principal balance. Unpaid Principal Balance, With a specific allowance recorded Amount of allowance for credit losses with specific allowance related to recorded investment. Impaired Financing Receivable With Specific Allowance Related Allowance, With a specific allowance recorded Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Segment reporting, codm, profit (loss) measure, how used, description Interest Expense, Operating and Nonoperating [Abstract] INTEREST EXPENSE 2026 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Property, Plant and Equipment, Net, Beginning Balance Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Premises and equipment, net Property, Plant and Equipment, Net, Total Property, Plant and Equipment, Net, Ending Balance 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. Revenue from Contract with Customer, Excluding Assessed Tax Annual sales of borrowers Revenue from Contract with Customer, Excluding Assessed Tax, Total Intangible Assets Goodwill And Other Assets [Table] Intangible Assets Goodwill And Other Assets [Table] Intangible Assets Goodwill And Other Assets [Table] Financing Receivable, Modified [Table] Schedule Of Financing Receivable Troubled Debt Restructurings [Table] Shares, Outstanding Ending Balance, shares Beginning Balance, shares Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Rolling within One Year Total held-to-maturity debt securities at amortized cost, Within one year Derivative Asset, Statement of Financial Position [Extensible Enumeration] Financing Receivable, Non Purchased with Credit Deterioration, Amortized Cost of Acquired Loans Financing receivable, non purchased with credit deterioration, amortized cost of acquired loans. Amortized cost of non-PCD loans Commercial and industrial excluding paycheck protection program. Commercial And Industrial Excluding Paycheck Protection Program [Member] Commercial and Industrial [Member] Document Information [Line Items] Document Information [Line Items] Segment Reporting [Abstract] Other Interest and Dividend Income Other interest income Summary of significant accounting policies. Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Financing Receivable, Revolving, Converted to Term Loan Revolving Loans Converted to Term Amortized Cost Basis by Origination Year 2020 Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year Amortized Cost Basis by Origination Year 2018 Amortized Cost Basis by Origination Year 2023/2022 Entity Address, Postal Zip Code Entity Address, Postal Zip Code Statement of Financial Position [Abstract] Local Phone Number Local Phone Number President and Chief Executive Officer [Member] President and Chief Executive Officer.