WesBanco (WSBC) 10-Q 2 May 24 2024 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2024	Apr. 25, 2024
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Entity Registrant Name	WESBANCO, INC.
Entity Central Index Key	0000203596
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding		59,423,197
Entity Shell Company	false
Entity File Number	001-39442
Entity Incorporation, State or Country Code	WV
Entity Tax Identification Number	55-0571723
Entity Address, Address Line One	1 Bank Plaza
Entity Address, City or Town	Wheeling
Entity Address, State or Province	WV
Entity Address, Postal Zip Code	26003
City Area Code	304
Local Phone Number	234-9000
Document Quarterly Report	true
Document Transition Report	false
Common Stock
Document Information [Line Items]
Trading Symbol	WSBC
Title of 12(b) Security	Common Stock $2.0833 Par Value
Security Exchange Name	NASDAQ
Depositary Shares
Document Information [Line Items]
Trading Symbol	WSBCP
Title of 12(b) Security	Depositary Shares (each representing 1/40th interest in a share of 6.75% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series A)
Security Exchange Name	NASDAQ

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
ASSETS
Cash and due from banks, including interest bearing amounts of $370,729 and $436,879, respectively	$ 509,669	$ 595,383
Securities:
Equity securities, at fair value	13,074	12,320
Available-for-sale debt securities, at fair value	2,119,272	2,194,329
Held-to-maturity debt securities (fair values of $1,052,444 and $1,069,159, respectively)	1,190,010	1,199,527
Allowance for credit losses, held-to-maturity debt securities	(183)	(192)
Net held-to-maturity debt securities	1,189,827	1,199,335
Total securities	3,322,173	3,405,984
Loans held for sale	12,472	16,354
Portfolio loans, net of unearned income	11,873,167	11,638,461
Allowance for credit losses - loans	(129,190)	(130,675)
Net portfolio loans	11,743,977	11,507,786
Premises and equipment, net	232,630	233,571
Accrued interest receivable	78,564	77,435
Goodwill and other intangible assets, net	1,130,175	1,132,267
Bank-owned life insurance	357,099	355,033
Other assets	385,976	388,561
Total Assets	17,772,735	17,712,374
Deposits:
Non-interest bearing demand	3,938,610	3,962,592
Interest bearing demand	3,529,691	3,463,443
Money market	2,189,769	2,017,713
Savings deposits	2,499,466	2,493,254
Certificates of deposit	1,339,237	1,231,702
Total deposits	13,496,773	13,168,704
Federal Home Loan Bank borrowings	1,100,000	1,350,000
Other short-term borrowings	72,935	105,893
Subordinated debt and junior subordinated debt	279,136	279,078
Total borrowings	1,452,071	1,734,971
Accrued interest payable	15,929	11,121
Other liabilities	269,600	264,516
Total Liabilities	15,234,373	15,179,312
SHAREHOLDERS' EQUITY
Preferred stock, no par value, 1,000,000 shares authorized; 150,000 shares 6.75% non-cumulative perpetual preferred stock, Series A, liquidation preference $150,000,000, issued and outstanding at March 31, 2024 and December 31, 2023, respectively	144,484	144,484
Common stock, $2.0833 par value; 100,000,000 shares authorized; 68,081,306 shares issued; 59,395,777 and 59,376,435 shares outstanding at March 31, 2024 and December 31, 2023, respectively	141,834	141,834
Capital surplus	1,636,964	1,635,859
Retained earnings	1,154,307	1,142,586
Treasury stock (8,685,529 and 8,704,871 shares - at cost, respectively)	(302,264)	(302,995)
Accumulated other comprehensive loss	(234,922)	(226,693)
Deferred benefits for directors	(2,041)	(2,013)
Total Shareholders' Equity	2,538,362	2,533,062
Total Liabilities and Shareholders' Equity	$ 17,772,735	$ 17,712,374

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Interest bearing deposits, banks	$ 370,729,000	$ 436,879,000
Held-to-maturity securities, fair values	$ 1,052,444,000	$ 1,069,159,000
Preferred stock, no par value
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	150,000	150,000
Preferred stock, shares outstanding	150,000	150,000
6.75% non-cumulative perpetual preferred stock, Series A, liquidation preference	$ 150,000,000	$ 150,000,000
Common stock, par value	$ 2.0833	$ 2.0833
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	68,081,306	68,081,306
Common stock, shares outstanding	59,395,777	59,376,435
Treasury stock, shares	8,685,529	8,704,871

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
INTEREST AND DIVIDEND INCOME
Loans, including fees	$ 166,974	$ 133,406
Interest and dividends on securities:
Taxable	17,404	19,086
Tax-exempt	4,586	4,790
Total interest and dividends on securities	21,990	23,876
Other interest income	6,369	3,273
Total interest and dividend income	195,333	160,555
INTEREST EXPENSE
Interest bearing demand deposits	25,590	11,106
Money market deposits	16,114	4,252
Savings deposits	7,667	4,000
Certificates of deposit	10,247	1,203
Total interest expense on deposits	59,618	20,561
Federal Home Loan Bank borrowings	17,000	11,300
Other short-term borrowings	674	418
Subordinated debt and junior subordinated debt	4,075	3,944
Total interest expense	81,367	36,223
NET INTEREST INCOME	113,966	124,332
Provision for credit losses	4,014	3,577
Net interest income after provision for credit losses	109,952	120,755
NON-INTEREST INCOME
Trust fees	8,082	7,494
Service charges on deposits	6,784	6,170
Digital banking income	4,704	4,605
Net swap fee and valuation income	1,563	799
Net securities brokerage revenue	2,548	2,576
Bank-owned life insurance	2,067	1,959
Mortgage banking income	693	426
Net securities gains	537	145
Net gain on other real estate owned and other assets	154	232
Other income	3,497	3,247
Total non-interest income	30,629	27,653
NON-INTEREST EXPENSE
Salaries and wages	42,997	41,952
Employee benefits	12,184	12,060
Net occupancy	6,623	6,643
Equipment and software	10,008	9,063
Marketing	1,885	2,325
FDIC insurance	3,448	2,884
Amortization of intangible assets	2,092	2,301
Restructuring and merger-related expense		3,153
Other operating expenses	17,954	15,744
Total non-interest expense	97,191	96,125
Income before provision for income taxes	43,390	52,283
Provision for income taxes	7,697	9,942
Net income	35,693	42,341
Preferred stock dividends	2,531	2,531
Net income available to common shareholders	$ 33,162	$ 39,810
EARNINGS PER COMMON SHARE
Basic	$ 0.56	$ 0.67
Diluted	$ 0.56	$ 0.67
AVERAGE COMMON SHARES OUTSTANDING
Basic	59,382,758	59,217,711
Diluted	59,523,679	59,375,053
DIVIDENDS DECLARED PER COMMON SHARE	$ 0.36	$ 0.35

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 35,693	$ 42,341
Debt securities available-for-sale:
Net change in unrealized (losses) gains on debt securities available-for-sale	(10,903)	36,610
Related income tax effect	2,785	(8,782)
Net securities losses reclassified into earnings		151
Related income tax effect	(59)	(37)
Net effect on other comprehensive (loss) income for the period	(8,177)	27,942
Defined benefit plans:
Amortization of net (gain) loss and prior service costs	(101)	98
Related income tax effect	49	(23)
Net effect on other comprehensive (loss) income for the period	(52)	75
Total other comprehensive (loss) income	(8,229)	28,017
Comprehensive income	$ 27,464	$ 70,358

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock	Capital Surplus [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Deferred Benefits for Directors [Member]
Beginning Balance at Dec. 31, 2022	$ 2,426,662	$ 144,484	$ 141,834	$ 1,635,877	$ 1,077,675	$ (308,964)	$ (262,416)	$ (1,828)
Beginning Balance, shares at Dec. 31, 2022			59,198,963
Net income	42,341				42,341
Other comprehensive loss	28,017						28,017
Comprehensive income	70,358
Common dividends declared	(20,561)				(20,561)
Preferred dividends declared	(2,531)				(2,531)
Stock issued for dividend reinvestment					0	0
Stock issued for dividend reinvestment, shares			0
Treasury shares acquired	(52)					(52)
Treasury shares acquired, shares			(1,394)
Stock options exercised	103			(34)		137
Stock options exercised, shares			4,441
Restricted stock granted				(1,372)		1,372
Restricted stock granted, shares			44,559
Stock compensation expense	1,585			1,585
Deferred benefits for directors- net	(107)			5				(112)
Ending Balance at Mar. 31, 2023	2,475,457	144,484	$ 141,834	1,636,061	1,096,924	(307,507)	(234,399)	(1,940)
Ending Balance, shares at Mar. 31, 2023			59,246,569
Beginning Balance at Dec. 31, 2023	2,533,062	144,484	$ 141,834	1,635,859	1,142,586	(302,995)	(226,693)	(2,013)
Beginning Balance, shares at Dec. 31, 2023			59,376,435
Net income	35,693				35,693
Other comprehensive loss	(8,229)						(8,229)
Comprehensive income	27,464
Common dividends declared	(21,179)				(21,179)
Preferred dividends declared	(2,531)				(2,531)
Stock issued for dividend reinvestment					(262)	262
Stock issued for dividend reinvestment, shares			7,180
Treasury shares acquired	(86)					(86)
Treasury shares acquired, shares			(3,033)
Stock options exercised	100			(74)		174
Stock options exercised, shares			4,764
Restricted stock granted				(381)		381
Restricted stock granted, shares			10,431
Stock compensation expense	1,547			1,547
Deferred benefits for directors- net	(15)			13				(28)
Ending Balance at Mar. 31, 2024	$ 2,538,362	$ 144,484	$ 141,834	$ 1,636,964	$ 1,154,307	$ (302,264)	$ (234,922)	$ (2,041)
Ending Balance, shares at Mar. 31, 2024			59,395,777

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]
Common dividends declared, per share	$ 0.36	$ 0.35
Preferred dividends declared, per share	$ 16.875	$ 16.875

Consolidated Condensed Statemen

Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
OPERATING ACTIVITIES
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 64,636	$ 10,891
INVESTING ACTIVITIES
Net increase in loans held for investment	(239,643)	(186,782)
Available-for-sale debt securities:
Proceeds from sales	0	20,498
Proceeds from maturities, prepayments and calls	64,332	77,887
Purchases of securities	(2,000)
Held-to-maturity debt securities:
Proceeds from maturities, prepayments and calls	9,008	8,756
Purchases of premises and equipment – net	(2,763)	(12,233)
Net cash used in investing activities	(171,066)	(91,874)
FINANCING ACTIVITIES
Increase (decrease) in deposits	328,173	(257,528)
Proceeds from Federal Home Loan Bank borrowings	800,000	1,280,000
Repayment of Federal Home Loan Bank borrowings	(1,050,000)	(705,000)
Decrease in other short-term borrowings	(32,958)	(23,893)
Principal repayments of finance lease obligations	(806)	(464)
Dividends paid to common shareholders	(21,176)	(20,560)
Dividends paid to preferred shareholders	(2,531)	(2,531)
Treasury shares purchased - net	14	51
Net cash provided by financing activities	20,716	270,075
Net (decrease) increase in cash, cash equivalents and restricted cash	(85,714)	189,092
Cash, cash equivalents and restricted cash at beginning of the period	595,383	408,411
Cash, cash equivalents and restricted cash at end of the period	509,669	597,503
SUPPLEMENTAL DISCLOSURES
Interest paid on deposits and other borrowings	76,605	33,288
Transfers of loans to other real estate owned	$ 45	$ 79

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 35,693	$ 42,341

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Rule 10b5-1 Arrangement Modified	false
Non-Rule 10b5-1 Arrangement Modified	false

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of presentation — The accompanying unaudited interim financial statements of Wesbanco, Inc. and its consolidated subsidiaries (“Wesbanco”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2023. Wesbanco’s interim financial statements have been prepared following the significant accounting policies disclosed in Note 1 of the Notes to the Consolidated Financial Statements of its 2023 Annual Report on Form 10-K filed with the Securities and Exchange Commission, as well as with the policy changes indicated below. In the opinion of management, the accompanying interim financial information reflects all adjustments, including normal recurring adjustments, necessary to present fairly Wesbanco’s financial position and results of operations for each of the interim periods presented. Certain prior period amounts have been reclassified to conform to the current period presentation. Such reclassifications had no impact on Wesbanco’s net income and shareholders’ equity. Results of operations for interim periods are not necessarily indicative of the results of operations that may be expected for a full year. Recent accounting pronouncements— The Financial Accounting Standards Board (“FASB”) issued Accounting Standards Updates (“ASU”) as noted below. ASU 2024-02 - Codification Improvements—Amendments to Remove References to the Concepts Statements In March 2024, the FASB issued ASU 2024-02, “Codification Improvements—Amendments to Remove References to the Concepts Statements.” The removal of all references to Concepts Statements in the guidance will simplify the Codification and draw a distinction between authoritative and nonauthoritative literature. For Wesbanco, the amendments in this Update are effective for fiscal years beginning after December 15, 2024. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2024-01 – Compensation – Stock Compensation (Topic 718) In March 2024, the FASB issued ASU 2024-01, “Stock Compensation (Topic 718).” The amendments in this Update are designed to improve GAAP by adding an illustrative example that includes four fact patterns to demonstrate how an entity should apply the scope guidance in paragraph 718-10-15-3 to determine whether a profits interest award should be accounted for in accordance with Topic 718. The illustrative example is intended to reduce (1) complexity in determining whether a profits interest award is subject to the guidance in Topic 718 and (2) existing diversity in practice. For Wesbanco, the amendments are effective for annual periods beginning after December 15, 2024, and interim periods within those annual periods. Early adoption is permitted for both interim and annual financial statements that have not yet been issued or made available for issuance. If an entity adopts the amendments in an interim period, it should adopt them as of the beginning of the annual period that includes that interim period. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2023-09 – Income Taxes (Topic 740): Improvements to Income Tax Disclosures In December 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740)." The amendments in this Update related to the rate reconciliation and income taxes paid disclosures and are designed to improve the transparency of income tax disclosures by requiring (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. For Wesbanco, the amendments are effective for annual periods beginning after December 15, 2024. Early adoption is permitted for annual financial statements that have not yet been issued or made available for issuance. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2023-08 – Intangibles-Goodwill and Other Crypto Assets (Subtopic 350-60): Accounting for and Disclosure of a Crypto Asset In December 2023, the FASB issued ASU 2023-08, "Intangibles-Goodwill and Other Crypto Assets (Subtopic 350-60)." The amendments in this Update require that an entity measure crypto assets at fair value in the statement of financial position each reporting period and recognize changes from remeasurement in net income. The amendments also require that an entity provide enhanced disclosures for both annual and interim reporting periods to provide investors with relevant information to analyze and assess the exposure and risk of significant individual crypto asset holdings. In addition, fair value measurement aligns the accounting required for holders of crypto assets with the accounting for entities that are subject to certain industry-specific guidance (such as investment companies) and eliminates the requirement to test those assets for impairment, thereby reducing the associated cost and complexity of applying the current guidance. For Wesbanco, the amendments are effective beginning after December 15, 2024, including interim periods within those fiscal years. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements, as Wesbanco holds no crypto assets. ASU 2023-07—Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures In November 2023, the FASB issued ASU 2023-07, “Improvements to Reportable Segment Disclosures (Topic 280).” The amendments in this Update improve financial reporting by requiring disclosure of incremental segment information on an annual and interim basis for all public entities to enable investors to develop more decision-useful financial analyses. The amendments in this Update do not change how a public entity identifies its operating segments, aggregates those operating segments, or applies the quantitative thresholds to determine its reportable segments. For Wesbanco, the amendments are effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2023-06 - Disclosure Improvements: Codification Amendments in Response to the SEC’s Disclosure Update and Simplification Initiative In October 2023, the FASB issued ASU 2023-06, "Disclosure Improvements." For entities subject to the SEC’s existing disclosure requirements and for entities required to file or furnish financial statements with or to the SEC in preparation for the sale of or for purposes of issuing securities that are not subject to contractual restrictions on transfer, the effective date for each amendment will be the date on which the SEC’s removal of that related disclosure from Regulation S-X or Regulation S-K becomes effective. If by June 30, 2027, the SEC has not removed the applicable requirement from Regulation S-X or Regulation S-K, the pending content of the related amendment will be removed from the Codification and will not become effective for any entity. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2023-05 – Business Combinations—Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement In August 2023, the FASB issued ASU 2023-05, "Business Combinations - Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement," under which an entity that qualifies as either a joint venture or a corporate joint venture as defined in the FASB Accounting Standards Codification ("ASC") master glossary is required to apply a new basis of accounting upon the formation of the joint venture. Specifically, the ASU provides that a joint venture or a corporate joint venture (collectively, “joint ventures”) must initially measure its assets and liabilities at fair value on the formation date. For Wesbanco, the amendments are effective for all joint ventures within the ASU’s scope that are formed on or after January 1, 2025 . Early adoption is permitted in any annual or interim period as of the beginning of the related fiscal year. The adoption of this pronouncement is no t expected to have a material impact on the Consolidated Financial Statements. ASU 2023-02 – Investments Equity Method and Joint Ventures (Topic 323) In March 2023, the FASB issued ASU 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. ASU 2023-02 allows reporting entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. The ASU’s amendments “remove the specialized guidance for [low-income-housing tax credit] investments that are not accounted for using the proportional amortization method and instead require that those LIHTC investments be accounted for using the guidance in other [GAAP].” For Wesbanco, the amendments were effective on January 1, 2024 . The adoption of this pronouncement did no t have a material impact on the Consolidated Financial Statements. ASU 2023-01 - Leases (Topic 842): Common Control Arrangements In March 2023, the FASB issued ASU 2023-01, Leases (Topic 842): Common Control Arrangements. ASU 2023-01 amends certain provisions of ASC 842 that apply to arrangements between related parties under common control. Additionally, ASU 2023-01 amends the accounting for leasehold improvements in common-control arrangements for all entities. For Wesbanco, the amendments were effective on January 1, 2024 . The adoption of this pronouncement did no t have a material impact on the Consolidated Financial Statements. ASU 2022-04 - Liabilities – Supplier Finance Programs (Sub-topic 405-50) In September 2022, the FASB issued ASU 2022-04, “Liabilities—Supplier Finance Programs (Subtopic 405-50).” The amendments in this ASU require that a buyer in a supplier finance program disclose sufficient information about the program to allow a user of financial statements to understand the program’s nature, activity during the period, changes from period to period, and potential magnitude. To achieve that objective, the buyer should disclose qualitative and quantitative information about its supplier finance programs. For Wesbanco, this update was effective beginning on January 1, 2023, except for the amendment on rollforward information, which was effective on January 1, 2024 . The adoption of this full pronouncement did no t have a material impact on the Consolidated Financial Statements. ASU 2022-03 - Fair Value Measurement (Topic 820) In June 2022, the FASB issued ASU 2022-03, "Fair Value Measurement (Topic 820).” The amendments in this ASU clarify that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security, and therefore, is not considered in measuring fair value. Furthermore, the amendments to this ASU clarify that an entity cannot, as a separate unit of account, recognize and measure a contractual sale restriction. The update to this ASU requires the following disclosures for equity securities: (1) the fair value of equity securities subject to contractual sale restrictions reflected in the balance sheet; (2) the nature and remaining duration of the restriction(s) and; (3) the circumstances that could cause a lapse in the restriction(s). The amendments in this Update were effective on January 1, 2024 . The adoption of this pronouncement did no t have a material impact on the Consolidated Financial Statements.

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Earnings Per Common Share	NOTE 2. EARNINGS PER COMMON SHARE Earnings per common share are calculated as follows: For the Three Months (unaudited, in thousands, except shares and per share amounts) 2024 2023 Numerator for both basic and diluted earnings per common share: Net income available to common shareholders $ 33,162 $ 39,810 Denominator: Total average basic common shares outstanding 59,382,758 59,217,711 Effect of dilutive stock options and other stock compensation 140,921 157,342 Total diluted average common shares outstanding 59,523,679 59,375,053 Earnings per common share - basic $ 0.56 $ 0.67 Earnings per common share - diluted $ 0.56 $ 0.67 As of March 31, 2024 and 2023 , 567,251 and 483,011 options to purchase shares were not included in the diluted share computation for the three months ended March 31, 2024 and 2023, respectively, because the exercise price was greater than the average market price of a common share, and, therefore, the effect would be antidilutive. As of March 31, 2024 , 12,000 contingently issuable shares were estimated to be awarded under the 2022 total shareholder return ("TSR") plan and were included in the diluted calculation as stock performance targets had been met. No shares from the 2023 and 2024 plans were included because the effect would be antidilutive as performance targets were not met. As of March 31, 2023 , 42,624 contingently issuable shares were estimated to be awarded under the 2022 and 2021 TSR plans, as stock performance targets had been met as of such date and therefore those shares were included in the diluted calculation. No shares related to the 2023 plan were included because the effect would be antidilutive. In addition, performance-based restricted stock ("PBRS") compensation totaling 87,135 and 61,510 shares were estimated to be awarded as of March 31, 2024 and March 31, 2023 , respectively.

Securities

Securities	3 Months Ended
	Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Securities	NOTE 3. SECURITIES The following table presents the fair value and amortized cost of available-for-sale and held-to-maturity debt securities: March 31, 2024 December 31, 2023 (unaudited, in thousands) Amortized Gross Gross Fair Amortized Gross Gross Fair Available-for-sale debt securities U.S. Government sponsored entities and agencies $ 234,707 $ — $ ( 32,998 ) $ 201,709 $ 238,676 $ — $ ( 30,310 ) $ 208,366 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 1,849,231 46 ( 276,658 ) 1,572,619 1,897,511 47 ( 267,874 ) 1,629,684 Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 265,195 38 ( 5,386 ) 259,847 274,220 11 ( 5,924 ) 268,307 Obligations of states and political subdivisions 76,635 36 ( 3,384 ) 73,287 78,819 167 ( 2,861 ) 76,125 Corporate debt securities 11,965 — ( 155 ) 11,810 11,962 — ( 115 ) 11,847 Total available-for-sale debt securities $ 2,437,733 $ 120 $ ( 318,581 ) $ 2,119,272 $ 2,501,188 $ 225 $ ( 307,084 ) $ 2,194,329 Held-to-maturity debt securities U.S. Government sponsored entities and agencies $ 3,533 $ — $ ( 342 ) $ 3,191 $ 3,587 $ — $ ( 313 ) $ 3,274 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 37,408 — ( 3,222 ) 34,186 38,893 — ( 3,017 ) 35,876 Obligations of states and political subdivisions 1,128,828 356 ( 133,972 ) 995,212 1,136,779 852 ( 127,518 ) 1,010,113 Corporate debt securities 20,241 — ( 386 ) 19,855 20,268 — ( 372 ) 19,896 Total held-to-maturity debt securities (1) $ 1,190,010 $ 356 $ ( 137,922 ) $ 1,052,444 $ 1,199,527 $ 852 $ ( 131,220 ) $ 1,069,159 Total debt securities $ 3,627,743 $ 476 $ ( 456,503 ) $ 3,171,716 $ 3,700,715 $ 1,077 $ ( 438,304 ) $ 3,263,488 (1) Total held-to-maturity debt securities are presented on the balance sheet net of their allowance for credit losses totaling $ 0.2 million at March 31, 2024 and December 31, 2023 , respectively. At March 31, 2024 and December 31, 2023 , there were no holdings of any one issuer, other than U.S. government sponsored entities and its agencies, in an amount greater than 10 % of Wesbanco’s shareholders’ equity. Equity securities, of which $ 10.5 million consist of investments in various mutual funds held in grantor trusts formed in connection with the Company’s deferred compensation plan, are recorded at fair value, and totaled $ 13.1 million and $ 12.3 million at March 31, 2024 and December 31, 2023, respectively. The following table presents the amortized cost and fair value of available-for-sale and held-to-maturity debt securities by contractual maturity date at March 31, 2024. Actual maturities will differ from contractual maturities because borrowers may have the right to call or prepay debt obligations with or without prepayment penalties. Mortgage-backed securities and collateralized mortgage obligations are classified in the table below based on their contractual maturity date; however, regular principal payments and prepayments of principal are received on a monthly basis. (unaudited, in thousands) Amortized Cost Fair Value Available-for-sale debt securities Within one year $ 25,261 $ 24,946 After 1 year through 5 years 159,144 154,948 After 5 years through 10 years 307,040 290,268 After 10 years 1,946,288 1,649,110 Total available-for-sale debt securities $ 2,437,733 $ 2,119,272 Held-to-maturity debt securities Within one year $ 24,865 $ 24,695 After 1 year through 5 years 111,641 109,756 After 5 years through 10 years 489,993 451,150 After 10 years 563,511 466,843 Total held-to-maturity debt securities $ 1,190,010 $ 1,052,444 Total debt securities $ 3,627,743 $ 3,171,716 Securities with an aggregate carrying value of $ 2.2 billion and $ 2.1 billion at March 31, 2024 and December 31, 2023, respectively, were pledged as security for public and trust funds, and securities sold under agreements to repurchase. Proceeds from the sale of available-for-sale securities for the three months ended March 31, 2023 totaled $ 20.5 million . There were no security sales that occurred in the three months ended March 31, 2024. Net unrealized losses on available-for-sale securities included in accumulated other comprehensive income, net of tax, as of March 31, 2024 and December 31, 2023 were $ 241.4 million and $ 233.2 million , respectively. The following table presents the gross realized gains and losses on sales and calls of available-for-sale and held-to-maturity debt securities, as well as gains and losses on equity securities from both sales and market adjustments, for the three months ended March 31, 2024 and 2023, respectively. All gains and losses presented in the table below are included in the net securities gains (losses) line item of the consolidated income statement. For those equity securities relating to the key officer and director deferred compensation plan, the corresponding change in the obligation to the participant is recognized in employee benefits expense. For the Three Months (unaudited, in thousands) 2024 2023 Debt securities: Gross realized gains $ — $ 64 Gross realized losses — ( 197 ) Net losses on debt securities — ( 133 ) Equity securities: Net unrealized gains recognized on securities still held 537 278 Net securities gains $ 537 $ 145 The corporate and municipal bonds in Wesbanco’s held-to-maturity debt portfolio are analyzed quarterly to determine if an allowance for current expected credit losses is warranted. Wesbanco uses a database of historical financials of all corporate and municipal issuers and actual historic default and recovery rates on rated and non-rated transactions to estimate expected credit losses on an individual security basis. The expected credit losses are adjusted quarterly and are recorded in an allowance for expected credit losses on the balance sheet, which is deducted from the amortized cost basis of the held-to-maturity portfolio as a contra asset. The losses are recorded on the consolidated income statement in the provision for credit losses. Accrued interest receivable on held-to-maturity securities, which was $ 8.6 million and $ 8.8 million as of March 31, 2024 and December 31, 2023 , respectively, is excluded from the estimate of credit losses. Held-to-maturity investments in U.S. Government sponsored entities and agencies as well as mortgage-backed securities and collateralized mortgage obligations, which are all either issued by a direct governmental entity or a government-sponsored entity, have no historical evidence supporting expected credit losses; therefore, Wesbanco has estimated these losses at zero , and will monitor this assumption in the future for any economic or governmental policies that could affect this assumption. The following table provides a roll-forward of the allowance for credit losses on held-to-maturity securities for the three months ended March 31, 2024 and 2023: Allowance for Credit Losses By Category For the Three Months Ended March 31, 2024 and 2023 Residential mortgage -backed securities and collateralized mortgage obligations Obligations of U.S. Government of government states and Corporate sponsored sponsored entities political debt (unaudited, in thousands) entities and agencies and agencies subdivisions Securities Total Balance at December 31, 2023 $ — $ — $ 160 $ 32 $ 192 Current period provision (1) — — — ( 9 ) ( 9 ) Write-offs — — — — — Recoveries — — — — — Balance at March 31, 2024 $ — $ — $ 160 $ 23 $ 183 . Balance at December 31, 2022 $ — $ — $ 167 $ 53 $ 220 Current period provision (1) — — ( 6 ) ( 2 ) ( 8 ) Write-offs — — — — — Recoveries — — — — — Balance at March 31, 2023 $ — $ — $ 161 $ 51 $ 212 (1) The total provision for credit losses on held-to-maturity securities is reported in the consolidated statements of income in the provision for credit losses line item, which also includes the provision for credit losses - loans and loan commitments. For more information on the provision relating to loans and loan commitments, please see Note 4, "Loans and the Allowance for Credit Losses." The following tables provide information on unrealized losses on available-for-sale debt securities that have been in an unrealized loss position for less than twelve months and twelve months or more, for which an allowance for credit losses has not been recorded, as of March 31, 2024 and December 31, 2023, respectively: March 31, 2024 Less than 12 months 12 months or more Total (unaudited, dollars in thousands) Fair Unrealized # of Fair Unrealized # of Fair Unrealized # of U.S. Government sponsored entities and agencies $ — $ — — $ 201,709 $ ( 32,998 ) 45 $ 201,709 $ ( 32,998 ) 45 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies — — — 1,568,530 ( 276,658 ) 466 1,568,530 ( 276,658 ) 466 Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies — — — 243,531 ( 5,386 ) 60 243,531 ( 5,386 ) 60 Obligations of states and political subdivisions 8,811 ( 61 ) 10 58,392 ( 3,323 ) 97 67,203 ( 3,384 ) 107 Corporate debt securities 6,478 ( 22 ) 4 4,831 ( 133 ) 1 11,309 ( 155 ) 5 Total $ 15,289 $ ( 83 ) 14 $ 2,076,993 $ ( 318,498 ) 669 $ 2,092,282 $ ( 318,581 ) 683 December 31, 2023 Less than 12 months 12 months or more Total (dollars in thousands) Fair Unrealized # of Fair Unrealized # of Fair Unrealized # of U.S. Government sponsored entities and agencies $ 18 $ ( 1 ) 1 $ 208,348 $ ( 30,309 ) 45 $ 208,366 $ ( 30,310 ) 46 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies — — — 1,625,144 ( 267,874 ) 467 1,625,144 ( 267,874 ) 467 Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 5,520 ( 31 ) 1 251,765 ( 5,893 ) 60 257,285 ( 5,924 ) 61 Obligations of states and political subdivisions 10,387 ( 86 ) 19 49,002 ( 2,775 ) 79 59,389 ( 2,861 ) 98 Corporate debt securities 4,482 ( 18 ) 3 7,365 ( 97 ) 3 11,847 ( 115 ) 6 Total $ 20,407 $ ( 136 ) 24 $ 2,141,624 $ ( 306,948 ) 654 $ 2,162,031 $ ( 307,084 ) 678 Unrealized losses on debt securities in the table above represent temporary fluctuations resulting from changes in market rates in relation to fixed yields. Unrealized losses in the available-for-sale portfolio are accounted for as an adjustment, net of taxes, to other comprehensive income in shareholders’ equity. Wesbanco does not believe the securities presented above are impaired due to reasons of credit quality, as substantially all debt securities are rated above investment grade and all are paying principal and interest according to their contractual terms. Wesbanco does not intend to sell, nor is it more likely than not that it will be required to sell, loss position securities prior to recovery of their cost; therefore, management believes the unrealized losses detailed above do not require an allowance for credit losses relating to these securities to be recognized. Securities that do not have readily determinable fair values and for which Wesbanco does not exercise significant influence are carried at cost. Cost method investments consist primarily of Federal Home Loan Bank (“FHLB”) of Pittsburgh stock totaling $ 51.9 million and $ 62.0 million at March 31, 2024 and December 31, 2023, respectively, and are included in other assets in the Consolidated Balance Sheets. Cost method investments are evaluated for impairment whenever events or circumstances suggest that their carrying value may not be recoverable.

Loans and the Allowance for Cre

Loans and the Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Loans and the Allowance for Credit Losses	NOTE 4. LOANS AND THE ALLOWANCE FOR CREDIT LOSSES The recorded investment in loans is presented in the Consolidated Balance Sheets net of deferred loan fees and costs, and discounts on purchased loans. Net deferred loan costs were $ 11.8 million and $ 11.5 million at March 31, 2024 and December 31, 2023 , respectively. The unaccreted discount on purchased loans from acquisitions was $ 12.7 million at March 31, 2024 and $ 13.5 million at December 31, 2023. March 31, December 31, (unaudited, in thousands) 2024 2023 Commercial real estate: Land and construction $ 1,087,649 $ 1,055,865 Improved property 5,667,284 5,509,583 Total commercial real estate 6,754,933 6,565,448 Commercial and industrial 1,683,172 1,670,659 Residential real estate 2,469,357 2,438,574 Home equity 740,973 734,219 Consumer 224,732 229,561 Total portfolio loans 11,873,167 11,638,461 Loans held for sale 12,472 16,354 Total loans $ 11,885,639 $ 11,654,815 Allowance for Credit Losses The allowance for credit losses under the current expected credit losses methodology ("CECL") is calculated utilizing the probability of default ("PD")/ loss given default ("LGD"), which is then discounted to net present value. PD is the probability the asset will default within a given time frame and LGD is the percentage of the asset not expected to be collected due to default. The primary macroeconomic drivers of the quantitative model include forecasts of national unemployment and interest rates, as well as modeling adjustments for changes in prepayment speeds, loan risk grades, portfolio mix, concentrations and loan growth. At March 31, 2024 , the primary drivers of the allowance model calculation were loan growth, macroeconomic variables, prepayment speeds, qualitative factors for distressed industries, the current rate environment and changes in risk grading. The forecast was based upon a probability weighted approach which is designed to incorporate loss projections from a baseline, upside and downside economy. Due to the nonlinearity of credit losses to the economy, the asymmetry is best captured by evaluating multiple economic scenarios through a probability weighted approach. At quarter-end, national unemployment was projected to be 4.3 %, and subsequently increase to an average of 4.7 % over the remainder of the forecast period. In addition to the quantitative and qualitative changes noted above, the allowance is reflective of $ 5.9 million in net charge-offs recorded during the first quarter of 2024. Accrued interest receivable for loans was $ 63.2 million and $ 62.2 million at March 31, 2024 and December 31, 2023 , respectively. Wesbanco made an accounting policy election to exclude accrued interest from the measurement of the allowance for credit losses because the Company has a policy in place to reverse or write-off accrued interest when loans are placed on non-accrual. However, Wesbanco does have a $ 0.1 million reserve on the accrued interest related to loan modifications allowed under the Coronavirus Aid, Relief and Economic Security ("CARES") Act due to the timing and nature of these modifications. Accrued interest related to COVID-19 loan modifications as permitted under the CARES Act was $ 15.1 million and $ 15.6 million at March 31, 2024 and December 31, 2023, respectively. The following tables summarize changes in the allowance for credit losses applicable to each category of the loan portfolio: Allowance for Credit Losses By Category For the Three Months Ended March 31, 2024 and 2023 (unaudited, in thousands) Commercial Commercial Commercial Residential Home Consumer Deposit Total Balance at December 31, 2023 Allowance for credit $ 7,123 $ 59,351 $ 36,644 $ 21,218 $ 1,017 $ 3,956 $ 1,366 $ 130,675 Allowance for credit 6,894 — 429 1,276 5 — — 8,604 Total beginning allowance for credit 14,017 59,351 37,073 22,494 1,022 3,956 1,366 139,279 Provision for credit losses: Provision for loan losses 858 ( 3,621 ) 5,806 650 25 538 194 4,450 Provision for loan commitments ( 568 ) — 124 9 6 — — ( 429 ) Total provision for credit 290 ( 3,621 ) 5,930 659 31 538 194 4,021 Charge-offs ( 813 ) ( 58 ) ( 4,810 ) ( 135 ) ( 216 ) ( 1,098 ) ( 453 ) ( 7,583 ) Recoveries — 432 401 34 198 455 128 1,648 Net (charge-offs) recoveries ( 813 ) 374 ( 4,409 ) ( 101 ) ( 18 ) ( 643 ) ( 325 ) ( 5,935 ) Balance at March 31, 2024 Allowance for credit 7,168 56,104 38,041 21,767 1,024 3,851 1,235 129,190 Allowance for credit 6,326 — 553 1,285 11 — — 8,175 Total ending allowance for credit $ 13,494 $ 56,104 $ 38,594 $ 23,052 $ 1,035 $ 3,851 $ 1,235 $ 137,365 Balance at December 31, 2022 Allowance for credit $ 6,737 $ 52,659 $ 31,540 $ 18,208 $ 4,234 $ 3,127 $ 1,285 $ 117,790 Allowance for credit 6,025 — — 2,215 128 — — 8,368 Total beginning allowance for credit 12,762 52,659 31,540 20,423 4,362 3,127 1,285 126,158 Provision for credit losses: Provision for loan losses ( 1,440 ) 2,508 ( 2,783 ) 4,407 141 97 ( 103 ) 2,827 Provision for loan commitments ( 51 ) — 797 ( 10 ) 23 — — 759 Total provision for credit ( 1,491 ) 2,508 ( 1,986 ) 4,397 164 97 ( 103 ) 3,586 Charge-offs ( 222 ) ( 1,355 ) ( 320 ) 13 ( 258 ) ( 776 ) ( 401 ) ( 3,319 ) Recoveries 73 276 134 75 80 622 140 1,400 Net (charge-offs) recoveries ( 149 ) ( 1,079 ) ( 186 ) 88 ( 178 ) ( 154 ) ( 261 ) ( 1,919 ) Balance at March 31, 2023 Allowance for credit 5,148 54,088 28,571 22,703 4,197 3,070 921 118,698 Allowance for credit 5,974 — 797 2,205 151 — — 9,127 Total ending allowance for credit $ 11,122 $ 54,088 $ 29,368 $ 24,908 $ 4,348 $ 3,070 $ 921 $ 127,825 (1) Deposit overdrafts of $ 4.1 million and $ 3.6 million are included in total portfolio loans for the periods ending March 31, 2024 and March 31, 2023, respectively. (2) The total provision for credit losses - loans and loan commitments is reported in the consolidated statements of income in the provision for credit losses line item, which also includes the provision for credit losses on held-to-maturity securities. For more information on the provision relating to held-to-maturity securities, please see Note 3, "Securities." The following tables present the allowance for credit losses and recorded investments in loans by category, as of each period-end: Allowance for Credit Losses and Recorded Investment in Loans (unaudited, in thousands) Commercial Commercial Commercial Residential Home Consumer Deposit Total March 31, 2024 Allowance for credit losses: Loans individually-evaluated $ — $ 5,591 $ — $ — $ — $ — $ — $ 5,591 Loans collectively-evaluated 7,168 50,513 38,041 21,767 1,024 3,851 1,235 123,599 Loan commitments (2) 6,326 — 553 1,285 11 — — 8,175 Total allowance for credit $ 13,494 $ 56,104 $ 38,594 $ 23,052 $ 1,035 $ 3,851 $ 1,235 $ 137,365 Portfolio loans: Individually-evaluated for credit $ — $ 36,701 $ 45 $ — $ — $ — $ — $ 36,746 Collectively-evaluated for credit 1,087,649 5,630,583 1,683,127 2,469,357 740,973 224,732 — 11,836,421 Total portfolio loans $ 1,087,649 $ 5,667,284 $ 1,683,172 $ 2,469,357 $ 740,973 $ 224,732 $ — $ 11,873,167 December 31, 2023 Allowance for credit losses: Loans individually-evaluated $ — $ 5,745 $ — $ — $ — $ — $ — $ 5,745 Loans collectively-evaluated 7,123 53,606 36,644 21,218 1,017 3,956 1,366 124,930 Loan commitments (2) 6,894 — 429 1,276 5 — — 8,604 Total allowance for credit $ 14,017 $ 59,351 $ 37,073 $ 22,494 $ 1,022 $ 3,956 $ 1,366 $ 139,279 Portfolio loans: Individually-evaluated for credit $ — $ 36,929 $ 116 $ — $ — $ — $ — $ 37,045 Collectively-evaluated for credit 1,055,865 5,472,654 1,670,543 2,438,574 734,219 229,561 — 11,601,416 Total portfolio loans $ 1,055,865 $ 5,509,583 $ 1,670,659 $ 2,438,574 $ 734,219 $ 229,561 $ — $ 11,638,461 (1) Deposit overdrafts of $ 4.1 million and $ 4.7 million are included in total portfolio loans for the periods ending March 31, 2024 and December 31, 2023, respectively. (2) For additional detail relating to loan commitments, see Note 11, "Commitments and Contingent Liabilities." Commercial Loan Risk Grades Commercial loan risk grades are determined based on an evaluation of the relevant characteristics of each loan, assigned at inception and adjusted thereafter at any time to reflect changes in the risk profile throughout the life of each loan. The primary factors used to determine the risk grade are the sufficiency, reliability and sustainability of the primary source of repayment and overall financial strength of the borrower. The rating system more heavily weights the debt service coverage, leverage and loan to value factors to derive the risk grade. Other factors that are considered at a lesser weighting include management, industry or property type risks, payment history, collateral or guarantees. Commercial real estate – land and construction consists of loans to finance investments in vacant land, land development, construction of residential housing, and construction of commercial buildings. Commercial real estate – improved property consists of loans for the purchase or refinance of all types of improved owner-occupied and investment properties. Factors that are considered in assigning the risk grade vary depending on the type of property financed. The risk grade assigned to construction and development loans is based on the overall viability of the project, the experience and financial capacity of the developer or builder to successfully complete the project, project specific and market absorption rates and comparable property values, and the amount of pre-sales for residential housing construction or pre-leases for commercial investment property. The risk grade assigned to commercial investment property loans is based primarily on the adequacy of the net operating income generated by the property to service the debt (“debt service coverage”), the loan to appraised value, the type, quality, industry and mix of tenants, and the terms of leases. The risk grade assigned to owner-occupied commercial real estate is based primarily on global debt service coverage and the leverage of the business, but may also consider the industry in which the business operates, the business’ specific competitive advantages or disadvantages, collateral margins and the quality and experience of management. Commercial and industrial (“C&I”) loans consist of revolving lines of credit to finance accounts receivable, inventory and other general business purposes; term loans to finance fixed assets other than real estate, and letters of credit to support trade, insurance or governmental requirements for a variety of businesses. Most C&I borrowers are privately-held companies with annual sales up to $ 100 million. Primary factors that are considered in risk rating C&I loans include debt service coverage and leverage. Other factors including operating trends, collateral coverage along with management experience are also considered. Pass loans are those that exhibit a history of positive financial results that are at least comparable to the average for their industry or type of real estate. The primary source of repayment is acceptable and these loans are expected to perform satisfactorily during most economic cycles. Pass loans typically have no significant external factors that are expected to adversely affect these borrowers more than others in the same industry or property type. Any minor unfavorable characteristics of these loans are outweighed or mitigated by other positive factors including but not limited to adequate secondary or tertiary sources of repayment, including guarantees. Criticized loans, considered as compromised, have potential weaknesses that deserve management's close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the bank's credit position at some future date. Criticized loans are not adversely classified by the banking regulators and do not expose the bank to sufficient risk to warrant adverse classification. Classified loans, considered as substandard and doubtful, are equivalent to the classifications used by banking regulators. Substandard loans are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the bank will sustain some loss if the deficiencies are not corrected. These loans may or may not be reported as non-accrual. Doubtful loans have all the weaknesses inherent in those classified substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently known facts, conditions, and values, highly questionable and improbable. These loans are reported as non-accrual. The following tables summarize commercial loans by their assigned risk grade: Commercial Loans by Internally Assigned Risk Grade (unaudited, in thousands) Commercial Commercial Commercial Total As of March 31, 2024 Pass $ 1,084,975 $ 5,491,663 $ 1,588,033 $ 8,164,671 Criticized - compromised 2,457 103,648 65,431 171,536 Classified - substandard 217 71,973 29,708 101,898 Classified - doubtful — — — — Total $ 1,087,649 $ 5,667,284 $ 1,683,172 $ 8,438,105 As of December 31, 2023 Pass $ 1,053,359 $ 5,337,394 $ 1,586,683 $ 7,977,436 Criticized - compromised 2,497 107,473 73,204 183,174 Classified - substandard 9 64,716 10,772 75,497 Classified - doubtful — — — — Total $ 1,055,865 $ 5,509,583 $ 1,670,659 $ 8,236,107 Residential real estate, home equity and consumer loans are not assigned internal risk grades other than as required by regulatory guidelines that are based primarily on the age of past due loans. Wesbanco primarily evaluates the credit quality of residential real estate, home equity and consumer loans based on repayment performance and historical loss rates. The aggregate amount of residential real estate, home equity and consumer loans classified as substandard in accordance with regulatory guidelines was $ 21.3 million at March 31, 2024 and $ 20.0 million at December 31, 2023 , of which $ 4.9 million and $ 4.6 million were accruing, for each period, respectively. These loans are not included in the tables above. In addition, $ 62.8 million and $ 21.2 million of unfunded commercial loan commitments are also not included in the tables above at March 31, 2024 and December 31, 2023, respectively. Past Due and Nonperforming Loans The following tables summarize the age analysis of all categories of loans: Age Analysis of Loans (unaudited, in thousands) Current 30-59 60-89 90 Days Total Total 90 Days Due and As of March 31, 2024 Commercial real estate: Land and construction $ 1,087,649 $ — $ — $ — $ — $ 1,087,649 $ — Improved property 5,651,347 2,852 1,226 11,859 15,937 5,667,284 408 Total commercial real estate 6,738,996 2,852 1,226 11,859 15,937 6,754,933 408 Commercial and industrial 1,679,157 1,440 633 1,942 4,015 1,683,172 135 Residential real estate 2,458,403 3,160 478 7,316 10,954 2,469,357 3,151 Home equity 730,521 4,869 2,249 3,334 10,452 740,973 1,223 Consumer 220,302 2,905 1,019 506 4,430 224,732 491 Total portfolio loans 11,827,379 15,226 5,605 24,957 45,788 11,873,167 5,408 Loans held for sale 12,472 — — — — 12,472 — Total loans $ 11,839,851 $ 15,226 $ 5,605 $ 24,957 $ 45,788 $ 11,885,639 $ 5,408 Nonperforming loans included above are as follows: Non-accrual loans $ 11,054 $ 1,612 $ 704 $ 19,549 $ 21,865 $ 32,919 As of December 31, 2023 Commercial real estate: Land and construction $ 1,055,865 $ — $ — $ — $ - $ 1,055,865 $ — Improved property 5,490,946 4,416 3,627 10,594 18,637 5,509,583 1,899 Total commercial real estate 6,546,811 4,416 3,627 10,594 18,637 6,565,448 1,899 Commercial and industrial 1,663,985 640 1,255 4,779 6,674 1,670,659 3,184 Residential real estate 2,429,200 1,572 2,471 5,331 9,374 2,438,574 2,602 Home equity 724,293 4,691 1,198 4,037 9,926 734,219 1,407 Consumer 223,989 3,833 1,178 561 5,572 229,561 546 Total portfolio loans 11,588,278 15,152 9,729 25,302 50,183 11,638,461 9,638 Loans held for sale 16,354 — — — — 16,354 — Total loans $ 11,604,632 $ 15,152 $ 9,729 $ 25,302 $ 50,183 $ 11,654,815 $ 9,638 Nonperforming loans included above are as follows: Non-accrual loans $ 9,138 $ 1,300 $ 706 $ 15,664 $ 17,670 $ 26,808 The following tables summarize nonperforming loans: Nonperforming Loans March 31, 2024 December 31, 2023 Unpaid Unpaid Principal Recorded Related Principal Recorded Related (unaudited, in thousands) Balance (1) Investment Allowance Balance (1) Investment Allowance With no related specific allowance recorded: Commercial real estate: Land and construction $ 1,023 $ 210 $ — $ — $ — $ — Improved property 14,871 13,523 — 11,248 9,557 — Commercial and industrial 3,660 2,765 — 2,492 1,841 — Residential real estate 16,367 11,679 — 15,128 10,582 — Home equity 6,420 4,669 — 6,521 4,777 — Consumer 119 73 — 104 51 — Total nonperforming loans without a specific allowance 42,460 32,919 — 35,493 26,808 — Total nonperforming loans with a specific allowance — — — — — — Total nonperforming loans $ 42,460 $ 32,919 $ — $ 35,493 $ 26,808 $ — (1) The difference between the unpaid principal balance and the recorded investment generally reflects amounts that have been previously charged-off and fair market value adjustments on acquired nonperforming loans. Nonperforming Loans For the Three Months Ended March 31, 2024 March 31, 2023 Average Interest Average Interest Recorded Income Recorded Income (unaudited, in thousands) Investment Recognized Investment Recognized With no related specific allowance recorded: Commercial real estate: Land and construction $ 105 $ — $ 56 $ — Improved property 11,540 — 17,401 — Commercial and industrial 2,303 — 3,161 — Residential real estate 11,131 — 14,447 — Home equity 4,723 — 5,118 — Consumer 62 — 134 — Total nonperforming loans without a specific allowance 29,864 — 40,317 — With a specific allowance recorded: Commercial real estate: Land and construction — — — — Improved property — — — — Total nonperforming loans with a specific allowance — — — — Total nonperforming loans $ 29,864 $ — $ 40,317 $ — The following table presents the recorded investment in non-accrual loans: Non-accrual Loans (1) March 31, December 31, (unaudited, in thousands) 2024 2023 Commercial real estate: Land and construction $ 210 $ — Improved property 13,523 9,557 Total commercial real estate 13,733 9,557 Commercial and industrial 2,765 1,841 Residential real estate 11,679 10,582 Home equity 4,669 4,777 Consumer 73 51 Total $ 32,919 $ 26,808 (1) At March 31, 2024 , there were four borrowers with a loan balance greater than $ 1.0 million, which totaled $ 10.9 million, as compared to two borrowers with a loan balance greater than $ 1.0 million totaling $ 7.2 million at December 31, 2023 . Total non-accrual loans may include loans that are also restructured for borrowers experiencing financial difficulty. Such loans are also set forth in the following tables. Modifications for Borrowers Experiencing Financial Difficulty (following the adoption of ASU 2022-02) Tables in the following section exclude the financial effects of modifications for loans that were paid off or are otherwise no longer in the loan portfolio as of period end. The following table displays the details of portfolio loans that were modified during the three months ended March 31, 2024 and 2023 presented by loan category: For the Three Months Ended March 31, 2024 (unaudited, in thousands) Term Payment Total % of Commercial real estate - land and construction $ — $ — $ — - Commercial real estate - improved property 24,989 — 24,989 0.4 Commercial and industrial — 41 41 0.0 Residential real estate — 579 579 0.0 Home equity — 350 350 0.0 Consumer — 124 124 0.1 Total $ 24,989 $ 1,094 $ 26,083 0.2 For the Three Months Ended March 31, 2023 (unaudited, in thousands) Term Payment Total Percent of Commercial real estate - land and construction $ 6,000 $ — $ 6,000 0.8 Commercial real estate - improved property 3,738 — 3,738 0.1 Commercial and industrial 6,843 — 6,843 0.5 Residential real estate — 101 101 0.0 Home equity 8 283 291 0.0 Consumer — 34 34 0.0 Total $ 16,589 $ 418 $ 17,007 0.2 Unfunded loan commitments on modifications for borrowers experiencing financial difficulty ("MBEFDs") totaled $ 0.7 million for loans modified during the three months ended March 31, 2024 and $ 1.8 million for loans modified during the twelve months ended December 31, 2023 . These commitments are not included in the tables above. The following table summarizes the financial impacts of loan modifications and payment deferrals made to portfolio loans during the three months ended March 31, 2024 and 2023, presented by loan category: For the Three Months Ended March 31, 2024 For the Three Months Ended March 31, 2023 (unaudited, in thousands) Weighted-Average Weighted-Average Commercial real estate - land and construction — 3 Commercial real estate - improved property 9 34 Commercial and industrial — 4 Residential real estate — — Home equity — 120 Consumer — — There have been no MBEFDs which defaulted (defined as 90 days past due) after the loan was modified during the three months ended March 31, 2024 and 2023. The following table presents an aging analysis of portfolio loans by loan category that were modified during the twelve months prior to March 31, 2024. March 31, 2024 (unaudited, in thousands) 30-59 Days 60-89 Days 90 Days Total Current Total Commercial real estate - land and construction $ — $ — $ — $ — $ — $ — Commercial real estate - improved property — — — — 29,041 29,041 Commercial and industrial — — 41 41 8,531 8,572 Residential real estate 37 68 170 275 1,200 1,475 Home equity 14 — 233 247 1,016 1,263 Consumer 39 33 9 81 380 461 Total modified loans (1) $ 90 $ 101 $ 453 $ 644 $ 40,168 $ 40,812 (1) Represents balance at period end. The following tables summarize amortized cost basis loan balances by year of origination and credit quality indicator: Loans As of March 31, 2024 Amortized Cost Basis by Origination Year (unaudited, in thousands) 2024 2023 2022 2021 2020 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: land and construction Risk rating: Pass $ 24,606 $ 331,376 $ 379,849 $ 152,158 $ 24,478 $ 60,384 $ 62,496 $ 49,628 $ 1,084,975 Criticized - compromised — — — — — 14 280 2,163 2,457 Classified - substandard — 210 — — — 7 — — 217 Classified - doubtful — — — — — — — — — Total $ 24,606 $ 331,586 $ 379,849 $ 152,158 $ 24,478 $ 60,405 $ 62,776 $ 51,791 $ 1,087,649 Current-period gross charge-offs $ — $ 813 $ — $ — $ — $ — $ — $ — $ 813 Commercial real estate: improved property Risk rating: Pass $ 107,508 $ 500,262 $ 1,090,763 $ 576,509 $ 618,834 $ 2,165,451 $ 115,578 $ 316,758 $ 5,491,663 Criticized - compromised — 12,928 11,434 8,319 4,380 39,434 1,697 25,456 103,648 Classified - substandard — 1,906 5,493 776 2,326 61,438 — 34 71,973 Classified - doubtful — — — — — — — — — Total $ 107,508 $ 515,096 $ 1,107,690 $ 585,604 $ 625,540 $ 2,266,323 $ 117,275 $ 342,248 $ 5,667,284 Current-period gross charge-offs $ — $ — $ — $ — $ — $ 58 $ — $ — $ 58 Commercial and industrial Risk rating: Pass $ 60,297 $ 217,013 $ 226,435 $ 135,148 $ 68,852 $ 275,734 $ 546,174 $ 58,380 $ 1,588,033 Criticized - compromised — 1,276 1,174 254 1,387 38,277 15,626 7,437 65,431 Classified - substandard — 405 875 741 239 2,343 24,145 960 29,708 Classified - doubtful — — — — — — — — — Total $ 60,297 $ 218,694 $ 228,484 $ 136,143 $ 70,478 $ 316,354 $ 585,945 $ 66,777 $ 1,683,172 Current-period gross charge-offs $ — $ 274 $ 126 $ — $ 53 $ 325 $ — $ 4,032 $ 4,810 Residential real estate Loan delinquency: Current $ 34,392 $ 278,392 $ 393,426 $ 435,283 $ 182,098 $ 527,391 $ — $ 607,421 $ 2,458,403 30-59 days past due — — — — 339 2,728 — 93 3,160 60-89 days past due — — — — — 478 — — 478 90 days or more past due — — 791 34 168 5,087 — 1,236 7,316 Total $ 34,392 $ 278,392 $ 394,217 $ 435,317 $ 182,605 $ 535,684 $ — $ 608,750 $ 2,469,357 Current-period gross charge-offs $ — $ — $ — $ — $ — $ 77 $ — $ 58 $ 135 Home equity Loan delinquency: Current $ 11,894 $ 993 $ 1,676 $ 1,059 $ 1,840 $ 21,352 $ 689,877 $ 1,830 $ 730,521 30-59 days past due — 59 251 80 57 841 3,425 156 4,869 60-89 days past due — 700 217 — 14 1,308 3 7 2,249 90 days or more past due — — 222 177 657 1,954 — 324 3,334 Total $ 11,894 $ 1,752 $ 2,366 $ 1,316 $ 2,568 $ 25,455 $ 693,305 $ 2,317 $ 740,973 Current-period gross charge-offs $ — $ 20 $ 62 $ — $ 35 $ 72 $ 20 $ 7 $ 216 Consumer Loan delinquency: Current $ 19,019 $ 76,043 $ 52,536 $ 19,109 $ 10,962 $ 18,694 $ 23,939 $ — $ 220,302 30-59 days past due 86 709 950 779 183 193 5 — 2,905 60-89 days past due — 281 519 64 73 82 — — 1,019 90 days or more past due — 156 109 64 70 107 — — 506 Total $ 19,105 $ 77,189 $ 54,114 $ 20,016 $ 11,288 $ 19,076 $ 23,944 $ — $ 224,732 Current-period gross charge-offs $ — $ 189 $ 587 $ 213 $ 52 $ 57 $ — $ — $ 1,098 Loans As of December 31, 2023 Amortized Cost Basis by Origination Year (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: land and construction Risk rating: Pass $ 290,954 $ 349,549 $ 145,043 $ 54,172 $ 48,655 $ 35,917 $ 82,288 $ 46,781 $ 1,053,359 Criticized - compromised — — — — — 16 299 2,182 2,497 Classified - substandard — — — — — 9 — — 9 Classified - doubtful — — — — — — — — — Total $ 290,954 $ 349,549 $ 145,043 $ 54,172 $ 48,655 $ 35,942 $ 82,587 $ 48,963 $ 1,055,865 Current-period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ 222 $ 222 Commercial real estate: improved property Risk rating: Pass $ 494,142 $ 1,076,535 $ 603,354 $ 581,540 $ 514,523 $ 1,706,804 $ 103,467 $ 257,029 $ 5,337,394 Criticized - compromised — 16,270 8,630 4,387 5,185 44,861 2,373 25,767 107,473 Classified - substandard 1,921 517 417 2,416 23,472 35,939 — 34 64,716 Classified - doubtful — — — — — — — — — Total $ 496,063 $ 1,093,322 $ 612,401 $ 588,343 $ 543,180 $ 1,787,604 $ 105,840 $ 282,830 $ 5,509,583 Current-period gross charge-offs $ — $ — $ 372 $ — $ — $ 1,505 $ — $ — $ 1,877 Commercial and industrial Risk rating: Pass $ 238,427 $ 234,520 $ 136,998 $ 78,836 $ 39,259 $ 252,826 $ 541,400 $ 64,417 $ 1,586,683 Criticized - compromised 1,094 834 3,169 1,490 7,334 31,526 20,626 7,131 73,204 Classified - substandard 33 149 315 265 825 1,916 5,797 1,472 10,772 Classified - doubtful — — — — — — — — — Total $ 239,554 $ 235,503 $ 140,482 $ 80,591 $ 47,418 $ 286,268 $ 567,823 $ 73,020 $ 1,670,659 Current-period gross charge-offs $ 98 $ 205 $ 603 $ 353 $ 20 $ 463 $ — $ 541 $ 2,283 Residential real estate Loan delinquency: Current $ 277,790 $ 429,835 $ 445,322 $ 185,139 $ 86,149 $ 456,818 $ — $ 548,147 $ 2,429,200 30-59 days past due — — — — — 1,572 — — 1,572 60-89 days past due — — — 341 — 2,130 — — 2,471 90 days or more past due — 799 34 — 263 4,207 — 28 5,331 Total $ 277,790 $ 430,634 $ 445,356 $ 185,480 $ 86,412 $ 464,727 $ — $ 548,175 $ 2,438,574 Current-period gross charge-offs $ — $ — $ — $ — $ 5 $ 387 $ — $ — $ 392 Home equity Loan delinquency: Current $ 12,675 $ 1,235 $ 1,467 $ 1,571 $ 1,614 $ 22,484 $ 681,848 $ 1,399 $ 724,293 30-59 days past due 34 193 85 73 44 947 3,315 — 4,691 60-89 days past due 119 318 16 68 76 524 — 77 1,198 90 days or more past due — 213 — 737 230 2,527 — 330 4,037 Total $ 12,828 $ 1,959 $ 1,568 $ 2,449 $ 1,964 $ 26,482 $ 685,163 $ 1,806 $ 734,219 Current-period gross charge-offs $ — $ 139 $ 57 $ 29 $ 79 $ 615 $ 6 $ — $ 925 Consumer Loan delinquency: Current $ 84,526 $ 57,661 $ 21,592 $ 13,189 $ 10,958 $ 12,143 $ 23,916 $ 4 $ 223,989 30-59 days past due 699 1,526 952 343 162 119 32 — 3,833 60-89 days past due 191 616 195 112 5 59 — — 1,178 90 days or more past due 64 203 114 63 9 108 — — 561 Total $ 85,480 $ 60,006 $ 22,853 $ 13,707 $ 11,134 $ 12,429 $ 23,948 $ 4 $ 229,561 Current-period gross charge-offs $ 251 $ 1,921 $ 901 $ 301 $ 100 $ 247 $ 4 $ — $ 3,725 The following table summarizes other real estate owned and repossessed assets included in other assets: March 31, December 31, (unaudited, in thousands) 2024 2023 Other real estate owned $ 1,210 $ 1,207 Repossessed assets 264 290 Total other real estate owned and repossessed assets $ 1,474 $ 1,497 There were no residential real estate loans included in other real estate owned at both March 31, 2024 and December 31, 2023. At March 31, 2024 and December 31, 2023 , formal foreclosure proceedings were in process on residential real estate loans totaling $ 4.2 million and $ 4.0 million, respectively.

Investments In Limited Partners

Investments In Limited Partnerships	3 Months Ended
	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Investments in Limited Partnerships	NOTE 5. INVESTMENTS IN LIMITED PARTNERSHIPS Wesbanco is a limited partner in several tax-advantaged limited partnerships whose purpose is to invest in approved low-income housing investment tax credit projects. These investments are accounted for using the equity method of accounting and are included in other assets in the Consolidated Balance Sheets. The limited partnerships are considered to be variable interest entities ("VIEs") as they generally do not have equity investors with voting rights or have equity investors that do not provide sufficient financial resources to support their activities. The VIEs have not been consolidated because Wesbanco is not considered the primary beneficiary. All of Wesbanco’s investments in limited partnerships are privately held, and their market values are not readily available. As of March 31, 2024 and December 31, 2023 , Wesbanco had $ 30.7 million and $ 31.9 million, respectively, invested in these partnerships. Wesbanco also recognizes the unconditional unfunded equity commitments of $ 11.4 million and $ 13.9 million at March 31, 2024 and December 31, 2023, respectively, within other liabilities on the Consolidated Balance Sheets. Wesbanco classifies the amortization of the investment as a component of income tax expense (benefit) and proportionally amortizes the investment over the tax credit period. The amortization for the three months ended March 31, 2024 and 2023 was $ 1.2 million and $ 1.1 million, respectively. Tax benefits attributed to these partnerships include low-income housing and historic tax credits which are projected to total $ 4.4 million for 2024 , and totaled $ 3.8 million for 2023, which are also included in income tax expense. Wesbanco is also a limited partner in three other limited partnerships as of March 31, 2024. These provide seed money and capital to startup companies, and financing to low-income housing projects. As of both March 31, 2024 and December 31, 2023 , Wesbanco had $ 3.0 million invested in these partnerships, which are recorded in other assets using the equity method. Wesbanco included in operations under the equity method of accounting its share of the partnerships’ net income of $ 12 thousand and $ 11 thousand for the three months ended March 31, 2024 and 2023. The following table presents the scheduled equity commitments to be paid to the limited partnerships over the next five years and in the aggregate thereafter as of March 31, 2024: Year Amount 2024 $ 5,190 2025 2,944 2026 834 2027 819 2028 492 2029 and thereafter 1,141 Total $ 11,420

Derivatives and Hedging Activit

Derivatives and Hedging Activities	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	NOTE 6. DERIVATIVES AND HEDGING ACTIVITIES Risk Management Objective of Using Derivatives Wesbanco is exposed to certain risks arising from both its business operations and economic conditions. Wesbanco principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. Wesbanco manages economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities. Wesbanco’s existing interest rate derivatives result from a service provided to certain qualifying customers and, therefore, are not used to manage interest rate risk in Wesbanco’s assets or liabilities. Wesbanco manages a matched book with respect to its derivative instruments in order to minimize its net risk exposure resulting from such transactions. A matched book is when the Bank's assets and liabilities are equally distributed but also have similar maturities. Loan Swaps Wesbanco executes interest rate swaps and interest rate caps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps and caps are economically hedged by offsetting interest rate swaps and caps that Wesbanco executes with a third party, such that Wesbanco minimizes its net risk exposure resulting from such transactions. As the interest rate swaps and caps associated with this program do not meet the hedge accounting requirements of ASC 815, changes in the fair value of both the customer swaps and caps and the offsetting third-party swaps and caps are recognized directly in earnings. As of March 31, 2024 and December 31, 2023 , Wesbanco had 247 and 236 customer interest rate swaps and caps with an aggregate notional amount of $ 1.6 billion in both periods related to this program. Wesbanco recognized income for the related swap and cap fees of $ 0.8 million and $ 1.8 million for the three months ended March 31, 2024 and 2023, respectively. Risk participation agreements are entered into as financial guarantees of performance on interest rate swap derivatives. The purchased asset or sold liability allows Wesbanco to participate-in (fee received) or participate-out (fee paid) the risk associated with certain derivative positions executed by the borrower of the lead bank in a loan syndication. As of March 31, 2024 and December 31, 2023 , Wesbanco had 21 and 19 risk participation-in agreements with an aggregate notional amount of $ 223.5 million and $ 197.2 million, respectively. As of March 31, 2024 and December 31, 2023 , Wesbanco had five risk participation-out agreements with an aggregate notional amount of $ 40.7 million and $ 40.9 million, respectively. Mortgage Loans Held for Sale and Interest Rate Lock Commitments Certain residential mortgage loans are originated for sale in the secondary mortgage loan market. These loans are classified as held for sale and carried at fair value as Wesbanco has elected the fair value option. Fair value is determined based on rates obtained from the secondary market for loans with similar characteristics. Wesbanco sells loans to the secondary market on either a mandatory or best efforts basis. The loans sold on a mandatory basis are not committed to an investor until the loan is closed with the borrower. Wesbanco enters into forward to be announced (“TBA”) contracts to manage the interest rate risk between the lock commitment and the closing of the loan. The total balance of forward TBA contracts entered into was $ 26.5 million and $ 27.0 million at March 31, 2024 and December 31, 2023, respectively. The loans sold on a best efforts basis are committed to an investor simultaneous to the interest rate commitment with the borrower, and as a result, the Company does not enter into a separate forward TBA contract to offset the fair value risk as the investor accepts such risk in exchange for paying a lower premium on sale. Fair Values of Derivative Instruments on the Balance Sheet All derivatives are carried on the consolidated balance sheet at fair value. Derivative assets are classified in the consolidated balance sheet under other assets, and derivative liabilities are classified in the consolidated balance sheet under other liabilities. Changes in fair value are recognized in earnings. None of Wesbanco’s derivatives are designated in a qualifying hedging relationship under ASC 815. The table below presents the fair value of Wesbanco’s derivative financial instruments as well as their classification on the Balance Sheet as of March 31, 2024 and December 31, 2023: March 31, 2024 December 31, 2023 (unaudited, in thousands) Notional or Asset Liability Notional or Asset Liability Derivatives Loan Swaps: Interest rate swaps and caps $ 1,611,918 $ 78,211 $ 78,312 $ 1,573,152 $ 72,183 $ 73,083 Other contracts: Interest rate lock commitments 23,009 58 — 16,524 84 — Forward TBA contracts 26,500 — 3 27,000 — 205 Total derivatives $ 78,269 $ 78,315 $ 72,267 $ 73,288 Effect of Derivative Instruments on the Income Statement The table below presents the change in the fair value of the Company’s derivative financial instruments reflected within non-interest income on the consolidated income statement for the three months ended March 31, 2024 and 2023, respectively. For the Three Months (unaudited, in thousands) Location of Gain/(Loss) 2024 2023 Interest rate swaps and caps Net swap fee and valuation income $ 798 $ ( 1,039 ) Interest rate lock commitments Mortgage banking income ( 26 ) 187 Forward TBA contracts Mortgage banking income 48 ( 189 ) Total $ 820 $ ( 1,041 ) Credit-risk-related Contingent Features Wesbanco has agreements with its derivative counterparties that contain a provision, which provides that if Wesbanco defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then Wesbanco could also be declared in default on its derivative obligations. Wesbanco also has agreements with certain of its derivative counterparties that contain a provision where if Wesbanco fails to maintain its status as either a “well” or “adequately-capitalized” institution, then the counterparty could terminate the derivative positions and Wesbanco would be required to settle its obligations under the agreements. Dependent upon the net present value of the underlying swaps, Wesbanco has minimum collateral posting thresholds with certain of its derivative counterparties. If Wesbanco had breached any of these provisions at March 31, 2024, it could have been required to settle its obligations under the agreements at the termination value and would have been required to pay any additional amounts due in excess of amounts previously posted as collateral with the respective counterparties. In certain market situations, Wesbanco can also request collateral from the derivative counterparties. Due to the current higher interest rate environment, as of March 31, 2024 and December 31, 2023 , Wesbanco is holding net cash collateral from various derivative counterparties totaling $ 50.9 million and $ 26.0 million, respectively, within interest bearing deposit accounts.

Benefit Plans

Benefit Plans	3 Months Ended
	Mar. 31, 2024
Retirement Benefits [Abstract]
Benefit Plans	NOTE 7. BENEFIT PLANS The following table presents the net periodic pension income for Wesbanco’s Defined Benefit Pension Plan (the “Plan”) and the related components: For the Three Months (unaudited, in thousands) 2024 2023 Service cost – benefits earned during year $ 330 $ 350 Interest cost on projected benefit obligation 1,603 1,554 Expected return on plan assets ( 2,599 ) ( 2,750 ) Amortization of prior service cost ( 9 ) ( 9 ) Amortization of net loss 21 223 Net periodic pension income $ ( 654 ) $ ( 632 ) The service cost of $ 0.3 million and $ 0.4 million for the three months ended March 31, 2024 and 2023 , respectively, is included in salaries and wages, and periodic pension income of $ 1.0 million and $ 1.0 million for the three months ended March 31, 2024 and 2023, respectively, is included in employee benefits. The Plan covers all employees of Wesbanco and its subsidiaries who were hired on or before August 1, 2007 who satisfy minimum age and length of service requirements, and is not available to employees hired after such date. A minimum required contribution of $ 2.6 million is due in 2024 , which can be offset in whole or in part by the Plan's $ 64.2 million available credit balance. Wesbanco currently does no t expect to make a voluntary contribution to the Plan in 2024 .

Fair Value Measurement

Fair Value Measurement	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurement	NOTE 8. FAIR VALUE MEASUREMENT Fair value estimates are based on quoted market prices, if available, quoted market prices of similar assets or liabilities, or the present value of expected future cash flows and other valuation techniques. These valuations are significantly affected by discount rates, cash flow assumptions, and risk assumptions used. Therefore, fair value estimates may not be substantiated by comparison to independent markets and are not intended to reflect the proceeds that may be realizable in an immediate settlement of the instruments. Fair value is determined at one point in time and is not representative of future value. These amounts do not reflect the total value of a going concern organization. Management does not have the intention to dispose of a significant portion of its assets and liabilities, and therefore the unrealized gains or losses should not be interpreted as a forecast of future earnings and cash flows. The following is a discussion of assets and liabilities measured at fair value on a recurring basis and valuation techniques applied: Investment securities: The fair value of investment securities which are measured on a recurring basis are determined primarily by obtaining quoted prices on nationally recognized securities exchanges or matrix pricing, which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other similar securities. These securities are classified within level 1 or 2 in the fair value hierarchy. Positions that are not traded in active markets for which valuations are generated using assumptions not observable in the market or management’s best estimate are classified within level 3 of the fair value hierarchy. This includes certain specific municipal debt issues for which the credit quality and discount rate must be estimated. Loans held for sale: Loans held for sale are carried, in aggregate, at fair value as Wesbanco previously elected the fair value option. The use of a valuation model using quoted prices of similar instruments are significant inputs in arriving at the fair value and therefore loans held for sale are classified within level 2 of the fair value hierarchy. Derivatives: Wesbanco enters into interest rate swap agreements with qualifying commercial customers to meet their financing, interest rate and other risk management needs. These agreements provide the customer the ability to convert from variable to fixed interest rates. The credit risk associated with derivatives executed with customers is essentially the same as that involved in extending loans and is subject to normal credit policies and monitoring. Those interest rate swaps are economically hedged by offsetting interest rate swaps that Wesbanco executes with derivative counterparties in order to offset its exposure on the fixed components of the customer interest rate swap agreements. The interest rate swap agreement with the loan customer and with the counterparty is reported at fair value in other assets and other liabilities on the consolidated balance sheet with any resulting gain or loss recorded in current period earnings as other income and other expense. Wesbanco enters into forward TBA contracts to manage the interest rate risk between the loan commitments to the customer and the closing of the loan for loans that will be sold on a mandatory basis to secondary market investors. The forward TBA contract is reported at fair value in other assets and other liabilities on the consolidated balance sheet with any resulting gain or loss recorded in current period’s earnings as mortgage banking income. Wesbanco determines the fair value for derivatives using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects contractual terms of the derivative, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. Wesbanco incorporates credit valuation adjustments to appropriately reflect both its own non-performance risk and the respective counterparty’s non-performance risk in the fair value measurements, and therefore both the derivative asset and derivative liability are classified within level 2 of the fair value hierarchy. We may be required from time to time to measure certain assets and liabilities at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from the application of lower of cost or market accounting or write-downs of individual assets and liabilities. Collateral dependent loans: Collateral dependent loans are carried at the amortized cost basis less the specific allowance calculated under the Current Expected Credit Losses Accounting Standard. Collateral dependent loans are calculated using a cost basis approach or collateral value approach, and therefore are classified within level 3 of the fair value hierarchy. Other real estate owned and repossessed assets: Other real estate owned and repossessed assets are carried at the lower of the investment in the assets or the fair value of the assets less estimated selling costs. The use of independent appraisals and management’s best judgment are significant inputs in arriving at the fair value measure of the underlying collateral, and therefore other real estate owned and repossessed assets are classified within level 3 of the fair value hierarchy. The fair value amounts presented in the table below are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position. The following tables set forth Wesbanco’s financial assets and liabilities that were accounted for at fair value on a recurring and nonrecurring basis by level within the fair value hierarchy as of March 31, 2024 and December 31, 2023: March 31, 2024 Fair Value Measurements Using: March 31, Quoted Prices in Significant Significant (unaudited, in thousands) 2024 (level 1) (level 2) (level 3) Recurring fair value measurements Equity securities $ 13,074 $ 13,074 $ — $ — Available-for-sale debt securities U.S. Government sponsored entities and agencies 201,709 — 201,709 — Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 1,572,619 — 1,572,619 — Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 259,847 — 259,847 — Obligations of states and political subdivisions 73,287 — 72,144 1,143 Corporate debt securities 11,810 — 11,810 — Total available-for-sale debt securities $ 2,119,272 $ — $ 2,118,129 $ 1,143 Loans held for sale 12,472 — 12,472 — Other assets - interest rate swaps 78,211 — 78,211 — Total assets recurring fair value measurements $ 2,223,029 $ 13,074 $ 2,208,812 $ 1,143 Other liabilities - interest rate swaps $ 78,312 $ — $ 78,312 $ — Total liabilities recurring fair value measurements $ 78,312 $ — $ 78,312 $ — Nonrecurring fair value measurements Collateral dependent loans $ 18,289 $ — $ — $ 18,289 Other real estate owned and repossessed assets 1,474 — — 1,474 Total nonrecurring fair value measurements $ 19,763 $ — $ — $ 19,763 December 31, 2023 Fair Value Measurements Using: December 31, Quoted Prices in Significant Significant (in thousands) 2023 (level 1) (level 2) (level 3) Recurring fair value measurements Equity securities $ 12,320 $ 12,320 $ — $ — Available-for-sale debt securities U.S. Government sponsored entities and agencies 208,366 — 208,366 — Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 1,629,684 — 1,629,684 — Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 268,307 — 268,307 — Obligations of states and political subdivisions 76,125 — 74,958 1,167 Corporate debt securities 11,847 — 11,847 — Total available-for-sale debt securities $ 2,194,329 $ — $ 2,193,162 $ 1,167 Loans held for sale 16,354 — 16,354 — Other assets - interest rate swaps 72,183 — 72,183 — Total assets recurring fair value measurements $ 2,295,186 $ 12,320 $ 2,281,699 $ 1,167 Other liabilities - interest rate swaps $ 73,083 $ — $ 73,083 $ — Total liabilities recurring fair value measurements $ 73,083 $ — $ 73,083 $ — Nonrecurring fair value measurements Collateral dependent loans $ 18,273 $ — $ — $ 18,273 Other real estate owned and repossessed assets 1,497 — — 1,497 Total nonrecurring fair value measurements $ 19,770 $ — $ — $ 19,770 Wesbanco’s policy is to recognize transfers between levels as of the actual date of the event or change in circumstances that caused the transfer. There were no transfers between level 1, 2 or 3 for the three months ended March 31, 2024 or for the year ended December 31, 2023. The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which Wesbanco has utilized level 3 inputs to determine fair value: Quantitative Information about Level 3 Fair Value Measurements Fair Value Valuation Unobservable Range (Weighted (unaudited, in thousands) Estimate Techniques Input Average) March 31, 2024 Collateral dependent loans $ 18,289 Appraisal of collateral (1) Appraisal adjustments (2) ( 0.0 %)/( 0.0 %) Liquidation expenses (2) ( 8.0 %)/( 8.0 %) Other real estate owned and repossessed assets $ 1,474 Appraisal of collateral (1), (3) December 31, 2023 Collateral dependent loans $ 18,273 Appraisal of collateral (1) Appraisal adjustments (2) ( 0.0 %)/( 0.0 %) Liquidation expenses (2) ( 8.0 %)/( 8.0 %) Other real estate owned and repossessed assets $ 1,497 Appraisal of collateral (1), (3) (1) Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs, which are not identifiable. (2) Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range and weighted average of appraisal adjustments and liquidation expense are presented as a percent of the appraisal. (3) Includes estimated liquidation expenses and numerous dissimilar qualitative adjustments by management, which are not identifiable. The estimated fair values of Wesbanco’s financial instruments are summarized below: Fair Value Measurements at March 31, 2024 Carrying Fair Value Quoted Prices in Significant Significant (unaudited, in thousands) Amount Estimate (level 1) (level 2) (level 3) Financial Assets Cash and due from banks $ 509,669 $ 509,669 $ 509,669 $ — $ — Equity securities 13,074 13,074 13,074 — — Available-for-sale debt securities 2,119,272 2,119,272 — 2,118,129 1,143 Net held-to-maturity debt securities 1,189,827 1,052,444 — 1,052,184 260 Net loans 11,743,977 11,329,520 — — 11,329,520 Loans held for sale 12,472 12,472 — 12,472 — Other assets - interest rate derivatives 78,211 78,211 — 78,211 — Accrued interest receivable 78,564 78,564 78,564 — — Financial Liabilities Deposits 13,496,773 13,475,426 12,157,536 1,317,890 — Federal Home Loan Bank borrowings 1,100,000 1,098,495 — 1,098,495 — Other borrowings 72,935 68,622 68,622 — — Subordinated debt and junior subordinated debt 279,136 230,188 — 230,188 — Other liabilities - interest rate derivatives 78,312 78,312 — 78,312 — Accrued interest payable 15,929 15,929 15,929 — — Fair Value Measurements at December 31, 2023 Carrying Fair Value Quoted Prices in Significant Significant (in thousands) Amount Estimate (level 1) (level 2) (level 3) Financial Assets Cash and due from banks $ 595,383 $ 595,383 $ 595,383 $ — $ — Equity securities 12,320 12,320 12,320 — — Available-for-sale debt securities 2,194,329 2,194,329 — 2,193,162 1,167 Net held-to-maturity debt securities 1,199,335 1,069,159 — 1,068,896 263 Net loans 11,507,786 11,134,250 — — 11,134,250 Loans held for sale 16,354 16,354 — 16,354 — Other assets - interest rate derivatives 72,183 72,183 — 72,183 — Accrued interest receivable 77,435 77,435 77,435 — — Financial Liabilities Deposits 13,168,704 13,146,821 11,937,002 1,209,819 — Federal Home Loan Bank borrowings 1,350,000 1,349,217 — 1,349,217 — Other borrowings 105,893 103,057 103,057 — — Subordinated debt and junior subordinated debt 279,078 240,898 — 240,898 — Other liabilities - interest rate derivatives 73,083 73,083 — 73,083 — Accrued interest payable 11,121 11,121 11,121 — — The following methods and assumptions were used to measure the fair value of financial instruments recorded at cost on Wesbanco’s consolidated balance sheets: Cash and due from banks: The carrying amount for cash and due from banks is a reasonable estimate of fair value. Held-to-maturity debt securities: Fair values for debt securities held-to-maturity are determined in the same manner as investment securities, which are described above. Net loans: Fair values for loans are estimated in a valuation model using a discounted cash flow methodology. The discount rates take into account interest rates currently being offered to customers for loans with similar terms, the credit risk associated with the loan and other market factors, including liquidity. Wesbanco believes the discount rates are consistent with transactions occurring in the marketplace for both performing and distressed loan types. The carrying value is net of the allowance for loan losses and other associated premiums and discounts. Due to the significant judgment involved in evaluating credit quality, loans are classified within level 3 of the fair value hierarchy. Accrued interest receivable: The carrying amount of accrued interest receivable approximates its fair value . Deposits: The carrying amount is considered a reasonable estimate of fair value for demand, savings and other variable rate deposit accounts. The fair value of fixed maturity certificates of deposit is estimated by a discounted cash flow method using rates currently offered for deposits of similar remaining maturities. Federal Home Loan Bank borrowings: The fair value of FHLB borrowings is based on rates currently available to Wesbanco for borrowings with similar terms and remaining maturities. Other borrowings: The carrying amount of federal funds purchased and overnight sweep accounts generally approximate fair value. Other repurchase agreements are based on quoted market prices if available. If market prices are not available, for certain fixed and adjustable rate repurchase agreements, then quoted market prices of similar instruments are used. Subordinated debt and junior subordinated debt: The fair value of subordinated debt is determined primarily by obtaining quoted prices on nationally recognized securities exchanges or matrix pricing, which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other similar securities. These securities are classified within level 2 in the fair value hierarchy. Due to the pooled nature of junior subordinated debt owed to unconsolidated subsidiary trusts, which are not actively traded, estimated fair value is determined by using comparable corporate bond indices and swap rates from the financial services sector and factoring in the applicable credit spreads and optional early redemption provisions. Accrued interest payable: The carrying amount of accrued interest payable approximates its fair value. Off-balance sheet financial instruments: Off-balance sheet financial instruments consist of commitments to extend credit, including letters of credit. Fair values for commitments to extend credit are estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present credit standing of the counterparties. The estimated fair value of the commitments to extend credit and letters of credit are insignificant and therefore are not presented in the above tables.

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2024
Revenue Recognition [Abstract]
Revenue Recognition	NOTE 9. REVENUE RECOGNITION Interest income, net securities gains and bank-owned life insurance are not in scope of ASC 606, Revenue from Contracts with Customers . For the revenue streams in scope of ASC 606 - trust fees, service charges on deposits, net securities brokerage revenue, payment processing fees, digital banking income, net swap fee and valuation income, mortgage banking income and net gain on other real estate owned and other assets – there are no significant judgments related to the amount and timing of revenue recognition. The following table summarizes the point of revenue recognition and the income recognized for each of the revenue streams for the three months ended March 31, 2024 and 2023, respectively: Point of Revenue For the Three Months (unaudited, in thousands) Recognition 2024 2023 Revenue Streams Trust fees Trust account fees Over time $ 6,099 $ 5,605 WesMark fees Over time 1,983 1,889 Total trust fees 8,082 7,494 Service charges on deposits Commercial banking fees Over time 1,188 609 Personal service charges At a point in time and over time 5,596 5,561 Total service charges on deposits 6,784 6,170 Net securities brokerage revenue Annuity commissions At a point in time 1,972 2,046 Equity and debt security trades At a point in time 80 — Managed money Over time 254 283 Trail commissions Over time 242 247 Total net securities brokerage revenue 2,548 2,576 Payment processing fees (1) At a point in time and over time 829 871 Digital banking income At a point in time 4,704 4,605 Net swap fee and valuation income (2) At a point in time 1,563 799 Mortgage banking income At a point in time 693 426 Net gain on other real estate owned and other assets At a point in time and over time 154 232 (1) Included in other non-interest income. (2) The portion of this line item relating to the change in the fair value of the underlying swaps is not within the scope of ASC 606, and totaled gains (losses) of $ 0.8 million and ($ 1.0 ) million for the three months ended March 31, 2024 and 2023 , respectively.

Comprehensive Income_(Loss)

Comprehensive Income/(Loss)	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Comprehensive Income/(Loss)	NOTE 10. COMPREHENSIVE INCOME/(LOSS) The activity in accumulated other comprehensive income/(loss) for the three months ended March 31, 2024 and 2023 is as follows: Accumulated Other Comprehensive Income/(Loss) (1) (unaudited, in thousands) Defined Unrealized Total Balance at December 31, 2023 $ 6,515 $ ( 233,208 ) $ ( 226,693 ) Other comprehensive loss before reclassifications — ( 8,118 ) ( 8,118 ) Amounts reclassified from accumulated other comprehensive loss ( 52 ) ( 59 ) ( 111 ) Period change ( 52 ) ( 8,177 ) ( 8,229 ) Balance at March 31, 2024 $ 6,463 $ ( 241,385 ) $ ( 234,922 ) Balance at December 31, 2022 $ ( 535 ) $ ( 261,881 ) $ ( 262,416 ) Other comprehensive income before reclassifications — 27,828 27,828 Amounts reclassified from accumulated other comprehensive income 75 114 189 Period change 75 27,942 28,017 Balance at March 31, 2023 $ ( 460 ) $ ( 233,939 ) $ ( 234,399 ) (1) All amounts are net of tax. Related income tax expense or benefit is calculated using a combined Federal and State income tax rate approximating 24 % in both periods presented. The following table provides details about amounts reclassified from accumulated other comprehensive income for the three months ended March 31, 2024 and 2023: Details about Accumulated Other Comprehensive For the Three Months Affected Line Item in the Statement (unaudited, in thousands) 2024 2023 Debt securities available-for-sale (1) : Net securities losses reclassified into earnings $ — $ 151 Net securities gains/(losses) (Non-interest income) Related income tax effect ⁽²⁾ ( 59 ) ( 37 ) Provision for income taxes Net effect on accumulated other comprehensive ( 59 ) 114 Defined benefit plans (3) : Amortization of net loss and prior service costs ( 101 ) 98 Employee benefits (Non-interest expense) Related income tax effect ⁽²⁾ 49 ( 23 ) Provision for income taxes Net effect on accumulated other comprehensive ( 52 ) 75 Total reclassifications for the period $ ( 111 ) $ 189 (1) For additional detail related to unrealized gains on securities and related amounts reclassified from accumulated other comprehensive income, see Note 3, “Securities.” (2) Income tax expense or benefit is calculated using a combined Federal and State income tax rate approximating 24 % in both periods presented. (3) Included in the computation of net periodic pension cost. See Note 7, “Benefit Plans” for additional detail.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	NOTE 11. COMMITMENTS AND CONTINGENT LIABILITIES Commitments — In the normal course of business, Wesbanco offers off-balance sheet credit arrangements to enable its customers to meet their financing objectives. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the financial statements. Wesbanco’s exposure to credit losses in the event of non-performance by the other parties to the financial instruments for commitments to extend credit and standby letters of credit is limited to the contractual amount of those instruments. Wesbanco uses the same credit policies in making commitments and conditional obligations as for all other lending. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The allowance for credit losses associated with commitments was $ 8.2 million and $ 8.6 million at March 31, 2024 and December 31, 2023, respectively, and is included in other liabilities on the Consolidated Balance Sheets. Letters of credit are conditional commitments issued by banks to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements, including normal business activities, bond financing and similar transactions. Letters of credit are considered guarantees. The liability associated with letters of credit was $ 0.2 million as of March 31, 2024 and December 31, 2023. Contingent obligations to purchase loans funded by other entities include credit card guarantees, loans sold with recourse as well as obligations to the FHLB. Credit card guarantees are credit card balances not owned by Wesbanco, whereby the Bank guarantees the performance of the cardholder. The following table presents total commitments to extend credit, guarantees and various letters of credit outstanding: March 31, December 31, (unaudited, in thousands) 2024 2023 Lines of credit $ 3,991,363 $ 4,016,658 Loans approved but not closed 546,561 275,954 Overdraft limits 400,151 391,598 Letters of credit 41,812 38,929 Contingent obligations and other guarantees 9,809 15,037 Contingent Liabilities — Wesbanco is a party to various legal and administrative proceedings and claims. While any litigation contains an element of uncertainty, management does not believe that a material loss related to such proceedings or claims pending or known to be threatened is reasonably possible.

Business Segments

Business Segments	3 Months Ended
	Mar. 31, 2024
Segment Reporting [Abstract]
Business Segments	NOTE 12. BUSINESS SEGMENTS Wesbanco operates two reportable segments: community banking and trust and investment services. Wesbanco’s community banking segment offers services traditionally offered by full-service commercial banks, including commercial demand, individual demand and time deposit accounts, as well as commercial, mortgage and individual installment loans, and certain non-traditional offerings, such as insurance and securities brokerage services. The trust and investment services segment offers trust services as well as various alternative investment products including mutual funds. The market value of assets managed or held in custody by the trust and investment services segment was approximately $ 5.6 billion and $ 5.0 billion at March 31, 2024 and 2023, respectively. These assets are held by Wesbanco in fiduciary or agency capacities for their customers and therefore are not included as assets on Wesbanco’s Consolidated Balance Sheets. Condensed financial information by business segment is presented below: Trust and Community Investment (unaudited, in thousands) Banking Services Consolidated For the Three Months Ended March 31, 2024 Interest and dividend income $ 195,333 $ — $ 195,333 Interest expense 81,367 — 81,367 Net interest income 113,966 — 113,966 Provision for credit losses 4,014 — 4,014 Net interest income after provision for credit losses 109,952 — 109,952 Non-interest income 22,547 8,082 30,629 Non-interest expense 91,968 5,223 97,191 Income before provision for income taxes 40,531 2,859 43,390 Provision for income taxes 7,097 600 7,697 Net income 33,434 2,259 35,693 Preferred stock dividends 2,531 — 2,531 Net income available to common shareholders $ 30,903 $ 2,259 $ 33,162 For the Three Months Ended March 31, 2023 Interest and dividend income $ 160,555 $ — $ 160,555 Interest expense 36,223 — 36,223 Net interest income 124,332 — 124,332 Provision for credit losses 3,577 — 3,577 Net interest income after provision for credit losses 120,755 — 120,755 Non-interest income 20,159 7,494 27,653 Non-interest expense 91,617 4,508 96,125 Income before provision for income taxes 49,297 2,986 52,283 Provision for income taxes 9,315 627 9,942 Net income 39,982 2,359 42,341 Preferred stock dividends 2,531 — 2,531 Net income available to common shareholders $ 37,451 $ 2,359 $ 39,810 Total non-fiduciary assets of the trust and investment services segment were $ 3.3 million (including $ 0.8 million of trust customer intangibles) and $ 3.3 million (including $ 1.1 million of trust customer intangibles) at March 31, 2024 and 2023 , respectively. All other assets, including goodwill and the remainder of other intangible assets, were allocated to the Community Banking segment.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation — The accompanying unaudited interim financial statements of Wesbanco, Inc. and its consolidated subsidiaries (“Wesbanco”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2023. Wesbanco’s interim financial statements have been prepared following the significant accounting policies disclosed in Note 1 of the Notes to the Consolidated Financial Statements of its 2023 Annual Report on Form 10-K filed with the Securities and Exchange Commission, as well as with the policy changes indicated below. In the opinion of management, the accompanying interim financial information reflects all adjustments, including normal recurring adjustments, necessary to present fairly Wesbanco’s financial position and results of operations for each of the interim periods presented. Certain prior period amounts have been reclassified to conform to the current period presentation. Such reclassifications had no impact on Wesbanco’s net income and shareholders’ equity. Results of operations for interim periods are not necessarily indicative of the results of operations that may be expected for a full year.
Recent accounting pronouncements	Recent accounting pronouncements— The Financial Accounting Standards Board (“FASB”) issued Accounting Standards Updates (“ASU”) as noted below. ASU 2024-02 - Codification Improvements—Amendments to Remove References to the Concepts Statements In March 2024, the FASB issued ASU 2024-02, “Codification Improvements—Amendments to Remove References to the Concepts Statements.” The removal of all references to Concepts Statements in the guidance will simplify the Codification and draw a distinction between authoritative and nonauthoritative literature. For Wesbanco, the amendments in this Update are effective for fiscal years beginning after December 15, 2024. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2024-01 – Compensation – Stock Compensation (Topic 718) In March 2024, the FASB issued ASU 2024-01, “Stock Compensation (Topic 718).” The amendments in this Update are designed to improve GAAP by adding an illustrative example that includes four fact patterns to demonstrate how an entity should apply the scope guidance in paragraph 718-10-15-3 to determine whether a profits interest award should be accounted for in accordance with Topic 718. The illustrative example is intended to reduce (1) complexity in determining whether a profits interest award is subject to the guidance in Topic 718 and (2) existing diversity in practice. For Wesbanco, the amendments are effective for annual periods beginning after December 15, 2024, and interim periods within those annual periods. Early adoption is permitted for both interim and annual financial statements that have not yet been issued or made available for issuance. If an entity adopts the amendments in an interim period, it should adopt them as of the beginning of the annual period that includes that interim period. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2023-09 – Income Taxes (Topic 740): Improvements to Income Tax Disclosures In December 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740)." The amendments in this Update related to the rate reconciliation and income taxes paid disclosures and are designed to improve the transparency of income tax disclosures by requiring (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. For Wesbanco, the amendments are effective for annual periods beginning after December 15, 2024. Early adoption is permitted for annual financial statements that have not yet been issued or made available for issuance. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2023-08 – Intangibles-Goodwill and Other Crypto Assets (Subtopic 350-60): Accounting for and Disclosure of a Crypto Asset In December 2023, the FASB issued ASU 2023-08, "Intangibles-Goodwill and Other Crypto Assets (Subtopic 350-60)." The amendments in this Update require that an entity measure crypto assets at fair value in the statement of financial position each reporting period and recognize changes from remeasurement in net income. The amendments also require that an entity provide enhanced disclosures for both annual and interim reporting periods to provide investors with relevant information to analyze and assess the exposure and risk of significant individual crypto asset holdings. In addition, fair value measurement aligns the accounting required for holders of crypto assets with the accounting for entities that are subject to certain industry-specific guidance (such as investment companies) and eliminates the requirement to test those assets for impairment, thereby reducing the associated cost and complexity of applying the current guidance. For Wesbanco, the amendments are effective beginning after December 15, 2024, including interim periods within those fiscal years. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements, as Wesbanco holds no crypto assets. ASU 2023-07—Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures In November 2023, the FASB issued ASU 2023-07, “Improvements to Reportable Segment Disclosures (Topic 280).” The amendments in this Update improve financial reporting by requiring disclosure of incremental segment information on an annual and interim basis for all public entities to enable investors to develop more decision-useful financial analyses. The amendments in this Update do not change how a public entity identifies its operating segments, aggregates those operating segments, or applies the quantitative thresholds to determine its reportable segments. For Wesbanco, the amendments are effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2023-06 - Disclosure Improvements: Codification Amendments in Response to the SEC’s Disclosure Update and Simplification Initiative In October 2023, the FASB issued ASU 2023-06, "Disclosure Improvements." For entities subject to the SEC’s existing disclosure requirements and for entities required to file or furnish financial statements with or to the SEC in preparation for the sale of or for purposes of issuing securities that are not subject to contractual restrictions on transfer, the effective date for each amendment will be the date on which the SEC’s removal of that related disclosure from Regulation S-X or Regulation S-K becomes effective. If by June 30, 2027, the SEC has not removed the applicable requirement from Regulation S-X or Regulation S-K, the pending content of the related amendment will be removed from the Codification and will not become effective for any entity. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2023-05 – Business Combinations—Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement In August 2023, the FASB issued ASU 2023-05, "Business Combinations - Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement," under which an entity that qualifies as either a joint venture or a corporate joint venture as defined in the FASB Accounting Standards Codification ("ASC") master glossary is required to apply a new basis of accounting upon the formation of the joint venture. Specifically, the ASU provides that a joint venture or a corporate joint venture (collectively, “joint ventures”) must initially measure its assets and liabilities at fair value on the formation date. For Wesbanco, the amendments are effective for all joint ventures within the ASU’s scope that are formed on or after January 1, 2025 . Early adoption is permitted in any annual or interim period as of the beginning of the related fiscal year. The adoption of this pronouncement is no t expected to have a material impact on the Consolidated Financial Statements. ASU 2023-02 – Investments Equity Method and Joint Ventures (Topic 323) In March 2023, the FASB issued ASU 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. ASU 2023-02 allows reporting entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. The ASU’s amendments “remove the specialized guidance for [low-income-housing tax credit] investments that are not accounted for using the proportional amortization method and instead require that those LIHTC investments be accounted for using the guidance in other [GAAP].” For Wesbanco, the amendments were effective on January 1, 2024 . The adoption of this pronouncement did no t have a material impact on the Consolidated Financial Statements. ASU 2023-01 - Leases (Topic 842): Common Control Arrangements In March 2023, the FASB issued ASU 2023-01, Leases (Topic 842): Common Control Arrangements. ASU 2023-01 amends certain provisions of ASC 842 that apply to arrangements between related parties under common control. Additionally, ASU 2023-01 amends the accounting for leasehold improvements in common-control arrangements for all entities. For Wesbanco, the amendments were effective on January 1, 2024 . The adoption of this pronouncement did no t have a material impact on the Consolidated Financial Statements. ASU 2022-04 - Liabilities – Supplier Finance Programs (Sub-topic 405-50) In September 2022, the FASB issued ASU 2022-04, “Liabilities—Supplier Finance Programs (Subtopic 405-50).” The amendments in this ASU require that a buyer in a supplier finance program disclose sufficient information about the program to allow a user of financial statements to understand the program’s nature, activity during the period, changes from period to period, and potential magnitude. To achieve that objective, the buyer should disclose qualitative and quantitative information about its supplier finance programs. For Wesbanco, this update was effective beginning on January 1, 2023, except for the amendment on rollforward information, which was effective on January 1, 2024 . The adoption of this full pronouncement did no t have a material impact on the Consolidated Financial Statements. ASU 2022-03 - Fair Value Measurement (Topic 820) In June 2022, the FASB issued ASU 2022-03, "Fair Value Measurement (Topic 820).” The amendments in this ASU clarify that a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security, and therefore, is not considered in measuring fair value. Furthermore, the amendments to this ASU clarify that an entity cannot, as a separate unit of account, recognize and measure a contractual sale restriction. The update to this ASU requires the following disclosures for equity securities: (1) the fair value of equity securities subject to contractual sale restrictions reflected in the balance sheet; (2) the nature and remaining duration of the restriction(s) and; (3) the circumstances that could cause a lapse in the restriction(s). The amendments in this Update were effective on January 1, 2024 . The adoption of this pronouncement did no t have a material impact on the Consolidated Financial Statements.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Summary of Earnings Per Common Share	Earnings per common share are calculated as follows: For the Three Months (unaudited, in thousands, except shares and per share amounts) 2024 2023 Numerator for both basic and diluted earnings per common share: Net income available to common shareholders $ 33,162 $ 39,810 Denominator: Total average basic common shares outstanding 59,382,758 59,217,711 Effect of dilutive stock options and other stock compensation 140,921 157,342 Total diluted average common shares outstanding 59,523,679 59,375,053 Earnings per common share - basic $ 0.56 $ 0.67 Earnings per common share - diluted $ 0.56 $ 0.67

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Schedule of Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Securities	The following table presents the fair value and amortized cost of available-for-sale and held-to-maturity debt securities: March 31, 2024 December 31, 2023 (unaudited, in thousands) Amortized Gross Gross Fair Amortized Gross Gross Fair Available-for-sale debt securities U.S. Government sponsored entities and agencies $ 234,707 $ — $ ( 32,998 ) $ 201,709 $ 238,676 $ — $ ( 30,310 ) $ 208,366 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 1,849,231 46 ( 276,658 ) 1,572,619 1,897,511 47 ( 267,874 ) 1,629,684 Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 265,195 38 ( 5,386 ) 259,847 274,220 11 ( 5,924 ) 268,307 Obligations of states and political subdivisions 76,635 36 ( 3,384 ) 73,287 78,819 167 ( 2,861 ) 76,125 Corporate debt securities 11,965 — ( 155 ) 11,810 11,962 — ( 115 ) 11,847 Total available-for-sale debt securities $ 2,437,733 $ 120 $ ( 318,581 ) $ 2,119,272 $ 2,501,188 $ 225 $ ( 307,084 ) $ 2,194,329 Held-to-maturity debt securities U.S. Government sponsored entities and agencies $ 3,533 $ — $ ( 342 ) $ 3,191 $ 3,587 $ — $ ( 313 ) $ 3,274 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 37,408 — ( 3,222 ) 34,186 38,893 — ( 3,017 ) 35,876 Obligations of states and political subdivisions 1,128,828 356 ( 133,972 ) 995,212 1,136,779 852 ( 127,518 ) 1,010,113 Corporate debt securities 20,241 — ( 386 ) 19,855 20,268 — ( 372 ) 19,896 Total held-to-maturity debt securities (1) $ 1,190,010 $ 356 $ ( 137,922 ) $ 1,052,444 $ 1,199,527 $ 852 $ ( 131,220 ) $ 1,069,159 Total debt securities $ 3,627,743 $ 476 $ ( 456,503 ) $ 3,171,716 $ 3,700,715 $ 1,077 $ ( 438,304 ) $ 3,263,488 (1) Total held-to-maturity debt securities are presented on the balance sheet net of their allowance for credit losses totaling $ 0.2 million at March 31, 2024 and December 31, 2023 , respectively.
Schedule of Amortized Cost and Fair Value of Available-for-Sale and Held-to-Maturity Securities by Contractual Maturity	The following table presents the amortized cost and fair value of available-for-sale and held-to-maturity debt securities by contractual maturity date at March 31, 2024. Actual maturities will differ from contractual maturities because borrowers may have the right to call or prepay debt obligations with or without prepayment penalties. Mortgage-backed securities and collateralized mortgage obligations are classified in the table below based on their contractual maturity date; however, regular principal payments and prepayments of principal are received on a monthly basis. (unaudited, in thousands) Amortized Cost Fair Value Available-for-sale debt securities Within one year $ 25,261 $ 24,946 After 1 year through 5 years 159,144 154,948 After 5 years through 10 years 307,040 290,268 After 10 years 1,946,288 1,649,110 Total available-for-sale debt securities $ 2,437,733 $ 2,119,272 Held-to-maturity debt securities Within one year $ 24,865 $ 24,695 After 1 year through 5 years 111,641 109,756 After 5 years through 10 years 489,993 451,150 After 10 years 563,511 466,843 Total held-to-maturity debt securities $ 1,190,010 $ 1,052,444 Total debt securities $ 3,627,743 $ 3,171,716
Schedule of Gross Realized Gains and Losses on the Sales and Calls of Securities	The following table presents the gross realized gains and losses on sales and calls of available-for-sale and held-to-maturity debt securities, as well as gains and losses on equity securities from both sales and market adjustments, for the three months ended March 31, 2024 and 2023, respectively. All gains and losses presented in the table below are included in the net securities gains (losses) line item of the consolidated income statement. For those equity securities relating to the key officer and director deferred compensation plan, the corresponding change in the obligation to the participant is recognized in employee benefits expense. For the Three Months (unaudited, in thousands) 2024 2023 Debt securities: Gross realized gains $ — $ 64 Gross realized losses — ( 197 ) Net losses on debt securities — ( 133 ) Equity securities: Net unrealized gains recognized on securities still held 537 278 Net securities gains $ 537 $ 145
Schedule of Allowance for Credit Losses on Held-to-maturity Securities	The following table provides a roll-forward of the allowance for credit losses on held-to-maturity securities for the three months ended March 31, 2024 and 2023: Allowance for Credit Losses By Category For the Three Months Ended March 31, 2024 and 2023 Residential mortgage -backed securities and collateralized mortgage obligations Obligations of U.S. Government of government states and Corporate sponsored sponsored entities political debt (unaudited, in thousands) entities and agencies and agencies subdivisions Securities Total Balance at December 31, 2023 $ — $ — $ 160 $ 32 $ 192 Current period provision (1) — — — ( 9 ) ( 9 ) Write-offs — — — — — Recoveries — — — — — Balance at March 31, 2024 $ — $ — $ 160 $ 23 $ 183 . Balance at December 31, 2022 $ — $ — $ 167 $ 53 $ 220 Current period provision (1) — — ( 6 ) ( 2 ) ( 8 ) Write-offs — — — — — Recoveries — — — — — Balance at March 31, 2023 $ — $ — $ 161 $ 51 $ 212 (1) The total provision for credit losses on held-to-maturity securities is reported in the consolidated statements of income in the provision for credit losses line item, which also includes the provision for credit losses - loans and loan commitments. For more information on the provision relating to loans and loan commitments, please see Note 4, "Loans and the Allowance for Credit Losses."
Schedule of Unrealized Losses on Investment Securities	The following tables provide information on unrealized losses on available-for-sale debt securities that have been in an unrealized loss position for less than twelve months and twelve months or more, for which an allowance for credit losses has not been recorded, as of March 31, 2024 and December 31, 2023, respectively: March 31, 2024 Less than 12 months 12 months or more Total (unaudited, dollars in thousands) Fair Unrealized # of Fair Unrealized # of Fair Unrealized # of U.S. Government sponsored entities and agencies $ — $ — — $ 201,709 $ ( 32,998 ) 45 $ 201,709 $ ( 32,998 ) 45 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies — — — 1,568,530 ( 276,658 ) 466 1,568,530 ( 276,658 ) 466 Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies — — — 243,531 ( 5,386 ) 60 243,531 ( 5,386 ) 60 Obligations of states and political subdivisions 8,811 ( 61 ) 10 58,392 ( 3,323 ) 97 67,203 ( 3,384 ) 107 Corporate debt securities 6,478 ( 22 ) 4 4,831 ( 133 ) 1 11,309 ( 155 ) 5 Total $ 15,289 $ ( 83 ) 14 $ 2,076,993 $ ( 318,498 ) 669 $ 2,092,282 $ ( 318,581 ) 683 December 31, 2023 Less than 12 months 12 months or more Total (dollars in thousands) Fair Unrealized # of Fair Unrealized # of Fair Unrealized # of U.S. Government sponsored entities and agencies $ 18 $ ( 1 ) 1 $ 208,348 $ ( 30,309 ) 45 $ 208,366 $ ( 30,310 ) 46 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies — — — 1,625,144 ( 267,874 ) 467 1,625,144 ( 267,874 ) 467 Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 5,520 ( 31 ) 1 251,765 ( 5,893 ) 60 257,285 ( 5,924 ) 61 Obligations of states and political subdivisions 10,387 ( 86 ) 19 49,002 ( 2,775 ) 79 59,389 ( 2,861 ) 98 Corporate debt securities 4,482 ( 18 ) 3 7,365 ( 97 ) 3 11,847 ( 115 ) 6 Total $ 20,407 $ ( 136 ) 24 $ 2,141,624 $ ( 306,948 ) 654 $ 2,162,031 $ ( 307,084 ) 678

Loans and the Allowance for C_2

Loans and the Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]
Schedule of Recorded Investment in Loans by Category	The recorded investment in loans is presented in the Consolidated Balance Sheets net of deferred loan fees and costs, and discounts on purchased loans. Net deferred loan costs were $ 11.8 million and $ 11.5 million at March 31, 2024 and December 31, 2023 , respectively. The unaccreted discount on purchased loans from acquisitions was $ 12.7 million at March 31, 2024 and $ 13.5 million at December 31, 2023. March 31, December 31, (unaudited, in thousands) 2024 2023 Commercial real estate: Land and construction $ 1,087,649 $ 1,055,865 Improved property 5,667,284 5,509,583 Total commercial real estate 6,754,933 6,565,448 Commercial and industrial 1,683,172 1,670,659 Residential real estate 2,469,357 2,438,574 Home equity 740,973 734,219 Consumer 224,732 229,561 Total portfolio loans 11,873,167 11,638,461 Loans held for sale 12,472 16,354 Total loans $ 11,885,639 $ 11,654,815
Summary of Changes in Allowance for Credit Losses	The following tables summarize changes in the allowance for credit losses applicable to each category of the loan portfolio: Allowance for Credit Losses By Category For the Three Months Ended March 31, 2024 and 2023 (unaudited, in thousands) Commercial Commercial Commercial Residential Home Consumer Deposit Total Balance at December 31, 2023 Allowance for credit $ 7,123 $ 59,351 $ 36,644 $ 21,218 $ 1,017 $ 3,956 $ 1,366 $ 130,675 Allowance for credit 6,894 — 429 1,276 5 — — 8,604 Total beginning allowance for credit 14,017 59,351 37,073 22,494 1,022 3,956 1,366 139,279 Provision for credit losses: Provision for loan losses 858 ( 3,621 ) 5,806 650 25 538 194 4,450 Provision for loan commitments ( 568 ) — 124 9 6 — — ( 429 ) Total provision for credit 290 ( 3,621 ) 5,930 659 31 538 194 4,021 Charge-offs ( 813 ) ( 58 ) ( 4,810 ) ( 135 ) ( 216 ) ( 1,098 ) ( 453 ) ( 7,583 ) Recoveries — 432 401 34 198 455 128 1,648 Net (charge-offs) recoveries ( 813 ) 374 ( 4,409 ) ( 101 ) ( 18 ) ( 643 ) ( 325 ) ( 5,935 ) Balance at March 31, 2024 Allowance for credit 7,168 56,104 38,041 21,767 1,024 3,851 1,235 129,190 Allowance for credit 6,326 — 553 1,285 11 — — 8,175 Total ending allowance for credit $ 13,494 $ 56,104 $ 38,594 $ 23,052 $ 1,035 $ 3,851 $ 1,235 $ 137,365 Balance at December 31, 2022 Allowance for credit $ 6,737 $ 52,659 $ 31,540 $ 18,208 $ 4,234 $ 3,127 $ 1,285 $ 117,790 Allowance for credit 6,025 — — 2,215 128 — — 8,368 Total beginning allowance for credit 12,762 52,659 31,540 20,423 4,362 3,127 1,285 126,158 Provision for credit losses: Provision for loan losses ( 1,440 ) 2,508 ( 2,783 ) 4,407 141 97 ( 103 ) 2,827 Provision for loan commitments ( 51 ) — 797 ( 10 ) 23 — — 759 Total provision for credit ( 1,491 ) 2,508 ( 1,986 ) 4,397 164 97 ( 103 ) 3,586 Charge-offs ( 222 ) ( 1,355 ) ( 320 ) 13 ( 258 ) ( 776 ) ( 401 ) ( 3,319 ) Recoveries 73 276 134 75 80 622 140 1,400 Net (charge-offs) recoveries ( 149 ) ( 1,079 ) ( 186 ) 88 ( 178 ) ( 154 ) ( 261 ) ( 1,919 ) Balance at March 31, 2023 Allowance for credit 5,148 54,088 28,571 22,703 4,197 3,070 921 118,698 Allowance for credit 5,974 — 797 2,205 151 — — 9,127 Total ending allowance for credit $ 11,122 $ 54,088 $ 29,368 $ 24,908 $ 4,348 $ 3,070 $ 921 $ 127,825 (1) Deposit overdrafts of $ 4.1 million and $ 3.6 million are included in total portfolio loans for the periods ending March 31, 2024 and March 31, 2023, respectively. (2) The total provision for credit losses - loans and loan commitments is reported in the consolidated statements of income in the provision for credit losses line item, which also includes the provision for credit losses on held-to-maturity securities. For more information on the provision relating to held-to-maturity securities, please see Note 3, "Securities."
Allowance for Credit Losses and Recorded Investments in Loans	The following tables present the allowance for credit losses and recorded investments in loans by category, as of each period-end: Allowance for Credit Losses and Recorded Investment in Loans (unaudited, in thousands) Commercial Commercial Commercial Residential Home Consumer Deposit Total March 31, 2024 Allowance for credit losses: Loans individually-evaluated $ — $ 5,591 $ — $ — $ — $ — $ — $ 5,591 Loans collectively-evaluated 7,168 50,513 38,041 21,767 1,024 3,851 1,235 123,599 Loan commitments (2) 6,326 — 553 1,285 11 — — 8,175 Total allowance for credit $ 13,494 $ 56,104 $ 38,594 $ 23,052 $ 1,035 $ 3,851 $ 1,235 $ 137,365 Portfolio loans: Individually-evaluated for credit $ — $ 36,701 $ 45 $ — $ — $ — $ — $ 36,746 Collectively-evaluated for credit 1,087,649 5,630,583 1,683,127 2,469,357 740,973 224,732 — 11,836,421 Total portfolio loans $ 1,087,649 $ 5,667,284 $ 1,683,172 $ 2,469,357 $ 740,973 $ 224,732 $ — $ 11,873,167 December 31, 2023 Allowance for credit losses: Loans individually-evaluated $ — $ 5,745 $ — $ — $ — $ — $ — $ 5,745 Loans collectively-evaluated 7,123 53,606 36,644 21,218 1,017 3,956 1,366 124,930 Loan commitments (2) 6,894 — 429 1,276 5 — — 8,604 Total allowance for credit $ 14,017 $ 59,351 $ 37,073 $ 22,494 $ 1,022 $ 3,956 $ 1,366 $ 139,279 Portfolio loans: Individually-evaluated for credit $ — $ 36,929 $ 116 $ — $ — $ — $ — $ 37,045 Collectively-evaluated for credit 1,055,865 5,472,654 1,670,543 2,438,574 734,219 229,561 — 11,601,416 Total portfolio loans $ 1,055,865 $ 5,509,583 $ 1,670,659 $ 2,438,574 $ 734,219 $ 229,561 $ — $ 11,638,461 (1) Deposit overdrafts of $ 4.1 million and $ 4.7 million are included in total portfolio loans for the periods ending March 31, 2024 and December 31, 2023, respectively. (2) For additional detail relating to loan commitments, see Note 11, "Commitments and Contingent Liabilities."
Summary of Commercial Loans by Risk Grade	The following tables summarize commercial loans by their assigned risk grade: Commercial Loans by Internally Assigned Risk Grade (unaudited, in thousands) Commercial Commercial Commercial Total As of March 31, 2024 Pass $ 1,084,975 $ 5,491,663 $ 1,588,033 $ 8,164,671 Criticized - compromised 2,457 103,648 65,431 171,536 Classified - substandard 217 71,973 29,708 101,898 Classified - doubtful — — — — Total $ 1,087,649 $ 5,667,284 $ 1,683,172 $ 8,438,105 As of December 31, 2023 Pass $ 1,053,359 $ 5,337,394 $ 1,586,683 $ 7,977,436 Criticized - compromised 2,497 107,473 73,204 183,174 Classified - substandard 9 64,716 10,772 75,497 Classified - doubtful — — — — Total $ 1,055,865 $ 5,509,583 $ 1,670,659 $ 8,236,107
Summary of Age Analysis of Loan Categories	The following tables summarize the age analysis of all categories of loans: Age Analysis of Loans (unaudited, in thousands) Current 30-59 60-89 90 Days Total Total 90 Days Due and As of March 31, 2024 Commercial real estate: Land and construction $ 1,087,649 $ — $ — $ — $ — $ 1,087,649 $ — Improved property 5,651,347 2,852 1,226 11,859 15,937 5,667,284 408 Total commercial real estate 6,738,996 2,852 1,226 11,859 15,937 6,754,933 408 Commercial and industrial 1,679,157 1,440 633 1,942 4,015 1,683,172 135 Residential real estate 2,458,403 3,160 478 7,316 10,954 2,469,357 3,151 Home equity 730,521 4,869 2,249 3,334 10,452 740,973 1,223 Consumer 220,302 2,905 1,019 506 4,430 224,732 491 Total portfolio loans 11,827,379 15,226 5,605 24,957 45,788 11,873,167 5,408 Loans held for sale 12,472 — — — — 12,472 — Total loans $ 11,839,851 $ 15,226 $ 5,605 $ 24,957 $ 45,788 $ 11,885,639 $ 5,408 Nonperforming loans included above are as follows: Non-accrual loans $ 11,054 $ 1,612 $ 704 $ 19,549 $ 21,865 $ 32,919 As of December 31, 2023 Commercial real estate: Land and construction $ 1,055,865 $ — $ — $ — $ - $ 1,055,865 $ — Improved property 5,490,946 4,416 3,627 10,594 18,637 5,509,583 1,899 Total commercial real estate 6,546,811 4,416 3,627 10,594 18,637 6,565,448 1,899 Commercial and industrial 1,663,985 640 1,255 4,779 6,674 1,670,659 3,184 Residential real estate 2,429,200 1,572 2,471 5,331 9,374 2,438,574 2,602 Home equity 724,293 4,691 1,198 4,037 9,926 734,219 1,407 Consumer 223,989 3,833 1,178 561 5,572 229,561 546 Total portfolio loans 11,588,278 15,152 9,729 25,302 50,183 11,638,461 9,638 Loans held for sale 16,354 — — — — 16,354 — Total loans $ 11,604,632 $ 15,152 $ 9,729 $ 25,302 $ 50,183 $ 11,654,815 $ 9,638 Nonperforming loans included above are as follows: Non-accrual loans $ 9,138 $ 1,300 $ 706 $ 15,664 $ 17,670 $ 26,808
Summary of Nonperforming Loans	The following tables summarize nonperforming loans: Nonperforming Loans March 31, 2024 December 31, 2023 Unpaid Unpaid Principal Recorded Related Principal Recorded Related (unaudited, in thousands) Balance (1) Investment Allowance Balance (1) Investment Allowance With no related specific allowance recorded: Commercial real estate: Land and construction $ 1,023 $ 210 $ — $ — $ — $ — Improved property 14,871 13,523 — 11,248 9,557 — Commercial and industrial 3,660 2,765 — 2,492 1,841 — Residential real estate 16,367 11,679 — 15,128 10,582 — Home equity 6,420 4,669 — 6,521 4,777 — Consumer 119 73 — 104 51 — Total nonperforming loans without a specific allowance 42,460 32,919 — 35,493 26,808 — Total nonperforming loans with a specific allowance — — — — — — Total nonperforming loans $ 42,460 $ 32,919 $ — $ 35,493 $ 26,808 $ — (1) The difference between the unpaid principal balance and the recorded investment generally reflects amounts that have been previously charged-off and fair market value adjustments on acquired nonperforming loans. Nonperforming Loans For the Three Months Ended March 31, 2024 March 31, 2023 Average Interest Average Interest Recorded Income Recorded Income (unaudited, in thousands) Investment Recognized Investment Recognized With no related specific allowance recorded: Commercial real estate: Land and construction $ 105 $ — $ 56 $ — Improved property 11,540 — 17,401 — Commercial and industrial 2,303 — 3,161 — Residential real estate 11,131 — 14,447 — Home equity 4,723 — 5,118 — Consumer 62 — 134 — Total nonperforming loans without a specific allowance 29,864 — 40,317 — With a specific allowance recorded: Commercial real estate: Land and construction — — — — Improved property — — — — Total nonperforming loans with a specific allowance — — — — Total nonperforming loans $ 29,864 $ — $ 40,317 $ —
Recorded Investment in Non-Accrual Loans	The following table presents the recorded investment in non-accrual loans: Non-accrual Loans (1) March 31, December 31, (unaudited, in thousands) 2024 2023 Commercial real estate: Land and construction $ 210 $ — Improved property 13,523 9,557 Total commercial real estate 13,733 9,557 Commercial and industrial 2,765 1,841 Residential real estate 11,679 10,582 Home equity 4,669 4,777 Consumer 73 51 Total $ 32,919 $ 26,808 (1) At March 31, 2024 , there were four borrowers with a loan balance greater than $ 1.0 million, which totaled $ 10.9 million, as compared to two borrowers with a loan balance greater than $ 1.0 million totaling $ 7.2 million at December 31, 2023 . Total non-accrual loans may include loans that are also restructured for borrowers experiencing financial difficulty. Such loans are also set forth in the following tables.
Summary of Details of Portfolio Loans Modified by Loan Category	The following table displays the details of portfolio loans that were modified during the three months ended March 31, 2024 and 2023 presented by loan category: For the Three Months Ended March 31, 2024 (unaudited, in thousands) Term Payment Total % of Commercial real estate - land and construction $ — $ — $ — - Commercial real estate - improved property 24,989 — 24,989 0.4 Commercial and industrial — 41 41 0.0 Residential real estate — 579 579 0.0 Home equity — 350 350 0.0 Consumer — 124 124 0.1 Total $ 24,989 $ 1,094 $ 26,083 0.2 For the Three Months Ended March 31, 2023 (unaudited, in thousands) Term Payment Total Percent of Commercial real estate - land and construction $ 6,000 $ — $ 6,000 0.8 Commercial real estate - improved property 3,738 — 3,738 0.1 Commercial and industrial 6,843 — 6,843 0.5 Residential real estate — 101 101 0.0 Home equity 8 283 291 0.0 Consumer — 34 34 0.0 Total $ 16,589 $ 418 $ 17,007 0.2 Unfunded loan commitments on modifications for borrowers experiencing financial difficulty ("MBEFDs") totaled $ 0.7 million for loans modified during the three months ended March 31, 2024 and $ 1.8 million for loans modified during the twelve months ended December 31, 2023 . These commitments are not included in the tables above.
Summary of Financial Impacts of Loan Modifications and Payment Deferrals to Portfolio Loans	The following table summarizes the financial impacts of loan modifications and payment deferrals made to portfolio loans during the three months ended March 31, 2024 and 2023, presented by loan category: For the Three Months Ended March 31, 2024 For the Three Months Ended March 31, 2023 (unaudited, in thousands) Weighted-Average Weighted-Average Commercial real estate - land and construction — 3 Commercial real estate - improved property 9 34 Commercial and industrial — 4 Residential real estate — — Home equity — 120 Consumer — —
Summary of Aging Analysis of Portfolio Loans Restructured	The following table presents an aging analysis of portfolio loans by loan category that were modified during the twelve months prior to March 31, 2024. March 31, 2024 (unaudited, in thousands) 30-59 Days 60-89 Days 90 Days Total Current Total Commercial real estate - land and construction $ — $ — $ — $ — $ — $ — Commercial real estate - improved property — — — — 29,041 29,041 Commercial and industrial — — 41 41 8,531 8,572 Residential real estate 37 68 170 275 1,200 1,475 Home equity 14 — 233 247 1,016 1,263 Consumer 39 33 9 81 380 461 Total modified loans (1) $ 90 $ 101 $ 453 $ 644 $ 40,168 $ 40,812 (1) Represents balance at period end.
Summary of Amortized Cost Basis Loan Balances by Year of Origination and Credit Quality Indicator	The following tables summarize amortized cost basis loan balances by year of origination and credit quality indicator: Loans As of March 31, 2024 Amortized Cost Basis by Origination Year (unaudited, in thousands) 2024 2023 2022 2021 2020 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: land and construction Risk rating: Pass $ 24,606 $ 331,376 $ 379,849 $ 152,158 $ 24,478 $ 60,384 $ 62,496 $ 49,628 $ 1,084,975 Criticized - compromised — — — — — 14 280 2,163 2,457 Classified - substandard — 210 — — — 7 — — 217 Classified - doubtful — — — — — — — — — Total $ 24,606 $ 331,586 $ 379,849 $ 152,158 $ 24,478 $ 60,405 $ 62,776 $ 51,791 $ 1,087,649 Current-period gross charge-offs $ — $ 813 $ — $ — $ — $ — $ — $ — $ 813 Commercial real estate: improved property Risk rating: Pass $ 107,508 $ 500,262 $ 1,090,763 $ 576,509 $ 618,834 $ 2,165,451 $ 115,578 $ 316,758 $ 5,491,663 Criticized - compromised — 12,928 11,434 8,319 4,380 39,434 1,697 25,456 103,648 Classified - substandard — 1,906 5,493 776 2,326 61,438 — 34 71,973 Classified - doubtful — — — — — — — — — Total $ 107,508 $ 515,096 $ 1,107,690 $ 585,604 $ 625,540 $ 2,266,323 $ 117,275 $ 342,248 $ 5,667,284 Current-period gross charge-offs $ — $ — $ — $ — $ — $ 58 $ — $ — $ 58 Commercial and industrial Risk rating: Pass $ 60,297 $ 217,013 $ 226,435 $ 135,148 $ 68,852 $ 275,734 $ 546,174 $ 58,380 $ 1,588,033 Criticized - compromised — 1,276 1,174 254 1,387 38,277 15,626 7,437 65,431 Classified - substandard — 405 875 741 239 2,343 24,145 960 29,708 Classified - doubtful — — — — — — — — — Total $ 60,297 $ 218,694 $ 228,484 $ 136,143 $ 70,478 $ 316,354 $ 585,945 $ 66,777 $ 1,683,172 Current-period gross charge-offs $ — $ 274 $ 126 $ — $ 53 $ 325 $ — $ 4,032 $ 4,810 Residential real estate Loan delinquency: Current $ 34,392 $ 278,392 $ 393,426 $ 435,283 $ 182,098 $ 527,391 $ — $ 607,421 $ 2,458,403 30-59 days past due — — — — 339 2,728 — 93 3,160 60-89 days past due — — — — — 478 — — 478 90 days or more past due — — 791 34 168 5,087 — 1,236 7,316 Total $ 34,392 $ 278,392 $ 394,217 $ 435,317 $ 182,605 $ 535,684 $ — $ 608,750 $ 2,469,357 Current-period gross charge-offs $ — $ — $ — $ — $ — $ 77 $ — $ 58 $ 135 Home equity Loan delinquency: Current $ 11,894 $ 993 $ 1,676 $ 1,059 $ 1,840 $ 21,352 $ 689,877 $ 1,830 $ 730,521 30-59 days past due — 59 251 80 57 841 3,425 156 4,869 60-89 days past due — 700 217 — 14 1,308 3 7 2,249 90 days or more past due — — 222 177 657 1,954 — 324 3,334 Total $ 11,894 $ 1,752 $ 2,366 $ 1,316 $ 2,568 $ 25,455 $ 693,305 $ 2,317 $ 740,973 Current-period gross charge-offs $ — $ 20 $ 62 $ — $ 35 $ 72 $ 20 $ 7 $ 216 Consumer Loan delinquency: Current $ 19,019 $ 76,043 $ 52,536 $ 19,109 $ 10,962 $ 18,694 $ 23,939 $ — $ 220,302 30-59 days past due 86 709 950 779 183 193 5 — 2,905 60-89 days past due — 281 519 64 73 82 — — 1,019 90 days or more past due — 156 109 64 70 107 — — 506 Total $ 19,105 $ 77,189 $ 54,114 $ 20,016 $ 11,288 $ 19,076 $ 23,944 $ — $ 224,732 Current-period gross charge-offs $ — $ 189 $ 587 $ 213 $ 52 $ 57 $ — $ — $ 1,098 Loans As of December 31, 2023 Amortized Cost Basis by Origination Year (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: land and construction Risk rating: Pass $ 290,954 $ 349,549 $ 145,043 $ 54,172 $ 48,655 $ 35,917 $ 82,288 $ 46,781 $ 1,053,359 Criticized - compromised — — — — — 16 299 2,182 2,497 Classified - substandard — — — — — 9 — — 9 Classified - doubtful — — — — — — — — — Total $ 290,954 $ 349,549 $ 145,043 $ 54,172 $ 48,655 $ 35,942 $ 82,587 $ 48,963 $ 1,055,865 Current-period gross charge-offs $ — $ — $ — $ — $ — $ — $ — $ 222 $ 222 Commercial real estate: improved property Risk rating: Pass $ 494,142 $ 1,076,535 $ 603,354 $ 581,540 $ 514,523 $ 1,706,804 $ 103,467 $ 257,029 $ 5,337,394 Criticized - compromised — 16,270 8,630 4,387 5,185 44,861 2,373 25,767 107,473 Classified - substandard 1,921 517 417 2,416 23,472 35,939 — 34 64,716 Classified - doubtful — — — — — — — — — Total $ 496,063 $ 1,093,322 $ 612,401 $ 588,343 $ 543,180 $ 1,787,604 $ 105,840 $ 282,830 $ 5,509,583 Current-period gross charge-offs $ — $ — $ 372 $ — $ — $ 1,505 $ — $ — $ 1,877 Commercial and industrial Risk rating: Pass $ 238,427 $ 234,520 $ 136,998 $ 78,836 $ 39,259 $ 252,826 $ 541,400 $ 64,417 $ 1,586,683 Criticized - compromised 1,094 834 3,169 1,490 7,334 31,526 20,626 7,131 73,204 Classified - substandard 33 149 315 265 825 1,916 5,797 1,472 10,772 Classified - doubtful — — — — — — — — — Total $ 239,554 $ 235,503 $ 140,482 $ 80,591 $ 47,418 $ 286,268 $ 567,823 $ 73,020 $ 1,670,659 Current-period gross charge-offs $ 98 $ 205 $ 603 $ 353 $ 20 $ 463 $ — $ 541 $ 2,283 Residential real estate Loan delinquency: Current $ 277,790 $ 429,835 $ 445,322 $ 185,139 $ 86,149 $ 456,818 $ — $ 548,147 $ 2,429,200 30-59 days past due — — — — — 1,572 — — 1,572 60-89 days past due — — — 341 — 2,130 — — 2,471 90 days or more past due — 799 34 — 263 4,207 — 28 5,331 Total $ 277,790 $ 430,634 $ 445,356 $ 185,480 $ 86,412 $ 464,727 $ — $ 548,175 $ 2,438,574 Current-period gross charge-offs $ — $ — $ — $ — $ 5 $ 387 $ — $ — $ 392 Home equity Loan delinquency: Current $ 12,675 $ 1,235 $ 1,467 $ 1,571 $ 1,614 $ 22,484 $ 681,848 $ 1,399 $ 724,293 30-59 days past due 34 193 85 73 44 947 3,315 — 4,691 60-89 days past due 119 318 16 68 76 524 — 77 1,198 90 days or more past due — 213 — 737 230 2,527 — 330 4,037 Total $ 12,828 $ 1,959 $ 1,568 $ 2,449 $ 1,964 $ 26,482 $ 685,163 $ 1,806 $ 734,219 Current-period gross charge-offs $ — $ 139 $ 57 $ 29 $ 79 $ 615 $ 6 $ — $ 925 Consumer Loan delinquency: Current $ 84,526 $ 57,661 $ 21,592 $ 13,189 $ 10,958 $ 12,143 $ 23,916 $ 4 $ 223,989 30-59 days past due 699 1,526 952 343 162 119 32 — 3,833 60-89 days past due 191 616 195 112 5 59 — — 1,178 90 days or more past due 64 203 114 63 9 108 — — 561 Total $ 85,480 $ 60,006 $ 22,853 $ 13,707 $ 11,134 $ 12,429 $ 23,948 $ 4 $ 229,561 Current-period gross charge-offs $ 251 $ 1,921 $ 901 $ 301 $ 100 $ 247 $ 4 $ — $ 3,725
Summary of Other Real Estate Owned and Repossessed Assets	The following table summarizes other real estate owned and repossessed assets included in other assets: March 31, December 31, (unaudited, in thousands) 2024 2023 Other real estate owned $ 1,210 $ 1,207 Repossessed assets 264 290 Total other real estate owned and repossessed assets $ 1,474 $ 1,497

Investments In Limited Partne_2

Investments In Limited Partnerships (Tables)	3 Months Ended
	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Equity Commitments	The following table presents the scheduled equity commitments to be paid to the limited partnerships over the next five years and in the aggregate thereafter as of March 31, 2024: Year Amount 2024 $ 5,190 2025 2,944 2026 834 2027 819 2028 492 2029 and thereafter 1,141 Total $ 11,420

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Fair Values of Derivative Instruments on Balance Sheets	The table below presents the fair value of Wesbanco’s derivative financial instruments as well as their classification on the Balance Sheet as of March 31, 2024 and December 31, 2023: March 31, 2024 December 31, 2023 (unaudited, in thousands) Notional or Asset Liability Notional or Asset Liability Derivatives Loan Swaps: Interest rate swaps and caps $ 1,611,918 $ 78,211 $ 78,312 $ 1,573,152 $ 72,183 $ 73,083 Other contracts: Interest rate lock commitments 23,009 58 — 16,524 84 — Forward TBA contracts 26,500 — 3 27,000 — 205 Total derivatives $ 78,269 $ 78,315 $ 72,267 $ 73,288
Summary of Effect of Derivative Instruments on Income Statement	The table below presents the change in the fair value of the Company’s derivative financial instruments reflected within non-interest income on the consolidated income statement for the three months ended March 31, 2024 and 2023, respectively. For the Three Months (unaudited, in thousands) Location of Gain/(Loss) 2024 2023 Interest rate swaps and caps Net swap fee and valuation income $ 798 $ ( 1,039 ) Interest rate lock commitments Mortgage banking income ( 26 ) 187 Forward TBA contracts Mortgage banking income 48 ( 189 ) Total $ 820 $ ( 1,041 )

Benefit Plans (Tables)

Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2024
Retirement Benefits [Abstract]
Schedule of Defined Benefit Pension Plan	The following table presents the net periodic pension income for Wesbanco’s Defined Benefit Pension Plan (the “Plan”) and the related components: For the Three Months (unaudited, in thousands) 2024 2023 Service cost – benefits earned during year $ 330 $ 350 Interest cost on projected benefit obligation 1,603 1,554 Expected return on plan assets ( 2,599 ) ( 2,750 ) Amortization of prior service cost ( 9 ) ( 9 ) Amortization of net loss 21 223 Net periodic pension income $ ( 654 ) $ ( 632 )

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Assets and Liabilities Measured on Recurring and Nonrecurring Basis	The fair value amounts presented in the table below are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statement of financial position. The following tables set forth Wesbanco’s financial assets and liabilities that were accounted for at fair value on a recurring and nonrecurring basis by level within the fair value hierarchy as of March 31, 2024 and December 31, 2023: March 31, 2024 Fair Value Measurements Using: March 31, Quoted Prices in Significant Significant (unaudited, in thousands) 2024 (level 1) (level 2) (level 3) Recurring fair value measurements Equity securities $ 13,074 $ 13,074 $ — $ — Available-for-sale debt securities U.S. Government sponsored entities and agencies 201,709 — 201,709 — Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 1,572,619 — 1,572,619 — Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 259,847 — 259,847 — Obligations of states and political subdivisions 73,287 — 72,144 1,143 Corporate debt securities 11,810 — 11,810 — Total available-for-sale debt securities $ 2,119,272 $ — $ 2,118,129 $ 1,143 Loans held for sale 12,472 — 12,472 — Other assets - interest rate swaps 78,211 — 78,211 — Total assets recurring fair value measurements $ 2,223,029 $ 13,074 $ 2,208,812 $ 1,143 Other liabilities - interest rate swaps $ 78,312 $ — $ 78,312 $ — Total liabilities recurring fair value measurements $ 78,312 $ — $ 78,312 $ — Nonrecurring fair value measurements Collateral dependent loans $ 18,289 $ — $ — $ 18,289 Other real estate owned and repossessed assets 1,474 — — 1,474 Total nonrecurring fair value measurements $ 19,763 $ — $ — $ 19,763 December 31, 2023 Fair Value Measurements Using: December 31, Quoted Prices in Significant Significant (in thousands) 2023 (level 1) (level 2) (level 3) Recurring fair value measurements Equity securities $ 12,320 $ 12,320 $ — $ — Available-for-sale debt securities U.S. Government sponsored entities and agencies 208,366 — 208,366 — Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 1,629,684 — 1,629,684 — Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 268,307 — 268,307 — Obligations of states and political subdivisions 76,125 — 74,958 1,167 Corporate debt securities 11,847 — 11,847 — Total available-for-sale debt securities $ 2,194,329 $ — $ 2,193,162 $ 1,167 Loans held for sale 16,354 — 16,354 — Other assets - interest rate swaps 72,183 — 72,183 — Total assets recurring fair value measurements $ 2,295,186 $ 12,320 $ 2,281,699 $ 1,167 Other liabilities - interest rate swaps $ 73,083 $ — $ 73,083 $ — Total liabilities recurring fair value measurements $ 73,083 $ — $ 73,083 $ — Nonrecurring fair value measurements Collateral dependent loans $ 18,273 $ — $ — $ 18,273 Other real estate owned and repossessed assets 1,497 — — 1,497 Total nonrecurring fair value measurements $ 19,770 $ — $ — $ 19,770
Schedule of Assets Measured at Fair Value on Nonrecurring Basis	The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which Wesbanco has utilized level 3 inputs to determine fair value: Quantitative Information about Level 3 Fair Value Measurements Fair Value Valuation Unobservable Range (Weighted (unaudited, in thousands) Estimate Techniques Input Average) March 31, 2024 Collateral dependent loans $ 18,289 Appraisal of collateral (1) Appraisal adjustments (2) ( 0.0 %)/( 0.0 %) Liquidation expenses (2) ( 8.0 %)/( 8.0 %) Other real estate owned and repossessed assets $ 1,474 Appraisal of collateral (1), (3) December 31, 2023 Collateral dependent loans $ 18,273 Appraisal of collateral (1) Appraisal adjustments (2) ( 0.0 %)/( 0.0 %) Liquidation expenses (2) ( 8.0 %)/( 8.0 %) Other real estate owned and repossessed assets $ 1,497 Appraisal of collateral (1), (3) (1) Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs, which are not identifiable. (2) Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range and weighted average of appraisal adjustments and liquidation expense are presented as a percent of the appraisal. (3) Includes estimated liquidation expenses and numerous dissimilar qualitative adjustments by management, which are not identifiable.
Estimates Fair Values of Financial Instruments	The estimated fair values of Wesbanco’s financial instruments are summarized below: Fair Value Measurements at March 31, 2024 Carrying Fair Value Quoted Prices in Significant Significant (unaudited, in thousands) Amount Estimate (level 1) (level 2) (level 3) Financial Assets Cash and due from banks $ 509,669 $ 509,669 $ 509,669 $ — $ — Equity securities 13,074 13,074 13,074 — — Available-for-sale debt securities 2,119,272 2,119,272 — 2,118,129 1,143 Net held-to-maturity debt securities 1,189,827 1,052,444 — 1,052,184 260 Net loans 11,743,977 11,329,520 — — 11,329,520 Loans held for sale 12,472 12,472 — 12,472 — Other assets - interest rate derivatives 78,211 78,211 — 78,211 — Accrued interest receivable 78,564 78,564 78,564 — — Financial Liabilities Deposits 13,496,773 13,475,426 12,157,536 1,317,890 — Federal Home Loan Bank borrowings 1,100,000 1,098,495 — 1,098,495 — Other borrowings 72,935 68,622 68,622 — — Subordinated debt and junior subordinated debt 279,136 230,188 — 230,188 — Other liabilities - interest rate derivatives 78,312 78,312 — 78,312 — Accrued interest payable 15,929 15,929 15,929 — — Fair Value Measurements at December 31, 2023 Carrying Fair Value Quoted Prices in Significant Significant (in thousands) Amount Estimate (level 1) (level 2) (level 3) Financial Assets Cash and due from banks $ 595,383 $ 595,383 $ 595,383 $ — $ — Equity securities 12,320 12,320 12,320 — — Available-for-sale debt securities 2,194,329 2,194,329 — 2,193,162 1,167 Net held-to-maturity debt securities 1,199,335 1,069,159 — 1,068,896 263 Net loans 11,507,786 11,134,250 — — 11,134,250 Loans held for sale 16,354 16,354 — 16,354 — Other assets - interest rate derivatives 72,183 72,183 — 72,183 — Accrued interest receivable 77,435 77,435 77,435 — — Financial Liabilities Deposits 13,168,704 13,146,821 11,937,002 1,209,819 — Federal Home Loan Bank borrowings 1,350,000 1,349,217 — 1,349,217 — Other borrowings 105,893 103,057 103,057 — — Subordinated debt and junior subordinated debt 279,078 240,898 — 240,898 — Other liabilities - interest rate derivatives 73,083 73,083 — 73,083 — Accrued interest payable 11,121 11,121 11,121 — —

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2024
Revenue Recognition [Abstract]
Summary of Revenue Recognition	The following table summarizes the point of revenue recognition and the income recognized for each of the revenue streams for the three months ended March 31, 2024 and 2023, respectively: Point of Revenue For the Three Months (unaudited, in thousands) Recognition 2024 2023 Revenue Streams Trust fees Trust account fees Over time $ 6,099 $ 5,605 WesMark fees Over time 1,983 1,889 Total trust fees 8,082 7,494 Service charges on deposits Commercial banking fees Over time 1,188 609 Personal service charges At a point in time and over time 5,596 5,561 Total service charges on deposits 6,784 6,170 Net securities brokerage revenue Annuity commissions At a point in time 1,972 2,046 Equity and debt security trades At a point in time 80 — Managed money Over time 254 283 Trail commissions Over time 242 247 Total net securities brokerage revenue 2,548 2,576 Payment processing fees (1) At a point in time and over time 829 871 Digital banking income At a point in time 4,704 4,605 Net swap fee and valuation income (2) At a point in time 1,563 799 Mortgage banking income At a point in time 693 426 Net gain on other real estate owned and other assets At a point in time and over time 154 232 (1) Included in other non-interest income. (2) The portion of this line item relating to the change in the fair value of the underlying swaps is not within the scope of ASC 606, and totaled gains (losses) of $ 0.8 million and ($ 1.0 ) million for the three months ended March 31, 2024 and 2023 , respectively.

Comprehensive Income_(Loss) (Ta

Comprehensive Income/(Loss) (Tables)	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Components of Accumulated Other Comprehensive Income (Loss)	The activity in accumulated other comprehensive income/(loss) for the three months ended March 31, 2024 and 2023 is as follows: Accumulated Other Comprehensive Income/(Loss) (1) (unaudited, in thousands) Defined Unrealized Total Balance at December 31, 2023 $ 6,515 $ ( 233,208 ) $ ( 226,693 ) Other comprehensive loss before reclassifications — ( 8,118 ) ( 8,118 ) Amounts reclassified from accumulated other comprehensive loss ( 52 ) ( 59 ) ( 111 ) Period change ( 52 ) ( 8,177 ) ( 8,229 ) Balance at March 31, 2024 $ 6,463 $ ( 241,385 ) $ ( 234,922 ) Balance at December 31, 2022 $ ( 535 ) $ ( 261,881 ) $ ( 262,416 ) Other comprehensive income before reclassifications — 27,828 27,828 Amounts reclassified from accumulated other comprehensive income 75 114 189 Period change 75 27,942 28,017 Balance at March 31, 2023 $ ( 460 ) $ ( 233,939 ) $ ( 234,399 ) (1) All amounts are net of tax. Related income tax expense or benefit is calculated using a combined Federal and State income tax rate approximating 24 % in both periods presented.
Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income	The following table provides details about amounts reclassified from accumulated other comprehensive income for the three months ended March 31, 2024 and 2023: Details about Accumulated Other Comprehensive For the Three Months Affected Line Item in the Statement (unaudited, in thousands) 2024 2023 Debt securities available-for-sale (1) : Net securities losses reclassified into earnings $ — $ 151 Net securities gains/(losses) (Non-interest income) Related income tax effect ⁽²⁾ ( 59 ) ( 37 ) Provision for income taxes Net effect on accumulated other comprehensive ( 59 ) 114 Defined benefit plans (3) : Amortization of net loss and prior service costs ( 101 ) 98 Employee benefits (Non-interest expense) Related income tax effect ⁽²⁾ 49 ( 23 ) Provision for income taxes Net effect on accumulated other comprehensive ( 52 ) 75 Total reclassifications for the period $ ( 111 ) $ 189 (1) For additional detail related to unrealized gains on securities and related amounts reclassified from accumulated other comprehensive income, see Note 3, “Securities.” (2) Income tax expense or benefit is calculated using a combined Federal and State income tax rate approximating 24 % in both periods presented. (3) Included in the computation of net periodic pension cost. See Note 7, “Benefit Plans” for additional detail.

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments to Extend Credit, Guarantees and Various Letters of Credit Outstanding	The following table presents total commitments to extend credit, guarantees and various letters of credit outstanding: March 31, December 31, (unaudited, in thousands) 2024 2023 Lines of credit $ 3,991,363 $ 4,016,658 Loans approved but not closed 546,561 275,954 Overdraft limits 400,151 391,598 Letters of credit 41,812 38,929 Contingent obligations and other guarantees 9,809 15,037

Business Segments (Tables)

Business Segments (Tables)	3 Months Ended
	Mar. 31, 2024
Segment Reporting [Abstract]
Financial Information by Business Segment	Condensed financial information by business segment is presented below: Trust and Community Investment (unaudited, in thousands) Banking Services Consolidated For the Three Months Ended March 31, 2024 Interest and dividend income $ 195,333 $ — $ 195,333 Interest expense 81,367 — 81,367 Net interest income 113,966 — 113,966 Provision for credit losses 4,014 — 4,014 Net interest income after provision for credit losses 109,952 — 109,952 Non-interest income 22,547 8,082 30,629 Non-interest expense 91,968 5,223 97,191 Income before provision for income taxes 40,531 2,859 43,390 Provision for income taxes 7,097 600 7,697 Net income 33,434 2,259 35,693 Preferred stock dividends 2,531 — 2,531 Net income available to common shareholders $ 30,903 $ 2,259 $ 33,162 For the Three Months Ended March 31, 2023 Interest and dividend income $ 160,555 $ — $ 160,555 Interest expense 36,223 — 36,223 Net interest income 124,332 — 124,332 Provision for credit losses 3,577 — 3,577 Net interest income after provision for credit losses 120,755 — 120,755 Non-interest income 20,159 7,494 27,653 Non-interest expense 91,617 4,508 96,125 Income before provision for income taxes 49,297 2,986 52,283 Provision for income taxes 9,315 627 9,942 Net income 39,982 2,359 42,341 Preferred stock dividends 2,531 — 2,531 Net income available to common shareholders $ 37,451 $ 2,359 $ 39,810

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail)	Mar. 31, 2024
ASU 2023-05 - Business Combinations-Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement
Summary Of Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2025
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
ASU 2023-02 Investments Equity Method and Joint Ventures (Topic 323)
Summary Of Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2024
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
ASU 2023-01 - Leases (Topic 842): Common Control Arrangements
Summary Of Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2024
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
ASU 2022-04 - Liabilities Supplier Finance Programs (Sub-topic 405-50)
Summary Of Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2024
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
ASU 2022-03 - Fair Value Measurement (Topic 820)
Summary Of Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2024
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true

Earnings Per Common Share - Sum

Earnings Per Common Share - Summary of Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator for both basic and diluted earnings per common share:
Net income available to common shareholders	$ 33,162	$ 39,810
Denominator:
Total average basic common shares outstanding	59,382,758	59,217,711
Effect of dilutive stock options and other stock compensation	140,921	157,342
Total diluted average common shares outstanding	59,523,679	59,375,053
Earnings per common share - basic	$ 0.56	$ 0.67
Earnings per common share - diluted	$ 0.56	$ 0.67

Earnings Per Common Share - Add

Earnings Per Common Share - Additional Information (Detail) - shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Line Items]
Shares contingently issuable under shareholder return plan	12,000	42,624
Stock Option [Member]
Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Line Items]
Securities excluded from computation of net income per diluted shares	567,251	483,011
Restricted Stock [Member]
Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Line Items]
Shares contingently issuable under shareholder return plan	87,135	61,510
2023 TSR Plan [Member]
Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Line Items]
Shares contingently issuable under shareholder return plan		0
2023 and 2024 TSR Plan [Member]
Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Line Items]
Shares contingently issuable under shareholder return plan	0

Securities - Schedule of Fair V

Securities - Schedule of Fair Value and Amortized Cost of Available-for-sale and Held-to-maturity Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	$ 2,437,733	$ 2,501,188
Available-for-sale, Gross Unrealized Gains	120	225
Available-for-sale, Gross Unrealized Losses	(318,581)	(307,084)
Available-for-sale, Fair Value	2,119,272	2,194,329
Held-to-maturity, Amortized Cost	1,190,010	1,199,527
Held-to-maturity, Gross Unrealized Gains	356	852
Held-to-maturity, Gross Unrealized Losses	(137,922)	(131,220)
Held-to-maturity securities, Fair value	1,052,444	1,069,159
Total securities, Amortized Cost	3,627,743	3,700,715
Total securities, Gross Unrealized Gains	476	1,077
Total securities, Gross Unrealized Losses	(456,503)	(438,304)
Total securities, Fair Value	3,171,716	3,263,488
U.S. Government Sponsored Entities and Agencies [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	234,707	238,676
Available-for-sale, Gross Unrealized Losses	(32,998)	(30,310)
Available-for-sale, Fair Value	201,709	208,366
Held-to-maturity, Amortized Cost	3,533	3,587
Held-to-maturity, Gross Unrealized Losses	(342)	(313)
Held-to-maturity securities, Fair value	3,191	3,274
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	1,849,231	1,897,511
Available-for-sale, Gross Unrealized Gains	46	47
Available-for-sale, Gross Unrealized Losses	(276,658)	(267,874)
Available-for-sale, Fair Value	1,572,619	1,629,684
Held-to-maturity, Amortized Cost	37,408	38,893
Held-to-maturity, Gross Unrealized Losses	(3,222)	(3,017)
Held-to-maturity securities, Fair value	34,186	35,876
Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	265,195	274,220
Available-for-sale, Gross Unrealized Gains	38	11
Available-for-sale, Gross Unrealized Losses	(5,386)	(5,924)
Available-for-sale, Fair Value	259,847	268,307
Obligations of State and Political Subdivisions [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	76,635	78,819
Available-for-sale, Gross Unrealized Gains	36	167
Available-for-sale, Gross Unrealized Losses	(3,384)	(2,861)
Available-for-sale, Fair Value	73,287	76,125
Held-to-maturity, Amortized Cost	1,128,828	1,136,779
Held-to-maturity, Gross Unrealized Gains	356	852
Held-to-maturity, Gross Unrealized Losses	(133,972)	(127,518)
Held-to-maturity securities, Fair value	995,212	1,010,113
Corporate Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	11,965	11,962
Available-for-sale, Gross Unrealized Losses	(155)	(115)
Available-for-sale, Fair Value	11,810	11,847
Held-to-maturity, Amortized Cost	20,241	20,268
Held-to-maturity, Gross Unrealized Losses	(386)	(372)
Held-to-maturity securities, Fair value	$ 19,855	$ 19,896

Securities - Schedule of Fair_2

Securities - Schedule of Fair Value and Amortized Cost of Available-for-sale and Held-to-maturity Securities (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Allowance for credit losses, held-to-maturity debt securities	$ 183	$ 192

Securities - Additional Informa

Securities - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) Holding	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) Holding
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Maximum percentage of equity of one issuer	10%
Number of holdings greater than specified percentage of equity | Holding	0		0
Equities securities	$ 13,074		$ 12,320
Other assets	385,976		388,561
Proceeds from sale of available-for-sale securities	0	$ 20,498
Net unrealized losses on available-for-sale securities included in AOCI	241,400		233,200
Accrued interest receivable	78,564		77,435
Federal home loan bank stock, Total	51,900		62,000
Asset Pledged as Security
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Other assets	2,200,000		2,100,000
Us Government Securities and Mortgage Backed and Collateralized Securities Issued By Direct Governmental Entity or Government-Sponsored Entity [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Estimated credit losses	0
Held-to-maturity Securities [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Accrued interest receivable	8,600		$ 8,800
Grantor Trusts [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Equities securities	$ 10,500

Securities - Schedule of Amorti

Securities - Schedule of Amortized Cost and Fair Value of Available-for-Sale and Held-to-Maturity Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Amortized Cost And Fair Value Debt Securities [Abstract]
Total available-for-sale debt securities, Amortized Cost, Within one year	$ 25,261
Total available-for-sale debt securities, Amortized Cost, After 1 year through 5 years	159,144
Total available-for-sale debt securities, Amortized Cost, After 5 years through 10 years	307,040
Total available-for-sale debt securities, Amortized Cost, After 10 years	1,946,288
Available-for-sale, Amortized Cost	2,437,733	$ 2,501,188
Total held-to-maturity debt securities, Amortized Cost, Within one year	24,865
Total held-to-maturity debt securities, Amortized Cost, After 1 year through 5 years	111,641
Total held-to-maturity debt securities, Amortized Cost, After 5 years through 10 years	489,993
Total held-to-maturity debt securities, Amortized Cost, After 10 years	563,511
Held-to-maturity, Amortized Cost	1,190,010	1,199,527
Total debt securities, Amortized Cost	3,627,743
Total available-for-sale debt securities, Fair Value, Within one year	24,946
Total available-for-sale debt securities, Fair Value, After 1 year through 5 years	154,948
Total available-for-sale debt securities, Fair Value, After 5 years through 10 years	290,268
Total available-for-sale debt securities, Fair Value, After 10 years	1,649,110
Total available-for-sale debt securities, Fair Value	2,119,272	2,194,329
Total held-to-maturity debt securities, Fair Value, Within one year	24,695
Total held-to-maturity debt securities, Fair Value, After 1 year through 5 years	109,756
Total held-to-maturity debt securities, Fair Value, After 5 years through 10 years	451,150
Total held-to-maturity debt securities, Fair Value, After 10 years	466,843
Total held-to-maturity debt securities, Fair Value	1,052,444	1,069,159
Total debt securities, Fair Value	$ 3,171,716	$ 3,263,488

Securities - Schedule of Gross

Securities - Schedule of Gross Realized Gains and Losses on the Sales and Calls of Securities as well as Gains and Losses on Equity Securities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Debt securities:
Gross realized gains		$ 64
Gross realized losses		(197)
Net losses on debt securities		(133)
Equity securities:
Net unrealized gains recognized on securities still held	$ 537	278
Net securities gains	$ 537	$ 145

Securities - Schedule of Allowa

Securities - Schedule of Allowance for Credit Losses on Held-to-maturity Securities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Beginning balance	$ 192
Ending balance	183
ASU 2016-13 [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Beginning balance	192	$ 220
Current period provision	(9)	(8)
Ending balance	183	212
ASU 2016-13 [Member] | Obligations of State and Political Subdivisions [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Beginning balance	160	167
Current period provision		(6)
Ending balance	160	161
ASU 2016-13 [Member] | Corporate Debt Securities [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Beginning balance	32	53
Current period provision	(9)	(2)
Ending balance	$ 23	$ 51

Securities - Schedule of Unreal

Securities - Schedule of Unrealized Losses on Investment Securities (Detail) $ in Thousands	Mar. 31, 2024 USD ($) Security	Dec. 31, 2023 USD ($) Security
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 15,289	$ 20,407
Less than 12 months, Unrealized Losses	$ (83)	$ (136)
Less than 12 months, Number of Securities | Security	14	24
12 months or more, Fair Value	$ 2,076,993	$ 2,141,624
12 months or more, Unrealized Losses	$ (318,498)	$ (306,948)
12 months or more, Number of Securities | Security	669	654
Fair Value, Total	$ 2,092,282	$ 2,162,031
Unrealized Losses, Total	$ (318,581)	$ (307,084)
Number of Securities Total | Security	683	678
U.S. Government Sponsored Entities and Agencies [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value		$ 18
Less than 12 months, Unrealized Losses		$ (1)
Less than 12 months, Number of Securities | Security		1
12 months or more, Fair Value	$ 201,709	$ 208,348
12 months or more, Unrealized Losses	$ (32,998)	$ (30,309)
12 months or more, Number of Securities | Security	45	45
Fair Value, Total	$ 201,709	$ 208,366
Unrealized Losses, Total	$ (32,998)	$ (30,310)
Number of Securities Total | Security	45	46
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
12 months or more, Fair Value	$ 1,568,530	$ 1,625,144
12 months or more, Unrealized Losses	$ (276,658)	$ (267,874)
12 months or more, Number of Securities | Security	466	467
Fair Value, Total	$ 1,568,530	$ 1,625,144
Unrealized Losses, Total	$ (276,658)	$ (267,874)
Number of Securities Total | Security	466	467
Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value		$ 5,520
Less than 12 months, Unrealized Losses		$ (31)
Less than 12 months, Number of Securities | Security		1
12 months or more, Fair Value	$ 243,531	$ 251,765
12 months or more, Unrealized Losses	$ (5,386)	$ (5,893)
12 months or more, Number of Securities | Security	60	60
Fair Value, Total	$ 243,531	$ 257,285
Unrealized Losses, Total	$ (5,386)	$ (5,924)
Number of Securities Total | Security	60	61
Obligations of State and Political Subdivisions [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 8,811	$ 10,387
Less than 12 months, Unrealized Losses	$ (61)	$ (86)
Less than 12 months, Number of Securities | Security	10	19
12 months or more, Fair Value	$ 58,392	$ 49,002
12 months or more, Unrealized Losses	$ (3,323)	$ (2,775)
12 months or more, Number of Securities | Security	97	79
Fair Value, Total	$ 67,203	$ 59,389
Unrealized Losses, Total	$ (3,384)	$ (2,861)
Number of Securities Total | Security	107	98
Corporate Debt Securities [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 6,478	$ 4,482
Less than 12 months, Unrealized Losses	$ (22)	$ (18)
Less than 12 months, Number of Securities | Security	4	3
12 months or more, Fair Value	$ 4,831	$ 7,365
12 months or more, Unrealized Losses	$ (133)	$ (97)
12 months or more, Number of Securities | Security	1	3
Fair Value, Total	$ 11,309	$ 11,847
Unrealized Losses, Total	$ (155)	$ (115)
Number of Securities Total | Security	5	6

Loans and the Allowance for C_3

Loans and the Allowance for Credit Losses - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment [Line Items]
Net deferred loan fee income (costs)	$ (11,800,000)		$ (11,500,000)
Un-accreted discount on purchased loans from acquisitions	12,700,000			$ 13,500,000
Reserve on accrued interest related to CARES Act	$ 100,000
Percentage of national unemployment projection	4.30%
Expected average percentage of national unemployment in future	4.70%
Accrued interest receivable for loans	$ 63,200,000		62,200,000
Accrued interest receivable for loans related to CARES Act	15,100,000		15,600,000
Aggregate amount of residential real estate, home equity and consumer loans classified as substandard	21,300,000		20,000,000
Internally assigned loan grades to residential real estate, home equity and consumer loans	4,900,000		4,600,000
Unfunded commercial loan commitments	62,800,000		21,200,000
Other real estate owned	1,210,000		1,207,000
Net charge-offs	5,935,000	$ 1,919,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Other real estate owned	0		0
Foreclosure proceedings in process on residential real estate loans	4,200,000		4,000,000
Net charge-offs	101,000	(88,000)
90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Modification loans	0	0
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Net charge-offs	4,409,000	$ 186,000
Commercial and Industrial [Member] | Maximum [Member]
Financing Receivable, Recorded Investment [Line Items]
Annual sales of borrowers	100,000,000
Unfunded Loan Commitment [Member]
Financing Receivable, Recorded Investment [Line Items]
Modification loans	$ 700,000		$ 1,800,000

Loans and the Allowance for C_4

Loans and the Allowance for Credit Losses - Schedule of Recorded Investment in Loans by Category (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	$ 11,873,167	$ 11,638,461
Loans held for sale	12,472	16,354
Total loans	11,885,639	11,654,815
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	1,683,172	1,670,659
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	6,754,933	6,565,448
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	1,087,649	1,055,865
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	5,667,284	5,509,583
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	2,469,357	2,438,574
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	224,732	229,561
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	$ 740,973	$ 734,219

Loans and the Allowance for C_5

Loans and the Allowance for Credit Losses - Summary of Changes in Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses - loans, beginning balance	$ 130,675	$ 117,790
Allowance for credit losses - loan commitments, beginning balance	8,604	8,368
Total beginning allowance for credit losses - loans and loan commitments	139,279	126,158
Provision for loan losses	4,450	2,827
Provision for loan commitments	(429)	759
Total provision for credit losses - loans and loan commitments	4,021	3,586
Charge-offs	(7,583)	(3,319)
Recoveries	1,648	1,400
Net (charge-offs) recoveries	(5,935)	(1,919)
Allowance for credit losses - loans, ending balance	129,190	118,698
Allowance for credit losses - loan commitments, ending balance	8,175	9,127
Total ending allowance for credit losses - loans and loan commitments	137,365	127,825
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses - loans, beginning balance	36,644	31,540
Allowance for credit losses - loan commitments, beginning balance	429
Total beginning allowance for credit losses - loans and loan commitments	37,073	31,540
Provision for loan losses	5,806	(2,783)
Provision for loan commitments	124	797
Total provision for credit losses - loans and loan commitments	5,930	(1,986)
Charge-offs	(4,810)	(320)
Recoveries	401	134
Net (charge-offs) recoveries	(4,409)	(186)
Allowance for credit losses - loans, ending balance	38,041	28,571
Allowance for credit losses - loan commitments, ending balance	553	797
Total ending allowance for credit losses - loans and loan commitments	38,594	29,368
Deposit Overdraft [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses - loans, beginning balance	1,366	1,285
Total beginning allowance for credit losses - loans and loan commitments	1,366	1,285
Provision for loan losses	194	(103)
Total provision for credit losses - loans and loan commitments	194	(103)
Charge-offs	(453)	(401)
Recoveries	128	140
Net (charge-offs) recoveries	(325)	(261)
Allowance for credit losses - loans, ending balance	1,235	921
Total ending allowance for credit losses - loans and loan commitments	1,235	921
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses - loans, beginning balance	7,123	6,737
Allowance for credit losses - loan commitments, beginning balance	6,894	6,025
Total beginning allowance for credit losses - loans and loan commitments	14,017	12,762
Provision for loan losses	858	(1,440)
Provision for loan commitments	(568)	(51)
Total provision for credit losses - loans and loan commitments	290	(1,491)
Charge-offs	(813)	(222)
Recoveries		73
Net (charge-offs) recoveries	(813)	(149)
Allowance for credit losses - loans, ending balance	7,168	5,148
Allowance for credit losses - loan commitments, ending balance	6,326	5,974
Total ending allowance for credit losses - loans and loan commitments	13,494	11,122
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses - loans, beginning balance	59,351	52,659
Total beginning allowance for credit losses - loans and loan commitments	59,351	52,659
Provision for loan losses	(3,621)	2,508
Total provision for credit losses - loans and loan commitments	(3,621)	2,508
Charge-offs	(58)	(1,355)
Recoveries	432	276
Net (charge-offs) recoveries	374	(1,079)
Allowance for credit losses - loans, ending balance	56,104	54,088
Total ending allowance for credit losses - loans and loan commitments	56,104	54,088
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses - loans, beginning balance	21,218	18,208
Allowance for credit losses - loan commitments, beginning balance	1,276	2,215
Total beginning allowance for credit losses - loans and loan commitments	22,494	20,423
Provision for loan losses	650	4,407
Provision for loan commitments	9	(10)
Total provision for credit losses - loans and loan commitments	659	4,397
Charge-offs	(135)	13
Recoveries	34	75
Net (charge-offs) recoveries	(101)	88
Allowance for credit losses - loans, ending balance	21,767	22,703
Allowance for credit losses - loan commitments, ending balance	1,285	2,205
Total ending allowance for credit losses - loans and loan commitments	23,052	24,908
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses - loans, beginning balance	3,956	3,127
Total beginning allowance for credit losses - loans and loan commitments	3,956	3,127
Provision for loan losses	538	97
Total provision for credit losses - loans and loan commitments	538	97
Charge-offs	(1,098)	(776)
Recoveries	455	622
Net (charge-offs) recoveries	(643)	(154)
Allowance for credit losses - loans, ending balance	3,851	3,070
Total ending allowance for credit losses - loans and loan commitments	3,851	3,070
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses - loans, beginning balance	1,017	4,234
Allowance for credit losses - loan commitments, beginning balance	5	128
Total beginning allowance for credit losses - loans and loan commitments	1,022	4,362
Provision for loan losses	25	141
Provision for loan commitments	6	23
Total provision for credit losses - loans and loan commitments	31	164
Charge-offs	(216)	(258)
Recoveries	198	80
Net (charge-offs) recoveries	(18)	(178)
Allowance for credit losses - loans, ending balance	1,024	4,197
Allowance for credit losses - loan commitments, ending balance	11	151
Total ending allowance for credit losses - loans and loan commitments	$ 1,035	$ 4,348

Loans and the Allowance for C_6

Loans and the Allowance for Credit Losses - Summary of Changes in Allowance for Credit Losses (Parenthetical) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Receivables [Abstract]
Deposit overdrafts	$ 4.1	$ 4.7	$ 3.6

Loans and the Allowance for C_7

Loans and the Allowance for Credit Losses - Allowance for Credit Losses and Recorded Investments in Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	$ 5,591	$ 5,745
Allowance for loans collectively evaluated for impairment	123,599	124,930
Allowance for loan commitments	8,175	8,604	$ 9,127	$ 8,368
Total allowance for credit losses - loans and commitments	137,365	139,279	127,825	126,158
Individually evaluated for credit loss	36,746	37,045
Collectively-evaluated for credit losses	11,836,421	11,601,416
Total loans	11,873,167	11,638,461
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	38,041	36,644
Allowance for loan commitments	553	429	797
Total allowance for credit losses - loans and commitments	38,594	37,073	29,368	31,540
Individually evaluated for credit loss	45	116
Collectively-evaluated for credit losses	1,683,127	1,670,543
Total loans	1,683,172	1,670,659
Deposit Overdraft [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	1,235	1,366
Total allowance for credit losses - loans and commitments	1,235	1,366	921	1,285
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	6,754,933	6,565,448
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	7,168	7,123
Allowance for loan commitments	6,326	6,894	5,974	6,025
Total allowance for credit losses - loans and commitments	13,494	14,017	11,122	12,762
Collectively-evaluated for credit losses	1,087,649	1,055,865
Total loans	1,087,649	1,055,865
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	5,591	5,745
Allowance for loans collectively evaluated for impairment	50,513	53,606
Total allowance for credit losses - loans and commitments	56,104	59,351	54,088	52,659
Individually evaluated for credit loss	36,701	36,929
Collectively-evaluated for credit losses	5,630,583	5,472,654
Total loans	5,667,284	5,509,583
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	21,767	21,218
Allowance for loan commitments	1,285	1,276	2,205	2,215
Total allowance for credit losses - loans and commitments	23,052	22,494	24,908	20,423
Collectively-evaluated for credit losses	2,469,357	2,438,574
Total loans	2,469,357	2,438,574
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	3,851	3,956
Total allowance for credit losses - loans and commitments	3,851	3,956	3,070	3,127
Collectively-evaluated for credit losses	224,732	229,561
Total loans	224,732	229,561
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	1,024	1,017
Allowance for loan commitments	11	5	151	128
Total allowance for credit losses - loans and commitments	1,035	1,022	$ 4,348	$ 4,362
Collectively-evaluated for credit losses	740,973	734,219
Total loans	$ 740,973	$ 734,219

Loans and the Allowance for C_8

Loans and the Allowance for Credit Losses - Allowance for Credit Losses and Recorded Investments in Loans (Parenthetical) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Receivables [Abstract]
Deposit overdrafts	$ 4.1	$ 4.7	$ 3.6

Loans and the Allowance for C_9

Loans and the Allowance for Credit Losses - Summary of Commercial Loans by Risk Grade (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	$ 11,873,167	$ 11,638,461
Commercial and Industrial [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	1,683,172	1,670,659
Commercial and Industrial [Member] | Pass [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	1,588,033	1,586,683
Commercial and Industrial [Member] | Criticized [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	65,431	73,204
Commercial and Industrial [Member] | Classified - substandard [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	29,708	10,772
Commercial Portfolio Segment [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	8,438,105	8,236,107
Commercial Portfolio Segment [Member] | Pass [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	8,164,671	7,977,436
Commercial Portfolio Segment [Member] | Criticized [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	171,536	183,174
Commercial Portfolio Segment [Member] | Classified - substandard [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	101,898	75,497
Commercial Portfolio Segment [Member] | Commercial Real Estate - Land and Construction [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	1,087,649	1,055,865
Commercial Portfolio Segment [Member] | Commercial Real Estate - Land and Construction [Member] | Pass [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	1,084,975	1,053,359
Commercial Portfolio Segment [Member] | Commercial Real Estate - Land and Construction [Member] | Criticized [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	2,457	2,497
Commercial Portfolio Segment [Member] | Commercial Real Estate - Land and Construction [Member] | Classified - substandard [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	217	9
Commercial Portfolio Segment [Member] | Commercial Real Estate - Improved Property [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	5,667,284	5,509,583
Commercial Portfolio Segment [Member] | Commercial Real Estate - Improved Property [Member] | Pass [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	5,491,663	5,337,394
Commercial Portfolio Segment [Member] | Commercial Real Estate - Improved Property [Member] | Criticized [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	103,648	107,473
Commercial Portfolio Segment [Member] | Commercial Real Estate - Improved Property [Member] | Classified - substandard [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	71,973	64,716
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	1,683,172	1,670,659
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Pass [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	1,588,033	1,586,683
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Criticized [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	65,431	73,204
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Classified - substandard [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	$ 29,708	$ 10,772

Loans and the Allowance for _10

Loans and the Allowance for Credit Losses - Summary of Age Analysis of Loan Categories (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	$ 11,873,167	$ 11,638,461
90 Days or More Past Due and Accruing	5,408	9,638
Loans held for sale	12,472	16,354
Total loans, current	11,839,851	11,604,632
Total loans	11,885,639	11,654,815
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	740,973	734,219
90 Days or More Past Due and Accruing	1,223	1,407
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	6,754,933	6,565,448
90 Days or More Past Due and Accruing	408	1,899
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	2,469,357	2,438,574
90 Days or More Past Due and Accruing	3,151	2,602
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	224,732	229,561
90 Days or More Past Due and Accruing	491	546
Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,087,649	1,055,865
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	5,667,284	5,509,583
90 Days or More Past Due and Accruing	408	1,899
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,683,172	1,670,659
90 Days or More Past Due and Accruing	135	3,184
Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	32,919	26,808
Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	11,827,379	11,588,278
Loans held for sale, current	12,472	16,354
Current [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	730,521	724,293
Current [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	6,738,996	6,546,811
Current [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	2,458,403	2,429,200
Current [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	220,302	223,989
Current [Member] | Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,087,649	1,055,865
Current [Member] | Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	5,651,347	5,490,946
Current [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,679,157	1,663,985
Current [Member] | Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	11,054	9,138
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	15,226	15,152
30-59 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	4,869	4,691
30-59 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	2,852	4,416
30-59 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	3,160	1,572
30-59 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	2,905	3,833
30-59 Days Past Due [Member] | Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	2,852	4,416
30-59 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,440	640
30-59 Days Past Due [Member] | Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,612	1,300
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	5,605	9,729
60-89 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	2,249	1,198
60-89 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,226	3,627
60-89 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	478	2,471
60-89 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,019	1,178
60-89 Days Past Due [Member] | Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,226	3,627
60-89 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	633	1,255
60-89 Days Past Due [Member] | Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	704	706
90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	24,957	25,302
90 Days or More Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	3,334	4,037
90 Days or More Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	11,859	10,594
90 Days or More Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	7,316	5,331
90 Days or More Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	506	561
90 Days or More Past Due [Member] | Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	11,859	10,594
90 Days or More Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,942	4,779
90 Days or More Past Due [Member] | Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	19,549	15,664
Total Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	45,788	50,183
Total Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	10,452	9,926
Total Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	15,937	18,637
Total Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	10,954	9,374
Total Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	4,430	5,572
Total Past Due [Member] | Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	15,937	18,637
Total Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	4,015	6,674
Total Past Due [Member] | Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	$ 21,865	$ 17,670

Loans and the Allowance for _11

Loans and the Allowance for Credit Losses - Summary of Nonperforming Loans (Detail) - Nonperforming Loans [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	$ 42,460		$ 35,493
Recorded Investment, With no specific allowance recorded	32,919		26,808
Total impaired loans, Unpaid principal balance	42,460		35,493
Total impaired loans, Recorded investment			26,808
Average recorded investment, with no related specific allowance	29,864	$ 40,317
Total impaired loans, Average recorded investment	29,864	40,317
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	16,367		15,128
Recorded Investment, With no specific allowance recorded	11,679		10,582
Average recorded investment, with no related specific allowance	11,131	14,447
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	119		104
Recorded Investment, With no specific allowance recorded	73		51
Average recorded investment, with no related specific allowance	62	134
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	6,420		6,521
Recorded Investment, With no specific allowance recorded	4,669		4,777
Average recorded investment, with no related specific allowance	4,723	5,118
Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	1,023
Recorded Investment, With no specific allowance recorded	210
Average recorded investment, with no related specific allowance	105	56
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	14,871		11,248
Recorded Investment, With no specific allowance recorded	13,523		9,557
Average recorded investment, with no related specific allowance	11,540	17,401
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	3,660		2,492
Recorded Investment, With no specific allowance recorded	2,765		$ 1,841
Average recorded investment, with no related specific allowance	$ 2,303	$ 3,161

Loans and the Allowance for _12

Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Impaired [Line Items]
Non-accrual loans	$ 32,919	$ 26,808
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	2,765	1,841
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	4,669	4,777
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	13,733	9,557
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	210
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	13,523	9,557
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	11,679	10,582
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	$ 73	$ 51

Loans and the Allowance for _13

Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans (Parenthetical) (Detail)	Mar. 31, 2024 USD ($) Borrower	Dec. 31, 2023 USD ($) Borrower
Receivables [Abstract]
Number of borrowers with loan balance greater than one million | Borrower	4	2
Borrowers with large amount of loans outstanding, minimum amount of loans per borrower	$ 1,000,000	$ 1,000,000
Borrowers with large amount of loans outstanding, net	$ 10,900,000	$ 7,200,000

Loans and the Allowance for _14

Loans and the Allowance for Credit Losses - Summary of Details of Portfolio Loans Modified by Loan Category (Details) - ASU 2022-02 Financial Instruments - Credit Losses (Topic 326) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Modified [Line Items]
Modification loans	$ 26,083	$ 17,007
Percentage of total by loan category	0.20%	0.20%
Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 24,989	$ 16,589
Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modification loans	1,094	418
Home Equity [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 350	$ 291
Percentage of total by loan category	0%	0%
Home Equity [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modification loans		$ 8
Home Equity [Member] | Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 350	283
Residential Real Estate [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 579	$ 101
Percentage of total by loan category	0%	0%
Residential Real Estate [Member] | Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 579	$ 101
Consumer [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 124	$ 34
Percentage of total by loan category	0.10%	0%
Consumer [Member] | Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 124	$ 34
Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified [Line Items]
Modification loans		$ 6,000
Percentage of total by loan category		0.80%
Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modification loans		$ 6,000
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 24,989	$ 3,738
Percentage of total by loan category	0.40%	0.10%
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 24,989	$ 3,738
Commercial and Industrial [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 41	$ 6,843
Percentage of total by loan category	0%	0.50%
Commercial and Industrial [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modification loans		$ 6,843
Commercial and Industrial [Member] | Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 41

Loans and the Allowance for _15

Loans and the Allowance for Credit Losses - Summary of Financial Impacts of Loan Modifications and Payment Deferrals to Portfolio Loans (Details) - ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Home Equity [Member]
Financing Receivable, Modified [Line Items]
Weighted-average term extension (in months)		120 months
Commercial and Industrial [Member]
Financing Receivable, Modified [Line Items]
Weighted-average term extension (in months)		4 months
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Modified [Line Items]
Weighted-average term extension (in months)		3 months
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified [Line Items]
Weighted-average term extension (in months)	9 months	34 months

Loans and the Allowance for _16

Loans and the Allowance for Credit Losses - Summary of Aging Analysis of Portfolio Loans Restructured (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	$ 11,873,167	$ 11,638,461
ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	40,812
Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	740,973	734,219
Home Equity [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,263
Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,683,172	1,670,659
Commercial and Industrial [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	8,572
Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	6,754,933	6,565,448
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,087,649	1,055,865
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	5,667,284	5,509,583
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	29,041
Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,469,357	2,438,574
Residential Real Estate [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,475
Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	224,732	229,561
Consumer [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	461
30-59 Days Past Due [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	15,226	15,152
30-59 Days Past Due [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	90
30-59 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	4,869	4,691
30-59 Days Past Due [Member] | Home Equity [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	14
30-59 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,440	640
30-59 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,852	4,416
30-59 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,852	4,416
30-59 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	3,160	1,572
30-59 Days Past Due [Member] | Residential Real Estate [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	37
30-59 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,905	3,833
30-59 Days Past Due [Member] | Consumer [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	39
60-89 Days Past Due [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	5,605	9,729
60-89 Days Past Due [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	101
60-89 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,249	1,198
60-89 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	633	1,255
60-89 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,226	3,627
60-89 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,226	3,627
60-89 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	478	2,471
60-89 Days Past Due [Member] | Residential Real Estate [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	68
60-89 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,019	1,178
60-89 Days Past Due [Member] | Consumer [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	33
90 Days or More Past Due [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	24,957	25,302
90 Days or More Past Due [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	453
90 Days or More Past Due [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	3,334	4,037
90 Days or More Past Due [Member] | Home Equity [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	233
90 Days or More Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,942	4,779
90 Days or More Past Due [Member] | Commercial and Industrial [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	41
90 Days or More Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	11,859	10,594
90 Days or More Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	11,859	10,594
90 Days or More Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	7,316	5,331
90 Days or More Past Due [Member] | Residential Real Estate [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	170
90 Days or More Past Due [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	506	561
90 Days or More Past Due [Member] | Consumer [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	9
Total Past Due [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	45,788	50,183
Total Past Due [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	644
Total Past Due [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	10,452	9,926
Total Past Due [Member] | Home Equity [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	247
Total Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	4,015	6,674
Total Past Due [Member] | Commercial and Industrial [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	41
Total Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	15,937	18,637
Total Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	15,937	18,637
Total Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	10,954	9,374
Total Past Due [Member] | Residential Real Estate [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	275
Total Past Due [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	4,430	5,572
Total Past Due [Member] | Consumer [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	81
Current [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	11,827,379	11,588,278
Current [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	40,168
Current [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	730,521	724,293
Current [Member] | Home Equity [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,016
Current [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,679,157	1,663,985
Current [Member] | Commercial and Industrial [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	8,531
Current [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	6,738,996	6,546,811
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,087,649	1,055,865
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	5,651,347	5,490,946
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	29,041
Current [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,458,403	2,429,200
Current [Member] | Residential Real Estate [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,200
Current [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	220,302	$ 223,989
Current [Member] | Consumer [Member] | ASU 2022-02 Financial Instruments - Credit Losses (Topic 326)
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	$ 380

Loans and the Allowance for _17

Loans and the Allowance for Credit Losses - Summary of Amortized Cost Basis Loan Balances by Year of Origination and Credit Quality Indicator (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 11,873,167	$ 11,638,461
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	15,226	15,152
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,605	9,729
90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	24,957	25,302
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	11,894	12,828
Amortized Cost Basis by Origination Year 2023	1,752	1,959
Amortized Cost Basis by Origination Year 2022	2,366	1,568
Amortized Cost Basis by Origination Year 2021	1,316	2,449
Amortized Cost Basis by Origination Year 2020	2,568	1,964
Amortized Cost Basis by Origination Year, Prior to 2019	25,455	26,482
Revolving Loans	693,305	685,163
Revolving Loans Converted to Term	2,317	1,806
Total loans	740,973	734,219
Home Equity [Member] | Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	11,894	12,675
Amortized Cost Basis by Origination Year 2023	993	1,235
Amortized Cost Basis by Origination Year 2022	1,676	1,467
Amortized Cost Basis by Origination Year 2021	1,059	1,571
Amortized Cost Basis by Origination Year 2020	1,840	1,614
Amortized Cost Basis by Origination Year, Prior to 2019	21,352	22,484
Revolving Loans	689,877	681,848
Revolving Loans Converted to Term	1,830	1,399
Total loans	730,521	724,293
Home Equity [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024		34
Amortized Cost Basis by Origination Year 2023	59	193
Amortized Cost Basis by Origination Year 2022	251	85
Amortized Cost Basis by Origination Year 2021	80	73
Amortized Cost Basis by Origination Year 2020	57	44
Amortized Cost Basis by Origination Year, Prior to 2019	841	947
Revolving Loans	3,425	3,315
Revolving Loans Converted to Term	156
Total loans	4,869	4,691
Home Equity [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024		119
Amortized Cost Basis by Origination Year 2023	700	318
Amortized Cost Basis by Origination Year 2022	217	16
Amortized Cost Basis by Origination Year 2021		68
Amortized Cost Basis by Origination Year 2020	14	76
Amortized Cost Basis by Origination Year, Prior to 2019	1,308	524
Revolving Loans	3
Revolving Loans Converted to Term	7	77
Total loans	2,249	1,198
Home Equity [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2023		213
Amortized Cost Basis by Origination Year 2022	222
Amortized Cost Basis by Origination Year 2021	177	737
Amortized Cost Basis by Origination Year 2020	657	230
Amortized Cost Basis by Origination Year, Prior to 2019	1,954	2,527
Revolving Loans Converted to Term	324	330
Total loans	3,334	4,037
Home Equity [Member] | Current-period gross charge-offs [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2023	20	139
Amortized Cost Basis by Origination Year 2022	62	57
Amortized Cost Basis by Origination Year 2021		29
Amortized Cost Basis by Origination Year 2020	35	79
Amortized Cost Basis by Origination Year, Prior to 2019	72	615
Revolving Loans	20	6
Revolving Loans Converted to Term	7
Total loans	216	925
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,754,933	6,565,448
Commercial Real Estate [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,852	4,416
Commercial Real Estate [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,226	3,627
Commercial Real Estate [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,859	10,594
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	34,392	277,790
Amortized Cost Basis by Origination Year 2023	278,392	430,634
Amortized Cost Basis by Origination Year 2022	394,217	445,356
Amortized Cost Basis by Origination Year 2021	435,317	185,480
Amortized Cost Basis by Origination Year 2020	182,605	86,412
Amortized Cost Basis by Origination Year, Prior to 2019	535,684	464,727
Revolving Loans Converted to Term	608,750	548,175
Total loans	2,469,357	2,438,574
Residential Real Estate [Member] | Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	34,392	277,790
Amortized Cost Basis by Origination Year 2023	278,392	429,835
Amortized Cost Basis by Origination Year 2022	393,426	445,322
Amortized Cost Basis by Origination Year 2021	435,283	185,139
Amortized Cost Basis by Origination Year 2020	182,098	86,149
Amortized Cost Basis by Origination Year, Prior to 2019	527,391	456,818
Revolving Loans Converted to Term	607,421	548,147
Total loans	2,458,403	2,429,200
Residential Real Estate [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2020	339
Amortized Cost Basis by Origination Year, Prior to 2019	2,728	1,572
Revolving Loans Converted to Term	93
Total loans	3,160	1,572
Residential Real Estate [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2021		341
Amortized Cost Basis by Origination Year, Prior to 2019	478	2,130
Total loans	478	2,471
Residential Real Estate [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2023		799
Amortized Cost Basis by Origination Year 2022	791	34
Amortized Cost Basis by Origination Year 2021	34
Amortized Cost Basis by Origination Year 2020	168	263
Amortized Cost Basis by Origination Year, Prior to 2019	5,087	4,207
Revolving Loans Converted to Term	1,236	28
Total loans	7,316	5,331
Residential Real Estate [Member] | Current-period gross charge-offs [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2020		5
Amortized Cost Basis by Origination Year, Prior to 2019	77	387
Revolving Loans Converted to Term	58
Total loans	135	392
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	19,105	85,480
Amortized Cost Basis by Origination Year 2023	77,189	60,006
Amortized Cost Basis by Origination Year 2022	54,114	22,853
Amortized Cost Basis by Origination Year 2021	20,016	13,707
Amortized Cost Basis by Origination Year 2020	11,288	11,134
Amortized Cost Basis by Origination Year, Prior to 2019	19,076	12,429
Revolving Loans	23,944	23,948
Revolving Loans Converted to Term		4
Total loans	224,732	229,561
Consumer [Member] | Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	19,019	84,526
Amortized Cost Basis by Origination Year 2023	76,043	57,661
Amortized Cost Basis by Origination Year 2022	52,536	21,592
Amortized Cost Basis by Origination Year 2021	19,109	13,189
Amortized Cost Basis by Origination Year 2020	10,962	10,958
Amortized Cost Basis by Origination Year, Prior to 2019	18,694	12,143
Revolving Loans	23,939	23,916
Revolving Loans Converted to Term		4
Total loans	220,302	223,989
Consumer [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	86	699
Amortized Cost Basis by Origination Year 2023	709	1,526
Amortized Cost Basis by Origination Year 2022	950	952
Amortized Cost Basis by Origination Year 2021	779	343
Amortized Cost Basis by Origination Year 2020	183	162
Amortized Cost Basis by Origination Year, Prior to 2019	193	119
Revolving Loans	5	32
Total loans	2,905	3,833
Consumer [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024		191
Amortized Cost Basis by Origination Year 2023	281	616
Amortized Cost Basis by Origination Year 2022	519	195
Amortized Cost Basis by Origination Year 2021	64	112
Amortized Cost Basis by Origination Year 2020	73	5
Amortized Cost Basis by Origination Year, Prior to 2019	82	59
Total loans	1,019	1,178
Consumer [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024		64
Amortized Cost Basis by Origination Year 2023	156	203
Amortized Cost Basis by Origination Year 2022	109	114
Amortized Cost Basis by Origination Year 2021	64	63
Amortized Cost Basis by Origination Year 2020	70	9
Amortized Cost Basis by Origination Year, Prior to 2019	107	108
Total loans	506	561
Consumer [Member] | Current-period gross charge-offs [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024		251
Amortized Cost Basis by Origination Year 2023	189	1,921
Amortized Cost Basis by Origination Year 2022	587	901
Amortized Cost Basis by Origination Year 2021	213	301
Amortized Cost Basis by Origination Year 2020	52	100
Amortized Cost Basis by Origination Year, Prior to 2019	57	247
Revolving Loans		4
Total loans	1,098	3,725
Commercial Real Estate - Land and Construction [Member] | Current-period gross charge-offs [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2023	813
Revolving Loans Converted to Term		222
Total loans	813	222
Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	24,606	290,954
Amortized Cost Basis by Origination Year 2023	331,586	349,549
Amortized Cost Basis by Origination Year 2022	379,849	145,043
Amortized Cost Basis by Origination Year 2021	152,158	54,172
Amortized Cost Basis by Origination Year 2020	24,478	48,655
Amortized Cost Basis by Origination Year, Prior to 2019	60,405	35,942
Revolving Loans	62,776	82,587
Revolving Loans Converted to Term	51,791	48,963
Total loans	1,087,649	1,055,865
Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	24,606	290,954
Amortized Cost Basis by Origination Year 2023	331,376	349,549
Amortized Cost Basis by Origination Year 2022	379,849	145,043
Amortized Cost Basis by Origination Year 2021	152,158	54,172
Amortized Cost Basis by Origination Year 2020	24,478	48,655
Amortized Cost Basis by Origination Year, Prior to 2019	60,384	35,917
Revolving Loans	62,496	82,288
Revolving Loans Converted to Term	49,628	46,781
Total loans	1,084,975	1,053,359
Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member] | Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year, Prior to 2019	14	16
Revolving Loans	280	299
Revolving Loans Converted to Term	2,163	2,182
Total loans	2,457	2,497
Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member] | Classified - substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2023	210
Amortized Cost Basis by Origination Year, Prior to 2019	7	9
Total loans	217	9
Commercial Real Estate - Improved Property [Member] | Current-period gross charge-offs [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2022		372
Amortized Cost Basis by Origination Year, Prior to 2019	58	1,505
Total loans	58	1,877
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	107,508	496,063
Amortized Cost Basis by Origination Year 2023	515,096	1,093,322
Amortized Cost Basis by Origination Year 2022	1,107,690	612,401
Amortized Cost Basis by Origination Year 2021	585,604	588,343
Amortized Cost Basis by Origination Year 2020	625,540	543,180
Amortized Cost Basis by Origination Year, Prior to 2019	2,266,323	1,787,604
Revolving Loans	117,275	105,840
Revolving Loans Converted to Term	342,248	282,830
Total loans	5,667,284	5,509,583
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,852	4,416
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,226	3,627
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,859	10,594
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	107,508	494,142
Amortized Cost Basis by Origination Year 2023	500,262	1,076,535
Amortized Cost Basis by Origination Year 2022	1,090,763	603,354
Amortized Cost Basis by Origination Year 2021	576,509	581,540
Amortized Cost Basis by Origination Year 2020	618,834	514,523
Amortized Cost Basis by Origination Year, Prior to 2019	2,165,451	1,706,804
Revolving Loans	115,578	103,467
Revolving Loans Converted to Term	316,758	257,029
Total loans	5,491,663	5,337,394
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member] | Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2023	12,928	16,270
Amortized Cost Basis by Origination Year 2022	11,434	8,630
Amortized Cost Basis by Origination Year 2021	8,319	4,387
Amortized Cost Basis by Origination Year 2020	4,380	5,185
Amortized Cost Basis by Origination Year, Prior to 2019	39,434	44,861
Revolving Loans	1,697	2,373
Revolving Loans Converted to Term	25,456	25,767
Total loans	103,648	107,473
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member] | Classified - substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024		1,921
Amortized Cost Basis by Origination Year 2023	1,906	517
Amortized Cost Basis by Origination Year 2022	5,493	417
Amortized Cost Basis by Origination Year 2021	776	2,416
Amortized Cost Basis by Origination Year 2020	2,326	23,472
Amortized Cost Basis by Origination Year, Prior to 2019	61,438	35,939
Revolving Loans Converted to Term	34	34
Total loans	71,973	64,716
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	60,297	239,554
Amortized Cost Basis by Origination Year 2023	218,694	235,503
Amortized Cost Basis by Origination Year 2022	228,484	140,482
Amortized Cost Basis by Origination Year 2021	136,143	80,591
Amortized Cost Basis by Origination Year 2020	70,478	47,418
Amortized Cost Basis by Origination Year, Prior to 2019	316,354	286,268
Revolving Loans	585,945	567,823
Revolving Loans Converted to Term	66,777	73,020
Total loans	1,683,172	1,670,659
Commercial and Industrial [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,440	640
Commercial and Industrial [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	633	1,255
Commercial and Industrial [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,942	4,779
Commercial and Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	60,297	238,427
Amortized Cost Basis by Origination Year 2023	217,013	234,520
Amortized Cost Basis by Origination Year 2022	226,435	136,998
Amortized Cost Basis by Origination Year 2021	135,148	78,836
Amortized Cost Basis by Origination Year 2020	68,852	39,259
Amortized Cost Basis by Origination Year, Prior to 2019	275,734	252,826
Revolving Loans	546,174	541,400
Revolving Loans Converted to Term	58,380	64,417
Total loans	1,588,033	1,586,683
Commercial and Industrial [Member] | Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024		1,094
Amortized Cost Basis by Origination Year 2023	1,276	834
Amortized Cost Basis by Origination Year 2022	1,174	3,169
Amortized Cost Basis by Origination Year 2021	254	1,490
Amortized Cost Basis by Origination Year 2020	1,387	7,334
Amortized Cost Basis by Origination Year, Prior to 2019	38,277	31,526
Revolving Loans	15,626	20,626
Revolving Loans Converted to Term	7,437	7,131
Total loans	65,431	73,204
Commercial and Industrial [Member] | Classified - substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024		33
Amortized Cost Basis by Origination Year 2023	405	149
Amortized Cost Basis by Origination Year 2022	875	315
Amortized Cost Basis by Origination Year 2021	741	265
Amortized Cost Basis by Origination Year 2020	239	825
Amortized Cost Basis by Origination Year, Prior to 2019	2,343	1,916
Revolving Loans	24,145	5,797
Revolving Loans Converted to Term	960	1,472
Total loans	29,708	10,772
Commercial and Industrial [Member] | Current-period gross charge-offs [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024		98
Amortized Cost Basis by Origination Year 2023	274	205
Amortized Cost Basis by Origination Year 2022	126	603
Amortized Cost Basis by Origination Year 2021		353
Amortized Cost Basis by Origination Year 2020	53	20
Amortized Cost Basis by Origination Year, Prior to 2019	325	463
Revolving Loans Converted to Term	4,032	541
Total loans	$ 4,810	$ 2,283

Loans and the Allowance for _18

Loans and the Allowance for Credit Losses - Summary of Other Real Estate Owned and Repossessed Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Receivables [Abstract]
Other real estate owned	$ 1,210	$ 1,207
Repossessed assets	264	290
Total other real estate owned and repossessed assets	$ 1,474	$ 1,497

Investments In Limited Partne_3

Investments In Limited Partnerships - Additional Information (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024 USD ($) Partnership	Mar. 31, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Schedule of Investments [Line Items]
Unfunded equity commitments in other liabilities	$ 15,234,373			$ 15,179,312
Partnerships losses and impairment	$ 1,200	$ 1,100
Number of limited partnerships held | Partnership	3
Net Income (Loss)	$ 35,693	42,341
Equity Method Investments [Member]
Schedule of Investments [Line Items]
Income tax credits and adjustments				3,800
Equity Method Investments [Member] | Forecast [Member]
Schedule of Investments [Line Items]
Income tax credits and adjustments			$ 4,400
Limited Liability Company [Member]
Schedule of Investments [Line Items]
Amount invested in partnerships	3,000			3,000
Limited Liability Company [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule of Investments [Line Items]
Partnership income (loss) under equity method	12	$ 11
Variable Interest Entity, Not Primary Beneficiary [Member]
Schedule of Investments [Line Items]
Unfunded equity commitments in other liabilities	11,400			13,900
Variable Interest Entity, Not Primary Beneficiary [Member] | Other Assets [Member]
Schedule of Investments [Line Items]
Amount invested in partnerships	$ 30,700			$ 31,900

Investments In Limited Partne_4

Investments In Limited Partnerships - Schedule Of Equity Commitments (Details) - Variable Interest Entity, Not Primary Beneficiary [Member] $ in Thousands	Mar. 31, 2024 USD ($)
Schedule of Investments [Line Items]
2024	$ 5,190
2025	2,944
2026	834
2027	819
2028	492
2029 and thereafter	1,141
Total	$ 11,420

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2024 USD ($) Derivative	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) Derivative
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Collateral posted with market value on liability positions with credit risk-related contingent features	$ 50,900,000		$ 26,000,000
Interest Rate Swaps and Caps [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of interest rate swaps | Derivative	247		236
Aggregate notional amount	$ 1,600,000,000		$ 1,600,000,000
Income (loss) on derivative instrument not designated hedges	$ 800,000	$ 1,800,000
Risk Participation in Agreements [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of interest rate swaps | Derivative	21		19
Aggregate notional amount	$ 223,500,000		$ 197,200,000
Risk Participation out Agreement [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of interest rate swaps | Derivative	5		5
Aggregate notional amount	$ 40,700,000		$ 40,900,000
Other Contract [Member] | Forward TBA Contracts [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate notional amount	$ 26,500,000		$ 27,000,000

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Summary of Fair Values of Derivative Instruments on Balance Sheets (Detail) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 78,269,000	$ 72,267,000
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets	Other Assets
Liability Derivatives	$ 78,315,000	$ 73,288,000
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities	Other Liabilities
Interest Rate Swaps and Caps [Member] | Loan Swaps [Member]
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	$ 1,611,918,000	$ 1,573,152,000
Asset Derivatives	78,211,000	72,183,000
Liability Derivatives	78,312,000	73,083,000
Interest Rate Lock Commitments [Member] | Other Contract [Member]
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	23,009,000	16,524,000
Asset Derivatives	58,000	84,000
Forward TBA Contracts [Member] | Other Contract [Member]
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	26,500,000	27,000,000
Liability Derivatives	$ 3,000	$ 205,000

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities - Summary of Effect of Derivative Instruments on Income Statement (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivatives, Fair Value [Line Items]
Total gain (loss) on derivative financial instruments	$ 820	$ (1,041)
Interest Rate Swaps and Caps [Member]
Derivatives, Fair Value [Line Items]
Total gain (loss) on derivative financial instruments	$ 798	$ (1,039)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Net Swap Fee and Valuation Income	Net Swap Fee and Valuation Income
Interest Rate Lock Commitments [Member]
Derivatives, Fair Value [Line Items]
Total gain (loss) on derivative financial instruments	$ (26)	$ 187
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Non Interest Income Derived From Mortgage Banking Activities	Non Interest Income Derived From Mortgage Banking Activities
Forward TBA Contracts [Member]
Derivatives, Fair Value [Line Items]
Total gain (loss) on derivative financial instruments	$ 48	$ (189)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Non Interest Income Derived From Mortgage Banking Activities	Non Interest Income Derived From Mortgage Banking Activities

Benefit Plans - Defined Benefit

Benefit Plans - Defined Benefit Pension Plan (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Retirement Benefits [Abstract]
Service cost – benefits earned during year	$ 330	$ 350
Interest cost on projected benefit obligation	1,603	1,554
Expected return on plan assets	$ (2,599)	$ (2,750)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Employee Benefits	Employee Benefits
Amortization of prior service cost	$ (9)	$ (9)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Employee Benefits	Employee Benefits
Amortization of net loss	$ 21	$ 223
Net periodic pension income	$ (654)	$ (632)

Benefit Plans - Additional Info

Benefit Plans - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Retirement Benefits [Abstract]
Service cost	$ 330,000	$ 350,000
Periodic pension income	1,000,000	$ 1,000,000
Minimum required pension plan contribution	2,600,000
Available credit balance	64,200,000
Expected voluntary contribution for the year 2024	$ 0

Fair Value Measurement - Schedu

Fair Value Measurement - Schedule of Fair Value of Assets and Liabilities Measured on Recurring and Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	$ 13,074	$ 12,320
Available-for-sale debt securities	2,119,272	2,194,329
Loans held for sale	12,472	16,354
Other real estate owned and repossessed assets	1,474	1,497
Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	13,074	12,320
Available-for-sale debt securities	2,119,272	2,194,329
Loans held for sale	12,472	16,354
Other assets - interest rate swaps	78,211	72,183
Total assets	2,223,029	2,295,186
Other liabilities - interest rate swaps	78,312	73,083
Total liabilities recurring fair value measurements	78,312	73,083
Nonrecurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans	18,289	18,273
Other real estate owned and repossessed assets	1,474	1,497
Total assets	19,763	19,770
U.S. Government Sponsored Entities and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	201,709	208,366
U.S. Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	201,709	208,366
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	1,572,619	1,629,684
Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	1,572,619	1,629,684
Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	259,847	268,307
Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	259,847	268,307
Obligations of States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	73,287	76,125
Obligations of States and Political Subdivisions [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	73,287	76,125
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	11,810	11,847
Corporate Debt Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	11,810	11,847
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	13,074	12,320
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	13,074	12,320
Total assets	13,074	12,320
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	2,118,129	2,193,162
Loans held for sale	12,472	16,354
Other assets - interest rate swaps	78,211	72,183
Other liabilities - interest rate swaps	78,312	73,083
Significant Other Observable Inputs (Level 2) [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	2,118,129	2,193,162
Loans held for sale	12,472	16,354
Other assets - interest rate swaps	78,211	72,183
Total assets	2,208,812	2,281,699
Other liabilities - interest rate swaps	78,312	73,083
Total liabilities recurring fair value measurements	78,312	73,083
Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	201,709	208,366
Significant Other Observable Inputs (Level 2) [Member] | Residential Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	1,572,619	1,629,684
Significant Other Observable Inputs (Level 2) [Member] | Commercial Mortgage-Backed Securities and Collateralized Mortgage Obligations of Government Sponsored Entities and Agencies [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	259,847	268,307
Significant Other Observable Inputs (Level 2) [Member] | Obligations of States and Political Subdivisions [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	72,144	74,958
Significant Other Observable Inputs (Level 2) [Member] | Corporate Debt Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	11,810	11,847
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	1,143	1,167
Significant Unobservable Inputs (Level 3) [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	1,143	1,167
Total assets	1,143	1,167
Significant Unobservable Inputs (Level 3) [Member] | Nonrecurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans	18,289	18,273
Other real estate owned and repossessed assets	1,474	1,497
Total assets	19,763	19,770
Significant Unobservable Inputs (Level 3) [Member] | Obligations of States and Political Subdivisions [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	$ 1,143	$ 1,167

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Fair value transfer amount	$ 0	$ 0

Fair Value Measurement - Sche_2

Fair Value Measurement - Schedule of Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Fair Value Inputs Asset Quantitative Information [Line Items]
Other real estate owned and repossessed assets	$ 1,474	$ 1,497
Fair Value, Measurements, Nonrecurring [Member]
Fair Value Inputs Asset Quantitative Information [Line Items]
Collateral dependent loans	18,289	18,273
Other real estate owned and repossessed assets	1,474	1,497
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Inputs Asset Quantitative Information [Line Items]
Collateral dependent loans	18,289	18,273
Other real estate owned and repossessed assets	$ 1,474	$ 1,497
Collateral dependent loans, Appraisal adjustments	0%	0%
Collateral dependent loans, Liquidation expenses	(8.00%)	(8.00%)
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Weighted Average [Member]
Fair Value Inputs Asset Quantitative Information [Line Items]
Collateral dependent loans, Appraisal adjustments	0%	0%
Collateral dependent loans, Liquidation expenses	(8.00%)	(8.00%)

Fair Value Measurement - Estima

Fair Value Measurement - Estimates Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financial Assets
Cash and due from banks	$ 509,669	$ 595,383
Equity securities	13,074	12,320
Available-for-sale debt securities	2,119,272	2,194,329
Net held-to-maturity debt securities	1,190,010	1,199,527
Loans held for sale	12,472	16,354
Accrued interest receivable	78,564	77,435
Financial Liabilities
Deposits	13,496,773	13,168,704
Federal Home Loan Bank borrowings	1,100,000	1,350,000
Other borrowings	72,935	105,893
Subordinated debt and junior subordinated debt	279,136	279,078
Accrued interest payable	15,929	11,121
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial Assets
Cash and due from banks	509,669	595,383
Equity securities	13,074	12,320
Accrued interest receivable	78,564	77,435
Financial Liabilities
Deposits	12,157,536	11,937,002
Other borrowings	68,622	103,057
Accrued interest payable	15,929	11,121
Significant Other Observable Inputs (Level 2) [Member]
Financial Assets
Available-for-sale debt securities	2,118,129	2,193,162
Net held-to-maturity debt securities	1,052,184	1,068,896
Loans held for sale	12,472	16,354
Other assets - interest rate derivatives	78,211	72,183
Financial Liabilities
Deposits	1,317,890	1,209,819
Federal Home Loan Bank borrowings	1,098,495	1,349,217
Subordinated debt and junior subordinated debt	230,188	240,898
Other liabilities - interest rate derivatives	78,312	73,083
Significant Unobservable Inputs (Level 3) [Member]
Financial Assets
Available-for-sale debt securities	1,143	1,167
Net held-to-maturity debt securities	260	263
Net loans	11,329,520	11,134,250
Carrying Amount [Member]
Financial Assets
Cash and due from banks	509,669	595,383
Equity securities	13,074	12,320
Available-for-sale debt securities	2,119,272	2,194,329
Net held-to-maturity debt securities	1,189,827	1,199,335
Net loans	11,743,977	11,507,786
Loans held for sale	12,472	16,354
Other assets - interest rate derivatives	78,211	72,183
Accrued interest receivable	78,564	77,435
Financial Liabilities
Deposits	13,496,773	13,168,704
Federal Home Loan Bank borrowings	1,100,000	1,350,000
Other borrowings	72,935	105,893
Subordinated debt and junior subordinated debt	279,136	279,078
Other liabilities - interest rate derivatives	78,312	73,083
Accrued interest payable	15,929	11,121
Fair Value Estimate [Member]
Financial Assets
Cash and due from banks	509,669	595,383
Equity securities	13,074	12,320
Available-for-sale debt securities	2,119,272	2,194,329
Net held-to-maturity debt securities	1,052,444	1,069,159
Net loans	11,329,520	11,134,250
Loans held for sale	12,472	16,354
Other assets - interest rate derivatives	78,211	72,183
Accrued interest receivable	78,564	77,435
Financial Liabilities
Deposits	13,475,426	13,146,821
Federal Home Loan Bank borrowings	1,098,495	1,349,217
Other borrowings	68,622	103,057
Subordinated debt and junior subordinated debt	230,188	240,898
Other liabilities - interest rate derivatives	78,312	73,083
Accrued interest payable	$ 15,929	$ 11,121

Revenue Recognition - Summary o

Revenue Recognition - Summary of Revenue Recognition (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Schedule Of Revenue Recognition [Line Items]
Total net securities brokerage revenue	$ 2,548	$ 2,576
Digital banking income	4,704	4,605
Net swap fee and valuation income	1,563	799
Mortgage banking income	693	426
Net gain on other real estate owned and other assets	154	232
Total Service Charges on Deposits [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	6,784	6,170
Trust Account fees [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	$ 6,099	5,605
Point of revenue recognition	Over time
WesMark Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	$ 1,983	1,889
Point of revenue recognition	Over time
Total Trust Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	$ 8,082	7,494
Commercial Banking Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	$ 1,188	609
Point of revenue recognition	Over time
Personal Service Charges [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	$ 5,596	5,561
Point of revenue recognition	At a point in time and over time
Annuity Commissions [Member]
Schedule Of Revenue Recognition [Line Items]
Total net securities brokerage revenue	$ 1,972	2,046
Point of revenue recognition	At a point in time
Equity And Debt Security Trades [Member]
Schedule Of Revenue Recognition [Line Items]
Total net securities brokerage revenue	$ 80
Point of revenue recognition	At a point in time
Managed Money [Member]
Schedule Of Revenue Recognition [Line Items]
Total net securities brokerage revenue	$ 254	283
Point of revenue recognition	Over time
Trail Commissions [Member]
Schedule Of Revenue Recognition [Line Items]
Total net securities brokerage revenue	$ 242	247
Point of revenue recognition	Over time
Payment Processing Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Payment Processing Fees	$ 829	$ 871
Point of revenue recognition	At a point in time and over time
Digital Banking Income [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition	At a point in time
Net Swap Fee and Valuation Income [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition	At a point in time
Mortgage [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition	At a point in time
Other Real Estate Owned and Other Assets [Member]
Schedule Of Revenue Recognition [Line Items]
Point of revenue recognition	At a point in time and over time

Revenue Recognition - Summary_2

Revenue Recognition - Summary of Revenue Recognition (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net Swap Fee and Valuation Income [Member]
Schedule Of Revenue Recognition [Line Items]
Gain (loss) on change in fair value of underlying swaps not within the scope of ASC 606	$ 0.8	$ (1)

Comprehensive Income_(Loss) - C

Comprehensive Income/(Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 2,533,062	$ 2,426,662
Amounts reclassified from accumulated other comprehensive income/(loss)	(111)	189
Total other comprehensive (loss) income	(8,229)	28,017
Ending Balance	2,538,362	2,475,457
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	6,515	(535)
Other comprehensive income/(loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income/(loss)	(52)	75
Total other comprehensive (loss) income	(52)	75
Ending Balance	6,463	(460)
Accumulated Unrealized Gains (Losses) on Debt Securities Available for Sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(233,208)	(261,881)
Other comprehensive income/(loss) before reclassifications	(8,118)	27,828
Amounts reclassified from accumulated other comprehensive income/(loss)	(59)	114
Total other comprehensive (loss) income	(8,177)	27,942
Ending Balance	(241,385)	(233,939)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(226,693)	(262,416)
Other comprehensive income/(loss) before reclassifications	(8,118)	27,828
Amounts reclassified from accumulated other comprehensive income/(loss)	(111)	189
Total other comprehensive (loss) income	(8,229)	28,017
Ending Balance	$ (234,922)	$ (234,399)

Comprehensive Income_(Loss) -_2

Comprehensive Income/(Loss) - Components of Accumulated Other Comprehensive Income (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Percentage of Federal and State income tax rate	24%	24%

Comprehensive Income_(Loss) - S

Comprehensive Income/(Loss) - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income/(Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net securities losses (gains) reclassified into earnings	$ (537)	$ (145)
Provision for income taxes	7,697	9,942
Employee benefits (Non-interest expense)	12,184	12,060
Net effect on accumulated other comprehensive income/(loss) for the period	(111)	189
Accumulated Unrealized Gains (Losses) on Debt Securities Available for Sale [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net effect on accumulated other comprehensive income/(loss) for the period	(59)	114
Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net effect on accumulated other comprehensive income/(loss) for the period	(52)	75
Amounts Reclassified From Accumulated Other Comprehensive Income/(Loss) [Member] | Accumulated Unrealized Gains (Losses) on Debt Securities Available for Sale [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net securities losses (gains) reclassified into earnings	0	151
Provision for income taxes	(59)	(37)
Amounts Reclassified From Accumulated Other Comprehensive Income/(Loss) [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income taxes	49	(23)
Employee benefits (Non-interest expense)	$ (101)	$ 98

Comprehensive Income_(Loss) -_3

Comprehensive Income/(Loss) - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income/(Loss) (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Percentage of Federal and State income tax rate	24%	24%

Commitments and Contingent Li_3

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Allowance for credit losses associated with loan commitments	$ 8.2	$ 8.6
Liability associated with letters of credit	$ 0.2	$ 0.2

Commitments and Contingent Li_4

Commitments and Contingent Liabilities - Commitments to Extend Credit, Guarantees and Various Letters of Credit Outstanding (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Lines of credit	$ 3,991,363	$ 4,016,658
Loans approved but not closed	546,561	275,954
Overdraft limits	400,151	391,598
Letters of credit	41,812	38,929
Contingent obligations and other guarantees	$ 9,809	$ 15,037

Business Segments - Additional

Business Segments - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) Segment	Mar. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Operating segments | Segment	2
Trust and Investment Services [Member]
Segment Reporting Information [Line Items]
Market value of assets managed or held in custody by trust and investment services segment	$ 5,600	$ 5,000
Total non-fiduciary assets of the trust and investment services segment	3.3	3.3
Trust and Investment Services [Member] | Customer-Related Intangible Assets [Member]
Segment Reporting Information [Line Items]
Total non-fiduciary assets of the trust and investment services segment	$ 0.8	$ 1.1

Business Segments - Financial I

Business Segments - Financial Information by Business Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Interest and dividend income	$ 195,333	$ 160,555
Interest expense	81,367	36,223
NET INTEREST INCOME	113,966	124,332
Provision for credit losses	4,014	3,577
Net interest income after provision for credit losses	109,952	120,755
Non-interest income	30,629	27,653
Non-interest expense	97,191	96,125
Income before provision for income taxes	43,390	52,283
Provision for income taxes	7,697	9,942
Net income	35,693	42,341
Preferred stock dividends	2,531	2,531
Net income available to common shareholders	33,162	39,810
Community Banking [Member]
Segment Reporting Information [Line Items]
Interest and dividend income	195,333	160,555
Interest expense	81,367	36,223
NET INTEREST INCOME	113,966	124,332
Provision for credit losses	4,014	3,577
Net interest income after provision for credit losses	109,952	120,755
Non-interest income	22,547	20,159
Non-interest expense	91,968	91,617
Income before provision for income taxes	40,531	49,297
Provision for income taxes	7,097	9,315
Net income	33,434	39,982
Preferred stock dividends	2,531	2,531
Net income available to common shareholders	30,903	37,451
Trust and Investment Services [Member]
Segment Reporting Information [Line Items]
Non-interest income	8,082	7,494
Non-interest expense	5,223	4,508
Income before provision for income taxes	2,859	2,986
Provision for income taxes	600	627
Net income	2,259	2,359
Net income available to common shareholders	$ 2,259	$ 2,359