WesBanco (WSBC) 10-Q 31 Oct 24 2024 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2024	Oct. 24, 2024
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
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		66,872,229
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 [Member]
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	Sep. 30, 2024	Dec. 31, 2023
ASSETS
Cash and due from banks, including interest bearing amounts of $448,676 and $436,879, respectively	$ 620,897	$ 595,383
Securities:
Equity securities, at fair value	13,355	12,320
Available-for-sale debt securities, at fair value	2,228,527	2,194,329
Held-to-maturity debt securities (fair values of $1,052,781 and $1,069,159, respectively)	1,162,359	1,199,527
Allowance for credit losses, held-to-maturity debt securities	(148)	(192)
Net held-to-maturity debt securities	1,162,211	1,199,335
Total securities	3,404,093	3,405,984
Loans held for sale	22,127	16,354
Portfolio loans, net of unearned income	12,451,430	11,638,461
Allowance for credit losses - loans	(140,872)	(130,675)
Net portfolio loans	12,310,558	11,507,786
Premises and equipment, net	222,005	233,571
Accrued interest receivable	79,465	77,435
Goodwill and other intangible assets, net	1,126,050	1,132,267
Bank-owned life insurance	358,701	355,033
Other assets	370,273	388,561
Total Assets	18,514,169	17,712,374
Deposits:
Non-interest bearing demand	3,777,781	3,962,592
Interest bearing demand	3,667,082	3,463,443
Money market	2,347,444	2,017,713
Savings deposits	2,381,542	2,493,254
Certificates of deposit	1,663,494	1,231,702
Total deposits	13,837,343	13,168,704
Federal Home Loan Bank borrowings	1,175,000	1,350,000
Other short-term borrowings	140,641	105,893
Subordinated debt and junior subordinated debt	279,251	279,078
Total borrowings	1,594,892	1,734,971
Accrued interest payable	16,406	11,121
Other liabilities	263,943	264,516
Total Liabilities	15,712,584	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 September 30, 2024 and December 31, 2023, respectively	144,484	144,484
Common stock, $2.0833 par value; 100,000,000 shares authorized; 75,354,034 and 68,081,306 shares issued; 66,871,479 and 59,376,435 shares outstanding at September 30, 2024 and December 31, 2023, respectively	156,985	141,834
Capital surplus	1,808,272	1,635,859
Retained earnings	1,169,808	1,142,586
Treasury stock (8,482,555 and 8,704,871 shares - at cost, respectively)	(294,079)	(302,995)
Accumulated other comprehensive loss	(181,804)	(226,693)
Deferred benefits for directors	(2,081)	(2,013)
Total Shareholders' Equity	2,801,585	2,533,062
Total Liabilities and Shareholders' Equity	$ 18,514,169	$ 17,712,374

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Interest bearing deposits, banks	$ 448,676,000	$ 436,879,000
Held-to-maturity securities, fair values	$ 1,052,781,000	$ 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	75,354,034	68,081,306
Common stock, shares outstanding	66,871,479	59,376,435
Treasury stock, shares	8,482,555	8,704,871

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
INTEREST AND DIVIDEND INCOME
Loans, including fees	$ 184,215	$ 155,206	$ 526,550	$ 434,352
Interest and dividends on securities:
Taxable	17,651	18,082	51,984	55,651
Tax-exempt	4,498	4,679	13,640	14,191
Total interest and dividends on securities	22,149	22,761	65,624	69,842
Other interest income	7,365	5,622	19,881	16,004
Total interest and dividend income	213,729	183,589	612,055	520,198
INTEREST EXPENSE
Interest bearing demand deposits	28,139	20,873	80,654	49,181
Money market deposits	19,609	10,841	54,166	22,313
Savings deposits	8,246	6,699	23,796	16,559
Certificates of deposit	14,284	5,983	36,513	10,092
Total interest expense on deposits	70,278	44,396	195,129	98,145
Federal Home Loan Bank borrowings	17,147	16,463	50,374	44,477
Other short-term borrowings	1,092	745	2,662	1,654
Subordinated debt and junior subordinated debt	4,070	4,303	12,189	12,342
Total interest expense	92,587	65,907	260,354	156,618
NET INTEREST INCOME	121,142	117,682	351,701	363,580
Provision for credit losses	4,798	6,327	19,352	12,932
Net interest income after provision for credit losses	116,344	111,355	332,349	350,648
NON-INTEREST INCOME
Trust fees	7,517	6,705	22,902	21,116
Service charges on deposits	7,945	6,726	21,841	19,128
Digital banking income	5,084	4,949	14,828	14,564
Net swap fee and valuation (loss) income	(627)	3,845	2,712	7,257
Net securities brokerage revenue	2,659	2,394	7,808	7,492
Bank-owned life insurance	2,173	2,398	7,032	7,547
Mortgage banking income	1,280	975	3,042	2,002
Net securities gains (losses)	675	(337)	1,347	13
Net (loss) gain on other real estate owned and other assets	(239)	(28)	(51)	1,075
Other income	3,145	3,252	10,135	10,178
Total non-interest income	29,612	30,879	91,596	90,372
NON-INTEREST EXPENSE
Salaries and wages	44,890	45,351	131,879	131,774
Employee benefits	11,522	11,922	34,284	35,492
Net occupancy	6,226	6,146	19,158	18,921
Equipment and software	10,157	9,132	30,622	27,018
Marketing	2,977	3,115	7,233	8,203
FDIC insurance	3,604	3,125	10,576	8,880
Amortization of intangible assets	2,053	2,262	6,217	6,845
Restructuring and merger-related expense	1,977	641	5,755	3,830
Other operating expenses	17,777	16,245	55,044	49,535
Total non-interest expense	101,183	97,939	300,768	290,498
Income before provision for income taxes	44,773	44,295	123,177	150,522
Provision for income taxes	7,501	7,453	21,296	26,458
Net income	37,272	36,842	101,881	124,064
Preferred stock dividends	2,531	2,531	7,594	7,594
Net income available to common shareholders	$ 34,741	$ 34,311	$ 94,287	$ 116,470
EARNINGS PER COMMON SHARE
Basic	$ 0.54	$ 0.58	$ 1.54	$ 1.96
Diluted	$ 0.54	$ 0.58	$ 1.54	$ 1.96
AVERAGE COMMON SHARES OUTSTANDING
Basic	64,488,962	59,358,653	61,143,452	59,280,644
Diluted	64,634,208	59,443,366	61,272,602	59,386,429
DIVIDENDS DECLARED PER COMMON SHARE	$ 0.36	$ 0.35	$ 1.08	$ 1.05

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 37,272	$ 36,842	$ 101,881	$ 124,064
Debt securities available-for-sale:
Net change in unrealized gains (losses) on debt securities available-for-sale	70,448	(44,112)	59,336	(47,521)
Related income tax effect	(16,909)	10,705	(14,074)	11,632
Net securities losses reclassified into earnings	0	69	12	228
Related income tax effect	(58)	(17)	(178)	(55)
Net effect on other comprehensive income (loss) for the period	53,481	(33,355)	45,096	(35,716)
Defined benefit plans:
Amortization of net (gain) loss and prior service costs	(101)	100	(304)	298
Related income tax effect	24	(24)	97	(72)
Net effect on other comprehensive (loss) income for the period	(77)	76	(207)	226
Total other comprehensive income	53,404	(33,279)	44,889	(35,490)
Comprehensive income	$ 90,676	$ 3,563	$ 146,770	$ 88,574

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	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	124,064				124,064
Other comprehensive income (loss)	(35,490)						(35,490)
Comprehensive income	88,574
Common dividends declared	(61,729)				(61,729)
Preferred dividends declared	(7,594)				(7,594)
Issuance of common stock for dividend reinvestment					(819)	819
Issuance of common stock for dividend reinvestment, shares			22,455
Treasury shares acquired	(3,745)					(3,745)
Treasury shares acquired, shares			(162,432)
Stock options exercised	146			(60)		206
Stock options exercised, shares			6,432
Restricted stock granted				(8,260)		8,260
Restricted stock granted, shares			299,278
Stock compensation expense	5,806			5,806
Deferred benefits for directors- net	(179)			32				(211)
Ending Balance at Sep. 30, 2023	2,447,941	144,484	$ 141,834	1,633,395	1,131,597	(303,424)	(297,906)	(2,039)
Ending Balance, shares at Sep. 30, 2023			59,364,696
Beginning Balance at Jun. 30, 2023	2,464,998	144,484	$ 141,834	1,630,963	1,118,135	(303,770)	(264,627)	(2,021)
Beginning Balance, shares at Jun. 30, 2023			59,355,062
Net income	36,842				36,842
Other comprehensive income (loss)	(33,279)						(33,279)
Comprehensive income	3,563
Common dividends declared	(20,583)				(20,583)
Preferred dividends declared	(2,531)				(2,531)
Issuance of common stock for dividend reinvestment					(266)	266
Issuance of common stock for dividend reinvestment, shares			7,275
Stock options exercised	24			(14)		38
Stock options exercised, shares			941
Restricted stock granted				(42)		42
Restricted stock granted, shares			1,418
Stock compensation expense	2,472			2,472
Deferred benefits for directors- net	(2)			16				(18)
Ending Balance at Sep. 30, 2023	2,447,941	144,484	$ 141,834	1,633,395	1,131,597	(303,424)	(297,906)	(2,039)
Ending Balance, shares at Sep. 30, 2023			59,364,696
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	101,881				101,881
Other comprehensive income (loss)	44,889						44,889
Comprehensive income	146,770
Common dividends declared	(66,241)				(66,241)
Preferred dividends declared	(7,594)				(7,594)
Issuance of common stock, net of issuance costs	190,967		$ 15,151	175,816
Issuance of common stock, net of issuance costs, shares			7,272,728
Issuance of common stock for dividend reinvestment					(824)	824
Issuance of common stock for dividend reinvestment, shares			21,966
Treasury shares acquired	(1,447)					(1,447)
Treasury shares acquired, shares			(49,871)
Stock options exercised	456			(290)		746
Stock options exercised, shares			19,814
Restricted stock granted				(8,793)		8,793
Restricted stock granted, shares			230,407
Stock compensation expense	5,645			5,645
Deferred benefits for directors- net	(33)			35				(68)
Ending Balance at Sep. 30, 2024	2,801,585	144,484	$ 156,985	1,808,272	1,169,808	(294,079)	(181,804)	(2,081)
Ending Balance, shares at Sep. 30, 2024			66,871,479
Beginning Balance at Jun. 30, 2024	2,544,279	144,484	$ 141,834	1,630,830	1,159,217	(294,818)	(235,208)	(2,060)
Beginning Balance, shares at Jun. 30, 2024			59,579,310
Net income	37,272				37,272
Other comprehensive income (loss)	53,404						53,404
Comprehensive income	90,676
Common dividends declared	(23,849)				(23,849)
Preferred dividends declared	(2,531)				(2,531)
Issuance of common stock, net of issuance costs	190,967		$ 15,151	175,816
Issuance of common stock, net of issuance costs, shares			7,272,728
Issuance of common stock for dividend reinvestment					(301)	301
Issuance of common stock for dividend reinvestment, shares			7,908
Treasury shares acquired	(6)					(6)
Treasury shares acquired, shares			(142)
Stock options exercised	280			(164)		444
Stock options exercised, shares			11,675
Stock compensation expense	1,778			1,778
Deferred benefits for directors- net	(9)			12				(21)
Ending Balance at Sep. 30, 2024	$ 2,801,585	$ 144,484	$ 156,985	$ 1,808,272	$ 1,169,808	$ (294,079)	$ (181,804)	$ (2,081)
Ending Balance, shares at Sep. 30, 2024			66,871,479

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Stockholders' Equity [Abstract]
Common dividends declared, per share	$ 0.36	$ 0.35	$ 1.08	$ 1.05
Preferred dividends declared, per share	$ 16.875	$ 16.875	$ 16.875	$ 16.875

Consolidated Condensed Statemen

Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
OPERATING ACTIVITIES
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 143,573	$ 121,956
INVESTING ACTIVITIES
Net increase in loans held for investment	(817,803)	(612,293)
Available-for-sale debt securities:
Proceeds from sales	0	30,987
Proceeds from maturities, prepayments and calls	235,028	254,684
Purchases of securities	(213,403)	(4,500)
Held-to-maturity debt securities:
Proceeds from maturities, prepayments and calls	35,682	35,823
Proceeds from bank owned life insurance	3,363	2,946
Purchases of premises and equipment – net	(5,734)	(19,581)
Net cash used in investing activities	(762,867)	(311,934)
FINANCING ACTIVITIES
Increase (decrease) in deposits	668,796	(40,022)
Proceeds from Federal Home Loan Bank borrowings	1,175,000	1,380,000
Repayment of Federal Home Loan Bank borrowings	(1,350,000)	(960,000)
Increase (decrease) in other short-term borrowings	34,748	(28,376)
Principal repayments of finance lease obligations	(2,550)	(2,057)
Dividends paid to common shareholders	(63,568)	(61,703)
Dividends paid to preferred shareholders	(7,594)	(7,594)
Issuance of common stock, net of equity issuance costs	190,967
Treasury shares purchased - net	(991)	(3,599)
Net cash provided by financing activities	644,808	276,649
Net increase in cash, cash equivalents and restricted cash	25,514	86,671
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	620,897	495,082
SUPPLEMENTAL DISCLOSURES
Interest paid on deposits and other borrowings	255,053	149,960
Income taxes paid	23,735	33,785
Transfers of loans to other real estate owned	$ 152	$ 168

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 37,272	$ 36,842	$ 101,881	$ 124,064

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 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	9 Months Ended
	Sep. 30, 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 ("SEC"), 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 for both interim and annual periods 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, 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 . As this is not part of Wesbanco's current business activities, 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.

Mergers and Acquisitions

Mergers and Acquisitions	9 Months Ended
	Sep. 30, 2024
Business Combinations [Abstract]
Mergers and Acquisitions	NOTE 2. MERGERS AND ACQUISITIONS On July 25, 2024, Wesbanco, Inc., Wesbanco Bank, Inc., Premier Financial Corp. ("Premier") and Premier Bank jointly announced the execution of a definitive Agreement and Plan of Merger ("Agreement") providing for the merger of Premier with and into Wesbanco and the merger of Premier Bank with and into Wesbanco Bank. Premier is a bank holding company headquartered in Defiance, OH, with approximately $ 8.7 billion in assets, $ 6.6 billion in portfolio loans, $ 7.1 billion in deposits, $ 1.0 billion in stockholders’ equity and 73 branches as of September 30, 2024. Under the terms of the Agreement, Wesbanco will exchange its common stock for Premier common stock at closing, subject to customary conditions. Premier options will be exchanged for Wesbanco options, as adjusted as to exercise price and number of options to take into account the fixed exchange ratio stated in the Agreement. Premier shareholders will be entitled to receive 0.80 shares of Wesbanco common stock per each share of Premier common stock. The receipt by Premier shareholders of shares of Wesbanco common stock in exchange for their shares of Premier common stock is anticipated to qualify as a tax-free exchange. The merger remains subject to the approvals of the appropriate banking regulatory authorities and the shareholders of both companies. Wesbanco has filed an amended Form S-4 with the SEC regarding the proposed merger with Premier, which was effective on October 28, 2024. The special shareholders meetings of both companies are scheduled for December 11, 2024. It is currently expected that the transaction will be completed in the first quarter of 2025. For the nine months ended September 30, 2024, Wesbanco recorded merger-related expenses of $ 2.0 million related to the Premier acquisition.

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
Earnings Per Common Share	NOTE 3. EARNINGS PER COMMON SHARE Earnings per common share are calculated as follows: For the Three Months For the Nine Months (unaudited, in thousands, except shares and per share amounts) 2024 2023 2024 2023 Numerator for both basic and diluted earnings per common share: Net income available to common shareholders $ 34,741 $ 34,311 $ 94,287 $ 116,470 Denominator: Total average basic common shares outstanding 64,488,962 59,358,653 61,143,452 59,280,644 Effect of dilutive stock options and other stock compensation 145,246 84,713 129,150 105,785 Total diluted average common shares outstanding 64,634,208 59,443,366 61,272,602 59,386,429 Earnings per common share - basic $ 0.54 $ 0.58 $ 1.54 $ 1.96 Earnings per common share - diluted $ 0.54 $ 0.58 $ 1.54 $ 1.96 As of September 30, 2024 and 2023 , 472,401 and 596,642 options to purchase shares were not included in the diluted share computation for the three and nine months ended September 30, 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 September 30, 2024 , no shares were estimated to be awarded under the 2024, 2023 and 2022 total shareholder return ("TSR") plans and were not included in the diluted calculation as stock performance targets had not been met and the effect would be antidilutive. As of September 30, 2023 , no shares were estimated to be awarded under the 2023, 2022 and 2021 TSR plans, as stock performance targets had not been met as of such date and therefore the effect would be antidilutive. In addition, performance-based restricted stock ("PBRS") compensation totaling 87,992 and 70,568 shares were estimated to be awarded as of September 30, 2024 and September 30, 2023, respectively As previously disclosed in Form 8-K, in conjunction with the announcement of the pending acquisition of Premier, on August 1, 2024, Wesbanco issued 7,272,728 shares of common stock to complete a $ 200 million common equity capital raise. This equity issuance was primarily to support the pro-forma bank's balance sheet and regulatory capital ratios. These shares are included in average shares outstanding beginning on that date. For additional information relating to the pending Premier acquisition, refer to Note 2, “Mergers and Acquisitions.”

Securities

Securities	9 Months Ended
	Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Securities	NOTE 4. SECURITIES The following table presents the fair value and amortized cost of available-for-sale and held-to-maturity debt securities: September 30, 2024 December 31, 2023 (unaudited, in thousands) Amortized Gross Gross Fair Amortized Gross Gross Fair Available-for-sale debt securities U.S. Treasury $ 97,625 $ 47 $ ( 11 ) $ 97,661 $ — $ — $ — $ — U.S. Government sponsored entities and agencies 228,114 — ( 24,667 ) 203,447 238,676 — ( 30,310 ) 208,366 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 1,812,671 723 ( 218,349 ) 1,595,045 1,897,511 47 ( 267,874 ) 1,629,684 Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 252,434 53 ( 3,861 ) 248,626 274,220 11 ( 5,924 ) 268,307 Obligations of states and political subdivisions 73,921 128 ( 2,255 ) 71,794 78,819 167 ( 2,861 ) 76,125 Corporate debt securities 11,971 — ( 17 ) 11,954 11,962 — ( 115 ) 11,847 Total available-for-sale debt securities $ 2,476,736 $ 951 $ ( 249,160 ) $ 2,228,527 $ 2,501,188 $ 225 $ ( 307,084 ) $ 2,194,329 Held-to-maturity debt securities U.S. Government sponsored entities and agencies $ 3,239 $ — $ ( 233 ) $ 3,006 $ 3,587 $ — $ ( 313 ) $ 3,274 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 34,333 — ( 2,023 ) 32,310 38,893 — ( 3,017 ) 35,876 Obligations of states and political subdivisions 1,106,602 800 ( 107,987 ) 999,415 1,136,779 852 ( 127,518 ) 1,010,113 Corporate debt securities 18,185 — ( 135 ) 18,050 20,268 — ( 372 ) 19,896 Total held-to-maturity debt securities (1) $ 1,162,359 $ 800 $ ( 110,378 ) $ 1,052,781 $ 1,199,527 $ 852 $ ( 131,220 ) $ 1,069,159 Total debt securities $ 3,639,095 $ 1,751 $ ( 359,538 ) $ 3,281,308 $ 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 $ 0.1 million and $ 0.2 million at September 30, 2024 and December 31, 2023 , respectively. At September 30, 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 $ 10.7 million and $ 9.7 million at September 30, 2024 and December 31, 2023, respectively, 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 $ 13.4 million and $ 12.3 million at September 30, 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 September 30, 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 $ 129,485 $ 129,307 After 1 year through 5 years 213,579 209,064 After 5 years through 10 years 230,433 221,278 After 10 years 1,903,239 1,668,878 Total available-for-sale debt securities $ 2,476,736 $ 2,228,527 Held-to-maturity debt securities Within one year $ 24,983 $ 24,892 After 1 year through 5 years 117,995 117,231 After 5 years through 10 years 515,057 482,053 After 10 years 504,324 428,605 Total held-to-maturity debt securities $ 1,162,359 $ 1,052,781 Total debt securities $ 3,639,095 $ 3,281,308 Securities with an aggregate carrying value of $ 2.2 billion and $ 2.1 billion at September 30, 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 nine months ended September 30, 2023 totaled $ 31.0 million . There were no security sales that occurred in the nine months ended September 30, 2024. Net unrealized losses on available-for-sale securities included in accumulated other comprehensive income, net of tax, as of September 30, 2024 and December 31, 2023 were $ 188.1 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 and nine months ended September 30, 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 For the Nine Months (unaudited, in thousands) 2024 2023 2024 2023 Debt securities: Gross realized gains $ — $ — $ — $ 65 Gross realized losses ( 13 ) ( 80 ) ( 25 ) ( 286 ) Net losses on debt securities ( 13 ) ( 80 ) ( 25 ) ( 221 ) Equity securities: Net unrealized gains (losses) recognized on securities still held 688 ( 257 ) 1,372 234 Net securities gains (losses) $ 675 $ ( 337 ) $ 1,347 $ 13 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 $ 8.4 million and $ 8.8 million as of September 30, 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 nine months ended September 30, 2024 and 2023: Allowance for Credit Losses By Category For the Nine Months Ended September 30, 2024 and 2023 Obligations of states and Corporate political debt (unaudited, in thousands) subdivisions Securities Total Balance at December 31, 2023 $ 160 $ 32 $ 192 Current period provision (1) ( 34 ) ( 10 ) ( 44 ) Write-offs — — — Recoveries — — — Balance at September 30, 2024 $ 126 $ 22 $ 148 . Balance at December 31, 2022 $ 167 $ 53 $ 220 Current period provision (1) ( 22 ) ( 18 ) ( 40 ) Write-offs — — — Recoveries — — — Balance at September 30, 2023 $ 145 $ 35 $ 180 (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 5, "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 September 30, 2024 and December 31, 2023, respectively: September 30, 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. Treasury $ 24,097 $ ( 11 ) 1 $ — $ — — $ 24,097 $ ( 11 ) 1 U.S. Government sponsored entities and agencies — — — 203,447 ( 24,667 ) 44 203,447 ( 24,667 ) 44 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 39,742 ( 142 ) 7 1,500,358 ( 218,207 ) 454 1,540,100 ( 218,349 ) 461 Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 9,922 ( 27 ) 1 211,519 ( 3,834 ) 53 221,441 ( 3,861 ) 54 Obligations of states and political subdivisions — — — 52,313 ( 2,255 ) 90 52,313 ( 2,255 ) 90 Corporate debt securities 2,500 ( 1 ) 2 7,454 ( 16 ) 2 9,954 ( 17 ) 4 Total $ 76,261 $ ( 181 ) 11 $ 1,975,091 $ ( 248,979 ) 643 $ 2,051,352 $ ( 249,160 ) 654 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 $ 55.2 million and $ 62.0 million at September 30, 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	9 Months Ended
	Sep. 30, 2024
Receivables [Abstract]
Loans and the Allowance for Credit Losses	NOTE 5. 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 $ 11.3 million and $ 11.5 million at September 30, 2024 and December 31, 2023 , respectively. The unaccreted discount on purchased loans from acquisitions was $ 11.2 million at September 30, 2024 and $ 13.5 million at December 31, 2023. September 30, December 31, (unaudited, in thousands) 2024 2023 Commercial real estate: Land and construction $ 1,190,453 $ 1,055,865 Improved property 6,015,818 5,509,583 Total commercial real estate 7,206,271 6,565,448 Commercial and industrial 1,717,369 1,670,659 Residential real estate 2,519,089 2,438,574 Home equity 796,594 734,219 Consumer 212,107 229,561 Total portfolio loans 12,451,430 11,638,461 Loans held for sale 22,127 16,354 Total loans $ 12,473,557 $ 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") divided by the 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 September 30, 2024 , the primary drivers of the change in the allowance model calculation from December 31, 2023 were continued loan growth, adjustments in regional macroeconomic factors and loan concentrations, a specific reserve on one C&I credit and an increase in net charge-offs. 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 4.6 %, and subsequently increase to an average of 5.0 % over the remainder of the forecast period. In addition to the quantitative and qualitative changes noted above, the allowance is reflective of $ 9.6 million in net charge-offs recorded during the first nine months of 2024. Accrued interest receivable for loans was $ 64.3 million and $ 62.2 million at September 30, 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, due to their unique nature, Wesbanco does have a $ 0.3 million reserve on the accrued interest related to individually-evaluated loans. In addition, Wesbanco also has 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 $ 14.7 million and $ 15.6 million at September 30, 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 Nine Months Ended September 30, 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 1,662 2,584 9,987 2,365 383 1,674 1,119 19,774 Provision for loan commitments ( 63 ) 16 ( 300 ) ( 27 ) ( 5 ) — — ( 379 ) Total provision for credit 1,599 2,600 9,687 2,338 378 1,674 1,119 19,395 Charge-offs ( 813 ) ( 929 ) ( 6,744 ) ( 284 ) ( 795 ) ( 3,270 ) ( 1,324 ) ( 14,159 ) Recoveries 256 583 1,485 198 557 1,166 337 4,582 Net (charge-offs) recoveries ( 557 ) ( 346 ) ( 5,259 ) ( 86 ) ( 238 ) ( 2,104 ) ( 987 ) ( 9,577 ) Balance at September 30, 2024 Allowance for credit 8,228 61,589 41,372 23,497 1,162 3,526 1,498 140,872 Allowance for credit 6,831 16 129 1,249 — — — 8,225 Total ending allowance for credit $ 15,059 $ 61,605 $ 41,501 $ 24,746 $ 1,162 $ 3,526 $ 1,498 $ 149,097 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 ( 614 ) 7,595 3,678 1,582 ( 2,901 ) 1,315 957 11,612 Provision for loan commitments 1,247 — 1,087 ( 863 ) ( 110 ) — — 1,361 Total provision for credit 633 7,595 4,765 719 ( 3,011 ) 1,315 957 12,973 Charge-offs ( 222 ) ( 1,450 ) ( 1,498 ) ( 278 ) ( 670 ) ( 2,604 ) ( 1,262 ) ( 7,984 ) Recoveries 207 821 996 929 331 1,604 309 5,197 Net (charge-offs) recoveries ( 15 ) ( 629 ) ( 502 ) 651 ( 339 ) ( 1,000 ) ( 953 ) ( 2,787 ) Balance at September 30, 2023 Allowance for credit 6,108 59,625 34,716 20,441 994 3,442 1,289 126,615 Allowance for credit 7,272 — 1,087 1,352 18 — — 9,729 Total ending allowance for credit $ 13,380 $ 59,625 $ 35,803 $ 21,793 $ 1,012 $ 3,442 $ 1,289 $ 136,344 (1) Deposit overdrafts of $ 4.6 million and $ 4.5 million are included in total portfolio loans for the periods ending September 30, 2024 and September 30, 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 4, "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 September 30, 2024 Allowance for credit losses: Loans individually-evaluated $ — $ 5,652 $ 2,286 $ — $ — $ — $ — $ 7,938 Loans collectively-evaluated 8,228 55,937 39,086 23,497 1,162 3,526 1,498 132,934 Loan commitments (2) 6,831 16 129 1,249 — — — 8,225 Total allowance for credit $ 15,059 $ 61,605 $ 41,501 $ 24,746 $ 1,162 $ 3,526 $ 1,498 $ 149,097 Portfolio loans: Individually-evaluated for credit $ — $ 36,199 $ 2,286 $ — $ — $ — $ — $ 38,485 Collectively-evaluated for credit 1,190,453 5,979,619 1,715,083 2,519,089 796,594 212,107 — 12,412,945 Total portfolio loans $ 1,190,453 $ 6,015,818 $ 1,717,369 $ 2,519,089 $ 796,594 $ 212,107 $ — $ 12,451,430 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 $ 4.6 million and $ 4.7 million are included in total portfolio loans for the periods ending September 30, 2024 and December 31, 2023, respectively. (2) For additional detail relating to loan commitments, see Note 13, "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 September 30, 2024 Pass $ 1,186,387 $ 5,814,936 $ 1,628,592 $ 8,629,915 Criticized - compromised 3,575 115,117 81,848 200,540 Classified - substandard 491 85,765 6,929 93,185 Classified - doubtful — — — — Total $ 1,190,453 $ 6,015,818 $ 1,717,369 $ 8,923,640 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 $ 23.2 million at September 30, 2024 and $ 20.0 million at December 31, 2023 , of which $ 6.2 million and $ 4.6 million were accruing, for each period, respectively. These loans are not included in the tables above. In addition, $ 41.9 million and $ 21.2 million of unfunded commercial loan commitments are also not included in the tables above at September 30, 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 September 30, 2024 Commercial real estate: Land and construction $ 1,190,453 $ — $ — $ — $ — $ 1,190,453 $ — Improved property 5,987,360 6,053 4,759 17,646 28,458 6,015,818 8,848 Total commercial real estate 7,177,813 6,053 4,759 17,646 28,458 7,206,271 8,848 Commercial and industrial 1,700,854 2,483 6,997 7,035 16,515 1,717,369 5,339 Residential real estate 2,505,489 1,471 3,158 8,971 13,600 2,519,089 4,489 Home equity 784,848 6,036 1,239 4,471 11,746 796,594 1,263 Consumer 207,072 3,153 1,319 563 5,035 212,107 488 Total portfolio loans 12,376,076 19,196 17,472 38,686 75,354 12,451,430 20,427 Loans held for sale 22,127 — — — — 22,127 — Total loans $ 12,398,203 $ 19,196 $ 17,472 $ 38,686 $ 75,354 $ 12,473,557 $ 20,427 Nonperforming loans included above are as follows: Non-accrual loans $ 9,256 $ 1,901 $ 1,005 $ 18,259 $ 21,165 $ 30,421 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 September 30, 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 $ — $ — $ — $ — $ — $ — Improved property 12,721 11,227 — 11,248 9,557 — Commercial and industrial 2,899 2,271 — 2,492 1,841 — Residential real estate 15,885 11,274 — 15,128 10,582 — Home equity 7,576 5,531 — 6,521 4,777 — Consumer 192 118 — 104 51 — Total nonperforming loans without a specific allowance 39,273 30,421 — 35,493 26,808 — Total nonperforming loans with a specific allowance — — — — — — Total nonperforming loans $ 39,273 $ 30,421 $ — $ 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 For the Nine Months Ended September 30, 2024 September 30, 2023 September 30, 2024 September 30, 2023 Average Interest Average Interest Average Interest Average Interest Recorded Income Recorded Income Recorded Income Recorded Income (unaudited, in thousands) Investment Recognized Investment Recognized Investment Recognized Investment Recognized With no related specific allowance recorded: Commercial real estate: Land and construction $ 92 $ — $ — $ — $ 99 $ — $ 28 $ — Improved property 13,992 — 11,243 — 12,766 — 14,322 — Commercial and industrial 2,165 — 2,244 — 2,234 — 2,702 — Residential real estate 11,140 — 11,832 — 11,135 — 13,139 — Home equity 5,466 — 5,292 — 5,095 — 5,205 — Consumer 91 — 107 — 77 — 121 — Total nonperforming loans without a specific allowance 32,945 — 30,717 — 31,406 — 35,517 — Total nonperforming loans with a specific allowance — — — — — — — — Total nonperforming loans $ 32,945 $ — $ 30,717 $ — $ 31,406 $ — $ 35,517 $ — The following table presents the recorded investment in non-accrual loans: Non-accrual Loans (1) September 30, December 31, (unaudited, in thousands) 2024 2023 Commercial real estate: Land and construction $ — $ — Improved property 11,227 9,557 Total commercial real estate 11,227 9,557 Commercial and industrial 2,271 1,841 Residential real estate 11,274 10,582 Home equity 5,531 4,777 Consumer 118 51 Total $ 30,421 $ 26,808 (1) At September 30, 2024 , there were four borrowers with a loan balance greater than $ 1.0 million, which totaled $ 8.2 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 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 and nine months ended September 30, 2024 and 2023 presented by loan category: For the Three Months Ended September 30, 2024 (unaudited, in thousands) Term Payment Total % of Commercial real estate - land and construction $ — $ — $ — — Commercial real estate - improved property 666 19,782 20,448 0.3 Commercial and industrial 1,204 250 1,454 0.1 Residential real estate — 1,273 1,273 0.1 Home equity — 638 638 0.1 Consumer — 182 182 0.1 Total $ 1,870 $ 22,125 $ 23,995 0.2 For the Three Months Ended September 30, 2023 (unaudited, in thousands) Term Payment Total Percent of Commercial real estate - land and construction $ — $ — $ — — Commercial real estate - improved property 159 — 159 — Commercial and industrial 136 43 179 — Residential real estate — 126 126 — Home equity — 258 258 — Consumer — 244 244 0.1 Total $ 295 $ 671 $ 966 — For the Nine Months Ended September 30, 2024 (unaudited, in thousands) Term Payment Total % of Commercial real estate - land and construction $ 5 $ — $ 5 — Commercial real estate - improved property 25,002 19,782 44,784 0.7 Commercial and industrial 1,622 250 1,872 0.1 Residential real estate — 1,990 1,990 0.1 Home equity — 1,023 1,023 0.1 Consumer — 345 345 0.2 Total $ 26,629 $ 23,390 $ 50,019 0.4 For the Nine Months Ended September 30, 2023 (unaudited, in thousands) Term Payment Total Percent of Commercial real estate - land and construction $ 173 $ — $ 173 — Commercial real estate - improved property 7,014 276 7,290 0.1 Commercial and industrial 9,276 43 9,319 0.6 Residential real estate — 226 226 — Home equity 8 936 944 0.1 Consumer — 505 505 0.2 Total $ 16,471 $ 1,986 $ 18,457 0.2 Unfunded loan commitments on modifications for borrowers experiencing financial difficulty ("MBEFDs") totaled $ 1.7 million for loans modified during the nine months ended September 30, 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 and nine months ended September 30, 2024 and 2023, presented by loan category: For the Three Months Ended For the Three Months Ended September 30, 2024 September 30, 2023 (unaudited, in thousands) Weighted-Average Weighted-Average Commercial real estate - land and construction — — Commercial real estate - improved property 7 3 Commercial and industrial 16 3 Residential real estate — — Home equity — — Consumer — — For the Nine Months Ended For the Nine Months Ended September 30, 2024 September 30, 2023 (unaudited, in thousands) Weighted-Average Weighted-Average Commercial real estate - land and construction 24 12 Commercial real estate - improved property 9 22 Commercial and industrial 22 9 Residential real estate — — Home equity — 120 Consumer — — The following table summarizes loans with MBEFDs which defaulted (defined as 90 days past due) within 12 months of the loan being modified during the three and nine months ended September 30, 2024 and 2023 . Modified loans, including those that have defaulted, are already included in the allowance for credit losses through the various methodologies used to estimate the allowance. As such, no modification to the allowance is recorded specifically due to a modified loan subsequently defaulting. For the Three Months Ended For the Three Months Ended September 30, 2024 September 30, 2023 (unaudited, in thousands) Term Payment Total Term Payment Total Commercial real estate - land and construction $ — $ — $ — $ — $ — $ — Commercial real estate - improved property — — — — — — Commercial and industrial 34 — 34 — — — Residential real estate — 137 137 — — — Home equity — 175 175 — — — Consumer — 36 36 — — — Total loans that subsequently defaulted $ 34 $ 348 $ 382 $ — $ — $ — For the Nine Months Ended For the Nine Months Ended September 30, 2024 September 30, 2023 (unaudited, in thousands) Term Payment Total Term Payment Total Commercial real estate - land and construction $ — $ — $ — $ — $ — $ — Commercial real estate - improved property — — — — — — Commercial and industrial 202 — 202 — — — Residential real estate — 276 276 — — — Home equity — 175 175 — — — Consumer — 69 69 — — — Total loans that subsequently defaulted $ 202 $ 520 $ 722 $ — $ — $ — The following table presents an aging analysis of portfolio loans by loan category that were modified during the twelve months prior to September 30, 2024 and September 30, 2023. September 30, 2024 (unaudited, in thousands) 30-59 Days 60-89 Days 90 Days Total Current Total Commercial real estate - land and construction $ — $ — $ — $ — $ 5 $ 5 Commercial real estate - improved property — 3,433 — 3,433 41,573 45,006 Commercial and industrial 250 — 34 284 1,587 1,871 Residential real estate — — 161 161 2,485 2,646 Home equity 64 — 309 373 924 1,297 Consumer 28 24 66 118 273 391 Total modified loans (1) $ 342 $ 3,457 $ 570 $ 4,369 $ 46,847 $ 51,216 September 30, 2023 (unaudited, in thousands) 30-59 Days 60-89 Days 90 Days Total Current Total Commercial real estate - land and construction $ — $ — $ — $ — $ 173 $ 173 Commercial real estate - improved property — 33 276 309 6,981 7,290 Commercial and industrial — 43 — 43 9,276 9,319 Residential real estate 67 — — 67 159 226 Home equity 46 24 101 171 773 944 Consumer 6 68 62 136 369 505 Total modified loans (1) $ 119 $ 168 $ 439 $ 726 $ 17,731 $ 18,457 (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 September 30, 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 $ 151,329 $ 395,639 $ 343,952 $ 92,995 $ 21,618 $ 53,644 $ 77,916 $ 49,294 $ 1,186,387 Criticized - compromised 1,436 — 1,115 — — 12 361 651 3,575 Classified - substandard — — — — — 6 — 485 491 Classified - doubtful — — — — — — — — — Total $ 152,765 $ 395,639 $ 345,067 $ 92,995 $ 21,618 $ 53,662 $ 78,277 $ 50,430 $ 1,190,453 Current-period gross charge-offs $ — $ 813 $ — $ — $ — $ — $ — $ — $ 813 Commercial real estate: improved property Risk rating: Pass $ 386,541 $ 573,034 $ 1,154,357 $ 578,734 $ 587,340 $ 1,979,742 $ 196,011 $ 359,177 $ 5,814,936 Criticized - compromised 3,666 18,354 13,654 10,324 3,750 34,578 1,209 29,582 115,117 Classified - substandard 19,782 1,848 5,666 407 2,313 55,075 621 53 85,765 Classified - doubtful — — — — — — — — — Total $ 409,989 $ 593,236 $ 1,173,677 $ 589,465 $ 593,403 $ 2,069,395 $ 197,841 $ 388,812 $ 6,015,818 Current-period gross charge-offs $ — $ — $ 75 $ — $ — $ 854 $ — $ — $ 929 Commercial and industrial Risk rating: Pass $ 190,160 $ 182,255 $ 208,230 $ 117,099 $ 51,255 $ 248,315 $ 579,330 $ 51,948 $ 1,628,592 Criticized - compromised 279 9,232 4,193 2,057 1,720 25,037 24,673 14,657 81,848 Classified - substandard 2,161 123 543 949 55 1,059 901 1,138 6,929 Classified - doubtful — — — — — — — — — Total $ 192,600 $ 191,610 $ 212,966 $ 120,105 $ 53,030 $ 274,411 $ 604,904 $ 67,743 $ 1,717,369 Current-period gross charge-offs $ 48 $ 567 $ 717 $ 228 $ 148 $ 407 $ 1 $ 4,628 $ 6,744 Residential real estate Loan delinquency: Current $ 155,617 $ 265,992 $ 363,598 $ 408,559 $ 172,607 $ 488,396 $ — $ 650,720 $ 2,505,489 30-59 days past due — — — — — 1,471 — — 1,471 60-89 days past due — 142 — — 205 2,811 — — 3,158 90 days or more past due — — 849 128 — 5,727 — 2,267 8,971 Total $ 155,617 $ 266,134 $ 364,447 $ 408,687 $ 172,812 $ 498,405 $ — $ 652,987 $ 2,519,089 Current-period gross charge-offs $ — $ — $ — $ — $ — $ 226 $ — $ 58 $ 284 Home equity Loan delinquency: Current $ 11,347 $ 1,432 $ 2,090 $ 976 $ 2,584 $ 20,996 $ 744,251 $ 1,172 $ 784,848 30-59 days past due — 289 780 15 32 1,299 3,621 — 6,036 60-89 days past due — 131 232 80 — 748 — 48 1,239 90 days or more past due — 818 551 228 337 2,066 185 286 4,471 Total $ 11,347 $ 2,670 $ 3,653 $ 1,299 $ 2,953 $ 25,109 $ 748,057 $ 1,506 $ 796,594 Current-period gross charge-offs $ — $ 316 $ 105 $ 65 $ 35 $ 197 $ 28 $ 49 $ 795 Consumer Loan delinquency: Current $ 44,653 $ 62,137 $ 42,197 $ 14,117 $ 7,233 $ 11,745 $ 24,990 $ — $ 207,072 30-59 days past due 361 1,070 907 474 174 124 43 — 3,153 60-89 days past due 296 429 326 129 37 102 — — 1,319 90 days or more past due 67 94 244 31 37 90 — — 563 Total $ 45,377 $ 63,730 $ 43,674 $ 14,751 $ 7,481 $ 12,061 $ 25,033 $ — $ 212,107 Current-period gross charge-offs $ 104 $ 1,193 $ 1,174 $ 411 $ 144 $ 244 $ — $ — $ 3,270 Loans As of December 31, 2023 Amortized Cost Basis by Origination Year (unaudited 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: September 30, December 31, (unaudited, in thousands) 2024 2023 Other real estate owned $ 670 $ 1,207 Repossessed assets 236 290 Total other real estate owned and repossessed assets $ 906 $ 1,497 There were no residential real estate loans included in other real estate at both September 30, 2024 and December 31, 2023. At September 30, 2024 and December 31, 2023 , formal foreclosure proceedings were in process on residential real estate loans totaling $ 3.1 million and $ 4.0 million, respectively.

Investments In Limited Partners

Investments In Limited Partnerships	9 Months Ended
	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Investments in Limited Partnerships	NOTE 6. 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 September 30, 2024 and December 31, 2023 , Wesbanco had $ 34.4 million and $ 31.9 million, respectively, invested in these partnerships. Wesbanco also recognizes the unconditional unfunded equity commitments of $ 15.2 million and $ 13.9 million at September 30, 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 September 30, 2024 and 2023 was $ 1.2 million and $ 1.1 million, respectively, and was $ 3.5 million and $ 3.2 million, respectively, for the nine months ended September 30, 2024 and 2023 . Tax benefits attributed to these partnerships include low-income housing and historic tax credits, which are projected to total $ 4.5 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 September 30, 2024. These provide seed money and capital to startup companies, and financing to low-income housing projects. As of September 30, 2024 and December 31, 2023 , Wesbanco had $ 2.9 million and $ 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 (loss) for the three months ended September 30, 2024 and 2023 of $ 5 thousand and ($ 23 ) thousand, respectively, and ($ 5 ) thousand and ($ 18 ) thousand, respectively, for the nine months ended September 30, 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 September 30, 2024 (unaudited, in thousands) : Year Amount 2024 $ 3,673 2025 5,085 2026 3,148 2027 950 2028 588 2029 and thereafter 1,726 Total $ 15,170

Derivatives and Hedging Activit

Derivatives and Hedging Activities	9 Months Ended
	Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	NOTE 7. 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 September 30, 2024 and December 31, 2023 , Wesbanco had 282 and 236 customer interest rate swaps and caps with an aggregate notional amount of $ 1.9 billion and $ 1.6 billion, respectively, related to this program. Wesbanco recognized income for the related swap and cap fees of $ 1.1 million and $ 2.5 million for the three months ended September 30, 2024 and 2023 , respectively, and $ 3.6 million and $ 6.8 million for the nine months ended September 30, 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 September 30, 2024 and December 31, 2023 , Wesbanco had 24 and 19 risk participation-in agreements with an aggregate notional amount of $ 230.6 million and $ 197.2 million, respectively. As of September 30, 2024 and December 31, 2023 , Wesbanco had eight and five risk participation-out agreements with an aggregate notional amount of $ 67.9 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 $ 41.5 million and $ 27.0 million at September 30, 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 September 30, 2024 and December 31, 2023: September 30, 2024 December 31, 2023 (unaudited, in thousands) Notional or Asset Liability Notional or Asset Liability Derivatives Loan Swaps: Interest rate swaps and caps $ 1,873,665 $ 66,910 $ 68,708 $ 1,573,152 $ 72,183 $ 73,083 Other contracts: Interest rate lock commitments 33,968 — 40 16,524 84 — Forward TBA contracts 41,500 — 160 27,000 — 205 Total derivatives $ 66,910 $ 68,908 $ 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 and nine months ended September 30, 2024 and 2023, respectively. For the Three Months For the Nine Months (unaudited, in thousands) Location of Gain/(Loss) 2024 2023 2024 2023 Interest rate swaps and caps Net swap fee and valuation (loss) income $ ( 1,702 ) $ 1,352 $ ( 895 ) $ 489 Interest rate lock commitments Mortgage banking income ( 8 ) 94 ( 124 ) ( 34 ) Forward TBA contracts Mortgage banking income ( 621 ) 422 ( 526 ) 870 Total $ ( 2,331 ) $ 1,868 $ ( 1,545 ) $ 1,325 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. Wesbanco has minimum collateral posting thresholds with certain of its derivative counterparties and has posted collateral with a market value of $ 8.6 million as of September 30, 2024. If Wesbanco had breached any of these provisions at September 30, 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. At December 31, 2023 , Wesbanco held net cash collateral from various derivative counterparties totaling $ 26.0 million within interest bearing deposit accounts.

Benefit Plans

Benefit Plans	9 Months Ended
	Sep. 30, 2024
Retirement Benefits [Abstract]
Benefit Plans	NOTE 8. 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 For the Nine Months (unaudited, in thousands) 2024 2023 2024 2023 Service cost – benefits earned during year $ 334 $ 357 $ 994 $ 1,061 Interest cost on projected benefit obligation 1,620 1,589 4,826 4,715 Expected return on plan assets ( 2,627 ) ( 2,811 ) ( 7,825 ) ( 8,342 ) Amortization of prior service cost ( 9 ) ( 9 ) ( 26 ) ( 27 ) Amortization of net loss 21 227 63 675 Net periodic pension income $ ( 661 ) $ ( 647 ) $ ( 1,968 ) $ ( 1,918 ) The service cost of $ 1.0 million and $ 1.1 million for the nine months ended September 30, 2024 and 2023 , respectively, is included in salaries and wages, and periodic pension income of $ 3.0 million for the nine months ended September 30, 2024 and 2023, 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	9 Months Ended
	Sep. 30, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurement	NOTE 9. 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 September 30, 2024 and December 31, 2023: September 30, 2024 Fair Value Measurements Using: September 30, Quoted Prices in Significant Significant (unaudited, in thousands) 2024 (level 1) (level 2) (level 3) Recurring fair value measurements Equity securities $ 13,355 $ 13,355 $ — $ — Available-for-sale debt securities U.S. Treasury 97,661 97,661 — — U.S. Government sponsored entities and agencies 203,447 — 203,447 — Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 1,595,045 — 1,595,045 — Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 248,626 — 248,626 — Obligations of states and political subdivisions 71,794 — 70,674 1,120 Corporate debt securities 11,954 — 11,954 — Total available-for-sale debt securities $ 2,228,527 $ 97,661 $ 2,129,746 $ 1,120 Loans held for sale 22,127 — 22,127 — Other assets - interest rate swaps 66,910 — 66,910 — Total assets recurring fair value measurements $ 2,330,919 $ 111,016 $ 2,218,783 $ 1,120 Other liabilities - interest rate swaps $ 68,708 $ — $ 68,708 $ — Total liabilities recurring fair value measurements $ 68,708 $ — $ 68,708 $ — Nonrecurring fair value measurements Collateral dependent loans $ 21,259 $ — $ — $ 21,259 Other real estate owned and repossessed assets 906 — — 906 Total nonrecurring fair value measurements $ 22,165 $ — $ — $ 22,165 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 and nine months ended September 30, 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) September 30, 2024 Collateral dependent loans $ 21,259 Appraisal of collateral (1) Appraisal adjustments (2) ( 0.0 %)/( 0.0 %) Liquidation expenses (2) ( 7.5 %)% to ( 8.0 %)/( 7.9 %) Other real estate owned and repossessed assets $ 906 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 September 30, 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 $ 620,897 $ 620,897 $ 620,897 $ — $ — Equity securities 13,355 13,355 13,355 — — Available-for-sale debt securities 2,228,527 2,228,527 97,661 2,129,746 1,120 Net held-to-maturity debt securities 1,162,211 1,052,781 — 1,052,549 232 Net loans 12,310,558 12,018,968 — — 12,018,968 Loans held for sale 22,127 22,127 — 22,127 — Other assets - interest rate derivatives 66,910 66,910 — 66,910 — Accrued interest receivable 79,465 79,465 79,465 — — Financial Liabilities Deposits 13,837,343 13,827,070 12,173,849 1,653,221 — Federal Home Loan Bank borrowings 1,175,000 1,176,840 — 1,176,840 — Other borrowings 140,641 140,492 140,492 — — Subordinated debt and junior subordinated debt 279,251 232,112 — 232,112 — Other liabilities - interest rate derivatives 68,708 68,708 — 68,708 — Accrued interest payable 16,406 16,406 16,406 — — 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. The carrying value is net of the allowance for credit losses on held-to-maturity debt securities. 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	9 Months Ended
	Sep. 30, 2024
Revenue Recognition [Abstract]
Revenue Recognition	NOTE 10. 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 and nine months ended September 30, 2024 and 2023, respectively: Point of Revenue For the Three Months For the Nine Months (unaudited, in thousands) Recognition 2024 2023 2024 2023 Revenue Streams Trust fees Trust account fees Over time $ 5,467 $ 4,751 $ 16,854 $ 15,365 WesMark fees Over time 2,050 1,954 6,048 5,751 Total trust fees 7,517 6,705 22,902 21,116 Service charges on deposits Commercial banking fees Over time 1,358 756 3,844 2,015 Personal service charges At a point in time and over time 6,587 5,970 17,997 17,113 Total service charges on deposits 7,945 6,726 21,841 19,128 Net securities brokerage revenue Annuity commissions At a point in time 2,008 1,804 5,958 5,689 Equity and debt security trades At a point in time 81 54 231 203 Managed money Over time 298 275 824 842 Trail commissions Over time 272 261 795 758 Total net securities brokerage revenue 2,659 2,394 7,808 7,492 Payment processing fees (1) At a point in time and over time 925 939 2,659 2,761 Digital banking income At a point in time 5,084 4,949 14,828 14,564 Net swap fee and valuation (loss) income (2) At a point in time ( 627 ) 3,845 2,712 7,257 Mortgage banking income At a point in time 1,280 975 3,042 2,002 Net (loss) gain on other real estate owned and other assets At a point in time and over time ( 239 ) ( 28 ) ( 51 ) 1,075 (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 (losses) gains of $( 1.7 ) million and $ 1.4 million for the three months ended September 30, 2024 and 2023, respectively, and (losses) gains of $( 0.9 ) million and $ 0.5 million for the nine months ended September 30, 2024 and 2023, respectively.

Comprehensive Income_(Loss)

Comprehensive Income/(Loss)	9 Months Ended
	Sep. 30, 2024
Equity [Abstract]
Comprehensive Income/(Loss)	NOTE 11. COMPREHENSIVE INCOME/(LOSS) The activity in accumulated other comprehensive income/(loss) for the nine months ended September 30, 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 income before reclassifications — 45,262 45,262 Amounts reclassified from accumulated other comprehensive loss ( 207 ) ( 166 ) ( 373 ) Period change ( 207 ) 45,096 44,889 Balance at September 30, 2024 $ 6,308 $ ( 188,112 ) $ ( 181,804 ) Balance at December 31, 2022 $ ( 535 ) $ ( 261,881 ) $ ( 262,416 ) Other comprehensive loss before reclassifications — ( 35,889 ) ( 35,889 ) Amounts reclassified from accumulated other comprehensive income 226 173 399 Period change 226 ( 35,716 ) ( 35,490 ) Balance at September 30, 2023 $ ( 309 ) $ ( 297,597 ) $ ( 297,906 ) (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 and nine months ended September 30, 2024 and 2023: Details about Accumulated Other Comprehensive For the Three Months For the Nine Months Affected Line Item in the Statement (unaudited, in thousands) 2024 2023 2024 2023 Debt securities available-for-sale (1) : Net securities losses reclassified into earnings $ — $ 69 $ 12 $ 228 Net securities gains/(losses) (Non-interest income) Related income tax effect ⁽²⁾ ( 58 ) ( 17 ) ( 178 ) ( 55 ) Provision for income taxes Net effect on accumulated other comprehensive ( 58 ) 52 ( 166 ) 173 Defined benefit plans (3) : Amortization of net (gain) loss and prior service costs ( 101 ) 100 ( 304 ) 298 Employee benefits (Non-interest expense) Related income tax effect ⁽²⁾ 24 ( 24 ) 97 ( 72 ) Provision for income taxes Net effect on accumulated other comprehensive ( 77 ) 76 ( 207 ) 226 Total reclassifications for the period $ ( 135 ) $ 128 $ ( 373 ) $ 399 (1) For additional detail related to unrealized gains on securities and related amounts reclassified from accumulated other comprehensive income, see Note 4, “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 8, “Benefit Plans” for additional detail.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	9 Months Ended
	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	NOTE 12. 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 September 30, 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 September 30, 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: September 30, December 31, (unaudited, in thousands) 2024 2023 Lines of credit $ 4,166,960 $ 4,016,658 Loans approved but not closed 289,531 275,954 Overdraft limits 396,953 391,598 Letters of credit 45,624 38,929 Contingent obligations and other guarantees 22,577 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	9 Months Ended
	Sep. 30, 2024
Segment Reporting [Abstract]
Business Segments	NOTE 13. 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 $ 6.1 billion and $ 5.0 billion at September 30, 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 September 30, 2024 Interest and dividend income $ 213,729 $ — $ 213,729 Interest expense 92,587 — 92,587 Net interest income 121,142 — 121,142 Provision for credit losses 4,798 — 4,798 Net interest income after provision for credit losses 116,344 — 116,344 Non-interest income 22,095 7,517 29,612 Non-interest expense 96,090 5,093 101,183 Income before provision for income taxes 42,349 2,424 44,773 Provision for income taxes 6,992 509 7,501 Net income 35,357 1,915 37,272 Preferred stock dividends 2,531 — 2,531 Net income available to common shareholders $ 32,826 $ 1,915 $ 34,741 For The Three Months Ended September 30, 2023 Interest and dividend income $ 183,589 $ — $ 183,589 Interest expense 65,907 — 65,907 Net interest income 117,682 — 117,682 Provision for credit losses 6,327 — 6,327 Net interest income after provision for credit losses 111,355 — 111,355 Non-interest income 24,175 6,704 30,879 Non-interest expense 92,815 5,124 97,939 Income before provision for income taxes 42,715 1,580 44,295 Provision for income taxes 7,121 332 7,453 Net income 35,594 1,248 36,842 Preferred stock dividends 2,531 — 2,531 Net income available to common shareholders $ 33,063 $ 1,248 $ 34,311 For the Nine Months Ended September 30, 2024 Interest and dividend income $ 612,055 $ — $ 612,055 Interest expense 260,354 — 260,354 Net interest income 351,701 — 351,701 Provision for credit losses 19,352 — 19,352 Net interest income after provision for credit losses 332,349 — 332,349 Non-interest income 68,694 22,902 91,596 Non-interest expense 285,463 15,305 300,768 Income before provision for income taxes 115,580 7,597 123,177 Provision for income taxes 19,701 1,595 21,296 Net income 95,879 6,002 101,881 Preferred stock dividends 7,594 — 7,594 Net income available to common shareholders $ 88,285 $ 6,002 $ 94,287 For the Nine Months Ended September 30, 2023 Interest and dividend income $ 520,198 $ — $ 520,198 Interest expense 156,618 — 156,618 Net interest income 363,580 — 363,580 Provision for credit losses 12,932 — 12,932 Net interest income after provision for credit losses 350,648 — 350,648 Non-interest income 69,256 21,116 90,372 Non-interest expense 276,247 14,251 290,498 Income before provision for income taxes 143,657 6,865 150,522 Provision for income taxes 25,016 1,442 26,458 Net income 118,641 5,423 124,064 Preferred stock dividends 7,594 — 7,594 Net income available to common shareholders $ 111,047 $ 5,423 $ 116,470 Total non-fiduciary assets of the trust and investment services segment were $ 3.6 million (including $ 0.8 million of trust customer intangibles) and $ 3.3 million (including $ 1.0 million of trust customer intangibles) at September 30, 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)	9 Months Ended
	Sep. 30, 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 ("SEC"), 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 for both interim and annual periods 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, 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 . As this is not part of Wesbanco's current business activities, 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)	9 Months Ended
	Sep. 30, 2024
Earnings Per Share [Abstract]
Summary of Earnings Per Common Share	Earnings per common share are calculated as follows: For the Three Months For the Nine Months (unaudited, in thousands, except shares and per share amounts) 2024 2023 2024 2023 Numerator for both basic and diluted earnings per common share: Net income available to common shareholders $ 34,741 $ 34,311 $ 94,287 $ 116,470 Denominator: Total average basic common shares outstanding 64,488,962 59,358,653 61,143,452 59,280,644 Effect of dilutive stock options and other stock compensation 145,246 84,713 129,150 105,785 Total diluted average common shares outstanding 64,634,208 59,443,366 61,272,602 59,386,429 Earnings per common share - basic $ 0.54 $ 0.58 $ 1.54 $ 1.96 Earnings per common share - diluted $ 0.54 $ 0.58 $ 1.54 $ 1.96

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 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: September 30, 2024 December 31, 2023 (unaudited, in thousands) Amortized Gross Gross Fair Amortized Gross Gross Fair Available-for-sale debt securities U.S. Treasury $ 97,625 $ 47 $ ( 11 ) $ 97,661 $ — $ — $ — $ — U.S. Government sponsored entities and agencies 228,114 — ( 24,667 ) 203,447 238,676 — ( 30,310 ) 208,366 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 1,812,671 723 ( 218,349 ) 1,595,045 1,897,511 47 ( 267,874 ) 1,629,684 Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 252,434 53 ( 3,861 ) 248,626 274,220 11 ( 5,924 ) 268,307 Obligations of states and political subdivisions 73,921 128 ( 2,255 ) 71,794 78,819 167 ( 2,861 ) 76,125 Corporate debt securities 11,971 — ( 17 ) 11,954 11,962 — ( 115 ) 11,847 Total available-for-sale debt securities $ 2,476,736 $ 951 $ ( 249,160 ) $ 2,228,527 $ 2,501,188 $ 225 $ ( 307,084 ) $ 2,194,329 Held-to-maturity debt securities U.S. Government sponsored entities and agencies $ 3,239 $ — $ ( 233 ) $ 3,006 $ 3,587 $ — $ ( 313 ) $ 3,274 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 34,333 — ( 2,023 ) 32,310 38,893 — ( 3,017 ) 35,876 Obligations of states and political subdivisions 1,106,602 800 ( 107,987 ) 999,415 1,136,779 852 ( 127,518 ) 1,010,113 Corporate debt securities 18,185 — ( 135 ) 18,050 20,268 — ( 372 ) 19,896 Total held-to-maturity debt securities (1) $ 1,162,359 $ 800 $ ( 110,378 ) $ 1,052,781 $ 1,199,527 $ 852 $ ( 131,220 ) $ 1,069,159 Total debt securities $ 3,639,095 $ 1,751 $ ( 359,538 ) $ 3,281,308 $ 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 $ 0.1 million and $ 0.2 million at September 30, 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 September 30, 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 $ 129,485 $ 129,307 After 1 year through 5 years 213,579 209,064 After 5 years through 10 years 230,433 221,278 After 10 years 1,903,239 1,668,878 Total available-for-sale debt securities $ 2,476,736 $ 2,228,527 Held-to-maturity debt securities Within one year $ 24,983 $ 24,892 After 1 year through 5 years 117,995 117,231 After 5 years through 10 years 515,057 482,053 After 10 years 504,324 428,605 Total held-to-maturity debt securities $ 1,162,359 $ 1,052,781 Total debt securities $ 3,639,095 $ 3,281,308
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 and nine months ended September 30, 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 For the Nine Months (unaudited, in thousands) 2024 2023 2024 2023 Debt securities: Gross realized gains $ — $ — $ — $ 65 Gross realized losses ( 13 ) ( 80 ) ( 25 ) ( 286 ) Net losses on debt securities ( 13 ) ( 80 ) ( 25 ) ( 221 ) Equity securities: Net unrealized gains (losses) recognized on securities still held 688 ( 257 ) 1,372 234 Net securities gains (losses) $ 675 $ ( 337 ) $ 1,347 $ 13
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 nine months ended September 30, 2024 and 2023: Allowance for Credit Losses By Category For the Nine Months Ended September 30, 2024 and 2023 Obligations of states and Corporate political debt (unaudited, in thousands) subdivisions Securities Total Balance at December 31, 2023 $ 160 $ 32 $ 192 Current period provision (1) ( 34 ) ( 10 ) ( 44 ) Write-offs — — — Recoveries — — — Balance at September 30, 2024 $ 126 $ 22 $ 148 . Balance at December 31, 2022 $ 167 $ 53 $ 220 Current period provision (1) ( 22 ) ( 18 ) ( 40 ) Write-offs — — — Recoveries — — — Balance at September 30, 2023 $ 145 $ 35 $ 180 (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 5, "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 September 30, 2024 and December 31, 2023, respectively: September 30, 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. Treasury $ 24,097 $ ( 11 ) 1 $ — $ — — $ 24,097 $ ( 11 ) 1 U.S. Government sponsored entities and agencies — — — 203,447 ( 24,667 ) 44 203,447 ( 24,667 ) 44 Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 39,742 ( 142 ) 7 1,500,358 ( 218,207 ) 454 1,540,100 ( 218,349 ) 461 Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 9,922 ( 27 ) 1 211,519 ( 3,834 ) 53 221,441 ( 3,861 ) 54 Obligations of states and political subdivisions — — — 52,313 ( 2,255 ) 90 52,313 ( 2,255 ) 90 Corporate debt securities 2,500 ( 1 ) 2 7,454 ( 16 ) 2 9,954 ( 17 ) 4 Total $ 76,261 $ ( 181 ) 11 $ 1,975,091 $ ( 248,979 ) 643 $ 2,051,352 $ ( 249,160 ) 654 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)	9 Months Ended
	Sep. 30, 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 $ 11.3 million and $ 11.5 million at September 30, 2024 and December 31, 2023 , respectively. The unaccreted discount on purchased loans from acquisitions was $ 11.2 million at September 30, 2024 and $ 13.5 million at December 31, 2023. September 30, December 31, (unaudited, in thousands) 2024 2023 Commercial real estate: Land and construction $ 1,190,453 $ 1,055,865 Improved property 6,015,818 5,509,583 Total commercial real estate 7,206,271 6,565,448 Commercial and industrial 1,717,369 1,670,659 Residential real estate 2,519,089 2,438,574 Home equity 796,594 734,219 Consumer 212,107 229,561 Total portfolio loans 12,451,430 11,638,461 Loans held for sale 22,127 16,354 Total loans $ 12,473,557 $ 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 Nine Months Ended September 30, 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 1,662 2,584 9,987 2,365 383 1,674 1,119 19,774 Provision for loan commitments ( 63 ) 16 ( 300 ) ( 27 ) ( 5 ) — — ( 379 ) Total provision for credit 1,599 2,600 9,687 2,338 378 1,674 1,119 19,395 Charge-offs ( 813 ) ( 929 ) ( 6,744 ) ( 284 ) ( 795 ) ( 3,270 ) ( 1,324 ) ( 14,159 ) Recoveries 256 583 1,485 198 557 1,166 337 4,582 Net (charge-offs) recoveries ( 557 ) ( 346 ) ( 5,259 ) ( 86 ) ( 238 ) ( 2,104 ) ( 987 ) ( 9,577 ) Balance at September 30, 2024 Allowance for credit 8,228 61,589 41,372 23,497 1,162 3,526 1,498 140,872 Allowance for credit 6,831 16 129 1,249 — — — 8,225 Total ending allowance for credit $ 15,059 $ 61,605 $ 41,501 $ 24,746 $ 1,162 $ 3,526 $ 1,498 $ 149,097 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 ( 614 ) 7,595 3,678 1,582 ( 2,901 ) 1,315 957 11,612 Provision for loan commitments 1,247 — 1,087 ( 863 ) ( 110 ) — — 1,361 Total provision for credit 633 7,595 4,765 719 ( 3,011 ) 1,315 957 12,973 Charge-offs ( 222 ) ( 1,450 ) ( 1,498 ) ( 278 ) ( 670 ) ( 2,604 ) ( 1,262 ) ( 7,984 ) Recoveries 207 821 996 929 331 1,604 309 5,197 Net (charge-offs) recoveries ( 15 ) ( 629 ) ( 502 ) 651 ( 339 ) ( 1,000 ) ( 953 ) ( 2,787 ) Balance at September 30, 2023 Allowance for credit 6,108 59,625 34,716 20,441 994 3,442 1,289 126,615 Allowance for credit 7,272 — 1,087 1,352 18 — — 9,729 Total ending allowance for credit $ 13,380 $ 59,625 $ 35,803 $ 21,793 $ 1,012 $ 3,442 $ 1,289 $ 136,344 (1) Deposit overdrafts of $ 4.6 million and $ 4.5 million are included in total portfolio loans for the periods ending September 30, 2024 and September 30, 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 4, "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 September 30, 2024 Allowance for credit losses: Loans individually-evaluated $ — $ 5,652 $ 2,286 $ — $ — $ — $ — $ 7,938 Loans collectively-evaluated 8,228 55,937 39,086 23,497 1,162 3,526 1,498 132,934 Loan commitments (2) 6,831 16 129 1,249 — — — 8,225 Total allowance for credit $ 15,059 $ 61,605 $ 41,501 $ 24,746 $ 1,162 $ 3,526 $ 1,498 $ 149,097 Portfolio loans: Individually-evaluated for credit $ — $ 36,199 $ 2,286 $ — $ — $ — $ — $ 38,485 Collectively-evaluated for credit 1,190,453 5,979,619 1,715,083 2,519,089 796,594 212,107 — 12,412,945 Total portfolio loans $ 1,190,453 $ 6,015,818 $ 1,717,369 $ 2,519,089 $ 796,594 $ 212,107 $ — $ 12,451,430 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 $ 4.6 million and $ 4.7 million are included in total portfolio loans for the periods ending September 30, 2024 and December 31, 2023, respectively. (2) For additional detail relating to loan commitments, see Note 13, "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 September 30, 2024 Pass $ 1,186,387 $ 5,814,936 $ 1,628,592 $ 8,629,915 Criticized - compromised 3,575 115,117 81,848 200,540 Classified - substandard 491 85,765 6,929 93,185 Classified - doubtful — — — — Total $ 1,190,453 $ 6,015,818 $ 1,717,369 $ 8,923,640 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 September 30, 2024 Commercial real estate: Land and construction $ 1,190,453 $ — $ — $ — $ — $ 1,190,453 $ — Improved property 5,987,360 6,053 4,759 17,646 28,458 6,015,818 8,848 Total commercial real estate 7,177,813 6,053 4,759 17,646 28,458 7,206,271 8,848 Commercial and industrial 1,700,854 2,483 6,997 7,035 16,515 1,717,369 5,339 Residential real estate 2,505,489 1,471 3,158 8,971 13,600 2,519,089 4,489 Home equity 784,848 6,036 1,239 4,471 11,746 796,594 1,263 Consumer 207,072 3,153 1,319 563 5,035 212,107 488 Total portfolio loans 12,376,076 19,196 17,472 38,686 75,354 12,451,430 20,427 Loans held for sale 22,127 — — — — 22,127 — Total loans $ 12,398,203 $ 19,196 $ 17,472 $ 38,686 $ 75,354 $ 12,473,557 $ 20,427 Nonperforming loans included above are as follows: Non-accrual loans $ 9,256 $ 1,901 $ 1,005 $ 18,259 $ 21,165 $ 30,421 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 September 30, 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 $ — $ — $ — $ — $ — $ — Improved property 12,721 11,227 — 11,248 9,557 — Commercial and industrial 2,899 2,271 — 2,492 1,841 — Residential real estate 15,885 11,274 — 15,128 10,582 — Home equity 7,576 5,531 — 6,521 4,777 — Consumer 192 118 — 104 51 — Total nonperforming loans without a specific allowance 39,273 30,421 — 35,493 26,808 — Total nonperforming loans with a specific allowance — — — — — — Total nonperforming loans $ 39,273 $ 30,421 $ — $ 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 For the Nine Months Ended September 30, 2024 September 30, 2023 September 30, 2024 September 30, 2023 Average Interest Average Interest Average Interest Average Interest Recorded Income Recorded Income Recorded Income Recorded Income (unaudited, in thousands) Investment Recognized Investment Recognized Investment Recognized Investment Recognized With no related specific allowance recorded: Commercial real estate: Land and construction $ 92 $ — $ — $ — $ 99 $ — $ 28 $ — Improved property 13,992 — 11,243 — 12,766 — 14,322 — Commercial and industrial 2,165 — 2,244 — 2,234 — 2,702 — Residential real estate 11,140 — 11,832 — 11,135 — 13,139 — Home equity 5,466 — 5,292 — 5,095 — 5,205 — Consumer 91 — 107 — 77 — 121 — Total nonperforming loans without a specific allowance 32,945 — 30,717 — 31,406 — 35,517 — Total nonperforming loans with a specific allowance — — — — — — — — Total nonperforming loans $ 32,945 $ — $ 30,717 $ — $ 31,406 $ — $ 35,517 $ —
Recorded Investment in Non-Accrual Loans	The following table presents the recorded investment in non-accrual loans: Non-accrual Loans (1) September 30, December 31, (unaudited, in thousands) 2024 2023 Commercial real estate: Land and construction $ — $ — Improved property 11,227 9,557 Total commercial real estate 11,227 9,557 Commercial and industrial 2,271 1,841 Residential real estate 11,274 10,582 Home equity 5,531 4,777 Consumer 118 51 Total $ 30,421 $ 26,808 (1) At September 30, 2024 , there were four borrowers with a loan balance greater than $ 1.0 million, which totaled $ 8.2 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 and nine months ended September 30, 2024 and 2023 presented by loan category: For the Three Months Ended September 30, 2024 (unaudited, in thousands) Term Payment Total % of Commercial real estate - land and construction $ — $ — $ — — Commercial real estate - improved property 666 19,782 20,448 0.3 Commercial and industrial 1,204 250 1,454 0.1 Residential real estate — 1,273 1,273 0.1 Home equity — 638 638 0.1 Consumer — 182 182 0.1 Total $ 1,870 $ 22,125 $ 23,995 0.2 For the Three Months Ended September 30, 2023 (unaudited, in thousands) Term Payment Total Percent of Commercial real estate - land and construction $ — $ — $ — — Commercial real estate - improved property 159 — 159 — Commercial and industrial 136 43 179 — Residential real estate — 126 126 — Home equity — 258 258 — Consumer — 244 244 0.1 Total $ 295 $ 671 $ 966 — For the Nine Months Ended September 30, 2024 (unaudited, in thousands) Term Payment Total % of Commercial real estate - land and construction $ 5 $ — $ 5 — Commercial real estate - improved property 25,002 19,782 44,784 0.7 Commercial and industrial 1,622 250 1,872 0.1 Residential real estate — 1,990 1,990 0.1 Home equity — 1,023 1,023 0.1 Consumer — 345 345 0.2 Total $ 26,629 $ 23,390 $ 50,019 0.4 For the Nine Months Ended September 30, 2023 (unaudited, in thousands) Term Payment Total Percent of Commercial real estate - land and construction $ 173 $ — $ 173 — Commercial real estate - improved property 7,014 276 7,290 0.1 Commercial and industrial 9,276 43 9,319 0.6 Residential real estate — 226 226 — Home equity 8 936 944 0.1 Consumer — 505 505 0.2 Total $ 16,471 $ 1,986 $ 18,457 0.2 Unfunded loan commitments on modifications for borrowers experiencing financial difficulty ("MBEFDs") totaled $ 1.7 million for loans modified during the nine months ended September 30, 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 and nine months ended September 30, 2024 and 2023, presented by loan category: For the Three Months Ended For the Three Months Ended September 30, 2024 September 30, 2023 (unaudited, in thousands) Weighted-Average Weighted-Average Commercial real estate - land and construction — — Commercial real estate - improved property 7 3 Commercial and industrial 16 3 Residential real estate — — Home equity — — Consumer — — For the Nine Months Ended For the Nine Months Ended September 30, 2024 September 30, 2023 (unaudited, in thousands) Weighted-Average Weighted-Average Commercial real estate - land and construction 24 12 Commercial real estate - improved property 9 22 Commercial and industrial 22 9 Residential real estate — — Home equity — 120 Consumer — —
Summary of Loans with MBEFDs	The following table summarizes loans with MBEFDs which defaulted (defined as 90 days past due) within 12 months of the loan being modified during the three and nine months ended September 30, 2024 and 2023 . Modified loans, including those that have defaulted, are already included in the allowance for credit losses through the various methodologies used to estimate the allowance. As such, no modification to the allowance is recorded specifically due to a modified loan subsequently defaulting. For the Three Months Ended For the Three Months Ended September 30, 2024 September 30, 2023 (unaudited, in thousands) Term Payment Total Term Payment Total Commercial real estate - land and construction $ — $ — $ — $ — $ — $ — Commercial real estate - improved property — — — — — — Commercial and industrial 34 — 34 — — — Residential real estate — 137 137 — — — Home equity — 175 175 — — — Consumer — 36 36 — — — Total loans that subsequently defaulted $ 34 $ 348 $ 382 $ — $ — $ — For the Nine Months Ended For the Nine Months Ended September 30, 2024 September 30, 2023 (unaudited, in thousands) Term Payment Total Term Payment Total Commercial real estate - land and construction $ — $ — $ — $ — $ — $ — Commercial real estate - improved property — — — — — — Commercial and industrial 202 — 202 — — — Residential real estate — 276 276 — — — Home equity — 175 175 — — — Consumer — 69 69 — — — Total loans that subsequently defaulted $ 202 $ 520 $ 722 $ — $ — $ —
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 September 30, 2024 and September 30, 2023. September 30, 2024 (unaudited, in thousands) 30-59 Days 60-89 Days 90 Days Total Current Total Commercial real estate - land and construction $ — $ — $ — $ — $ 5 $ 5 Commercial real estate - improved property — 3,433 — 3,433 41,573 45,006 Commercial and industrial 250 — 34 284 1,587 1,871 Residential real estate — — 161 161 2,485 2,646 Home equity 64 — 309 373 924 1,297 Consumer 28 24 66 118 273 391 Total modified loans (1) $ 342 $ 3,457 $ 570 $ 4,369 $ 46,847 $ 51,216 September 30, 2023 (unaudited, in thousands) 30-59 Days 60-89 Days 90 Days Total Current Total Commercial real estate - land and construction $ — $ — $ — $ — $ 173 $ 173 Commercial real estate - improved property — 33 276 309 6,981 7,290 Commercial and industrial — 43 — 43 9,276 9,319 Residential real estate 67 — — 67 159 226 Home equity 46 24 101 171 773 944 Consumer 6 68 62 136 369 505 Total modified loans (1) $ 119 $ 168 $ 439 $ 726 $ 17,731 $ 18,457 (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 September 30, 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 $ 151,329 $ 395,639 $ 343,952 $ 92,995 $ 21,618 $ 53,644 $ 77,916 $ 49,294 $ 1,186,387 Criticized - compromised 1,436 — 1,115 — — 12 361 651 3,575 Classified - substandard — — — — — 6 — 485 491 Classified - doubtful — — — — — — — — — Total $ 152,765 $ 395,639 $ 345,067 $ 92,995 $ 21,618 $ 53,662 $ 78,277 $ 50,430 $ 1,190,453 Current-period gross charge-offs $ — $ 813 $ — $ — $ — $ — $ — $ — $ 813 Commercial real estate: improved property Risk rating: Pass $ 386,541 $ 573,034 $ 1,154,357 $ 578,734 $ 587,340 $ 1,979,742 $ 196,011 $ 359,177 $ 5,814,936 Criticized - compromised 3,666 18,354 13,654 10,324 3,750 34,578 1,209 29,582 115,117 Classified - substandard 19,782 1,848 5,666 407 2,313 55,075 621 53 85,765 Classified - doubtful — — — — — — — — — Total $ 409,989 $ 593,236 $ 1,173,677 $ 589,465 $ 593,403 $ 2,069,395 $ 197,841 $ 388,812 $ 6,015,818 Current-period gross charge-offs $ — $ — $ 75 $ — $ — $ 854 $ — $ — $ 929 Commercial and industrial Risk rating: Pass $ 190,160 $ 182,255 $ 208,230 $ 117,099 $ 51,255 $ 248,315 $ 579,330 $ 51,948 $ 1,628,592 Criticized - compromised 279 9,232 4,193 2,057 1,720 25,037 24,673 14,657 81,848 Classified - substandard 2,161 123 543 949 55 1,059 901 1,138 6,929 Classified - doubtful — — — — — — — — — Total $ 192,600 $ 191,610 $ 212,966 $ 120,105 $ 53,030 $ 274,411 $ 604,904 $ 67,743 $ 1,717,369 Current-period gross charge-offs $ 48 $ 567 $ 717 $ 228 $ 148 $ 407 $ 1 $ 4,628 $ 6,744 Residential real estate Loan delinquency: Current $ 155,617 $ 265,992 $ 363,598 $ 408,559 $ 172,607 $ 488,396 $ — $ 650,720 $ 2,505,489 30-59 days past due — — — — — 1,471 — — 1,471 60-89 days past due — 142 — — 205 2,811 — — 3,158 90 days or more past due — — 849 128 — 5,727 — 2,267 8,971 Total $ 155,617 $ 266,134 $ 364,447 $ 408,687 $ 172,812 $ 498,405 $ — $ 652,987 $ 2,519,089 Current-period gross charge-offs $ — $ — $ — $ — $ — $ 226 $ — $ 58 $ 284 Home equity Loan delinquency: Current $ 11,347 $ 1,432 $ 2,090 $ 976 $ 2,584 $ 20,996 $ 744,251 $ 1,172 $ 784,848 30-59 days past due — 289 780 15 32 1,299 3,621 — 6,036 60-89 days past due — 131 232 80 — 748 — 48 1,239 90 days or more past due — 818 551 228 337 2,066 185 286 4,471 Total $ 11,347 $ 2,670 $ 3,653 $ 1,299 $ 2,953 $ 25,109 $ 748,057 $ 1,506 $ 796,594 Current-period gross charge-offs $ — $ 316 $ 105 $ 65 $ 35 $ 197 $ 28 $ 49 $ 795 Consumer Loan delinquency: Current $ 44,653 $ 62,137 $ 42,197 $ 14,117 $ 7,233 $ 11,745 $ 24,990 $ — $ 207,072 30-59 days past due 361 1,070 907 474 174 124 43 — 3,153 60-89 days past due 296 429 326 129 37 102 — — 1,319 90 days or more past due 67 94 244 31 37 90 — — 563 Total $ 45,377 $ 63,730 $ 43,674 $ 14,751 $ 7,481 $ 12,061 $ 25,033 $ — $ 212,107 Current-period gross charge-offs $ 104 $ 1,193 $ 1,174 $ 411 $ 144 $ 244 $ — $ — $ 3,270 Loans As of December 31, 2023 Amortized Cost Basis by Origination Year (unaudited 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: September 30, December 31, (unaudited, in thousands) 2024 2023 Other real estate owned $ 670 $ 1,207 Repossessed assets 236 290 Total other real estate owned and repossessed assets $ 906 $ 1,497

Investments In Limited Partne_2

Investments In Limited Partnerships (Tables)	9 Months Ended
	Sep. 30, 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 September 30, 2024 (unaudited, in thousands) : Year Amount 2024 $ 3,673 2025 5,085 2026 3,148 2027 950 2028 588 2029 and thereafter 1,726 Total $ 15,170

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 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 September 30, 2024 and December 31, 2023: September 30, 2024 December 31, 2023 (unaudited, in thousands) Notional or Asset Liability Notional or Asset Liability Derivatives Loan Swaps: Interest rate swaps and caps $ 1,873,665 $ 66,910 $ 68,708 $ 1,573,152 $ 72,183 $ 73,083 Other contracts: Interest rate lock commitments 33,968 — 40 16,524 84 — Forward TBA contracts 41,500 — 160 27,000 — 205 Total derivatives $ 66,910 $ 68,908 $ 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 and nine months ended September 30, 2024 and 2023, respectively. For the Three Months For the Nine Months (unaudited, in thousands) Location of Gain/(Loss) 2024 2023 2024 2023 Interest rate swaps and caps Net swap fee and valuation (loss) income $ ( 1,702 ) $ 1,352 $ ( 895 ) $ 489 Interest rate lock commitments Mortgage banking income ( 8 ) 94 ( 124 ) ( 34 ) Forward TBA contracts Mortgage banking income ( 621 ) 422 ( 526 ) 870 Total $ ( 2,331 ) $ 1,868 $ ( 1,545 ) $ 1,325

Benefit Plans (Tables)

Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 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 For the Nine Months (unaudited, in thousands) 2024 2023 2024 2023 Service cost – benefits earned during year $ 334 $ 357 $ 994 $ 1,061 Interest cost on projected benefit obligation 1,620 1,589 4,826 4,715 Expected return on plan assets ( 2,627 ) ( 2,811 ) ( 7,825 ) ( 8,342 ) Amortization of prior service cost ( 9 ) ( 9 ) ( 26 ) ( 27 ) Amortization of net loss 21 227 63 675 Net periodic pension income $ ( 661 ) $ ( 647 ) $ ( 1,968 ) $ ( 1,918 )

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 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 September 30, 2024 and December 31, 2023: September 30, 2024 Fair Value Measurements Using: September 30, Quoted Prices in Significant Significant (unaudited, in thousands) 2024 (level 1) (level 2) (level 3) Recurring fair value measurements Equity securities $ 13,355 $ 13,355 $ — $ — Available-for-sale debt securities U.S. Treasury 97,661 97,661 — — U.S. Government sponsored entities and agencies 203,447 — 203,447 — Residential mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 1,595,045 — 1,595,045 — Commercial mortgage-backed securities and collateralized mortgage obligations of government sponsored entities and agencies 248,626 — 248,626 — Obligations of states and political subdivisions 71,794 — 70,674 1,120 Corporate debt securities 11,954 — 11,954 — Total available-for-sale debt securities $ 2,228,527 $ 97,661 $ 2,129,746 $ 1,120 Loans held for sale 22,127 — 22,127 — Other assets - interest rate swaps 66,910 — 66,910 — Total assets recurring fair value measurements $ 2,330,919 $ 111,016 $ 2,218,783 $ 1,120 Other liabilities - interest rate swaps $ 68,708 $ — $ 68,708 $ — Total liabilities recurring fair value measurements $ 68,708 $ — $ 68,708 $ — Nonrecurring fair value measurements Collateral dependent loans $ 21,259 $ — $ — $ 21,259 Other real estate owned and repossessed assets 906 — — 906 Total nonrecurring fair value measurements $ 22,165 $ — $ — $ 22,165 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) September 30, 2024 Collateral dependent loans $ 21,259 Appraisal of collateral (1) Appraisal adjustments (2) ( 0.0 %)/( 0.0 %) Liquidation expenses (2) ( 7.5 %)% to ( 8.0 %)/( 7.9 %) Other real estate owned and repossessed assets $ 906 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 September 30, 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 $ 620,897 $ 620,897 $ 620,897 $ — $ — Equity securities 13,355 13,355 13,355 — — Available-for-sale debt securities 2,228,527 2,228,527 97,661 2,129,746 1,120 Net held-to-maturity debt securities 1,162,211 1,052,781 — 1,052,549 232 Net loans 12,310,558 12,018,968 — — 12,018,968 Loans held for sale 22,127 22,127 — 22,127 — Other assets - interest rate derivatives 66,910 66,910 — 66,910 — Accrued interest receivable 79,465 79,465 79,465 — — Financial Liabilities Deposits 13,837,343 13,827,070 12,173,849 1,653,221 — Federal Home Loan Bank borrowings 1,175,000 1,176,840 — 1,176,840 — Other borrowings 140,641 140,492 140,492 — — Subordinated debt and junior subordinated debt 279,251 232,112 — 232,112 — Other liabilities - interest rate derivatives 68,708 68,708 — 68,708 — Accrued interest payable 16,406 16,406 16,406 — — 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)	9 Months Ended
	Sep. 30, 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 and nine months ended September 30, 2024 and 2023, respectively: Point of Revenue For the Three Months For the Nine Months (unaudited, in thousands) Recognition 2024 2023 2024 2023 Revenue Streams Trust fees Trust account fees Over time $ 5,467 $ 4,751 $ 16,854 $ 15,365 WesMark fees Over time 2,050 1,954 6,048 5,751 Total trust fees 7,517 6,705 22,902 21,116 Service charges on deposits Commercial banking fees Over time 1,358 756 3,844 2,015 Personal service charges At a point in time and over time 6,587 5,970 17,997 17,113 Total service charges on deposits 7,945 6,726 21,841 19,128 Net securities brokerage revenue Annuity commissions At a point in time 2,008 1,804 5,958 5,689 Equity and debt security trades At a point in time 81 54 231 203 Managed money Over time 298 275 824 842 Trail commissions Over time 272 261 795 758 Total net securities brokerage revenue 2,659 2,394 7,808 7,492 Payment processing fees (1) At a point in time and over time 925 939 2,659 2,761 Digital banking income At a point in time 5,084 4,949 14,828 14,564 Net swap fee and valuation (loss) income (2) At a point in time ( 627 ) 3,845 2,712 7,257 Mortgage banking income At a point in time 1,280 975 3,042 2,002 Net (loss) gain on other real estate owned and other assets At a point in time and over time ( 239 ) ( 28 ) ( 51 ) 1,075 (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 (losses) gains of $( 1.7 ) million and $ 1.4 million for the three months ended September 30, 2024 and 2023, respectively, and (losses) gains of $( 0.9 ) million and $ 0.5 million for the nine months ended September 30, 2024 and 2023, respectively.

Comprehensive Income_(Loss) (Ta

Comprehensive Income/(Loss) (Tables)	9 Months Ended
	Sep. 30, 2024
Equity [Abstract]
Components of Accumulated Other Comprehensive Income (Loss)	The activity in accumulated other comprehensive income/(loss) for the nine months ended September 30, 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 income before reclassifications — 45,262 45,262 Amounts reclassified from accumulated other comprehensive loss ( 207 ) ( 166 ) ( 373 ) Period change ( 207 ) 45,096 44,889 Balance at September 30, 2024 $ 6,308 $ ( 188,112 ) $ ( 181,804 ) Balance at December 31, 2022 $ ( 535 ) $ ( 261,881 ) $ ( 262,416 ) Other comprehensive loss before reclassifications — ( 35,889 ) ( 35,889 ) Amounts reclassified from accumulated other comprehensive income 226 173 399 Period change 226 ( 35,716 ) ( 35,490 ) Balance at September 30, 2023 $ ( 309 ) $ ( 297,597 ) $ ( 297,906 ) (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 and nine months ended September 30, 2024 and 2023: Details about Accumulated Other Comprehensive For the Three Months For the Nine Months Affected Line Item in the Statement (unaudited, in thousands) 2024 2023 2024 2023 Debt securities available-for-sale (1) : Net securities losses reclassified into earnings $ — $ 69 $ 12 $ 228 Net securities gains/(losses) (Non-interest income) Related income tax effect ⁽²⁾ ( 58 ) ( 17 ) ( 178 ) ( 55 ) Provision for income taxes Net effect on accumulated other comprehensive ( 58 ) 52 ( 166 ) 173 Defined benefit plans (3) : Amortization of net (gain) loss and prior service costs ( 101 ) 100 ( 304 ) 298 Employee benefits (Non-interest expense) Related income tax effect ⁽²⁾ 24 ( 24 ) 97 ( 72 ) Provision for income taxes Net effect on accumulated other comprehensive ( 77 ) 76 ( 207 ) 226 Total reclassifications for the period $ ( 135 ) $ 128 $ ( 373 ) $ 399 (1) For additional detail related to unrealized gains on securities and related amounts reclassified from accumulated other comprehensive income, see Note 4, “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 8, “Benefit Plans” for additional detail.

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	9 Months Ended
	Sep. 30, 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: September 30, December 31, (unaudited, in thousands) 2024 2023 Lines of credit $ 4,166,960 $ 4,016,658 Loans approved but not closed 289,531 275,954 Overdraft limits 396,953 391,598 Letters of credit 45,624 38,929 Contingent obligations and other guarantees 22,577 15,037

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 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 September 30, 2024 Interest and dividend income $ 213,729 $ — $ 213,729 Interest expense 92,587 — 92,587 Net interest income 121,142 — 121,142 Provision for credit losses 4,798 — 4,798 Net interest income after provision for credit losses 116,344 — 116,344 Non-interest income 22,095 7,517 29,612 Non-interest expense 96,090 5,093 101,183 Income before provision for income taxes 42,349 2,424 44,773 Provision for income taxes 6,992 509 7,501 Net income 35,357 1,915 37,272 Preferred stock dividends 2,531 — 2,531 Net income available to common shareholders $ 32,826 $ 1,915 $ 34,741 For The Three Months Ended September 30, 2023 Interest and dividend income $ 183,589 $ — $ 183,589 Interest expense 65,907 — 65,907 Net interest income 117,682 — 117,682 Provision for credit losses 6,327 — 6,327 Net interest income after provision for credit losses 111,355 — 111,355 Non-interest income 24,175 6,704 30,879 Non-interest expense 92,815 5,124 97,939 Income before provision for income taxes 42,715 1,580 44,295 Provision for income taxes 7,121 332 7,453 Net income 35,594 1,248 36,842 Preferred stock dividends 2,531 — 2,531 Net income available to common shareholders $ 33,063 $ 1,248 $ 34,311 For the Nine Months Ended September 30, 2024 Interest and dividend income $ 612,055 $ — $ 612,055 Interest expense 260,354 — 260,354 Net interest income 351,701 — 351,701 Provision for credit losses 19,352 — 19,352 Net interest income after provision for credit losses 332,349 — 332,349 Non-interest income 68,694 22,902 91,596 Non-interest expense 285,463 15,305 300,768 Income before provision for income taxes 115,580 7,597 123,177 Provision for income taxes 19,701 1,595 21,296 Net income 95,879 6,002 101,881 Preferred stock dividends 7,594 — 7,594 Net income available to common shareholders $ 88,285 $ 6,002 $ 94,287 For the Nine Months Ended September 30, 2023 Interest and dividend income $ 520,198 $ — $ 520,198 Interest expense 156,618 — 156,618 Net interest income 363,580 — 363,580 Provision for credit losses 12,932 — 12,932 Net interest income after provision for credit losses 350,648 — 350,648 Non-interest income 69,256 21,116 90,372 Non-interest expense 276,247 14,251 290,498 Income before provision for income taxes 143,657 6,865 150,522 Provision for income taxes 25,016 1,442 26,458 Net income 118,641 5,423 124,064 Preferred stock dividends 7,594 — 7,594 Net income available to common shareholders $ 111,047 $ 5,423 $ 116,470

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail)	Sep. 30, 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

Mergers and Acquisitions - Addi

Mergers and Acquisitions - Additional Information (Detail) - Premier Financial Corporation [Member] - Merger Agreement [Member] $ in Millions		9 Months Ended
	Jul. 25, 2024	Sep. 30, 2024 USD ($) Branch
Business Acquisition [Line Items]
Assets		$ 8,700
Loans		6,600
Deposits		7,100
Stockholders' equity		$ 1,000
Number of branches | Branch		73
Ratio for exchange of common stock for each share	0.8
Merger-related expenses		$ 2

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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator for both basic and diluted earnings per common share:
Net income available to common shareholders	$ 34,741	$ 34,311	$ 94,287	$ 116,470
Denominator:
Total average basic common shares outstanding	64,488,962	59,358,653	61,143,452	59,280,644
Effect of dilutive stock options and other stock compensation	145,246	84,713	129,150	105,785
Total diluted average common shares outstanding	64,634,208	59,443,366	61,272,602	59,386,429
Earnings per common share - basic	$ 0.54	$ 0.58	$ 1.54	$ 1.96
Earnings per common share - diluted	$ 0.54	$ 0.58	$ 1.54	$ 1.96

Earnings Per Common Share - Add

Earnings Per Common Share - Additional Information (Detail) - USD ($) $ in Thousands		9 Months Ended
	Aug. 01, 2024	Sep. 30, 2024	Sep. 30, 2023
Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Line Items]
Shares contingently issuable under shareholder return plan		0	0
Proceeds from issuance of common stock		$ 190,967
Premier Financial Corporation [Member]
Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Line Items]
Issuance of common stock, net of issuance costs, shares	7,272,728
Proceeds from issuance of common stock	$ 200,000
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		472,401	596,642
Restricted Stock [Member]
Schedule Of Antidilutive Securities Included In Computation Of Earnings Per Share [Line Items]
Shares contingently issuable under shareholder return plan		87,992	70,568

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	Sep. 30, 2024	Dec. 31, 2023
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	$ 2,476,736	$ 2,501,188
Available-for-sale, Gross Unrealized Gains	951	225
Available-for-sale, Gross Unrealized Losses	(249,160)	(307,084)
Available-for-sale, Fair Value	2,228,527	2,194,329
Held-to-maturity, Amortized Cost	1,162,359	1,199,527
Held-to-maturity, Gross Unrealized Gains	800	852
Held-to-maturity, Gross Unrealized Losses	(110,378)	(131,220)
Held-to-maturity securities, Fair value	1,052,781	1,069,159
Total debt securities, Amortized Cost	3,639,095	3,700,715
Total debt securities, Gross Unrealized Gains	1,751	1,077
Total debt securities, Gross Unrealized Losses	(359,538)	(438,304)
Total securities, Fair Value	3,281,308	3,263,488
U.S. Treasury [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	97,625
Available-for-sale, Gross Unrealized Gains	47
Available-for-sale, Gross Unrealized Losses	(11)
Available-for-sale, Fair Value	97,661
U.S. Government Sponsored Entities and Agencies [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	228,114	238,676
Available-for-sale, Gross Unrealized Losses	(24,667)	(30,310)
Available-for-sale, Fair Value	203,447	208,366
Held-to-maturity, Amortized Cost	3,239	3,587
Held-to-maturity, Gross Unrealized Losses	(233)	(313)
Held-to-maturity securities, Fair value	3,006	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	1,812,671	1,897,511
Available-for-sale, Gross Unrealized Gains	723	47
Available-for-sale, Gross Unrealized Losses	(218,349)	(267,874)
Available-for-sale, Fair Value	1,595,045	1,629,684
Held-to-maturity, Amortized Cost	34,333	38,893
Held-to-maturity, Gross Unrealized Losses	(2,023)	(3,017)
Held-to-maturity securities, Fair value	32,310	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	252,434	274,220
Available-for-sale, Gross Unrealized Gains	53	11
Available-for-sale, Gross Unrealized Losses	(3,861)	(5,924)
Available-for-sale, Fair Value	248,626	268,307
Obligations of State and Political Subdivisions [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	73,921	78,819
Available-for-sale, Gross Unrealized Gains	128	167
Available-for-sale, Gross Unrealized Losses	(2,255)	(2,861)
Available-for-sale, Fair Value	71,794	76,125
Held-to-maturity, Amortized Cost	1,106,602	1,136,779
Held-to-maturity, Gross Unrealized Gains	800	852
Held-to-maturity, Gross Unrealized Losses	(107,987)	(127,518)
Held-to-maturity securities, Fair value	999,415	1,010,113
Corporate Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Available-for-sale, Amortized Cost	11,971	11,962
Available-for-sale, Gross Unrealized Losses	(17)	(115)
Available-for-sale, Fair Value	11,954	11,847
Held-to-maturity, Amortized Cost	18,185	20,268
Held-to-maturity, Gross Unrealized Losses	(135)	(372)
Held-to-maturity securities, Fair value	$ 18,050	$ 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	Sep. 30, 2024	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Allowance for credit losses, held-to-maturity debt securities	$ 148	$ 192

Securities - Additional Informa

Securities - Additional Information (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($) Holding	Sep. 30, 2023 USD ($)	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	$ 13,355		$ 12,320
Other assets	370,273		388,561
Proceeds from sale of available-for-sale securities	0	$ 30,987
Net unrealized losses on available-for-sale securities included in AOCI	188,100		233,200
Accrued interest receivable	79,465		77,435
Federal home loan bank stock, Total	55,200		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	8,400		8,800
Grantor Trusts [Member]
Schedule Of Available For Sale Securities And Held To Maturity [Line Items]
Equities securities	$ 10,700		$ 9,700

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	Sep. 30, 2024	Dec. 31, 2023
Amortized Cost And Fair Value Debt Securities [Abstract]
Total available-for-sale debt securities, Amortized Cost, Within one year	$ 129,485
Total available-for-sale debt securities, Amortized Cost, After 1 year through 5 years	213,579
Total available-for-sale debt securities, Amortized Cost, After 5 years through 10 years	230,433
Total available-for-sale debt securities, Amortized Cost, After 10 years	1,903,239
Available-for-sale, Amortized Cost	2,476,736	$ 2,501,188
Total held-to-maturity debt securities, Amortized Cost, Within one year	24,983
Total held-to-maturity debt securities, Amortized Cost, After 1 year through 5 years	117,995
Total held-to-maturity debt securities, Amortized Cost, After 5 years through 10 years	515,057
Total held-to-maturity debt securities, Amortized Cost, After 10 years	504,324
Held-to-maturity, Amortized Cost	1,162,359	1,199,527
Total debt securities, Amortized Cost	3,639,095	3,700,715
Total available-for-sale debt securities, Fair Value, Within one year	129,307
Total available-for-sale debt securities, Fair Value, After 1 year through 5 years	209,064
Total available-for-sale debt securities, Fair Value, After 5 years through 10 years	221,278
Total available-for-sale debt securities, Fair Value, After 10 years	1,668,878
Total available-for-sale debt securities, Fair Value	2,228,527	2,194,329
Total held-to-maturity debt securities, Fair Value, Within one year	24,892
Total held-to-maturity debt securities, Fair Value, After 1 year through 5 years	117,231
Total held-to-maturity debt securities, Fair Value, After 5 years through 10 years	482,053
Total held-to-maturity debt securities, Fair Value, After 10 years	428,605
Total held-to-maturity debt securities, Fair Value	1,052,781	1,069,159
Total debt securities, Fair Value	$ 3,281,308	$ 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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt securities:
Gross realized gains				$ 65
Gross realized losses	$ (13)	$ (80)	$ (25)	(286)
Net losses on debt securities	(13)	(80)	(25)	(221)
Equity securities:
Net unrealized gains (losses) recognized on securities still held	688	(257)	1,372	234
Net securities gains (losses)	$ 675	$ (337)	$ 1,347	$ 13

Securities - Schedule of Allowa

Securities - Schedule of Allowance for Credit Losses on Held-to-maturity Securities (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Beginning balance	$ 192
Ending balance	148
ASU 2016-13 [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Beginning balance	192	$ 220
Current period provision	(44)	(40)
Ending balance	148	180
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	(34)	(22)
Ending balance	126	145
ASU 2016-13 [Member] | Corporate Debt Securities [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Beginning balance	32	53
Current period provision	(10)	(18)
Ending balance	$ 22	$ 35

Securities - Schedule of Unreal

Securities - Schedule of Unrealized Losses on Investment Securities (Detail) $ in Thousands	Sep. 30, 2024 USD ($) Security	Dec. 31, 2023 USD ($) Security
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 76,261	$ 20,407
Less than 12 months, Unrealized Losses	$ (181)	$ (136)
Less than 12 months, Number of Securities | Security	11	24
12 months or more, Fair Value	$ 1,975,091	$ 2,141,624
12 months or more, Unrealized Losses	$ (248,979)	$ (306,948)
12 months or more, Number of Securities | Security	643	654
Fair Value, Total	$ 2,051,352	$ 2,162,031
Unrealized Losses, Total	$ (249,160)	$ (307,084)
Number of Securities Total | Security	654	678
US Treasury Securities [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 24,097
Less than 12 months, Unrealized Losses	$ (11)
Less than 12 months, Number of Securities | Security	1
Fair Value, Total	$ 24,097
Unrealized Losses, Total	$ (11)
Number of Securities Total | Security	1
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	$ 203,447	$ 208,348
12 months or more, Unrealized Losses	$ (24,667)	$ (30,309)
12 months or more, Number of Securities | Security	44	45
Fair Value, Total	$ 203,447	$ 208,366
Unrealized Losses, Total	$ (24,667)	$ (30,310)
Number of Securities Total | Security	44	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]
Less than 12 months, Fair Value	$ 39,742
Less than 12 months, Unrealized Losses	$ (142)
Less than 12 months, Number of Securities | Security	7
12 months or more, Fair Value	$ 1,500,358	$ 1,625,144
12 months or more, Unrealized Losses	$ (218,207)	$ (267,874)
12 months or more, Number of Securities | Security	454	467
Fair Value, Total	$ 1,540,100	$ 1,625,144
Unrealized Losses, Total	$ (218,349)	$ (267,874)
Number of Securities Total | Security	461	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	$ 9,922	$ 5,520
Less than 12 months, Unrealized Losses	$ (27)	$ (31)
Less than 12 months, Number of Securities | Security	1	1
12 months or more, Fair Value	$ 211,519	$ 251,765
12 months or more, Unrealized Losses	$ (3,834)	$ (5,893)
12 months or more, Number of Securities | Security	53	60
Fair Value, Total	$ 221,441	$ 257,285
Unrealized Losses, Total	$ (3,861)	$ (5,924)
Number of Securities Total | Security	54	61
Obligations of State and Political Subdivisions [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value		$ 10,387
Less than 12 months, Unrealized Losses		$ (86)
Less than 12 months, Number of Securities | Security		19
12 months or more, Fair Value	$ 52,313	$ 49,002
12 months or more, Unrealized Losses	$ (2,255)	$ (2,775)
12 months or more, Number of Securities | Security	90	79
Fair Value, Total	$ 52,313	$ 59,389
Unrealized Losses, Total	$ (2,255)	$ (2,861)
Number of Securities Total | Security	90	98
Corporate Debt Securities [Member]
Net Unrealized Gains And Losses On Investments [Line Items]
Less than 12 months, Fair Value	$ 2,500	$ 4,482
Less than 12 months, Unrealized Losses	$ (1)	$ (18)
Less than 12 months, Number of Securities | Security	2	3
12 months or more, Fair Value	$ 7,454	$ 7,365
12 months or more, Unrealized Losses	$ (16)	$ (97)
12 months or more, Number of Securities | Security	2	3
Fair Value, Total	$ 9,954	$ 11,847
Unrealized Losses, Total	$ (17)	$ (115)
Number of Securities Total | Security	4	6

Loans and the Allowance for C_3

Loans and the Allowance for Credit Losses - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing Receivable, Recorded Investment [Line Items]
Net deferred loan fee income (costs)	$ (11,300,000)		$ (11,300,000)		$ (11,500,000)
Un-accreted discount on purchased loans from acquisitions	11,200,000		11,200,000		13,500,000
Reserve on accrued interest related to CARES Act	100,000		100,000
Reserve on accrued interest related to individually-evaluated loans	$ 300,000		$ 300,000
Percentage of national unemployment projection	4.60%		4.60%
Expected average percentage of national unemployment in future	5%		5%
Accrued interest receivable for loans	$ 64,300,000		$ 64,300,000		62,200,000
Accrued interest receivable for loans related to CARES Act	14,700,000		14,700,000		15,600,000
Aggregate amount of residential real estate, home equity and consumer loans classified as substandard	23,200,000		23,200,000		20,000,000
Internally assigned loan grades to residential real estate, home equity and consumer loans	6,200,000		6,200,000		4,600,000
Unfunded commercial loan commitments	41,900,000		41,900,000		21,200,000
Modification loans	23,995,000	$ 966,000	50,019,000	$ 18,457,000
TDRs defaulted	382,000		722,000
Other real estate owned	670,000		670,000		1,207,000
Net charge-offs			9,577,000	2,787,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Modification loans	1,273,000	126,000	1,990,000	226,000
TDRs defaulted	137,000		276,000
Other real estate owned	0		0		0
Foreclosure proceedings in process on residential real estate loans	3,100,000		3,100,000		4,000,000
Net charge-offs			86,000	(651,000)
90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Modification to allowance due to modified loan subsequently defaulting	0		0
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Modification loans	1,454,000	$ 179,000	1,872,000	9,319,000
TDRs defaulted	$ 34,000		202,000
Net charge-offs			5,259,000	$ 502,000
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			$ 1,700,000		$ 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	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	$ 12,451,430	$ 11,638,461
Loans held for sale	22,127	16,354
Total loans	12,473,557	11,654,815
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	1,717,369	1,670,659
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	7,206,271	6,565,448
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	1,190,453	1,055,865
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	6,015,818	5,509,583
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	2,519,089	2,438,574
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	212,107	229,561
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total portfolio loans	$ 796,594	$ 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	9 Months Ended
	Sep. 30, 2024	Sep. 30, 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	19,774	11,612
Provision for loan commitments	(379)	1,361
Total provision for credit losses - loans and loan commitments	19,395	12,973
Charge-offs	(14,159)	(7,984)
Recoveries	4,582	5,197
Net (charge-offs) recoveries	(9,577)	(2,787)
Allowance for credit losses - loans, ending balance	140,872	126,615
Allowance for credit losses - loan commitments, ending balance	8,225	9,729
Total ending allowance for credit losses - loans and loan commitments	149,097	136,344
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	9,987	3,678
Provision for loan commitments	(300)	1,087
Total provision for credit losses - loans and loan commitments	9,687	4,765
Charge-offs	(6,744)	(1,498)
Recoveries	1,485	996
Net (charge-offs) recoveries	(5,259)	(502)
Allowance for credit losses - loans, ending balance	41,372	34,716
Allowance for credit losses - loan commitments, ending balance	129	1,087
Total ending allowance for credit losses - loans and loan commitments	41,501	35,803
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	1,119	957
Total provision for credit losses - loans and loan commitments	1,119	957
Charge-offs	(1,324)	(1,262)
Recoveries	337	309
Net (charge-offs) recoveries	(987)	(953)
Allowance for credit losses - loans, ending balance	1,498	1,289
Total ending allowance for credit losses - loans and loan commitments	1,498	1,289
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	1,662	(614)
Provision for loan commitments	(63)	1,247
Total provision for credit losses - loans and loan commitments	1,599	633
Charge-offs	(813)	(222)
Recoveries	256	207
Net (charge-offs) recoveries	(557)	(15)
Allowance for credit losses - loans, ending balance	8,228	6,108
Allowance for credit losses - loan commitments, ending balance	6,831	7,272
Total ending allowance for credit losses - loans and loan commitments	15,059	13,380
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	2,584	7,595
Provision for loan commitments	16
Total provision for credit losses - loans and loan commitments	2,600	7,595
Charge-offs	(929)	(1,450)
Recoveries	583	821
Net (charge-offs) recoveries	(346)	(629)
Allowance for credit losses - loans, ending balance	61,589	59,625
Allowance for credit losses - loan commitments, ending balance	16
Total ending allowance for credit losses - loans and loan commitments	61,605	59,625
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	2,365	1,582
Provision for loan commitments	(27)	(863)
Total provision for credit losses - loans and loan commitments	2,338	719
Charge-offs	(284)	(278)
Recoveries	198	929
Net (charge-offs) recoveries	(86)	651
Allowance for credit losses - loans, ending balance	23,497	20,441
Allowance for credit losses - loan commitments, ending balance	1,249	1,352
Total ending allowance for credit losses - loans and loan commitments	24,746	21,793
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	1,674	1,315
Total provision for credit losses - loans and loan commitments	1,674	1,315
Charge-offs	(3,270)	(2,604)
Recoveries	1,166	1,604
Net (charge-offs) recoveries	(2,104)	(1,000)
Allowance for credit losses - loans, ending balance	3,526	3,442
Total ending allowance for credit losses - loans and loan commitments	3,526	3,442
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	383	(2,901)
Provision for loan commitments	(5)	(110)
Total provision for credit losses - loans and loan commitments	378	(3,011)
Charge-offs	(795)	(670)
Recoveries	557	331
Net (charge-offs) recoveries	(238)	(339)
Allowance for credit losses - loans, ending balance	1,162	994
Allowance for credit losses - loan commitments, ending balance		18
Total ending allowance for credit losses - loans and loan commitments	$ 1,162	$ 1,012

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	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Receivables [Abstract]
Deposit overdrafts	$ 4.6	$ 4.7	$ 4.5

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	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	$ 7,938	$ 5,745
Allowance for loans collectively evaluated for impairment	132,934	124,930
Allowance for loan commitments	8,225	8,604	$ 9,729	$ 8,368
Total allowance for credit losses - loans and commitments	149,097	139,279	136,344	126,158
Individually evaluated for credit loss	38,485	37,045
Collectively-evaluated for credit losses	12,412,945	11,601,416
Total loans	12,451,430	11,638,461
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	2,286
Allowance for loans collectively evaluated for impairment	39,086	36,644
Allowance for loan commitments	129	429	1,087
Total allowance for credit losses - loans and commitments	41,501	37,073	35,803	31,540
Individually evaluated for credit loss	2,286	116
Collectively-evaluated for credit losses	1,715,083	1,670,543
Total loans	1,717,369	1,670,659
Deposit Overdraft [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	1,498	1,366
Total allowance for credit losses - loans and commitments	1,498	1,366	1,289	1,285
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	7,206,271	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	8,228	7,123
Allowance for loan commitments	6,831	6,894	7,272	6,025
Total allowance for credit losses - loans and commitments	15,059	14,017	13,380	12,762
Collectively-evaluated for credit losses	1,190,453	1,055,865
Total loans	1,190,453	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	5,652	5,745
Allowance for loans collectively evaluated for impairment	55,937	53,606
Allowance for loan commitments	16
Total allowance for credit losses - loans and commitments	61,605	59,351	59,625	52,659
Individually evaluated for credit loss	36,199	36,929
Collectively-evaluated for credit losses	5,979,619	5,472,654
Total loans	6,015,818	5,509,583
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	23,497	21,218
Allowance for loan commitments	1,249	1,276	1,352	2,215
Total allowance for credit losses - loans and commitments	24,746	22,494	21,793	20,423
Collectively-evaluated for credit losses	2,519,089	2,438,574
Total loans	2,519,089	2,438,574
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	3,526	3,956
Total allowance for credit losses - loans and commitments	3,526	3,956	3,442	3,127
Collectively-evaluated for credit losses	212,107	229,561
Total loans	212,107	229,561
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans collectively evaluated for impairment	1,162	1,017
Allowance for loan commitments		5	18	128
Total allowance for credit losses - loans and commitments	1,162	1,022	$ 1,012	$ 4,362
Collectively-evaluated for credit losses	796,594	734,219
Total loans	$ 796,594	$ 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	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Receivables [Abstract]
Deposit overdrafts	$ 4.6	$ 4.7	$ 4.5

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	Sep. 30, 2024	Dec. 31, 2023
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	$ 12,451,430	$ 11,638,461
Commercial and Industrial [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	1,717,369	1,670,659
Commercial and Industrial [Member] | Pass [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	1,628,592	1,586,683
Commercial and Industrial [Member] | Criticized [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	81,848	73,204
Commercial and Industrial [Member] | Classified - substandard [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	6,929	10,772
Commercial Portfolio Segment [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	8,923,640	8,236,107
Commercial Portfolio Segment [Member] | Pass [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	8,629,915	7,977,436
Commercial Portfolio Segment [Member] | Criticized [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	200,540	183,174
Commercial Portfolio Segment [Member] | Classified - substandard [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	93,185	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	1,190,453	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	1,186,387	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	3,575	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	491	9
Commercial Portfolio Segment [Member] | Commercial Real Estate - Improved Property [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	6,015,818	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	5,814,936	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	115,117	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	85,765	64,716
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Summary of commercial loans by risk grade
Portfolio loans, net of unearned income	1,717,369	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	1,628,592	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	81,848	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	$ 6,929	$ 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	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	$ 12,451,430	$ 11,638,461
90 Days or More Past Due and Accruing	20,427	9,638
Loans held for sale	22,127	16,354
Total loans, current	12,398,203	11,604,632
Total loans	12,473,557	11,654,815
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	796,594	734,219
90 Days or More Past Due and Accruing	1,263	1,407
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	7,206,271	6,565,448
90 Days or More Past Due and Accruing	8,848	1,899
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	2,519,089	2,438,574
90 Days or More Past Due and Accruing	4,489	2,602
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	212,107	229,561
90 Days or More Past Due and Accruing	488	546
Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,190,453	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	6,015,818	5,509,583
90 Days or More Past Due and Accruing	8,848	1,899
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,717,369	1,670,659
90 Days or More Past Due and Accruing	5,339	3,184
Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	30,421	26,808
Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	12,376,076	11,588,278
Loans held for sale, current	22,127	16,354
Current [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	784,848	724,293
Current [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	7,177,813	6,546,811
Current [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	2,505,489	2,429,200
Current [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	207,072	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	1,190,453	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	5,987,360	5,490,946
Current [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,700,854	1,663,985
Current [Member] | Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	9,256	9,138
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	19,196	15,152
30-59 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	6,036	4,691
30-59 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	6,053	4,416
30-59 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,471	1,572
30-59 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	3,153	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	6,053	4,416
30-59 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	2,483	640
30-59 Days Past Due [Member] | Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,901	1,300
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	17,472	9,729
60-89 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,239	1,198
60-89 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	4,759	3,627
60-89 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	3,158	2,471
60-89 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,319	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	4,759	3,627
60-89 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	6,997	1,255
60-89 Days Past Due [Member] | Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	1,005	706
90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	38,686	25,302
90 Days or More Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	4,471	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	17,646	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	8,971	5,331
90 Days or More Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	563	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	17,646	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	7,035	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	18,259	15,664
Total Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	75,354	50,183
Total Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	11,746	9,926
Total Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	28,458	18,637
Total Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	13,600	9,374
Total Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	5,035	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	28,458	18,637
Total Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	16,515	6,674
Total Past Due [Member] | Non-Accrual Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Portfolio loans, net of unearned income	$ 21,165	$ 17,670

Loans and the Allowance for _11

Loans and the Allowance for Credit Losses - Summary of Nonperforming Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing Receivable, Impaired [Line Items]
Total impaired loans, Recorded investment	$ 30,421		$ 30,421		$ 26,808
Nonperforming Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	39,273		39,273		35,493
Recorded Investment, With no specific allowance recorded	30,421		30,421		26,808
Total impaired loans, Unpaid principal balance	39,273		39,273		35,493
Total impaired loans, Recorded investment	30,421		30,421		26,808
Average recorded investment, with no related specific allowance	32,945	$ 30,717	31,406	$ 35,517
Total impaired loans, Average recorded investment	32,945	30,717	31,406	35,517
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Total impaired loans, Recorded investment	11,227		11,227		9,557
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Total impaired loans, Recorded investment	11,274		11,274		10,582
Residential Real Estate [Member] | Nonperforming Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	15,885		15,885		15,128
Recorded Investment, With no specific allowance recorded	11,274		11,274		10,582
Average recorded investment, with no related specific allowance	11,140	11,832	11,135	13,139
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Total impaired loans, Recorded investment	118		118		51
Consumer [Member] | Nonperforming Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	192		192		104
Recorded Investment, With no specific allowance recorded	118		118		51
Average recorded investment, with no related specific allowance	91	107	77	121
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Total impaired loans, Recorded investment	5,531		5,531		4,777
Home Equity [Member] | Nonperforming Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	7,576		7,576		6,521
Recorded Investment, With no specific allowance recorded	5,531		5,531		4,777
Average recorded investment, with no related specific allowance	5,466	5,292	5,095	5,205
Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member] | Nonperforming Loans [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment, with no related specific allowance	92		99	28
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Total impaired loans, Recorded investment	11,227		11,227		9,557
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member] | Nonperforming Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	12,721		12,721		11,248
Recorded Investment, With no specific allowance recorded	11,227		11,227		9,557
Average recorded investment, with no related specific allowance	13,992	11,243	12,766	14,322
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Total impaired loans, Recorded investment	2,271		2,271		1,841
Commercial and Industrial [Member] | Nonperforming Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, With no specific allowance recorded	2,899		2,899		2,492
Recorded Investment, With no specific allowance recorded	2,271		2,271		$ 1,841
Average recorded investment, with no related specific allowance	$ 2,165	$ 2,244	$ 2,234	$ 2,702

Loans and the Allowance for _12

Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Impaired [Line Items]
Non-accrual loans	$ 30,421	$ 26,808
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	2,271	1,841
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	5,531	4,777
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	11,227	9,557
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	11,227	9,557
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	11,274	10,582
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	$ 118	$ 51

Loans and the Allowance for _13

Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans (Parenthetical) (Detail)	Sep. 30, 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	$ 8,200,000	$ 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) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Modified [Line Items]
Modification loans	$ 23,995	$ 966	$ 50,019	$ 18,457
Percentage of total by loan category	0.20%		0.40%	0.20%
Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 1,870	295	$ 26,629	$ 16,471
Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modification loans	22,125	671	23,390	1,986
Home Equity [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 638	258	$ 1,023	$ 944
Percentage of total by loan category	0.10%		0.10%	0.10%
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	$ 638	258	$ 1,023	936
Residential Real Estate [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 1,273	126	$ 1,990	226
Percentage of total by loan category	0.10%		0.10%
Residential Real Estate [Member] | Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 1,273	126	$ 1,990	226
Consumer [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 182	$ 244	$ 345	$ 505
Percentage of total by loan category	0.10%	0.10%	0.20%	0.20%
Consumer [Member] | Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 182	$ 244	$ 345	$ 505
Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified [Line Items]
Modification loans			5	173
Commercial Real Estate - Land and Construction [Member] | Commercial Real Estate [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modification loans			5	173
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 20,448	159	$ 44,784	$ 7,290
Percentage of total by loan category	0.30%		0.70%	0.10%
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 666	159	$ 25,002	$ 7,014
Commercial Real Estate - Improved Property [Member] | Commercial Real Estate [Member] | Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modification loans	19,782		19,782	276
Commercial and Industrial [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 1,454	179	$ 1,872	$ 9,319
Percentage of total by loan category	0.10%		0.10%	0.60%
Commercial and Industrial [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 1,204	136	$ 1,622	$ 9,276
Commercial and Industrial [Member] | Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Modification loans	$ 250	$ 43	$ 250	$ 43

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)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 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)	16 months	3 months	22 months	9 months
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Modified [Line Items]
Weighted-average term extension (in months)			24 months	12 months
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified [Line Items]
Weighted-average term extension (in months)	7 months	3 months	9 months	22 months

Loans and the Allowance for _16

Loans and the Allowance for Credit Losses - Summary of Loans with MBEFDs (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024
Financing Receivable, Modified [Line Items]
Loans that subsequently defaulted	$ 382	$ 722
Term Extension [Member]
Financing Receivable, Modified [Line Items]
Loans that subsequently defaulted	34	202
Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Loans that subsequently defaulted	348	520
Commercial and Industrial [Member]
Financing Receivable, Modified [Line Items]
Loans that subsequently defaulted	34	202
Commercial and Industrial [Member] | Term Extension [Member]
Financing Receivable, Modified [Line Items]
Loans that subsequently defaulted	34	202
Home Equity [Member]
Financing Receivable, Modified [Line Items]
Loans that subsequently defaulted	175	175
Home Equity [Member] | Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Loans that subsequently defaulted	175	175
Residential Real Estate [Member]
Financing Receivable, Modified [Line Items]
Loans that subsequently defaulted	137	276
Residential Real Estate [Member] | Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Loans that subsequently defaulted	137	276
Consumer [Member]
Financing Receivable, Modified [Line Items]
Loans that subsequently defaulted	36	69
Consumer [Member] | Payment Delay [Member]
Financing Receivable, Modified [Line Items]
Loans that subsequently defaulted	$ 36	$ 69

Loans and the Allowance for _17

Loans and the Allowance for Credit Losses - Summary of Aging Analysis of Portfolio Loans Restructured (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	$ 12,451,430	$ 11,638,461
Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	51,216		$ 18,457
Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	796,594	734,219
Home Equity [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,297		944
Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,717,369	1,670,659
Commercial and Industrial [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,871		9,319
Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	7,206,271	6,565,448
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,190,453	1,055,865
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	5		173
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	6,015,818	5,509,583
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	45,006		7,290
Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,519,089	2,438,574
Residential Real Estate [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,646		226
Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	212,107	229,561
Consumer [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	391		505
30-59 Days Past Due [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	19,196	15,152
30-59 Days Past Due [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	342		119
30-59 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	6,036	4,691
30-59 Days Past Due [Member] | Home Equity [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	64		46
30-59 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,483	640
30-59 Days Past Due [Member] | Commercial and Industrial [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	250
30-59 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	6,053	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	6,053	4,416
30-59 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,471	1,572
30-59 Days Past Due [Member] | Residential Real Estate [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan			67
30-59 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	3,153	3,833
30-59 Days Past Due [Member] | Consumer [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	28		6
60-89 Days Past Due [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	17,472	9,729
60-89 Days Past Due [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	3,457		168
60-89 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,239	1,198
60-89 Days Past Due [Member] | Home Equity [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan			24
60-89 Days Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	6,997	1,255
60-89 Days Past Due [Member] | Commercial and Industrial [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan			43
60-89 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	4,759	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	4,759	3,627
60-89 Days Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	3,433		33
60-89 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	3,158	2,471
60-89 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,319	1,178
60-89 Days Past Due [Member] | Consumer [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	24		68
90 Days or More Past Due [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	38,686	25,302
90 Days or More Past Due [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	570		439
90 Days or More Past Due [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	4,471	4,037
90 Days or More Past Due [Member] | Home Equity [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	309		101
90 Days or More Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	7,035	4,779
90 Days or More Past Due [Member] | Commercial and Industrial [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	34
90 Days or More Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	17,646	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	17,646	10,594
90 Days or More Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan			276
90 Days or More Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	8,971	5,331
90 Days or More Past Due [Member] | Residential Real Estate [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	161
90 Days or More Past Due [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	563	561
90 Days or More Past Due [Member] | Consumer [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	66		62
Total Past Due [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	75,354	50,183
Total Past Due [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	4,369		726
Total Past Due [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	11,746	9,926
Total Past Due [Member] | Home Equity [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	373		171
Total Past Due [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	16,515	6,674
Total Past Due [Member] | Commercial and Industrial [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	284		43
Total Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	28,458	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	28,458	18,637
Total Past Due [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	3,433		309
Total Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	13,600	9,374
Total Past Due [Member] | Residential Real Estate [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	161		67
Total Past Due [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	5,035	5,572
Total Past Due [Member] | Consumer [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	118		136
Current [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	12,376,076	11,588,278
Current [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	46,847		17,731
Current [Member] | Home Equity [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	784,848	724,293
Current [Member] | Home Equity [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	924		773
Current [Member] | Commercial and Industrial [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,700,854	1,663,985
Current [Member] | Commercial and Industrial [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	1,587		9,276
Current [Member] | Commercial Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	7,177,813	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	1,190,453	1,055,865
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	5		173
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	5,987,360	5,490,946
Current [Member] | Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	41,573		6,981
Current [Member] | Residential Real Estate [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,505,489	2,429,200
Current [Member] | Residential Real Estate [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	2,485		159
Current [Member] | Consumer [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	207,072	$ 223,989
Current [Member] | Consumer [Member] | Loan Modification [Member]
Financing Receivable, Modified, Past Due [Line Items]
Total modified loan	$ 273		$ 369

Loans and the Allowance for _18

Loans and the Allowance for Credit Losses - Loans Identified as TDRs (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	$ 23,995	$ 966	$ 50,019	$ 18,457
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	1,454	179	1,872	9,319
Commercial Real Estate [Member] | Commercial Real Estate - Land and Construction [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment			5	173
Commercial Real Estate [Member] | Commercial Real Estate - Improved Property [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	20,448	159	44,784	7,290
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	1,273	126	1,990	226
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment	$ 182	$ 244	$ 345	$ 505

Loans and the Allowance for _19

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	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 12,451,430	$ 11,638,461
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	19,196	15,152
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	17,472	9,729
90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	38,686	25,302
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	11,347	12,828
Amortized Cost Basis by Origination Year 2023	2,670	1,959
Amortized Cost Basis by Origination Year 2022	3,653	1,568
Amortized Cost Basis by Origination Year 2021	1,299	2,449
Amortized Cost Basis by Origination Year 2020	2,953	1,964
Amortized Cost Basis by Origination Year, Prior to 2019	25,109	26,482
Revolving Loans	748,057	685,163
Revolving Loans Converted to Term	1,506	1,806
Total loans	796,594	734,219
Home Equity [Member] | Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	11,347	12,675
Amortized Cost Basis by Origination Year 2023	1,432	1,235
Amortized Cost Basis by Origination Year 2022	2,090	1,467
Amortized Cost Basis by Origination Year 2021	976	1,571
Amortized Cost Basis by Origination Year 2020	2,584	1,614
Amortized Cost Basis by Origination Year, Prior to 2019	20,996	22,484
Revolving Loans	744,251	681,848
Revolving Loans Converted to Term	1,172	1,399
Total loans	784,848	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	289	193
Amortized Cost Basis by Origination Year 2022	780	85
Amortized Cost Basis by Origination Year 2021	15	73
Amortized Cost Basis by Origination Year 2020	32	44
Amortized Cost Basis by Origination Year, Prior to 2019	1,299	947
Revolving Loans	3,621	3,315
Total loans	6,036	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	131	318
Amortized Cost Basis by Origination Year 2022	232	16
Amortized Cost Basis by Origination Year 2021	80	68
Amortized Cost Basis by Origination Year 2020		76
Amortized Cost Basis by Origination Year, Prior to 2019	748	524
Revolving Loans Converted to Term	48	77
Total loans	1,239	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	818	213
Amortized Cost Basis by Origination Year 2022	551
Amortized Cost Basis by Origination Year 2021	228	737
Amortized Cost Basis by Origination Year 2020	337	230
Amortized Cost Basis by Origination Year, Prior to 2019	2,066	2,527
Revolving Loans	185
Revolving Loans Converted to Term	286	330
Total loans	4,471	4,037
Home Equity [Member] | Current-period gross charge-offs [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2023	316	139
Amortized Cost Basis by Origination Year 2022	105	57
Amortized Cost Basis by Origination Year 2021	65	29
Amortized Cost Basis by Origination Year 2020	35	79
Amortized Cost Basis by Origination Year, Prior to 2019	197	615
Revolving Loans	28	6
Revolving Loans Converted to Term	49
Total loans	795	925
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,206,271	6,565,448
Commercial Real Estate [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,053	4,416
Commercial Real Estate [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,759	3,627
Commercial Real Estate [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	17,646	10,594
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	155,617	277,790
Amortized Cost Basis by Origination Year 2023	266,134	430,634
Amortized Cost Basis by Origination Year 2022	364,447	445,356
Amortized Cost Basis by Origination Year 2021	408,687	185,480
Amortized Cost Basis by Origination Year 2020	172,812	86,412
Amortized Cost Basis by Origination Year, Prior to 2019	498,405	464,727
Revolving Loans Converted to Term	652,987	548,175
Total loans	2,519,089	2,438,574
Residential Real Estate [Member] | Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	155,617	277,790
Amortized Cost Basis by Origination Year 2023	265,992	429,835
Amortized Cost Basis by Origination Year 2022	363,598	445,322
Amortized Cost Basis by Origination Year 2021	408,559	185,139
Amortized Cost Basis by Origination Year 2020	172,607	86,149
Amortized Cost Basis by Origination Year, Prior to 2019	488,396	456,818
Revolving Loans Converted to Term	650,720	548,147
Total loans	2,505,489	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, Prior to 2019	1,471	1,572
Total loans	1,471	1,572
Residential Real Estate [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2023	142
Amortized Cost Basis by Origination Year 2021		341
Amortized Cost Basis by Origination Year 2020	205
Amortized Cost Basis by Origination Year, Prior to 2019	2,811	2,130
Total loans	3,158	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	849	34
Amortized Cost Basis by Origination Year 2021	128
Amortized Cost Basis by Origination Year 2020		263
Amortized Cost Basis by Origination Year, Prior to 2019	5,727	4,207
Revolving Loans Converted to Term	2,267	28
Total loans	8,971	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	226	387
Revolving Loans Converted to Term	58
Total loans	284	392
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	45,377	85,480
Amortized Cost Basis by Origination Year 2023	63,730	60,006
Amortized Cost Basis by Origination Year 2022	43,674	22,853
Amortized Cost Basis by Origination Year 2021	14,751	13,707
Amortized Cost Basis by Origination Year 2020	7,481	11,134
Amortized Cost Basis by Origination Year, Prior to 2019	12,061	12,429
Revolving Loans	25,033	23,948
Revolving Loans Converted to Term		4
Total loans	212,107	229,561
Consumer [Member] | Current [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	44,653	84,526
Amortized Cost Basis by Origination Year 2023	62,137	57,661
Amortized Cost Basis by Origination Year 2022	42,197	21,592
Amortized Cost Basis by Origination Year 2021	14,117	13,189
Amortized Cost Basis by Origination Year 2020	7,233	10,958
Amortized Cost Basis by Origination Year, Prior to 2019	11,745	12,143
Revolving Loans	24,990	23,916
Revolving Loans Converted to Term		4
Total loans	207,072	223,989
Consumer [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	361	699
Amortized Cost Basis by Origination Year 2023	1,070	1,526
Amortized Cost Basis by Origination Year 2022	907	952
Amortized Cost Basis by Origination Year 2021	474	343
Amortized Cost Basis by Origination Year 2020	174	162
Amortized Cost Basis by Origination Year, Prior to 2019	124	119
Revolving Loans	43	32
Total loans	3,153	3,833
Consumer [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	296	191
Amortized Cost Basis by Origination Year 2023	429	616
Amortized Cost Basis by Origination Year 2022	326	195
Amortized Cost Basis by Origination Year 2021	129	112
Amortized Cost Basis by Origination Year 2020	37	5
Amortized Cost Basis by Origination Year, Prior to 2019	102	59
Total loans	1,319	1,178
Consumer [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	67	64
Amortized Cost Basis by Origination Year 2023	94	203
Amortized Cost Basis by Origination Year 2022	244	114
Amortized Cost Basis by Origination Year 2021	31	63
Amortized Cost Basis by Origination Year 2020	37	9
Amortized Cost Basis by Origination Year, Prior to 2019	90	108
Total loans	563	561
Consumer [Member] | Current-period gross charge-offs [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	104	251
Amortized Cost Basis by Origination Year 2023	1,193	1,921
Amortized Cost Basis by Origination Year 2022	1,174	901
Amortized Cost Basis by Origination Year 2021	411	301
Amortized Cost Basis by Origination Year 2020	144	100
Amortized Cost Basis by Origination Year, Prior to 2019	244	247
Revolving Loans		4
Total loans	3,270	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	152,765	290,954
Amortized Cost Basis by Origination Year 2023	395,639	349,549
Amortized Cost Basis by Origination Year 2022	345,067	145,043
Amortized Cost Basis by Origination Year 2021	92,995	54,172
Amortized Cost Basis by Origination Year 2020	21,618	48,655
Amortized Cost Basis by Origination Year, Prior to 2019	53,662	35,942
Revolving Loans	78,277	82,587
Revolving Loans Converted to Term	50,430	48,963
Total loans	1,190,453	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	151,329	290,954
Amortized Cost Basis by Origination Year 2023	395,639	349,549
Amortized Cost Basis by Origination Year 2022	343,952	145,043
Amortized Cost Basis by Origination Year 2021	92,995	54,172
Amortized Cost Basis by Origination Year 2020	21,618	48,655
Amortized Cost Basis by Origination Year, Prior to 2019	53,644	35,917
Revolving Loans	77,916	82,288
Revolving Loans Converted to Term	49,294	46,781
Total loans	1,186,387	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 2024	1,436
Amortized Cost Basis by Origination Year 2022	1,115
Amortized Cost Basis by Origination Year, Prior to 2019	12	16
Revolving Loans	361	299
Revolving Loans Converted to Term	651	2,182
Total loans	3,575	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, Prior to 2019	6	9
Revolving Loans Converted to Term	485
Total loans	491	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	75	372
Amortized Cost Basis by Origination Year, Prior to 2019	854	1,505
Total loans	929	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	409,989	496,063
Amortized Cost Basis by Origination Year 2023	593,236	1,093,322
Amortized Cost Basis by Origination Year 2022	1,173,677	612,401
Amortized Cost Basis by Origination Year 2021	589,465	588,343
Amortized Cost Basis by Origination Year 2020	593,403	543,180
Amortized Cost Basis by Origination Year, Prior to 2019	2,069,395	1,787,604
Revolving Loans	197,841	105,840
Revolving Loans Converted to Term	388,812	282,830
Total loans	6,015,818	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	6,053	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	4,759	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	17,646	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	386,541	494,142
Amortized Cost Basis by Origination Year 2023	573,034	1,076,535
Amortized Cost Basis by Origination Year 2022	1,154,357	603,354
Amortized Cost Basis by Origination Year 2021	578,734	581,540
Amortized Cost Basis by Origination Year 2020	587,340	514,523
Amortized Cost Basis by Origination Year, Prior to 2019	1,979,742	1,706,804
Revolving Loans	196,011	103,467
Revolving Loans Converted to Term	359,177	257,029
Total loans	5,814,936	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 2024	3,666
Amortized Cost Basis by Origination Year 2023	18,354	16,270
Amortized Cost Basis by Origination Year 2022	13,654	8,630
Amortized Cost Basis by Origination Year 2021	10,324	4,387
Amortized Cost Basis by Origination Year 2020	3,750	5,185
Amortized Cost Basis by Origination Year, Prior to 2019	34,578	44,861
Revolving Loans	1,209	2,373
Revolving Loans Converted to Term	29,582	25,767
Total loans	115,117	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	19,782	1,921
Amortized Cost Basis by Origination Year 2023	1,848	517
Amortized Cost Basis by Origination Year 2022	5,666	417
Amortized Cost Basis by Origination Year 2021	407	2,416
Amortized Cost Basis by Origination Year 2020	2,313	23,472
Amortized Cost Basis by Origination Year, Prior to 2019	55,075	35,939
Revolving Loans	621
Revolving Loans Converted to Term	53	34
Total loans	85,765	64,716
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	192,600	239,554
Amortized Cost Basis by Origination Year 2023	191,610	235,503
Amortized Cost Basis by Origination Year 2022	212,966	140,482
Amortized Cost Basis by Origination Year 2021	120,105	80,591
Amortized Cost Basis by Origination Year 2020	53,030	47,418
Amortized Cost Basis by Origination Year, Prior to 2019	274,411	286,268
Revolving Loans	604,904	567,823
Revolving Loans Converted to Term	67,743	73,020
Total loans	1,717,369	1,670,659
Commercial and Industrial [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,483	640
Commercial and Industrial [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,997	1,255
Commercial and Industrial [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,035	4,779
Commercial and Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	190,160	238,427
Amortized Cost Basis by Origination Year 2023	182,255	234,520
Amortized Cost Basis by Origination Year 2022	208,230	136,998
Amortized Cost Basis by Origination Year 2021	117,099	78,836
Amortized Cost Basis by Origination Year 2020	51,255	39,259
Amortized Cost Basis by Origination Year, Prior to 2019	248,315	252,826
Revolving Loans	579,330	541,400
Revolving Loans Converted to Term	51,948	64,417
Total loans	1,628,592	1,586,683
Commercial and Industrial [Member] | Criticized [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	279	1,094
Amortized Cost Basis by Origination Year 2023	9,232	834
Amortized Cost Basis by Origination Year 2022	4,193	3,169
Amortized Cost Basis by Origination Year 2021	2,057	1,490
Amortized Cost Basis by Origination Year 2020	1,720	7,334
Amortized Cost Basis by Origination Year, Prior to 2019	25,037	31,526
Revolving Loans	24,673	20,626
Revolving Loans Converted to Term	14,657	7,131
Total loans	81,848	73,204
Commercial and Industrial [Member] | Classified - substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Amortized Cost Basis by Origination Year 2024	2,161	33
Amortized Cost Basis by Origination Year 2023	123	149
Amortized Cost Basis by Origination Year 2022	543	315
Amortized Cost Basis by Origination Year 2021	949	265
Amortized Cost Basis by Origination Year 2020	55	825
Amortized Cost Basis by Origination Year, Prior to 2019	1,059	1,916
Revolving Loans	901	5,797
Revolving Loans Converted to Term	1,138	1,472
Total loans	6,929	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	48	98
Amortized Cost Basis by Origination Year 2023	567	205
Amortized Cost Basis by Origination Year 2022	717	603
Amortized Cost Basis by Origination Year 2021	228	353
Amortized Cost Basis by Origination Year 2020	148	20
Amortized Cost Basis by Origination Year, Prior to 2019	407	463
Revolving Loans	1
Revolving Loans Converted to Term	4,628	541
Total loans	$ 6,744	$ 2,283

Loans and the Allowance for _20

Loans and the Allowance for Credit Losses - Summary of Other Real Estate Owned and Repossessed Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Receivables [Abstract]
Other real estate owned	$ 670	$ 1,207
Repossessed assets	236	290
Total other real estate owned and repossessed assets	$ 906	$ 1,497

Investments In Limited Partne_3

Investments In Limited Partnerships - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) Partnership	Sep. 30, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Schedule of Investments [Line Items]
Unfunded equity commitments in other liabilities	$ 15,712,584		$ 15,712,584			$ 15,179,312
Partnerships losses and impairment	1,200	$ 1,100	$ 3,500	$ 3,200
Number of limited partnerships held | Partnership			3
Equity Method Investments [Member]
Schedule of Investments [Line Items]
Income tax credits and adjustments					$ 4,500	3,800
Limited Liability Company [Member]
Schedule of Investments [Line Items]
Amount invested in partnerships	2,900		$ 2,900			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	5	$ (23)	(5)	$ (18)
Variable Interest Entity, Not Primary Beneficiary [Member]
Schedule of Investments [Line Items]
Unfunded equity commitments in other liabilities	15,200		15,200			13,900
Variable Interest Entity, Not Primary Beneficiary [Member] | Other Assets [Member]
Schedule of Investments [Line Items]
Amount invested in partnerships	$ 34,400		$ 34,400			$ 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	Sep. 30, 2024 USD ($)
Schedule of Investments [Line Items]
2024	$ 3,673
2025	5,085
2026	3,148
2027	950
2028	588
2029 and thereafter	1,726
Total	$ 15,170

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) Derivative	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) Derivative	Sep. 30, 2023 USD ($)	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	$ 8,600,000		$ 8,600,000		$ 26,000,000
Interest Rate Swaps and Caps [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of interest rate swaps | Derivative	282		282		236
Aggregate notional amount	$ 1,900,000,000		$ 1,900,000,000		$ 1,600,000,000
Income (loss) on derivative instrument not designated hedges	$ 1,100,000	$ 2,500,000	$ 3,600,000	$ 6,800,000
Risk Participation in Agreements [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of interest rate swaps | Derivative	24		24		19
Aggregate notional amount	$ 230,600,000		$ 230,600,000		$ 197,200,000
Risk Participation out Agreement [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of interest rate swaps | Derivative	8		8		5
Aggregate notional amount	$ 67,900,000		$ 67,900,000		$ 40,900,000
Other Contract [Member] | Forward TBA Contracts [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Aggregate notional amount	$ 41,500,000		$ 41,500,000		$ 27,000,000

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Summary of Fair Values of Derivative Instruments on Balance Sheets (Detail) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 66,910,000	$ 72,267,000
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets	Other Assets
Liability Derivatives	$ 68,908,000	$ 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	$ 1,873,665,000	$ 1,573,152,000
Asset Derivatives	66,910,000	72,183,000
Liability Derivatives	68,708,000	73,083,000
Interest Rate Lock Commitments [Member] | Other Contract [Member]
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	33,968,000	16,524,000
Asset Derivatives		84,000
Liability Derivatives	40,000
Forward TBA Contracts [Member] | Other Contract [Member]
Derivatives, Fair Value [Line Items]
Notional or Contractual Amount	41,500,000	27,000,000
Liability Derivatives	$ 160,000	$ 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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivatives, Fair Value [Line Items]
Total gain (loss) on derivative financial instruments	$ (2,331)	$ 1,868	$ (1,545)	$ 1,325
Interest Rate Swaps and Caps [Member]
Derivatives, Fair Value [Line Items]
Total gain (loss) on derivative financial instruments	$ (1,702)	$ 1,352	$ (895)	$ 489
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Net Swap Fee and Valuation Income (Loss)	Net Swap Fee and Valuation Income (Loss)	Net Swap Fee and Valuation Income (Loss)	Net Swap Fee and Valuation Income (Loss)
Interest Rate Lock Commitments [Member]
Derivatives, Fair Value [Line Items]
Total gain (loss) on derivative financial instruments	$ (8)	$ 94	$ (124)	$ (34)
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	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	$ (621)	$ 422	$ (526)	$ 870
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	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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Retirement Benefits [Abstract]
Service cost – benefits earned during year	$ 334	$ 357	$ 994	$ 1,061
Interest cost on projected benefit obligation	1,620	1,589	4,826	4,715
Expected return on plan assets	$ (2,627)	$ (2,811)	$ (7,825)	$ (8,342)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Employee Benefits	Employee Benefits	Employee Benefits	Employee Benefits
Amortization of prior service cost	$ (9)	$ (9)	$ (26)	$ (27)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Employee Benefits	Employee Benefits	Employee Benefits	Employee Benefits
Amortization of net loss	$ 21	$ 227	$ 63	$ 675
Net periodic pension income	$ (661)	$ (647)	$ (1,968)	$ (1,918)

Benefit Plans - Additional Info

Benefit Plans - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Retirement Benefits [Abstract]
Service cost	$ 334,000	$ 357,000	$ 994,000	$ 1,061,000
Periodic pension income			3,000,000	$ 3,000,000
Minimum required pension plan contribution	2,600,000		2,600,000
Available credit balance	$ 64,200,000		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	Sep. 30, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	$ 13,355	$ 12,320
Available-for-sale debt securities	2,228,527	2,194,329
Loans held for sale	22,127	16,354
Other real estate owned and repossessed assets	906	1,497
Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	13,355	12,320
Available-for-sale debt securities	2,228,527	2,194,329
Loans held for sale	22,127	16,354
Other assets - interest rate swaps	66,910	72,183
Total assets	2,330,919	2,295,186
Other liabilities - interest rate swaps	68,708	73,083
Total liabilities recurring fair value measurements	68,708	73,083
Nonrecurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent loans	21,259	18,273
Other real estate owned and repossessed assets	906	1,497
Total assets	22,165	19,770
U.S. Treasury [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	97,661
U.S. Treasury [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	97,661
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	203,447	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	203,447	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	1,595,045	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	1,595,045	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	248,626	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	248,626	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	71,794	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	71,794	76,125
Corporate Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	11,954	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	11,954	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	13,355	12,320
Available-for-sale debt securities	97,661
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	13,355	12,320
Available-for-sale debt securities	97,661
Total assets	111,016	12,320
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Treasury [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities	97,661
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	2,129,746	2,193,162
Loans held for sale	22,127	16,354
Other assets - interest rate swaps	66,910	72,183
Other liabilities - interest rate swaps	68,708	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	2,129,746	2,193,162
Loans held for sale	22,127	16,354
Other assets - interest rate swaps	66,910	72,183
Total assets	2,218,783	2,281,699
Other liabilities - interest rate swaps	68,708	73,083
Total liabilities recurring fair value measurements	68,708	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	203,447	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	1,595,045	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	248,626	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	70,674	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	11,954	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	1,120	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	1,120	1,167
Total assets	1,120	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	21,259	18,273
Other real estate owned and repossessed assets	906	1,497
Total assets	22,165	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	$ 1,120	$ 1,167

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Fair value transfer amount	$ 0	$ 0	$ 0

Fair Value Measurement - Sche_2

Fair Value Measurement - Schedule of Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Fair Value Inputs Asset Quantitative Information [Line Items]
Other real estate owned and repossessed assets	$ 906	$ 1,497
Fair Value, Measurements, Nonrecurring [Member]
Fair Value Inputs Asset Quantitative Information [Line Items]
Collateral dependent loans	21,259	18,273
Other real estate owned and repossessed assets	906	1,497
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Inputs Asset Quantitative Information [Line Items]
Collateral dependent loans	21,259	18,273
Other real estate owned and repossessed assets	$ 906	$ 1,497
Collateral dependent loans, Appraisal adjustments	0%	0%
Collateral dependent loans, Liquidation expenses		(8.00%)
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Minimum [Member]
Fair Value Inputs Asset Quantitative Information [Line Items]
Collateral dependent loans, Liquidation expenses	(7.50%)
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Maximum [Member]
Fair Value Inputs Asset Quantitative Information [Line Items]
Collateral dependent loans, Liquidation expenses	(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	(7.90%)	(8.00%)

Fair Value Measurement - Estima

Fair Value Measurement - Estimates Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financial Assets
Cash and due from banks	$ 620,897	$ 595,383
Equity securities	13,355	12,320
Available-for-sale debt securities	2,228,527	2,194,329
Net held-to-maturity debt securities	1,162,359	1,199,527
Net loans	12,310,558	11,507,786
Loans held for sale	22,127	16,354
Accrued interest receivable	79,465	77,435
Financial Liabilities
Deposits	13,837,343	13,168,704
Federal Home Loan Bank borrowings	1,175,000	1,350,000
Other borrowings	140,641	105,893
Subordinated debt and junior subordinated debt	279,251	279,078
Accrued interest payable	16,406	11,121
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial Assets
Cash and due from banks	620,897	595,383
Equity securities	13,355	12,320
Available-for-sale debt securities	97,661
Accrued interest receivable	79,465	77,435
Financial Liabilities
Deposits	12,173,849	11,937,002
Other borrowings	140,492	103,057
Accrued interest payable	16,406	11,121
Significant Other Observable Inputs (Level 2) [Member]
Financial Assets
Available-for-sale debt securities	2,129,746	2,193,162
Net held-to-maturity debt securities	1,052,549	1,068,896
Loans held for sale	22,127	16,354
Other assets - interest rate derivatives	66,910	72,183
Financial Liabilities
Deposits	1,653,221	1,209,819
Federal Home Loan Bank borrowings	1,176,840	1,349,217
Subordinated debt and junior subordinated debt	232,112	240,898
Other liabilities - interest rate derivatives	68,708	73,083
Significant Unobservable Inputs (Level 3) [Member]
Financial Assets
Available-for-sale debt securities	1,120	1,167
Net held-to-maturity debt securities	232	263
Net loans	12,018,968	11,134,250
Carrying Amount [Member]
Financial Assets
Cash and due from banks	620,897	595,383
Equity securities	13,355	12,320
Available-for-sale debt securities	2,228,527	2,194,329
Net held-to-maturity debt securities	1,162,211	1,199,335
Net loans	12,310,558	11,507,786
Loans held for sale	22,127	16,354
Other assets - interest rate derivatives	66,910	72,183
Accrued interest receivable	79,465	77,435
Financial Liabilities
Deposits	13,837,343	13,168,704
Federal Home Loan Bank borrowings	1,175,000	1,350,000
Other borrowings	140,641	105,893
Subordinated debt and junior subordinated debt	279,251	279,078
Other liabilities - interest rate derivatives	68,708	73,083
Accrued interest payable	16,406	11,121
Fair Value Estimate [Member]
Financial Assets
Cash and due from banks	620,897	595,383
Equity securities	13,355	12,320
Available-for-sale debt securities	2,228,527	2,194,329
Net held-to-maturity debt securities	1,052,781	1,069,159
Net loans	12,018,968	11,134,250
Loans held for sale	22,127	16,354
Other assets - interest rate derivatives	66,910	72,183
Accrued interest receivable	79,465	77,435
Financial Liabilities
Deposits	13,827,070	13,146,821
Federal Home Loan Bank borrowings	1,176,840	1,349,217
Other borrowings	140,492	103,057
Subordinated debt and junior subordinated debt	232,112	240,898
Other liabilities - interest rate derivatives	68,708	73,083
Accrued interest payable	$ 16,406	$ 11,121

Revenue Recognition - Summary o

Revenue Recognition - Summary of Revenue Recognition (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Schedule Of Revenue Recognition [Line Items]
Total net securities brokerage revenue	$ 2,659	$ 2,394	$ 7,808	$ 7,492
Digital banking income	5,084	4,949	14,828	14,564
Net swap fee and valuation (loss) income	(627)	3,845	2,712	7,257
Mortgage banking income	1,280	975	3,042	2,002
Net (loss) gain on other real estate owned and other assets	(239)	(28)	(51)	1,075
Total Service Charges on Deposits [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	7,945	6,726	21,841	19,128
Trust Account fees [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	5,467	4,751	$ 16,854	15,365
Point of revenue recognition			Over time
WesMark Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	2,050	1,954	$ 6,048	5,751
Point of revenue recognition			Over time
Total Trust Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	7,517	6,705	$ 22,902	21,116
Commercial Banking Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	1,358	756	$ 3,844	2,015
Point of revenue recognition			Over time
Personal Service Charges [Member]
Schedule Of Revenue Recognition [Line Items]
Total trust fees/Total service charges on deposits	6,587	5,970	$ 17,997	17,113
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	2,008	1,804	$ 5,958	5,689
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	81	54	$ 231	203
Point of revenue recognition			At a point in time
Managed Money [Member]
Schedule Of Revenue Recognition [Line Items]
Total net securities brokerage revenue	298	275	$ 824	842
Point of revenue recognition			Over time
Trail Commissions [Member]
Schedule Of Revenue Recognition [Line Items]
Total net securities brokerage revenue	272	261	$ 795	758
Point of revenue recognition			Over time
Payment Processing Fees [Member]
Schedule Of Revenue Recognition [Line Items]
Payment Processing Fees	$ 925	$ 939	$ 2,659	$ 2,761
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 (Loss) 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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 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	$ (1.7)	$ 1.4	$ (0.9)	$ 0.5

Comprehensive Income_(Loss) - C

Comprehensive Income/(Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 2,544,279	$ 2,464,998	$ 2,533,062	$ 2,426,662
Amounts reclassified from accumulated other comprehensive income/(loss)	(135)	128	(373)	399
Total other comprehensive income	53,404	(33,279)	44,889	(35,490)
Ending Balance	2,801,585	2,447,941	2,801,585	2,447,941
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			6,515	(535)
Other comprehensive income before reclassifications			0	0
Amounts reclassified from accumulated other comprehensive income/(loss)	(77)	76	(207)	226
Total other comprehensive income			(207)	226
Ending Balance	6,308	(309)	6,308	(309)
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 before reclassifications			45,262	(35,889)
Amounts reclassified from accumulated other comprehensive income/(loss)	(58)	52	(166)	173
Total other comprehensive income			45,096	(35,716)
Ending Balance	(188,112)	(297,597)	(188,112)	(297,597)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(235,208)	(264,627)	(226,693)	(262,416)
Other comprehensive income before reclassifications			45,262	(35,889)
Amounts reclassified from accumulated other comprehensive income/(loss)			(373)	399
Total other comprehensive income	53,404	(33,279)	44,889	(35,490)
Ending Balance	$ (181,804)	$ (297,906)	$ (181,804)	$ (297,906)

Comprehensive Income_(Loss) -_2

Comprehensive Income/(Loss) - Components of Accumulated Other Comprehensive Income (Parenthetical) (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Percentage of Federal and State income tax rate	24%	24%	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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net securities losses (gains) reclassified into earnings	$ (675)	$ 337	$ (1,347)	$ (13)
Provision for income taxes	7,501	7,453	21,296	26,458
Employee benefits (Non-interest expense)	11,522	11,922	34,284	35,492
Net effect on accumulated other comprehensive income/(loss) for the period	(135)	128	(373)	399
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	(58)	52	(166)	173
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	(77)	76	(207)	226
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	69	12	228
Provision for income taxes	(58)	(17)	(178)	(55)
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	24	(24)	97	(72)
Employee benefits (Non-interest expense)	$ (101)	$ 100	$ (304)	$ 298

Comprehensive Income_(Loss) -_3

Comprehensive Income/(Loss) - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income/(Loss) (Parenthetical) (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Percentage of Federal and State income tax rate	24%	24%	24%	24%

Commitments and Contingent Li_3

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 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	Sep. 30, 2024	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Lines of credit	$ 4,166,960	$ 4,016,658
Loans approved but not closed	289,531	275,954
Overdraft limits	396,953	391,598
Letters of credit	45,624	38,929
Contingent obligations and other guarantees	$ 22,577	$ 15,037

Business Segments - Additional

Business Segments - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($) Segment	Sep. 30, 2023 USD ($)
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	$ 6,100	$ 5,000
Total non-fiduciary assets of the trust and investment services segment	3.6	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

Business Segments - Financial I

Business Segments - Financial Information by Business Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Interest and dividend income	$ 213,729	$ 183,589	$ 612,055	$ 520,198
Interest expense	92,587	65,907	260,354	156,618
NET INTEREST INCOME	121,142	117,682	351,701	363,580
Provision for credit losses	4,798	6,327	19,352	12,932
Net interest income after provision for credit losses	116,344	111,355	332,349	350,648
Non-interest income	29,612	30,879	91,596	90,372
Non-interest expense	101,183	97,939	300,768	290,498
Income before provision for income taxes	44,773	44,295	123,177	150,522
Provision for income taxes	7,501	7,453	21,296	26,458
Net income	37,272	36,842	101,881	124,064
Preferred stock dividends	2,531	2,531	7,594	7,594
Net income available to common shareholders	34,741	34,311	94,287	116,470
Community Banking [Member]
Segment Reporting Information [Line Items]
Interest and dividend income	213,729	183,589	612,055	520,198
Interest expense	92,587	65,907	260,354	156,618
NET INTEREST INCOME	121,142	117,682	351,701	363,580
Provision for credit losses	4,798	6,327	19,352	12,932
Net interest income after provision for credit losses	116,344	111,355	332,349	350,648
Non-interest income	22,095	24,175	68,694	69,256
Non-interest expense	96,090	92,815	285,463	276,247
Income before provision for income taxes	42,349	42,715	115,580	143,657
Provision for income taxes	6,992	7,121	19,701	25,016
Net income	35,357	35,594	95,879	118,641
Preferred stock dividends	2,531	2,531	7,594	7,594
Net income available to common shareholders	32,826	33,063	88,285	111,047
Trust and Investment Services [Member]
Segment Reporting Information [Line Items]
Non-interest income	7,517	6,704	22,902	21,116
Non-interest expense	5,093	5,124	15,305	14,251
Income before provision for income taxes	2,424	1,580	7,597	6,865
Provision for income taxes	509	332	1,595	1,442
Net income	1,915	1,248	6,002	5,423
Net income available to common shareholders	$ 1,915	$ 1,248	$ 6,002	$ 5,423

Subsequent Events - Additional

Subsequent Events - Additional Information (Details)	Jul. 25, 2024
Premier Financial Corporation [Member] | Merger Agreement [Member]
Subsequent Event [Line Items]
Ratio for exchange of common stock for each share	0.8