United Bankshares (UBSI) 10-K 28 Feb 25 2024 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2024	Jan. 31, 2025	Jun. 30, 2024
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Fiscal Year Focus	2024
Document Period End Date	Dec. 31, 2024
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Registrant Name	UNITED BANKSHARES INC/WV
Entity Central Index Key	0000729986
Entity Current Reporting Status	Yes
Trading Symbol	UBSI
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		143,212,150
Entity Public Float			$ 4,185,635,034
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock
Entity File Number	002-86947
Security Exchange Name	NASDAQ
Entity Tax Identification Number	55-0641179
Entity Address, Address Line One	300 United Center
Entity Address, Address Line Two	500 Virginia Street, East
Entity Address, City or Town	Charleston
Entity Address, State or Province	WV
Entity Address, Postal Zip Code	25301
City Area Code	304
Local Phone Number	424-8716
Entity Incorporation, State or Country Code	WV
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
ICFR Auditor Attestation Flag	true
Auditor Firm ID	42
Auditor Name	Ernst & Young LLP
Auditor Location	Charleston, WV, USA
Document Financial Statement Error Correction [Flag]	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Assets
Cash and due from banks	$ 240,655,000	$ 257,153,000
Interest-bearing deposits with other banks	2,050,321,000	1,340,620,000
Federal funds sold	1,268,000	1,170,000
Total cash and cash equivalents	2,292,244,000	1,598,943,000
Securities available for sale at estimated fair value (amortized cost-$3,282,690 at December 31, 2024 and $4,149,895 at December 31, 2023, allowance for credit losses of $0 at December 31, 2024 and December 31, 2023)	2,959,719,000	3,786,377,000
Securities held to maturity, net of allowance for credit losses of $18 at December 31, 2024 and $17 at December 31, 2023 (estimated fair value-$1,020 at December 31, 2024 and December 31, 2023)	1,002,000	1,003,000
Equity securities at estimated fair value	21,058,000	8,945,000
Other investment securities	277,517,000	329,429,000
Loans held for sale measured using fair value option	44,360,000	56,261,000
Loans and leases	21,680,498,000	21,373,185,000
Less: Unearned income	(7,005,000)	(14,101,000)
Loans and leases, net of unearned income	21,673,493,000	21,359,084,000
Less: Allowance for loan and lease losses	(271,844,000)	(259,237,000)
Net loans and leases	21,401,649,000	21,099,847,000
Bank premises and equipment	186,131,000	190,520,000
Operating lease right-of-use assets	81,742,000	86,986,000
Goodwill	1,888,889,000	1,888,889,000
Mortgage servicing rights	0	4,554,000
Bank-owned life insurance ("BOLI")	497,181,000	486,895,000
Accrued interest receivable	102,412,000	111,420,000
Other assets	269,641,000	276,413,000
TOTAL ASSETS	30,023,545,000	29,926,482,000
Deposits:
Noninterest-bearing	6,135,413,000	6,149,080,000
Interest-bearing	17,826,446,000	16,670,239,000
Total deposits	23,961,859,000	22,819,319,000
Borrowings:
Securities sold under agreements to repurchase	176,090,000	196,095,000
Federal Home Loan Bank ("FHLB") borrowings	260,199,000	1,510,487,000
Other long-term borrowings	280,221,000	278,616,000
Reserve for lending-related commitments	34,911,000	44,706,000
Operating lease liabilities	86,771,000	92,885,000
Accrued expenses and other liabilities	230,271,000	213,134,000
TOTAL LIABILITIES	25,030,322,000	25,155,242,000
Shareholders' Equity
Preferred stock, $1.00 par value; Authorized-50,000,000 shares, none issued	0	0
Common stock, $2.50 par value; Authorized-200,000,000 shares; issued-142,694,816 and 142,257,646 at December 31, 2024 and December 31, 2023, respectively, including 7,348,188 and 7,308,583 shares in treasury at December 31, 2024 and December 31, 2023, respectively	356,737,000	355,644,000
Surplus	3,196,154,000	3,181,764,000
Retained earnings	1,917,726,000	1,745,619,000
Accumulated other comprehensive loss	(223,903,000)	(259,681,000)
Treasury stock, at cost	(253,491,000)	(252,106,000)
TOTAL SHAREHOLDERS' EQUITY	4,993,223,000	4,771,240,000
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 30,023,545,000	$ 29,926,482,000

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Securities available for sale, amortized cost	$ 3,282,690	$ 4,149,895
Securities held to maturity	$ 1,020	$ 1,020
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 2.5	$ 2.5
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	142,694,816	142,257,646
Common stock, shares in treasury	7,348,188	7,308,583
Allowance for credit losses on securities held for sale	$ 0	$ 0
Allowances for credit losses on securities held to maturity	$ 18	$ 17

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Interest income
Interest and fees on loans and leases	$ 1,302,604	$ 1,203,186	$ 864,583
Interest on federal funds sold and other short-term investments	66,207	47,069	22,950
Interest and dividends on securities:
Taxable	128,731	144,420	105,780
Tax-exempt	4,579	6,645	8,677
Total interest income	1,502,121	1,401,320	1,001,990
Interest expense
Interest on deposits	539,805	391,094	80,237
Interest on short-term borrowings	7,966	6,449	1,785
Interest on long-term borrowings	43,282	83,853	23,537
Total interest expense	591,053	481,396	105,559
Net interest income	911,068	919,924	896,431
Provision for credit losses	25,153	31,153	18,822
Net interest income after provision for credit losses	885,915	888,771	877,609
Other income
Income from bank-owned life insurance	11,225	8,330	9,188
Mortgage loan servicing income	8,958	13,746	9,235
Net investment securities (losses) gains	(7,720)	(7,646)	776
Other income	7,721	11,056	7,340
Total other income	123,695	135,258	153,261
Other expense
Employee compensation	234,618	230,809	242,408
Employee benefits	53,621	48,368	45,944
Net occupancy expense	46,084	46,426	45,129
Other real estate owned ("OREO") expense	576	1,355	2,138
Net (gains) losses on the sales of OREO properties	(75)	(60)	700
Equipment expense	29,686	29,731	29,320
Data processing expense	29,646	29,395	29,997
Mortgage loan servicing expense and impairment	2,694	5,596	7,099
Bankcard processing expense	2,490	2,192	1,938
FDIC insurance expense	19,735	30,376	11,988
Other expense	125,956	136,036	138,426
Total other expense	545,031	560,224	555,087
Income before income taxes	464,579	463,805	475,783
Income taxes	91,583	97,492	96,156
Net income	$ 372,996	$ 366,313	$ 379,627
Earnings per common share:
Basic	$ 2.76	$ 2.72	$ 2.81
Diluted	2.75	2.71	2.8
Dividends per common share	$ 1.48	$ 1.45	$ 1.44
Average outstanding shares:
Basic	134,947,592	134,505,058	134,776,241
Diluted	135,225,417	134,753,820	135,117,512
Fees from trust services [Member]
Other income
Revenue from contract	$ 19,450	$ 18,318	$ 17,216
Fees from brokerage services [Member]
Other income
Revenue from contract	20,277	16,911	16,412
Fees from deposit services [Member]
Other income
Revenue from contract	37,183	37,076	40,557
Bankcard fees and merchant discounts [Member]
Other income
Revenue from contract	7,059	7,013	6,580
Other service charges, commissions, and fees [Member]
Other income
Revenue from contract	3,485	3,861	3,267
Income from mortgage banking activities [Member]
Other income
Revenue from contract	$ 16,057	$ 26,593	$ 42,690

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 94,408	$ 95,267	$ 96,507	$ 86,814	$ 79,390	$ 96,157	$ 92,459	$ 98,307	$ 372,996	$ 366,313	$ 379,627
Other comprehensive income (loss) on available-for-sale ("AFS") securities, net of tax									30,855	81,521	(368,934)
Other comprehensive (loss) income on cash flow hedge, net of tax									(6,249)	(13,059)	36,655
Other comprehensive income on defined benefit pension plan, net of tax									11,172	4,589	4,435
Total Comprehensive income, net of tax									$ 408,774	$ 439,364	$ 51,783

Consolidated Statement of Chang

Consolidated Statement of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Treasury Stock [Member]
Beginning Balance at Dec. 31, 2021	$ 4,718,628	$ 353,402	$ 3,149,955	$ 1,390,777	$ (4,888)	$ (170,618)
Beginning Balance, shares at Dec. 31, 2021		141,360,266
Net income	379,627	$ 0	0	379,627	0	0
Other comprehensive income (loss), net of tax	(327,844)	0	0	0	(327,844)	0
Total Comprehensive income, net of tax	51,783
Stock based compensation expense	9,881	0	9,881	0	0	0
Purchase of treasury stock	(79,460)	0	0	0	0	(79,460)
Cash dividends	(194,978)	0	0	(194,978)	0	0
Stock grant forfeiture	0	$ 0	326	0	0	(326)
Stock grant forfeiture, shares		0
Net issuance of common stock under stock-based compensation plans	10,339	$ 1,627	8,712	0	0	0
Net issuance of common stock under stock-based compensation plans, shares		651,294
Ending Balance at Dec. 31, 2022	4,516,193	$ 355,029	3,168,874	1,575,426	(332,732)	(250,404)
Ending Balance, shares at Dec. 31, 2022		142,011,560
Net income	366,313	$ 0	0	366,313	0	0
Other comprehensive income (loss), net of tax	73,051	0	0	0	73,051	0
Total Comprehensive income, net of tax	439,364
Stock based compensation expense	12,463	0	12,463	0	0	0
Purchase of treasury stock	(1,382)	0	0	0	0	(1,382)
Cash dividends	(196,120)	0	0	(196,120)	0	0
Stock grant forfeiture	0	$ 0	320	0	0	(320)
Stock grant forfeiture, shares		0
Net issuance of common stock under stock-based compensation plans	722	$ 615	107	0	0	0
Net issuance of common stock under stock-based compensation plans, shares		246,086
Ending Balance at Dec. 31, 2023	4,771,240	$ 355,644	3,181,764	1,745,619	(259,681)	(252,106)
Ending Balance, shares at Dec. 31, 2023		142,257,646
Net income	372,996	$ 0	0	372,996	0	0
Other comprehensive income (loss), net of tax	35,778	0	0	0	35,778	0
Total Comprehensive income, net of tax	408,774
Stock based compensation expense	12,130	0	12,130	0	0	0
Purchase of treasury stock	(1,040)	0	0	0	0	(1,040)
Cash dividends	(200,889)	0	0	(200,889)	0	0
Stock grant forfeiture	0	$ 0	345	0	0	(345)
Stock grant forfeiture, shares		0
Net issuance of common stock under stock-based compensation plans	3,008	$ 1,093	1,915	0	0	0
Net issuance of common stock under stock-based compensation plans, shares		437,170
Ending Balance at Dec. 31, 2024	$ 4,993,223	$ 356,737	$ 3,196,154	$ 1,917,726	$ (223,903)	$ (253,491)
Ending Balance, shares at Dec. 31, 2024		142,694,816

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash dividends per share	$ 1.48	$ 1.45	$ 1.44
Common Stock [Member]
Cash dividends per share	$ 1.48	$ 1.45	$ 1.44
Stock grant forfeiture, shares	9,413	8,295	9,071
Net issuance of common stock under stock-based compensation plans	437,170	246,086	651,294
Treasury Stock [Member]
Purchase of treasury stock, shares	30,192	33,850	2,289,859

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
OPERATING ACTIVITIES
Net income	$ 372,996,000	$ 366,313,000	$ 379,627,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	25,153,000	31,153,000	18,822,000
Amortization and accretion	(5,313,000)	5,915,000	5,433,000
Loss on sales of bank premises, OREO, leases and equipment	322,000	345,000	457,000
Write-downs on bank premises, OREO, leases and equipment	219,000	945,000	2,007,000
Depreciation	15,709,000	17,191,000	18,237,000
Loss (gain) on securities	7,720,000	7,646,000	(776,000)
Loans originated for sale	(645,942,000)	(860,901,000)	(1,903,981,000)
Proceeds from sales of loans	673,906,000	887,398,000	2,238,093,000
Gain on sales of loans	(16,063,000)	(25,879,000)	(41,274,000)
Mortgage repurchase loan losses paid, net of recoveries	19,000	(304,000)	(69,000)
Stock-based compensation	12,130,000	12,463,000	9,881,000
Excess tax benefits from stock-based compensation arrangements	258,000	128,000	1,040,000
Deferred income tax (benefit) expense	(3,368,000)	(2,921,000)	6,887,000
Amortization of tax credit investments	15,277,000	15,238,000	13,567,000
Originations of mortgage servicing rights	0	(715,000)	(1,417,000)
Recoveries of impairment on mortgage servicing rights	0	0	(883,000)
Gain on sale of mortgage servicing rights	(7,086,000)	(8,306,000)	0
Increase in cash surrender value of bank-owned life insurance policies	(14,150,000)	(9,267,000)	(14,064,000)
Accretion (amortization) of net periodic pension costs	10,000	159,000	(1,640,000)
Changes in:
Interest receivable	9,008,000	(16,530,000)	(30,370,000)
Other assets	2,056,000	(3,618,000)	57,380,000
Accrued expenses and other liabilities	2,593,000	18,784,000	3,865,000
NET CASH PROVIDED BY OPERATING ACTIVITIES	445,454,000	435,237,000	760,822,000
INVESTING ACTIVITIES
Proceeds from sales of securities available for sale	454,993,000	181,824,000	410,000
Proceeds from maturities and calls of securities available for sale	2,459,102,000	770,389,000	575,338,000
Purchases of securities available for sale	(2,062,441,000)	(107,866,000)	(1,572,482,000)
Proceeds from sales of equity securities	8,113,000	344,000	6,782,000
Purchases of equity securities	(1,159,000)	(1,647,000)	(2,596,000)
Proceeds from sales and redemptions of other investment securities	160,637,000	155,299,000	4,829,000
Purchases of other investment securities	(136,392,000)	(178,476,000)	(99,435,000)
Redemption of bank-owned life insurance policies	3,864,000	2,556,000	11,947,000
Purchases of bank premises and equipment	(12,128,000)	(11,687,000)	(16,862,000)
Proceeds from sales of bank premises and equipment	101,000	2,542,000	902,000
Proceeds from sales of mortgage servicing rights	12,489,000	23,450,000	0
Proceeds from sales of OREO properties	2,355,000	3,240,000	10,571,000
Net change in loans and leases	(318,049,000)	(800,974,000)	(2,367,060,000)
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	571,485,000	38,994,000	(3,447,656,000)
FINANCING ACTIVITIES
Cash dividends paid	(200,727,000)	(194,727,000)	(193,041,000)
Acquisition of treasury stock	(1,040,000)	(1,382,000)	(79,460,000)
Proceeds from exercise of stock options	5,274,000	1,750,000	10,295,000
Repayment of long-term Federal Home Loan Bank borrowings	(1,500,000,000)	(1,900,000,000)	(520,000,000)
Proceeds from issuance of long-term Federal Home Loan Bank borrowings	250,000,000	1,500,000,000	1,900,000,000
Redemption of subordinated debt	0	(10,250,000)	0
Changes in:
Time deposits	254,936,000	1,318,577,000	(623,254,000)
Other deposits	887,924,000	(801,305,000)	(421,078,000)
Federal funds purchased, securities sold under agreements to repurchase and other short-term borrowings	(20,005,000)	35,397,000	31,854,000
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES	(323,638,000)	(51,940,000)	105,316,000
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	693,301,000	422,291,000	(2,581,518,000)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	1,598,943,000	1,176,652,000	3,758,170,000
CASH AND CASH EQUIVALENTS AT END OF YEAR	2,292,244,000	1,598,943,000	1,176,652,000
Supplemental information
Cash paid for interest on deposits and borrowed funds	590,635,000	468,123,000	98,161,000
Cash paid for income taxes	91,689,000	106,083,000	93,680,000
Cash paid for amounts in the measurement of lease liabilities	19,900,000	21,581,000	21,240,000
Noncash investing activities:
Transfers of loans held for sale to loans	0	0	154,699,000
Transfers of loans to OREO	359,000	4,941,000	1,546,000
Right-of-use assets obtained in the exchange for lease liabilities	8,896,000	33,403,000	9,184,000
Subsidiaries [Member]
Acquisition of subsidiaries and purchase price adjustments:
Assets acquired, net of cash	0	0	(345,000)
Liabilities assumed	0	0	2,050,000
Goodwill	$ 0	$ 0	$ 2,395,000

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ 94,408	$ 95,267	$ 96,507	$ 86,814	$ 79,390	$ 96,157	$ 92,459	$ 98,307	$ 372,996	$ 366,313	$ 379,627

Insider Trading Arrangements

Insider Trading Arrangements	12 Months Ended
	Dec. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Cybersecurity Risk Management a

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
	Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	Risk Management and Strategy In the ordinary course of business, United relies on electronic communications and information systems to conduct its operations and to store sensitive data. United employs an in-depth, layered, defensive approach that leverages people, processes and technology to manage and maintain cybersecurity controls. United employs a variety of preventative and detective tools to monitor, block, and provide alerts regarding suspicious activity, as well as to report on any suspected advanced persistent threats. Notwithstanding the strength of its defensive measures, the threat from cyber-attacks is severe, attacks are sophisticated and increasing in volume, and attackers respond rapidly to changes in defensive measures. While to date, United and United Bank have not experienced a material compromise, material data loss or any material financial losses related to cybersecurity attacks, United’s systems and those of its customers and third-party service providers are under constant threat and it is possible that United could experience a significant event in the future. United recognizes the critical importance of cybersecurity in our business operations. Our cybersecurity processes are fully integrated into our overall risk management system and processes. We believe that effective management of cybersecurity risks is integral to the protection of our assets, reputation, and the trust of our stakeholders. Our proactive approach to cybersecurity involves numerous processes including, regular risk assessments, employee training, incident response planning and testing, and continuous improvement in our cybersecurity practices. To ensure the robustness of our cybersecurity processes, we engage qualified assessors, consultants, and auditors on a periodic basis. These experts evaluate the effectiveness of our cybersecurity controls, identify vulnerabilities, and recommend improvements. We maintain ongoing relationships with reputable third-party firms specializing in cybersecurity to assess our systems, conduct penetration testing, and audit our processes for compliance with industry standards and regulations. United recognizes the inherent cybersecurity risks associated with third-party service providers. To manage these risks, we have implemented processes to oversee and identify material risks from cybersecurity threats linked to our use of third-party service providers. These processes include due diligence assessments, contractual provisions, and ongoing monitoring of our service providers’ cybersecurity practices. We continually assess the cybersecurity measures of our service providers to ensure they align with our own security standards and requirements. We do not currently believe that any current cybersecurity threats, including as a result of any previous cybersecurity incidents, have materially affected, or are reasonably likely to materially affect, United, including its business strategy, results of operations or financial condition. However, risks and exposures related to cybersecurity attacks, including litigation and enforcement risks, are expected to be elevated for the foreseeable future due to the rapidly evolving nature and sophistication of these threats, as well as due to the expanding use of Internet banking, mobile banking and other technology-based products and services by United and its customers. See Item 1A. Risk Factors for a further discussion of risk related to cybersecurity. Governance The Board of Directors’ risk management oversight is provided primarily by the Board Risk Committee. The Risk Committee oversees the Company’s Enterprise Risk Management Program and the processes established identify, measure, manage and monitor United’s significant financial and other risk exposures. In particular, the Risk Committee is responsible for oversight of information security, including cybersecurity, vendor management, and business continuity planning. The Risk Committee periodically reviews management’s strategies and policies for assessing and managing risk, including, but not limited to, the approval of the overall risk appetite and review of the risk management structure. At the management level, the responsibility for oversight of the risk management function lies with the Chief Risk & Information Officer. The Chief Risk & Information Officer (“CIRO”) is an executive officer of the Company who reports directly to the Chief Executive Officer. The CIRO provides regular risk management reports to the Risk Committee and the full Board of Directors, as well as at meetings of the independent directors. The management of the Company’s cybersecurity team has over a 100 years of industry experience combined, holds numerous certifications, and is regularly trained through continuing professional education. Information security, and specifically cyber security, is formally discussed quarterly at the Governance Steering Committee (“GSC”). The GSC is comprised of executive management, IT internal audit, digital banking leadership, and United’s Chief Information Security Officer (“CISO”). The activities of the GSC are reported quarterly to the Board Risk Committee. The CISO is responsible for leading and c oordinatin The Information Security department is integrated with vendor management, business continuity planning, disaster recovery, and incident response. Additionally, we have a formal cybersecurity program based on the NIST CSF (“National Institute of Standards and Technology Cybersecurity Framework”) and the CIS (“Center for Internet Security”) Benchmarks that identifies and assesses cybersecurity risks. We deploy a variety of preventative and detective tools to monitor, block, and provide alerts regarding suspicious activity. All employees have a responsibility to report suspected or verified incidents to the Information Security department and/or the CISO, and all employees are trained annually regarding the identification and reporting of incidents. The CISO maintains a centralized record all incidents and reports on these quarterly to the GSC and the Board Risk Committee. The CIRO is also immediately notified of any incident that exceeds pre-defined thresholds.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	Our cybersecurity processes are fully integrated into our overall risk management system and processes. We believe that effective management of cybersecurity risks is integral to the protection of our assets, reputation, and the trust of our stakeholders. Our proactive approach to cybersecurity involves numerous processes including, regular risk assessments, employee training, incident response planning and testing, and continuous improvement in our cybersecurity practices. To ensure the robustness of our cybersecurity processes, we engage qualified assessors, consultants, and auditors on a periodicbasis. These experts evaluate the effectiveness of our cybersecurity controls, identify vulnerabilities, and recommend improvements. We maintain ongoing relationships with reputable third-party firms specializing in cybersecurity to assess our systems, conduct penetration testing, and audit our processes for compliance with industry standards and regulations.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]	We do not currently believe that any current cybersecurity threats, including as a result of any previous cybersecurity incidents, have materially affected, or are reasonably likely to materially affect, United, including its business strategy, results of operations or financial condition. However, risks and exposures related to cybersecurity attacks, including litigation and enforcement risks, are expected to be elevated for the foreseeable future due to the rapidly evolving nature and sophistication of these threats, as well as due to the expanding use of Internet banking, mobile banking and other technology-based products and services by United and its customers. See Item 1A. Risk Factors for a further discussion of risk related to cybersecurity.
Cybersecurity Risk Board of Directors Oversight [Text Block]	The Board of Directors’ risk management oversight is provided primarily by the Board Risk Committee. The Risk Committee oversees the Company’s Enterprise Risk Management Program and the processes established identify, measure, manage and monitor United’s significant financial and other risk exposures. In particular, the Risk Committee is responsible for oversight of information security, including cybersecurity, vendor management, and business continuity planning. The Risk Committee periodically reviews management’s strategies and policies for assessing and managing risk, including, but not limited to, the approval of the overall risk appetite and review of the risk management structure. At the management level, the responsibility for oversight of the risk management function lies with the Chief Risk & Information Officer. The Chief Risk & Information Officer (“CIRO”) is an executive officer of the Company who reports directly to the Chief Executive Officer. The CIRO provides regular risk management reports to the Risk Committee and the full Board of Directors, as well as at meetings of the independent directors.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	At the management level, the responsibility for oversight of the risk management function lies with the Chief Risk & Information Officer.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	At the management level, the responsibility for oversight of the risk management function lies with the Chief Risk & Information Officer. The Chief Risk & Information Officer (“CIRO”) is an executive officer of the Company who reports directly to the Chief Executive Officer. The CIRO provides regular risk management reports to the Risk Committee and the full Board of Directors, as well as at meetings of the independent directors.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE A--SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations: its business. Operating and Reporting Segments As of December 31, 2024, United’s business activities are confined to one operating segment, United Bank, and one reportable segment, community banking. As a community banking entity, United, through United Bank, offers a full range of products and services through various delivery channels. Included among the banking products and services offered are the acceptance of deposits in checking, savings, time and money market accounts; the making and servicing of personal, credit card, commercial, and floor plan loans; and the making of construction and real estate loans as well as the origination and sale of residential mortgages in the secondary market. Also offered are trust and brokerage services, safe deposit boxes, and wire transfers. United’s chief operating decision maker regularly reviews the operating results of United Bank in order to assess performance and make decisions about resource allocation. At December 31, 2023, United had three operating segments: United Bank, George Mason Mortgage, LLC (“George Mason”) and Crescent Mortgage Company (“Crescent”), and two reporting segments: community banking and mortgage banking. However, during the first quarter of 2024, United consolidated the mortgage origination and sales business of George Mason and Crescent with that of United Bank. United previously exited the third-party origination (“TPO”) business during the fourth quarter of 2023. Basis of Presentation: As defined in applicable accounting standards, variable interest entities (“VIEs”) are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when an enterprise has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The enterprise with a controlling financial interest, known as the primary beneficiary, consolidates the VIE. United’s wholly owned and indirect wholly owned statutory trust subsidiaries are VIEs for which United is not the primary beneficiary. Accordingly, its accounts are not included in United’s consolidated financial statements. The accounting and reporting policies of United conform with U.S. generally accepted accounting principles. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. To conform to the 2024 presentation, certain reclassifications have been made to prior period amounts, which had no impact on net income, comprehensive income or shareholders’ equity. In the opinion of management, all adjustments necessary for a fair presentation of financial position and results of operations have been made. Such adjustments are of a normal and recurring nature. In the opinion of management, all adjustments necessary for a fair presentation of financial position and results of operations have been made. The Company has evaluated events and transactions subsequent to December 31, 2024 through the date these financial statements were issued. Based on definitions and requirements of generally accepted accounting principles for “Subsequent Events,” the Company has not identified any events that would require adjustments to, or disclosure in the financial statements other than information related to the acquisition of Piedmont Bancorp, Inc. (“Piedmont”) disclosed in Note B, Notes to Consolidated Financial Statements. Cash and Cash Equivalents: Debt securities HTM securities are accounted for at amortized cost, but the Company must have both the positive intent and the ability to hold those securities to maturity. There are very limited circumstances under which securities in the HTM category can be sold without jeopardizing the cost basis of accounting for the remainder of the securities in this category. Substantially all of the Company’s HTM debt securities are issued by state and political subdivisions (municipalities). As of December 31, 2024, United considers its HTM debt securities portfolio to be immaterial. AFS securities are accounted for at fair value. Gains and losses realized on the sale of these securities are accounted for based on the specific identification method. Unrealized gains and losses for AFS securities are excluded from earnings and reported net of the related tax effect in the accumulated other comprehensive income component of shareholders’ equity. Allowance for Credit Losses (HTM Debt Securities) Allowance for Credit Losses (AFS Debt Securities) Equity securities: Other investment securities: investments Securities Purchased Under Resale Agreements and Securities Sold Under Agreements to Repurchase: Loans: For all loan classes, past due loans and leases are reviewed on a monthly basis to identify loans and leases for nonaccrual status. Generally, when collection in full of the principal and interest is jeopardized, the loan is placed on nonaccrual status. The accrual of interest income on commercial and most consumer loans generally is discontinued when a loan becomes 90 to 120 days past due as to principal or interest. However, regardless of delinquency status, if a loan is fully secured and in the process of collection and resolution of collection is expected in the near term (generally less than 90 days), then the loan will not be placed on nonaccrual status. When interest accruals are discontinued, unpaid interest recognized in income in the current year is reversed, and unpaid interest accrued in prior years is charged to the allowance for credit losses. United’s method of income recognition for loans and leases that are classified as nonaccrual is to recognize interest income on a cash basis or apply the cash receipt to principal when the ultimate collectibility of principal is in doubt. Nonaccrual loans and leases will not normally be returned to accrual status unless all past due principal and interest has been paid and the borrower has evidenced their ability to meet the contractual provisions of the note. Loans Acquired Through Transfer: Loans acquired in a business combination that have experienced more-than-insignificant deterioration in credit quality since origination are considered purchased credit deteriorated (“PCD”) loans. At the acquisition date, an estimate of expected credit losses is made for groups of PCD loans with similar risk characteristics and individual PCD loans without similar risk characteristics. This initial allowance for credit losses is allocated to individual PCD loans and added to the purchase price or acquisition date fair values to establish the initial amortized cost basis of the PCD loans. As the initial allowance for credit losses is added to the purchase price, there is no credit loss expense recognized upon acquisition of a PCD loan. Any difference between the unpaid principal balance of PCD loans and the amortized cost basis is considered to relate to noncredit factors and results in a discount or premium. Discounts and premiums are recognized through interest income on a level-yield method over the life of the loans. For loans and leases acquired after the adoption of ASC Topic 326, United will likely take several factors into consideration when determining if loans and leases meet the definition of PCD. ASC Topic 326 lists some, but not all, factors for consideration in the bifurcation of PCD versus non-PCD assets: · Financial assets that are delinquent as of the acquisition date · Financial assets that have been downgraded since origination · Financial assets that have been placed on nonaccrual status For acquired loans not deemed purchased credit deteriorated at acquisition, the differences between the initial fair value and the unpaid principal balance are recognized as interest income on a level-yield basis over the lives of the related loans. Loans Held for Sale: Loans held for sale are recorded under the fair value option at a fair value measured using valuations from investors for loans with similar characteristics adjusted for the Company’s actual sales experience versus the investor’s indicated pricing. Gains and losses on sale of loans are recorded within income from mortgage banking activities. Allowance for Loan and Lease Losses: United made a policy election to present the accrued interest receivable balance separately in its consolidated balance sheets from the amortized cost of a loan. United estimates the allowance balance using relevant available information, from internal and external sources, relating to past events, current conditions and reasonable and supportable forecasts. Historical credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwriting standards, portfolio mix, delinquency level or term as well as reasonable and supportable forecast adjustments for changes in environmental conditions, such as changes in unemployment rates, property values or other relevant factors. A reversion to historical loss data occurs via a straight-line method during the year following the one-year reasonable and supportable forecast period. United pools its loans and leases based on similar risk characteristics in estimating expected credit losses. United has identified the following portfolio segments and measures the allowance for credit losses using the following methods: · Method: Probability of Default/Loss Given Default (PD/LGD) Ø Commercial Real Estate Owner-Occupied Ø Commercial Real Estate Nonowner-Occupied Ø Commercial Other · Method: Cohort Ø Residential Real Estate Ø Construction & Land Development Ø Consumer Ø Bankcard Risk characteristics of commercial real estate owner-occupied loans and commercial other loans and leases are similar in that they are normally dependent upon the borrower’s internal cash flow from operations to service debt. Commercial real estate nonowner-occupied loans differ in that cash flow to service debt is normally dependent on external income from third parties for use of the real estate such as rents, leases and room rates. Residential real estate loans are dependent upon individual borrowers who are affected by changes in general economic conditions, demand for housing and resulting residential real estate valuation. Construction and land development loans are impacted mainly by demand whether for new residential housing or for retail, industrial, office and other types of commercial construction within a given area. Consumer loan pool risk characteristics are influenced by general, regional and local economic conditions. Loans that do not share risk characteristics are evaluated on an individual basis. Loans evaluated individually are not also included in the collective evaluation. When management determines that foreclosure is probable or when the borrower is experiencing financial difficulty at the reporting date and repayment is expected to be provided substantially through the operation or sale of the collateral but may also include other non-performing loans, expected credit losses are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. These individually evaluated loans are removed from their respective pools and typically represent collateral dependent loans. Expected credit losses are estimated over the contractual term of the loans and leases, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless management has a reasonable expectation at the reporting date that the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancelable by United. At the acquisition date, an initial allowance for expected credit losses for non-PCD loans is estimated and recorded as credit loss expense. The subsequent measurement of expected credit losses for all acquired loans is the same as the subsequent measurement of expected credit losses for originated loans. For allowance for credit losses under ASC Topic 326 calculation purposes, United includes its acquired loans and leases in their relevant pool unless they meet the criteria for specific review. Bank Premises and Equipment: three five Other Real Estate Owned Intangible Assets: one Goodwill is tested for impairment at least annually or sooner if indicators of impairment exist. United may elect to perform a qualitative analysis to determine whether or not it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount. If United elects to bypass this qualitative analysis, or concludes via qualitative analysis that it is more-likely-than-not that the fair value of a reporting unit is less than its carrying value, United may use either a market or income quantitative approach, whichever is more practical, to determine the fair value of the reporting unit to compare to its carrying value. If the estimated fair value of the reporting unit is less than its carrying value, an impairment charge would be recorded for the excess, not to exceed the amount of goodwill allocated to the reporting unit. At each reporting date, the Company considers potential indicators of impairment. United bypassed a qualitative assessment and utilized a quantitative approach to test goodwill for impairment as of September 30, 2024. The goodwill impairment test did not identify any indicators of goodwill impairment. As of December 31, 2024, and 2023, total goodwill approximated $ . Mortgage Servicing Rights, Fees and Costs: MSRs are amortized in proportion to, and over the period of, estimated net servicing income. The amortization of the MSRs is analyzed periodically and is adjusted to reflect changes in prepayment rates and other estimates. The Company evaluates potential impairment of MSRs based on the difference between the carrying amount and current estimated fair value of the servicing rights. In determining impairment, the Company aggregates all servicing rights and stratifies them into tranches based on predominant risk characteristics. If impairment exists, a valuation allowance is established for any excess of amortized cost over the current estimated fair value by a charge to income. If the Company later determines that all or a portion of the impairment no longer exists for a particular tranche, a reduction of the allowance may be recorded as an increase to income. Service fee income is recorded for fees earned for servicing mortgage loans under servicing agreements with the Federal National Mortgage Association (“FNMA”), the Federal Home Loan Mortgage Corporation (“FHLMC”) and certain private investors. The fees are based on a contractual percentage of the outstanding principal balance of the loans serviced and are recorded in noninterest income. Amortization of MSRs and mortgage servicing costs are charged to expense when incurred. During the third quarter of 2024, United sold its remaining balance of MSRs. Accrued Interest Receivable • Presenting accrued interest receivable balances separately from their underlying instruments within the consolidated statements of financial condition. • Excluding accrued interest receivable that is included in the amortized cost of financing receivables from related disclosure requirements. • Continuing our policy to write off accrued interest receivable by reversing interest income in cases where the Company does not reasonably expect to receive payment. • Not measuring an allowance for credit losses for accrued interest receivable due to the Company’s policy of writing off uncollectible accrued interest receivable balances in a timely manner. Revenue Recognition Descriptions of our revenue-generating activities that are within the scope of ASC Topic 606, which are presented in our Consolidated Statements of Income as components of Other Income are discussed below. There are no significant judgements relating to the amount and timing of revenue recognition for those revenue streams under the scope of ASC Topic 606. Fees from Trust Services Revenue from trust services primarily is comprised of fees earned from the management and administration of trusts and other customer assets. Trust services include custody of assets, investment management, escrow services, and similar fiduciary activities. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days after month end through a direct charge to customers’ accounts. Fees from Brokerage Services Revenue from brokerage services are recorded as the income is earned at the time the related service is performed. In return for such services, the Company charges a commission for the sales of various securities products primarily consisting of investment company shares, annuity products, and corporate debt and equity securities, for its selling and administrative efforts. For account supervision, advisory and administrative services, revenue is recognized over a period of time as earned based on customer account balances and activity. Fees from Deposit Services Service charges on deposit accounts consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, check orders, ATM activity fees, debit card fees, and other deposit account related fees. Revenue is recognized when our performance obligation is completed which is generally monthly for account maintenance services or when a transaction has been completed (ATM or debit card activity). Bankcard Fees and Merchant Discounts Bankcard fees and merchant discounts are primarily comprised of credit card income and merchant services income. Credit card income is primarily comprised of interchange fees earned whenever the Company’s credit cards are processed through card payment networks such as Visa. Merchant services income mainly represents fees charged to merchants to process their credit card transactions. The Company’s performance obligation for bankcard fees and interchange are largely satisfied, and related revenue recognized at the time services are rendered. Payment is typically received immediately or in the following month. Advertising Costs: Income Taxes: For uncertain income tax positions, United records a liability based on a recognition threshold of more-likely-than-not, and a measurement attribute for all tax positions taken on a tax return, in order for those tax positions to be recognized in the financial statements. United files a consolidated income tax return with its subsidiaries. Federal income tax expense or benefit has been allocated to subsidiaries on a separate return basis. Derivative Financial Instruments: Derivative instruments designated in a hedge relationship to mitigate exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivative instruments designated in a hedge relationship to mitigate exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. For a fair value hedge, the fair value of the interest rate swap is recognized on the balance sheet as either a freestanding asset or liability with a corresponding adjustment to the hedged financial instrument. Subsequent adjustments due to changes in the fair value of a derivative that qualifies as a fair value hedge are offset in current period earnings either in interest income or interest expense depending on the nature of the hedged financial instrument. For a cash flow hedge, the fair value of the interest rate swap is recognized on the balance sheet as either a freestanding asset or liability with a corresponding adjustment to accumulated other comprehensive income within shareholders’ equity, net of tax. Subsequent adjustments due to changes in the fair value of a derivative that qualifies as a cash flow hedge are offset to accumulated other comprehensive income, net of tax and reclassified into earnings in the same line associated with the forecasted transaction when the forecasted transaction affects earnings. Fair value hedges may be eligible for offset on the consolidated balance sheets because they are subject to master netting arrangements or similar agreements. United has elected not to offset the assets and liabilities subject to such arrangements on the consolidated financial statements. At inception of a hedge relationship, United formally documents the hedged item, the particular risk management objective, the nature of the risk being hedged, the derivative being used, how effectiveness of the hedge will be assessed and how the ineffectiveness of the hedge will be measured. United also assesses hedge effectiveness at inception and on an ongoing basis using regression analysis. Hedge ineffectiveness is measured by using the change in fair value method. The change in fair value method compares the change in the fair value of the hedging derivative to the change in the fair value of the hedged exposure, attributable to changes in the benchmark rate. United enters into interest rate lock commitments to finance residential mortgage loans with its customers. These commitments, which contain fixed expiration dates, offer the borrower an interest rate guarantee provided the loan meets underwriting guidelines and closes within the timeframe established by United. Interest rate risk arises on these commitments and subsequently closed loans if interest rates change between the time of the interest rate lock and the delivery of the loan to the investor. Market risk on interest rate lock commitments and mortgage loans held for sale is managed using corresponding forward mortgage loan sales contracts. United is a party to these forward mortgage loan sales contracts to sell loans with servicing released and short sales of mortgage-backed securities. When the interest rate is locked with the borrower, the rate lock commitment, forward sale agreement, and mortgage-backed security position are undesignated derivatives and marked to fair value through earnings. The fair value of the rate lock derivative is measured using valuations from investors for loans with similar characteristics as well as considering the probability of the loan closing (i.e. the “pull-through” rate) with some adjusted for the Company’s actual sales experience versus the investor’s indicated pricing. Fair values of TBA mortgage-backed securities are measured using valuations from investors for mortgage-backed securities with similar characteristics. Income from mortgage banking activities includes the gain recognized for the period presented and associated elements of fair value. United is subject to the Dodd-Frank Act clearing requirement for eligible derivatives. United has executed and cleared eligible derivatives through the London Clearing House (“LCH”). Variation margin at the LCH is distinguished as settled-to-market and settled daily based on the prior day value, rather than collateralized-to-market. The daily settlement of the derivative exposure does not change or reset the contractual terms of the instrument. For derivatives that are not designated in a hedge relationship, changes in the fair value of the derivatives are recognized in earnings in the same period as the change in the fair value. Cash flows from derivative financial instruments are classified as cash flows from operating activities on the consolidated statements of cash flows. Off-balance-sheet credit exposures : Stock-Based Compensation Stock-based compensation expense was $12,130,000 in 2024, $12,463,000 in 2023, and $9,881,000 in 2022. Treasury Stock Trust Assets and Income: Earnings Per Common Share: Under the two-class method, basic earnings per common share is computed by dividing net earnings allocated to common stock by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method. Antidilutive stock options and restricted stock outstanding of 590,395, 1,410,389, and 656,432 for the years ended December 31, 2024, 2023 and 2022, respectively, were excluded from the earnings per diluted common share calculation. The reconciliation of the numerator and denominator of basic earnings per share with that of diluted earnings per share is presented as follows: Year Ended December 31 (Dollars in thousands, except per share) 2024 2023 2022 Distributed earnings allocated to common   $ 200,156   $ 195,167   $ 194,052 Undistributed earnings allocated to common 172,006 170,267 184,572 Net earnings allocated to common   $ 372,162   $ 365,434   $ 378,624 Average common shares outstanding 134,947,592 134,505,058 134,776,241 Dilutive effect of stock compensation 277,825 248,762 341,271 Average diluted shares outstanding 135,225,417 134,753,820 135,117,512 Earnings per basic common share   $ 2.76   $ 2.72   $ 2.81 Earnings per diluted common share   $ 2.75   $ 2.71   $ 2.80 Fair Value Measurements ASC Topic 820 specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect United’s market assumptions. The three levels of the fair value hierarchy based on these two types of inputs are as follows: Level 1 -  Valuation is based on quoted prices in active markets for identical assets and liabilities. Level 2 -  Valuation is based on observable inputs including quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets and liabilities in less active markets, and model-based valuation techniques for which significant assumptions can be derived primarily from or corroborated by observable data in the market. Level 3 -  Valuation is based on model-based techniques that use one or more significant inputs or assumptions that are unobservable in the market. When determining the fair value measurements for assets and liabilities, United looks to active and observable markets to price identical assets or liabilities whenever possible and classifies such items in Level 1. When identical assets and liabilities are not traded in active markets, United looks to market observable data for similar assets and liabilities and classifies such items as Level 2. Nevertheless, certain assets and liabilities are not actively traded in observable markets and United must use alternative valuation techniques using unobservable inputs to determine a fair value and classifies such items as Level 3. For assets and liabilities that are not actively traded, the fair value measurement is based primarily upon estimates that require significant judgment. Therefore, the results may not be realized in an actual sale or immediate settlement of the asset or liability. Additionally, there are inherent weaknesses in any calculation technique, and changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the results of current or future values. The level within the fair value hierarchy is based on the lowest level of input that is significant in the fair value measurement. Recent Accounting Pronouncements In November 2024, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2024-04, 2024-04 2024-04 2024-04 2024-04 ASU 2024-04 In November 2024, the FASB issued Accounting Standards Update ASU 2024-03, “Disaggregation of Income Statement Expenses.” ASU 2024-03 requires disaggregated disclosure of income statement expenses for public business entities. ASU 2024-03 adds ASC 220-40 to require a footnote disclosure about specific expenses by requiring public business entities to disaggregate, in a tabular presentation, each relevant expense caption on the face of the income statement that includes any of the following natural expenses: purchases of inventory, employee compensation, depreciation, intangible asset amortization, and depreciation, depletion, and amortization recognized as part of oil- and gas-producing activities or other types of depletion expenses. Certain other expenses and gains or losses that must be disclosed under existing U.S. GAAP, and that are recorded in a relevant expense caption, must be presented in the same tabular disclosure. ASU 2024-03 does not change or remove existing expense disclosure requirements; however, it may affect where that information appears in the footnote to the financial statements. ASU 2024-03 is effective for public business entities for annual periods beginning after December 15, 2026. Entities are permitted to early adopt the standard and apply retrospectively for annual financial statements that have not yet been issued or made available for issuance. The adoption of ASU 2024-03 is not expected to have an impact on the Company’s financial condition or results of operations but could change certain disclosures in United’s SEC filings. In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, 2023-09 2023-09 effectiveness of income tax disclosures. ASU 2023-09 ASU 2023-09 In November 2023, the FASB issued ASU 2023-07, 2023-07 No. 2023-07 ASU 2023-07 10-K. In October 2023, the FASB issued ASU 2023-06, S-X S-K ASU 2023-06 In August 2023, the FASB issued ASU 2023-05, “Business Combinations – Joint Venture Formations (Subtopic 805-60).” ASU 2023-05 requires a joint venture to apply a new basis of accounting at its formation date by valuing the net assets contributed at fair value for both business and asset transactions. The value of the net assets in total is then allocated to individual assets and liabilities by applying Topic 805 with certain exceptions. ASU 2023-05 requires certain disclosures to aid the user of the financial statements in understanding the implications of the joint venture formation. ASU 2023-05 is effective for joint venture formations with a formation date on or after January 1, 2025. The adoption of ASU 2023-05 is not expected to have an impact on the Company’s financial condition or results of operations. In July 2023, the FASB issued ASU No. 2023-03, “Presentation of Financial Statements (Topic 205), Income Statement—Reporting Comprehensive Income (Topic 220), Distinguishing Liabilities from Equity (Topic 480), Equity (Topic 505), and Compensation—Stock Compensation (Topic 718): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 120, SEC Staff Announcement at the March 24, 2022 EITF Meeting, and Staff Accounting Bulletin Topic 6.B, Accounting Series Release 280—General Revision of Regulation S-X: Income or Loss Applicable to Common Stock.” ASU 2023-03 amends the ASC for SEC updates pursuant to SEC Staff Accounting Bulletin No. 120; SEC Staff Announcement at the March 24, 2022 Emerging Issues Task Force (“EITF”) Meeting; and Staff Accounting Bulletin Topic 6.B, Accounting Series Release 280—General Revision of Regulation S-X: Income or Loss Applicable to Common Stock. These updates were immediately effective and did not have a significant impact on the Company’s financial statements. In March 2023, the FASB issued Accounting ASU 2023-02, “Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method.” ASU 2023-02 permits reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. The amendments in this ASU apply to all reporting entities that hold tax equity investments that meet the conditions for and elect to account for them using the propor

Mergers and Acquisitions

Mergers and Acquisitions	12 Months Ended
	Dec. 31, 2024
Business Combinations [Abstract]
Mergers and Acquisitions	NOTE B--MERGERS On January 10, 2025, United consummated its acquisition of Piedmont. Piedmont was merged with and into United (the “Merger”), pursuant to the terms of the Agreement and Plan of Merger, dated May 9, 2024, by and between United and Piedmont (the “Agreement”). The Merger was accounted for under the acquisition method of accounting. Piedmont, headquartered in Atlanta, Georgia had total assets of approximately $2.4 billion, total loans of approximately $2.1 billion, total liabilities of approximately $2.2 billion, total deposits of approximately $2.1 billion, and total shareholders’ equity of approximately $202 million as of January 10, 2025. Piedmont was the holding company for The Piedmont Bank, a Georgia state-chartered bank, with sixteen locations in the State of Georgia.  Under the terms of the Agreement, each outstanding share of common stock of Piedmont was converted into the right to receive 0.3 shares of United common stock, par value $2.50 per share. Also pursuant to the Agreement, as of the effective time of the Merger, each option to purchase shares of Piedmont Common Stock (each, a “Piedmont Stock Option”) that is outstanding under the Piedmont Bancorp, Inc. 2009 Stock Option Plan (the “Piedmont Stock Plan”) immediately prior to the Effective Time, was, to the extent not vested, became fully vested and exercisable and was canceled in consideration for the right to receive a lump sum cash payment with respect thereto equal to the product of: (i) the excess, if any, of the product of (A) the volume-weighted average of the closing sales price on Nasdaq of United Common Stock for the 10 full trading days ending on the second trading day immediately preceding the Effective Date (the “Average United Closing Price”) multiplied by (B) the Exchange Ratio, over the applicable exercise price of such Piedmont Stock Option; and (ii) the number of shares of Piedmont Common Stock subject to such Piedmont Stock Option, less any required withholding taxes. Also pursuant to the Agreement, as of the effective time of the Merger, each warrant to purchase shares of Piedmont Common Stock (each, a “Piedmont Stock Warrant”) that was outstanding under the Piedmont Stock Plan or individual award agreement immediately prior to the Effective Time, was, to the extent not vested, became fully vested and exercisable and canceled, and in consideration therefor, at the election of the holder (i) converted into a warrant to purchase shares of United common stock with adjustments to the exercise price and number of shares to take into account the Exchange Ratio or (ii) received a lump sum cash payment with respect thereto equal to the product of: (A) the excess, if any, of the product of (x) the Average United Closing Price multiplied by (y) the Exchange Ratio, over the applicable exercise price of such Piedmont Stock Warrant; and (B) the number of shares of Piedmont Common Stock subject to such Piedmont Stock Warrant, less any required withholding taxes. In addition, at the Effective Time, each restricted stock grant, restricted stock unit grant and any other award in respect of a share of Piedmont Common Stock subject to vesting, repurchase or other lapse restriction under a Piedmont Stock Plan that was outstanding immediately prior to the Effective Time other than a Piedmont Option or a Piedmont Stock Warrant (each, a “Piedmont Stock Award”) became fully vested, cancelled and converted automatically into the right to receive the Merger Consideration (with any fractional share being entitled to receive cash in lieu thereof) in respect of each share of Piedmont Common Stock underlying such Piedmont Stock Award, less any required withholding taxes. Immediately following the Merger, The Piedmont Bank, a wholly-owned subsidiary of Piedmont, merged with and into United Bank, a wholly-owned subsidiary of United (the “Bank Merger”) pursuant to an Agreement and Plan of Merger dated May 9, 2024 (the “Bank Plan of Merger”). United Bank survived the Bank Merger and continues to exist as a Virginia banking corporation. For the year of 2024, United recorded acquisition-related costs of $2,870,000.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Investment Securities	NOTE C--INVESTMENT Securities Available for Sale Securities held for indefinite periods of time are classified as available for sale and carried at estimated fair value. The amortized cost and estimated fair values of securities available for sale are summarized as follows. December 31, 2024 Gross Gross Allowance Estimated (Dollars in thousands) Amortized Unrealized Unrealized For Credit Fair Cost Gains Losses Losses Value U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 248,867 $ 59 $ 3,084 $ 0 $ 245,842 State and political subdivisions 574,580 8 79,515 0 495,073 Residential mortgage-backed securities Agency 1,226,400 433 167,114 0 1,059,719 Non-agency 88,392 262 6,531 0 82,123 Commercial mortgage-backed securities Agency 372,646 38 42,698 0 329,986 Asset-backed securities 476,863 166 2,047 0 474,982 Single issue trust preferred securities 13,296 0 1,377 0 11,919 Other corporate securities 281,646 0 21,571 0 260,075 Total $ 3,282,690 $   966 $ 323,937 $ 0 $ 2,959,719 December 31, 2023 Gross Gross Allowance Estimated (Dollars in thousands) Amortized Unrealized Unrealized For Credit Fair Cost Gains Losses Losses Value U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 492,638 $ 4 $ 7,692 $ 0 $ 484,950 State and political subdivisions 613,588 11 79,768 0 533,831 Residential mortgage-backed securities Agency 1,217,744 7 167,810 0 1,049,941 Non-agency 100,364 0 9,753 0 90,611 Commercial mortgage-backed securities Agency 511,560 13 52,275 0 459,298 Asset-backed securities 872,048 44 11,454 0 860,638 Single issue trust preferred securities 16,380 0 1,239 0 15,141 Other corporate securities 325,573 0 33,606 0 291,967 Total $ 4,149,895 $  79 $ 363,597 $  0 $  3,786,377 For the adoption of ASC Topic 326, “Financial Instruments—Credit Losses,” United made a policy election to exclude accrued interest from the amortized cost basis of available-for-sale debt securities and report accrued interest separately in “Accrued interest receivable” in the consolidated balance sheets. Available-for-sale debt securities are placed on non-accrual status when we no longer expect to receive all contractual amounts due, which is generally at 90 days past due. Accrued interest receivable is reversed against interest income when a security is placed on non-accrual status. Accordingly, United does not currently recognize an allowance for credit loss against accrued interest receivable on available-for-sale debt securities. The table above excludes accrued interest receivable of $14,776,000 and $20,878,000 at December 31, 2024 and December 31, 2023, respectively, that is recorded in “Accrued interest receivable.” The following is a summary of securities available for sale which were in an unrealized loss position at December 31, 2024 and December 31, 2023. Less than 12 months 12 months or longer Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Losses Value Losses Value Losses December 31, 202 4 U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 1,476 $ 3 $ 42,886 $ 3,081 $ 44,362 $ 3,084 State and political subdivisions 3,314 22 479,681 79,493 482,995 79,515 Residential mortgage-backed securities Agency 128,655 1,660 856,448 165,454 985,103 167,114 Non-agency 0 0 59,668 6,531 59,668 6,531 Commercial mortgage-backed securities Agency 0 0 319,506 42,698 319,506 42,698 Asset-backed securities 83,188 50 215,886 1,997 299,074 2,047 Single issue trust preferred securities 0 0 11,919 1,377 11,919 1,377 Other corporate securities 2,476 24 252,634 21,547 255,110 21,571 Total $ 219,109 $ 1,759 $ 2,238,628 $ 322,178 $ 2,457,737 $ 323,937 Less than 12 months 12 months or longer Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Losses Value Losses Value Losses December 31, 2023 U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 4,625 $ 11 $ 477,615 $ 7,681 $ 482,240 $ 7,692 State and political subdivisions 2,050 193 517,186 79,575 519,236 79,768 Residential mortgage-backed securities Agency 9,755 51 1,038,632 167,759 1,048,387 167,810 Non-agency 8,964 101 81,647 9,652 90,611 9,753 Commercial mortgage-backed securities Agency 0 0 456,866 52,275 456,866 52,275 Asset-backed securities 15,866 216 829,778 11,238 845,644 11,454 Single issue trust preferred securities 2,922 182 12,219 1,057 15,141 1,239 Other corporate securities 0 0 274,308 33,606 274,308 33,606 Total $ 44,182 $ 754 $ 3,688,251 $ 362,843 $ 3,732,433 $ 363,597 The following table shows the proceeds from maturities, sales and calls of available for sale securities and the gross realized gains and losses on sales and calls of those securities that have been included in earnings as a result of any sales and calls. Gains or losses on sales and calls of available for sale securities were recognized by the specific identification method. Year Ended (In thousands)  2024   2023   2022  Proceeds from maturities, sales and calls $ 2,914,095 $  952,213  $  575,748  Gross realized gains 0 0 2 Gross realized losses 16,296  7,659  0  At December 31, 2024, gross unrealized losses on available for sale securities were $323,937,000 on 958 securities of a total portfolio of 1,029 available for sale securities. Securities with the most significant gross unrealized losses at December 31, 2024 consisted primarily of agency residential mortgage-backed securities, state and political subdivision securities, agency commercial mortgage-backed securities, and other corporate securities. In determining whether or not a security is impaired, management considered the severity of the loss in conjunction with United’s positive intent and the more likely than not ability to hold these securities to recovery of their cost basis or maturity. Generally, the significant amount of gross unrealized losses on available for sale securities at December 31, 2024 was the result of rising interest rates. State and political subdivisions United’s state and political subdivisions portfolio relates to securities issued by various municipalities located throughout the United States. The total amortized cost of available for sale state and political subdivision securities was $574,580,000 at December 31, 2024. As of December 31, 2024, approximately 46% of the portfolio was supported by the general obligation of the issuing municipality, which allows for the securities to be repaid by any means available to the municipality. The majority of the portfolio was rated AA or higher, and no securities within the portfolio were rated below investment grade as of December 31, 2024. In addition to monitoring the credit ratings of these securities, management also evaluates the financial performance of the underlying issuers on an ongoing basis. Based upon management’s analysis and judgment, it was determined that none of the state and political subdivision securities had credit losses at December 31, 2024. Mortgage-backed securities The fair value of mortgage-backed mortgage-backed United’s agency mortgage-backed securities portfolio relates to securities issued by Fannie Mae, Freddie Mac, and Ginnie Mae. The total amortized cost of available for sale agency mortgage-backed securities was $1,599,046,000 at December 31, 2024. Of the $1,599,046,000 amount, $372,646,000 was related to agency commercial mortgage-backed securities and $1,226,400,000 was related to agency residential mortgage-backed securities. Each of the agency mortgage-backed securities provides a guarantee of full and timely payments of principal and interest by the issuing agency. Based upon management’s analysis and judgment, it was determined that none of the agency mortgage-backed securities had credit losses at December 31, 2024. United’s non-agency residential mortgage-backed securities portfolio relates to securities of various private label issuers. The total amortized cost of available for sale non-agency residential mortgage-backed securities was $88,392,000 at December 31, 2024. Of the $88,392,000, 100% was rated AAA. Based upon management’s analysis and judgment, it was determined that none of the non-agency residential mortgage-backed securities had credit losses at December 31, 2024. Asset-backed securities As of December 31, 2024, United’s asset-backed securities portfolio had a total amortized cost balance of $476,863,000. 100% of the portfolio was investment grade rated as of December 31, 2024. Approximately 34% of the portfolio relates to securities that are backed by Federal Family Education Loan Program (“FFELP”) student loan collateral which includes a minimum of a 97% government repayment guaranty, as well as additional credit support and subordination in excess of the government guaranteed portion. Approximately 66% of the portfolio relates to collateralized loan obligation securities that are all AAA rated. Upon reviewing this portfolio as of December 31, 2024, it was determined that none of the asset-backed securities had credit losses. Single issue trust preferred securities The majority of United’s single issue trust preferred portfolio consists of obligations from large cap banks (i.e. banks with market capitalization in excess of $10 billion). All single issue trust preferred securities are currently receiving interest payments. The amortized cost of available for sale single issue trust preferred securities as of December 31, 2024 consisted of $7,481,000 in investment grade bonds and $5,815,000 in unrated bonds. Management reviews each issuer’s current and projected earnings trends, asset quality, capitalization levels, and other key factors. Upon completing the review for the fourth quarter of 2024, it was determined that none of the single issue trust preferred securities had credit losses. Corporate securities As of December 31, 2024, United’s other corporate securities portfolio had a total amortized cost balance of $281,646,000. The majority of the portfolio consisted of debt issuances of corporations representing a variety of industries, including financial institutions. Of the $281,646,000, 95% had at least one rating above investment grade, 2% were below investment grade rated, and 3% were unrated. For other corporate securities, management has evaluated the near-term prospects of the investment in relation to the severity of any unrealized loss. Based upon management’s analysis and judgment, it was determined that none of the other corporate securities had credit losses at December 31, 2024. The amortized cost and estimated fair value of securities available for sale at December 31, 2024 by contractual maturity are shown below. Expected maturities may differ from contractual maturities because the issuers may have the right to call or prepay obligations without penalties. Maturities of mortgage-backed securities with an amortized cost of $1,687,438,000 and an estimated fair value of $1,471,828,000 at December 31, 2024 are included below based upon contractual maturity. (In thousands)  Amortized   Estimated  Due in one year or less $ 262,093 $ 261,458 Due after one year through five years 405,617 375,276 Due after five years through ten years 863,601 779,069 Due after ten years 1,751,379 1,543,916 Total $ 3,282,690 $ 2,959,719 Equity securities at fair value Equity securities consist mainly of equity securities of financial institutions, mutual funds of Community Reinvestment Act (“CRA”) qualified investments and equity securities within a rabbi trust for the payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries. The fair value of United’s equity securities was $21,058,000 at December 31, 2024 and $8,945,000 at December 31, 2023. Year Ended (In thousands) December 31, 2024 December 31, 2023 Net gains recognized during the period on equity securities sold $ 4,602 $ 0 Unrealized gains recognized during the period on equity securities still held at period end 4,259 358 Unrealized losses recognized during the period on equity securities still held at period end (285 ) (345 ) Net gains (losses) recognized during the period $ 8,576 $ 13 Other investment securities During the fourth quarter of 2024, United evaluated all of its cost method investments to determine if certain events or changes in circumstances during the fourth quarter of 2024 had a significant adverse effect on the recorded value of any of its cost method securities. United determined that there was no individual security that experienced an adverse event during the fourth quarter. There were no other events or changes in circumstances during the fourth quarter which would have an adverse effect on the recorded fair value of its cost method securities. The carrying value of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes as required or permitted by law, approximated $2,038,864,000 and $2,307,591,000 at December 31, 2024 and December 31, 2023, respectively.

Loans and Leases

Loans and Leases	12 Months Ended
	Dec. 31, 2024
Receivables [Abstract]
Loans and Leases	NOTE D—LOANS AND LEASES Major classes of loans and leases are as follows: (In thousands) December 31, December 31, Commercial, financial and agricultural: Owner-occupied commercial real estate $ 1,590,002 $ 1,598,231 Nonowner-occupied commercial real estate 6,939,641 6,718,343 Other commercial 3,351,362 3,572,440 Total commercial, financial & agricultural 11,881,005 11,889,014 Residential real estate 5,507,384 5,271,236 Construction & land development 3,509,034 3,148,245 Consumer: Bankcard 9,998 9,962 Other consumer 773,077 1,054,728 Less: Unearned income (7,005 ) (14,101 ) Loans and leases, net of unearned income $ 21,673,493 $ 21,359,084 The table above does not include loans held for sale of $44,360,000 and $56,261,000 at December 31, 2024 and December 31, 2023, respectively. Loans held for sale consist of single-family residential real estate loans originated for sale in the secondary market. At December 31, 2024 and 2023, loans-in-process of $5,569,000 and $6,370,000 and overdrafts from deposit accounts of $4,919,000 and $7,146,000, respectively, are included within the appropriate loan classifications above. The outstanding loan balances in the table above also include unamortized net discounts of $26,322,000 and $35,586,000 at December 31, 2024 and December 31, 2023, respectively. United’s subsidiary bank has made loans, in the normal course of business, to the directors and officers of United and its subsidiaries, and to their associates. The aggregate dollar amount of these loans was $22,702,000 and $68,460,000 at December 31, 2024 and 2023, respectively. During 2024, $1,014,000 of new loans were made and repayments totaled $46,772,000.

Credit Quality

Credit Quality	12 Months Ended
	Dec. 31, 2024
Text Block [Abstract]
Credit Quality	NOTE E--CREDIT Management monitors the credit quality of its loans and leases on an ongoing basis. Measurement of delinquency and past due status are based on the contractual terms of each loan. United considers a loan to be past due when it is 30 days or more past its contractual payment due date. For all loan classes, past due loans and leases are reviewed on a monthly basis to identify loans and leases for nonaccrual status. Generally, when collection in full of the principal and interest is jeopardized, the loan is placed on nonaccrual status. The accrual of interest income on commercial and most consumer loans generally is discontinued when a loan becomes 90 to 120 days past due as to principal or interest. However, regardless of delinquency status, if a loan is fully secured and in the process of collection and resolution of collection is expected in the near term (generally less than 90 days), then the loan will not be placed on nonaccrual status. When interest accruals are discontinued, unpaid interest recognized in income in the current year is reversed, and unpaid interest accrued in prior years is charged to the allowance for credit losses. United’s method of income recognition for loans and leases that are classified as nonaccrual is to recognize interest income on a cash basis or apply the cash receipt to principal when the ultimate collectability of principal is in doubt. Nonaccrual loans and leases will not normally be returned to accrual status unless all past due principal and interest has been paid and the borrower has evidenced their ability to meet the contractual provisions of the note. The following table sets forth United’s age analysis of its past due loans and leases, segregated by class of loans and leases: Age Analysis of Past Due Loans and Leases As of December 31, 2024 (In thousands) 30-89 90 Days or  Total Past  Current & Total Financing 90 Days or Commercial real estate: Owner-occupied $ 3,767 $ 1,284 $ 5,051 $ 1,584,951 $ 1,590,002 $ 0 Nonowner-occupied 11,931 23,379 35,310 6,904,331 6,939,641 0 Other commercial 5,594 19,019 24,613 3,326,749 3,351,362 431 Residential real estate 33,783 20,946 54,729 5,452,655 5,507,384 12,429 Construction & land development 390 4,265 4,655 3,504,379 3,509,034 1,677 Consumer: Bankcard 63 61 124 9,874 9,998 61 Other consumer 28,414 4,446 32,860 740,217 773,077 2,342 Total $    83,942 $    73,400 $    157,342 $    21,523,156 $    21,680,498 $    16,940 Age Analysis of Past Due Loans and Leases As of December 31, 2023 (In thousands) 30-89 90 Days or  Total Past  Current & Total Financing 90 Days or Past Due & Commercial real estate: Owner-occupied $ 6,361 $ 6,335 $ 12,696 $ 1,585,535 $ 1,598,231 $ 110 Nonowner-occupied 10,373 13,146 23,519 6,694,824 6,718,343 2,460 Other commercial 3,218 1,224 4,442 3,567,998 3,572,440 560 Residential real estate 26,523 12,136 38,659 5,232,577 5,271,236 6,244 Construction & land development 879 6,423 7,302 3,140,943 3,148,245 0 Consumer: Bankcard 145 127 272 9,690 9,962 127 Other consumer 36,451 6,107 42,558 1,012,170 1,054,728 5,078 Total $ 83,950 $ 45,498 $ 129,448 $ 21,243,737 $ 21,373,185 $ 14,579 The following table sets forth United’s nonaccrual loans and leases, segregated by class of loans and leases: At December 31, 2024 At December 31, 2023 (In thousands) Nonaccruals With No Nonaccruals With No Commercial Real Estate: Owner-occupied $ 1,284 $ 1,284 $ 6,225 $ 6,225 Nonowner-occupied 23,379 8,475 10,686 10,686 Other Commercial 18,588 584 664 664 Residential Real Estate 8,517 5,562 5,892 5,892 Construction 2,588 2,589 6,423 6,423 Consumer: Bankcard 0 0 0 0 Other consumer 2,104 2,104 1,029 1,029 Total $ 56,460 $ 20,598 $ 30,919 $ 30,919 Interest income recognized on nonaccrual loans was insignificant during the year ended December 31, 2024 and 2023. In some cases, United will modify a loan to a borrower experiencing financial difficulty by providing multiple types of concessions such as a term extension, principal forgiveness, an interest rate reduction or a combination thereof. The following table presents the amortized cost of loans and leases to borrowers experiencing financial difficulty modified during the years of 2024 and 2023, respectively, by class of financing receivable and by type of modification. The percentage of the amortized cost basis of loans and leases that were modified to borrowers experiencing financial difficulty as compared to the amortized cost basis of each class of financing receivable is also represented below. Amortized Cost Basis of L o For the Year ended December 31, 2024 Term  Interest Rate  Term Extension & Term Extension & Payment Delay % of Total Class of Commercial real estate: Owner-occupied $ 445 $ 0 $ 0 $ 0 0.03 % Nonowner-occupied 5,765 0 0 0 0.08 % Other commercial 0 0 2,400 0 0.00 % Residential real 185 0 0 168 0.06 % Construction & land development 52 0 0 0 0.00 % Consumer: Bankcard 0 0 0 0 0.00 % Other consumer 0 0 0 0 0.00 % Total $   6,447 $   0 $   2,400 $   168 0.04 % Amortized Cost Basis of Loan Modifications Made to Borrowers Experiencing Financial Difficulty For the Year ended December 31, 2023 Term  Interest Rate  Term Extension & Term Extension & % of Total Class of Commercial real estate: Owner-occupied $ 484 $ 0 $ 0 $ 0 0.03 % Nonowner-occupied 31,633 1,737 0 0 0.50 % Other commercial 165 0 0 0 0.00 % Residential real 506 0 0 0 0.01 % Construction & land development 0 0 0 0 0.00 % Consumer: Bankcard 0 0 0 0 0.00 % Other consumer 0 0 0 0 0.00 % Total $   32,788 $   1,737 $   0 $   0 0.16 % As of December 31, 2024, there was a commitment to lend additional funds of $1,199,000 to two debtors owing a loan receivable whose terms have been modified. United’s estimate of future credit losses uses a lifetime methodology, derived from modeled loan performance based on the extensive historical experience of loans with similar risk characteristics, adjusted to reflect current conditions and reasonable and supportable forecasts. The historical loss experience used in United’s credit loss models includes the impact of loan modifications provided to borrowers experiencing financial difficulty, and also includes the impact of projected loss severities as a result of loan defaults. United closely monitors the performance of the loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table presents the performance in the 12 months after a modification made to borrowers experiencing financial difficulty presented by class of financing receivable: Payment Status (Amortized Cost Basis) As of December 31, 2024 As of December 31, 2023 Current 30-89  Days Past  Due 90+  Days Past  Due Current 30-89  Days Past  Due 90+  Days Past  Due Commercial real estate: Owner-occupied $ 445 $ 0 $ 0 $ 484 $ 0 $ 0 Nonowner-occupied 1,366 4,399 0 33,370 0 0 Other commercial 2,400 0 0 65 100 0 Residential real estate 297 56 0 506 0 0 Construction & land development 52 0 0 0 0 0 Consumer: Bankcard 0 0 0 0 0 0 Other consumer 0 0 0 0 0 0 Total $ 4,560 $ 4,455 $ 0 $ 34,425 $ 100 $ 0 The following table presents the financial effect of loan and lease modifications to borrowers experiencing financial difficulty for the year ended December 31, 2024 and 2023. For the Year Ended December 31, 2024 December 31, 2023 Weighted- Average  Interest Rate  Reduction Weighted  Average Term  Extension (in years) Weighted- Average Weighted (in years) Commercial Real Estate: Owner-occupied   0.00 %   0.3   0.00 %   1.0 Nonowner-occupied 0.00 % 0.5 1.50 % 1.4 Other Commercial 1.00 % 0.3 0.00 % 1.8 Residential Real Estate 0.00 % 4.9 0.00 % 4.6 Construction & land development 0.00 % 4.5 0.00 % 0 Consumer: Bankcard 0.00 % 0 0.00 % 0 Other consumer   0.00 % 0 0.00 %   0 The following table presents loan or lease modifications completed within the last 12 months to borrowers experiencing financial difficulty had a payment default during the year ended December 31, 2024. No loan or lease modifications completed within the last 12 months to borrowers experiencing financial difficulty had a payment default during the year ended December 31, 2023. Amortized Cost Basis of Modified Loans That Subsequently Defaulted For the Year ended December 31, 2024 Term  Extension   Interest Rate  Reduction Term Extension & Interest Rate Reduction Term Extension & Payment Delay % of Total Class of  Financing Receivable  Commercial real estate: Owner-occupied $ 0 $ 0 $ 0 $ 0 0.00 % Nonowner-occupied 0 0 0 0 0.00 % Other commercial 0 0 0 0 0.00 % Residential real estate 0 0 0 0 0.00 % Construction & land development 0 0 0 674 0.02 % Consumer: Bankcard 0 0 0 0 0.00 % Other consumer 0 0 0 0 0.00 % Total $ 0 $ 0 $ 0 $ 674 0.00 % United elected the practical expedient to measure expected credit losses on collateral dependent loans and leases based on the difference between the loan’s amortized cost and the collateral’s fair value, adjusted for selling costs. The following table presents the amortized cost basis of collateral-dependent loans and leases in which repayment is expected to be derived substantially through the operation or sale of the collateral and where the borrower is experiencing financial difficulty, by class of loans and leases as of December 31, 2024 and December 31, 2023: Collateral Dependent Loans and Leases At December 31, 2024 (In thousands) Residential Business Land Commercial Other Total Commercial real estate: Owner-occupied $ 5 $ 0 $ 0 $ 3,119 $ 6,465 $ 9,589 Nonowner-occupied 7,037 0 0 23,975 2,367 33,379 Other commercial 0 15,816 0 5,041 528 21,385 Residential real estate 7,348 0 0 0 11 7,359 Construction & land development 0 0 2,492 0 873 3,365 Consumer: Bankcard 0 0 0 0 0 0 Other consumer 0 0 0 0 0 0 Total $ 14,390 $ 15,816 $ 2,492 $ 32,135 $ 10,244 $ 75,077 Collateral Dependent Loans and Leases At December 31, 2023 (In thousands) Residential Business Land Commercial Other Total Commercial real estate: Owner-occupied $ 27 $ 0 $ 0 $ 5,208 $ 9,272 $ 14,507 Nonowner-occupied 11,200 0 0 13,555 1,810 26,565 Other commercial 0 891 0 5,193 256 6,340 Residential real estate 9,775 0 0 0 0 9,775 Construction & land development 954 0 3,661 0 3,314 7,929 Consumer: Bankcard 0 0 0 0 0 0 Other consumer 0 0 0 0 0 0 Total $ 21,956 $ 891 $ 3,661 $ 23,956 $ 14,652 $ 65,116 United categorizes loans and leases into risk categories based on relevant information about the ability of borrowers to service their debt: current financial information, historical payment experience, credit documentation, underlying collateral (if any), public information and current economic trends, among other factors. United uses the following definitions for risk ratings: · Pass · Special Mention · Substandard · Doubtful For United’s loans with a corporate credit exposure, United analyzes loans individually to classify the loans as to credit risk. Review and analysis of criticized (special mention-rated loans in the amount of $1,000,000 or greater) and classified (substandard-rated and worse in the amount of $500,000 and greater) loans is completed once per quarter. Review of notes with committed exposure of $3,000,000 or greater is completed at least annually. For loans with a consumer credit exposure, United internally assigns a grade based upon an individual loan’s delinquency status. United reviews and updates, as necessary, these grades on a quarterly basis. Special mention loans, with a corporate credit exposure, 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 loans or in the Company’s credit position at some future date. Borrowers may be experiencing adverse operating trends (declining revenues or margins) or an ill proportioned balance sheet (e.g., increasing inventory without an increase in sales, high leverage, tight liquidity). Adverse economic or market conditions, such as interest rate increases or the entry of a new competitor, may also support a special mention rating. Nonfinancial reasons for rating a credit exposure special mention include management problems, pending litigation, an ineffective loan agreement or other material structural weakness, and any other significant deviation from prudent lending practices. For loans with a consumer credit exposure, loans that are past due 30-89 days are generally considered special mention. A substandard loan with a corporate credit exposure is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness, or weaknesses, that jeopardize the liquidation of the debt by the borrower. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. They require more intensive supervision by management. Substandard loans are generally characterized by current or expected unprofitable operations, inadequate debt service coverage, inadequate liquidity, or marginal capitalization. Repayment may depend on collateral or other credit risk mitigants. For some substandard loans, the likelihood of full collection of interest and principal may be in doubt and thus, placed on nonaccrual. For loans with a consumer credit exposure, loans that are 90 days or more past due or that have been placed on nonaccrual are considered substandard. A loan with corporate credit exposure is classified as doubtful if it has all the weaknesses inherent in one classified as substandard with the added characteristic that the weaknesses make collection in full, on the basis of currently existing facts, conditions, and values, highly questionable. A doubtful loan has a high probability of total or substantial loss, but because of specific pending events that may strengthen the loan, its classification as loss is deferred. Doubtful borrowers are usually in default, lack adequate liquidity or capital, and lack the resources necessary to remain an operating entity. Pending events can include mergers, acquisitions, liquidations, capital injections, the perfection of liens on additional collateral, the valuation of collateral, and refinancing. Generally, there are not any loans with a consumer credit exposure that are classified as doubtful. Usually, they are charged-off Based on the most recent analysis performed, the risk category of loans and leases as well as charge-offs and recoveries by class of loans is as follows. Loans originated in any year may be renewals of existing loans and not necessarily new loans. Commercial Real Estate – Owner-occupied Revolving loans converted to (In thousands) Term Loans Origination Year Revolving loans As of December 31, 2024 2024 2023 2022 2021 2020 Prior basis term loans Total Internal Risk Grade: Pass $ 236,547 $ 132,095 $ 243,103 $ 225,152 $ 205,461 $ 467,417 $ 29,900 $ 0 $ 1,539,675 Special Mention 0 0 0 0 0 15,199 8,545 0 23,744 Substandard 247 0 3,493 0 307 21,744 445 121 26,357 Doubtful 0 0 0 0 0 226 0 0 226 Total $ 236,794 $ 132,095 $ 246,596 $ 225,152 $ 205,768 $ 504,586 $ 38,890 $ 121 $ 1,590,002 Current-period charge-offs 0 0 0 0 0 (116 ) 0 0 (116 ) Current-period recoveries 0 0 15 0 0 1,168 0 0 1,183 Current-period net recoveries  $        0 $        0 $         15 $        0 $        0 $     1,052 $    0 $       0 $   1,067 (In thousands) Term Loans Origination Year Revolving loans Revolving loans and converted As of December 31, 2023 2023 2022 2021 2020 2019 Prior basis term loans Total Internal Risk Grade: Pass $ 132,376   $ 316,117   $ 246,635 $ 248,861 $ 109,182 $ 465,223 $ 29,619 $ 0 $ 1,548,013 Special Mention 0 0 0 0 2,460 15,423 125 0 18,008 Substandard 0 1,734 274 475 436 28,469 449 129 31,966 Doubtful 0 0 0 0 0 244 0 0 244 Total $ 132,376 $ 317,851 $ 246,909 $ 249,336 $ 112,078 $ 509,359 $  30,193 $ 129 $ 1,598,231 Current-period charge-offs 0 0 0 0 0 (855 ) 0 0 (855 ) Current-period recoveries 0 13 0 0 0 174 0 0 187 Current-period net recoveries (charge-offs) $        0 $        13 $          0 $       0 $       0 $     (681) $         0 $   0 $     (668) Commercial Real Estate – Nonowner-occupied (In thousands) Term Loans Origination Year Revolving loans Revolving loans As of December 31, 2024 2024 2023 2022 2021 2020 Prior basis term loans Total Internal Risk Grade: Pass $ 741,996 $ 485,437 $ 1,623,423 $ 1,294,232 $ 639,143 $ 1,584,833 $ 160,243 $ 78 $ 6,529,385 Special Mention 0 0 8,465 82,240 29,940 210,912 0 0 331,557 Substandard 0 0 4,085 4,020 143 48,633 21,818 0 78,699 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 741,996 $ 485,437 $ 1,635,973 $ 1,380,492 $ 669,226 $ 1,844,378 $ 182,061 $ 78 $ 6,939,641 Current-period charge-offs 0 0 0 0 (751 ) (1,830 ) 0 0 (2,581 ) Current-period recoveries 0 0 0 0 0 200 0 0 200 Current-period net recoveries (charge-offs) $ 0 $ 0 $ 0 $ 0 $ (751 ) $ (1,630 ) $ 0 $ 0 $ (2,381 ) (In thousands) Term Loans Origination Year Revolving loans basis Revolving loans and leases converted to As of December 31, 2023 Internal 2023 2022 2021 2020 2019 Prior Total Pass $ 455,399 $ 1,428,880 $ 1,587,315 $ 717,189 $ 695,492 $ 1,335,526 $ 228,743 $ 106 $ 6,448,650 Special Mention 0 4,614 2,381 25,437 43,017 104,997 30,651 0 211,097 Substandard 0 0 4,020 4,736 3,493 46,347 0 0 58,596 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 455,399 $ 1,433,494 $ 1,593,716 $ 747,362 $ 742,002 $ 1,486,870 $ 259,394 $ 106 $ 6,718,343 Current-period charge-offs 0 0 0 0 0 (24 ) 0 0 (24 ) Current-period recoveries 0 0 0 0 0 1,233 0 0 1,233 Current-period net recoveries $ 0 $ 0 $ 0 $ 0 $ 0 $ 1,209 $ 0 $ 0 $ 1,209 Other commercial (In thousands) Term Loans and leases Origination Year Revolving Revolving As of December 31, 2024 2024 2023 2022 2021 2020 Prior basis term loans Total Internal Risk Grade: Pass $ 403,641 $ 505,947 $ 378,072 $ 394,412 $ 164,671 $ 519,488 $ 912,293 $ 0 $ 3,278,524 Special Mention 81 36 1,129 339 251 18,941 4,652 0 25,429 Substandard 206 419 18,927 7,029 835 11,262 8,706 0 47,384 Doubtful 0 0 0 0 0 25 0 0 25 Total $ 403,928 $ 506,402 $ 398,128 $ 401,780 $ 165,757 $ 549,716 $ 925,651 $ 0 $ 3,351,362 Current-period charge-offs 0 (464 ) (252 ) (156 ) (148 ) (1,352 ) (1,217 ) 0 (3,589 ) Current-period recoveries 10 67 9 45 0 1,512 7 0 1,650 Current-period net (charge- offs) recoveries $ 10 $ (397 ) $ (243 ) $ (111 ) $ (148 ) $ 160 $ (1,210 ) $ 0 $ (1,939 ) (In thousands) Term Loans and leases Origination Year Revolving Revolving As of December 31, 2023 2023 2022 2021 2020 2019 Prior basis Total Internal Risk Grade: Pass $ 593,153 $ 596,258 $ 477,457 $ 197,173 $ 187,560 $ 447,430 $ 988,809 $ 13 $ 3,487,853 Special Mention 221 4,798 542 1,775 1,611 2,093 16,901 15 27,956 Substandard 1,059 16,248 306 792 660 11,923 25,597 0 56,585 Doubtful 0 0 0 0 0 46 0 0 46 Total $ 594,433 $ 617,304 $ 478,305 $ 199,740 $ 189,831 $ 461,492 $ 1,031,307 $ 28 $ 3,572,440 Current-period charge-offs (88 ) (163 ) (233 ) 0 (661 ) (567 ) (217 ) (78 ) (2,007 ) Current-period recoveries 0 0 0 0 25 1,699 5 0 1,729 Current-period net (charge- offs) recoveries $ (88 ) $ (163 ) $ (233 ) $ 0 $ (636 ) $ 1,132 $ (212 ) $ (78 ) $ (278 ) Residential Real Estate (In thousands) Term Loans Origination Year Revolving basis Revolving loans converted to term loans As of December 31, 2024 2024 2023 2022 2021 2020 Prior Total Internal Risk Grade: Pass $ 407,430 $ 820,059 $ 1,617,541 $ 827,395 $ 396,094 $ 971,226 $ 447,363 $ 2,467 $ 5,489,575 Special Mention 382 107 0 0 0 2,466 1,326 0 4,281 Substandard 0 0 0 508 0 12,430 507 83 13,528 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 407,812 $ 820,166 $ 1,617,541 $ 827,903 $ 396,094 $ 986,122 $ 449,196 $ 2,550 $ 5,507,384 Current-period charge-offs 0 (7 ) (2 ) 0 0 (359 ) (113 ) 0 (481 ) Current-period recoveries 0 0 0 5 0 489 1 0 495 Current-period net (charge- offs) recoveries $ 0 $ (7 ) $ (2 ) $ 5 $ 0 $ 130 $ (112 ) $ 0 $ 14 (In thousands) Term Loans Origination Year Revolving loans a mortized cost Revolving term loans As of December 31, 2023 2023 2022 2021 2020 2019 Prior basis Total Internal Risk Grade: Pass $ 783,866 $ 1,618,774 $ 850,760 $ 443,514 $ 262,524 $ 863,186 $ 423,302 $ 2,568 $ 5,248,494 Special Mention 0 0 0 0 65 3,561 1,710 0 5,336 Substandard 51 75 386 258 599 14,827 1,121 89 17,406 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 783,917 $ 1,618,849 $ 851,146 $ 443,772 $ 263,188 $ 881,574 $ 426,133 $ 2,657 $ 5,271,236 Current-period charge-offs 0 0 0 0 (785 ) 0 0 0 (785 ) Current-period recoveries 0 0 8 0 688 1 0 0 697 Current-period net recoveries (charge-offs) $ 0 $ 0 $ 8 $ 0 $ (97 ) $ 1 $ 0 $ 0 $ (88 ) Construction and Land Development (In thousands) Term Loans Origination Year Revolving loans Revolving loans term loans As of December 31, 2024 2024 2023 2022 2021 2020 Prior basis Total Internal Risk Grade: Pass $ 628,186 $ 837,662 $ 1,253,480 $ 426,662 $ 18,559 $ 18,542 $ 302,302 $ 0 $ 3,485,393 Special Mention 0 0 1,455 18,356 57 153 0 0 20,021 Substandard 0 0 0 200 1,607 1,813 0 0 3,620 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 628,186 $ 837,662 $ 1,254,935 $ 445,218 $ 20,223 $ 20,508 $ 302,302 $ 0 $ 3,509,034 Current-period charge-offs 0 0 0 0 0 (29 ) 0 0 (29 ) Current-period recoveries 0 0 0 0 0 319 0 0 319 Current-period net (charge- offs) recoveries $ 0 $ 0 $ 0 $ 0 $ 0 $ 290 $ 0 $ 0 $ 290 (In thousands) Term Loans Origination Year Revolving loans Revolving As of December 31, 2023 2023 2022 2021 2020 2019 Prior basis term loans Total Internal Risk Grade: Pass $ 628,047 $ 1,308,793 $ 827,138 $ 53,004 $ 16,062 $ 60,920 $ 239,390 $ 0 $ 3,133,354 Special Mention 0 2,902 0 62 3,386 258 0 0 6,608 Substandard 0 1,091 2,490 2,470 0 2,232 0 0 8,283 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 628,047 $ 1,312,786 $ 829,628 $ 55,536 $ 19,448 $ 63,410 $ 239,390 $ 0 $ 3,148,245 Current-period charge-offs 0 0 0 0 0 (14 ) 0 0 (14 ) Current-period recoveries 0 0 0 0 0 80 0 0 80 Current-period net recoveries $ 0 $ 0 $ 0 $ 0 $ 0 $ 66 $ 0 $ 0 $ 66 Bankcard Revolving loans converted to Term Loans Origination Year Revolving loans (In thousands) amortized As of December 31, 2024 2024 2023 2022 2021 2020 Prior basis term loans Total Internal Risk Grade: Pass  $        0 $        0 $        0 $        0 $        0 $        0 $ 9,874 $ 0 $   9,874 Special Mention 0 0 0 0 0 0 63 0 63 Substandard 0 0 0 0 0 0 61 0 61 Doubtful 0 0 0 0 0 0 0 0 0 Total  $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 9,998 $ 0 $ 9,998 Current-period charge-offs 0 0 0 0 0 0 (431 ) 0 (431 ) Current-period recoveries 0 0 0 0 0 0 19 0 19 Current-period net charge-offs  $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ (412 ) $ 0 $ (412 ) Revolving Term Loans Origination Year Revolving loans loans (In thousands) amortized cost     As of December 31, 2023 2023 2022 2021 2020 2019 Prior basis term loans Total Internal Risk Grade: Pass  $        0 $        0 $        0 $        0 $        0 $        0 $ 9,690 $ 0 $   9,690 Special Mention 0 0 0 0 0 0 145 0 145 Substandard 0 0 0 0 0 0 127 0 127 Doubtful 0 0 0 0 0 0 0 0 0 Total  $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 9,962 $ 0 $ 9,962 Current-period charge-offs 0 0 0 0 0 0 (263 ) 0 (263 ) Current-period recoveries 0 0 0 0 0 0 28 0 28 Current-period net charge-offs  $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ (235 ) $ 0 $ (235 ) Other Consumer Revolving Term Loans Origination Year Revolving loans loans (In thousands) amortized cost     As of December 31, 2024 2024 2023 2022 2021 2020 Prior basis term loans Total Internal Risk Grade: Pass  $  139,908 $ 131,108 $ 276,041 $ 118,478 $ 49,553 $ 22,913 $ 2,215 $ 0 $ 740,216 Special Mention 495 1,805 13,462 8,485 2,704 1,440 23 0 28,414 Substandard 76 182 2,454 1,106 358 261 10 0 4,447 Doubtful 0 0 0 0 0 0 0 0 0 Total  $ 140,479 $ 133,095 $ 291,957 $ 128,069 $ 52,615 $ 24,614 $ 2,248 $ 0 $ 773,077 Current-period charge-offs (28 ) (206 ) (5,724 ) (3,096 ) (869 ) (380 ) 0 0 (10,303 ) Current-period recoveries 0 21 402 241 125 330 0 0 1,119 Current-period net charge-offs  $ (28 ) $ (185 ) $ (5,322 ) $ (2,855 ) $ (744 ) $ (50 ) $ 0 $ 0 $ (9,184 ) Revolving Term Loans Origination Year Revolving loans loans (In thousands) amortized cost     As of December 31, 2023 2023 2022 2021 2020 2019 Prior basis term loans Total Internal Risk Grade: Pass  $  192,184 $  428,295 $ 205,015 $ 102,300 $ 62,861 $ 18,876 $ 2,638 $ 0 $ 1,012,169 Special Mention 674 16,031 12,220 4,454 2,050 977 46 0 36,452 Substandard 0 3,010 2,207 647 126 96 21 0 6,107 Doubtful 0 0 0 0 0 0 0 0 0 Total  $ 192,858 $ 447,336 $ 219,442 $ 107,401 $ 65,037 $ 19,949 $ 2,705 $ 0 $ 1,054,728 Current-period charge-offs (9 ) (3,205 ) (2,699 ) (933 ) (319 ) (191 ) 0 0 (7,356 ) Current-period recoveries 0 219 125 54 54 235 0 0 687 Current-period net (charge-  $ (9 ) $ (2,986 ) $ (2,574 ) $ (879 ) $ (265 ) $ 44 $ 0 $ 0 $ (6,669 )

Allowance for Credit Losses

Allowance for Credit Losses	12 Months Ended
	Dec. 31, 2024
Receivables [Abstract]
Allowance for Credit Losses	N OTE F—ALLOWANCE FOR CREDIT LOSSES The allowance for loan losses is an estimate of the expected credit losses on financial assets measured at amortized cost to present the net amount expected to be collected as of the balance sheet date. Such allowance is based on the credit losses expected to arise over the life of the asset (contractual term). Assets are charged off when United determines that such financial assets are deemed uncollectible or based on regulatory requirements, whichever is earlier. Charge-offs are recognized as a deduction from the allowance for credit losses. Expected recoveries of amounts previously charged-off, charged-off, United made a policy election to present the accrued interest receivable balance separately in its consolidated balance sheets from the amortized cost of a loan. Accrued interest receivable was $87,062,000 and $88,963,000 at December 31, 2024 and December 31, 2023, respectively, related to loans and leases are included separately in “Accrued interest receivable” in the consolidated balance sheets. For all classes of loans and leases receivable, the accrual of interest is discontinued when the contractual payment of principal or interest has become 90 days past due, unless the loan is well secured and in the process of collection. Interest received on nonaccrual loans and leases, generally is either applied against principal or reported as interest income, according to management’s judgment as to the collectability of principal. The following table represents the accrued interest receivable as of December 31, 2024 and December 31, 2023: Accrued Interest Receivable (In thousands) At December 31, 2024 At December 31, 2023 Commercial Real Estate: Owner-occupied $ 4,700 $ 4,751 Nonowner-occupied 30,582 27,507 Other Commercial 10,512 14,562 Residential Real Estate 21,662 20,718 Construction 17,174 18,504 Consumer: Bankcard 0 0 Other consumer 2,432 2,921 Total $ 87,062 $ 88,963 The following table represents the accrued interest receivables written off by reversing interest income for the year ended December 31, 2024 and December 31, 2023: Accrued Interest Receivables Written Off (In thousands) Year Ended 2024 2023 Commercial Real Estate: Owner-occupied $ 186 $ 31 Nonowner-occupied 853 85 Other Commercial 736 39 Residential Real Estate 232 214 Construction 23 285 Consumer: Bankcard 0 0 Other consumer 345 371 Total $ 2,375 $ 1,025 United maintains an allowance for loan losses and a reserve for lending-related commitments such as unfunded loan commitments and letters of credit. For a detailed discussion of the methodology used to estimate the reserve for lending-related commitments, see Note A, “Summary of Significant Accounting Policies.” The reserve for lending-related commitments of $34,911,000 and $44,706,000 at December 31, 2024 and December 31, 2023, respectively, is separately classified on the balance sheet and is included in other liabilities. The combined allowance for loan losses and reserve for lending-related commitments is considered the allowance for credit losses. United continuously evaluates any risks which may impact its loan and lease portfolios. Reserves are initially determined based on losses identified from the PD/LGD and Cohort models which utilize the Company’s historical information. Then any qualitative adjustments are applied to account for the Company’s view of the future and other factors. If current conditions underlying any qualitative adjustment factor were deemed to be materially different than historical conditions, then an adjustment was made for that factor. United’s allowance for loan and lease losses at December 31, 2024 increased $12,607,000 or 4.86% from December 31, 2023. The increase in the allowance for loan and lease losses was primarily driven by increased outstanding loan balances for the real estate construction and development and residential real estate loan segments as well as increased reasonable and supportable forecast adjustments for the commercial real estate nonowner-occupied loan segment. The year of 2024 qualitative adjustments include analyses of the following: · Current conditions · Reasonable and supportable forecasts Ø The forecast for real GDP shifted slightly in the fourth quarter, from a projection of 2.00% for 2025 as of mid-September 2024 to 2.10% for 2025 as of mid-December with a projection of 2.00% for 2026. The unemployment rate forecast also shifted slightly in the fourth quarter from a projection of 4.40% for 2025 as of mid-September 2024 to 4.30% for 2025 as of mid-December with a projection of 4.30% for 2026. Ø Greater risk of loss in the office portfolio due to continued hybrid and remote work that may be exacerbated by future economic conditions. Ø Reversion to historical loss data occurs via a straight-line method during the year following the one-year reasonable and supportable forecast period. A progression of the allowance for loan losses, by portfolio segment, for the periods indicated is summarized as follows: Allowance for Loan and Lease Losses and Carrying Amount of Loans and Leases For the Year Ended December 31, 2024 (In thousands) Commercial Real Other Residential Construction & Bankcard Total Owner- Nonowner- Other Allowance for Loan and Lease Losses: Beginning balance $ 11,895 $ 57,935 $ 75,007 $ 41,167 $ 59,913 $ 810 $ 12,510 $ 259,237 Charge-offs (116) (2,581) (3,589) (481) (29) (431) (10,303) (17,530) Recoveries 1,183 200 1,650 495 319 19 1,119 4,985 Provision (1,110) 18,968 (7,963) 5,192 3,418 493 6,154 25,152 Ending balance $ 11,852 $ 74,522 $ 65,105 $ 46,373 $ 63,621 $ 891 $ 9,480 $ 271,844 Allowance for Loan and Lease Losses and Carrying Amount of Loans and Leases For the Year Ended December 31, 2023 (In thousands) Commercial Real Other Residential Construction & Bankcard Total Owner- Nonowner- Other Allowance for Loan and Lease Losses: Beginning balance $ 13,945 $ 38,543 $ 79,706 $ 36,227 $ 48,390 $ 561 $ 17,374 $ 234,746 Charge-offs (855) (24) (2,007) (785) (14) (263) (7,356) (11,304) Recoveries 187 1,233 1,729 697 80 28 687 4,641 Provision (1,382) 18,183 (4,421) 5,028 11,457 484 1,805 31,154 Ending balance $ 11,895 $ 57,935 $ 75,007 $ 41,167 $ 59,913 $ 810 $ 12,510 $ 259,237 A progression of the allowance for credit losses, which includes the allowance for loan losses and the reserve for lending-related commitments, for the periods presented is summarized as follows: Year Ended December 31 (In thousands) 2024 2023 2022 Balance of allowance for loan and lease losses at beginning of period $ 259,237 $ 234,746 $ 216,016 Gross charge-offs (17,530 ) (11,304 ) (9,650 ) Recoveries 4,985 4,641 9,549 Net charge-offs (12,545 ) (6,663 ) (101 ) Provision for loan and lease losses 25,152 31,154 18,831 Balance of allowance for loan and lease losses at end of period $ 271,844 $ 259,237 $ 234,746 Reserve for lending-related commitments 34,911 44,706 46,189 Balance of allowance for credit losses at end of period $ 306,755 $ 303,943 $ 280,935

Bank Premises and Equipment

Bank Premises and Equipment	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Bank Premises and Equipment	NOTE G—BANK PREMISES AND EQUIPMENT Bank premises and equipment are summarized as follows: December 31 (In thousands) 2024 2023 Land $ 62,506 $ 62,506 Buildings and improvements 206,281 204,841 Leasehold improvements 43,971 42,752 Furniture, fixtures and equipment 109,510 118,514 422,268 428,613 Less allowance for depreciation and amortization (236,137 ) (238,093 ) Bank premises and equipment $ 186,131 $ 190,520 Depreciation expense was $15,709,000, $17,191,000, and $18,237,000 for years ending December 31, 2024, 2023 and 2022, respectively, while amortization expense was $310,000, $310,000 and $343,000 for the years ended December 31, 2024, 2023 and 2022, respectively.

Leases

Leases	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Leases	NOTE H—LEASES United determines if an arrangement is a lease at inception. United and certain subsidiaries have entered into various noncancelable-operating leases for branch and loan production offices as well as operating facilities. Operating leases are included in operating lease right-of-use (“ROU”) assets and operating lease liabilities on the Consolidated Balance Sheets. Operating leases with an initial term of 12 months or less are not recorded on the Consolidated Balance Sheets. Presently, United does not have any finance leases. United’s operating leases are subject to renewal options under various terms. United’s operating leases have remaining terms of 1 to 14 years, some of which include options to extend leases generally for periods of 5 years. United rents or subleases certain real estate to third parties. Our sublease portfolio generally consists of operating leases to other organizations for former branch offices. ROU assets represent United’s right to use an underlying asset for the lease term and lease liabilities represent United’s obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of United’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Lease terms may include options to extend the lease when it is reasonably certain that United will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. The components of lease expense were as follows: Year Ended Year Ended (In thousands) Classification December 31, December 31, Operating lease cost Net occupancy expense $ 20,367 $ 21,280 Sublease income Net occupancy expense (184 ) (244 ) Net lease cost $ 20,183 $ 21,036 Supplemental balance sheet information related to leases was as follows: (In thousands) Classification December 31, December 31, Operating lease right-of-use assets Operating lease right-of-use assets $ 81,742 $ 86,986 Operating lease liabilities Operating lease liabilities $ 86,771 $ 92,885 Other information related to leases was as follows: December 31, Weighted-average remaining lease term: Operating leases 7.46 years Weighted-average discount rate: Operating leases 3.18 % Supplemental cash flow information related to leases was as follows: Year Ended (In thousands) December 31, 2024 December 31, 2023 Cash paid for amounts in the measurement of lease liabilities: Operating cash flows from operating leases $ 19,900 $ 21,581 ROU assets obtained in the exchange for lease liabilities 8,896 33,403 Maturities of lease liabilities by year and in the aggregate, under operating leases with initial or remaining terms of one year or more, for years subsequent to December 31, 2024, consists of the following: Year Amount (Dollars in thousands) 2025 $ 17,115 2026 15,501 2027 13,597 2028 11,628 2029 9,700 Thereafter 30,807 Total lease payments 98,348 Less: imputed interest (11,577 ) Total $ 86,771

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	NOTE I—INTANGIBLE ASSETS The following is a summary of intangible assets subject to amortization and those not subject to amortization: December 31, 2024 Community Banking Total (In thousands) Gross Carrying Accumulated Gross Carrying Accumulated Amortized intangible assets: Core deposit intangible assets $ 105,165 ($ 96,299 ) $ 105,165 ($ 96,299 ) Community Banking Total (In thousands) Gross Carrying Accumulated Gross Carrying Accumulated Goodwill not subject to amortization $ 1,888,889 $ 1,888,889 December 31, 2023 Community Banking Mortgage Banking Total (In thousands) Gross Accumulated Gross Accumulated Gross Accumulated Amortized intangible assets: Core deposit intangible assets $ 105,165 ($ 92,660 ) $ 0 $ 0 $ 105,165 ($ 92,660 ) Goodwill not subject to amortization $ 1,883,574 $ 5,315 $ 1,888,889 The following table sets forth the anticipated amortization expense for intangible assets for the years subsequent to 2024: Year Amount (Dollars in thousands) 2025 $ 3,282 2026 2,758 2027 1,152 2028 560 2029 535 2030 and thereafter 579

Mortgage Servicing Rights

Mortgage Servicing Rights	12 Months Ended
	Dec. 31, 2024
Servicing Asset [Abstract]
Mortgage Servicing Rights	NOTE J—MORTGAGE SERVICING RIGHTS Mortgage loans serviced for others are not included in the accompanying Consolidated Balance Sheets. The value of mortgage servicing rights (“MSRs”) is included on the Company’s Consolidated Balance Sheets. During the third quarter of 2024, United sold its remaining MSRs at a net gain of $7,086,000. The unpaid principal balances of loans serviced for others was approximately $1,202,448,000 at December 31, 2023. Because of the sale of its remaining MSRs during the third quarter of 2024, there was no estimated fair value of the MSRs at December 31, 2024. The estimated fair value of the mortgage servicing rights was $13,427,000 at December 31, 2023. The estimated fair value of servicing rights at December 31, 2023 was determined using a net servicing fee of 0.25%, average discount rates ranging from 10.50% to 10.82% with a weighted average discount rate of 10.58%, average constant prepayment rates (“CPR”) ranging from 7.84% to 10.25% with a weighted average prepayment rate of 9.43%, depending upon the stratification of the specific servicing right, and a delinquency rate, including loans on forbearance of 3.29%. Please refer to Note W in these Notes to Consolidated Financial Statements for additional information concerning the fair value of MSRs. The following presents the activity in mortgage servicing rights, including their valuation allowance for the year ended December 31, 2024 and 2023: (In thousands) Year Ended December 31, 2024 Year Ended December 31, 2023 MSRs beginning balance $ 4,554 $ 21,022 Amount sold (3,934 ) (15,001 ) Amount capitalized 0 715 Amount amortized (620 ) (2,182 ) MSRs ending balance $ 0 $ 4,554 MSRs valuation allowance beginning balance $ 0 $ 0 Aggregate additions charged and recoveries credited to operations 0 0 MSRs impairment 0 0 MSRs valuation allowance ending balance $ 0 $ 0 MSRs, net of valuation allowance $ 0 $ 4,554 In determining impairment, the Company aggregated all servicing rights and stratified them into tranches based on predominant risk characteristics. The estimated amortization expense was based on information regarding future loan payments and prepayments.

Deposits

Deposits	12 Months Ended
	Dec. 31, 2024
Deposits [Abstract]
Deposits	NOTE K—DEPOSITS The book value of deposits consisted of the following: December 31 (In thousands)  2024   2023  Noninterest-bearing accounts $ 6,135,413 $ 6,149,080 Interest-bearing transaction accounts 5,936,925 5,648,135 Regular savings 1,250,295 1,345,258 Interest-bearing money market accounts 7,056,897 6,349,453 Time deposits under $100,000 1,172,462 1,066,092 Time deposits over $100,000 2,409,867 2,261,301 Total deposits $ 23,961,859 $ 22,819,319 Included in time deposits over $100,000 at December 31, 2024 and 2023 were time deposits of $250,000 or more of $1,115,748,000 and $842,118,000, respectively. Interest paid on deposits approximated $537,661,000, $377,008,000, and $77,271,000 in 2024, 2023 and 2022, respectively. United’s subsidiary banks have received deposits, in the normal course of business, from the directors and officers of United and its subsidiaries, and their associates. Such related party deposits were accepted on substantially the same terms, including interest rates and maturities, as those prevailing at the time for comparable transactions with unrelated persons. The aggregate dollar amount of these deposits was $34,197,000 and $47,857,000 at December 31, 2024 and 2023, respectively.

Short-Term Borrowings

Short-Term Borrowings	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Short-Term Borrowings	NOTE L—SHORT-TERM BORROWINGS At December 31, 2024 and 2023, short-term borrowings were as follows: December 31 (In thousands)  2024   2023  Federal funds purchased $ 0 $ 0 Securities sold under agreements to repurchase 176,090 196,095 Total short-term borrowings $ 176,090 $ 196,095 Federal funds purchased and securities sold under agreements to repurchase have not been a significant source of funds for the company. United has various unused lines of credit available from certain of its correspondent banks in the aggregate amount of $280,000,000. These lines of credit, which bear interest at prevailing market rates, permit United to borrow funds in the overnight market, and are renewable annually subject to certain conditions. At December 31, 2024, all the repurchase agreements were in overnight accounts. The rates offered on these funds vary according to movements in the federal funds and short-term United has a $20,000,000 line of credit with an unrelated financial institution to provide for general liquidity needs. The line is an unsecured, revolving line of credit. The line is renewable on a 360 day basis and carries an indexed, floating-rate of interest. The line requires compliance with various financial and nonfinancial covenants. At December 31, 2024, United had no outstanding balance under this credit. Interest paid on short-term borrowings approximated $8,063,000, $6,390,000, and $1,747,000 in 2024, 2023 and 2022, respectively.

Long-Term Borrowings

Long-Term Borrowings	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Long-Term Borrowings	NOTE M—LONG-TERM BORROWINGS United’s subsidiary bank is a member of the Federal Home Loan Bank (“FHLB”). Membership in the FHLB makes available short-term and long-term borrowings from collateralized advances. All FHLB borrowings are collateralized by a mix of single-family residential mortgage loans, commercial loans and investment securities. At December 31, 2024, the total carrying value of loans pledged as collateral for FHLB advances approximated $7,408,250,000. United had an unused borrowing amount as of December 31, 2024 of approximately $8,144,327,000 available subject to delivery of collateral after certain trigger points. Advances may be called by the FHLB or redeemed by United based on predefined factors and penalties. At December 31, 2024 and 2023, FHLB advances and the related weighted-average interest rates were as follows: 2024 2023 (Dollars in thousands)  Amount  Weighted- Weighted-  Amount  Weighted- Weighted- FHLB advances $ 260,199 4.62 % 0.63 % $ 1,510,487 5.43 % 3.75 % No overnight funds were included in the $260,199,000 and $1,510,487,000 above at December 31, 2024 and 2023, respectively. At December 31, 2024, FHLB advances of $260,199,000 mature in 2025. The weighted-average effective rate considers the effect of any interest rate swaps designated as cash flow hedges outstanding at year-end 2024 and 2023 to manage interest rate risk on its long-term debt. Additional information is provided in Note S, Notes to Consolidated Financial Statements. At December 31, 2024, United had a total of twenty statutory business trusts that were formed for the purpose of issuing or participating in pools of trust preferred capital securities (“Capital Securities”) with the proceeds invested in junior subordinated debt securities (“Debentures”) of United. The Debentures, which are subordinate and junior in right of payment to all present and future senior indebtedness and certain other financial obligations of United, are the sole assets of the trusts and United’s payment under the Debentures is the sole source of revenue for the trusts. United assumed $10,000,000 in aggregate principal amount of fixed-to-floating rate subordinated notes in the Carolina Financial Corporation acquisition. During the first quarter of 2023, United redeemed these fixed-to-floating rate subordinated notes. At December 31, 2024 and 2023, the outstanding balance of the Debentures was $280,221,000 and $278,616,000, respectively, and was included the category of long-term debt on the Consolidated Balance Sheets entitled “Other long-term borrowings.” The Capital Securities are not included as a component of shareholders’ equity in the Consolidated Balance Sheets. United fully and unconditionally guarantees each individual trust’s obligations under the Capital Securities. Under the provisions of the subordinated debt, United has the right to defer payment of interest on the subordinated debt at any time, or from time to time, for periods not exceeding five years. If interest payments on the subordinated debt are deferred, the dividends on the Capital Securities are also deferred. Interest on the subordinated debt is cumulative. In accordance with the fully-phased in “Basel III Capital Rules” as published by United’s primary federal regulator, the Federal Reserve, United is unable to consider the Capital Securities as Tier 1 capital, but rather the Capital Securities are included as a component of United’s Tier 2 capital. United can include the Capital Securities in its Tier 2 capital on a permanent basis. Information related to United’s statutory trusts is presented in the table below: (Dollars in thousands) Description Issuance Date Amount of Stated Interest Rate (1) Maturity Date United Statutory Trust III December 17, 2003 $ 20,000 3-month CME Term SOFR + 2.85% December 17, 2033 United Statutory Trust IV December 19, 2003 $ 25,000 3-month CME Term SOFR + 2.85% January 23, 2034 United Statutory Trust V July 12, 2007 $ 50,000 3-month CME Term SOFR + 1.55% October 1, 2037 United Statutory Trust VI September 20, 2007 $ 30,000 3-month CME Term SOFR + 1.30% December 15, 2037 Premier Statutory Trust II September 25, 2003 $ 6,000 3-month CME Term SOFR + 3.10% October 8, 2033 Premier Statutory Trust III May 16, 2005 $ 8,000 3-month CME Term SOFR + 1.74% June 15, 2035 Premier Statutory Trust IV June 20, 2006 $ 14,000 3-month CME Term SOFR + 1.55% September 23, 2036 Premier Statutory Trust V December 14, 2006 $ 10,000 3-month CME Term SOFR + 1.61% March 1, 2037 Centra Statutory Trust I September 20, 2004 $ 10,000 3-month CME Term SOFR + 2.29% September 20, 2034 Centra Statutory Trust II June 15, 2006 $ 10,000 3-month CME Term SOFR + 1.65% July 7, 2036 VCBI Capital Trust II December 19, 2002 $ 15,000 6-month CME Term SOFR + 3.30% December 19, 2032 VCBI Capital Trust III December 20, 2005 $ 25,000 3-month CME Term SOFR + 1.42% February 23, 2036 Cardinal Statutory Trust I July 27, 2004 $ 20,000 3-month CME Term SOFR + 2.40% September 15, 2034 UFBC Capital Trust I December 30, 2004 $ 5,000 3-month CME Term SOFR + 2.10% March 15, 2035 Carolina Financial Capital Trust I December 19, 2002 $ 5,000 Prime + 0.50% December 31, 2032 Carolina Financial Capital Trust II November 5, 2003 $ 10,000 3-month CME Term SOFR + 3.05% January 7, 2034 Greer Capital Trust I October 12, 2004 $ 6,000 3-month CME Term SOFR + 2.20% October 18, 2034 Greer Capital Trust II December 28, 2006 $ 5,000 3-month CME Term SOFR + 1.73% January 30, 2037 First South Preferred Trust I September 26, 2003 $ 10,000 3-month CME Term SOFR + 2.95% September 30, 2033 BOE Statutory Trust I December 12, 2003 $ 4,000 3-month CME Term SOFR + 3.00% December 12, 2033 (1) The 3-month CME Term SOFR rates have a spread adjustment of 0.26161% and the 6-month CME Term SOFR rate has a spread adjustment of 0.42826%. At December 31, 2024 and 2023, the Debentures and their related weighted-average interest rates were as follows: 2024 2023 (Dollars in thousands) Amount Weighted- Amount Weighted- United Statutory Trust III  $ 20,619 7.46 %  $ 20,619 8.49 % United Statutory Trust IV 25,774 7.70 % 25,774 8.50 % United Statutory Trust V 51,547 6.40 % 51,547 7.21 % United Statutory Trust VI 30,928 5.92 % 30,928 6.95 % Premier Statutory Trust II 6,186 8.02 % 6,186 8.76 % Premier Statutory Trust III 8,248 6.95 % 8,248 7.39 % Premier Statutory Trust IV 14,433 6.15 % 14,433 7.17 % Premier Statutory Trust V 10,310 6.37 % 10,310 7.25 % Centra Statutory Trust I 10,000 6.91 % 10,000 7.92 % Centra Statutory Trust II 10,000 6.57 % 10,000 7.31 % Virginia Commerce Trust II 13,627 8.31 % 13,397 8.88 % Virginia Commerce Trust III 19,899 6.20 % 19,373 7.06 % Cardinal Statutory Trust I 16,812 7.02 % 16,414 8.05 % UFBC Capital Trust I 4,076 6.72 % 3,971 7.75 % Carolina Financial Capital Trust I 5,046 8.00 % 5,034 9.00 % Carolina Financial Capital Trust II 9,641 7.97 % 9,572 8.71 % Greer Capital Trust I 5,419 7.09 % 5,341 7.86 % Greer Capital Trust II 4,275 6.58 % 4,184 7.38 % First South Preferred Trust I 9,587 7.54 % 9,513 8.54 % BOE Statutory Trust I 3,794 7.59 % 3,772 8.59 % Total $ 280,221 6.88 % $ 278,616 7.75 % At December 31, 2024, the scheduled maturities of long-term borrowings were as follows: Year Amount (Dollars in thousands) 2025  $ 260,199 2026 0 2027 0 2028 0 2029 0 2030 and thereafter 280,221 Total  $  540,420 Interest paid on long-term borrowings approximated $44,911,000, $84,775,000, and $19,143,000 in 2024, 2023 and 2022, respectively.

Other Expense

Other Expense	12 Months Ended
	Dec. 31, 2024
Other Income and Expenses [Abstract]
Other Expense	NOTE N—OTHER EXPENSE The following details certain items of other expense for the periods indicated: Year Ended December 31 (In thousands) 2024 2023 2022 Legal, consulting & other professional services  $  24,330  $  25,604  $  24,403 Franchise & other taxes not on income 16,916 16,202 13,537 Expense for reserve on lending-related commitments (9,795 ) (1,483 ) 14,747 Automated Teller Machine (“ATM”) expenses 11,885 10,914 10,250 Amortization of income tax credits 15,277 15,238 13,567

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	NOTE O—INCOME TAXES The income tax provisions included in the consolidated statements of income are summarized as follows: Year Ended December 31 (In thousands) 2024 2023 2022 Current expense: Federal  $  77,347  $  84,441  $  86,799 State 17,604 15,972 16,244 Deferred expense (benefit): Federal 334 (2,053 ) (6,016 ) State (3,702 ) (868 ) (871 ) Total income taxes  $ 91,583  $ 97,492  $ 96,156 The following is a reconciliation of income tax expense to the amount computed by applying the statutory federal income tax rate to income before income taxes: Year Ended December 31 (Dollars in thousands) 2024 2023 2022 Amount % Amount % Amount % Tax on income before taxes at statutory federal rate  $  97,562 21.0 %  $  97,399 21.0 %  $  99,914 21.0 % Plus: State income taxes net of federal tax benefits 13,591 2.9 11,847 2.6 12,431 2.6 111,153 23.9 109,246 23.6 112,345 23.6 Increase (decrease) resulting from: Tax-exempt interest income (2,439 ) (0.5 ) (2,974 ) (0.6 ) (3,477 ) (0.7 ) Tax credits (16,520 ) (3.5 ) (15,196 ) (3.3 ) (14,326 ) (3.0 ) Other items-net (611 ) (0.2 ) 6,416 1.3 1,614 0.3 Income taxes  $ 91,583 19.7 %  $ 97,492 21.0 %  $ 96,156 20.2 % For year ended 2024 and 2023, United incurred a federal income tax benefit of $2,456,000 and $1,608,000, respectively, as compared to federal income tax expense Taxes not on income, which consists mainly of business franchise taxes, were $16,916,000, $16,202,000, and $13,537,000, for the years ended December 31, 2024, 2023 and 2022, respectively. These amounts are recorded in other expense in the Consolidated Statements of Income. Significant components of United’s deferred tax assets and liabilities (included in other assets in the Consolidated Balance Sheets) at December 31, 2024 and 2023 are as follows: (In thousands) 2024 2023 Deferred tax assets: Allowance for credit losses  $ 73,315  $ 70,818 Accrued benefits payable 20,256 18,287 Other accrued liabilities 1,857 2,857 Unrealized loss on securities available for sale 77,189 84,683 Other real estate owned 127 512 Lease liabilities under operating leases 20,738 21,642 Income tax credit carryforward 4,415 0 Deferred mortgage points 425 2,081 Total deferred tax assets 198,322 200,880 Deferred tax liabilities: Premises and equipment 8,307 8,789 Right-of-use assets under operating leases 19,536 20,267 Pension plan accruals 10,743 7,251 Derivatives 10,487 12,137 Purchase accounting intangibles 6,626 5,940 Other 1,063 1,497 Total deferred tax liabilities 56,762 55,881 Net deferred tax assets  $ 141,560  $ 144,999 At December 31, 2024 and 2023, United believes that all of the deferred tax amounts shown above are more likely than not to be realized based on an assessment of all available positive and negative evidence and therefore no valuation allowance has been recorded. In accordance with ASC Topic 740, “Income Taxes,” United records a liability for uncertain income tax positions based on a recognition threshold of more-likely-than-not, and a measurement attribute for all tax positions taken on a tax return, in order for those tax positions to be recognized in the financial statements. Below is a reconciliation of the total amounts of unrecognized tax benefits: December 31 (In thousands) 2024 2023 Unrecognized tax benefits at beginning of year  $ 2,599  $ 2,521 Increase in unrecognized tax benefits as a result of tax positions taken during the current period 323 242 Decreases in the unrecognized tax benefits as a result of a lapse of the applicable statute of limitations (778 ) (164 ) Unrecognized tax benefits at end of year  $ 2,144  $ 2,599 The entire amount of unrecognized tax benefits, if recognized, would impact United’s effective tax rate. Over the next 12 months, the statute of limitations will close on certain income tax returns. However, at this time, United cannot reasonably estimate the amount of tax benefits, if any, it may recognize over the next 12 months. United is currently open to audit under the statute of limitations by the Internal Revenue Service for the years ended December 31, 2021, 2022 and 2023 and certain State Taxing authorities for the years ended December 31, 2021 through 2023. As of December , , and , the amount of accrued interest related to uncertain tax positions was $ and $ , respectively. United accounts for interest and penalties related to uncertain tax positions as part of its provision for federal and state income taxes. interest or penalties were recognized in the results of operations for the years of , and .

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2024
Retirement Benefits [Abstract]
Employee Benefit Plans	NOTE P—EMPLOYEE BENEFIT PLANS United has a defined benefit retirement plan covering qualified employees. Pension benefits are based on years of service and the average of the employee’s highest five consecutive plan years of basic compensation paid during the ten plan years preceding the date of determination. Contributions by United are intended to provide not only for benefits attributed to service to date, but also for those expected to be earned in the future. In September of 2007, after a recommendation by United’s Pension Committee and approval by United’s Board of Directors, the United Bankshares, Inc. Pension Plan (the “Plan”) was amended to change the participation rules. The decision to change the participation rules for the Plan followed industry trends, as many large and medium size companies took similar steps. The amendment provided that employees hired on or after October 1, 2007, will not be eligible to participate in the Plan. However, new employees will continue to be eligible to participate in United’s Savings and Stock Investment 401(k) plan. This change had no impact on employees hired prior to October 1, 2007 as they will continue to participate in the Plan, with no change in benefit provisions, and will continue to be eligible to participate in United’s Savings and Stock Investment 401(k) Plan. Net periodic pension costs, except for service cost, are recognized in employee benefits on the consolidated statements of income. Service cost is recognized in employee compensation. Net consolidated periodic pension cost included the following components: (Dollars in thousands) Year Ended December 31, 2024 2023 2022 Service cost  $ 1,387  $ 1,440  $ 2,669 Interest cost 6,967 7,134 4,988 Expected return on plan assets (10,659 ) (11,762 ) (12,942 ) Amortization of net actuarial loss 2,315 3,347 3,645 Net periodic pension cost (income)  $ 10  $ 159  $ (1,640 ) Weighted-Average Assumptions: Discount rate 5.07 % 5.26 % 3.08 % Expected return on assets 6.25 % 7.25 % 6.25 % Rate of compensation increase (prior to age 40) 5.00 % 5.00 % 5.00 % Rate of compensation increase (ages 40-54) 4.00 % 4.00 % 4.00 % Rate of compensation increase (otherwise) 3.50 % 3.50 % 3.50 % Amounts related to the Plan recognized as a component of other comprehensive income were as follows: (In thousands) Year Ended December 31,  2024   2023   2022  Net actuarial gain  $ (12,348 )  $ (2,635 )  $ (2,195 ) Amortization of actuarial loss (2,315 ) (3,347 ) (3,645 ) Total recognized in other comprehensive income  $ (14,663 )  $ (5,982 )  $ (5,840 ) Included in accumulated other comprehensive income at December 31, 2024 are unrecognized actuarial losses of $17,884,000 ($9,645,000 net of tax) that have not yet been recognized in net periodic pension cost. The reconciliation of the beginning and ending balances of the projected benefit obligation and the fair value of plan assets for the years ended December 31, 2024 and 2023 and the accumulated benefit obligation at December 31, 2024 and 2023 are as follows: (Dollars in thousands) December 31,  2024   2023  Change in Projected Benefit Obligation Projected Benefit Obligation at the Beginning of the Year  $   143,306  $   140,609 Service Cost 1,387 1,440 Interest Cost 6,967 7,134 Actuarial (Gain) Loss (7,506 ) 4,918 Lump Sum Window Payments 0 (4,546 ) Benefits Paid (6,307 ) (6,249 ) Projected Benefit Obligation at the End of the Year  $ 137,847  $ 143,306 Accumulated Benefit Obligation at the End of the Year  $ 125,429  $ 131,758 Change in Plan Assets Fair Value of Plan Assets at the Beginning of the Year  $ 173,840  $ 165,320 Actual Return on Plan Assets 15,502 19,315 Lump Sum Window Payments 0 (4,546 ) Benefits Paid (6,307 ) (6,249 ) Fair Value of Plan Assets at End of Year  $ 183,035  $ 173,840 Net Amount Recognized Funded Status  $ 45,187  $ 30,534 Unrecognized Actuarial Net Loss 17,884 32,548 Net Amount Recognized  $ 63,071  $ 63,082 Weighted-Average Assumptions at the End of the Year Discount Rate 5.76 % 5.07 % Rate of compensation Increase (prior to age 40) 6.00 % 5.00 % Rate of compensation Increase (ages 40-49) 5.50 % —  Rate of compensation Increase (ages 50-54) 5.00 % —  Rate of compensation Increase (ages 40-54) —  4.00 % Rate of compensation Increase (ages 55-64) 4.00 % —  Rate of compensation Increase (otherwise) 3.00 % 3.50 % Asset allocation for the defined benefit pension plan as of the measurement date, by asset category, is as follows: Plan Assets Target Allocation 2025 Allowable Allocation Range Percentage of Plan Assets at December 31, December 31, Equity Securities 48 % 20-70 % 56% 56% Fixed Income Securities 42 % 20-50 % 41% 41% Other 10 % 0-25 % 3% 3% Total 100% 100% Equity securities include United common stock in the amounts of $3,974,000 (4%) at December 31, 2024 and $3,974,000 (4%) at December 31, 2023 . The policy, as established by the Pension Committee, primarily consisting of United’s Executive Management, is to invest assets based upon the target allocations stated above. The assets are reallocated periodically to meet the above target allocations. The investment policy is reviewed at least annually, subject to the approval of the Pension Committee, to determine if the policy should be changed. Prohibited investments include, but are not limited to, futures contracts, private placements, uncovered options, real estate, the use of margin, short sales, derivatives for speculative purposes, and other investments that are speculative in nature. In order to achieve a prudent level of portfolio diversification, the securities of any one company are not to exceed 10% of the total plan assets, and no more than the 15% of total plan assets is to be invested in any one industry (other than securities of U.S. Government or Agencies). Additionally, no more than 15% of the plan assets is to be invested in foreign securities, both equity and fixed. The expected long-term rate of return for the plan’s total assets is based on the expected return of each of the above categories, weighted based on the median of the target allocation for each class. United uses the corridor approach based on 10% of the greater of the projected benefit obligation and the market-related value of plan assets to amortize actuarial gains and losses. At December 31, 2024, the benefits expected to be paid in each of the next five fiscal years, and in the aggregate for the five years thereafter are as follows: Year  Amount  (Dollars in thousands) 2025 $ 7,361 2026 7,381 2027 7,775 2028 8,274 2029 8,633 2030 through 2034 47,114 United did not contribute to the plan in 2024, 2023 or in 2022 as no contributions were required by funding regulations or law. For 2025, no contributions to the plan are required by funding regulations or law. However, United may make a discretionary contribution in 2025, the amount of which cannot be reasonably estimated at this time. In accordance with ASC Topic 715 and using the guidance contained in ASC Topic 820, the following is a description of the valuation methodologies used to measure the plan assets at fair value. Cash and Cash Equivalents: Debt Securities Common and Preferred Stock: Mutual Funds: The following tables present the balances of the plan assets, by fair value hierarchy level, as of December 31, 2024 and 2023: Fair Value Measurements at December 31, 2024 Using (In thousands) Description Balance as of December 31, Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Cash and Cash equivalents  $ 5,829  $ 5,829  $ 0  $ 0 Fixed Income Debt Securities: U.S. Government and agencies 24,874 24,874 0 0 Mortgage backed securities 6,588 6,588 0 0 Collateralized mortgage obligations 623 623 Municipal obligations 707 707 0 0 Corporate bonds 8,394 8,394 0 0 Fixed Income Mutual Funds: General 33,537 33,537 0 0 Fair Value Measurements at December 31, 2024 Using (In thousands) Description Balance as of December 31, Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Equity Securities: Common stock 19,539 19,539 0 0 Equity Mutual Funds: Domestic equity large cap 37,990 37,990 0 0 Domestic equity small cap 13,332 13,332 0 0 Alternative equity 16,145 16,145 International emerging equity 3,993 3,993 0 0 International equity developed 11,484 11,484 0 0 Total  $   183,035  $   183,035  $   0  $   0 Fair Value Measurements at December 31, 2023 Using (In thousands) Description Balance as of December 31, Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Cash and Cash equivalents  $ 4,565  $ 4,565  $ 0  $ 0 Fixed Income Debt Securities: U.S. Government and agencies 20,052 20,052 0 0 Mortgage backed securities 7,440 7,440 0 0 Municipal obligations 1,551 1,551 0 0 Corporate bonds 8,030 8,030 0 0 Fixed Income Mutual Funds: General 34,083 34,083 0 0 Equity Securities: Common stock 23,868 23,868 0 0 Equity Mutual Funds: Domestic equity large cap 29,894 29,894 0 0 Domestic equity small cap 13,256 13,256 0 0 Alternative equity 15,376 15,376 International emerging equity 3,990 3,990 0 0 International equity developed 11,735 11,735 0 0 Total  $   173,840  $   173,840  $   0  $   0 Common stock investments are diversified amongst various industries with no industry representing more than 5% of the total plan assets. The United Bankshares, Inc. Savings and Stock Investment Plan (the Plan) is a defined contribution plan under Section 401(k) of the Internal Revenue Code. Each employee of United, who completes ninety (90) days of qualified service, is eligible to participate in the Plan. Each participant may contribute from 1% to 100% of compensation to his/her account, subject to Internal Revenue Service maximum deferral limits. United matches 100% of the first 5% of salary deferred with United stock, subject to certain imposed limitations. Vesting is 100% for employee deferrals and the company match at the time the employee makes his/her deferral. United’s expense relating to the Plan approximated $7,332,000, $7,590,000, and $8,242,000 in 2024, 2023 and 2022, respectively. The assets of United’s defined benefit plan and 401(k) Plan each include investments in United common stock. At December 31, 2024 and 2023, the combined plan assets included 1,810,400 and 1,828,171 shares, respectively, of United common stock with an approximate fair value of $67,981,000 and $68,648,000, respectively. Dividends paid on United common stock held by the plans approximated $2,727,000, $2,468,000, and $2,340,000 for the years ended December 31, 2024, 2023, and 2022, respectively. United has certain other supplemental deferred compensation plans covering various key employees. Periodic charges are made to operations so that the liability due each employee is fully recorded as of the date of their retirement. Amounts charged to expense have not been significant in any year.

Stock Based Compensation

Stock Based Compensation	12 Months Ended
	Dec. 31, 2024
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Based Compensation	NOTE Q—STOCK BASED COMPENSATION On May 12, 2020, United’s shareholders approved the 2020 Long-Term Incentive Plan (“2020 LTI Plan”). The 2020 LTI Plan became effective May 13, 2020. An award granted under the 2020 LTI Plan may consist of any non-qualified stock options or incentive stock options, stock appreciation rights (“SARs”), restricted stock, restricted stock units, performance units or other-stock-based award. These awards all relate to the common stock of United. The maximum number of shares of United common stock which may be issued under the 2020 LTI Plan is 2,300,000. The 2020 LTI Plan will be administered by a board committee appointed by United’s Board of Directors (the “Board”). Unless otherwise determined by the Board, the Compensation Committee of the Board (the “Committee”) shall administer the 2020 LTI Plan. The maximum number of options and stock appreciation rights, in the aggregate, which may be awarded to any individual key employee during any calendar year is 100,000. The maximum number of options and stock appreciation rights, in the aggregate, which may be awarded to any non-employee director during any calendar year is 10,000 or, if such Award is payable in cash, the Fair Market Value equivalent thereof. The maximum number of shares of restricted stock or shares subject to a restricted stock units award that may be granted during any calendar year is 225,000 shares to any individual key employee and 10,000 shares to any individual non-employee director. Subject to certain change in control provisions, the 2020 LTI Plan provides that all awards of will vest as the Committee determines in the award agreement, provided that no awards will vest sooner than 1/3 per year over the first three anniversaries of the award. United adopted a clawback policy that applies to named executive officers and other executive officers and permits the Committee to cancel certain awards and to recoup gains realized from previous awards should United be required to prepare an accounting restatement due to materially inaccurate performance metrics. A Form S-8 was filed on May 29, 2020 with the Securities and Exchange Commission to register all the shares which were available for the 2020 LTI Plan. The 2020 LTI Plan replaces the 2016 LTI Plan. During the year of 2024, a total of 184,458 shares of restricted stock and 254,592 of restricted stock units were granted under the 2020 LTI Plan. No non-qualified stock options were granted under the 2020 LTI Plan during the year of 2024. Compensation expense of $12,130,000, $12,463,000, and $9,881,000 related to all share-based grants and awards under United’s Long-Term Incentive Plans was incurred for the years 2024, 2023 and 2022, respectively. Compensation expense was included in employee compensation in the Consolidated Statements of Income. Stock Options United currently has options outstanding from various option plans other than the 2020 LTI Plan (the “Prior Plans”); however, no common shares of United stock are available for grants under the Prior Plans as these plans have expired. Awards outstanding under the Prior Plans will remain in effect in accordance with their respective terms. The maximum term for options granted under the plans is ten (10) years. A summary of activity under the United’s stock option plans as of December 31, 2024, and the changes during the year of 2024 are presented below: Year ended December 31, 2024 Weighted Average (Dollars in thousands, except per share amounts) Aggregate Remaining Exercise Shares Value Term (Yrs.) Price Outstanding at January 1, 2024 1,337,382 $ 35.47 Exercised (183,888 ) 30.18 Forfeited or expired (103,826 ) 36.54 Outstanding at December 31, 2024 1,049,668  $  3,275 3.2  $  36.29 Exercisable at December 31, 2024 1,049,668  $  3,275 3.2  $  36.29 The following table summarizes the status of United’s nonvested awards for the year ended December 31, 2024: Shares Weighted-Average Nonvested at January 1, 2024 56,526  $ 5.65 Vested (56,526 )    5.65 Forfeited or expired 0    0.00 Nonvested at December 31, 2024 0  $ 0.00 As of December 31, 2024, there was no unrecognized compensation cost related to nonvested option awards. The total fair value of awards vested during the year ended December 31, 2024, was $319,000. Cash received from options exercised under the Plans for the years ended December 31, 2024, 2023 and 2022 was $5,274,000, $1,750,000, and $10,295,000, respectively. During 2024 and 2023, 183,888 and 75,361 shares, respectively, were issued in connection with stock option exercises. All shares issued in connection with stock option exercises for 2024 and 2023 were issued from authorized and unissued stock. No options were granted in 2024, ASC Topic 230, “Statement of Cash Flows,” requires the benefits of tax deductions in excess of recognized compensation cost to be reported as an operating cash flow. This requirement reduces net operating cash flows. While the company cannot estimate what those amounts will be in the future (because they depend on, among other things, the date employees exercise stock options), United recognized cash flows used in operating activities of $258,000, $128,000, and $1,040,000 from excess tax benefits related to share-based compensation arrangements for the year of 2024, 2023 and 2022, respectively. Restricted Stock Under the 2020 LTI Plan, United may award restricted common shares to key employees and non-employee directors. Restricted shares granted to participants will vest no sooner than 1/3 per year over the first three The following summarizes the changes to United’s restricted common shares for the year ended December 31, 2024: Number of Weighted-Average Outstanding at January 1, 2024 333,932  $ 37.75 Granted 184,458   34.37 Vested (198,950 )   36.49 Forfeited (9,413 )   36.67 Outstanding at December 31, 2024 310,027  $ 36.58 Restricted Stock Units Under the 2020 LTI Plan, United may grant restricted stock units (“RSUs”) to key employees. These awards help align the interests of these employees with the interests of the shareholders of United by providing economic value directly related to the performance of the Company. These RSU grants could be time-vested RSUs, performance-vested RSUs, or a combination of both. Currently, time-vested RSUs vest ratably over three years from the date of grant. Performance-vested RSUs cliff-vest after assessment of the Company’s performance over a period of three years. The number of performance-vested RSUs that vest is determined by two metrics measured relative to peers: Return on Average Tangible Common Equity (“ROATCE”) and Total Shareholder Return (“TSR”). Based on ASC Topic 718, the ROATCE comparison is considered a performance condition while the TSR comparison is considered a market condition. There will be no payout of the performance-vested awards if the threshold performance is not achieved. United communicates the specific threshold, target, and maximum performance-vested RSU awards and performance targets to the applicable key employees at the beginning of a performance period. Dividends are accrued but not paid in respect to the awards until the RSUs vest. The holder does not have the right to vote the shares during the time and performance periods. The value of the time-vested RSUs and the performance-vested, based on the performance condition, RSUs awarded is established as the fair market value of the stock at the time of the grant. The value of the performance-vested, based on the market condition, RSUs awarded is estimated through the use of a Monte Carlo valuation model as of the grant date. The Company recognizes expense on the RSUs in accordance with ASC Topic 718. The following table summarizes the status of United’s nonvested RSUs during the year ended December 31, 2024: Shares Weighted-Average Nonvested at January 1, 2024 363,502  $  37.53 Granted 254,592     32.80 Vested (127,536 )     36.28 Forfeited or expired (439 )     34.72 Nonvested at December 31, 2024 490,119  $  35.41 As of December 31, 2024, the total unrecognized compensation cost related to nonvested restricted stock units was $8,500,000 with a weighted-average expense recognition period of 1.2 years.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	NOTE R—COMMITMENTS AND CONTINGENT LIABILITIES Lending-related Commitments United is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers and to alter its own exposure to fluctuations in interest rates. These financial instruments include loan commitments, standby letters of credit, and interest rate swap agreements. The instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the financial statements. United’s maximum exposure to credit loss in the event of nonperformance by the counterparty to the financial instrument for the loan commitments and standby letters of credit is the contractual or notional amount of those instruments. United uses the same policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Collateral may be obtained, if deemed necessary, based on management’s credit evaluation of the counterparty. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the commitment contract. Commitments generally have fixed expiration dates or other termination clauses and may require the payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily, and historically do not, represent future cash requirements. The amount of collateral obtained, if deemed necessary upon the extension of credit, is based on management’s credit evaluation of the counterparty. United had approximately $5,886,473,000 and $6,851,890,000 of loan commitments outstanding as of December 31, 2024 and December 31, 2023, respectively, approximately 38% of which contractually expire within one year. Excluded in the December 31, 2023 amount above are commitments to extend credit of $416,095,000 related to mortgage loan funding commitments. Commercial and standby letters of credit are agreements used by United’s customers as a means of improving their credit standing in their dealings with others. Under these agreements, United guarantees certain financial commitments of its customers. A commercial letter of credit is issued specifically to facilitate trade or commerce. Typically, under the terms of a commercial letter of credit, a commitment is drawn upon when the underlying transaction is consummated as intended between the customer and a third party. As of December 31, 2024 and December 31, 2023, United had $15,546,000 and $16,233,000 of commercial letters of credit outstanding. A standby letter of credit is generally contingent upon the failure of a customer to perform according to the terms of an underlying contract with a third party. United has issued standby letters of credit of $148,874,000 and $147,705,000 as of December 31, 2024 and December 31, 2023, respectively. In accordance with the Contingencies Topic of the FASB Accounting Standards Codification, United has determined that substantially all of its letters of credit are renewed on an annual basis and the fees associated with these letters of credit are immaterial. Mortgage Banking Related to its mortgage banking activities, United provides for its estimated exposure to repurchase loans previously sold to investors for which borrowers failed to provide full and accurate information on their loan application or for which appraisals have not been acceptable or where the loan was not underwritten in accordance with the loan program specified by the loan investor, and for other exposure to its investors related to loan sales activities. United evaluates the merits of each claim and estimates its reserve based on actual and expected claims received and considers the historical amounts paid to settle such claims. United’s repurchase reserve was immaterial as of December 31, 2024 and December 31, 2023. United has derivative counter-party risk that may arise from the possible inability of United’s third party investors to meet the terms of their forward sales contracts. United’s third-party investors that are generally well-capitalized, are investment grade and exhibit strong financial performance to mitigate this risk. United does not expect any third-party investor to fail to meet its obligation. Legal Proceedings United and its subsidiaries are currently involved in various legal proceedings in the normal course of business. On at least a quarterly basis, United assesses its liabilities and contingencies in connection with all pending or threatened claims and litigation, utilizing the most recent information available. On a matter-by-matter basis, an accrual for loss is established for those matters which United believes it is probable that a loss may be incurred and that the amount of such loss can be reasonably estimated. Once established, each accrual is adjusted as appropriate to reflect any subsequent developments. Accordingly, management’s estimate will change from time to time, and actual losses may be more or less than the current estimate. For matters where a loss is not probable, or the amount of the loss cannot be estimated, no accrual is established. Management is vigorously pursuing all its legal and factual defenses and, after consultation with legal counsel, believes that all such litigation will be resolved with no material effect on United’s financial statements. Regulatory Matters A variety of consumer products, including mortgage and deposit products, and certain fees and charges related to such products, have come under increased regulatory scrutiny. It is possible that regulatory authorities could bring enforcement actions, including civil money penalties, or take other actions against United in regard to these consumer products. United could also determine of its own accord, or be required by regulators, to refund or otherwise make remediation payments to customers in connection with these products. It is not possible at this time for management to assess the probability of a material adverse outcome or reasonably estimate the amount of any potential loss related to such matters.

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	NOTE S—DERIVATIVE FINANCIAL INSTRUMENTS United uses derivative instruments to help aid against adverse price changes or interest rate movements on the value of certain assets or liabilities and on future cash flows. These derivatives may consist of interest rate swaps, caps, floors, collars, futures, forward contracts, written and purchased options. United also executes derivative instruments with its commercial banking customers to facilitate its risk management strategies. During 2020, United entered into two interest rate swap derivatives designated as cash flow hedges. The notional amount of these cash flow hedge derivatives totaled $500,000,000. The derivatives are intended to hedge the changes in cash flows associated with floating rate FHLB borrowings. One of these two interest rate swap derivatives matured during the third quarter of 2024. As of December 31, 2024, United has determined that no forecasted transactions related to its cash flow hedges resulted in gains or losses pertaining to cash flow hedge reclassification from AOCI to income because the forecasted transactions became probable of not occurring. United estimates that $9,131,000 will be reclassified from AOCI as a decrease to interest expense over the next 12-months following December 31, 2024 related to the cash flow hedges. As of December 31, 2024, the maximum length of time over which forecasted transactions are hedged is six years. United is subject to the Dodd-Frank Act clearing requirement for eligible derivatives. United has executed and cleared eligible derivatives through the London Clearing House (“LCH”). Variation margin at the LCH is distinguished as settled-to-market and settled daily based on the prior day value, rather than collateralized-to-market. The daily settlement of the derivative exposure does not change or reset the contractual terms of the instrument. The total notional amount of interest rate swap derivatives designated as cash flow hedges cleared through the LCH include $250,000,000 for asset derivatives as of December 31, 2024. Balances related to LCH are presented as a single unit of account with the fair value of the designated cash flow interest rate swap asset being reduced by variation margin posted by (with) the applicable counterparty and reported in the following table on a net basis. The related fair value on a net basis approximates zero. The following tables disclose the derivative instruments’ location on the Company’s Consolidated Balance Sheets and the notional amount and fair value of those instruments at December 31, 2024 and December 31, 2023. Asset Derivatives December 31, 2024 December 31, 2023 (In thousands) Balance Sheet Location Notional Amount Fair Value Balance Sheet Location Notional Amount Fair Value Derivatives designated as hedging instruments Fair Value Hedges: Interest Other assets  $ 10,770  $ 644 Other assets  $ 12,032  $ 611 Total Fair Value Hedges  $ 10,770  $ 644  $ 12,032  $ 611 Cash Flow Hedges: Interest rate swap contracts (hedging FHLB borrowings) Other assets  $ 250,000  $ 0 Other assets  $ 500,000  $ 0 Total Cash Flow Hedges  $ 250,000  $ 0  $ 500,000  $ 0 Total derivatives designated as hedging instruments  $ 260,770  $ 644  $ 512,032  $ 611 Derivatives not designated as hedging instruments Forward loan sales commitments Other assets  $ 0  $ 0 Other assets  $ 3,880  $ 93 TBA mortgage-backed securities Other assets 54,826 278 Other assets 0 0 Interest rate lock commitments Other assets 21,553 339 Other assets 99,278 1,144 Total derivatives not designated as hedging instruments  $ 76,379  $ 617  $ 103,158  $ 1,237 Total asset derivatives  $ 337,149  $ 1,261  $ 615,190  $ 1,848 Liability Derivatives December 31, 2024 December 31, 2023 Balance Sheet Location Notional Amount Fair Value Balance Sheet Location Notional Amount Fair Value Derivatives not designated as hedging instruments TBA mortgage-backed securities Other liabilities  $ 0  $ 0 Other liabilities  $ 77,115  $ 678 Forward loan sales commitments Other liabilities 3,186 20 Other liabilities 0 0 Total derivatives not designated as hedging instruments  $ 3,186  $ 20  $ 77,115  $ 678 Total liability derivatives  $ 3,186  $ 20  $ 77,115  $ 678 The following table represents the carrying amount of the hedged assets/(liabilities) and the cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged assets/(liabilities) that are designated as a fair value accounting relationship as of December 31, 2024 and December 31, 2023. December 31, 2024 (In thousands) Derivatives in Fair Value Hedging Relationships Location in the Statement of Carrying Amount of Cumulative Amount Cumulative Amount of Interest rate swaps Loans, net of unearned income  $ 10,770  $  (657)  $   0 December 31, 2023 (In thousands) Derivatives in Fair Value Hedging Relationships Location in the Statement Carrying Amount of Assets/(Liabilities) Cumulative Amount Cumulative Amount of Interest rate swaps Loans, net of unearned income  $  12,032  $  (632)  $   0 Derivative contracts involve the risk of dealing with both bank customers and institutional derivative counterparties and their ability to meet contractual terms. Credit risk arises from the possible inability of counterparties to meet the terms of their contracts. United’s exposure is limited to the replacement value of the contracts rather than the notional amount of the contract. The Company’s agreements generally contain provisions that limit the unsecured exposure up to an agreed upon threshold. Additionally, the Company attempts to minimize credit risk through certain approval processes established by management. The effect of United’s derivative financial instruments on its Consolidated Statements of Income for the years ended December 31, 2024, 2023 and 2022 is presented as follows: Year Ended (In thousands) Income Statement Location December 31, December 31, December 31, Derivatives in hedging relationships Cash Flow Hedges: Interest rate swap contracts Interest on long-term (1) $ 20,932 $ 23,574 $ 5,782 Fair Value Hedges: Interest rate swap contracts Interest and fees on loans and leases $ 8 $ 117 $ (177) Total derivatives in hedging relationships $ 20,940 $ 23,691 $ 5,605 Derivatives not designated as hedging instruments Forward loan sales commitments Income from Mortgage Banking Activities (114 ) (127 ) (174 ) TBA mortgage-backed securities Income from Mortgage Banking Activities 956 (611 ) 276 Interest rate lock commitments Income from Mortgage Banking Activities (489 ) (240 ) (8,373 ) Total derivatives not designated as hedging instruments $ 353 $ (978 ) $ (8,271 ) Total derivatives $ 21,293 $ 22,713 $ (2,666 ) (1) Decreases or increases in interest expense are expressed as positive or negative amounts, respectively, based on their impact to net income. For the years ended December 31, 2024, 2023 and 2022, changes in the fair value of any interest rate swaps attributed to hedge ineffectiveness were recorded, but were not significant to United’s Consolidated Statements of Income.

Comprehensive Income

Comprehensive Income	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Comprehensive Income	NOTE T--COMPREHENSIVE The changes in accumulated other comprehensive income are as follows: For the Years Ended December 31 (In thousands) 2024 2023 2022 Net Income  $   372,996  $   366,313  $ 379,627 Available for sale (“AFS”) securities: Change in net unrealized gains (losses) on AFS securities arising during the period 24,251 98,627 (481,007 ) Related income tax effect (5,840 ) (22,980 ) 112,075 Net reclassification adjustment for losses (gains) included in net income 16,296 7,659 (2 ) Related income tax effect (3,852 ) (1,785 ) 0 30,855 81,521 (368,934 ) Net effect of AFS securities on other comprehensive income 30,855 81,521 (368,934 ) Cash flow hedge derivatives: Unrealized gain on cash flow hedge before reclassification to interest expense 12,744 6,548 53,572 Related income tax effect (2,987 ) (1,526 ) (12,482 ) Net reclassification adjustment for gains included in net income (20,932 ) (23,574 ) (5,782 ) Related income tax effect 4,926 5,493 1,347 Net effect of cash flow hedge derivatives on other comprehensive income (6,249 ) (13,059 ) 36,655 Defined benefit pension plan: Net actuarial gain during the period 12,348 2,635 2,195 Related income tax expense (2,951 ) (613 ) (512 ) Amortization of net actuarial loss recognized in net income 2,315 3,347 3,645 Related income tax effect (540 ) (780 ) (893 ) Net effect of change in defined benefit pension plan on other comprehensive income 11,172 4,589 4,435 Total change in other comprehensive income, net of tax 35,778 73,051 (327,844 ) Total Comprehensive Income  $     408,774  $   439,364  $   51,783 The components of accumulated other comprehensive income for the year ended December 31, 2024 are as follows: Changes in Accumulated Other Comprehensive Income (AOCI) by Component (a) For the Year Ended December 31, 2024 (Dollars in thousands) Unrealized Unrealized Defined Items Total Balance at January 1, 2024 $ (278,819) $ 39,955 $ (20,817) $ (259,681) Other comprehensive income before reclassification 18,411 9,757 0 28,168 Amounts reclassified from accumulated other comprehensive income 12,444 (16,006 ) 11,172 7,610 Net current-period other comprehensive income (loss), net of tax 30,855 (6,249 ) 11,172 35,778 Balance at December 31, 2024 $ (247,964) $ 33,706 $ (9,645) $ (223,903) (a) All amounts are net-of-tax. Reclassifications out of Accumulated Other Comprehensive Income (AOCI) For the Year Ended December 31, 2024 (In thousands) Details about AOCI Components Amount Reclassified from AOCI Affected Line Item in the Statement Where Net Income is Presented Available for sale (“AFS”) securities: Net reclassification adjustment for losses included in net income $ 16,296 Net investment securities losses 16,296 Total before tax Related income tax effect (3,852 ) Tax expense 12,444 Net of tax Cash flow hedge: Net reclassification adjustment for gains included in net income $ (20,932 ) Interest expense (20,932 ) Total before tax Related income tax effect 4,926 Tax expense (16,006 ) Net of tax Pension plan: Recognized net actuarial gain 12,348  (a) Amortization of net actuarial loss 2,315  (b) 14,663 Total before tax Related income tax effect (3,491 ) Tax expense 11,172 Net of tax Total reclassifications for the period $ 7,610 (a)   This AOCI component is included in the computation of changes in plan assets (see Note P, Employee Benefit Plans) (b)   This AOCI component is included in the computation of net periodic pension cost (see Note P, Employee Benefit Plans)

United Bankshares, Inc. (Parent

United Bankshares, Inc. (Parent Company Only) Financial Information	12 Months Ended
	Dec. 31, 2024
Condensed Financial Information Disclosure [Abstract]
United Bankshares, Inc. (Parent Company Only) Financial Information	NOTE U--UNITED Condensed Balance Sheets December 31 (In thousands) 2024 2023 Assets Cash and due from banks $ 249,515 $ 238,256 Securities available for sale 5,663 5,846 Securities held to maturity 20 20 Equity securities 15,897 3,735 Other investment securities 11,400 20,704 Investment in subsidiaries: Bank subsidiaries 5,024,692 4,818,320 Nonbank subsidiaries 55,755 54,556 Goodwill (16,715 ) (16,715 ) Other assets 32,152 28,315 Total Assets $ 5,378,379 $ 5,153,037 Liabilities and Shareholders’ Equity Junior subordinated debentures of subsidiary trusts $ 280,221 $ 278,617 Accrued expenses and other liabilities 104,935 103,180 Shareholders’ equity (including other accumulated comprehensive losses of $223,903 and $259,681 at December 31, 2024 and 2023, respectively) 4,993,223 4,771,240 Total Liabilities and Shareholders’ Equity $ 5,378,379 $ 5,153,037 Condensed Statements of Income Year Ended December 31 (In thousands) 2024 2023 2022 Income Dividends from banking subsidiaries $ 231,000 $ 217,000 $ 272,500 Net interest income 933 970 446 Management fees: Bank subsidiaries 48,307 43,852 35,931 Nonbank subsidiaries 51 27 27 Other income 5,064 2,167 3,053 Total Income 285,355 264,016 311,957 Condensed Statements of Income Year Ended December 31 (In thousands) 2024 2023 2022 Expenses Operating expenses 80,922 67,968 50,242 Income Before Income Taxes and Equity in Undistributed Net Income of Subsidiaries 204,433 196,048 261,715 Applicable income tax benefit (5,589 ) (4,521 ) (2,196 ) Income Before Equity in Undistributed Net Income of Subsidiaries 210,022 200,569 263,911 Equity in undistributed net income of subsidiaries: Bank subsidiaries 169,778 170,997 117,594 Nonbank subsidiaries (6,804 ) (5,253 ) (1,878 ) Net Income $ 372,996 $ 366,313 $ 379,627 Condensed Statements of Cash Flows Year Ended December 31 (In thousands) 2024 2023 2022 Operating Activities Net income $ 372,996 $ 366,313 $ 379,627 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiaries (162,974 ) (165,744 ) (115,716 ) Amortization of net periodic pension costs 141 204 220 Stock-based compensation 12,130 12,463 9,881 Excess tax benefits from stock-based compensation arrangements 258 128 1,040 Net change in other assets and liabilities (5,925 ) (5,420 ) (6,118 ) Net Cash Provided by Operating Activities 216,626 207,944 268,934 Investing Activities Net proceeds from sales (purchases) of debt securities 183 338 (426 ) Net proceeds from sales (purchases) of equity securities 130 (1,303 ) 4,186 Increase in investment in subsidiaries (8,000 ) (16,000 ) (13,000 ) Change in other investment securities (1,187 ) (1,525 ) (6,144 ) Net Cash Used in Investing Activities (8,874 ) (18,490 ) (15,384 ) Financing Activities Repayment of subordinated notes 0 (10,250 ) 0 Cash dividends paid (200,727 ) (194,727 ) (193,041 ) Acquisition of treasury stock (1,040 ) (1,382 ) (79,460 ) Proceeds from exercise of stock options 5,274 1,750 10,295 Net Cash Used in Financing Activities (196,493 ) (204,609 ) (262,206 ) Increase (Decrease) in Cash and Cash Equivalents 11,259 (15,155 ) (8,656 ) Cash and Cash Equivalents at Beginning of Year 238,256 253,411 262,067 Cash and Cash Equivalents at End of Year $ 249,515 $ 238,256 $ 253,411

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2024
Deposits [Abstract]
Regulatory Matters	NOTE V--REGULATORY United Bank maintains average reserve balances with its Federal Reserve Bank. The average amount of those consolidated reserve balances maintained for the year ended December 31, 2024 and 2023 were approximately $1,184,007,000 and $813,480,000, respectively. No reserve balance for the year ended December 31, 2024 and 2023 was required. The primary source of funds for the dividends paid by United to its shareholders is dividends received from United Bank. Dividends paid by United Bank are subject to certain regulatory limitations. Generally, the most restrictive provision requires regulatory approval if dividends declared in any year exceed that year’s net income, as defined, plus the retained net profits of the two preceding years. During 2025, the retained net profits available for distribution to United by United Bank as dividends without regulatory approval, are approximately $340,775,000, plus net income for the interim period through the date of declaration. Under Federal Reserve regulation, United Bank is also limited as to the amount they may loan to affiliates, including the parent company. Loans from United Bank to the parent company are limited to 10% of the banking subsidiaries’ capital and surplus, as defined, or $395,066,000 at December 31, 2024, and must be secured by qualifying collateral. United’s subsidiary banks are subject to various regulatory capital requirements administered by federal banking agencies. Pursuant to capital adequacy guidelines, United’s subsidiary banks must meet specific capital guidelines that involve various quantitative measures of the banks’ assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices. United’s subsidiary banks’ capital amounts and classifications are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. As previously mentioned, in December 2017, the Basel Committee published standards that it described as the finalization of the Basel III post-crisis regulatory reforms. The quantitative measures established by the Basel III regulation to ensure capital adequacy require United and United Bank to maintain minimum amounts and ratios of total, Tier I capital, and common Tier I capital as defined in the regulations, to risk-weighted assets, as defined, and of Tier I capital, as defined, to average assets, as defined. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on United’s financial statements. As of December 31, 2024, United exceeds all capital adequacy requirements to which it is subject. At December 31, 2024, the most recent notification from its regulators, United and United Bank were categorized as well-capitalized. To be categorized as well-capitalized, United must maintain minimum total risk-based, Tier I risk-based, Common Tier I risk-based, and Tier I leverage ratios as set forth in the following table. There are no conditions or events since that notification that management believes would impact United’s well-capitalized status. United’s and United Bank’s capital amounts (in thousands of dollars) and ratios are presented in the following table. (Dollars in thousands) Actual For Capital Adequacy Purposes To Be Well- Capitalized  Amount   Ratio   Amount   Ratio   Amount   Ratio  As of December 31, 2024: Total Capital (to Risk- Weighted Assets): United Bankshares $ 3,897,755 16.5 % $ 1,887,433 ≥ 8.0 % $ 2,359,292 ≥ 10.0 % United Bank 3,620,657 15.4 % 1,877,704 ≥ 8.0 % 2,347,131 ≥ 10.0 % Tier I Capital (to Risk- Weighted Assets): United Bankshares $ 3,335,667 14.1 % $ 1,415,575 ≥ 6.0 % $ 1,887,433 ≥ 8.0 % United Bank 3,348,071 14.3 % 1,408,278 ≥ 6.0 % 1,877,704 ≥ 8.0 % Common Tier I Capital (to Risk Weighted Assets): United Bankshares $ 3,335,667 14.1 % $ 1,061,681 ≥ 4.5 % $ 1,533,540 ≥ 6.5 % United Bank 3,348,071 14.3 % 1,056,209 ≥ 4.5 % 1,525,635 ≥ 6.5 % Tier I Capital (to Average Assets): United Bankshares $ 3,335,667 11.7 % $ 1,136,661 ≥ 4.0 % $ 1,420,827 ≥ 5.0 % United Bank 3,348,071 11.8 % 1,132,023 ≥ 4.0 % 1,415,029 ≥ 5.0 % As of December 31, 2023: Total Capital (to Risk- Weighted Assets): United Bankshares $ 3,700,453 15.4 % $ 1,924,541 ≥ 8.0 % $ 2,405,676 ≥ 10.0 % United Bank 3,440,096 14.4 % 1,916,834 ≥ 8.0 % 2,396,043 ≥ 10.0 % Tier I Capital (to Risk- Weighted Assets): United Bankshares $ 3,162,118 13.1 % $ 1,443,405 ≥ 6.0 % $ 1,924,541 ≥ 8.0 % United Bank 3,190,950 13.3 % 1,437,626 ≥ 6.0 % 1,916,834 ≥ 8.0 % (Dollars in thousands) Actual For Capital Adequacy Purposes To Be Well- Capitalized  Amount   Ratio   Amount   Ratio   Amount   Ratio  Common Tier I Capital (to Risk Weighted Assets): United Bankshares $ 3,162,118 13.1 % $ 1,082,554 ≥ 4.5 % $ 1,563,689 ≥ 6.5 % United Bank 3,190,950 13.3 % 1,078,219 ≥ 4.5 % 1,557,428 ≥ 6.5 % Tier I Capital (to Average Assets): United Bankshares $ 3,162,118 11.4 % $ 1,110,296 ≥ 4.0 % $ 1,387,870 ≥ 5.0 % United Bank 3,190,950 11.5 % 1,108,321 ≥ 4.0 % 1,385,401 ≥ 5.0 %

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE W--FAIR In accordance with ASC Topic 820, the following describes the valuation techniques used by United to measure certain financial assets and liabilities recorded at fair value on a recurring basis in the financial statements. Securities available for sale and equity securities Loans held for sale Derivatives For a fair value hedge, the fair value of the interest rate swap is recognized on the balance sheet as either a freestanding asset or liability with a corresponding adjustment to the hedged financial instrument. Subsequent adjustments due to changes in the fair value of a derivative that qualifies as a fair value hedge are offset in current period earnings either in interest income or interest expense depending on the nature of the hedged financial instrument. For a cash flow hedge, the fair value of the interest rate swap is recognized on the balance sheet as either a freestanding asset or liability with a corresponding adjustment to accumulated other comprehensive income within shareholders’ equity, net of tax. Subsequent adjustments due to changes in the fair value of a derivative that qualifies as a cash flow hedge are offset to accumulated other comprehensive income, net of tax and reclassified into earnings in the same line associated with the forecasted transaction when the forecasted transaction affects earnings. The Company records its interest rate lock commitments and forward loan sales commitments at fair value determined as the amount that would be required to settle each of these derivative financial instruments at the balance sheet date. In the normal course of business, United enters into contractual interest rate lock commitments to extend credit to borrowers with fixed expiration dates. The commitments become effective when the borrowers “lock-in” by a range of % to % with a weighted average increase of %. For derivatives that are not designated in a hedge relationship, changes in the fair value of these derivatives are recognized in income from mortgage banking activities in the same period as the change in the fair value. Unrealized gains and losses due to changes in the fair value of other derivative financial instruments not in hedge relationship, if any, are included in noninterest income and noninterest expense, respectively. The following table presents the balances of financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2024 and 2023, segregated by the level of the valuation inputs within the fair value hierarchy: Fair Value at December 31, 2024 Using (In thousands) Description Balance as of December 31, 2024 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Available for sale debt securities: U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 245,842 $ 0 $ 245,842 $ 0 State and political subdivisions 495,073 0 495,073 0 Residential mortgage-backed securities Agency 1,059,719 0 1,059,719 0 Non-agency 82,123 0 82,123 0 Commercial mortgage-backed securities Agency 329,986 0 329,986 0 Asset-backed securities 474,982 0 474,982 0 Single issue trust preferred securities 11,919 0 11,919 0 Fair Value at December 31, 2024 Using (In thousands) Description Balance as of December 31, 2024 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Other corporate securities 260,075 4,965 255,110 0 Total available for sale securities 2,959,719 4,965 2,954,754 0 Equity securities: Financial services industry 12.504 12,504 0 0 Equity mutual funds (1) 3,394 3,394 0 0 Fixed income mutual funds 5,160 5,160 0 0 Total equity securities 21,058 21,058 0 0 Loans held for sale 44,360 0 0 44,360 Derivative financial assets: Interest rate swap contracts 644 0 644 0 TBA mortgage-backed securities 278 0 0 278 Interest rate lock commitments 339 0 0 339 Total derivative financial assets 1,261 0 644 617 Liabilities Derivative financial liabilities: Forward sales commitments 20 0 0 20 Total derivative financial liabilities 20 0 0 20 Fair Value at December 31, 2023 Using (In thousands) Description Balance as of December 31, 2023 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Available for sale debt securities: U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 484,950 $ 0 $ 484,950 $ 0 State and political subdivisions 533,831 0 533,831 0 Residential mortgage-backed securities Agency 1,049,941 0 1,049,941 0 Non-agency 90,611 0 90,611 0 Commercial mortgage-backed securities Agency 459,298 0 459,298 0 Asset-backed securities 860,638 0 860,638 0 Single issue trust preferred securities 15,141 0 15,141 0 Other corporate securities 291,967 5,159 286,808 0 Total available for sale securities 3,786,377 5,159 3,781,218 0 Equity securities: Financial services industry 211 211 0 0 Equity mutual funds (1) 3,524 3,524 0 0 Fixed income mutual funds 5,210 5,210 0 0 Total equity securities 8,945 8,945 0 0 Loans held for sale 56,261 0 4,283 51,978 Derivative financial assets: Interest rate swap contracts 611 0 611 0 Forward sales commitments 93 0 60 33 Interest rate lock commitments 1,144 0 139 1,005 Total derivative financial assets 1,848 0 810 1,038 Liabilities Derivative financial liabilities TBA mortgage-backed securities 678 0 11 667 Total derivative financial liabilities 678 0 11 667 (1) The equity mutual funds are within a rabbi trust for the payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries. There were no transfers between Level 1, Level 2 and Level 3 for financial assets and liabilities measured at fair value on a recurring basis during the year ended December 31, 2024 and 2023. The following tables present additional information about financial assets and liabilities measured at fair value at December 31, 2024 and 2023 on a recurring basis and for which United has utilized Level 3 inputs to determine fair value. The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses related to assets still held at the reporting date are recorded in Income from mortgage banking activities in the Consolidated Statements of Income. Derivative Assets Derivative Liabilities December31, 2024 Loans Held for TBA Forward Sales Interest Rate TBA Forward Balance, beginning of period  $ 51,978  $ 0  $ 33  $ 1,005  $ 667  $ 0 Originations 607,383 0 0 0 0 0 Sales (630,244 ) 0 0 0 0 0 Transfers other 0 278 (33 ) (666 ) (667 ) 20 Total gains during the period recognized in earnings 15,243 0 0 0 0 0 Balance, end of period  $ 44,360 $ 278  $ 0  $ 339  $ 0  $ 20 The amount of total (losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date  $ (1,133 )  $ 278 0  $ 339  $ 0  $20 Derivative Assets Derivative Liabilities December 31, 2023 Loans Held for Sale TBA Forward Sales Interest Rate TBA Interest Rate Balance, beginning of period  $ 44,871  $ 26  $ 6  $ 844  $ 213  $ 348 Originations 1,156,616 0 0 0 0 0 Sales (1,179,612 ) 0 0 0 0 0 Transfers other 0 (26 ) 27 161 454 (348 ) Total gains during the period recognized in earnings 30,103 0 0 0 0 0 Balance, end of period  $ 51,978  $ 0  $ 33  $ 1,005  $ 667  $ 0 The amount of total gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date  $ 1,142  $ 0  $ 33  $ 1,005  $ 667  $ 0 Fair Value Option The following table reflects the change in fair value included in earnings of financial instruments for which the fair value option has been elected: (In thousands) Description Year Ended December 31, 2024 Year Ended December 31, 2023 Income from mortgage banking activities $ (1,222) $ 1,175 The following table reflects the difference between the aggregate fair value and the remaining contractual principal outstanding for financial instruments for which the fair value option has been elected: December 31, 2024 December 31, 2023 (In thousands) Description Unpaid Fair Value Fair Value Unpaid Fair Value Fair Value Loans held for sale  $  43,698  $  44,360  $  662  $  54,377  $  56,261  $  1,884 No loans held for sale were past due or on nonaccrual status as of December 31, 2024 and 2023. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Certain financial assets are measured at fair value on a nonrecurring basis in accordance with GAAP. Adjustments to the fair value of these assets usually result from the application of lower-of-cost-or-market accounting or write-downs of individual assets. The following describes the valuation techniques used by United to measure certain financial assets recorded at fair value on a nonrecurring basis in the financial statements. Individually assessed loans OREO determined based upon the appraisal using a market approach. An authorized independent appraiser conducts appraisals for United. Appraisals for property other than ongoing construction are based on consideration of comparable property sales (“Level 2”). In contrast, valuation of ongoing construction assets requires some degree of professional judgment. In conducting an appraisal for ongoing construction property, the appraiser develops two appraised amounts: an “as is” appraised value and a “completed” value. Based on professional judgment and their knowledge of the particular situation, management determines the appropriate fair value to be utilized for such property (“Level 3”). As a matter of policy, valuations are reviewed at least annually and appraisals are generally updated on a bi-annual Intangible Assets : For United, intangible assets consist of goodwill and core deposit intangibles. Goodwill is tested for impairment at least annually or sooner if indicators of impairment exist. United may elect to perform a qualitative analysis to determine whether or not it is more-likely-than not that the fair value of a reporting unit is less than its carrying amount. If United elects to bypass this qualitative analysis, or concludes via qualitative analysis that it is more-likely-than-not that the fair value of a reporting unit is less than its carrying value, United may use either a market or income quantitative approach to determine the fair value of the reporting unit. If the fair value of the reporting unit is less than its carrying value, an impairment charge would be recorded for the difference, not to exceed the amount of goodwill allocated to the reporting unit. At each reporting date, the Company considers potential indicators of impairment. United performed its annual goodwill impairment test on the Company’s reporting units as of September 30, 2024. The goodwill impairment test did not identify any goodwill impairment. In subsequent periods, economic uncertainty, market volatility and the performance of the Company’s stock as well as possible other impairment indicators could cause us to perform a goodwill impairment test which could result in an impairment charge being recorded for that period if the carrying value of goodwill was found to exceed fair value. Core deposit intangibles relate to the estimated value of the deposit base of acquired institutions. Management reviews core deposit intangible assets on an annual basis, or sooner if indicators of impairment exist, and evaluates changes in facts and circumstances that may indicate impairment in the carrying value. During the fourth quarter of 2023, United’s management formulated a plan to consolidate its mortgage delivery channels by consolidating George Mason’s and Crescent’s mortgage banking business into United Bank. As a result of this consolidation decision, United impaired the trade names intangibles at George Mason and Crescent to zero at December 31, 2023. other fair value measurement of intangible assets was made during the year of 2024 and 2023. Mortgage Servicing Rights (“MSRs”): The following table summarizes United’s financial assets that were measured at fair value on a nonrecurring basis during the period: (In thousands) Description Fair Value at December 31, 2024 Balance as of December 31,  Quoted Prices  in Active Markets for Identical Assets (Level 1) Significant Other  Observable  Inputs (Level 2) Significant  Unobservable  Inputs (Level 3) YTD Assets Individually assessed loans $ 40,701 $ 0 $ 21,725 $ 18,976 $ (231 ) OREO 327 0 240 87 0 (In thousands) Description Fair Value at December 31, 2023 Balance as of December 31,  Quoted Prices  in Active Markets for Identical Assets (Level 1) Significant Other  Observable  Inputs (Level 2) Significant  Unobservable  Inputs (Level 3) YTD  (Losses)  Assets Individually assessed loans $ 45,308 $ 0 $ 44,722 $ 586 $ 314 OREO 2,615 0 2,615 0 (67 ) Fair Value of Other Financial Instruments The following methods and assumptions were used by United in estimating its fair value disclosures for other financial instruments: Cash and Cash Equivalents: Securities held to maturity and other securities Loans and leases Deposits Short-term Borrowings: Long-term Borrowings: Summary of Fair Values for All Financial Instruments The estimated fair values of United’s financial instruments are summarized below: Fair Value at Measurement (In thousands)  Carrying    Fair Value    Quoted Prices  in Active Markets for Identical Assets (Level 1) Significant Other  Observable  Inputs (Level 2) Significant  Unobservable  Inputs (Level 3) December 31, 2024 Cash and cash equivalents $ 2,292,244 $ 2,292,244 $ 0 $ 2,292,244 $ 0 Securities available for sale 2,959,719 2,959,719 4,965 2,954,754 0 Securities held to maturity 1,002 1,020 0 0 1,020 Equity securities 21,058 21,058 21,058 0 0 Other securities 277,517 263,641 0 0 263,641 Loans held for sale 44,360 44,360 0 0 44,360 Net loans 21,401,649 20,868,239 0 0 20,868,239 Derivative financial assets, 1,261 1,261 0 644 617 Mortgage servicing rights 0 0 0 0 0 Deposits 23,961,859 23,922,063 0 23,922,063 0 Short-term borrowings 176,090 176,090 0 176,090 0 Long-term borrowings 540,420 505,305 0 505,305 0 Derivative financial liabilities 20 20 0 0 20 December 31, 2023 Cash and cash equivalents $ 1,598,943 $ 1,598,943 $ 0 $ 1,598,943 $ 0 Securities available for sale 3,786,377 3,786,377 5,159 3,781,218 0 Securities held to maturity 1,003 1,020 0 0 1,020 Equity securities 8,945 8,945 8,945 0 0 Other securities 329,429 312,958 0 0 312,958 Loans held for sale 56,261 56,261 0 4,283 51,978 Net loans 21,099,847 20,463,710 0 0 20,463,710 Derivative financial assets, 1,848 1,848 0 810 1,038 Mortgage servicing rights 4,554 13,427 0 0 13,427 Deposits 22,819,319 22,760,310 0 22,760,310 0 Short-term borrowings 196,095 196,095 0 196,095 0 Long-term borrowings 1,789,103 1,769,123 0 1,769,123 0 Derivative financial liabilities 678 678 0 11 667

Variable Interest Entities

Variable Interest Entities	12 Months Ended
	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	NOTE X--VARIABLE Variable interest entities (“VIEs”) are entities that either have a total equity investment that is insufficient to permit the entity to finance its activities without additional subordinated financial support or whose equity investors lack the characteristics of a controlling financial interest (i.e., ability to make significant decisions, through voting rights, right to receive the expected residual returns of the entity, and obligation to absorb the expected losses of the entity). VIEs can be structured as corporations, trusts, partnerships, or other legal entities. United’s business practices include relationships with certain VIEs. For United, the business purpose of these relationships primarily consists of funding activities in the form of issuing trust preferred securities. United currently sponsors twenty statutory business trusts that were created for the purpose of raising funds that originally qualified for Tier I regulatory capital. As previously discussed, these trusts now are considered Tier II regulatory capital. These trusts, of which several were acquired through bank acquisitions, issued or participated in pools of trust preferred capital securities to third-party investors with the proceeds invested in junior subordinated debt securities of United. The Company, through a small capital contribution, owns 100% of the voting equity shares of each trust. The assets, liabilities, operations, and cash flows of each trust are solely related to the issuance, administration, and repayment of the preferred equity securities held by third-party investors. United fully and unconditionally guarantees the obligations of each trust and is obligated to redeem the junior subordinated debentures upon maturity. As defined in applicable accounting standards, VIEs are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when an enterprise has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The enterprise with a controlling financial interest, known as the primary beneficiary, consolidates the VIE. United’s wholly owned and indirect wholly owned statutory trust subsidiaries are VIEs for which United is not the primary beneficiary. Accordingly, its accounts are not included in United’s consolidated financial statements. At December 31, 2024 and 2023, United’s investment (maximum exposure to loss) in these trusts were $12,238,000 and $11,751,000, respectively. United, through its banking subsidiary, also makes limited partner equity investments in various low income housing and community development partnerships sponsored by independent third-parties. United invests in these partnerships to either realize tax credits on its consolidated federal income tax return or for purposes of earning a return on its investment. These partnerships are considered VIEs as the limited partners lack a controlling financial interest in the entities through their inability to make decisions that have a significant effect on the operations and success of the partnerships. These partnerships are not consolidated as United is not deemed to be the primary beneficiary. At December 31, 2024 and 2023, United’s investment (maximum exposure to loss) in these low income housing and community development partnerships were $98,441,000 and $87,554,000, respectively, while related unfunded commitments were $89,292,000 and $63,539,000, respectively. As of December 31, 2024, United expects to recover its remaining investments through the use of the tax credits that are generated by the investments.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Segment Information	NOTE Y--SEGMENT United operates in one reportable segment, community banking. Through its community banking segment, United offers a full range of products and services through various delivery channels. Included among the banking products and services offered are the acceptance of deposits in checking, savings, time and money market accounts; the making and servicing of personal, credit card, commercial, and floor plan loans; and the making of construction and real estate loans as well as the origination and sale of residential mortgages in the secondary market. Also offered are trust and brokerage services, safe deposit boxes, and wire transfers. The community banking segment derives revenues mainly from interest income on loans to customers, investment securities held and other short-term investments in addition to fees and income derived related to the services listed above. The accounting policies of the community banking segment are the same as those described in the summary of significant accounting policies. United’s chief operating decision maker (“CODM”) is its chief executive officer who maintains responsibility for the day-to-day . The CODM uses net income to evaluate income generated from segment assets (return on assets) in deciding whether to reinvest profits into the community banking segment or into other parts of the entity, such as for acquisitions or to pay dividends. Net income is used to monitor budget versus actual results as well as comparing to prior year’s results. The comparative analysis along with the monitoring of budgeted versus actual results are used in assessing performance of the segment. Information about the community banking segment for the years ended December 31, 2024, 2023 and 2022 is as follows: For the Year Ended December 31 (In thousands) 2024 2023 2022 Total Assets $ 30,023,545 $ 29,926,482 $ 29,489,380 Net interest income $ 911,068 $ 919,924 $ 896,431 Provision for credit losses 25,153 31,153 18,822 Other income 123,695 135,258 153,261 Other expense Employee compensation 234,618 230,809 242,408 Employee benefits 53,621 48,368 45,944 Net occupancy expense 46,084 46,426 45,129 OREO expense 576 1,355 2,138 Net (gains) losses on the sales of OREO properties (75 ) (60 ) 700 Equipment expense 29,686 29,731 29,320 Data processing expense 29,646 29,395 29,997 Mortgage loan servicing expense and impairment 2,694 5,596 7,099 Bankcard processing expense 2,490 2,192 1,938 FDIC insurance expense 19,735 30,376 11,988 Other segment expense (a) 125,956 136,036 138,426 Total other expense 545,031 560,224 555,087 Income before income taxes 464,579 463,805 475,783 Income taxes 91,583 97,492 96,156 Segment net income 372,996 366,313 379,627 Reconciliation of profit or loss Adjustments and reconciling items 0 0 0 Consolidated net income $ 372,996 $ 366,313 $ 379,627 (a) Other segment expense includes legal, consulting and other professional services expense, franchise and other taxes not on income, expense for reserve on lending-related commitments, ATM expenses, marketing expense, core deposits amortization, and other general operating expenses.

Quarterly Financial Data

Quarterly Financial Data	12 Months Ended
	Dec. 31, 2024
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data	NOTE Z--QUARTERLY Quarterly financial data for 2024 and 2023 is summarized below: (Dollars in thousands, except per share data) 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter 2024 Interest income $ 369,180 $ 374,184 $ 382,723 $ 376,034 Interest expense 146,691 148,469 152,467 143,426 Net interest income 222,489 225,715 230,256 232,608 Provision for credit losses 5,740 5,779 6,943 6,691 Mortgage banking income 5,298 3,901 4,544 2,314 Securities (losses) gains, net (99 ) (218 ) (6,715 ) (688 ) Other noninterest income 27,013 26,540 34,113 27,692 Noninterest expense 140,742 134,774 135,339 134,176 Income taxes 21,405 18,878 24,649 26,651 Net income (1) 86,814 96,507 95,267 94,408 Per share data: Average shares outstanding (000s): Basic 134,809 135,138 135,158 135,236 Diluted 135,121 135,315 135,505 135,732 Net income per share: Basic $ 0.64 $ 0.71 $ 0.70 $ 0.70 Diluted $ 0.64 $ 0.71 $ 0.70 $ 0.69 Dividends per share $ 0.37 $ 0.37 $ 0.37 $ 0.37 2023 Interest income $ 329,303 $ 345,932 $ 356,910 $ 369,175 Interest expense 94,983 118,471 128,457 139,485 Net interest income 234,320 227,461 228,453 229,690 Provision for credit losses 6,890 11,440 5,948 6,875 Mortgage banking income 6,384 7,907 7,556 4,746 Securities (losses) gains, net (405 ) (7,336 ) (181 ) 276 Other noninterest income 26,765 34,607 26,286 28,653 Noninterest expense 137,419 135,288 135,230 152,287 Income taxes 24,448 23,452 24,779 24,813 Net income (1) 98,307 92,459 96,157 79,390 Per share data: Average shares outstanding (000s): Basic 134,411 134,683 134,685 134,691 Diluted 134,840 134,850 134,888 134,985 Net income per share: Basic $ 0.73 $ 0.68 $ 0.71 $ 0.59 Diluted $ 0.73 $ 0.68 $ 0.71 $ 0.59 Dividends per share $ 0.36 $ 0.36 $ 0.36 $ 0.37 (1) For further information, see the related discussion “Quarterly Results” included in Management’s Discussion and Analysis.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Nature of Operations	Nature of Operations: its business.
Operating and Reporting Segments	Operating and Reporting Segments As of December 31, 2024, United’s business activities are confined to one operating segment, United Bank, and one reportable segment, community banking. As a community banking entity, United, through United Bank, offers a full range of products and services through various delivery channels. Included among the banking products and services offered are the acceptance of deposits in checking, savings, time and money market accounts; the making and servicing of personal, credit card, commercial, and floor plan loans; and the making of construction and real estate loans as well as the origination and sale of residential mortgages in the secondary market. Also offered are trust and brokerage services, safe deposit boxes, and wire transfers. United’s chief operating decision maker regularly reviews the operating results of United Bank in order to assess performance and make decisions about resource allocation. At December 31, 2023, United had three operating segments: United Bank, George Mason Mortgage, LLC (“George Mason”) and Crescent Mortgage Company (“Crescent”), and two reporting segments: community banking and mortgage banking. However, during the first quarter of 2024, United consolidated the mortgage origination and sales business of George Mason and Crescent with that of United Bank. United previously exited the third-party origination (“TPO”) business during the fourth quarter of 2023.
Basis of Presentation	Basis of Presentation: As defined in applicable accounting standards, variable interest entities (“VIEs”) are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when an enterprise has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The enterprise with a controlling financial interest, known as the primary beneficiary, consolidates the VIE. United’s wholly owned and indirect wholly owned statutory trust subsidiaries are VIEs for which United is not the primary beneficiary. Accordingly, its accounts are not included in United’s consolidated financial statements. The accounting and reporting policies of United conform with U.S. generally accepted accounting principles. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. To conform to the 2024 presentation, certain reclassifications have been made to prior period amounts, which had no impact on net income, comprehensive income or shareholders’ equity. In the opinion of management, all adjustments necessary for a fair presentation of financial position and results of operations have been made. Such adjustments are of a normal and recurring nature. In the opinion of management, all adjustments necessary for a fair presentation of financial position and results of operations have been made. The Company has evaluated events and transactions subsequent to December 31, 2024 through the date these financial statements were issued. Based on definitions and requirements of generally accepted accounting principles for “Subsequent Events,” the Company has not identified any events that would require adjustments to, or disclosure in the financial statements other than information related to the acquisition of Piedmont Bancorp, Inc. (“Piedmont”) disclosed in Note B, Notes to Consolidated Financial Statements.
Cash and Cash Equivalents	Cash and Cash Equivalents:
Debt securities	Debt securities HTM securities are accounted for at amortized cost, but the Company must have both the positive intent and the ability to hold those securities to maturity. There are very limited circumstances under which securities in the HTM category can be sold without jeopardizing the cost basis of accounting for the remainder of the securities in this category. Substantially all of the Company’s HTM debt securities are issued by state and political subdivisions (municipalities). As of December 31, 2024, United considers its HTM debt securities portfolio to be immaterial. AFS securities are accounted for at fair value. Gains and losses realized on the sale of these securities are accounted for based on the specific identification method. Unrealized gains and losses for AFS securities are excluded from earnings and reported net of the related tax effect in the accumulated other comprehensive income component of shareholders’ equity.
Allowance for Credit Losses	Allowance for Credit Losses (HTM Debt Securities) Allowance for Credit Losses (AFS Debt Securities)
Equity securities	Equity securities:
Other investment securities	Other investment securities: investments
Securities Purchased Under Resale Agreements and Securities Sold Under Agreements to Repurchase	Securities Purchased Under Resale Agreements and Securities Sold Under Agreements to Repurchase:
Loans	Loans: For all loan classes, past due loans and leases are reviewed on a monthly basis to identify loans and leases for nonaccrual status. Generally, when collection in full of the principal and interest is jeopardized, the loan is placed on nonaccrual status. The accrual of interest income on commercial and most consumer loans generally is discontinued when a loan becomes 90 to 120 days past due as to principal or interest. However, regardless of delinquency status, if a loan is fully secured and in the process of collection and resolution of collection is expected in the near term (generally less than 90 days), then the loan will not be placed on nonaccrual status. When interest accruals are discontinued, unpaid interest recognized in income in the current year is reversed, and unpaid interest accrued in prior years is charged to the allowance for credit losses. United’s method of income recognition for loans and leases that are classified as nonaccrual is to recognize interest income on a cash basis or apply the cash receipt to principal when the ultimate collectibility of principal is in doubt. Nonaccrual loans and leases will not normally be returned to accrual status unless all past due principal and interest has been paid and the borrower has evidenced their ability to meet the contractual provisions of the note.
Loans Acquired Through Transfer	Loans Acquired Through Transfer: Loans acquired in a business combination that have experienced more-than-insignificant deterioration in credit quality since origination are considered purchased credit deteriorated (“PCD”) loans. At the acquisition date, an estimate of expected credit losses is made for groups of PCD loans with similar risk characteristics and individual PCD loans without similar risk characteristics. This initial allowance for credit losses is allocated to individual PCD loans and added to the purchase price or acquisition date fair values to establish the initial amortized cost basis of the PCD loans. As the initial allowance for credit losses is added to the purchase price, there is no credit loss expense recognized upon acquisition of a PCD loan. Any difference between the unpaid principal balance of PCD loans and the amortized cost basis is considered to relate to noncredit factors and results in a discount or premium. Discounts and premiums are recognized through interest income on a level-yield method over the life of the loans. For loans and leases acquired after the adoption of ASC Topic 326, United will likely take several factors into consideration when determining if loans and leases meet the definition of PCD. ASC Topic 326 lists some, but not all, factors for consideration in the bifurcation of PCD versus non-PCD assets: · Financial assets that are delinquent as of the acquisition date · Financial assets that have been downgraded since origination · Financial assets that have been placed on nonaccrual status For acquired loans not deemed purchased credit deteriorated at acquisition, the differences between the initial fair value and the unpaid principal balance are recognized as interest income on a level-yield basis over the lives of the related loans.
Loans Held for Sale	Loans Held for Sale: Loans held for sale are recorded under the fair value option at a fair value measured using valuations from investors for loans with similar characteristics adjusted for the Company’s actual sales experience versus the investor’s indicated pricing. Gains and losses on sale of loans are recorded within income from mortgage banking activities.
Allowance for Loan and Lease Losses	Allowance for Loan and Lease Losses: United made a policy election to present the accrued interest receivable balance separately in its consolidated balance sheets from the amortized cost of a loan. United estimates the allowance balance using relevant available information, from internal and external sources, relating to past events, current conditions and reasonable and supportable forecasts. Historical credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwriting standards, portfolio mix, delinquency level or term as well as reasonable and supportable forecast adjustments for changes in environmental conditions, such as changes in unemployment rates, property values or other relevant factors. A reversion to historical loss data occurs via a straight-line method during the year following the one-year reasonable and supportable forecast period. United pools its loans and leases based on similar risk characteristics in estimating expected credit losses. United has identified the following portfolio segments and measures the allowance for credit losses using the following methods: · Method: Probability of Default/Loss Given Default (PD/LGD) Ø Commercial Real Estate Owner-Occupied Ø Commercial Real Estate Nonowner-Occupied Ø Commercial Other · Method: Cohort Ø Residential Real Estate Ø Construction & Land Development Ø Consumer Ø Bankcard Risk characteristics of commercial real estate owner-occupied loans and commercial other loans and leases are similar in that they are normally dependent upon the borrower’s internal cash flow from operations to service debt. Commercial real estate nonowner-occupied loans differ in that cash flow to service debt is normally dependent on external income from third parties for use of the real estate such as rents, leases and room rates. Residential real estate loans are dependent upon individual borrowers who are affected by changes in general economic conditions, demand for housing and resulting residential real estate valuation. Construction and land development loans are impacted mainly by demand whether for new residential housing or for retail, industrial, office and other types of commercial construction within a given area. Consumer loan pool risk characteristics are influenced by general, regional and local economic conditions. Loans that do not share risk characteristics are evaluated on an individual basis. Loans evaluated individually are not also included in the collective evaluation. When management determines that foreclosure is probable or when the borrower is experiencing financial difficulty at the reporting date and repayment is expected to be provided substantially through the operation or sale of the collateral but may also include other non-performing loans, expected credit losses are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. These individually evaluated loans are removed from their respective pools and typically represent collateral dependent loans. Expected credit losses are estimated over the contractual term of the loans and leases, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless management has a reasonable expectation at the reporting date that the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancelable by United. At the acquisition date, an initial allowance for expected credit losses for non-PCD loans is estimated and recorded as credit loss expense. The subsequent measurement of expected credit losses for all acquired loans is the same as the subsequent measurement of expected credit losses for originated loans. For allowance for credit losses under ASC Topic 326 calculation purposes, United includes its acquired loans and leases in their relevant pool unless they meet the criteria for specific review.
Bank Premises and Equipment	Bank Premises and Equipment: three five
Other Real Estate Owned	Other Real Estate Owned
Intangible Assets	Intangible Assets: one Goodwill is tested for impairment at least annually or sooner if indicators of impairment exist. United may elect to perform a qualitative analysis to determine whether or not it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount. If United elects to bypass this qualitative analysis, or concludes via qualitative analysis that it is more-likely-than-not that the fair value of a reporting unit is less than its carrying value, United may use either a market or income quantitative approach, whichever is more practical, to determine the fair value of the reporting unit to compare to its carrying value. If the estimated fair value of the reporting unit is less than its carrying value, an impairment charge would be recorded for the excess, not to exceed the amount of goodwill allocated to the reporting unit. At each reporting date, the Company considers potential indicators of impairment. United bypassed a qualitative assessment and utilized a quantitative approach to test goodwill for impairment as of September 30, 2024. The goodwill impairment test did not identify any indicators of goodwill impairment. As of December 31, 2024, and 2023, total goodwill approximated $ .
Mortgage Servicing Rights, Fees and Costs	Mortgage Servicing Rights, Fees and Costs: MSRs are amortized in proportion to, and over the period of, estimated net servicing income. The amortization of the MSRs is analyzed periodically and is adjusted to reflect changes in prepayment rates and other estimates. The Company evaluates potential impairment of MSRs based on the difference between the carrying amount and current estimated fair value of the servicing rights. In determining impairment, the Company aggregates all servicing rights and stratifies them into tranches based on predominant risk characteristics. If impairment exists, a valuation allowance is established for any excess of amortized cost over the current estimated fair value by a charge to income. If the Company later determines that all or a portion of the impairment no longer exists for a particular tranche, a reduction of the allowance may be recorded as an increase to income. Service fee income is recorded for fees earned for servicing mortgage loans under servicing agreements with the Federal National Mortgage Association (“FNMA”), the Federal Home Loan Mortgage Corporation (“FHLMC”) and certain private investors. The fees are based on a contractual percentage of the outstanding principal balance of the loans serviced and are recorded in noninterest income. Amortization of MSRs and mortgage servicing costs are charged to expense when incurred. During the third quarter of 2024, United sold its remaining balance of MSRs.
Accrued Interest Receivable	Accrued Interest Receivable • Presenting accrued interest receivable balances separately from their underlying instruments within the consolidated statements of financial condition. • Excluding accrued interest receivable that is included in the amortized cost of financing receivables from related disclosure requirements. • Continuing our policy to write off accrued interest receivable by reversing interest income in cases where the Company does not reasonably expect to receive payment. • Not measuring an allowance for credit losses for accrued interest receivable due to the Company’s policy of writing off uncollectible accrued interest receivable balances in a timely manner.
Revenue Recognition	Revenue Recognition Descriptions of our revenue-generating activities that are within the scope of ASC Topic 606, which are presented in our Consolidated Statements of Income as components of Other Income are discussed below. There are no significant judgements relating to the amount and timing of revenue recognition for those revenue streams under the scope of ASC Topic 606. Fees from Trust Services Revenue from trust services primarily is comprised of fees earned from the management and administration of trusts and other customer assets. Trust services include custody of assets, investment management, escrow services, and similar fiduciary activities. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days after month end through a direct charge to customers’ accounts. Fees from Brokerage Services Revenue from brokerage services are recorded as the income is earned at the time the related service is performed. In return for such services, the Company charges a commission for the sales of various securities products primarily consisting of investment company shares, annuity products, and corporate debt and equity securities, for its selling and administrative efforts. For account supervision, advisory and administrative services, revenue is recognized over a period of time as earned based on customer account balances and activity. Fees from Deposit Services Service charges on deposit accounts consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, check orders, ATM activity fees, debit card fees, and other deposit account related fees. Revenue is recognized when our performance obligation is completed which is generally monthly for account maintenance services or when a transaction has been completed (ATM or debit card activity). Bankcard Fees and Merchant Discounts Bankcard fees and merchant discounts are primarily comprised of credit card income and merchant services income. Credit card income is primarily comprised of interchange fees earned whenever the Company’s credit cards are processed through card payment networks such as Visa. Merchant services income mainly represents fees charged to merchants to process their credit card transactions. The Company’s performance obligation for bankcard fees and interchange are largely satisfied, and related revenue recognized at the time services are rendered. Payment is typically received immediately or in the following month.
Advertising Costs	Advertising Costs:
Income Taxes	Income Taxes: For uncertain income tax positions, United records a liability based on a recognition threshold of more-likely-than-not, and a measurement attribute for all tax positions taken on a tax return, in order for those tax positions to be recognized in the financial statements. United files a consolidated income tax return with its subsidiaries. Federal income tax expense or benefit has been allocated to subsidiaries on a separate return basis.
Derivative Financial Instruments	Derivative Financial Instruments: Derivative instruments designated in a hedge relationship to mitigate exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivative instruments designated in a hedge relationship to mitigate exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. For a fair value hedge, the fair value of the interest rate swap is recognized on the balance sheet as either a freestanding asset or liability with a corresponding adjustment to the hedged financial instrument. Subsequent adjustments due to changes in the fair value of a derivative that qualifies as a fair value hedge are offset in current period earnings either in interest income or interest expense depending on the nature of the hedged financial instrument. For a cash flow hedge, the fair value of the interest rate swap is recognized on the balance sheet as either a freestanding asset or liability with a corresponding adjustment to accumulated other comprehensive income within shareholders’ equity, net of tax. Subsequent adjustments due to changes in the fair value of a derivative that qualifies as a cash flow hedge are offset to accumulated other comprehensive income, net of tax and reclassified into earnings in the same line associated with the forecasted transaction when the forecasted transaction affects earnings. Fair value hedges may be eligible for offset on the consolidated balance sheets because they are subject to master netting arrangements or similar agreements. United has elected not to offset the assets and liabilities subject to such arrangements on the consolidated financial statements. At inception of a hedge relationship, United formally documents the hedged item, the particular risk management objective, the nature of the risk being hedged, the derivative being used, how effectiveness of the hedge will be assessed and how the ineffectiveness of the hedge will be measured. United also assesses hedge effectiveness at inception and on an ongoing basis using regression analysis. Hedge ineffectiveness is measured by using the change in fair value method. The change in fair value method compares the change in the fair value of the hedging derivative to the change in the fair value of the hedged exposure, attributable to changes in the benchmark rate. United enters into interest rate lock commitments to finance residential mortgage loans with its customers. These commitments, which contain fixed expiration dates, offer the borrower an interest rate guarantee provided the loan meets underwriting guidelines and closes within the timeframe established by United. Interest rate risk arises on these commitments and subsequently closed loans if interest rates change between the time of the interest rate lock and the delivery of the loan to the investor. Market risk on interest rate lock commitments and mortgage loans held for sale is managed using corresponding forward mortgage loan sales contracts. United is a party to these forward mortgage loan sales contracts to sell loans with servicing released and short sales of mortgage-backed securities. When the interest rate is locked with the borrower, the rate lock commitment, forward sale agreement, and mortgage-backed security position are undesignated derivatives and marked to fair value through earnings. The fair value of the rate lock derivative is measured using valuations from investors for loans with similar characteristics as well as considering the probability of the loan closing (i.e. the “pull-through” rate) with some adjusted for the Company’s actual sales experience versus the investor’s indicated pricing. Fair values of TBA mortgage-backed securities are measured using valuations from investors for mortgage-backed securities with similar characteristics. Income from mortgage banking activities includes the gain recognized for the period presented and associated elements of fair value. United is subject to the Dodd-Frank Act clearing requirement for eligible derivatives. United has executed and cleared eligible derivatives through the London Clearing House (“LCH”). Variation margin at the LCH is distinguished as settled-to-market and settled daily based on the prior day value, rather than collateralized-to-market. The daily settlement of the derivative exposure does not change or reset the contractual terms of the instrument. For derivatives that are not designated in a hedge relationship, changes in the fair value of the derivatives are recognized in earnings in the same period as the change in the fair value. Cash flows from derivative financial instruments are classified as cash flows from operating activities on the consolidated statements of cash flows.
Off-balance-sheet credit exposures	Off-balance-sheet credit exposures :
Stock-Based Compensation	Stock-Based Compensation Stock-based compensation expense was $12,130,000 in 2024, $12,463,000 in 2023, and $9,881,000 in 2022.
Treasury Stock	Treasury Stock
Trust Assets and Income	Trust Assets and Income:
Earnings Per Common Share	Earnings Per Common Share: Under the two-class method, basic earnings per common share is computed by dividing net earnings allocated to common stock by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method. Antidilutive stock options and restricted stock outstanding of 590,395, 1,410,389, and 656,432 for the years ended December 31, 2024, 2023 and 2022, respectively, were excluded from the earnings per diluted common share calculation. The reconciliation of the numerator and denominator of basic earnings per share with that of diluted earnings per share is presented as follows: Year Ended December 31 (Dollars in thousands, except per share) 2024 2023 2022 Distributed earnings allocated to common   $ 200,156   $ 195,167   $ 194,052 Undistributed earnings allocated to common 172,006 170,267 184,572 Net earnings allocated to common   $ 372,162   $ 365,434   $ 378,624 Average common shares outstanding 134,947,592 134,505,058 134,776,241 Dilutive effect of stock compensation 277,825 248,762 341,271 Average diluted shares outstanding 135,225,417 134,753,820 135,117,512 Earnings per basic common share   $ 2.76   $ 2.72   $ 2.81 Earnings per diluted common share   $ 2.75   $ 2.71   $ 2.80
Fair Value Measurements	Fair Value Measurements ASC Topic 820 specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect United’s market assumptions. The three levels of the fair value hierarchy based on these two types of inputs are as follows: Level 1 -  Valuation is based on quoted prices in active markets for identical assets and liabilities. Level 2 -  Valuation is based on observable inputs including quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets and liabilities in less active markets, and model-based valuation techniques for which significant assumptions can be derived primarily from or corroborated by observable data in the market. Level 3 -  Valuation is based on model-based techniques that use one or more significant inputs or assumptions that are unobservable in the market. When determining the fair value measurements for assets and liabilities, United looks to active and observable markets to price identical assets or liabilities whenever possible and classifies such items in Level 1. When identical assets and liabilities are not traded in active markets, United looks to market observable data for similar assets and liabilities and classifies such items as Level 2. Nevertheless, certain assets and liabilities are not actively traded in observable markets and United must use alternative valuation techniques using unobservable inputs to determine a fair value and classifies such items as Level 3. For assets and liabilities that are not actively traded, the fair value measurement is based primarily upon estimates that require significant judgment. Therefore, the results may not be realized in an actual sale or immediate settlement of the asset or liability. Additionally, there are inherent weaknesses in any calculation technique, and changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect the results of current or future values. The level within the fair value hierarchy is based on the lowest level of input that is significant in the fair value measurement.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In November 2024, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2024-04, 2024-04 2024-04 2024-04 2024-04 ASU 2024-04 In November 2024, the FASB issued Accounting Standards Update ASU 2024-03, “Disaggregation of Income Statement Expenses.” ASU 2024-03 requires disaggregated disclosure of income statement expenses for public business entities. ASU 2024-03 adds ASC 220-40 to require a footnote disclosure about specific expenses by requiring public business entities to disaggregate, in a tabular presentation, each relevant expense caption on the face of the income statement that includes any of the following natural expenses: purchases of inventory, employee compensation, depreciation, intangible asset amortization, and depreciation, depletion, and amortization recognized as part of oil- and gas-producing activities or other types of depletion expenses. Certain other expenses and gains or losses that must be disclosed under existing U.S. GAAP, and that are recorded in a relevant expense caption, must be presented in the same tabular disclosure. ASU 2024-03 does not change or remove existing expense disclosure requirements; however, it may affect where that information appears in the footnote to the financial statements. ASU 2024-03 is effective for public business entities for annual periods beginning after December 15, 2026. Entities are permitted to early adopt the standard and apply retrospectively for annual financial statements that have not yet been issued or made available for issuance. The adoption of ASU 2024-03 is not expected to have an impact on the Company’s financial condition or results of operations but could change certain disclosures in United’s SEC filings. In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, 2023-09 2023-09 effectiveness of income tax disclosures. ASU 2023-09 ASU 2023-09 In November 2023, the FASB issued ASU 2023-07, 2023-07 No. 2023-07 ASU 2023-07 10-K. In October 2023, the FASB issued ASU 2023-06, S-X S-K ASU 2023-06 In August 2023, the FASB issued ASU 2023-05, “Business Combinations – Joint Venture Formations (Subtopic 805-60).” ASU 2023-05 requires a joint venture to apply a new basis of accounting at its formation date by valuing the net assets contributed at fair value for both business and asset transactions. The value of the net assets in total is then allocated to individual assets and liabilities by applying Topic 805 with certain exceptions. ASU 2023-05 requires certain disclosures to aid the user of the financial statements in understanding the implications of the joint venture formation. ASU 2023-05 is effective for joint venture formations with a formation date on or after January 1, 2025. The adoption of ASU 2023-05 is not expected to have an impact on the Company’s financial condition or results of operations. In July 2023, the FASB issued ASU No. 2023-03, “Presentation of Financial Statements (Topic 205), Income Statement—Reporting Comprehensive Income (Topic 220), Distinguishing Liabilities from Equity (Topic 480), Equity (Topic 505), and Compensation—Stock Compensation (Topic 718): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 120, SEC Staff Announcement at the March 24, 2022 EITF Meeting, and Staff Accounting Bulletin Topic 6.B, Accounting Series Release 280—General Revision of Regulation S-X: Income or Loss Applicable to Common Stock.” ASU 2023-03 amends the ASC for SEC updates pursuant to SEC Staff Accounting Bulletin No. 120; SEC Staff Announcement at the March 24, 2022 Emerging Issues Task Force (“EITF”) Meeting; and Staff Accounting Bulletin Topic 6.B, Accounting Series Release 280—General Revision of Regulation S-X: Income or Loss Applicable to Common Stock. These updates were immediately effective and did not have a significant impact on the Company’s financial statements. In March 2023, the FASB issued Accounting ASU 2023-02, “Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method.” ASU 2023-02 permits reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. The amendments in this ASU apply to all reporting entities that hold tax equity investments that meet the conditions for and elect to account for them using the proportional amortization method or an investment in a low income housing tax credit (“LIHTC”) structure through a limited liability entity that is not accounted for using the proportional amortization method and to which certain LIHTC-specific guidance removed from Subtopic 323-740 has been applied. Additionally, the disclosure requirements apply to investments that generate income tax credits and other income tax benefits from a tax credit program for which the entity has elected to apply the proportional amortization method (including investments within that elected program that do not meet the conditions to apply the proportional amortization method). ASU 2023-02 In December 2022, the FASB issued ASU 2022-06, “Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848.” ASU 2022-06 extends the period of time financial statement preparers can utilize the reference rate reform relief guidance. In 2020, the FASB issued ASU 2020-04 to provide temporary, optional expedients related to the accounting for contract modifications and hedging transactions as a result of the global markets’ anticipated transition away from the use of LIBOR and other interbank offered rates to alternative reference rates. At the time ASU 2020-04 was issued, the United Kingdom’s Financial Conduct Authority (“FCA”) had established the intent that it would no longer be necessary to persuade, or compel, banks to submit to LIBOR after December 31, 2021. As a result, the sunset provision was set for December 31, 2022; 12 months after the expected cessation date of all currencies and tenors of LIBOR. In March 2021, the FCA announced that the intended cessation date of LIBOR in the United States would be June 30, 2023, which has now taken effect as intended. Accordingly, ASU 2022-06 defers the expiration date of ASU 848 to December 31, 2024. United implemented a comprehensive project plan to execute the transition of its LIBOR-based financial instruments to alternative reference rates. United utilized the Secured Overnight Financing Rate (“SOFR”) and Prime as the preferred alternatives to LIBOR. In June 2022, the FASB issued ASU 2022 - In March 2022, the FASB issued ASU No. 2022-02, “Troubled Debt Restructurings and Vintage Disclosures”. ASU 2022-02 updates the requirements for accounting for credit losses under ASC 326, eliminates the accounting guidance on troubled debt restructurings for creditors in ASC 310-40, and enhances creditors’ disclosure requirements related to loan refinancings and restructurings for borrowers experiencing financial difficulty. ASU 2022-02 also amends the guidance on “vintage disclosures” to require disclosure of gross write-offs by year of origination. ASU No. 2022-02 was effective for public business entities that have adopted Topic 326 for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Early adoption of the amendment was permitted. ASU No. 2022-02 was adopted by United prospectively for the period beginning January 1, 2023. The adoption did not have a material impact on the Company’s financial condition or results of operations. However, ASU No. 2022-02 did affect the Company’s disclosures. For additional information, see notes to Consolidated Financial Statements, Note E, “Credit Quality,” in this Form 10-K. In March 2022, the FASB issued ASU No. 2022-01, 2022-01 last-of-layer No. 2017-12. last-of-layer 2022-01 No. 2022-01 2017-12 No. 2022-01 In October 2021, the FASB issued ASU No. 2021-08, 2021-08 will generally recognize and measure acquired contract assets and contract liabilities in a manner consistent with how the acquiree recognized and measured them in its preacquisition financial statements. ASU No. 2021-08 for fiscal years beginning after December , , including interim periods within those fiscal years. The amendments should be applied prospectively to business combinations occurring on or after the effective date of the amendments. Early adoption of the amendments is permitted. ASU . was adopted by the Company on January , . The adoption did not have a material impact on the Company’s financial condition or results of operations.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Reconciliation of Numerator and Denominator of Basic Earnings Per Share with that of Diluted Earnings Per Share	The reconciliation of the numerator and denominator of basic earnings per share with that of diluted earnings per share is presented as follows: Year Ended December 31 (Dollars in thousands, except per share) 2024 2023 2022 Distributed earnings allocated to common   $ 200,156   $ 195,167   $ 194,052 Undistributed earnings allocated to common 172,006 170,267 184,572 Net earnings allocated to common   $ 372,162   $ 365,434   $ 378,624 Average common shares outstanding 134,947,592 134,505,058 134,776,241 Dilutive effect of stock compensation 277,825 248,762 341,271 Average diluted shares outstanding 135,225,417 134,753,820 135,117,512 Earnings per basic common share   $ 2.76   $ 2.72   $ 2.81 Earnings per diluted common share   $ 2.75   $ 2.71   $ 2.80

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2024
Summary of Amortized Cost and Estimated Fair Values of Available for Sale Securities	Securities held for indefinite periods of time are classified as available for sale and carried at estimated fair value. The amortized cost and estimated fair values of securities available for sale are summarized as follows. December 31, 2024 Gross Gross Allowance Estimated (Dollars in thousands) Amortized Unrealized Unrealized For Credit Fair Cost Gains Losses Losses Value U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 248,867 $ 59 $ 3,084 $ 0 $ 245,842 State and political subdivisions 574,580 8 79,515 0 495,073 Residential mortgage-backed securities Agency 1,226,400 433 167,114 0 1,059,719 Non-agency 88,392 262 6,531 0 82,123 Commercial mortgage-backed securities Agency 372,646 38 42,698 0 329,986 Asset-backed securities 476,863 166 2,047 0 474,982 Single issue trust preferred securities 13,296 0 1,377 0 11,919 Other corporate securities 281,646 0 21,571 0 260,075 Total $ 3,282,690 $   966 $ 323,937 $ 0 $ 2,959,719 December 31, 2023 Gross Gross Allowance Estimated (Dollars in thousands) Amortized Unrealized Unrealized For Credit Fair Cost Gains Losses Losses Value U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 492,638 $ 4 $ 7,692 $ 0 $ 484,950 State and political subdivisions 613,588 11 79,768 0 533,831 Residential mortgage-backed securities Agency 1,217,744 7 167,810 0 1,049,941 Non-agency 100,364 0 9,753 0 90,611 Commercial mortgage-backed securities Agency 511,560 13 52,275 0 459,298 Asset-backed securities 872,048 44 11,454 0 860,638 Single issue trust preferred securities 16,380 0 1,239 0 15,141 Other corporate securities 325,573 0 33,606 0 291,967 Total $ 4,149,895 $  79 $ 363,597 $  0 $  3,786,377
Summary of Securities Available for Sale in an Unrealized Loss Position	The following is a summary of securities available for sale which were in an unrealized loss position at December 31, 2024 and December 31, 2023. Less than 12 months 12 months or longer Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Losses Value Losses Value Losses December 31, 202 4 U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 1,476 $ 3 $ 42,886 $ 3,081 $ 44,362 $ 3,084 State and political subdivisions 3,314 22 479,681 79,493 482,995 79,515 Residential mortgage-backed securities Agency 128,655 1,660 856,448 165,454 985,103 167,114 Non-agency 0 0 59,668 6,531 59,668 6,531 Commercial mortgage-backed securities Agency 0 0 319,506 42,698 319,506 42,698 Asset-backed securities 83,188 50 215,886 1,997 299,074 2,047 Single issue trust preferred securities 0 0 11,919 1,377 11,919 1,377 Other corporate securities 2,476 24 252,634 21,547 255,110 21,571 Total $ 219,109 $ 1,759 $ 2,238,628 $ 322,178 $ 2,457,737 $ 323,937 Less than 12 months 12 months or longer Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Losses Value Losses Value Losses December 31, 2023 U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 4,625 $ 11 $ 477,615 $ 7,681 $ 482,240 $ 7,692 State and political subdivisions 2,050 193 517,186 79,575 519,236 79,768 Residential mortgage-backed securities Agency 9,755 51 1,038,632 167,759 1,048,387 167,810 Non-agency 8,964 101 81,647 9,652 90,611 9,753 Commercial mortgage-backed securities Agency 0 0 456,866 52,275 456,866 52,275 Asset-backed securities 15,866 216 829,778 11,238 845,644 11,454 Single issue trust preferred securities 2,922 182 12,219 1,057 15,141 1,239 Other corporate securities 0 0 274,308 33,606 274,308 33,606 Total $ 44,182 $ 754 $ 3,688,251 $ 362,843 $ 3,732,433 $ 363,597
Summary of Gains or Losses on Proceeds from Maturities, Sales and Calls of Available for Sale Securities by Specific Identification Method	The following table shows the proceeds from maturities, sales and calls of available for sale securities and the gross realized gains and losses on sales and calls of those securities that have been included in earnings as a result of any sales and calls. Gains or losses on sales and calls of available for sale securities were recognized by the specific identification method. Year Ended (In thousands)  2024   2023   2022  Proceeds from maturities, sales and calls $ 2,914,095 $  952,213  $  575,748  Gross realized gains 0 0 2 Gross realized losses 16,296  7,659  0
Summary of Maturities of Debt Securities Held to Maturity by Amortized Cost and Estimated Fair Value	(In thousands)  Amortized   Estimated  Due in one year or less $ 262,093 $ 261,458 Due after one year through five years 405,617 375,276 Due after five years through ten years 863,601 779,069 Due after ten years 1,751,379 1,543,916 Total $ 3,282,690 $ 2,959,719
Summary of Equity Securities	Year Ended (In thousands) December 31, 2024 December 31, 2023 Net gains recognized during the period on equity securities sold $ 4,602 $ 0 Unrealized gains recognized during the period on equity securities still held at period end 4,259 358 Unrealized losses recognized during the period on equity securities still held at period end (285 ) (345 ) Net gains (losses) recognized during the period $ 8,576 $ 13

Loans and Leases (Tables)

Loans and Leases (Tables)	12 Months Ended
	Dec. 31, 2024
Receivables [Abstract]
Major Classes of Loans And Leases	Major classes of loans and leases are as follows: (In thousands) December 31, December 31, Commercial, financial and agricultural: Owner-occupied commercial real estate $ 1,590,002 $ 1,598,231 Nonowner-occupied commercial real estate 6,939,641 6,718,343 Other commercial 3,351,362 3,572,440 Total commercial, financial & agricultural 11,881,005 11,889,014 Residential real estate 5,507,384 5,271,236 Construction & land development 3,509,034 3,148,245 Consumer: Bankcard 9,998 9,962 Other consumer 773,077 1,054,728 Less: Unearned income (7,005 ) (14,101 ) Loans and leases, net of unearned income $ 21,673,493 $ 21,359,084

Credit Quality (Tables)

Credit Quality (Tables)	12 Months Ended
	Dec. 31, 2024
Text Block [Abstract]
Schedule of Age Analysis of its Past Due Loans, Segregated by Class of Loans and Leases	The following table sets forth United’s age analysis of its past due loans and leases, segregated by class of loans and leases: Age Analysis of Past Due Loans and Leases As of December 31, 2024 (In thousands) 30-89 90 Days or  Total Past  Current & Total Financing 90 Days or Commercial real estate: Owner-occupied $ 3,767 $ 1,284 $ 5,051 $ 1,584,951 $ 1,590,002 $ 0 Nonowner-occupied 11,931 23,379 35,310 6,904,331 6,939,641 0 Other commercial 5,594 19,019 24,613 3,326,749 3,351,362 431 Residential real estate 33,783 20,946 54,729 5,452,655 5,507,384 12,429 Construction & land development 390 4,265 4,655 3,504,379 3,509,034 1,677 Consumer: Bankcard 63 61 124 9,874 9,998 61 Other consumer 28,414 4,446 32,860 740,217 773,077 2,342 Total $    83,942 $    73,400 $    157,342 $    21,523,156 $    21,680,498 $    16,940 Age Analysis of Past Due Loans and Leases As of December 31, 2023 (In thousands) 30-89 90 Days or  Total Past  Current & Total Financing 90 Days or Past Due & Commercial real estate: Owner-occupied $ 6,361 $ 6,335 $ 12,696 $ 1,585,535 $ 1,598,231 $ 110 Nonowner-occupied 10,373 13,146 23,519 6,694,824 6,718,343 2,460 Other commercial 3,218 1,224 4,442 3,567,998 3,572,440 560 Residential real estate 26,523 12,136 38,659 5,232,577 5,271,236 6,244 Construction & land development 879 6,423 7,302 3,140,943 3,148,245 0 Consumer: Bankcard 145 127 272 9,690 9,962 127 Other consumer 36,451 6,107 42,558 1,012,170 1,054,728 5,078 Total $ 83,950 $ 45,498 $ 129,448 $ 21,243,737 $ 21,373,185 $ 14,579
Schedule of Nonaccrual Loans, Segregated by Class of Loans and Leases	The following table sets forth United’s nonaccrual loans and leases, segregated by class of loans and leases: At December 31, 2024 At December 31, 2023 (In thousands) Nonaccruals With No Nonaccruals With No Commercial Real Estate: Owner-occupied $ 1,284 $ 1,284 $ 6,225 $ 6,225 Nonowner-occupied 23,379 8,475 10,686 10,686 Other Commercial 18,588 584 664 664 Residential Real Estate 8,517 5,562 5,892 5,892 Construction 2,588 2,589 6,423 6,423 Consumer: Bankcard 0 0 0 0 Other consumer 2,104 2,104 1,029 1,029 Total $ 56,460 $ 20,598 $ 30,919 $ 30,919
Schedule of Amortized Cost Loans and Leases Pledged As Collateral	The following table presents the amortized cost basis of collateral-dependent loans and leases in which repayment is expected to be derived substantially through the operation or sale of the collateral and where the borrower is experiencing financial difficulty, by class of loans and leases as of December 31, 2024 and December 31, 2023: Collateral Dependent Loans and Leases At December 31, 2024 (In thousands) Residential Business Land Commercial Other Total Commercial real estate: Owner-occupied $ 5 $ 0 $ 0 $ 3,119 $ 6,465 $ 9,589 Nonowner-occupied 7,037 0 0 23,975 2,367 33,379 Other commercial 0 15,816 0 5,041 528 21,385 Residential real estate 7,348 0 0 0 11 7,359 Construction & land development 0 0 2,492 0 873 3,365 Consumer: Bankcard 0 0 0 0 0 0 Other consumer 0 0 0 0 0 0 Total $ 14,390 $ 15,816 $ 2,492 $ 32,135 $ 10,244 $ 75,077 Collateral Dependent Loans and Leases At December 31, 2023 (In thousands) Residential Business Land Commercial Other Total Commercial real estate: Owner-occupied $ 27 $ 0 $ 0 $ 5,208 $ 9,272 $ 14,507 Nonowner-occupied 11,200 0 0 13,555 1,810 26,565 Other commercial 0 891 0 5,193 256 6,340 Residential real estate 9,775 0 0 0 0 9,775 Construction & land development 954 0 3,661 0 3,314 7,929 Consumer: Bankcard 0 0 0 0 0 0 Other consumer 0 0 0 0 0 0 Total $ 21,956 $ 891 $ 3,661 $ 23,956 $ 14,652 $ 65,116
Schedule of Risk Category of Loans by Class of Loans and Leases	Based on the most recent analysis performed, the risk category of loans and leases as well as charge-offs and recoveries by class of loans is as follows. Loans originated in any year may be renewals of existing loans and not necessarily new loans. Commercial Real Estate – Owner-occupied Revolving loans converted to (In thousands) Term Loans Origination Year Revolving loans As of December 31, 2024 2024 2023 2022 2021 2020 Prior basis term loans Total Internal Risk Grade: Pass $ 236,547 $ 132,095 $ 243,103 $ 225,152 $ 205,461 $ 467,417 $ 29,900 $ 0 $ 1,539,675 Special Mention 0 0 0 0 0 15,199 8,545 0 23,744 Substandard 247 0 3,493 0 307 21,744 445 121 26,357 Doubtful 0 0 0 0 0 226 0 0 226 Total $ 236,794 $ 132,095 $ 246,596 $ 225,152 $ 205,768 $ 504,586 $ 38,890 $ 121 $ 1,590,002 Current-period charge-offs 0 0 0 0 0 (116 ) 0 0 (116 ) Current-period recoveries 0 0 15 0 0 1,168 0 0 1,183 Current-period net recoveries  $        0 $        0 $         15 $        0 $        0 $     1,052 $    0 $       0 $   1,067 (In thousands) Term Loans Origination Year Revolving loans Revolving loans and converted As of December 31, 2023 2023 2022 2021 2020 2019 Prior basis term loans Total Internal Risk Grade: Pass $ 132,376   $ 316,117   $ 246,635 $ 248,861 $ 109,182 $ 465,223 $ 29,619 $ 0 $ 1,548,013 Special Mention 0 0 0 0 2,460 15,423 125 0 18,008 Substandard 0 1,734 274 475 436 28,469 449 129 31,966 Doubtful 0 0 0 0 0 244 0 0 244 Total $ 132,376 $ 317,851 $ 246,909 $ 249,336 $ 112,078 $ 509,359 $  30,193 $ 129 $ 1,598,231 Current-period charge-offs 0 0 0 0 0 (855 ) 0 0 (855 ) Current-period recoveries 0 13 0 0 0 174 0 0 187 Current-period net recoveries (charge-offs) $        0 $        13 $          0 $       0 $       0 $     (681) $         0 $   0 $     (668) Commercial Real Estate – Nonowner-occupied (In thousands) Term Loans Origination Year Revolving loans Revolving loans As of December 31, 2024 2024 2023 2022 2021 2020 Prior basis term loans Total Internal Risk Grade: Pass $ 741,996 $ 485,437 $ 1,623,423 $ 1,294,232 $ 639,143 $ 1,584,833 $ 160,243 $ 78 $ 6,529,385 Special Mention 0 0 8,465 82,240 29,940 210,912 0 0 331,557 Substandard 0 0 4,085 4,020 143 48,633 21,818 0 78,699 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 741,996 $ 485,437 $ 1,635,973 $ 1,380,492 $ 669,226 $ 1,844,378 $ 182,061 $ 78 $ 6,939,641 Current-period charge-offs 0 0 0 0 (751 ) (1,830 ) 0 0 (2,581 ) Current-period recoveries 0 0 0 0 0 200 0 0 200 Current-period net recoveries (charge-offs) $ 0 $ 0 $ 0 $ 0 $ (751 ) $ (1,630 ) $ 0 $ 0 $ (2,381 ) (In thousands) Term Loans Origination Year Revolving loans basis Revolving loans and leases converted to As of December 31, 2023 Internal 2023 2022 2021 2020 2019 Prior Total Pass $ 455,399 $ 1,428,880 $ 1,587,315 $ 717,189 $ 695,492 $ 1,335,526 $ 228,743 $ 106 $ 6,448,650 Special Mention 0 4,614 2,381 25,437 43,017 104,997 30,651 0 211,097 Substandard 0 0 4,020 4,736 3,493 46,347 0 0 58,596 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 455,399 $ 1,433,494 $ 1,593,716 $ 747,362 $ 742,002 $ 1,486,870 $ 259,394 $ 106 $ 6,718,343 Current-period charge-offs 0 0 0 0 0 (24 ) 0 0 (24 ) Current-period recoveries 0 0 0 0 0 1,233 0 0 1,233 Current-period net recoveries $ 0 $ 0 $ 0 $ 0 $ 0 $ 1,209 $ 0 $ 0 $ 1,209 Other commercial (In thousands) Term Loans and leases Origination Year Revolving Revolving As of December 31, 2024 2024 2023 2022 2021 2020 Prior basis term loans Total Internal Risk Grade: Pass $ 403,641 $ 505,947 $ 378,072 $ 394,412 $ 164,671 $ 519,488 $ 912,293 $ 0 $ 3,278,524 Special Mention 81 36 1,129 339 251 18,941 4,652 0 25,429 Substandard 206 419 18,927 7,029 835 11,262 8,706 0 47,384 Doubtful 0 0 0 0 0 25 0 0 25 Total $ 403,928 $ 506,402 $ 398,128 $ 401,780 $ 165,757 $ 549,716 $ 925,651 $ 0 $ 3,351,362 Current-period charge-offs 0 (464 ) (252 ) (156 ) (148 ) (1,352 ) (1,217 ) 0 (3,589 ) Current-period recoveries 10 67 9 45 0 1,512 7 0 1,650 Current-period net (charge- offs) recoveries $ 10 $ (397 ) $ (243 ) $ (111 ) $ (148 ) $ 160 $ (1,210 ) $ 0 $ (1,939 ) (In thousands) Term Loans and leases Origination Year Revolving Revolving As of December 31, 2023 2023 2022 2021 2020 2019 Prior basis Total Internal Risk Grade: Pass $ 593,153 $ 596,258 $ 477,457 $ 197,173 $ 187,560 $ 447,430 $ 988,809 $ 13 $ 3,487,853 Special Mention 221 4,798 542 1,775 1,611 2,093 16,901 15 27,956 Substandard 1,059 16,248 306 792 660 11,923 25,597 0 56,585 Doubtful 0 0 0 0 0 46 0 0 46 Total $ 594,433 $ 617,304 $ 478,305 $ 199,740 $ 189,831 $ 461,492 $ 1,031,307 $ 28 $ 3,572,440 Current-period charge-offs (88 ) (163 ) (233 ) 0 (661 ) (567 ) (217 ) (78 ) (2,007 ) Current-period recoveries 0 0 0 0 25 1,699 5 0 1,729 Current-period net (charge- offs) recoveries $ (88 ) $ (163 ) $ (233 ) $ 0 $ (636 ) $ 1,132 $ (212 ) $ (78 ) $ (278 ) Residential Real Estate (In thousands) Term Loans Origination Year Revolving basis Revolving loans converted to term loans As of December 31, 2024 2024 2023 2022 2021 2020 Prior Total Internal Risk Grade: Pass $ 407,430 $ 820,059 $ 1,617,541 $ 827,395 $ 396,094 $ 971,226 $ 447,363 $ 2,467 $ 5,489,575 Special Mention 382 107 0 0 0 2,466 1,326 0 4,281 Substandard 0 0 0 508 0 12,430 507 83 13,528 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 407,812 $ 820,166 $ 1,617,541 $ 827,903 $ 396,094 $ 986,122 $ 449,196 $ 2,550 $ 5,507,384 Current-period charge-offs 0 (7 ) (2 ) 0 0 (359 ) (113 ) 0 (481 ) Current-period recoveries 0 0 0 5 0 489 1 0 495 Current-period net (charge- offs) recoveries $ 0 $ (7 ) $ (2 ) $ 5 $ 0 $ 130 $ (112 ) $ 0 $ 14 (In thousands) Term Loans Origination Year Revolving loans a mortized cost Revolving term loans As of December 31, 2023 2023 2022 2021 2020 2019 Prior basis Total Internal Risk Grade: Pass $ 783,866 $ 1,618,774 $ 850,760 $ 443,514 $ 262,524 $ 863,186 $ 423,302 $ 2,568 $ 5,248,494 Special Mention 0 0 0 0 65 3,561 1,710 0 5,336 Substandard 51 75 386 258 599 14,827 1,121 89 17,406 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 783,917 $ 1,618,849 $ 851,146 $ 443,772 $ 263,188 $ 881,574 $ 426,133 $ 2,657 $ 5,271,236 Current-period charge-offs 0 0 0 0 (785 ) 0 0 0 (785 ) Current-period recoveries 0 0 8 0 688 1 0 0 697 Current-period net recoveries (charge-offs) $ 0 $ 0 $ 8 $ 0 $ (97 ) $ 1 $ 0 $ 0 $ (88 ) Construction and Land Development (In thousands) Term Loans Origination Year Revolving loans Revolving loans term loans As of December 31, 2024 2024 2023 2022 2021 2020 Prior basis Total Internal Risk Grade: Pass $ 628,186 $ 837,662 $ 1,253,480 $ 426,662 $ 18,559 $ 18,542 $ 302,302 $ 0 $ 3,485,393 Special Mention 0 0 1,455 18,356 57 153 0 0 20,021 Substandard 0 0 0 200 1,607 1,813 0 0 3,620 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 628,186 $ 837,662 $ 1,254,935 $ 445,218 $ 20,223 $ 20,508 $ 302,302 $ 0 $ 3,509,034 Current-period charge-offs 0 0 0 0 0 (29 ) 0 0 (29 ) Current-period recoveries 0 0 0 0 0 319 0 0 319 Current-period net (charge- offs) recoveries $ 0 $ 0 $ 0 $ 0 $ 0 $ 290 $ 0 $ 0 $ 290 (In thousands) Term Loans Origination Year Revolving loans Revolving As of December 31, 2023 2023 2022 2021 2020 2019 Prior basis term loans Total Internal Risk Grade: Pass $ 628,047 $ 1,308,793 $ 827,138 $ 53,004 $ 16,062 $ 60,920 $ 239,390 $ 0 $ 3,133,354 Special Mention 0 2,902 0 62 3,386 258 0 0 6,608 Substandard 0 1,091 2,490 2,470 0 2,232 0 0 8,283 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 628,047 $ 1,312,786 $ 829,628 $ 55,536 $ 19,448 $ 63,410 $ 239,390 $ 0 $ 3,148,245 Current-period charge-offs 0 0 0 0 0 (14 ) 0 0 (14 ) Current-period recoveries 0 0 0 0 0 80 0 0 80 Current-period net recoveries $ 0 $ 0 $ 0 $ 0 $ 0 $ 66 $ 0 $ 0 $ 66 Bankcard Revolving loans converted to Term Loans Origination Year Revolving loans (In thousands) amortized As of December 31, 2024 2024 2023 2022 2021 2020 Prior basis term loans Total Internal Risk Grade: Pass  $        0 $        0 $        0 $        0 $        0 $        0 $ 9,874 $ 0 $   9,874 Special Mention 0 0 0 0 0 0 63 0 63 Substandard 0 0 0 0 0 0 61 0 61 Doubtful 0 0 0 0 0 0 0 0 0 Total  $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 9,998 $ 0 $ 9,998 Current-period charge-offs 0 0 0 0 0 0 (431 ) 0 (431 ) Current-period recoveries 0 0 0 0 0 0 19 0 19 Current-period net charge-offs  $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ (412 ) $ 0 $ (412 ) Revolving Term Loans Origination Year Revolving loans loans (In thousands) amortized cost     As of December 31, 2023 2023 2022 2021 2020 2019 Prior basis term loans Total Internal Risk Grade: Pass  $        0 $        0 $        0 $        0 $        0 $        0 $ 9,690 $ 0 $   9,690 Special Mention 0 0 0 0 0 0 145 0 145 Substandard 0 0 0 0 0 0 127 0 127 Doubtful 0 0 0 0 0 0 0 0 0 Total  $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 9,962 $ 0 $ 9,962 Current-period charge-offs 0 0 0 0 0 0 (263 ) 0 (263 ) Current-period recoveries 0 0 0 0 0 0 28 0 28 Current-period net charge-offs  $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ (235 ) $ 0 $ (235 ) Other Consumer Revolving Term Loans Origination Year Revolving loans loans (In thousands) amortized cost     As of December 31, 2024 2024 2023 2022 2021 2020 Prior basis term loans Total Internal Risk Grade: Pass  $  139,908 $ 131,108 $ 276,041 $ 118,478 $ 49,553 $ 22,913 $ 2,215 $ 0 $ 740,216 Special Mention 495 1,805 13,462 8,485 2,704 1,440 23 0 28,414 Substandard 76 182 2,454 1,106 358 261 10 0 4,447 Doubtful 0 0 0 0 0 0 0 0 0 Total  $ 140,479 $ 133,095 $ 291,957 $ 128,069 $ 52,615 $ 24,614 $ 2,248 $ 0 $ 773,077 Current-period charge-offs (28 ) (206 ) (5,724 ) (3,096 ) (869 ) (380 ) 0 0 (10,303 ) Current-period recoveries 0 21 402 241 125 330 0 0 1,119 Current-period net charge-offs  $ (28 ) $ (185 ) $ (5,322 ) $ (2,855 ) $ (744 ) $ (50 ) $ 0 $ 0 $ (9,184 ) Revolving Term Loans Origination Year Revolving loans loans (In thousands) amortized cost     As of December 31, 2023 2023 2022 2021 2020 2019 Prior basis term loans Total Internal Risk Grade: Pass  $  192,184 $  428,295 $ 205,015 $ 102,300 $ 62,861 $ 18,876 $ 2,638 $ 0 $ 1,012,169 Special Mention 674 16,031 12,220 4,454 2,050 977 46 0 36,452 Substandard 0 3,010 2,207 647 126 96 21 0 6,107 Doubtful 0 0 0 0 0 0 0 0 0 Total  $ 192,858 $ 447,336 $ 219,442 $ 107,401 $ 65,037 $ 19,949 $ 2,705 $ 0 $ 1,054,728 Current-period charge-offs (9 ) (3,205 ) (2,699 ) (933 ) (319 ) (191 ) 0 0 (7,356 ) Current-period recoveries 0 219 125 54 54 235 0 0 687 Current-period net (charge-  $ (9 ) $ (2,986 ) $ (2,574 ) $ (879 ) $ (265 ) $ 44 $ 0 $ 0 $ (6,669 )
Schedule of Financial Effect of Loan and Lease Modifications	The following table presents the financial effect of loan and lease modifications to borrowers experiencing financial difficulty for the year ended December 31, 2024 and 2023. For the Year Ended December 31, 2024 December 31, 2023 Weighted- Average  Interest Rate  Reduction Weighted  Average Term  Extension (in years) Weighted- Average Weighted (in years) Commercial Real Estate: Owner-occupied   0.00 %   0.3   0.00 %   1.0 Nonowner-occupied 0.00 % 0.5 1.50 % 1.4 Other Commercial 1.00 % 0.3 0.00 % 1.8 Residential Real Estate 0.00 % 4.9 0.00 % 4.6 Construction & land development 0.00 % 4.5 0.00 % 0 Consumer: Bankcard 0.00 % 0 0.00 % 0 Other consumer   0.00 % 0 0.00 %   0
Schedule of Amortized Cost Basis Payment Status	Payment Status (Amortized Cost Basis) As of December 31, 2024 As of December 31, 2023 Current 30-89  Days Past  Due 90+  Days Past  Due Current 30-89  Days Past  Due 90+  Days Past  Due Commercial real estate: Owner-occupied $ 445 $ 0 $ 0 $ 484 $ 0 $ 0 Nonowner-occupied 1,366 4,399 0 33,370 0 0 Other commercial 2,400 0 0 65 100 0 Residential real estate 297 56 0 506 0 0 Construction & land development 52 0 0 0 0 0 Consumer: Bankcard 0 0 0 0 0 0 Other consumer 0 0 0 0 0 0 Total $ 4,560 $ 4,455 $ 0 $ 34,425 $ 100 $ 0
Schedule of Amortized Cost Basis of Loan Modifications Made to Borrowers	Amortized Cost Basis of L o For the Year ended December 31, 2024 Term  Interest Rate  Term Extension & Term Extension & Payment Delay % of Total Class of Commercial real estate: Owner-occupied $ 445 $ 0 $ 0 $ 0 0.03 % Nonowner-occupied 5,765 0 0 0 0.08 % Other commercial 0 0 2,400 0 0.00 % Residential real 185 0 0 168 0.06 % Construction & land development 52 0 0 0 0.00 % Consumer: Bankcard 0 0 0 0 0.00 % Other consumer 0 0 0 0 0.00 % Total $   6,447 $   0 $   2,400 $   168 0.04 % Amortized Cost Basis of Loan Modifications Made to Borrowers Experiencing Financial Difficulty For the Year ended December 31, 2023 Term  Interest Rate  Term Extension & Term Extension & % of Total Class of Commercial real estate: Owner-occupied $ 484 $ 0 $ 0 $ 0 0.03 % Nonowner-occupied 31,633 1,737 0 0 0.50 % Other commercial 165 0 0 0 0.00 % Residential real 506 0 0 0 0.01 % Construction & land development 0 0 0 0 0.00 % Consumer: Bankcard 0 0 0 0 0.00 % Other consumer 0 0 0 0 0.00 % Total $   32,788 $   1,737 $   0 $   0 0.16 % Amortized Cost Basis of Modified Loans That Subsequently Defaulted For the Year ended December 31, 2024 Term  Extension   Interest Rate  Reduction Term Extension & Interest Rate Reduction Term Extension & Payment Delay % of Total Class of  Financing Receivable  Commercial real estate: Owner-occupied $ 0 $ 0 $ 0 $ 0 0.00 % Nonowner-occupied 0 0 0 0 0.00 % Other commercial 0 0 0 0 0.00 % Residential real estate 0 0 0 0 0.00 % Construction & land development 0 0 0 674 0.02 % Consumer: Bankcard 0 0 0 0 0.00 % Other consumer 0 0 0 0 0.00 % Total $ 0 $ 0 $ 0 $ 674 0.00 %

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	12 Months Ended
	Dec. 31, 2024
Receivables [Abstract]
Schedule Of Credit Losses Related To Accrued Interest Receivables and Written Off	The following table represents the accrued interest receivable as of December 31, 2024 and December 31, 2023: Accrued Interest Receivable (In thousands) At December 31, 2024 At December 31, 2023 Commercial Real Estate: Owner-occupied $ 4,700 $ 4,751 Nonowner-occupied 30,582 27,507 Other Commercial 10,512 14,562 Residential Real Estate 21,662 20,718 Construction 17,174 18,504 Consumer: Bankcard 0 0 Other consumer 2,432 2,921 Total $ 87,062 $ 88,963
Schedule of Accrued Interest Receivables Written off by Reversing Interest	The following table represents the accrued interest receivables written off by reversing interest income for the year ended December 31, 2024 and December 31, 2023: Accrued Interest Receivables Written Off (In thousands) Year Ended 2024 2023 Commercial Real Estate: Owner-occupied $ 186 $ 31 Nonowner-occupied 853 85 Other Commercial 736 39 Residential Real Estate 232 214 Construction 23 285 Consumer: Bankcard 0 0 Other consumer 345 371 Total $ 2,375 $ 1,025
Schedule of Allowance for Loan Losses and Carrying Amount of Loans	A progression of the allowance for loan losses, by portfolio segment, for the periods indicated is summarized as follows: Allowance for Loan and Lease Losses and Carrying Amount of Loans and Leases For the Year Ended December 31, 2024 (In thousands) Commercial Real Other Residential Construction & Bankcard Total Owner- Nonowner- Other Allowance for Loan and Lease Losses: Beginning balance $ 11,895 $ 57,935 $ 75,007 $ 41,167 $ 59,913 $ 810 $ 12,510 $ 259,237 Charge-offs (116) (2,581) (3,589) (481) (29) (431) (10,303) (17,530) Recoveries 1,183 200 1,650 495 319 19 1,119 4,985 Provision (1,110) 18,968 (7,963) 5,192 3,418 493 6,154 25,152 Ending balance $ 11,852 $ 74,522 $ 65,105 $ 46,373 $ 63,621 $ 891 $ 9,480 $ 271,844 Allowance for Loan and Lease Losses and Carrying Amount of Loans and Leases For the Year Ended December 31, 2023 (In thousands) Commercial Real Other Residential Construction & Bankcard Total Owner- Nonowner- Other Allowance for Loan and Lease Losses: Beginning balance $ 13,945 $ 38,543 $ 79,706 $ 36,227 $ 48,390 $ 561 $ 17,374 $ 234,746 Charge-offs (855) (24) (2,007) (785) (14) (263) (7,356) (11,304) Recoveries 187 1,233 1,729 697 80 28 687 4,641 Provision (1,382) 18,183 (4,421) 5,028 11,457 484 1,805 31,154 Ending balance $ 11,895 $ 57,935 $ 75,007 $ 41,167 $ 59,913 $ 810 $ 12,510 $ 259,237 A progression of the allowance for credit losses, which includes the allowance for loan losses and the reserve for lending-related commitments, for the periods presented is summarized as follows:
Progression of Allowance for Credit Losses Including Allowance for Loan Losses and Reserve for Lending-Related Commitment	Year Ended December 31 (In thousands) 2024 2023 2022 Balance of allowance for loan and lease losses at beginning of period $ 259,237 $ 234,746 $ 216,016 Gross charge-offs (17,530 ) (11,304 ) (9,650 ) Recoveries 4,985 4,641 9,549 Net charge-offs (12,545 ) (6,663 ) (101 ) Provision for loan and lease losses 25,152 31,154 18,831 Balance of allowance for loan and lease losses at end of period $ 271,844 $ 259,237 $ 234,746 Reserve for lending-related commitments 34,911 44,706 46,189 Balance of allowance for credit losses at end of period $ 306,755 $ 303,943 $ 280,935

Bank Premises and Equipment (Ta

Bank Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Bank Premises and Equipment	Bank premises and equipment are summarized as follows: December 31 (In thousands) 2024 2023 Land $ 62,506 $ 62,506 Buildings and improvements 206,281 204,841 Leasehold improvements 43,971 42,752 Furniture, fixtures and equipment 109,510 118,514 422,268 428,613 Less allowance for depreciation and amortization (236,137 ) (238,093 ) Bank premises and equipment $ 186,131 $ 190,520

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Components of Lease Expense	The components of lease expense were as follows: Year Ended Year Ended (In thousands) Classification December 31, December 31, Operating lease cost Net occupancy expense $ 20,367 $ 21,280 Sublease income Net occupancy expense (184 ) (244 ) Net lease cost $ 20,183 $ 21,036
Supplemental Balance Sheet Information Related to Leases	Supplemental balance sheet information related to leases was as follows: (In thousands) Classification December 31, December 31, Operating lease right-of-use assets Operating lease right-of-use assets $ 81,742 $ 86,986 Operating lease liabilities Operating lease liabilities $ 86,771 $ 92,885
Other Information Related to Leases	Other information related to leases was as follows: December 31, Weighted-average remaining lease term: Operating leases 7.46 years Weighted-average discount rate: Operating leases 3.18 %
Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases was as follows: Year Ended (In thousands) December 31, 2024 December 31, 2023 Cash paid for amounts in the measurement of lease liabilities: Operating cash flows from operating leases $ 19,900 $ 21,581 ROU assets obtained in the exchange for lease liabilities 8,896 33,403
Maturities of Lease Liabilities by Year	Maturities of lease liabilities by year and in the aggregate, under operating leases with initial or remaining terms of one year or more, for years subsequent to December 31, 2024, consists of the following: Year Amount (Dollars in thousands) 2025 $ 17,115 2026 15,501 2027 13,597 2028 11,628 2029 9,700 Thereafter 30,807 Total lease payments 98,348 Less: imputed interest (11,577 ) Total $ 86,771

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Intangible Assets	The following is a summary of intangible assets subject to amortization and those not subject to amortization: December 31, 2024 Community Banking Total (In thousands) Gross Carrying Accumulated Gross Carrying Accumulated Amortized intangible assets: Core deposit intangible assets $ 105,165 ($ 96,299 ) $ 105,165 ($ 96,299 ) Community Banking Total (In thousands) Gross Carrying Accumulated Gross Carrying Accumulated Goodwill not subject to amortization $ 1,888,889 $ 1,888,889 December 31, 2023 Community Banking Mortgage Banking Total (In thousands) Gross Accumulated Gross Accumulated Gross Accumulated Amortized intangible assets: Core deposit intangible assets $ 105,165 ($ 92,660 ) $ 0 $ 0 $ 105,165 ($ 92,660 ) Goodwill not subject to amortization $ 1,883,574 $ 5,315 $ 1,888,889
Schedule of Anticipated Amortization Expense	The following table sets forth the anticipated amortization expense for intangible assets for the years subsequent to 2024: Year Amount (Dollars in thousands) 2025 $ 3,282 2026 2,758 2027 1,152 2028 560 2029 535 2030 and thereafter 579

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	12 Months Ended
	Dec. 31, 2024
Servicing Asset [Abstract]
Summary of Activity in Mortgage Servicing Rights	The following presents the activity in mortgage servicing rights, including their valuation allowance for the year ended December 31, 2024 and 2023: (In thousands) Year Ended December 31, 2024 Year Ended December 31, 2023 MSRs beginning balance $ 4,554 $ 21,022 Amount sold (3,934 ) (15,001 ) Amount capitalized 0 715 Amount amortized (620 ) (2,182 ) MSRs ending balance $ 0 $ 4,554 MSRs valuation allowance beginning balance $ 0 $ 0 Aggregate additions charged and recoveries credited to operations 0 0 MSRs impairment 0 0 MSRs valuation allowance ending balance $ 0 $ 0 MSRs, net of valuation allowance $ 0 $ 4,554

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2024
Deposits [Abstract]
Book Value of Deposits	The book value of deposits consisted of the following: December 31 (In thousands)  2024   2023  Noninterest-bearing accounts $ 6,135,413 $ 6,149,080 Interest-bearing transaction accounts 5,936,925 5,648,135 Regular savings 1,250,295 1,345,258 Interest-bearing money market accounts 7,056,897 6,349,453 Time deposits under $100,000 1,172,462 1,066,092 Time deposits over $100,000 2,409,867 2,261,301 Total deposits $ 23,961,859 $ 22,819,319

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2024
Funds Purchased and Securities Sold Under Agreements to Repurchase and Weighted-Average Interest Rates	At December 31, 2024 and 2023, short-term borrowings were as follows: December 31 (In thousands)  2024   2023  Federal funds purchased $ 0 $ 0 Securities sold under agreements to repurchase 176,090 196,095 Total short-term borrowings $ 176,090 $ 196,095

Long-Term Borrowings (Tables)

Long-Term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
FHLB Advances and Related Weighted Average Interest Rates	At December 31, 2024 and 2023, FHLB advances and the related weighted-average interest rates were as follows: 2024 2023 (Dollars in thousands)  Amount  Weighted- Weighted-  Amount  Weighted- Weighted- FHLB advances $ 260,199 4.62 % 0.63 % $ 1,510,487 5.43 % 3.75 %
Information Related to Statutory Trusts	Information related to United’s statutory trusts is presented in the table below: (Dollars in thousands) Description Issuance Date Amount of Stated Interest Rate (1) Maturity Date United Statutory Trust III December 17, 2003 $ 20,000 3-month CME Term SOFR + 2.85% December 17, 2033 United Statutory Trust IV December 19, 2003 $ 25,000 3-month CME Term SOFR + 2.85% January 23, 2034 United Statutory Trust V July 12, 2007 $ 50,000 3-month CME Term SOFR + 1.55% October 1, 2037 United Statutory Trust VI September 20, 2007 $ 30,000 3-month CME Term SOFR + 1.30% December 15, 2037 Premier Statutory Trust II September 25, 2003 $ 6,000 3-month CME Term SOFR + 3.10% October 8, 2033 Premier Statutory Trust III May 16, 2005 $ 8,000 3-month CME Term SOFR + 1.74% June 15, 2035 Premier Statutory Trust IV June 20, 2006 $ 14,000 3-month CME Term SOFR + 1.55% September 23, 2036 Premier Statutory Trust V December 14, 2006 $ 10,000 3-month CME Term SOFR + 1.61% March 1, 2037 Centra Statutory Trust I September 20, 2004 $ 10,000 3-month CME Term SOFR + 2.29% September 20, 2034 Centra Statutory Trust II June 15, 2006 $ 10,000 3-month CME Term SOFR + 1.65% July 7, 2036 VCBI Capital Trust II December 19, 2002 $ 15,000 6-month CME Term SOFR + 3.30% December 19, 2032 VCBI Capital Trust III December 20, 2005 $ 25,000 3-month CME Term SOFR + 1.42% February 23, 2036 Cardinal Statutory Trust I July 27, 2004 $ 20,000 3-month CME Term SOFR + 2.40% September 15, 2034 UFBC Capital Trust I December 30, 2004 $ 5,000 3-month CME Term SOFR + 2.10% March 15, 2035 Carolina Financial Capital Trust I December 19, 2002 $ 5,000 Prime + 0.50% December 31, 2032 Carolina Financial Capital Trust II November 5, 2003 $ 10,000 3-month CME Term SOFR + 3.05% January 7, 2034 Greer Capital Trust I October 12, 2004 $ 6,000 3-month CME Term SOFR + 2.20% October 18, 2034 Greer Capital Trust II December 28, 2006 $ 5,000 3-month CME Term SOFR + 1.73% January 30, 2037 First South Preferred Trust I September 26, 2003 $ 10,000 3-month CME Term SOFR + 2.95% September 30, 2033 BOE Statutory Trust I December 12, 2003 $ 4,000 3-month CME Term SOFR + 3.00% December 12, 2033 (1) The 3-month CME Term SOFR rates have a spread adjustment of 0.26161% and the 6-month CME Term SOFR rate has a spread adjustment of 0.42826%.
Debentures and Related Weighted Average Interest Rates	At December 31, 2024 and 2023, the Debentures and their related weighted-average interest rates were as follows: 2024 2023 (Dollars in thousands) Amount Weighted- Amount Weighted- United Statutory Trust III  $ 20,619 7.46 %  $ 20,619 8.49 % United Statutory Trust IV 25,774 7.70 % 25,774 8.50 % United Statutory Trust V 51,547 6.40 % 51,547 7.21 % United Statutory Trust VI 30,928 5.92 % 30,928 6.95 % Premier Statutory Trust II 6,186 8.02 % 6,186 8.76 % Premier Statutory Trust III 8,248 6.95 % 8,248 7.39 % Premier Statutory Trust IV 14,433 6.15 % 14,433 7.17 % Premier Statutory Trust V 10,310 6.37 % 10,310 7.25 % Centra Statutory Trust I 10,000 6.91 % 10,000 7.92 % Centra Statutory Trust II 10,000 6.57 % 10,000 7.31 % Virginia Commerce Trust II 13,627 8.31 % 13,397 8.88 % Virginia Commerce Trust III 19,899 6.20 % 19,373 7.06 % Cardinal Statutory Trust I 16,812 7.02 % 16,414 8.05 % UFBC Capital Trust I 4,076 6.72 % 3,971 7.75 % Carolina Financial Capital Trust I 5,046 8.00 % 5,034 9.00 % Carolina Financial Capital Trust II 9,641 7.97 % 9,572 8.71 % Greer Capital Trust I 5,419 7.09 % 5,341 7.86 % Greer Capital Trust II 4,275 6.58 % 4,184 7.38 % First South Preferred Trust I 9,587 7.54 % 9,513 8.54 % BOE Statutory Trust I 3,794 7.59 % 3,772 8.59 % Total $ 280,221 6.88 % $ 278,616 7.75 %
Schedule of Maturities of Long-term Borrowings	At December 31, 2024, the scheduled maturities of long-term borrowings were as follows: Year Amount (Dollars in thousands) 2025  $ 260,199 2026 0 2027 0 2028 0 2029 0 2030 and thereafter 280,221 Total  $  540,420

Other Expense (Tables)

Other Expense (Tables)	12 Months Ended
	Dec. 31, 2024
Other Income and Expenses [Abstract]
Other Expense	The following details certain items of other expense for the periods indicated: Year Ended December 31 (In thousands) 2024 2023 2022 Legal, consulting & other professional services  $  24,330  $  25,604  $  24,403 Franchise & other taxes not on income 16,916 16,202 13,537 Expense for reserve on lending-related commitments (9,795 ) (1,483 ) 14,747 Automated Teller Machine (“ATM”) expenses 11,885 10,914 10,250 Amortization of income tax credits 15,277 15,238 13,567

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Income Tax Provisions Included in the Consolidated Statements of Income	The income tax provisions included in the consolidated statements of income are summarized as follows: Year Ended December 31 (In thousands) 2024 2023 2022 Current expense: Federal  $  77,347  $  84,441  $  86,799 State 17,604 15,972 16,244 Deferred expense (benefit): Federal 334 (2,053 ) (6,016 ) State (3,702 ) (868 ) (871 ) Total income taxes  $ 91,583  $ 97,492  $ 96,156
Reconciliation of Income Tax Expense to the Amount Computed by Applying the Statutory Federal Income Tax Rate	The following is a reconciliation of income tax expense to the amount computed by applying the statutory federal income tax rate to income before income taxes: Year Ended December 31 (Dollars in thousands) 2024 2023 2022 Amount % Amount % Amount % Tax on income before taxes at statutory federal rate  $  97,562 21.0 %  $  97,399 21.0 %  $  99,914 21.0 % Plus: State income taxes net of federal tax benefits 13,591 2.9 11,847 2.6 12,431 2.6 111,153 23.9 109,246 23.6 112,345 23.6 Increase (decrease) resulting from: Tax-exempt interest income (2,439 ) (0.5 ) (2,974 ) (0.6 ) (3,477 ) (0.7 ) Tax credits (16,520 ) (3.5 ) (15,196 ) (3.3 ) (14,326 ) (3.0 ) Other items-net (611 ) (0.2 ) 6,416 1.3 1,614 0.3 Income taxes  $ 91,583 19.7 %  $ 97,492 21.0 %  $ 96,156 20.2 %
Components of United's Deferred Tax Assets and Liabilities	Significant components of United’s deferred tax assets and liabilities (included in other assets in the Consolidated Balance Sheets) at December 31, 2024 and 2023 are as follows: (In thousands) 2024 2023 Deferred tax assets: Allowance for credit losses  $ 73,315  $ 70,818 Accrued benefits payable 20,256 18,287 Other accrued liabilities 1,857 2,857 Unrealized loss on securities available for sale 77,189 84,683 Other real estate owned 127 512 Lease liabilities under operating leases 20,738 21,642 Income tax credit carryforward 4,415 0 Deferred mortgage points 425 2,081 Total deferred tax assets 198,322 200,880 Deferred tax liabilities: Premises and equipment 8,307 8,789 Right-of-use assets under operating leases 19,536 20,267 Pension plan accruals 10,743 7,251 Derivatives 10,487 12,137 Purchase accounting intangibles 6,626 5,940 Other 1,063 1,497 Total deferred tax liabilities 56,762 55,881 Net deferred tax assets  $ 141,560  $ 144,999
Reconciliation of the Total Amounts of Unrecognized Tax Benefits	Below is a reconciliation of the total amounts of unrecognized tax benefits: December 31 (In thousands) 2024 2023 Unrecognized tax benefits at beginning of year  $ 2,599  $ 2,521 Increase in unrecognized tax benefits as a result of tax positions taken during the current period 323 242 Decreases in the unrecognized tax benefits as a result of a lapse of the applicable statute of limitations (778 ) (164 ) Unrecognized tax benefits at end of year  $ 2,144  $ 2,599

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2024
Retirement Benefits [Abstract]
Net Periodic Pension Cost	Net consolidated periodic pension cost included the following components: (Dollars in thousands) Year Ended December 31, 2024 2023 2022 Service cost  $ 1,387  $ 1,440  $ 2,669 Interest cost 6,967 7,134 4,988 Expected return on plan assets (10,659 ) (11,762 ) (12,942 ) Amortization of net actuarial loss 2,315 3,347 3,645 Net periodic pension cost (income)  $ 10  $ 159  $ (1,640 ) Weighted-Average Assumptions: Discount rate 5.07 % 5.26 % 3.08 % Expected return on assets 6.25 % 7.25 % 6.25 % Rate of compensation increase (prior to age 40) 5.00 % 5.00 % 5.00 % Rate of compensation increase (ages 40-54) 4.00 % 4.00 % 4.00 % Rate of compensation increase (otherwise) 3.50 % 3.50 % 3.50 %
Schedule of Amounts Related to Plan recognized as Component of Other Comprehensive Income	Amounts related to the Plan recognized as a component of other comprehensive income were as follows: (In thousands) Year Ended December 31,  2024   2023   2022  Net actuarial gain  $ (12,348 )  $ (2,635 )  $ (2,195 ) Amortization of actuarial loss (2,315 ) (3,347 ) (3,645 ) Total recognized in other comprehensive income  $ (14,663 )  $ (5,982 )  $ (5,840 )
Reconciliation of the Beginning and Ending Balances of the Projected Benefit Obligation and the Fair Value of Plan Assets and the Accumulated Benefit Obligation	The reconciliation of the beginning and ending balances of the projected benefit obligation and the fair value of plan assets for the years ended December 31, 2024 and 2023 and the accumulated benefit obligation at December 31, 2024 and 2023 are as follows: (Dollars in thousands) December 31,  2024   2023  Change in Projected Benefit Obligation Projected Benefit Obligation at the Beginning of the Year  $   143,306  $   140,609 Service Cost 1,387 1,440 Interest Cost 6,967 7,134 Actuarial (Gain) Loss (7,506 ) 4,918 Lump Sum Window Payments 0 (4,546 ) Benefits Paid (6,307 ) (6,249 ) Projected Benefit Obligation at the End of the Year  $ 137,847  $ 143,306 Accumulated Benefit Obligation at the End of the Year  $ 125,429  $ 131,758 Change in Plan Assets Fair Value of Plan Assets at the Beginning of the Year  $ 173,840  $ 165,320 Actual Return on Plan Assets 15,502 19,315 Lump Sum Window Payments 0 (4,546 ) Benefits Paid (6,307 ) (6,249 ) Fair Value of Plan Assets at End of Year  $ 183,035  $ 173,840 Net Amount Recognized Funded Status  $ 45,187  $ 30,534 Unrecognized Actuarial Net Loss 17,884 32,548 Net Amount Recognized  $ 63,071  $ 63,082 Weighted-Average Assumptions at the End of the Year Discount Rate 5.76 % 5.07 % Rate of compensation Increase (prior to age 40) 6.00 % 5.00 % Rate of compensation Increase (ages 40-49) 5.50 % —  Rate of compensation Increase (ages 50-54) 5.00 % —  Rate of compensation Increase (ages 40-54) —  4.00 % Rate of compensation Increase (ages 55-64) 4.00 % —  Rate of compensation Increase (otherwise) 3.00 % 3.50 %
Asset Allocation for the Defined Benefit Pension Plan as of the Measurement Date, by Asset Category	Asset allocation for the defined benefit pension plan as of the measurement date, by asset category, is as follows: Plan Assets Target Allocation 2025 Allowable Allocation Range Percentage of Plan Assets at December 31, December 31, Equity Securities 48 % 20-70 % 56% 56% Fixed Income Securities 42 % 20-50 % 41% 41% Other 10 % 0-25 % 3% 3% Total 100% 100%
Expected Benefit Payments	At December 31, 2024, the benefits expected to be paid in each of the next five fiscal years, and in the aggregate for the five years thereafter are as follows: Year  Amount  (Dollars in thousands) 2025 $ 7,361 2026 7,381 2027 7,775 2028 8,274 2029 8,633 2030 through 2034 47,114
Balances of the Plan Assets, by Fair Value Hierarchy Level	The following tables present the balances of the plan assets, by fair value hierarchy level, as of December 31, 2024 and 2023: Fair Value Measurements at December 31, 2024 Using (In thousands) Description Balance as of December 31, Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Cash and Cash equivalents  $ 5,829  $ 5,829  $ 0  $ 0 Fixed Income Debt Securities: U.S. Government and agencies 24,874 24,874 0 0 Mortgage backed securities 6,588 6,588 0 0 Collateralized mortgage obligations 623 623 Municipal obligations 707 707 0 0 Corporate bonds 8,394 8,394 0 0 Fixed Income Mutual Funds: General 33,537 33,537 0 0 Fair Value Measurements at December 31, 2024 Using (In thousands) Description Balance as of December 31, Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Equity Securities: Common stock 19,539 19,539 0 0 Equity Mutual Funds: Domestic equity large cap 37,990 37,990 0 0 Domestic equity small cap 13,332 13,332 0 0 Alternative equity 16,145 16,145 International emerging equity 3,993 3,993 0 0 International equity developed 11,484 11,484 0 0 Total  $   183,035  $   183,035  $   0  $   0 Fair Value Measurements at December 31, 2023 Using (In thousands) Description Balance as of December 31, Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Cash and Cash equivalents  $ 4,565  $ 4,565  $ 0  $ 0 Fixed Income Debt Securities: U.S. Government and agencies 20,052 20,052 0 0 Mortgage backed securities 7,440 7,440 0 0 Municipal obligations 1,551 1,551 0 0 Corporate bonds 8,030 8,030 0 0 Fixed Income Mutual Funds: General 34,083 34,083 0 0 Equity Securities: Common stock 23,868 23,868 0 0 Equity Mutual Funds: Domestic equity large cap 29,894 29,894 0 0 Domestic equity small cap 13,256 13,256 0 0 Alternative equity 15,376 15,376 International emerging equity 3,990 3,990 0 0 International equity developed 11,735 11,735 0 0 Total  $   173,840  $   173,840  $   0  $   0

Stock Based Compensation (Table

Stock Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2024
Summary of Stock Option Plans	A summary of activity under the United’s stock option plans as of December 31, 2024, and the changes during the year of 2024 are presented below: Year ended December 31, 2024 Weighted Average (Dollars in thousands, except per share amounts) Aggregate Remaining Exercise Shares Value Term (Yrs.) Price Outstanding at January 1, 2024 1,337,382 $ 35.47 Exercised (183,888 ) 30.18 Forfeited or expired (103,826 ) 36.54 Outstanding at December 31, 2024 1,049,668  $  3,275 3.2  $  36.29 Exercisable at December 31, 2024 1,049,668  $  3,275 3.2  $  36.29
Changes to United's Restricted Common Shares	The following summarizes the changes to United’s restricted common shares for the year ended December 31, 2024: Number of Weighted-Average Outstanding at January 1, 2024 333,932  $ 37.75 Granted 184,458   34.37 Vested (198,950 )   36.49 Forfeited (9,413 )   36.67 Outstanding at December 31, 2024 310,027  $ 36.58
Status of United's Nonvested Stock Option Awards	The following table summarizes the status of United’s nonvested awards for the year ended December 31, 2024: Shares Weighted-Average Nonvested at January 1, 2024 56,526  $ 5.65 Vested (56,526 )    5.65 Forfeited or expired 0    0.00 Nonvested at December 31, 2024 0  $ 0.00
Restricted Stock Units (RSUs) [Member]
Status of United's Nonvested Stock Option Awards	The following table summarizes the status of United’s nonvested RSUs during the year ended December 31, 2024: Shares Weighted-Average Nonvested at January 1, 2024 363,502  $  37.53 Granted 254,592     32.80 Vested (127,536 )     36.28 Forfeited or expired (439 )     34.72 Nonvested at December 31, 2024 490,119  $  35.41

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amount and Fair Value of Derivative Financial Instruments	The following tables disclose the derivative instruments’ location on the Company’s Consolidated Balance Sheets and the notional amount and fair value of those instruments at December 31, 2024 and December 31, 2023. Asset Derivatives December 31, 2024 December 31, 2023 (In thousands) Balance Sheet Location Notional Amount Fair Value Balance Sheet Location Notional Amount Fair Value Derivatives designated as hedging instruments Fair Value Hedges: Interest Other assets  $ 10,770  $ 644 Other assets  $ 12,032  $ 611 Total Fair Value Hedges  $ 10,770  $ 644  $ 12,032  $ 611 Cash Flow Hedges: Interest rate swap contracts (hedging FHLB borrowings) Other assets  $ 250,000  $ 0 Other assets  $ 500,000  $ 0 Total Cash Flow Hedges  $ 250,000  $ 0  $ 500,000  $ 0 Total derivatives designated as hedging instruments  $ 260,770  $ 644  $ 512,032  $ 611 Derivatives not designated as hedging instruments Forward loan sales commitments Other assets  $ 0  $ 0 Other assets  $ 3,880  $ 93 TBA mortgage-backed securities Other assets 54,826 278 Other assets 0 0 Interest rate lock commitments Other assets 21,553 339 Other assets 99,278 1,144 Total derivatives not designated as hedging instruments  $ 76,379  $ 617  $ 103,158  $ 1,237 Total asset derivatives  $ 337,149  $ 1,261  $ 615,190  $ 1,848 Liability Derivatives December 31, 2024 December 31, 2023 Balance Sheet Location Notional Amount Fair Value Balance Sheet Location Notional Amount Fair Value Derivatives not designated as hedging instruments TBA mortgage-backed securities Other liabilities  $ 0  $ 0 Other liabilities  $ 77,115  $ 678 Forward loan sales commitments Other liabilities 3,186 20 Other liabilities 0 0 Total derivatives not designated as hedging instruments  $ 3,186  $ 20  $ 77,115  $ 678 Total liability derivatives  $ 3,186  $ 20  $ 77,115  $ 678
Summary of Carrying Amount Hedged Assets/(Liabilities)	The following table represents the carrying amount of the hedged assets/(liabilities) and the cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged assets/(liabilities) that are designated as a fair value accounting relationship as of December 31, 2024 and December 31, 2023. December 31, 2024 (In thousands) Derivatives in Fair Value Hedging Relationships Location in the Statement of Carrying Amount of Cumulative Amount Cumulative Amount of Interest rate swaps Loans, net of unearned income  $ 10,770  $  (657)  $   0 December 31, 2023 (In thousands) Derivatives in Fair Value Hedging Relationships Location in the Statement Carrying Amount of Assets/(Liabilities) Cumulative Amount Cumulative Amount of Interest rate swaps Loans, net of unearned income  $  12,032  $  (632)  $   0
Schedule of Derivative Financial Instruments on Statement of Income	The effect of United’s derivative financial instruments on its Consolidated Statements of Income for the years ended December 31, 2024, 2023 and 2022 is presented as follows: Year Ended (In thousands) Income Statement Location December 31, December 31, December 31, Derivatives in hedging relationships Cash Flow Hedges: Interest rate swap contracts Interest on long-term (1) $ 20,932 $ 23,574 $ 5,782 Fair Value Hedges: Interest rate swap contracts Interest and fees on loans and leases $ 8 $ 117 $ (177) Total derivatives in hedging relationships $ 20,940 $ 23,691 $ 5,605 Derivatives not designated as hedging instruments Forward loan sales commitments Income from Mortgage Banking Activities (114 ) (127 ) (174 ) TBA mortgage-backed securities Income from Mortgage Banking Activities 956 (611 ) 276 Interest rate lock commitments Income from Mortgage Banking Activities (489 ) (240 ) (8,373 ) Total derivatives not designated as hedging instruments $ 353 $ (978 ) $ (8,271 ) Total derivatives $ 21,293 $ 22,713 $ (2,666 ) (1) Decreases or increases in interest expense are expressed as positive or negative amounts, respectively, based on their impact to net income.

Comprehensive Income (Tables)

Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Components of Total Comprehensive Income	The changes in accumulated other comprehensive income are as follows: For the Years Ended December 31 (In thousands) 2024 2023 2022 Net Income  $   372,996  $   366,313  $ 379,627 Available for sale (“AFS”) securities: Change in net unrealized gains (losses) on AFS securities arising during the period 24,251 98,627 (481,007 ) Related income tax effect (5,840 ) (22,980 ) 112,075 Net reclassification adjustment for losses (gains) included in net income 16,296 7,659 (2 ) Related income tax effect (3,852 ) (1,785 ) 0 30,855 81,521 (368,934 ) Net effect of AFS securities on other comprehensive income 30,855 81,521 (368,934 ) Cash flow hedge derivatives: Unrealized gain on cash flow hedge before reclassification to interest expense 12,744 6,548 53,572 Related income tax effect (2,987 ) (1,526 ) (12,482 ) Net reclassification adjustment for gains included in net income (20,932 ) (23,574 ) (5,782 ) Related income tax effect 4,926 5,493 1,347 Net effect of cash flow hedge derivatives on other comprehensive income (6,249 ) (13,059 ) 36,655 Defined benefit pension plan: Net actuarial gain during the period 12,348 2,635 2,195 Related income tax expense (2,951 ) (613 ) (512 ) Amortization of net actuarial loss recognized in net income 2,315 3,347 3,645 Related income tax effect (540 ) (780 ) (893 ) Net effect of change in defined benefit pension plan on other comprehensive income 11,172 4,589 4,435 Total change in other comprehensive income, net of tax 35,778 73,051 (327,844 ) Total Comprehensive Income  $     408,774  $   439,364  $   51,783
Components of Accumulated Other Comprehensive Income	The components of accumulated other comprehensive income for the year ended December 31, 2024 are as follows: Changes in Accumulated Other Comprehensive Income (AOCI) by Component (a) For the Year Ended December 31, 2024 (Dollars in thousands) Unrealized Unrealized Defined Items Total Balance at January 1, 2024 $ (278,819) $ 39,955 $ (20,817) $ (259,681) Other comprehensive income before reclassification 18,411 9,757 0 28,168 Amounts reclassified from accumulated other comprehensive income 12,444 (16,006 ) 11,172 7,610 Net current-period other comprehensive income (loss), net of tax 30,855 (6,249 ) 11,172 35,778 Balance at December 31, 2024 $ (247,964) $ 33,706 $ (9,645) $ (223,903) (a) All amounts are net-of-tax.
Reclassifications Out of Accumulated Other Comprehensive Income	Reclassifications out of Accumulated Other Comprehensive Income (AOCI) For the Year Ended December 31, 2024 (In thousands) Details about AOCI Components Amount Reclassified from AOCI Affected Line Item in the Statement Where Net Income is Presented Available for sale (“AFS”) securities: Net reclassification adjustment for losses included in net income $ 16,296 Net investment securities losses 16,296 Total before tax Related income tax effect (3,852 ) Tax expense 12,444 Net of tax Cash flow hedge: Net reclassification adjustment for gains included in net income $ (20,932 ) Interest expense (20,932 ) Total before tax Related income tax effect 4,926 Tax expense (16,006 ) Net of tax Pension plan: Recognized net actuarial gain 12,348  (a) Amortization of net actuarial loss 2,315  (b) 14,663 Total before tax Related income tax effect (3,491 ) Tax expense 11,172 Net of tax Total reclassifications for the period $ 7,610 (a)   This AOCI component is included in the computation of changes in plan assets (see Note P, Employee Benefit Plans) (b)   This AOCI component is included in the computation of net periodic pension cost (see Note P, Employee Benefit Plans)

United Bankshares, Inc. (Pare_2

United Bankshares, Inc. (Parent Company Only) Financial Information (Tables)	12 Months Ended
	Dec. 31, 2024
Condensed Financial Information Disclosure [Abstract]
Condensed Balance Sheets	Condensed Balance Sheets December 31 (In thousands) 2024 2023 Assets Cash and due from banks $ 249,515 $ 238,256 Securities available for sale 5,663 5,846 Securities held to maturity 20 20 Equity securities 15,897 3,735 Other investment securities 11,400 20,704 Investment in subsidiaries: Bank subsidiaries 5,024,692 4,818,320 Nonbank subsidiaries 55,755 54,556 Goodwill (16,715 ) (16,715 ) Other assets 32,152 28,315 Total Assets $ 5,378,379 $ 5,153,037 Liabilities and Shareholders’ Equity Junior subordinated debentures of subsidiary trusts $ 280,221 $ 278,617 Accrued expenses and other liabilities 104,935 103,180 Shareholders’ equity (including other accumulated comprehensive losses of $223,903 and $259,681 at December 31, 2024 and 2023, respectively) 4,993,223 4,771,240 Total Liabilities and Shareholders’ Equity $ 5,378,379 $ 5,153,037
Condensed Statements of Income	Condensed Statements of Income Year Ended December 31 (In thousands) 2024 2023 2022 Income Dividends from banking subsidiaries $ 231,000 $ 217,000 $ 272,500 Net interest income 933 970 446 Management fees: Bank subsidiaries 48,307 43,852 35,931 Nonbank subsidiaries 51 27 27 Other income 5,064 2,167 3,053 Total Income 285,355 264,016 311,957 Condensed Statements of Income Year Ended December 31 (In thousands) 2024 2023 2022 Expenses Operating expenses 80,922 67,968 50,242 Income Before Income Taxes and Equity in Undistributed Net Income of Subsidiaries 204,433 196,048 261,715 Applicable income tax benefit (5,589 ) (4,521 ) (2,196 ) Income Before Equity in Undistributed Net Income of Subsidiaries 210,022 200,569 263,911 Equity in undistributed net income of subsidiaries: Bank subsidiaries 169,778 170,997 117,594 Nonbank subsidiaries (6,804 ) (5,253 ) (1,878 ) Net Income $ 372,996 $ 366,313 $ 379,627
Condensed Statements of Cash Flows	Condensed Statements of Cash Flows Year Ended December 31 (In thousands) 2024 2023 2022 Operating Activities Net income $ 372,996 $ 366,313 $ 379,627 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed net income of subsidiaries (162,974 ) (165,744 ) (115,716 ) Amortization of net periodic pension costs 141 204 220 Stock-based compensation 12,130 12,463 9,881 Excess tax benefits from stock-based compensation arrangements 258 128 1,040 Net change in other assets and liabilities (5,925 ) (5,420 ) (6,118 ) Net Cash Provided by Operating Activities 216,626 207,944 268,934 Investing Activities Net proceeds from sales (purchases) of debt securities 183 338 (426 ) Net proceeds from sales (purchases) of equity securities 130 (1,303 ) 4,186 Increase in investment in subsidiaries (8,000 ) (16,000 ) (13,000 ) Change in other investment securities (1,187 ) (1,525 ) (6,144 ) Net Cash Used in Investing Activities (8,874 ) (18,490 ) (15,384 ) Financing Activities Repayment of subordinated notes 0 (10,250 ) 0 Cash dividends paid (200,727 ) (194,727 ) (193,041 ) Acquisition of treasury stock (1,040 ) (1,382 ) (79,460 ) Proceeds from exercise of stock options 5,274 1,750 10,295 Net Cash Used in Financing Activities (196,493 ) (204,609 ) (262,206 ) Increase (Decrease) in Cash and Cash Equivalents 11,259 (15,155 ) (8,656 ) Cash and Cash Equivalents at Beginning of Year 238,256 253,411 262,067 Cash and Cash Equivalents at End of Year $ 249,515 $ 238,256 $ 253,411

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2024
Deposits [Abstract]
Capital Amounts and Ratios	United’s and United Bank’s capital amounts (in thousands of dollars) and ratios are presented in the following table. (Dollars in thousands) Actual For Capital Adequacy Purposes To Be Well- Capitalized  Amount   Ratio   Amount   Ratio   Amount   Ratio  As of December 31, 2024: Total Capital (to Risk- Weighted Assets): United Bankshares $ 3,897,755 16.5 % $ 1,887,433 ≥ 8.0 % $ 2,359,292 ≥ 10.0 % United Bank 3,620,657 15.4 % 1,877,704 ≥ 8.0 % 2,347,131 ≥ 10.0 % Tier I Capital (to Risk- Weighted Assets): United Bankshares $ 3,335,667 14.1 % $ 1,415,575 ≥ 6.0 % $ 1,887,433 ≥ 8.0 % United Bank 3,348,071 14.3 % 1,408,278 ≥ 6.0 % 1,877,704 ≥ 8.0 % Common Tier I Capital (to Risk Weighted Assets): United Bankshares $ 3,335,667 14.1 % $ 1,061,681 ≥ 4.5 % $ 1,533,540 ≥ 6.5 % United Bank 3,348,071 14.3 % 1,056,209 ≥ 4.5 % 1,525,635 ≥ 6.5 % Tier I Capital (to Average Assets): United Bankshares $ 3,335,667 11.7 % $ 1,136,661 ≥ 4.0 % $ 1,420,827 ≥ 5.0 % United Bank 3,348,071 11.8 % 1,132,023 ≥ 4.0 % 1,415,029 ≥ 5.0 % As of December 31, 2023: Total Capital (to Risk- Weighted Assets): United Bankshares $ 3,700,453 15.4 % $ 1,924,541 ≥ 8.0 % $ 2,405,676 ≥ 10.0 % United Bank 3,440,096 14.4 % 1,916,834 ≥ 8.0 % 2,396,043 ≥ 10.0 % Tier I Capital (to Risk- Weighted Assets): United Bankshares $ 3,162,118 13.1 % $ 1,443,405 ≥ 6.0 % $ 1,924,541 ≥ 8.0 % United Bank 3,190,950 13.3 % 1,437,626 ≥ 6.0 % 1,916,834 ≥ 8.0 % (Dollars in thousands) Actual For Capital Adequacy Purposes To Be Well- Capitalized  Amount   Ratio   Amount   Ratio   Amount   Ratio  Common Tier I Capital (to Risk Weighted Assets): United Bankshares $ 3,162,118 13.1 % $ 1,082,554 ≥ 4.5 % $ 1,563,689 ≥ 6.5 % United Bank 3,190,950 13.3 % 1,078,219 ≥ 4.5 % 1,557,428 ≥ 6.5 % Tier I Capital (to Average Assets): United Bankshares $ 3,162,118 11.4 % $ 1,110,296 ≥ 4.0 % $ 1,387,870 ≥ 5.0 % United Bank 3,190,950 11.5 % 1,108,321 ≥ 4.0 % 1,385,401 ≥ 5.0 %

Fair Values of Financial Instru

Fair Values of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value	The following table presents the balances of financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2024 and 2023, segregated by the level of the valuation inputs within the fair value hierarchy: Fair Value at December 31, 2024 Using (In thousands) Description Balance as of December 31, 2024 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Available for sale debt securities: U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 245,842 $ 0 $ 245,842 $ 0 State and political subdivisions 495,073 0 495,073 0 Residential mortgage-backed securities Agency 1,059,719 0 1,059,719 0 Non-agency 82,123 0 82,123 0 Commercial mortgage-backed securities Agency 329,986 0 329,986 0 Asset-backed securities 474,982 0 474,982 0 Single issue trust preferred securities 11,919 0 11,919 0 Fair Value at December 31, 2024 Using (In thousands) Description Balance as of December 31, 2024 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Other corporate securities 260,075 4,965 255,110 0 Total available for sale securities 2,959,719 4,965 2,954,754 0 Equity securities: Financial services industry 12.504 12,504 0 0 Equity mutual funds (1) 3,394 3,394 0 0 Fixed income mutual funds 5,160 5,160 0 0 Total equity securities 21,058 21,058 0 0 Loans held for sale 44,360 0 0 44,360 Derivative financial assets: Interest rate swap contracts 644 0 644 0 TBA mortgage-backed securities 278 0 0 278 Interest rate lock commitments 339 0 0 339 Total derivative financial assets 1,261 0 644 617 Liabilities Derivative financial liabilities: Forward sales commitments 20 0 0 20 Total derivative financial liabilities 20 0 0 20 Fair Value at December 31, 2023 Using (In thousands) Description Balance as of December 31, 2023 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Available for sale debt securities: U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 484,950 $ 0 $ 484,950 $ 0 State and political subdivisions 533,831 0 533,831 0 Residential mortgage-backed securities Agency 1,049,941 0 1,049,941 0 Non-agency 90,611 0 90,611 0 Commercial mortgage-backed securities Agency 459,298 0 459,298 0 Asset-backed securities 860,638 0 860,638 0 Single issue trust preferred securities 15,141 0 15,141 0 Other corporate securities 291,967 5,159 286,808 0 Total available for sale securities 3,786,377 5,159 3,781,218 0 Equity securities: Financial services industry 211 211 0 0 Equity mutual funds (1) 3,524 3,524 0 0 Fixed income mutual funds 5,210 5,210 0 0 Total equity securities 8,945 8,945 0 0 Loans held for sale 56,261 0 4,283 51,978 Derivative financial assets: Interest rate swap contracts 611 0 611 0 Forward sales commitments 93 0 60 33 Interest rate lock commitments 1,144 0 139 1,005 Total derivative financial assets 1,848 0 810 1,038 Liabilities Derivative financial liabilities TBA mortgage-backed securities 678 0 11 667 Total derivative financial liabilities 678 0 11 667 (1) The equity mutual funds are within a rabbi trust for the payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries.
Schedule of Additional Information about Financial Assets and Liabilities Measured at Fair Value Utilized Level 3	The following tables present additional information about financial assets and liabilities measured at fair value at December 31, 2024 and 2023 on a recurring basis and for which United has utilized Level 3 inputs to determine fair value. The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses related to assets still held at the reporting date are recorded in Income from mortgage banking activities in the Consolidated Statements of Income. Derivative Assets Derivative Liabilities December31, 2024 Loans Held for TBA Forward Sales Interest Rate TBA Forward Balance, beginning of period  $ 51,978  $ 0  $ 33  $ 1,005  $ 667  $ 0 Originations 607,383 0 0 0 0 0 Sales (630,244 ) 0 0 0 0 0 Transfers other 0 278 (33 ) (666 ) (667 ) 20 Total gains during the period recognized in earnings 15,243 0 0 0 0 0 Balance, end of period  $ 44,360 $ 278  $ 0  $ 339  $ 0  $ 20 The amount of total (losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date  $ (1,133 )  $ 278 0  $ 339  $ 0  $20 Derivative Assets Derivative Liabilities December 31, 2023 Loans Held for Sale TBA Forward Sales Interest Rate TBA Interest Rate Balance, beginning of period  $ 44,871  $ 26  $ 6  $ 844  $ 213  $ 348 Originations 1,156,616 0 0 0 0 0 Sales (1,179,612 ) 0 0 0 0 0 Transfers other 0 (26 ) 27 161 454 (348 ) Total gains during the period recognized in earnings 30,103 0 0 0 0 0 Balance, end of period  $ 51,978  $ 0  $ 33  $ 1,005  $ 667  $ 0 The amount of total gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date  $ 1,142  $ 0  $ 33  $ 1,005  $ 667  $ 0
Schedule of Changes in Fair Value Included in Earnings of Financial Instruments for which Fair Value Option has been Elected	The following table reflects the change in fair value included in earnings of financial instruments for which the fair value option has been elected: (In thousands) Description Year Ended December 31, 2024 Year Ended December 31, 2023 Income from mortgage banking activities $ (1,222) $ 1,175
Summary of Difference Between Aggregate Fair Value and Remaining Contractual Principal Outstanding for Financial Instruments for which Fair Value Option has been Elected	The following table reflects the difference between the aggregate fair value and the remaining contractual principal outstanding for financial instruments for which the fair value option has been elected: December 31, 2024 December 31, 2023 (In thousands) Description Unpaid Fair Value Fair Value Unpaid Fair Value Fair Value Loans held for sale  $  43,698  $  44,360  $  662  $  54,377  $  56,261  $  1,884
Summary of Financial Assets Measured at Fair Value on Nonrecurring Basis	The following table summarizes United’s financial assets that were measured at fair value on a nonrecurring basis during the period: (In thousands) Description Fair Value at December 31, 2024 Balance as of December 31,  Quoted Prices  in Active Markets for Identical Assets (Level 1) Significant Other  Observable  Inputs (Level 2) Significant  Unobservable  Inputs (Level 3) YTD Assets Individually assessed loans $ 40,701 $ 0 $ 21,725 $ 18,976 $ (231 ) OREO 327 0 240 87 0 (In thousands) Description Fair Value at December 31, 2023 Balance as of December 31,  Quoted Prices  in Active Markets for Identical Assets (Level 1) Significant Other  Observable  Inputs (Level 2) Significant  Unobservable  Inputs (Level 3) YTD  (Losses)  Assets Individually assessed loans $ 45,308 $ 0 $ 44,722 $ 586 $ 314 OREO 2,615 0 2,615 0 (67 )
Summary of Estimated Fair Values of Financial Instruments	The estimated fair values of United’s financial instruments are summarized below: Fair Value at Measurement (In thousands)  Carrying    Fair Value    Quoted Prices  in Active Markets for Identical Assets (Level 1) Significant Other  Observable  Inputs (Level 2) Significant  Unobservable  Inputs (Level 3) December 31, 2024 Cash and cash equivalents $ 2,292,244 $ 2,292,244 $ 0 $ 2,292,244 $ 0 Securities available for sale 2,959,719 2,959,719 4,965 2,954,754 0 Securities held to maturity 1,002 1,020 0 0 1,020 Equity securities 21,058 21,058 21,058 0 0 Other securities 277,517 263,641 0 0 263,641 Loans held for sale 44,360 44,360 0 0 44,360 Net loans 21,401,649 20,868,239 0 0 20,868,239 Derivative financial assets, 1,261 1,261 0 644 617 Mortgage servicing rights 0 0 0 0 0 Deposits 23,961,859 23,922,063 0 23,922,063 0 Short-term borrowings 176,090 176,090 0 176,090 0 Long-term borrowings 540,420 505,305 0 505,305 0 Derivative financial liabilities 20 20 0 0 20 December 31, 2023 Cash and cash equivalents $ 1,598,943 $ 1,598,943 $ 0 $ 1,598,943 $ 0 Securities available for sale 3,786,377 3,786,377 5,159 3,781,218 0 Securities held to maturity 1,003 1,020 0 0 1,020 Equity securities 8,945 8,945 8,945 0 0 Other securities 329,429 312,958 0 0 312,958 Loans held for sale 56,261 56,261 0 4,283 51,978 Net loans 21,099,847 20,463,710 0 0 20,463,710 Derivative financial assets, 1,848 1,848 0 810 1,038 Mortgage servicing rights 4,554 13,427 0 0 13,427 Deposits 22,819,319 22,760,310 0 22,760,310 0 Short-term borrowings 196,095 196,095 0 196,095 0 Long-term borrowings 1,789,103 1,769,123 0 1,769,123 0 Derivative financial liabilities 678 678 0 11 667

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Summary of Community Banking Segment Information	Information about the community banking segment for the years ended December 31, 2024, 2023 and 2022 is as follows: For the Year Ended December 31 (In thousands) 2024 2023 2022 Total Assets $ 30,023,545 $ 29,926,482 $ 29,489,380 Net interest income $ 911,068 $ 919,924 $ 896,431 Provision for credit losses 25,153 31,153 18,822 Other income 123,695 135,258 153,261 Other expense Employee compensation 234,618 230,809 242,408 Employee benefits 53,621 48,368 45,944 Net occupancy expense 46,084 46,426 45,129 OREO expense 576 1,355 2,138 Net (gains) losses on the sales of OREO properties (75 ) (60 ) 700 Equipment expense 29,686 29,731 29,320 Data processing expense 29,646 29,395 29,997 Mortgage loan servicing expense and impairment 2,694 5,596 7,099 Bankcard processing expense 2,490 2,192 1,938 FDIC insurance expense 19,735 30,376 11,988 Other segment expense (a) 125,956 136,036 138,426 Total other expense 545,031 560,224 555,087 Income before income taxes 464,579 463,805 475,783 Income taxes 91,583 97,492 96,156 Segment net income 372,996 366,313 379,627 Reconciliation of profit or loss Adjustments and reconciling items 0 0 0 Consolidated net income $ 372,996 $ 366,313 $ 379,627 (a) Other segment expense includes legal, consulting and other professional services expense, franchise and other taxes not on income, expense for reserve on lending-related commitments, ATM expenses, marketing expense, core deposits amortization, and other general operating expenses.

Quarterly Financial Data (Tabl

Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2024
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data	Quarterly financial data for 2024 and 2023 is summarized below: (Dollars in thousands, except per share data) 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter 2024 Interest income $ 369,180 $ 374,184 $ 382,723 $ 376,034 Interest expense 146,691 148,469 152,467 143,426 Net interest income 222,489 225,715 230,256 232,608 Provision for credit losses 5,740 5,779 6,943 6,691 Mortgage banking income 5,298 3,901 4,544 2,314 Securities (losses) gains, net (99 ) (218 ) (6,715 ) (688 ) Other noninterest income 27,013 26,540 34,113 27,692 Noninterest expense 140,742 134,774 135,339 134,176 Income taxes 21,405 18,878 24,649 26,651 Net income (1) 86,814 96,507 95,267 94,408 Per share data: Average shares outstanding (000s): Basic 134,809 135,138 135,158 135,236 Diluted 135,121 135,315 135,505 135,732 Net income per share: Basic $ 0.64 $ 0.71 $ 0.70 $ 0.70 Diluted $ 0.64 $ 0.71 $ 0.70 $ 0.69 Dividends per share $ 0.37 $ 0.37 $ 0.37 $ 0.37 2023 Interest income $ 329,303 $ 345,932 $ 356,910 $ 369,175 Interest expense 94,983 118,471 128,457 139,485 Net interest income 234,320 227,461 228,453 229,690 Provision for credit losses 6,890 11,440 5,948 6,875 Mortgage banking income 6,384 7,907 7,556 4,746 Securities (losses) gains, net (405 ) (7,336 ) (181 ) 276 Other noninterest income 26,765 34,607 26,286 28,653 Noninterest expense 137,419 135,288 135,230 152,287 Income taxes 24,448 23,452 24,779 24,813 Net income (1) 98,307 92,459 96,157 79,390 Per share data: Average shares outstanding (000s): Basic 134,411 134,683 134,685 134,691 Diluted 134,840 134,850 134,888 134,985 Net income per share: Basic $ 0.73 $ 0.68 $ 0.71 $ 0.59 Diluted $ 0.73 $ 0.68 $ 0.71 $ 0.59 Dividends per share $ 0.36 $ 0.36 $ 0.36 $ 0.37 (1) For further information, see the related discussion “Quarterly Results” included in Management’s Discussion and Analysis.

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Reconciliation of Numerator and Denominator of Basic Earnings Per Share with that of Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share [Abstract]
Distributed earnings allocated to common stock									$ 200,156	$ 195,167	$ 194,052
Undistributed earnings allocated to common stock									172,006	170,267	184,572
Net earnings allocated to common shareholders									$ 372,162	$ 365,434	$ 378,624
Average common shares outstanding	135,236,000	135,158,000	135,138,000	134,809,000	134,691	134,685	134,683	134,411	134,947,592	134,505,058	134,776,241
Dilutive effect of stock compensation									277,825	248,762	341,271
Average diluted shares outstanding	135,732,000	135,505,000	135,315,000	135,121,000	134,985	134,888	134,850	134,840	135,225,417	134,753,820	135,117,512
Earnings per basic common share	$ 0.7	$ 0.7	$ 0.71	$ 0.64	$ 0.59	$ 0.71	$ 0.68	$ 0.73	$ 2.76	$ 2.72	$ 2.81
Earnings per diluted common share	$ 0.69	$ 0.7	$ 0.71	$ 0.64	$ 0.59	$ 0.71	$ 0.68	$ 0.73	$ 2.75	$ 2.71	$ 2.8

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2024 USD ($) Region shares	Dec. 31, 2023 USD ($) shares	Dec. 31, 2022 USD ($) shares
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number Of Metropolitan Statistical Areas | Region	5
Loan fees net of costs amortized and included in interest income	$ 36,937,000	$ 39,509,000	$ 57,424,000
Minimum days, related to accrual of interest on discontinued commercial and consumer loans	90 days
Maximum days, related to accrual of interest on discontinued commercial and consumer loans	120 days
Real estate acquired in foreclosure or other settlement of loans	$ 327,000,000	2,615,000,000
Recorded investment of consumer mortgage loans	795,000,000	142,000,000
Advertising Expense	8,336,000	9,330,000	8,160,000
Amortization expense on intangible assets	3,639,000	5,116,000	5,516,000
Total goodwill	1,888,889,000	1,888,889,000
Stock based compensation expense	$ 12,130,000	$ 12,463,000	$ 9,881,000
Antidilutive stock options and restricted stock outstanding shares | shares	590,395	1,410,389	656,432
Allowances for credit losses on securities held to maturity	$ 18,000	$ 17,000
Allowance for credit losses on securities held for sale	0	0
Restricted Stock Units (RSUs) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stock based compensation expense	$ 12,463,000	$ 9,881,000	$ 12,130,000
Minimum [Member] | Core Deposit Intangible Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Intangible assets amortization period	1 year
Maximum [Member] | Core Deposit Intangible Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Intangible assets amortization period	10 years
Furniture, Fixtures and Equipment [Member] | Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Bank premises and equipment, useful life	3 years
Furniture, Fixtures and Equipment [Member] | Maximum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Bank premises and equipment, useful life	15 years
Buildings and Improvements [Member] | Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Bank premises and equipment, useful life	5 years
Buildings and Improvements [Member] | Maximum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Bank premises and equipment, useful life	40 years

Mergers and Acquisitions - Addi

Mergers and Acquisitions - Additional Information (Detail)			12 Months Ended
	Sep. 05, 2024 Offices	May 09, 2024 $ / shares	Dec. 31, 2024 USD ($) $ / shares	Jan. 10, 2025 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($) $ / shares	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Business Acquisition [Line Items]
Par value of Share | $ / shares			$ 2.5			$ 2.5
Assets			$ 30,023,545,000			$ 29,926,482,000
Deposits			23,961,859,000			22,819,319,000
Liabilities			25,030,322,000			25,155,242,000
Stockholders equity			4,993,223,000			$ 4,771,240,000	$ 4,516,193,000	$ 4,718,628,000
Bank Merger [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs			$ 2,870,000
Piedmont Bancorp [Member] | Merger Agreement [Member]
Business Acquisition [Line Items]
Par value of Share | $ / shares		$ 0.025
Assets				$ 2,400,000,000
Deposits				2,100,000,000
Liabilities				2,200,000,000
Stockholders equity stock split conversion ratio		0.003
Stockholders equity					$ 202,000,000
Number of trading days for determining the exercise price of options and warrants two days prior to the effective date	10 days
Number of Businesses Acquired | Offices	16
Loans and leases receivable covered and not covered net value				$ 2,100,000,000

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost and Estimated Fair Values of Available for Sale Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Amortized Cost	$ 3,282,690	$ 4,149,895
Gross Unrealized Gains	966	79
Gross Unrealized Losses	323,937	363,597
Allowance For Credit Losses	0	0
Estimated Fair Value	2,959,719	3,786,377
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	248,867	492,638
Gross Unrealized Gains	59	4
Gross Unrealized Losses	3,084	7,692
Allowance For Credit Losses	0	0
Estimated Fair Value	245,842	484,950
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Amortized Cost	574,580	613,588
Gross Unrealized Gains	8	11
Gross Unrealized Losses	79,515	79,768
Allowance For Credit Losses	0	0
Estimated Fair Value	495,073	533,831
Residential Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Amortized Cost	1,226,400	1,217,744
Gross Unrealized Gains	433	7
Gross Unrealized Losses	167,114	167,810
Allowance For Credit Losses	0	0
Estimated Fair Value	1,059,719	1,049,941
Residential Mortgage-Backed Securities, Non-agency [Member]
Schedule of Investments [Line Items]
Amortized Cost	88,392	100,364
Gross Unrealized Gains	262	0
Gross Unrealized Losses	6,531	9,753
Allowance For Credit Losses	0	0
Estimated Fair Value	82,123	90,611
Commercial Mortgage-Backed Securities Agency [Member]
Schedule of Investments [Line Items]
Amortized Cost	372,646	511,560
Gross Unrealized Gains	38	13
Gross Unrealized Losses	42,698	52,275
Allowance For Credit Losses	0	0
Estimated Fair Value	329,986	459,298
Asset-backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	476,863	872,048
Gross Unrealized Gains	166	44
Gross Unrealized Losses	2,047	11,454
Allowance For Credit Losses	0	0
Estimated Fair Value	474,982	860,638
Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	13,296	16,380
Gross Unrealized Gains	0	0
Gross Unrealized Losses	1,377	1,239
Allowance For Credit Losses	0	0
Estimated Fair Value	11,919	15,141
Other Corporate Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	281,646	325,573
Gross Unrealized Gains	0	0
Gross Unrealized Losses	21,571	33,606
Allowance For Credit Losses	0	0
Estimated Fair Value	$ 260,075	$ 291,967

Investment Securities - Summa_2

Investment Securities - Summary of Securities Available for Sale in an Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	$ 219,109	$ 44,182
Less than 12 months, Unrealized Losses	1,759	754
12 months or longer, Fair Value	2,238,628	3,688,251
12 months or longer, Unrealized Losses	322,178	362,843
Total, Fair Value	2,457,737	3,732,433
Total, Unrealized Losses	323,937	363,597
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	1,476	4,625
Less than 12 months, Unrealized Losses	3	11
12 months or longer, Fair Value	42,886	477,615
12 months or longer, Unrealized Losses	3,081	7,681
Total, Fair Value	44,362	482,240
Total, Unrealized Losses	3,084	7,692
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	3,314	2,050
Less than 12 months, Unrealized Losses	22	193
12 months or longer, Fair Value	479,681	517,186
12 months or longer, Unrealized Losses	79,493	79,575
Total, Fair Value	482,995	519,236
Total, Unrealized Losses	79,515	79,768
Residential Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	128,655	9,755
Less than 12 months, Unrealized Losses	1,660	51
12 months or longer, Fair Value	856,448	1,038,632
12 months or longer, Unrealized Losses	165,454	167,759
Total, Fair Value	985,103	1,048,387
Total, Unrealized Losses	167,114	167,810
Residential Mortgage-Backed Securities, Non-agency [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	0	8,964
Less than 12 months, Unrealized Losses	0	101
12 months or longer, Fair Value	59,668	81,647
12 months or longer, Unrealized Losses	6,531	9,652
Total, Fair Value	59,668	90,611
Total, Unrealized Losses	6,531	9,753
Commercial Mortgage-Backed Securities Agency [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	0	0
Less than 12 months, Unrealized Losses	0	0
12 months or longer, Fair Value	319,506	456,866
12 months or longer, Unrealized Losses	42,698	52,275
Total, Fair Value	319,506	456,866
Total, Unrealized Losses	42,698	52,275
Asset-backed Securities [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	83,188	15,866
Less than 12 months, Unrealized Losses	50	216
12 months or longer, Fair Value	215,886	829,778
12 months or longer, Unrealized Losses	1,997	11,238
Total, Fair Value	299,074	845,644
Total, Unrealized Losses	2,047	11,454
Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	0	2,922
Less than 12 months, Unrealized Losses	0	182
12 months or longer, Fair Value	11,919	12,219
12 months or longer, Unrealized Losses	1,377	1,057
Total, Fair Value	11,919	15,141
Total, Unrealized Losses	1,377	1,239
Other Corporate Securities [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	2,476	0
Less than 12 months, Unrealized Losses	24	0
12 months or longer, Fair Value	252,634	274,308
12 months or longer, Unrealized Losses	21,547	33,606
Total, Fair Value	255,110	274,308
Total, Unrealized Losses	$ 21,571	$ 33,606

Investment Securities - Summa_3

Investment Securities - Summary of Gains or Losses on Proceeds from Maturities, Sales and Calls of Available for Sale Securities by Specific Identification Method (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Proceeds from maturities, sales and calls	$ 2,914,095	$ 952,213	$ 575,748
Gross realized gains	0	0	2
Gross realized losses	$ 16,296	$ 7,659	$ 0

Investment Securities - Additio

Investment Securities - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2024 USD ($) Contract	Dec. 31, 2023 USD ($)
Schedule of Investments [Line Items]
Accrued interest receivable	$ 14,776,000	$ 20,878,000
Gross unrealized losses on available for sale securities	$ 323,937,000	363,597,000
Available for sale securities in unrealized loss position | Contract	958
Available for sale securities in portfolio, number | Contract	1,029
Capitalization of banks, equal to or greater than, in the single-issue trust preferred portfolio	$ 10,000,000,000
Equity securities at estimated fair value	21,058,000	8,945,000
Carrying value of securities pledged	2,038,864,000	2,307,591,000
Held-to-maturity securities amortized cost	1,002,000	1,003,000
Held-to-maturity securities estimated fair value	$ 1,020,000	1,020,000
Fitch, AAA Rating [Member]
Schedule of Investments [Line Items]
Percentage of asset backed securities with credit rating	66%
Federal Family Education Loan Program [Member] | Fitch, AA+ Rating [Member]
Schedule of Investments [Line Items]
Percentage of asset backed securities with credit rating	34%
Minimum [Member] | Federal Family Education Loan Program [Member] | Fitch, AA+ Rating [Member]
Schedule of Investments [Line Items]
Percentage of repayment guaranteed by the government	97%
Non Agency Residential Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale single issue trust preferred securities	$ 88,392,000
Available for sale debt securities	0
Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale single issue trust preferred securities	7,481,000
Unrated Bonds Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale single issue trust preferred securities	5,815,000
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	$ 79,515,000	79,768,000
Percent of portfolio with credit support	46%
Amortized cost of available for sale single issue trust preferred securities	$ 574,580,000
Agency Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale single issue trust preferred securities	1,599,046,000
Commercial Mortgage-Backed Securities [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	42,698,000	52,275,000
Amortized cost of available for sale single issue trust preferred securities	372,646,000
Residential Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	167,114,000	167,810,000
Amortized cost of available for sale single issue trust preferred securities	1,226,400,000
Residential Mortgage-Backed Securities, Non-agency [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	6,531,000	9,753,000
Amortized cost of available for sale single issue trust preferred securities	$ 88,392,000
Residential Mortgage-Backed Securities, Non-agency [Member] | AAA [Member]
Schedule of Investments [Line Items]
Percentage of asset backed securities with credit rating	100%
Corporate Bonds [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	$ 21,571,000	33,606,000
Amortized cost of available for sale single issue trust preferred securities	$ 281,646,000
Corporate Bonds [Member] | Investment Grade [Member]
Schedule of Investments [Line Items]
Percent of corporate securities portfolio	95%
Corporate Bonds [Member] | Below Investment Grade [Member]
Schedule of Investments [Line Items]
Percent of corporate securities portfolio	2%
Corporate Bonds [Member] | Unrated Bonds Investment Grade [Member]
Schedule of Investments [Line Items]
Percent of corporate securities portfolio	3%
Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Net unrealized gains	$ 215,610,000
Held-to-maturity securities amortized cost	1,687,438,000
Held-to-maturity securities estimated fair value	1,471,828,000
Asset-backed Securities [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	2,047,000	$ 11,454,000
Amortized cost of available for sale single issue trust preferred securities	476,863,000
Asset-backed Securities [Member] | Federal Family Education Loan Program [Member] | Fitch, AA+ Rating [Member]
Schedule of Investments [Line Items]
Available for sale debt securities	$ 0

Investment Securities - Summa_4

Investment Securities - Summary of Maturities of Securities Available for Sale by Amortized Cost and Estimated Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 262,093
Due after one year through five years, Amortized Cost	405,617
Due after five years through ten years, Amortized Cost	863,601
Due after ten years, Amortized Cost	1,751,379
Amortized Cost	3,282,690	$ 4,149,895
Due in one year or less, Estimated Fair Value	261,458
Due after one year through five years, Estimated Fair Value	375,276
Due after five years through ten years, Estimated Fair Value	779,069
Due after ten years, Estimated Fair Value	1,543,916
Total available for sale securities	$ 2,959,719	$ 3,786,377

Investment Securities - Summa_5

Investment Securities - Summary of Equity Securities (Detail) - Equity Securities [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Net gains recognized during the period on equity securities sold	$ 4,602	$ 0
Unrealized gains recognized during the period on equity securities still held at period end	4,259	358
Unrealized losses recognized during the period on equity securities still held at period end	(285)	(345)
Net gains (losses) recognized during the period	$ 8,576	$ 13

Loans and Leases - Major Classe

Loans and Leases - Major Classes of Loans And Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Commercial, financial and agricultural:
Total commercial, financial & agricultural	$ 11,881,005	$ 11,889,014
Residential real estate	5,507,384	5,271,236
Construction & land development	3,509,034	3,148,245
Consumer:
Bankcard	9,998	9,962
Other consumer	773,077	1,054,728
Less: Unearned income	(7,005)	(14,101)
Loans and leases, net of unearned income	21,673,493	21,359,084
Owner-Occupied Commercial Real Estate [Member]
Commercial, financial and agricultural:
Total commercial, financial & agricultural	1,590,002	1,598,231
Nonowner-Occupied Commercial Real Estate [Member]
Commercial, financial and agricultural:
Total commercial, financial & agricultural	6,939,641	6,718,343
Other Commercial Loans And Leases [Member]
Commercial, financial and agricultural:
Total commercial, financial & agricultural	$ 3,351,362	$ 3,572,440

Loans and Leases - Additional I

Loans and Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Loans held for sale	$ 44,360	$ 56,261
unamortized loan fees	26,322,000	35,586,000
Loans-in-process	5,569,000	6,370,000
Overdrafts from deposit accounts	4,919,000	7,146,000
Related party loans	22,702,000	$ 68,460,000
Directors and Officers [Member]
Additional amount of loan	1,014,000
Repayment of Loan	$ 46,772,000

Credit Quality - Additional Inf

Credit Quality - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)
Minimum days for discontinue of accrual interest on commercial and consumer loan	90 days
Maximum days for discontinue of accrual interest on commercial and consumer loan	120 days
Minimum number of days required for special mention	30 days
Maximum number of days required for special mention	89 days
Number of days required for substandard	90 days
Description of Credit Risk Exposure	For United’s loans with a corporate credit exposure, United analyzes loans individually to classify the loans as to credit risk. Review and analysis of criticized (special mention-rated loans in the amount of $1,000,000 or greater) and classified (substandard-rated and worse in the amount of $500,000 and greater) loans is completed once per quarter. Review of notes with committed exposure of $3,000,000 or greater is completed at least annually.
Modification Additional Funds Recorded Investment	$ 1,199,000

Credit Quality - Schedule of Ag

Credit Quality - Schedule of Age Analysis of its Past Due Loans, Segregated by Class of Loans and Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Loans, Past Due	$ 21,680,498	$ 21,373,185
Total Financing Receivables	21,680,498	21,373,185
Loans, Recorded Investment >90 Days & Accruing	16,940	14,579
30-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	83,942	83,950
90 Days or more Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	73,400	45,498
Total Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	157,342	129,448
Current & Other [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	21,523,156	21,243,737
Construction & Land Development [Member]
Financing Receivable, Past Due [Line Items]
Total Financing Receivables	3,509,034	3,148,245
Loans, Recorded Investment >90 Days & Accruing	1,677	0
Construction & Land Development [Member] | 30-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	390	879
Construction & Land Development [Member] | 90 Days or more Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	4,265	6,423
Construction & Land Development [Member] | Total Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	4,655	7,302
Construction & Land Development [Member] | Current & Other [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	3,504,379	3,140,943
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Past Due [Line Items]
Total Financing Receivables	1,590,002	1,598,231
Loans, Recorded Investment >90 Days & Accruing	0	110
Commercial Real Estate [Member] | Owner-Occupied [Member] | 30-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	3,767	6,361
Commercial Real Estate [Member] | Owner-Occupied [Member] | 90 Days or more Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	1,284	6,335
Commercial Real Estate [Member] | Owner-Occupied [Member] | Total Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	5,051	12,696
Commercial Real Estate [Member] | Owner-Occupied [Member] | Current & Other [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	1,584,951	1,585,535
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Past Due [Line Items]
Total Financing Receivables	6,939,641	6,718,343
Loans, Recorded Investment >90 Days & Accruing	0	2,460
Commercial Real Estate [Member] | Nonowner-Occupied [Member] | 30-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	11,931	10,373
Commercial Real Estate [Member] | Nonowner-Occupied [Member] | 90 Days or more Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	23,379	13,146
Commercial Real Estate [Member] | Nonowner-Occupied [Member] | Total Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	35,310	23,519
Commercial Real Estate [Member] | Nonowner-Occupied [Member] | Current & Other [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	6,904,331	6,694,824
Other Commercial [Member]
Financing Receivable, Past Due [Line Items]
Total Financing Receivables	3,351,362	3,572,440
Loans, Recorded Investment >90 Days & Accruing	431	560
Other Commercial [Member] | 30-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	5,594	3,218
Other Commercial [Member] | 90 Days or more Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	19,019	1,224
Other Commercial [Member] | Total Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	24,613	4,442
Other Commercial [Member] | Current & Other [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	3,326,749	3,567,998
Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total Financing Receivables	5,507,384	5,271,236
Loans, Recorded Investment >90 Days & Accruing	12,429	6,244
Residential Real Estate [Member] | 30-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	33,783	26,523
Residential Real Estate [Member] | 90 Days or more Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	20,946	12,136
Residential Real Estate [Member] | Total Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	54,729	38,659
Residential Real Estate [Member] | Current & Other [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	5,452,655	5,232,577
Consumer [Member] | Bankcard [Member]
Financing Receivable, Past Due [Line Items]
Total Financing Receivables	9,998	9,962
Loans, Recorded Investment >90 Days & Accruing	61	127
Consumer [Member] | Bankcard [Member] | 30-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	63	145
Consumer [Member] | Bankcard [Member] | 90 Days or more Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	61	127
Consumer [Member] | Bankcard [Member] | Total Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	124	272
Consumer [Member] | Bankcard [Member] | Current & Other [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	9,874	9,690
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Past Due [Line Items]
Total Financing Receivables	773,077	1,054,728
Loans, Recorded Investment >90 Days & Accruing	2,342	5,078
Consumer [Member] | Other Consumer [Member] | 30-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	28,414	36,451
Consumer [Member] | Other Consumer [Member] | 90 Days or more Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	4,446	6,107
Consumer [Member] | Other Consumer [Member] | Total Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	32,860	42,558
Consumer [Member] | Other Consumer [Member] | Current & Other [Member]
Financing Receivable, Past Due [Line Items]
Loans, Past Due	$ 740,217	$ 1,012,170

Credit Quality - Schedule of No

Credit Quality - Schedule of Nonaccrual Loans, Segregated by Class of Loans and Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Nonaccruals	$ 56,460	$ 30,919
With No Related Allowance for Credit Losses	20,598	30,919
Other Commercial [Member]
Financing Receivable, Past Due [Line Items]
Nonaccruals	18,588	664
With No Related Allowance for Credit Losses	584	664
Residential Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Nonaccruals	8,517	5,892
With No Related Allowance for Credit Losses	5,562	5,892
Owner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Nonaccruals	1,284	6,225
With No Related Allowance for Credit Losses	1,284	6,225
Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Nonaccruals	23,379	10,686
With No Related Allowance for Credit Losses	8,475	10,686
Construction [Member]
Financing Receivable, Past Due [Line Items]
Nonaccruals	2,588	6,423
With No Related Allowance for Credit Losses	2,589	6,423
Bankcard [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Nonaccruals	0	0
With No Related Allowance for Credit Losses	0	0
Other Consumer [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Nonaccruals	2,104	1,029
With No Related Allowance for Credit Losses	$ 2,104	$ 1,029

Credit Quality - Schedule of Am

Credit Quality - Schedule of Amortized Cost Loans and Leases Pledged As Collateral (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	$ 75,077	$ 65,116
Commercial Real Estate [Member] | Owner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	9,589	14,507
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	33,379	26,565
Other Commercial [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	21,385	6,340
Residential Real Estate [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	7,359	9,775
Construction & Land Development [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	3,365	7,929
Consumer [Member] | Bankcard [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Consumer [Member] | Other Consumer [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Residential Real Estate [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	14,390	21,956
Residential Real Estate [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	5	27
Residential Real Estate [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	7,037	11,200
Residential Real Estate [Member] | Other Commercial [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Residential Real Estate [Member] | Residential Real Estate [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	7,348	9,775
Residential Real Estate [Member] | Construction & Land Development [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	954
Residential Real Estate [Member] | Consumer [Member] | Bankcard [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Residential Real Estate [Member] | Consumer [Member] | Other Consumer [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Business Assets [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	15,816	891
Business Assets [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Business Assets [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Business Assets [Member] | Other Commercial [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	15,816	891
Business Assets [Member] | Residential Real Estate [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Business Assets [Member] | Construction & Land Development [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Business Assets [Member] | Consumer [Member] | Bankcard [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Business Assets [Member] | Consumer [Member] | Other Consumer [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Land [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	2,492	3,661
Land [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Land [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Land [Member] | Other Commercial [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Land [Member] | Residential Real Estate [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Land [Member] | Construction & Land Development [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	2,492	3,661
Land [Member] | Consumer [Member] | Bankcard [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Land [Member] | Consumer [Member] | Other Consumer [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Commercial Real Estate [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	32,135	23,956
Commercial Real Estate [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	3,119	5,208
Commercial Real Estate [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	23,975	13,555
Commercial Real Estate [Member] | Other Commercial [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	5,041	5,193
Commercial Real Estate [Member] | Residential Real Estate [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Commercial Real Estate [Member] | Construction & Land Development [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Commercial Real Estate [Member] | Consumer [Member] | Bankcard [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Commercial Real Estate [Member] | Consumer [Member] | Other Consumer [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Other Assets [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	10,244	14,652
Other Assets [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	6,465	9,272
Other Assets [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	2,367	1,810
Other Assets [Member] | Other Commercial [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	528	256
Other Assets [Member] | Residential Real Estate [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	11	0
Other Assets [Member] | Construction & Land Development [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	873	3,314
Other Assets [Member] | Consumer [Member] | Bankcard [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Other Assets [Member] | Consumer [Member] | Other Consumer [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	$ 0	$ 0

Credit Quality - Schedule of _2

Credit Quality - Schedule of Amortized Cost Basis of Loan Modifications Made to Borrowers (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Modifications [Line Items]
Amortized Cost Basis Loan Modification Term Extension And Interest Rate Reduction	$ 2,400	$ 0
Amortized Cost Basis Loan Modification Term Extension And Permanent Delay	$ 168	$ 0
% of Total Class of Financing Receivable	0.04%	0.16%
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Interest Rate Reduction	$ 0
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Payment Delay	$ 674
% of Total Class of Financing Receivable	0%
Term Extension [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	$ 6,447	$ 32,788
Financing Receivable, Modified, Subsequent Default	0
Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	0	1,737
Financing Receivable, Modified, Subsequent Default	0
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Amortized Cost Basis Loan Modification Term Extension And Interest Rate Reduction	0	0
Amortized Cost Basis Loan Modification Term Extension And Permanent Delay	$ 0	$ 0
% of Total Class of Financing Receivable	0.03%	0.03%
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Interest Rate Reduction	$ 0
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Payment Delay	$ 0
% of Total Class of Financing Receivable	0%
Commercial Real Estate [Member] | Owner-Occupied [Member] | Term Extension [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	$ 445	$ 484
Financing Receivable, Modified, Subsequent Default	0
Commercial Real Estate [Member] | Owner-Occupied [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	0	0
Financing Receivable, Modified, Subsequent Default	0
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Amortized Cost Basis Loan Modification Term Extension And Interest Rate Reduction	0	0
Amortized Cost Basis Loan Modification Term Extension And Permanent Delay	$ 0	$ 0
% of Total Class of Financing Receivable	0.08%	0.50%
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Interest Rate Reduction	$ 0
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Payment Delay	$ 0
% of Total Class of Financing Receivable	0%
Commercial Real Estate [Member] | Nonowner-Occupied [Member] | Term Extension [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	$ 5,765	$ 31,633
Financing Receivable, Modified, Subsequent Default	0
Commercial Real Estate [Member] | Nonowner-Occupied [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	0	1,737
Financing Receivable, Modified, Subsequent Default	0
Other Commercial [Member]
Financing Receivable, Modifications [Line Items]
Amortized Cost Basis Loan Modification Term Extension And Interest Rate Reduction	2,400	0
Amortized Cost Basis Loan Modification Term Extension And Permanent Delay	$ 0	$ 0
% of Total Class of Financing Receivable	0%	0%
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Interest Rate Reduction	$ 0
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Payment Delay	$ 0
% of Total Class of Financing Receivable	0%
Other Commercial [Member] | Term Extension [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	$ 0	$ 165
Financing Receivable, Modified, Subsequent Default	0
Other Commercial [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	0	0
Financing Receivable, Modified, Subsequent Default	0
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Amortized Cost Basis Loan Modification Term Extension And Interest Rate Reduction	0	0
Amortized Cost Basis Loan Modification Term Extension And Permanent Delay	$ 168	$ 0
% of Total Class of Financing Receivable	0.06%	0.01%
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Interest Rate Reduction	$ 0
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Payment Delay	$ 0
% of Total Class of Financing Receivable	0%
Residential Real Estate [Member] | Term Extension [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	$ 185	$ 506
Financing Receivable, Modified, Subsequent Default	0
Residential Real Estate [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	0	0
Financing Receivable, Modified, Subsequent Default	0
Construction & Land Development [Member]
Financing Receivable, Modifications [Line Items]
Amortized Cost Basis Loan Modification Term Extension And Interest Rate Reduction	0	0
Amortized Cost Basis Loan Modification Term Extension And Permanent Delay	$ 0	$ 0
% of Total Class of Financing Receivable	0%	0%
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Interest Rate Reduction	$ 0
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Payment Delay	$ 674
% of Total Class of Financing Receivable	0.02%
Construction & Land Development [Member] | Term Extension [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	$ 52	$ 0
Financing Receivable, Modified, Subsequent Default	0
Construction & Land Development [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	0	0
Financing Receivable, Modified, Subsequent Default	0
Consumer [Member] | Bankcard [Member]
Financing Receivable, Modifications [Line Items]
Amortized Cost Basis Loan Modification Term Extension And Interest Rate Reduction	0	0
Amortized Cost Basis Loan Modification Term Extension And Permanent Delay	$ 0	$ 0
% of Total Class of Financing Receivable	0%	0%
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Interest Rate Reduction	$ 0
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Payment Delay	$ 0
% of Total Class of Financing Receivable	0%
Consumer [Member] | Bankcard [Member] | Term Extension [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	$ 0	$ 0
Financing Receivable, Modified, Subsequent Default	0
Consumer [Member] | Bankcard [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	0	0
Financing Receivable, Modified, Subsequent Default	0
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Amortized Cost Basis Loan Modification Term Extension And Interest Rate Reduction	0	0
Amortized Cost Basis Loan Modification Term Extension And Permanent Delay	$ 0	$ 0
% of Total Class of Financing Receivable	0%	0%
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Interest Rate Reduction	$ 0
Amortized Cost Basis of Modified Loans that Subsequently Defaulted in Term Extension Payment Delay	$ 0
% of Total Class of Financing Receivable	0%
Consumer [Member] | Other Consumer [Member] | Term Extension [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	$ 0	$ 0
Financing Receivable, Modified, Subsequent Default	0
Consumer [Member] | Other Consumer [Member] | Interest Rate Reduction [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modified	0	$ 0
Financing Receivable, Modified, Subsequent Default	$ 0

Credit Quality - Schedule of Ri

Credit Quality - Schedule of Risk Category of Loans by Class of Loans and Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
Total	$ 11,881,005	$ 11,889,014
Owner-Occupied [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	236,794
2023	132,095	132,376
2022	246,596	317,851
2021	225,152	246,909
2020	205,768	249,336
2019		112,078
Prior	504,586	509,359
Revolving loans amortized cost basis	38,890	30,193
Revolving loans converted to term loans	121	129
Total	1,590,002	1,598,231
Owner-Occupied [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	236,547
2023	132,095	132,376
2022	243,103	316,117
2021	225,152	246,635
2020	205,461	248,861
2019		109,182
Prior	467,417	465,223
Revolving loans amortized cost basis	29,900	29,619
Revolving loans converted to term loans	0	0
Total	1,539,675	1,548,013
Owner-Occupied [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		2,460
Prior	15,199	15,423
Revolving loans amortized cost basis	8,545	125
Revolving loans converted to term loans	0	0
Total	23,744	18,008
Owner-Occupied [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	247
2023	0	0
2022	3,493	1,734
2021	0	274
2020	307	475
2019		436
Prior	21,744	28,469
Revolving loans amortized cost basis	445	449
Revolving loans converted to term loans	121	129
Total	26,357	31,966
Owner-Occupied [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	226	244
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	226	244
Owner-Occupied [Member] | Current-period Charge-offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	(116)	(855)
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	(116)	(855)
Owner-Occupied [Member] | Current-period Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	15	13
2021	0	0
2020	0	0
2019		0
Prior	1,168	174
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	1,183	187
Owner-Occupied [Member] | Current-period Net (Charge- offs) Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	15	13
2021	0	0
2020	0	0
2019		0
Prior	1,052	681
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	1,067	668
Nonowner-Occupied [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	741,996
2023	485,437	455,399
2022	1,635,973	1,433,494
2021	1,380,492	1,593,716
2020	669,226	747,362
2019		742,002
Prior	1,844,378	1,486,870
Revolving loans amortized cost basis	182,061	259,394
Revolving loans converted to term loans	78	106
Total	6,939,641	6,718,343
Nonowner-Occupied [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	741,996
2023	485,437	455,399
2022	1,623,423	1,428,880
2021	1,294,232	1,587,315
2020	639,143	717,189
2019		695,492
Prior	1,584,833	1,335,526
Revolving loans amortized cost basis	160,243	228,743
Revolving loans converted to term loans	78	106
Total	6,529,385	6,448,650
Nonowner-Occupied [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	8,465	4,614
2021	82,240	2,381
2020	29,940	25,437
2019		43,017
Prior	210,912	104,997
Revolving loans amortized cost basis	0	30,651
Revolving loans converted to term loans	0	0
Total	331,557	211,097
Nonowner-Occupied [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	4,085	0
2021	4,020	4,020
2020	143	4,736
2019		3,493
Prior	48,633	46,347
Revolving loans amortized cost basis	21,818	0
Revolving loans converted to term loans	0	0
Total	78,699	58,596
Nonowner-Occupied [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	0	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	0	0
Nonowner-Occupied [Member] | Current-period Charge-offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	(751)	0
2019		0
Prior	(1,830)	(24)
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	(2,581)	(24)
Nonowner-Occupied [Member] | Current-period Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	200	1,233
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	200	1,233
Nonowner-Occupied [Member] | Current-period Net (Charge- offs) Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	(751)	0
2019		0
Prior	(1,630)	1,209
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	(2,381)	1,209
Other Commercial Loans [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	403,928
2023	506,402	594,433
2022	398,128	617,304
2021	401,780	478,305
2020	165,757	199,740
2019		189,831
Prior	549,716	461,492
Revolving loans amortized cost basis	925,651	1,031,307
Revolving loans converted to term loans	0	28
Total	3,351,362	3,572,440
Other Commercial Loans [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	403,641
2023	505,947	593,153
2022	378,072	596,258
2021	394,412	477,457
2020	164,671	197,173
2019		187,560
Prior	519,488	447,430
Revolving loans amortized cost basis	912,293	988,809
Revolving loans converted to term loans	0	13
Total	3,278,524	3,487,853
Other Commercial Loans [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	81
2023	36	221
2022	1,129	4,798
2021	339	542
2020	251	1,775
2019		1,611
Prior	18,941	2,093
Revolving loans amortized cost basis	4,652	16,901
Revolving loans converted to term loans	0	15
Total	25,429	27,956
Other Commercial Loans [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	206
2023	419	1,059
2022	18,927	16,248
2021	7,029	306
2020	835	792
2019		660
Prior	11,262	11,923
Revolving loans amortized cost basis	8,706	25,597
Revolving loans converted to term loans	0	0
Total	47,384	56,585
Other Commercial Loans [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	25	46
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	25	46
Other Commercial Loans [Member] | Current-period Charge-offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	(464)	(88)
2022	(252)	(163)
2021	(156)	(233)
2020	(148)	0
2019		(661)
Prior	(1,352)	(567)
Revolving loans amortized cost basis	(1,217)	(217)
Revolving loans converted to term loans	0	(78)
Total	(3,589)	(2,007)
Other Commercial Loans [Member] | Current-period Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	10
2023	67	0
2022	9	0
2021	45	0
2020	0	0
2019		25
Prior	1,512	1,699
Revolving loans amortized cost basis	7	5
Revolving loans converted to term loans	0	0
Total	1,650	1,729
Other Commercial Loans [Member] | Current-period Net (Charge- offs) Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	10
2023	(397)	(88)
2022	(243)	(163)
2021	(111)	(233)
2020	(148)	0
2019		(636)
Prior	160	1,132
Revolving loans amortized cost basis	(1,210)	(212)
Revolving loans converted to term loans	0	(78)
Total	(1,939)	(278)
Residential Real Estate [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	407,812
2023	820,166	783,917
2022	1,617,541	1,618,849
2021	827,903	851,146
2020	396,094	443,772
2019		263,188
Prior	986,122	881,574
Revolving loans amortized cost basis	449,196	426,133
Revolving loans converted to term loans	2,550	2,657
Total	5,507,384	5,271,236
Residential Real Estate [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	407,430
2023	820,059	783,866
2022	1,617,541	1,618,774
2021	827,395	850,760
2020	396,094	443,514
2019		262,524
Prior	971,226	863,186
Revolving loans amortized cost basis	447,363	423,302
Revolving loans converted to term loans	2,467	2,568
Total	5,489,575	5,248,494
Residential Real Estate [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	382
2023	107	0
2022	0	0
2021	0	0
2020	0	0
2019		65
Prior	2,466	3,561
Revolving loans amortized cost basis	1,326	1,710
Revolving loans converted to term loans	0	0
Total	4,281	5,336
Residential Real Estate [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	51
2022	0	75
2021	508	386
2020	0	258
2019		599
Prior	12,430	14,827
Revolving loans amortized cost basis	507	1,121
Revolving loans converted to term loans	83	89
Total	13,528	17,406
Residential Real Estate [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	0	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	0	0
Residential Real Estate [Member] | Current-period Charge-offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	(7)	0
2022	(2)	0
2021	0	0
2020	0	0
2019		(785)
Prior	(359)	0
Revolving loans amortized cost basis	(113)	0
Revolving loans converted to term loans	0	0
Total	(481)	(785)
Residential Real Estate [Member] | Current-period Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	5	8
2020	0	0
2019		688
Prior	489	1
Revolving loans amortized cost basis	1	0
Revolving loans converted to term loans	0	0
Total	495	697
Residential Real Estate [Member] | Current-period Net (Charge- offs) Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	(7)	0
2022	(2)	0
2021	5	8
2020	0	0
2019		(97)
Prior	130	1
Revolving loans amortized cost basis	(112)	0
Revolving loans converted to term loans	0	0
Total	14	(88)
Construction & Land Development [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	628,186
2023	837,662	628,047
2022	1,254,935	1,312,786
2021	445,218	829,628
2020	20,223	55,536
2019		19,448
Prior	20,508	63,410
Revolving loans amortized cost basis	302,302	239,390
Revolving loans converted to term loans	0	0
Total	3,509,034	3,148,245
Construction & Land Development [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	628,186
2023	837,662	628,047
2022	1,253,480	1,308,793
2021	426,662	827,138
2020	18,559	53,004
2019		16,062
Prior	18,542	60,920
Revolving loans amortized cost basis	302,302	239,390
Revolving loans converted to term loans	0	0
Total	3,485,393	3,133,354
Construction & Land Development [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	1,455	2,902
2021	18,356	0
2020	57	62
2019		3,386
Prior	153	258
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	20,021	6,608
Construction & Land Development [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	1,091
2021	200	2,490
2020	1,607	2,470
2019		0
Prior	1,813	2,232
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	3,620	8,283
Construction & Land Development [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	0	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	0	0
Construction & Land Development [Member] | Current-period Charge-offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	(29)	(14)
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	(29)	(14)
Construction & Land Development [Member] | Current-period Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	319	80
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	319	80
Construction & Land Development [Member] | Current-period Net (Charge- offs) Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	290	66
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	290	66
Bankcard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	0	0
Revolving loans amortized cost basis	9,998	9,962
Revolving loans converted to term loans	0	0
Total	9,998	9,962
Bankcard [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	0	0
Revolving loans amortized cost basis	9,874	9,690
Revolving loans converted to term loans	0	0
Total	9,874	9,690
Bankcard [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	0	0
Revolving loans amortized cost basis	63	145
Revolving loans converted to term loans	0	0
Total	63	145
Bankcard [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	0	0
Revolving loans amortized cost basis	61	127
Revolving loans converted to term loans	0	0
Total	61	127
Bankcard [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	0	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	0	0
Bankcard [Member] | Current-period Charge-offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	0	0
Revolving loans amortized cost basis	(431)	(263)
Revolving loans converted to term loans	0	0
Total	(431)	(263)
Bankcard [Member] | Current-period Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	0	0
Revolving loans amortized cost basis	19	28
Revolving loans converted to term loans	0	0
Total	19	28
Bankcard [Member] | Current-period Net (Charge- offs) Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	0	0
Revolving loans amortized cost basis	(412)	(235)
Revolving loans converted to term loans	0	0
Total	(412)	(235)
Other Consumer [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	140,479
2023	133,095	192,858
2022	291,957	447,336
2021	128,069	219,442
2020	52,615	107,401
2019		65,037
Prior	24,614	19,949
Revolving loans amortized cost basis	2,248	2,705
Revolving loans converted to term loans	0	0
Total	773,077	1,054,728
Other Consumer [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	139,908
2023	131,108	192,184
2022	276,041	428,295
2021	118,478	205,015
2020	49,553	102,300
2019		62,861
Prior	22,913	18,876
Revolving loans amortized cost basis	2,215	2,638
Revolving loans converted to term loans	0	0
Total	740,216	1,012,169
Other Consumer [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	495
2023	1,805	674
2022	13,462	16,031
2021	8,485	12,220
2020	2,704	4,454
2019		2,050
Prior	1,440	977
Revolving loans amortized cost basis	23	46
Revolving loans converted to term loans	0	0
Total	28,414	36,452
Other Consumer [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	76
2023	182	0
2022	2,454	3,010
2021	1,106	2,207
2020	358	647
2019		126
Prior	261	96
Revolving loans amortized cost basis	10	21
Revolving loans converted to term loans	0	0
Total	4,447	6,107
Other Consumer [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019		0
Prior	0	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	0	0
Other Consumer [Member] | Current-period Charge-offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	(28)
2023	(206)	(9)
2022	(5,724)	(3,205)
2021	(3,096)	(2,699)
2020	(869)	(933)
2019		(319)
Prior	(380)	(191)
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	(10,303)	(7,356)
Other Consumer [Member] | Current-period Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	0
2023	21	0
2022	402	219
2021	241	125
2020	125	54
2019		54
Prior	330	235
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	1,119	687
Other Consumer [Member] | Current-period Net (Charge- offs) Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2024	(28)
2023	(185)	(9)
2022	(5,322)	(2,986)
2021	(2,855)	(2,574)
2020	(744)	(879)
2019		(265)
Prior	(50)	44
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	$ (9,184)	$ (6,669)

Credit Quality - Schedule of A

Credit Quality - Schedule of Amortized Cost Basis Payment Status (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	$ 4,560	$ 34,425
Current [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	445	484
Current [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	1,366	33,370
Current [Member] | Other Commercial [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	2,400	65
Current [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	297	506
Current [Member] | Construction & Land Development [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	52	0
Current [Member] | Consumer [Member] | Bankcard [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
Current [Member] | Consumer [Member] | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
30-89 Days Past Due [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	4,455	100
30-89 Days Past Due [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
30-89 Days Past Due [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	4,399	0
30-89 Days Past Due [Member] | Other Commercial [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	100
30-89 Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	56	0
30-89 Days Past Due [Member] | Construction & Land Development [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
30-89 Days Past Due [Member] | Consumer [Member] | Bankcard [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
30-89 Days Past Due [Member] | Consumer [Member] | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
90+ Days Past Due [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
90+ Days Past Due [Member] | Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
90+ Days Past Due [Member] | Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
90+ Days Past Due [Member] | Other Commercial [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
90+ Days Past Due [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
90+ Days Past Due [Member] | Construction & Land Development [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
90+ Days Past Due [Member] | Consumer [Member] | Bankcard [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	0	0
90+ Days Past Due [Member] | Consumer [Member] | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Payment Status (Amortized Cost Basis)	$ 0	$ 0

Credit Quality - Schedule of Fi

Credit Quality - Schedule of Financial Effect of Loan and Lease Modifications (Detail)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Weighted-Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (in years)	3 months 18 days	1 year
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Weighted-Average Interest Rate Reduction	0%	1.50%
Weighted Average Term Extension (in years)	6 months	1 year 4 months 24 days
Other Commercial [Member]
Financing Receivable, Modifications [Line Items]
Weighted-Average Interest Rate Reduction	1%	0%
Weighted Average Term Extension (in years)	3 months 18 days	1 year 9 months 18 days
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Weighted-Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (in years)	4 years 10 months 24 days	4 years 7 months 6 days
Construction & Land Development [Member]
Financing Receivable, Modifications [Line Items]
Weighted-Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (in years)	4 years 6 months	0 years
Consumer [Member] | Bankcard [Member]
Financing Receivable, Modifications [Line Items]
Weighted-Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (in years)	0 years	0 years
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Weighted-Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (in years)	0 years	0 years

Allowance for Credit Losses - A

Allowance for Credit Losses - Additional Information (Detail) - USD ($)		12 Months Ended
	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Reserve for lending-related commitments	$ 34,911,000	$ 34,911,000	$ 44,706,000	$ 46,189,000
Maximum Period Related To Accrual Of Interest On Discontinued Loans		90 days
Accrued interest receivable net of allowance for credit loss	$ 102,412,000	$ 102,412,000	111,420,000
Percentage Of Allowance For Loan And Lease Losses		4.86%
Allowance for Loan and Lease Losses, Period Increase (Decrease)		$ 12,607,000,000
2026 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Percentage of projection for real GDP	2%
Percentage of unemployment rate	4.30%
2025 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Percentage Points Increase In Unemployment Rate	4.40%
Percentage points reduction in gdp projection.	2.10%
Percentage of projection for real GDP	2%
Percentage of unemployment rate	4.30%
Accrued Income Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Accrued interest receivable net of allowance for credit loss	$ 87,062,000,000	$ 87,062,000,000	$ 88,963,000,000

Allowance for Credit Losses - S

Allowance for Credit Losses - Schedule Of Credit Losses Related To Accrued Interest Receivables and Written Off (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Accrued Interest Receivables And Written Off Status [Line Items]
Total	$ 87,062	$ 88,963
Other Commercial [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	10,512	14,562
Residential Real Estate [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	21,662	20,718
Owner-Occupied [Member] | Commercial Real Estate [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	4,700	4,751
Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	30,582	27,507
Construction [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	17,174	18,504
Bankcard [Member] | Consumer [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	0	0
Other Consumer [Member] | Consumer [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	$ 2,432	$ 2,921

Allowance for Credit Losses -_2

Allowance for Credit Losses - Schedule of Accrued Interest Receivables Written off by Reversing Interest (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivables Written Off by Reversing Interest Income	$ 2,375	$ 1,025
Construction [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivables Written Off by Reversing Interest Income	23	285
Commercial Real Estate [Member] | Owner-occupied [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivables Written Off by Reversing Interest Income	186	31
Commercial Real Estate [Member] | Nonowner-occupied [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivables Written Off by Reversing Interest Income	853	85
Other Commercial [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivables Written Off by Reversing Interest Income	736	39
Residential Real Estate [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivables Written Off by Reversing Interest Income	232	214
Consumer [Member] | Bankcard [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivables Written Off by Reversing Interest Income	0	0
Consumer [Member] | Other consumer [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivables Written Off by Reversing Interest Income	$ 345	$ 371

Allowance for Credit Losses -_3

Allowance for Credit Losses - Schedule of Allowance for Loan Losses and Carrying Amount of Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	$ 259,237	$ 234,746
Charge-offs	(17,530)	(11,304)
Recoveries	4,985	4,641
Provision	25,152	31,154	$ 18,831
Allowance for Loan and Lease Losses Ending balance	271,844	259,237	234,746
Construction & Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	59,913	48,390
Charge-offs	(29)	(14)
Recoveries	319	80
Provision	3,418	11,457
Allowance for Loan and Lease Losses Ending balance	63,621	59,913	48,390
Bank Card [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	810	561
Charge-offs	(431)	(263)
Recoveries	19	28
Provision	493	484
Allowance for Loan and Lease Losses Ending balance	891	810	561
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	11,895	13,945
Charge-offs	(116)	(855)
Recoveries	1,183	187
Provision	(1,110)	(1,382)
Allowance for Loan and Lease Losses Ending balance	11,852	11,895	13,945
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	57,935	38,543
Charge-offs	(2,581)	(24)
Recoveries	200	1,233
Provision	18,968	18,183
Allowance for Loan and Lease Losses Ending balance	74,522	57,935	38,543
Other Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	75,007	79,706
Charge-offs	(3,589)	(2,007)
Recoveries	1,650	1,729
Provision	(7,963)	(4,421)
Allowance for Loan and Lease Losses Ending balance	65,105	75,007	79,706
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	41,167	36,227
Charge-offs	(481)	(785)
Recoveries	495	697
Provision	5,192	5,028
Allowance for Loan and Lease Losses Ending balance	46,373	41,167	36,227
Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	12,510	17,374
Charge-offs	(10,303)	(7,356)
Recoveries	1,119	687
Provision	6,154	1,805
Allowance for Loan and Lease Losses Ending balance	$ 9,480	$ 12,510	$ 17,374

Allowance for Credit Losses - P

Allowance for Credit Losses - Progression of Allowance for Credit Losses Including Allowance for Loan Losses and Reserve for Lending-Related Commitments (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Receivables [Abstract]
Balance of allowance for loan losses at beginning of period	$ 259,237,000	$ 234,746,000	$ 216,016,000
Gross charge-offs	(17,530,000)	(11,304,000)	(9,650,000)
Recoveries	4,985,000	4,641,000	9,549,000
Net charge-offs	(12,545,000)	(6,663,000)	(101,000)
Provision for loan and lease losses	25,152,000	31,154,000	18,831,000
Balance of allowance for loan losses at end of period	271,844,000	259,237,000	234,746,000
Reserve for lending-related commitments	34,911,000	44,706,000	46,189,000
Balance of allowance for credit losses at end of period	$ 306,755,000	$ 303,943,000	$ 280,935,000

Bank Premises and Equipment - B

Bank Premises and Equipment - Bank Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Bank premises and equipment, Gross	$ 422,268	$ 428,613
Less allowance for depreciation and amortization	(236,137)	(238,093)
Bank premises and equipment	186,131	190,520
Land [Member]
Property, Plant and Equipment [Line Items]
Bank premises and equipment, Gross	62,506	62,506
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Bank premises and equipment, Gross	206,281	204,841
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Bank premises and equipment, Gross	43,971	42,752
Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Bank premises and equipment, Gross	$ 109,510	$ 118,514

Bank Premises and Equipment - A

Bank Premises and Equipment - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 15,709,000	$ 17,191,000	$ 18,237,000
Amortization expense	$ 310,000	$ 310,000	$ 343,000

Leases - Additional Information

Leases - Additional Information (Detail)	Dec. 31, 2024
Operating leases, option to extend term	5 years
Minimum [Member]
Operating lease remaining lease term	1 year
Maximum [Member]
Operating lease remaining lease term	14 years

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Operating lease cost	$ 20,367	$ 21,280
Sublease income	(184)	(244)
Net lease cost	$ 20,183	$ 21,036

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Operating lease right-of-use assets	$ 81,742	$ 86,986
Operating lease liabilities	$ 86,771	$ 92,885

Leases - Other Information Rela

Leases - Other Information Related to Leases (Detail)	Dec. 31, 2024
Weighted-average remaining lease term:
Operating leases	7 years 5 months 15 days
Weighted-average discount rate:
Operating leases	3.18%

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash paid for amounts in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 19,900	$ 21,581	$ 21,240
ROU assets obtained in the exchange for lease liabilities	$ 8,896	$ 33,403	$ 9,184

Leases - Maturities of Lease Li

Leases - Maturities of Lease Liabilities by Year (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
2025	$ 17,115
2026	15,501
2027	13,597
2028	11,628
2029	9,700
Thereafter	30,807
Total lease payments	98,348
Less: imputed interest	(11,577)
Total	$ 86,771	$ 92,885

Intangible Assets - Summary of

Intangible Assets - Summary of Intangible Assets (Detail) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Goodwill not subject to amortization	$ 1,888,889,000	$ 1,888,889,000
Core Deposit Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	105,165,000	105,165,000
Accumulated Amortization	(96,299,000)	(92,660,000)
Community Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill not subject to amortization	1,888,889,000	1,883,574,000
Community Banking [Member] | Core Deposit Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	105,165,000	105,165,000
Accumulated Amortization	$ (96,299,000)	(92,660,000)
Mortgage Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill not subject to amortization		5,315,000
Mortgage Banking [Member] | Core Deposit Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		0
Accumulated Amortization		$ 0

Intangible Assets - Schedule of

Intangible Assets - Schedule of Anticipated Amortization Expense (Detail) $ in Thousands	Dec. 31, 2024 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2025	$ 3,282
2026	2,758
2027	1,152
2028	560
2029	535
2030 and thereafter	$ 579

Mortgage Servicing Rights - Add

Mortgage Servicing Rights - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Servicing Assets at Fair Value [Line Items]
Estimated fair value of mortgage servicing rights	$ 0	$ 4,554,000
Mortgage Servicing Rights [Member]
Servicing Assets at Fair Value [Line Items]
Loans serviced for others unpaid principal balance		$ 1,202,448,000
Net servicing fee percentage		0.25%
Gain (Loss) on Disposition of Other Assets		$ 7,086,000,000
Mortgage Servicing Rights [Member] | Minimum [Member]
Servicing Assets at Fair Value [Line Items]
Discount rate used in estimating the fair value of servicing rights		10.50%
Weighted average prepayment rates used in estimating the fair value of servicing rights	10.58%
Deliquency rate used in determning fair value of servicing rights	7.84%
Mortgage Servicing Rights [Member] | Maximum [Member]
Servicing Assets at Fair Value [Line Items]
Discount rate used in estimating the fair value of servicing rights		10.82%
Weighted average prepayment rates used in estimating the fair value of servicing rights	9.43%
Deliquency rate used in determning fair value of servicing rights	10.25%
Mortgage Servicing Rights [Member] | Weighted Average [Member] | Including Loans On Forbearance [Member]
Servicing Assets at Fair Value [Line Items]
Deliquency rate used in determning fair value of servicing rights	3.29%
Mortgage Servicing Rights [Member] | Loan Origination Commitments [Member] | Median [Member]
Servicing Assets at Fair Value [Line Items]
Estimated fair value of mortgage servicing rights	$ 0	$ 13,427,000

Mortgage Servicing Rights - Sum

Mortgage Servicing Rights - Summary of Activity in Mortgage Servicing Rights (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Servicing Asset at Amortized Cost [Line Items]
Amount sold	$ (12,489)	$ (23,450)	$ 0
MSRs valuation allowance beginning balance	0	0
Aggregate additions charged and recoveries credited to operations	0	0
MSRs impairment	0	0
MSRs valuation allowance ending balance	0	0	0
MSRs, net of valuation allowance	0	4,554
Mortgage Servicing Rights [Member]
Servicing Asset at Amortized Cost [Line Items]
MSRs beginning balance	4,554	21,022
Amount sold	(3,934)	(15,001)
Amount capitalized	0	715
Amount amortized	(620)	(2,182)
MSRs ending balance	$ 0	$ 4,554	$ 21,022

Deposits - Book Value of Deposi

Deposits - Book Value of Deposits (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deposits [Abstract]
Noninterest-bearing accounts	$ 6,135,413	$ 6,149,080
Interest-bearing transaction accounts	5,936,925	5,648,135
Regular savings	1,250,295	1,345,258
Interest-bearing money market accounts	7,056,897	6,349,453
Time deposits under $100,000	1,172,462	1,066,092
Time deposits over $100,000	2,409,867	2,261,301
Total deposits	$ 23,961,859	$ 22,819,319

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deposits [Line Items]
Time deposits over $250,000	$ 1,115,748,000	$ 842,118,000
Deposits	23,961,859,000	22,819,319,000
Subsidiaries [Member]
Deposits [Line Items]
Deposits	34,197,000	47,857,000
Deposits [Member]
Deposits [Line Items]
Interest paid	$ 537,661,000	$ 377,008,000	$ 77,271,000

Short-Term Borrowings - Short-T

Short-Term Borrowings - Short-Term Borrowings and the Related Weighted-Average Interest Rates (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Short-term Debt [Line Items]
Short-term borrowings	$ 176,090	$ 196,095
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Short-term borrowings	0	0
Securities Sold Under Agreements to Repurchase [Member]
Short-term Debt [Line Items]
Short-term borrowings	$ 176,090	$ 196,095

Short-Term Borrowings - Additio

Short-Term Borrowings - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Short-term Debt [Line Items]
Unused lines of credit	$ 280,000,000
Short-Term Borrowings [Member]
Short-term Debt [Line Items]
Interest paid	8,063,000	$ 6,390,000	$ 1,747,000
Unrelated Financial Institution [Member]
Short-term Debt [Line Items]
Unused lines of credit	$ 20,000,000
Renewal period of line of credit	360 days
Amount of outstanding balance under line of credit	$ 0

Long-Term Borrowings - Addition

Long-Term Borrowings - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Carrying value of loans pledged as collateral for FHLB advances	$ 21,401,649,000	$ 21,099,847,000
Unused borrowing amount		8,144,327,000
FHLB advances	260,199,000	1,510,487,000
Outstanding balances of debentures	$ 280,221,000	278,616,000
Maximum time to defer payment of interest on subordinate debt	5 years
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	$ 260,199,000	1,510,487,000
Two Thousand And Twenty Five [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	260,199,000
Long-Term Borrowings [Member]
Debt Instrument [Line Items]
Interest paid	44,911,000	$ 84,775,000	$ 19,143,000
LIBOR Indexed Floating Rate Subordinated Note [Member] | Community Bankers Trust [Member]
Debt Instrument [Line Items]
Business combination subordinated notes assumed Face Value	10,000,000
Federal Home Loan Bank Borrowings [Member] | Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Carrying value of loans pledged as collateral for FHLB advances	$ 7,408,250,000

Long-Term Borrowings - FHLB Adv

Long-Term Borrowings - FHLB Advances and Related Weighted Average Interest Rates (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
FHLB advances, Amount	$ 260,199	$ 1,510,487
FHLB advances, Weighted-Average Contractual Rate	4.62%	5.43%
FHLB advances, Weighted-Average Effective Rate	0.63%	3.75%

Long -Term Borrowings - Informa

Long -Term Borrowings - Information Related to Statutory Trusts (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)
United Statutory Trust III [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 17, 2003
Amount of Capital Securities Issued	$ 20,000
Stated Interest Rate	3-month CME Term SOFR + 2.85%
Maturity Date	Dec. 17, 2033
United Statutory Trust IV [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 19, 2003
Amount of Capital Securities Issued	$ 25,000
Stated Interest Rate	3-month CME Term SOFR + 2.85%
Maturity Date	Jan. 23, 2034
United Statutory Trust V [Member]
Variable Interest Entity [Line Items]
Issuance Date	Jul. 12, 2007
Amount of Capital Securities Issued	$ 50,000
Stated Interest Rate	3-month CME Term SOFR + 1.55%
Maturity Date	Oct. 01, 2037
United Statutory Trust VI [Member]
Variable Interest Entity [Line Items]
Issuance Date	Sep. 20, 2007
Amount of Capital Securities Issued	$ 30,000
Stated Interest Rate	3-month CME Term SOFR + 1.30%
Maturity Date	Dec. 15, 2037
Premier Statutory Trust II [Member]
Variable Interest Entity [Line Items]
Issuance Date	Sep. 25, 2003
Amount of Capital Securities Issued	$ 6,000
Stated Interest Rate	3-month CME Term SOFR + 3.10%
Maturity Date	Oct. 08, 2033
Premier Statutory Trust III [Member]
Variable Interest Entity [Line Items]
Issuance Date	May 16, 2005
Amount of Capital Securities Issued	$ 8,000
Stated Interest Rate	3-month CME Term SOFR + 1.74%
Maturity Date	Jun. 15, 2035
Premier Statutory Trust IV [Member]
Variable Interest Entity [Line Items]
Issuance Date	Jun. 20, 2006
Amount of Capital Securities Issued	$ 14,000
Stated Interest Rate	3-month CME Term SOFR + 1.55%
Maturity Date	Sep. 23, 2036
Premier Statutory Trust V [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 14, 2006
Amount of Capital Securities Issued	$ 10,000
Stated Interest Rate	3-month CME Term SOFR + 1.61%
Maturity Date	Mar. 01, 2037
Centra Statutory Trust I [Member]
Variable Interest Entity [Line Items]
Issuance Date	Sep. 20, 2004
Amount of Capital Securities Issued	$ 10,000
Stated Interest Rate	3-month CME Term SOFR + 2.29%
Maturity Date	Sep. 20, 2034
Centra Statutory Trust II [Member]
Variable Interest Entity [Line Items]
Issuance Date	Jun. 15, 2006
Amount of Capital Securities Issued	$ 10,000
Stated Interest Rate	3-month CME Term SOFR + 1.65%
Maturity Date	Jul. 07, 2036
VCBI Capital Trust II [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 19, 2002
Amount of Capital Securities Issued	$ 15,000
Stated Interest Rate	6-month CME Term SOFR + 3.30%
Maturity Date	Dec. 19, 2032
VCBI Capital Trust III [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 20, 2005
Amount of Capital Securities Issued	$ 25,000
Stated Interest Rate	3-month CME Term SOFR + 1.42%
Maturity Date	Feb. 23, 2036
Cardinal Statutory Trust I [Member]
Variable Interest Entity [Line Items]
Issuance Date	Jul. 27, 2004
Amount of Capital Securities Issued	$ 20,000
Stated Interest Rate	3-month CME Term SOFR + 2.40%
Maturity Date	Sep. 15, 2034
UFBC Capital Trust I [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 30, 2004
Amount of Capital Securities Issued	$ 5,000
Stated Interest Rate	3-month CME Term SOFR + 2.10%
Maturity Date	Mar. 15, 2035
Carolina Financial Capital Trust I [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 19, 2002
Amount of Capital Securities Issued	$ 5,000
Stated Interest Rate	Prime + 0.50%
Maturity Date	Dec. 31, 2032
Carolina Financial Capital Trust II [Member]
Variable Interest Entity [Line Items]
Issuance Date	Nov. 05, 2003
Amount of Capital Securities Issued	$ 10,000
Stated Interest Rate	3-month CME Term SOFR + 3.05%
Maturity Date	Jan. 07, 2034
Greer Capital Trust I [Member]
Variable Interest Entity [Line Items]
Issuance Date	Oct. 12, 2004
Amount of Capital Securities Issued	$ 6,000
Stated Interest Rate	3-month CME Term SOFR + 2.20%
Maturity Date	Oct. 18, 2034
Greer Capital Trust II [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 28, 2006
Amount of Capital Securities Issued	$ 5,000
Stated Interest Rate	3-month CME Term SOFR + 1.73%
Maturity Date	Jan. 30, 2037
First South Preferred Trust I [Member]
Variable Interest Entity [Line Items]
Issuance Date	Sep. 26, 2003
Amount of Capital Securities Issued	$ 10,000
Stated Interest Rate	3-month CME Term SOFR + 2.95%
Maturity Date	Sep. 30, 2033
BOE Statutory Trust I [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 12, 2003
Amount of Capital Securities Issued	$ 4,000
Stated Interest Rate	3-month CME Term SOFR + 3.00%
Maturity Date	Dec. 12, 2033

Long -Term Borrowings - Infor_2

Long -Term Borrowings - Information Related to Statutory Trusts Parenthetical (Detail)	12 Months Ended
	Dec. 31, 2024
3-month [Member]
Variable Interest Entity [Line Items]
Debt instrument, basis spread on variable rate	0.26161%
6-month [Member]
Variable Interest Entity [Line Items]
Debt instrument, basis spread on variable rate	0.42826%

Long -Term Borrowings - Debentu

Long -Term Borrowings - Debentures and Related Weighted Average Interest Rates (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Amount	$ 280,221	$ 278,616
Weighted-Average Rate	6.88%	7.75%
United Statutory Trust III [Member]
Debt Instrument [Line Items]
Amount	$ 20,619	$ 20,619
Weighted-Average Rate	7.46%	8.49%
United Statutory Trust IV [Member]
Debt Instrument [Line Items]
Amount	$ 25,774	$ 25,774
Weighted-Average Rate	7.70%	8.50%
United Statutory Trust V [Member]
Debt Instrument [Line Items]
Amount	$ 51,547	$ 51,547
Weighted-Average Rate	6.40%	7.21%
United Statutory Trust VI [Member]
Debt Instrument [Line Items]
Amount	$ 30,928	$ 30,928
Weighted-Average Rate	5.92%	6.95%
Premier Statutory Trust II [Member]
Debt Instrument [Line Items]
Amount	$ 6,186	$ 6,186
Weighted-Average Rate	8.02%	8.76%
Premier Statutory Trust III [Member]
Debt Instrument [Line Items]
Amount	$ 8,248	$ 8,248
Weighted-Average Rate	6.95%	7.39%
Premier Statutory Trust IV [Member]
Debt Instrument [Line Items]
Amount	$ 14,433	$ 14,433
Weighted-Average Rate	6.15%	7.17%
Premier Statutory Trust V [Member]
Debt Instrument [Line Items]
Amount	$ 10,310	$ 10,310
Weighted-Average Rate	6.37%	7.25%
Centra Statutory Trust I [Member]
Debt Instrument [Line Items]
Amount	$ 10,000	$ 10,000
Weighted-Average Rate	6.91%	7.92%
Centra Statutory Trust II [Member]
Debt Instrument [Line Items]
Amount	$ 10,000	$ 10,000
Weighted-Average Rate	6.57%	7.31%
Virginia Commerce Trust II [Member]
Debt Instrument [Line Items]
Amount	$ 13,627	$ 13,397
Weighted-Average Rate	8.31%	8.88%
Virginia Commerce Trust III [Member]
Debt Instrument [Line Items]
Amount	$ 19,899	$ 19,373
Weighted-Average Rate	6.20%	7.06%
Cardinal Statutory Trust I [Member]
Debt Instrument [Line Items]
Amount	$ 16,812	$ 16,414
Weighted-Average Rate	7.02%	8.05%
UFBC Capital Trust I [Member]
Debt Instrument [Line Items]
Amount	$ 4,076	$ 3,971
Weighted-Average Rate	6.72%	7.75%
Carolina Financial Capital Trust I [Member]
Debt Instrument [Line Items]
Amount	$ 5,046	$ 5,034
Weighted-Average Rate	8%	9%
Carolina Financial Capital Trust II [Member]
Debt Instrument [Line Items]
Amount	$ 9,641	$ 9,572
Weighted-Average Rate	7.97%	8.71%
Greer Capital Trust I [Member]
Debt Instrument [Line Items]
Amount	$ 5,419	$ 5,341
Weighted-Average Rate	7.09%	7.86%
Greer Capital Trust II [Member]
Debt Instrument [Line Items]
Amount	$ 4,275	$ 4,184
Weighted-Average Rate	6.58%	7.38%
First South Preferred Trust I [Member]
Debt Instrument [Line Items]
Amount	$ 9,587	$ 9,513
Weighted-Average Rate	7.54%	8.54%
BOE Statutory Trust I [Member]
Debt Instrument [Line Items]
Amount	$ 3,794	$ 3,772
Weighted-Average Rate	7.59%	8.59%

Long -Term Borrowings - Schedul

Long -Term Borrowings - Schedule of Maturities of Long-term Borrowings (Detail) $ in Thousands	Dec. 31, 2024 USD ($)
Debt Disclosure [Abstract]
2025	$ 260,199
2026	0
2027	0
2028	0
2029	0
2030 and thereafter	280,221
Total	$ 540,420

Other Expense - Other Expense (

Other Expense - Other Expense (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Income and Expenses [Abstract]
Legal, consulting & other professional services	$ 24,330,000	$ 25,604,000	$ 24,403,000
Franchise & other taxes not on income	16,916,000	16,202,000	13,537,000
Expense for reserve on lending-related commitments	9,795,000	1,483,000	14,747,000
Automated Teller Machine ("ATM") expenses	11,885,000	10,914,000	10,250,000
Amortization of income tax credits	$ 15,277,000	$ 15,238,000	$ 13,567,000

Income Taxes - Income Tax Provi

Income Taxes - Income Tax Provisions Included in the Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current expense:
Federal									$ 77,347	$ 84,441	$ 86,799
State									17,604	15,972	16,244
Deferred expense (benefit):
Federal									334	(2,053)	(6,016)
State									(3,702)	(868)	(871)
Total income taxes	$ 26,651	$ 24,649	$ 18,878	$ 21,405	$ 24,813	$ 24,779	$ 23,452	$ 24,448	$ 91,583	$ 97,492	$ 96,156

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Taxes [Line Items]
Federal income tax (benefit) expense applicable to sales and calls of securities	$ 2,456,000	$ 1,608,000	$ 287,000
Income taxes paid	91,689,000	106,083,000	93,680,000
State net operating loss carryforwards	0
Franchise & other taxes not on income	16,916,000	16,202,000	13,537,000
Valuation allowance recorded	$ 0	0
Estimate of unrecognized tax benefits, reasonable possible	United cannot reasonably estimate the amount of tax benefits, if any, it may recognize over the next 12 months.
Accrued interest related to uncertain tax positions	$ 651,000	747,000
Interest or penalties were recognized	$ 0	$ 0	$ 0

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Income Tax Expense to the Amount Computed by Applying the Statutory Federal Income Tax Rate (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Tax on income before taxes at statutory federal rate									$ 97,562	$ 97,399	$ 99,914
Plus: State income taxes net of federal tax benefits									13,591	11,847	12,431
Income tax before adjustments									111,153	109,246	112,345
Tax-exempt interest income									(2,439)	(2,974)	(3,477)
Tax credits									(16,520)	(15,196)	(14,326)
Other items-net									(611)	6,416	1,614
Total income taxes	$ 26,651	$ 24,649	$ 18,878	$ 21,405	$ 24,813	$ 24,779	$ 23,452	$ 24,448	$ 91,583	$ 97,492	$ 96,156
Tax on income before taxes at statutory federal rate, rate									21%	21%	21%
Plus: State income taxes net of federal tax benefits, rate									2.90%	2.60%	2.60%
Income tax before adjustments, rate									23.90%	23.60%	23.60%
Increase (decrease) resulting from:
Tax-exempt interest income, rate									(0.50%)	(0.60%)	(0.70%)
Tax credits, percentage									(3.50%)	(3.30%)	(3.00%)
Other items-net, rate									(0.20%)	1.30%	0.30%
Income taxes, rate									19.70%	21%	20.20%

Income Taxes - Components of Un

Income Taxes - Components of United's Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Allowance for credit losses	$ 73,315	$ 70,818
Accrued benefits payable	20,256	18,287
Other accrued liabilities	1,857	2,857
Unrealized loss on securities available for sale	77,189	84,683
Other real estate owned	127	512
Lease liabilities under operating leases	20,738	21,642
Income tax credit carryforward	4,415	0
Deferred mortgage points	425	2,081
Total deferred tax assets	198,322	200,880
Deferred tax liabilities:
Premises and equipment	8,307	8,789
Right-of-use assets under operating leases	19,536	20,267
Pension plan accruals	10,743	7,251
Derivatives	10,487	12,137
Purchase accounting intangibles	6,626	5,940
Other	1,063	1,497
Total deferred tax liabilities	56,762	55,881
Net deferred tax assets	$ 141,560	$ 144,999

Income Taxes - Reconciliation_2

Income Taxes - Reconciliation of the Total Amounts of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Unrecognized tax benefits at beginning of year	$ 2,599	$ 2,521
Increase in unrecognized tax benefits as a result of tax positions taken during the current period	323	242
Decreases in the unrecognized tax benefits as a result of a lapse of the applicable statute of limitations	(778)	(164)
Unrecognized tax benefits at end of year	$ 2,144	$ 2,599

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Unrecognized actuarial gains (losses), before tax	$ 17,884,000
Unrecognized actuarial gains (losses), net of tax	9,645,000
Amount of United common stock held in the pension plan	$ 183,035,000	$ 173,840,000	$ 165,320,000
Percentage of equity securities include united common stock	(100.00%)	(100.00%)
Percentage of projected benefit obligation	10%
Minimum number of days required to be eligible for the participation in the plan	90 days
Percentage of salary deferred under condition one of contribution by company	100%
First percentage of salary deferred under condition one of contribution by company	5%
Vesting percentage of employee deferrals	100%
Cost related to savings and stock investment plan	$ 7,332,000	$ 7,590,000	8,242,000
Employer contribution in shares of common stock	1,810,400	1,828,171
Dividends paid on United common stock	$ 2,727,000	$ 2,468,000	$ 2,340,000
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage allowed as of contribution to respective accounts by participants	1%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage allowed as of contribution to respective accounts by participants	100%
Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Amount of United common stock held in the pension plan	$ 19,539,000	$ 23,868,000
Percentage of equity securities include united common stock	(4.00%)	(4.00%)
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Amount of United common stock held in the pension plan	$ 3,974,000	$ 3,974,000
Percentage of equity securities include united common stock	(56.00%)	(56.00%)
Maximum percentage limit of common stock to invest in portfolio for any industry	48%
Approximate fair value of plan assets	$ 67,981,000	$ 68,648,000
Equity Securities [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage limit of common stock to invest in portfolio for any industry	20%
Equity Securities [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage limit of common stock to invest in portfolio for any industry	70%
Individual Company [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage limit of common stock to invest in portfolio for any industry	10%
Industry [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage limit of common stock to invest in portfolio for any industry	15%
Securities of U.S. Government or Agencies [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage limit of common stock to invest in portfolio for any industry	15%

Employee Benefit Plans - Net Pe

Employee Benefit Plans - Net Periodic Pension Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,387	$ 1,440	$ 2,669
Interest cost	$ 6,967	7,134	4,988
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense, Deposits
Expected return on plan assets	$ (10,659)	(11,762)	(12,942)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest and Dividend Income, Operating
Amortization of net actuarial loss	$ 2,315	3,347	3,645
Net periodic pension cost (income)	$ 10	$ 159	$ (1,640)
Weighted-Average Assumptions:
Discount rate	5.07%	5.26%	3.08%
Expected return on assets	6.25%	7.25%	6.25%
Prior to Age 40 [Member]
Weighted-Average Assumptions:
Rate of Compensation increase	5%	5%	5%
Ages 40-54 [Member]
Weighted-Average Assumptions:
Rate of Compensation increase	4%	4%	4%
Otherwise [Member]
Weighted-Average Assumptions:
Rate of Compensation increase	3.50%	3.50%	3.50%

Employee Benefit Plans - Schedu

Employee Benefit Plans - Schedule of Amounts Related to Plan recognized as Component of Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Retirement Benefits [Abstract]
Net actuarial gain	$ (12,348)	$ (2,635)	$ (2,195)
Amortization of actuarial loss	(2,315)	(3,347)	(3,645)
Total recognized in other comprehensive income	$ (14,663)	$ (5,982)	$ (5,840)

Employee Benefit Plans - Reconc

Employee Benefit Plans - Reconciliation of the Beginning and Ending Balances of the Projected Benefit Obligation and the Fair Value of Plan Assets and the Accumulated Benefit Obligation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Change in Projected Benefit Obligation
Projected Benefit Obligation at the Beginning of the Year	$ 143,306	$ 140,609
Service cost	1,387	1,440	$ 2,669
Interest cost	6,967	7,134	4,988
Lump Sum Window Payments	0	(4,546)
Actuarial (Gain) Loss	(7,506)	4,918
Benefits Paid	(6,307)	(6,249)
Projected Benefit Obligation at the End of the Year	137,847	143,306	140,609
Accumulated Benefit Obligation at the End of the Year	125,429	131,758
Change in Plan Assets
Fair Value of Plan Assets at the Beginning of the Year	173,840	165,320
Actual Return on Plan Assets	15,502	19,315
Benefits Paid	(6,307)	(6,249)
Fair Value of Plan Assets at End of Year	183,035	173,840	$ 165,320
Net Amount Recognized
Funded Status	45,187	30,534
Unrecognized Actuarial Net Loss	17,884	32,548
Net Amount Recognized	$ 63,071	$ 63,082
Weighted-Average Assumptions at the End of the Year
Discount Rate	5.76%	5.07%
Rate of Compensation Increase	3%	3.50%
Prior to Age 40 [Member]
Weighted-Average Assumptions at the End of the Year
Rate of Compensation Increase	6%	5%
Ages 40-49 [Member]
Weighted-Average Assumptions at the End of the Year
Rate of Compensation Increase	5.50%	0%
Ages 50-54 [Member]
Weighted-Average Assumptions at the End of the Year
Rate of Compensation Increase	5%	0%
Ages 40-54 [Member]
Weighted-Average Assumptions at the End of the Year
Rate of Compensation Increase	0%	4%
Ages 55-64 [Member]
Weighted-Average Assumptions at the End of the Year
Rate of Compensation Increase	4%	0%

Employee Benefit Plans - Asset

Employee Benefit Plans - Asset Allocation for the Defined Benefit Pension Plan as of the Measurement Date, by Asset Category (Detail)	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	100%	100%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	48%
Percentage of Plan Assets	56%	56%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	42%
Percentage of Plan Assets	41%	41%
Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	10%
Percentage of Plan Assets	3%	3%
Minimum [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	20%
Minimum [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	20%
Minimum [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	0%
Maximum [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	70%
Maximum [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	50%
Maximum [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	25%

Employee Benefit Plans - Expect

Employee Benefit Plans - Expected Benefit Payments (Detail) $ in Thousands	Dec. 31, 2024 USD ($)
Retirement Benefits [Abstract]
2025	$ 7,361
2026	7,381
2027	7,775
2028	8,274
2029	8,633
2030 through 2034	$ 47,114

Employee Benefit Plans - Balanc

Employee Benefit Plans - Balances of the Plan Assets, by Fair Value Hierarchy Level (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	$ 183,035	$ 173,840	$ 165,320
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	5,829	4,565
U.S. Government and Agencies [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	24,874	20,052
Mortgage Backed Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	6,588	7,440
Collateralized Mortgage Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	623
Municipal Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	707	1,551
Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	8,394	8,030
General [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	33,537	34,083
Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	19,539	23,868
Equity Mutual Funds Domestic Equity Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	37,990	29,894
Equity Mutual Funds Domestic Equity Small Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	13,332	13,256
Equity Mutual Funds Alternative Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	16,145	15,376
Equity Mutual Funds International Emerging Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	3,993	3,990
Equity Mutual Funds International Equity Developed [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	11,484	11,735
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	183,035	173,840
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	5,829	4,565
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Government and Agencies [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	24,874	20,052
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mortgage Backed Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	6,588	7,440
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Collateralized Mortgage Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	623
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Municipal Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	707	1,551
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	8,394	8,030
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | General [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	33,537	34,083
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	19,539	23,868
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Mutual Funds Domestic Equity Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	37,990	29,894
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Mutual Funds Domestic Equity Small Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	13,332	13,256
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Mutual Funds Alternative Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	16,145	15,376
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Mutual Funds International Emerging Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	3,993	3,990
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Mutual Funds International Equity Developed [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	11,484	11,735
Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Government and Agencies [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | Mortgage Backed Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | Municipal Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | General [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | Equity Mutual Funds Domestic Equity Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | Equity Mutual Funds Domestic Equity Small Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | Equity Mutual Funds International Emerging Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member] | Equity Mutual Funds International Equity Developed [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | U.S. Government and Agencies [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Mortgage Backed Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Municipal Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | General [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Equity Mutual Funds Domestic Equity Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Equity Mutual Funds Domestic Equity Small Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Equity Mutual Funds International Emerging Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Equity Mutual Funds International Equity Developed [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset at fair value	$ 0	$ 0

Stock Based Compensation - Addi

Stock Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	May 12, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares of stock, option plan, maximum				2,300,000
Maximum number of shares of restricted stock or shares subject to a restricted stock units award granted	225,000
Maximum number of options and SARs	100,000
Maximum number of stock options and SARs awarded	10,000
Maximum number of Shares of restricted stock or shares subject to a restricted stock units award granted to individual non-employee director	10,000
Vesting period of awards	1/3 per year
Number of Options granted	0
Recognition of compensation expense	$ 12,130	$ 12,463	$ 9,881
Number of share available for grant for prior plans	0
Maximum term for awards granted (years)	10 years
Total fair value of awards vested	$ 319,000
Cash received from options exercised under the plans	$ 5,274	$ 1,750	10,295
Shares issued related stock option exercises	183,888	75,361
Total intrinsic value of options exercised	$ 1,881	$ 947	6,325
Excess tax benefits from stock-based compensation arrangements	$ 258	$ 128	$ 1,040
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted	184,458
Total unrecognized compensation cost related to nonvested option awards	$ 6,572
Weighted-average expense recognition period	10 months 24 days
Vesting period	3 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options granted	254,592
Number of shares granted	254,592
Total unrecognized compensation cost related to nonvested option awards	$ 8,500
Weighted-average expense recognition period	1 year 2 months 12 days

Stock Based Compensation - Summ

Stock Based Compensation - Summary of Stock Option Plans (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disclosure Stock Based Compensation Stock Option Plan [Abstract]
Shares, Outstanding, Beginning balance	1,337,382
Shares, Exercised	(183,888)	(75,361)
Shares, Forfeited or expired	(103,826)
Shares, Outstanding, Ending balance	1,049,668	1,337,382
Shares, Exercisable at December 31, 2023	1,049,668
Aggregate Intrinsic Value, Outstanding at December 31, 2023	$ 3,275
Aggregate Intrinsic Value, Exercisable at December 31, 2023	$ 3,275
Weighted Average Remaining Contractual Term, Outstanding at December 31, 2023	3 years 2 months 12 days
Weighted Average Remaining Contractual Term, Exercisable at December 31, 2023	3 years 2 months 12 days
Weighted Average Exercise Price, Outstanding, Beginning balance	$ 35.47
Weighted Average Exercise Price, Exercised	30.18
Weighted Average Exercise Price, Forfeited or expired	36.54
Weighted Average Exercise Price, Outstanding, Ending balance	36.29	$ 35.47
Weighted Average Exercise Price, Exercisable	$ 36.29

Stock Based Compensation - Stat

Stock Based Compensation - Status of United's Nonvested Stock Option Awards (Detail)	12 Months Ended
	Dec. 31, 2024 $ / shares shares
Shares, Nonvested, Beginning balance	56,526
Shares, Granted	0
Shares, Vested	(56,526)
Shares, Forfeited or expired	0
Shares, Nonvested, Ending balance	0
Weighted-Average Grant Date Fair Value Per Share, Nonvested Beginning balance | $ / shares	$ 5.65
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	5.65
Weighted-Average Grant Date Fair Value Per Share, Forfeited or expired | $ / shares	0
Weighted-Average Grant Date Fair Value Per Share, Nonvested Ending balance | $ / shares	$ 0
Restricted Stock Units (RSUs) [Member]
Shares, Nonvested, Beginning balance	363,502
Shares, Granted	254,592
Shares, Vested	(127,536)
Shares, Forfeited or expired	(439)
Shares, Nonvested, Ending balance	490,119
Weighted-Average Grant Date Fair Value Per Share, Nonvested Beginning balance | $ / shares	$ 37.53
Weighted-Average Grant Date Fair Value Per Share, Granted | $ / shares	32.8
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	36.28
Weighted-Average Grant Date Fair Value Per Share, Forfeited or expired | $ / shares	34.72
Weighted-Average Grant Date Fair Value Per Share, Nonvested Ending balance | $ / shares	$ 35.41

Stock Based Compensation - Chan

Stock Based Compensation - Changes to United's Restricted Common Shares (Detail) - Restricted Stock [Member]	12 Months Ended
	Dec. 31, 2024 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning balance | shares	333,932
Shares, Granted | shares	184,458
Shares, Vested | shares	(198,950)
Shares, Forfeited | shares	(9,413)
Number of Shares, Outstanding, Ending balance | shares	310,027
Weighted-Average Grant Date Fair Value Per Share, Outstanding, Beginning balance | $ / shares	$ 37.75
Weighted-Average Grant Date Fair Value Per Share, Granted | $ / shares	34.37
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	36.49
Weighted-Average Grant Date Fair Value Per Share, Forfeited | $ / shares	36.67
Weighted-Average Grant Date Fair Value Per Share, Outstanding, Ending balance | $ / shares	$ 36.58

Commitments and Contingent Li_2

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Loan commitments outstanding	$ 5,886,473,000	$ 6,851,890,000
Loan commitments expiry period	1 year
Commitments to Extend Credit [Member] | George Mason [Member] | Short-term Contract with Customer [Member]
Loss Contingencies [Line Items]
Additional commitments to extend credit		416,095,000
Commercial Letters of Credit [Member]
Loss Contingencies [Line Items]
Letters of credit issued	$ 15,546,000	16,233,000
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Letters of credit issued	$ 148,874,000	$ 147,705,000

Derivative Financial Instrume_3

Derivative Financial Instruments - Additional information (Detail) - USD ($)	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2020
Derivative [Line Items]
Derivative liabilities notional amount	$ 3,186,000	$ 77,115,000
Derivative Asset, Notional Amount	337,149,000	$ 615,190,000
Interest Rate Cash Flow Hedge [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	250,000,000
Federal Home Loan Bank Borrowings [Member]
Derivative [Line Items]
Fair value of interest rate swaps liability net	0
Federal Home Loan Bank Borrowings [Member] | Interest Rate Cash Flow Hedge [Member]
Derivative [Line Items]
Derivative liabilities notional amount			$ 500,000,000
Cash flow hedge reclassification amount to be reclassified from aoci to income in the next twelve months	$ 9,131,000

Derivative Financial Instrume_4

Derivative Financial Instruments - Schedule of Notional Amount and Fair Value Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Asset derivatives, notional amount	$ 337,149	$ 615,190
Liability derivatives, notional amount	3,186	77,115
Total asset derivatives	1,261	1,848
Liability derivatives not designated as hedging instruments	20	678
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	260,770	512,032
Asset derivatives not designated as hedging instruments	644	611
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	76,379	103,158
Liability derivatives, notional amount	3,186	77,115
Asset derivatives not designated as hedging instruments	617	1,237
Liability derivatives not designated as hedging instruments	20	678
Fair Value Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	10,770	12,032
Asset derivatives designated as hedging instruments	644	611
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	250,000	500,000
Asset derivatives designated as hedging instruments	0	0
Other Assets [Member] | Not Designated as Hedging Instrument [Member] | TBA Mortgage Backed Securities [Member]
Derivative [Line Items]
Asset derivatives, notional amount	54,826	0
Asset derivatives not designated as hedging instruments	278	0
Other Assets [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Asset derivatives, notional amount	21,553	99,278
Asset derivatives not designated as hedging instruments	339	1,144
Other Liabilities [Member] | TBA Mortgage Backed Securities [Member]
Derivative [Line Items]
Liability derivatives not designated as hedging instruments	0	678
Other Liabilities [Member] | Not Designated as Hedging Instrument [Member] | TBA Mortgage Backed Securities [Member]
Derivative [Line Items]
Liability derivatives, notional amount	0	77,115
Interest Rate Swap Contracts [Member] | Other Assets [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Hedged Commercial Loans [Member]
Derivative [Line Items]
Asset derivatives, notional amount	10,770	12,032
Asset derivatives designated as hedging instruments	644	611
Interest Rate Swap Contracts [Member] | Other Assets [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Hedged Commercial Loans Federal Home Loan Bank [Member]
Derivative [Line Items]
Asset derivatives, notional amount	250,000	500,000
Asset derivatives designated as hedging instruments	0	0
Forward Loan Sale Commitments [Member]
Derivative [Line Items]
Liability derivatives, notional amount	3,186	0
Liability derivatives not designated as hedging instruments	20	0
Forward Loan Sale Commitments [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	0	3,880
Asset derivatives not designated as hedging instruments	$ 0	$ 93

Derivative Financial Instrume_5

Derivative Financial Instruments - Summary of Carrying Amount Hedged Assets/(Liabilities) (Detail) - Designated as Hedging Instrument [Member] - Interest rate swaps [Member] - Loans And Leases Net Of Unearned Income [Member] - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Carrying Amount of the Hedged Assets/(Liabilities)	$ 10,770	$ 12,032
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)	(657)	(632)
Cumulative Amount of Fair Value Hedging Adjustment Remaining for any Hedged Assets/(Liabilities) for which Hedge Accounting has been Discontinued	$ 0	$ 0

Derivative Financial Instrume_6

Derivative Financial Instruments - Schedule of Derivative Financial Instruments on Statements of Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Derivatives in hedging relationships	$ 21,293	$ 22,713	$ (2,666)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Income (Expense), after Provision for Loan Loss
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivatives in hedging relationships	$ 20,940	23,691	5,605
Designated as Hedging Instrument [Member] | Interest on long-term borrowings [Member] | Interest Rate Contracts [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivatives in hedging relationships	20,932	23,574	5,782
Designated as Hedging Instrument [Member] | Interest And Fees On Loans And Leases [Member] | Interest Rate Contracts [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Derivatives in hedging relationships	8	117	(177)
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivatives not designated as hedging instruments	353	(978)	(8,271)
Not Designated as Hedging Instrument [Member] | Income from Mortgage Banking Activities [Member] | TBA Mortgage Backed Securities [Member]
Derivative [Line Items]
Derivatives not designated as hedging instruments	956	(611)	276
Not Designated as Hedging Instrument [Member] | Income from Mortgage Banking Activities [Member] | Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Derivatives not designated as hedging instruments	(489)	(240)	(8,373)
Not Designated as Hedging Instrument [Member] | Income from Mortgage Banking Activities [Member] | Forward Loan Sale Commitments [Member]
Derivative [Line Items]
Derivatives not designated as hedging instruments	$ (114)	$ (127)	$ (174)

Comprehensive Income - Componen

Comprehensive Income - Components of Total Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net Income	$ 94,408	$ 95,267	$ 96,507	$ 86,814	$ 79,390	$ 96,157	$ 92,459	$ 98,307	$ 372,996	$ 366,313	$ 379,627
Available for sale ("AFS") securities:
Change in net unrealized gains (losses) on AFS securities arising during the period									24,251	98,627	(481,007)
Related income tax effect									(5,840)	(22,980)	112,075
Net reclassification adjustment for losses (gains) included in net income									16,296	7,659	(2)
Related income tax effect									(3,852)	(1,785)	0
Total AFS securities - all other									30,855	81,521	(368,934)
Net effect of AFS securities on other comprehensive income									30,855	81,521	(368,934)
Cash flow hedge derivatives:
Unrealized gain on cash flow hedge before reclassification to interest expense									12,744	6,548	53,572
Related income tax effect									(2,987)	(1,526)	(12,482)
Net reclassification adjustment for gains included in net income									(20,932)	(23,574)	(5,782)
Related income tax effect									4,926	5,493	1,347
Net effect of cash flow hedge derivatives on other comprehensive income									(6,249)	(13,059)	36,655
Defined benefit pension plan:
Net actuarial gain during the period									12,348	2,635	2,195
Related income tax expense									(2,951)	(613)	(512)
Related income tax effect									(540)	(780)	(893)
Amortization of net actuarial loss recognized in net income									2,315	3,347	3,645
Net effect of change in defined benefit pension plan on other comprehensive income									11,172	4,589	4,435
Net current-period other comprehensive income (loss), net of tax									35,778	73,051	(327,844)
Total Comprehensive Income									$ 408,774	$ 439,364	$ 51,783

Comprehensive Income - Compon_2

Comprehensive Income - Components of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 4,771,240	$ 4,516,193	$ 4,718,628
Net current-period other comprehensive income (loss), net of tax	35,778	73,051	(327,844)
Ending Balance	4,993,223	4,771,240	4,516,193
Defined Benefit Pension Item [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(20,817)
Other comprehensive income before reclassification	0
Amounts reclassified from accumulated other comprehensive income	11,172
Net current-period other comprehensive income (loss), net of tax	11,172
Ending Balance	(9,645)	(20,817)
Unrealized Gains/Losses on AFS Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(278,819)
Other comprehensive income before reclassification	18,411
Amounts reclassified from accumulated other comprehensive income	12,444
Net current-period other comprehensive income (loss), net of tax	30,855
Ending Balance	(247,964)	(278,819)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(259,681)	(332,732)	(4,888)
Other comprehensive income before reclassification	28,168
Amounts reclassified from accumulated other comprehensive income	7,610
Net current-period other comprehensive income (loss), net of tax	35,778	73,051	(327,844)
Ending Balance	(223,903)	(259,681)	$ (332,732)
Unrealized Gains/Losses on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	39,955
Other comprehensive income before reclassification	9,757
Amounts reclassified from accumulated other comprehensive income	(16,006)
Net current-period other comprehensive income (loss), net of tax	(6,249)
Ending Balance	$ 33,706	$ 39,955

Comprehensive Income - Reclassi

Comprehensive Income - Reclassifications Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Available for sale ("AFS") securities:
Income before income taxes										$ 464,579	$ 463,805	$ 475,783
Related income tax effect		$ (26,651)	$ (24,649)	$ (18,878)	$ (21,405)	$ (24,813)	$ (24,779)	$ (23,452)	$ (24,448)	(91,583)	(97,492)	(96,156)
Net income (loss)		94,408	95,267	96,507	86,814	79,390	96,157	92,459	98,307	372,996	366,313	379,627
Cash flow hedge:
Income before income taxes										464,579	463,805	475,783
Related income tax effect		(26,651)	(24,649)	(18,878)	(21,405)	(24,813)	(24,779)	(23,452)	(24,448)	(91,583)	(97,492)	(96,156)
Net income (loss)		94,408	95,267	96,507	86,814	79,390	96,157	92,459	98,307	372,996	366,313	379,627
Pension plan:
Net actuarial loss										12,348	2,635	2,195
Amortization of net actuarial loss										2,315	3,347	3,645
Income before income taxes										464,579	463,805	475,783
Related income tax effect		(26,651)	(24,649)	(18,878)	(21,405)	(24,813)	(24,779)	(23,452)	(24,448)	(91,583)	(97,492)	(96,156)
Net income (loss)		$ 94,408	$ 95,267	$ 96,507	$ 86,814	$ 79,390	$ 96,157	$ 92,459	$ 98,307	372,996	$ 366,313	$ 379,627
Reclassification out of Accumulated Other Comprehensive Income [Member]
Available for sale ("AFS") securities:
Net income (loss)										7,610
Cash flow hedge:
Net income (loss)										7,610
Pension plan:
Net income (loss)										7,610
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains/Losses on AFS Securities [Member]
Available for sale ("AFS") securities:
Net reclassification adjustment for losses included in net income										16,296
Income before income taxes										16,296
Related income tax effect										(3,852)
Net income (loss)										12,444
Cash flow hedge:
Income before income taxes										16,296
Related income tax effect										(3,852)
Net income (loss)										12,444
Pension plan:
Income before income taxes										16,296
Related income tax effect										(3,852)
Net income (loss)										12,444
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain Loss Net Cash Flow Hedge Parent [Member]
Available for sale ("AFS") securities:
Income before income taxes										(20,932)
Related income tax effect										4,926
Net income (loss)										(16,006)
Cash flow hedge:
Net reclassification adjustment for losses										(20,932)
Income before income taxes										(20,932)
Related income tax effect										4,926
Net income (loss)										(16,006)
Pension plan:
Income before income taxes										(20,932)
Related income tax effect										4,926
Net income (loss)										(16,006)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Available for sale ("AFS") securities:
Income before income taxes										14,663
Related income tax effect										(3,491)
Net income (loss)										11,172
Cash flow hedge:
Income before income taxes										14,663
Related income tax effect										(3,491)
Net income (loss)										11,172
Pension plan:
Net actuarial loss	[1]									12,348
Amortization of net actuarial loss	[2]									2,315
Income before income taxes										14,663
Related income tax effect										(3,491)
Net income (loss)										$ 11,172
[1]This AOCI component is included in the computation of changes in plan assets (see Note P, Employee Benefit Plans)[2]This AOCI component is included in the computation of net periodic pension cost (see Note P, Employee Benefit Plans)

United Bankshares, Inc. (Pare_3

United Bankshares, Inc. (Parent Company Only) Financial Information - Condensed Balance Sheets (Detail) - USD ($)	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and due from banks	$ 240,655,000	$ 257,153,000
Securities available for sale	2,959,719,000	3,786,377,000
Securities held to maturity	1,020,000	1,020,000
Equity securities	21,058,000	8,945,000
Other investment securities	277,517,000	329,429,000
Goodwill	1,888,889,000	1,888,889,000
Other assets	269,641,000	276,413,000
Total Assets	30,023,545,000	29,926,482,000
Accrued expenses and other liabilities	230,271,000	213,134,000
Shareholders' equity (including other accumulated comprehensive losses of $223,903 and $259,681 at December 31, 2024 and 2023, respectively)	4,993,223,000	4,771,240,000	$ 4,516,193,000	$ 4,718,628,000
Total Liabilities and Shareholders' Equity	30,023,545,000	29,926,482,000
United Bankshares [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and due from banks	249,515,000	238,256,000
Securities available for sale	5,663,000	5,846,000
Securities held to maturity	20,000	20,000
Equity securities	15,897,000	3,735,000
Other investment securities	11,400,000	20,704,000
Bank subsidiaries	5,024,692,000	4,818,320,000
Nonbank subsidiaries	55,755,000	54,556,000
Goodwill	(16,715,000)	(16,715,000)
Other assets	32,152,000	28,315,000
Total Assets	5,378,379,000	5,153,037,000
Junior subordinated debentures of subsidiary trusts	280,221,000	278,617,000
Accrued expenses and other liabilities	104,935,000	103,180,000
Shareholders' equity (including other accumulated comprehensive losses of $223,903 and $259,681 at December 31, 2024 and 2023, respectively)	4,993,223,000	4,771,240,000
Total Liabilities and Shareholders' Equity	$ 5,378,379,000	$ 5,153,037,000

United Bankshares, Inc. (Pare_4

United Bankshares, Inc. (Parent Company Only) Financial Information - Condensed Balance Sheets (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Condensed Balance Sheet Statements, Captions [Line Items]
Accumulated other comprehensive loss	$ 223,903	$ 259,681
United Bankshares [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Accumulated other comprehensive loss	$ 223,903	$ 259,681

United Bankshares, Inc. (Pare_5

United Bankshares, Inc. (Parent Company Only) Financial Information - Condensed Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Condensed Income Statements, Captions [Line Items]
Net interest income	$ 232,608	$ 230,256	$ 225,715	$ 222,489	$ 229,690	$ 228,453	$ 227,461	$ 234,320	$ 911,068	$ 919,924	$ 896,431
Income before income taxes and Equity in Undistributed Net Income of Subsidiaries									464,579	463,805	475,783
Applicable income tax benefit	26,651	24,649	18,878	21,405	24,813	24,779	23,452	24,448	91,583	97,492	96,156
Net Income	$ 94,408	$ 95,267	$ 96,507	$ 86,814	$ 79,390	$ 96,157	$ 92,459	$ 98,307	372,996	366,313	379,627
United Bankshares [Member]
Condensed Income Statements, Captions [Line Items]
Bank subsidiaries									231,000	217,000	272,500
Net interest income									933	970	446
Bank subsidiaries									48,307	43,852	35,931
Nonbank subsidiaries									51	27	27
Other income									5,064	2,167	3,053
Total Income									285,355	264,016	311,957
Operating expenses									80,922	67,968	50,242
Income before income taxes and Equity in Undistributed Net Income of Subsidiaries									204,433	196,048	261,715
Applicable income tax benefit									(5,589)	(4,521)	(2,196)
Income of Subsidiaries									210,022	200,569	263,911
Bank subsidiaries									169,778	170,997	117,594
Nonbank subsidiaries									(6,804)	(5,253)	(1,878)
Net Income									$ 372,996	$ 366,313	$ 379,627

United Bankshares, Inc. (Pare_6

United Bankshares, Inc. (Parent Company Only) Financial Information - Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental Cash Flow Information [Line Items]
Net income (loss)	$ 94,408	$ 95,267	$ 96,507	$ 86,814	$ 79,390	$ 96,157	$ 92,459	$ 98,307	$ 372,996	$ 366,313	$ 379,627
Stock-based compensation									12,130	12,463	9,881
Excess tax benefits from stock-based compensation arrangements									(258)	(128)	(1,040)
Net proceeds from sales (purchases) of debt securities									8,113	344	6,782
Repayment of subordinated notes									0	10,250	0
Cash dividends paid									(200,727)	(194,727)	(193,041)
Acquisition of treasury stock									(1,040)	(1,382)	(79,460)
Proceeds from exercise of stock options									5,274	1,750	10,295
Cash and Cash Equivalents at Beginning of Year				1,598,943					1,598,943
Cash and Cash Equivalents at End of Year	2,292,244				1,598,943				2,292,244	1,598,943
United Bankshares [Member]
Supplemental Cash Flow Information [Line Items]
Net income (loss)									372,996	366,313	379,627
Equity in undistributed net income of subsidiaries									(162,974)	(165,744)	(115,716)
Amortization of net periodic pension costs									141	204	220
Stock-based compensation									12,130	12,463	9,881
Excess tax benefits from stock-based compensation arrangements									258	128	1,040
Net change in other assets and liabilities									(5,925)	(5,420)	(6,118)
Net Cash Provided by Operating Activities									216,626	207,944	268,934
Net proceeds from sales (purchases) of debt securities									183	338	(426)
Net proceeds from sales (purchases) of equity securities									130	(1,303)	4,186
Increase in investment in subsidiaries									(8,000)	(16,000)	(13,000)
Change in other investment securities									(1,187)	(1,525)	(6,144)
Net Cash Used in Investing Activities									(8,874)	(18,490)	(15,384)
Repayment of subordinated notes									0	(10,250)	0
Cash dividends paid									(200,727)	(194,727)	(193,041)
Acquisition of treasury stock									(1,040)	(1,382)	(79,460)
Proceeds from exercise of stock options									5,274	1,750	10,295
Net Cash Used in Financing Activities									(196,493)	(204,609)	(262,206)
Increase (Decrease) in Cash and Cash Equivalents									11,259	(15,155)	(8,656)
Cash and Cash Equivalents at Beginning of Year				$ 238,256				$ 253,411	238,256	253,411	262,067
Cash and Cash Equivalents at End of Year	$ 249,515				$ 238,256				$ 249,515	$ 238,256	$ 253,411

Regulatory Matters - Additional

Regulatory Matters - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Regulatory Matters [Line Items]
Average reserve balances to be maintained by subsidiary banks		$ 1,184,007,000	$ 813,480,000
Average reserve balances required by subsidiary banks		$ 0	0
Retained net profits available for distribution to United Bankshares, Inc. by its banking subsidiaries as dividends	$ 340,775,000
Maximum loan to parent company by subsidiaries as percentage it's of capital and surplus		10%
Maximum amount of loan to parent company by subsidiaries			$ 395,066,000

Regulatory Matters - Capital Am

Regulatory Matters - Capital Amounts and Ratios (Detail) $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
United Bankshares [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital to Risk-Weighted Assets, Actual Amount	$ 3,897,755	$ 3,700,453
Tier 1 Capital to Risk-Weighted Assets, Actual Amount	3,335,667	3,162,118
Common Tier I Capital to Risk Weighted Assets, Actual Amount	3,335,667	3,162,118
Tier 1 Capital to Average Assets, Actual Amount	$ 3,335,667	$ 3,162,118
Total Capital to Risk-Weighted Assets, Actual Ratio	16.5	15.4
Tier 1 Capital to Risk-Weighted Assets, Actual Ratio	14.1	13.1
Common Tier I Capital to Risk Weighted Assets, Actual Ratio	14.1	13.1
Tier 1 Capital to Average Assets, Actual Ratio	0.117	11.4
Total Capital to Risk-Weighted Assets, For Capital Adequacy Purposes, Amount	$ 1,887,433	$ 1,924,541
Tier 1 Capital to Risk-Weighted Assets, For Capital Adequacy Purposes, Amount	1,415,575	1,443,405
Common Tier I Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	1,061,681	1,082,554
Tier 1 Capital to Average Assets, For Capital Adequacy Purposes, Amount	$ 1,136,661	$ 1,110,296
Total Capital to Risk-Weighted Assets, For Capital Adequacy, Ratio	8	8
Tier 1 Capital to Risk-Weighted Assets, For Capital Adequacy Purposes, Ratio	6	6
Common Tier I Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	450%	450%
Tier 1 Capital to Average Assets, For Capital Adequacy Purposes, Ratio	0.04	4
Total Capital to Risk-Weighted Assets, To Be Well Capitalized, Amount	$ 2,359,292	$ 2,405,676
Tier 1 Capital to Risk-Weighted Assets, To Be Well Capitalized, Amount	1,887,433	1,924,541
Common Tier I Capital to Risk Weighted Assets, To Be Well Capitalized, Amount	1,533,540	1,563,689
Tier 1 Capital to Average Assets, To Be Well Capitalized, Amount	$ 1,420,827	$ 1,387,870
Total Capital to Risk-Weighted Assets, To Be Well Capitalized, Ratio	10	10
Tier 1 Capital to Risk-Weighted Assets, To Be Well Capitalized, Ratio	8	8
Common Tier I Capital to Risk Weighted Assets, To Be Well Capitalized, Ratio	650%	650%
Tier 1 Capital to Average Assets To Be Well Capitalized, Ratio	0.05	5
United Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital to Risk-Weighted Assets, Actual Amount	$ 3,620,657	$ 3,440,096
Tier 1 Capital to Risk-Weighted Assets, Actual Amount	3,348,071	3,190,950
Common Tier I Capital to Risk Weighted Assets, Actual Amount	3,348,071	3,190,950
Tier 1 Capital to Average Assets, Actual Amount	$ 3,348,071	$ 3,190,950
Total Capital to Risk-Weighted Assets, Actual Ratio	15.4	14.4
Tier 1 Capital to Risk-Weighted Assets, Actual Ratio	14.3	13.3
Common Tier I Capital to Risk Weighted Assets, Actual Ratio	14.3	13.3
Tier 1 Capital to Average Assets, Actual Ratio	0.118	11.5
Total Capital to Risk-Weighted Assets, For Capital Adequacy Purposes, Amount	$ 1,877,704	$ 1,916,834
Tier 1 Capital to Risk-Weighted Assets, For Capital Adequacy Purposes, Amount	1,408,278	1,437,626
Common Tier I Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	1,056,209	1,078,219
Tier 1 Capital to Average Assets, For Capital Adequacy Purposes, Amount	$ 1,132,023	$ 1,108,321
Total Capital to Risk-Weighted Assets, For Capital Adequacy, Ratio	8	8
Tier 1 Capital to Risk-Weighted Assets, For Capital Adequacy Purposes, Ratio	6	6
Common Tier I Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	450%	450%
Tier 1 Capital to Average Assets, For Capital Adequacy Purposes, Ratio	0.04	4
Total Capital to Risk-Weighted Assets, To Be Well Capitalized, Amount	$ 2,347,131	$ 2,396,043
Tier 1 Capital to Risk-Weighted Assets, To Be Well Capitalized, Amount	1,877,704	1,916,834
Common Tier I Capital to Risk Weighted Assets, To Be Well Capitalized, Amount	1,525,635	1,557,428
Tier 1 Capital to Average Assets, To Be Well Capitalized, Amount	$ 1,415,029	$ 1,385,401
Total Capital to Risk-Weighted Assets, To Be Well Capitalized, Ratio	10	10
Tier 1 Capital to Risk-Weighted Assets, To Be Well Capitalized, Ratio	8	8
Common Tier I Capital to Risk Weighted Assets, To Be Well Capitalized, Ratio	650%	650%
Tier 1 Capital to Average Assets To Be Well Capitalized, Ratio	0.05	5

Fair Values of Financial Inst_2

Fair Values of Financial Instruments - Additional Information (Detail) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Transfers from Level 1 to Level 3 for financial assets	$ 0	$ 0
Transfers from Level 3 to Level 1 for financial assets	0	0
Transfers from Level 2 to Level 3 for financial assets	0	0
Transfers from Level 3 to Level 2 for financial assets	0	0
Transfers from Level 1 to Level 3 for financial liabilities	0	0
Transfers from Level 3 to Level 1 for financial liabilities	0	0
Transfers from Level 2 to Level 3 for financial liabilities	0	0
Transfers from Level 3 to Level 2 for financial liabilities	0	0
Fair value measurement of intangible assets	0	0
Loans held for sale	44,360,000	56,261,000
Loans Held For Sale Past Due [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	$ 0	$ 0
Loans Held For Sale [Member] | Minimum [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Sales price of loans held for sale increase percentage	0.12%
Loans Held For Sale [Member] | Maximum [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Sales price of loans held for sale increase percentage	0.64%
Loans Held For Sale [Member] | Weighted Average [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Sales price of loans held for sale increase percentage	0.20%
Derivatives [Member] | Minimum [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Sales price of loans held for sale increase percentage	0.12%
Derivatives [Member] | Maximum [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Sales price of loans held for sale increase percentage	0.64%
Derivatives [Member] | Weighted Average [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Sales price of loans held for sale increase percentage	0.20%

Fair Values of Financial Inst_3

Fair Values of Financial Instruments - Schedule of Financial Assets and Liabilities Measured at Fair Value (Detail) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	$ 21,058,000	$ 8,945,000
Loans held for sale	44,360,000	56,261,000
Derivative financial assets	1,261,000	$ 1,848,000
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Liabilities
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Assets
Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	2,959,719,000	$ 3,786,377,000
Available for sale equity securities	21,058,000	8,945,000
Loans held for sale	44,360,000	56,261,000
Derivative financial assets	1,261,000	1,848,000
Derivative financial liabilities	20,000	678,000
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	245,842,000	484,950,000
State and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	495,073,000	533,831,000
Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	1,059,719,000	1,049,941,000
Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Non-Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	82,123,000	90,611,000
Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	329,986,000	459,298,000
Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	474,982,000	860,638,000
Single Issue Trust Preferred Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	11,919,000	15,141,000
Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	260,075,000	291,967,000
Financial Services Industry [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	12,504	211,000
Interest Rate Lock Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	339,000	1,144,000
Forward Sales Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	20,000	93,000
Interest Rate Swap Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	644,000	611,000
TBA Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial liabilities	278,000	678,000
Fixed Income Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	5,160,000	5,210,000
Equity Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	3,394,000	3,524,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	0	0
Derivative financial assets	0	0
Derivative financial liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	4,965,000	5,159,000
Available for sale equity securities	21,058,000	8,945,000
Loans held for sale	0	0
Derivative financial assets	0	0
Derivative financial liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | State and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Non-Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Single Issue Trust Preferred Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	4,965,000	5,159,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Financial Services Industry [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	12,504,000	211,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Interest Rate Lock Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Forward Sales Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Interest Rate Swap Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | TBA Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fixed Income Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	5,160,000	5,210,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	3,394,000	3,524,000
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	0	4,283,000
Derivative financial assets	644,000	810,000
Derivative financial liabilities	0	11,000
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	2,954,754,000	3,781,218,000
Available for sale equity securities	0	0
Loans held for sale	0	4,283,000
Derivative financial assets	644,000	810,000
Derivative financial liabilities	0	11,000
Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	245,842,000	484,950,000
Significant Other Observable Inputs (Level 2) [Member] | State and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	495,073,000	533,831,000
Significant Other Observable Inputs (Level 2) [Member] | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	1,059,719,000	1,049,941,000
Significant Other Observable Inputs (Level 2) [Member] | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Non-Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	82,123,000	90,611,000
Significant Other Observable Inputs (Level 2) [Member] | Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	329,986,000	459,298,000
Significant Other Observable Inputs (Level 2) [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	474,982,000	860,638,000
Significant Other Observable Inputs (Level 2) [Member] | Single Issue Trust Preferred Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	11,919,000	15,141,000
Significant Other Observable Inputs (Level 2) [Member] | Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	255,110,000	286,808,000
Significant Other Observable Inputs (Level 2) [Member] | Financial Services Industry [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	0	0
Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Lock Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	0	139,000
Significant Other Observable Inputs (Level 2) [Member] | Forward Sales Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	0	60,000
Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Swap Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	644,000	611,000
Significant Other Observable Inputs (Level 2) [Member] | TBA Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial liabilities	0	11,000
Significant Other Observable Inputs (Level 2) [Member] | Fixed Income Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	0	0
Significant Other Observable Inputs (Level 2) [Member] | Equity Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	0	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	44,360,000	51,978,000
Derivative financial assets	617,000	1,038,000
Derivative financial liabilities	20,000	667,000
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Available for sale equity securities	0	0
Loans held for sale	44,360,000	51,978,000
Derivative financial assets	617,000	1,038,000
Derivative financial liabilities	20,000	667,000
Significant Unobservable Inputs (Level 3) [Member] | U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | State and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Residential Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Non-Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Commercial Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Single Issue Trust Preferred Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Financial Services Industry [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Interest Rate Lock Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	339,000	1,005,000
Significant Unobservable Inputs (Level 3) [Member] | Forward Sales Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	20,000	33,000
Significant Unobservable Inputs (Level 3) [Member] | Interest Rate Swap Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	0	0
Significant Unobservable Inputs (Level 3) [Member] | TBA Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial liabilities	278,000	667,000
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Equity Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	$ 0	$ 0

Fair Values of Financial Inst_4

Fair Values of Financial Instruments - Schedule of Additional Information about Financial Assets and Liabilities Measured at Fair Value Utilized Level 3 (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Loans Held For Sale [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	$ 51,978	$ 44,871
Originations	607,383	1,156,616
Sales	(630,244)	(1,179,612)
Transfers in other	0	0
Total gains during the period recognized in earnings	15,243	30,103
Balance, end of period	44,360	51,978
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	(1,133)	1,142
Derivative Financial Assets Tba Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	0	26
Originations	0	0
Sales	0	0
Transfers in other	278	(26)
Total gains during the period recognized in earnings	0	0
Balance, end of period	278	0
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	278	0
Derivative Financial Assets Forward Sales Commitments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	33	6
Originations	0	0
Sales	0	0
Transfers in other	(33)	27
Total gains during the period recognized in earnings	0	0
Balance, end of period	0	33
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	0	33
Interest Rate Lock Commitments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	1,005	844
Originations	0	0
Sales	0	0
Transfers in other	(666)	161
Total gains during the period recognized in earnings	0	0
Balance, end of period	339	1,005
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	339	1,005
Derivative Financial Liabilities Forward Sales Commitments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	0
Originations	0
Sales	0
Transfers in other	20
Total gains during the period recognized in earnings	0
Balance, end of period	20	0
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	20
Derivative Financial Liabilities Tba Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	667	213
Originations	0	0
Sales	0	0
Transfers in other	(667)	454
Total gains during the period recognized in earnings	0	0
Balance, end of period	0	667
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	0	667
Derivative Financial Liabilities Interest Rate Lock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	$ 0	348
Originations		0
Sales		0
Transfers in other		(348)
Total gains during the period recognized in earnings		0
Balance, end of period		0
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date		$ 0

Fair Values of Financial Inst_5

Fair Values of Financial Instruments - Schedule of Changes in Fair Value Included in Earnings of Financial Instruments for which Fair Value Option has been Elected (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Mortgage Banking [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Income from mortgage banking activities	$ (1,222)	$ 1,175

Fair Values of Financial Inst_6

Fair Values of Financial Instruments - Summary of Difference Between Aggregate Fair Value and Remaining Contractual Principal Outstanding for Financial Instruments for which Fair Value Option has been Elected (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Loans held for sale, unpaid principal balance	$ 43,698	$ 54,377
Loans held for sale, fair value	44,360	56,261
Loans held for sale, fair value over/(under) unpaid principal balance	$ 662	$ 1,884

Fair Values of Financial Inst_7

Fair Values of Financial Instruments - Summary of Financial Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
YTD Losses, Individually assessed loans	$ (231)	$ 314
YTD Losses, OREO	0	(67)
OREO	327,000	2,615,000
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Individually assessed loans	40,701	45,308
OREO	327	2,615
Fair Value, Measurements, Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Individually assessed loans	0	0
OREO	0	0
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Individually assessed loans	21,725	44,722
OREO	240	2,615
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Individually assessed loans	18,976	586
OREO	$ 87	$ 0

Fair Values of Financial Inst_8

Fair Values of Financial Instruments - Summary of Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 2,292,244	$ 1,598,943
Securities available for sale	2,959,719	3,786,377
Securities held to maturity	1,002	1,003
Other securities	277,517	329,429
Loans held for sale	44,360	56,261
Net loans	21,673,493	21,359,084
Derivative financial assets	1,261	1,848
Mortgage servicing rights	0	4,554
Deposits	23,961,859	22,819,319
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	2,292,244	1,598,943
Securities available for sale	2,959,719	3,786,377
Securities held to maturity	1,002	1,003
Other securities	277,517	329,429
Loans held for sale	44,360	56,261
Net loans	21,401,649	21,099,847
Derivative financial assets	1,261	1,848
Mortgage servicing rights	0	4,554
Deposits	23,961,859	22,819,319
Short-term borrowings	176,090	196,095
Long-term borrowings	540,420	1,789,103
Derivative financial liabilities	20	678
Carrying Amount [Member] | Marketable Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	21,058	8,945
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	2,292,244	1,598,943
Securities available for sale	2,959,719	3,786,377
Securities held to maturity	1,020	1,020
Other securities	263,641	312,958
Loans held for sale	44,360	56,261
Net loans	20,868,239	20,463,710
Derivative financial assets	1,261	1,848
Mortgage servicing rights	0	13,427
Deposits	23,922,063	22,760,310
Short-term borrowings	176,090	196,095
Long-term borrowings	505,305	1,769,123
Derivative financial liabilities	20	678
Fair Value [Member] | Marketable Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	21,058	8,945
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Securities available for sale	4,965	5,159
Securities held to maturity	0	0
Other securities	0	0
Loans held for sale	0	0
Net loans	0	0
Derivative financial assets	0	0
Mortgage servicing rights	0	0
Deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Derivative financial liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Marketable Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	21,058	8,945
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	2,292,244	1,598,943
Securities available for sale	2,954,754	3,781,218
Securities held to maturity	0	0
Other securities	0	0
Loans held for sale	0	4,283
Net loans	0	0
Derivative financial assets	644	810
Mortgage servicing rights	0	0
Deposits	23,922,063	22,760,310
Short-term borrowings	176,090	196,095
Long-term borrowings	505,305	1,769,123
Derivative financial liabilities	0	11
Significant Other Observable Inputs (Level 2) [Member] | Marketable Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	0	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Securities available for sale	0	0
Securities held to maturity	1,020	1,020
Other securities	263,641	312,958
Loans held for sale	44,360	51,978
Net loans	20,868,239	20,463,710
Derivative financial assets	617	1,038
Mortgage servicing rights	0	13,427
Deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Derivative financial liabilities	20	667
Significant Unobservable Inputs (Level 3) [Member] | Marketable Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	$ 0	$ 0

Variable Interest Entities - Ad

Variable Interest Entities - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2024 USD ($) Trust	Dec. 31, 2023 USD ($)
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Number of statutory business trusts | Trust	20
Percentage of equity shares of each trust owned by the company	100%
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 98,441,000	$ 87,554,000
Trust Preferred Securities Subject to Mandatory Redemption [Member]
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	12,238,000	11,751,000
Unfunded Loan Commitment [Member]
Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 89,292,000	$ 63,539,000

Segment Information - Summary O

Segment Information - Summary Of Community Banking Segment Information (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Total Assets		$ 30,023,545				$ 29,926,482				$ 30,023,545	$ 29,926,482
Net interest income		232,608	$ 230,256	$ 225,715	$ 222,489	229,690	$ 228,453	$ 227,461	$ 234,320	911,068	919,924	$ 896,431
Provision for credit losses		6,691	6,943	5,779	5,740	6,875	5,948	11,440	6,890	25,153	31,153	18,822
Other income										123,695	135,258	153,261
Employee compensation										234,618	230,809	242,408
Employee benefits										53,621	48,368	45,944
Net occupancy expense										46,084	46,426	45,129
OREO expense										576	1,355	2,138
Net (gains) losses on the sales of OREO properties										75	60	(700)
Equipment Expense										29,686	29,731	29,320
Data processing expense										29,646	29,395	29,997
Mortgage loan servicing expense and impairment										2,694	5,596	7,099
Bankcard Processing Expense										2,490	2,192	1,938
FDIC insurance expense										19,735	30,376	11,988
Income before income taxes										464,579	463,805	475,783
Income taxes		26,651	24,649	18,878	21,405	24,813	24,779	23,452	24,448	91,583	97,492	96,156
Segment net income										372,996	366,313	379,627
Net Income (Loss)		94,408	$ 95,267	$ 96,507	$ 86,814	79,390	$ 96,157	$ 92,459	$ 98,307	372,996	366,313	379,627
Operating Segments [Member] | Community Banking [Member]
Segment Reporting Information [Line Items]
Total Assets		$ 30,023,545				$ 29,926,482				30,023,545	29,926,482	29,489,380
Net interest income										911,068	919,924	896,431
Provision for credit losses										25,153	31,153	18,822
Other income										123,695	135,258	153,261
Employee compensation										234,618	230,809	242,408
Employee benefits										53,621	48,368	45,944
Net occupancy expense										46,084	46,426	45,129
OREO expense										576	1,355	2,138
Net (gains) losses on the sales of OREO properties										(75)	(60)	700
Equipment Expense										29,686	29,731	29,320
Data processing expense										29,646	29,395	29,997
Mortgage loan servicing expense and impairment										2,694	5,596	7,099
Bankcard Processing Expense										2,490	2,192	1,938
FDIC insurance expense										19,735	30,376	11,988
Other segment expense	[1]									125,956	136,036	138,426
Total other expense										545,031	560,224	555,087
Income before income taxes										464,579	463,805	475,783
Income taxes										91,583	97,492	96,156
Segment net income										372,996	366,313	379,627
Adjustments and reconciling items										0	0	0
Net Income (Loss)										$ 372,996	$ 366,313	$ 379,627
[1]Other segment expense includes legal, consulting and other professional services expense, franchise and other taxes not on income, expense for reserve on lending-related commitments, ATM expenses, marketing expense, core deposits amortization, and other general operating expenses.

Quarterly Financial Data - Quar

Quarterly Financial Data - Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 376,034	$ 382,723	$ 374,184	$ 369,180	$ 369,175	$ 356,910	$ 345,932	$ 329,303	$ 1,502,121	$ 1,401,320	$ 1,001,990
Interest expense	143,426	152,467	148,469	146,691	139,485	128,457	118,471	94,983
Net interest income	232,608	230,256	225,715	222,489	229,690	228,453	227,461	234,320	911,068	919,924	896,431
Provision for credit losses	6,691	6,943	5,779	5,740	6,875	5,948	11,440	6,890	25,153	31,153	18,822
Mortgage banking income	2,314	4,544	3,901	5,298	4,746	7,556	7,907	6,384
Securities (losses) gains, net	(688)	(6,715)	(218)	(99)	276	(181)	(7,336)	(405)	(7,720)	(7,646)	776
Other noninterest income	27,692	34,113	26,540	27,013	28,653	26,286	34,607	26,765
Noninterest expense	134,176	135,339	134,774	140,742	152,287	135,230	135,288	137,419	545,031	560,224	555,087
Income taxes	26,651	24,649	18,878	21,405	24,813	24,779	23,452	24,448	91,583	97,492	96,156
Net income	$ 94,408	$ 95,267	$ 96,507	$ 86,814	$ 79,390	$ 96,157	$ 92,459	$ 98,307	$ 372,996	$ 366,313	$ 379,627
Average shares outstanding (000s):
Basic	135,236,000	135,158,000	135,138,000	134,809,000	134,691	134,685	134,683	134,411	134,947,592	134,505,058	134,776,241
Diluted	135,732,000	135,505,000	135,315,000	135,121,000	134,985	134,888	134,850	134,840	135,225,417	134,753,820	135,117,512
Net income per share:
Basic	$ 0.7	$ 0.7	$ 0.71	$ 0.64	$ 0.59	$ 0.71	$ 0.68	$ 0.73	$ 2.76	$ 2.72	$ 2.81
Diluted	0.69	0.7	0.71	0.64	0.59	0.71	0.68	0.73	2.75	2.71	2.8
Dividends per share	$ 0.37	$ 0.37	$ 0.37	$ 0.37	$ 0.37	$ 0.36	$ 0.36	$ 0.36	$ 1.48	$ 1.45	$ 1.44