United Bankshares (UBSI) 10-Q 10 May 22 2022 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2022	Apr. 30, 2022
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Fiscal Year Focus	2022
Document Period End Date	Mar. 31, 2022
Document Fiscal Period Focus	Q1
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		135,292,084
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

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets
Cash and due from banks	$ 382,592	$ 282,878
Interest-bearing deposits with other banks	2,419,456	3,474,365
Federal funds sold	1,045	927
Total cash and cash equivalents	2,803,093	3,758,170
Securities available for sale at estimated fair value (amortized cost-$4,951,963 at March 31, 2022 and $4,031,494 at December 31, 2021, allowance for credit losses of $0 at March 31, 2022 and December 31, 2021)	4,760,934	4,042,699
Securities held to maturity, net of allowance for credit losses of $19 at March 31, 2022 and December 31, 2021 (estimated fair value-$1,020 at March 31, 2022 and December 31, 2021)	1,001	1,001
Equity securities at estimated fair value	12,357	12,404
Other investment securities	246,420	239,645
Loans held for sale measured using fair value option	340,040	504,416
Loans and leases	18,419,280	18,051,307
Less: Unearned income	(27,194)	(27,659)
Loans and leases, net of unearned income	18,392,086	18,023,648
Less: Allowance for loan and lease losses	(214,594)	(216,016)
Net loans and leases	18,177,492	17,807,632
Bank premises and equipment	200,167	197,220
Operating lease right-of-use assets	77,097	81,942
Goodwill	1,889,244	1,886,494
Mortgage servicing rights, net of valuation allowance of $0 at March 31, 2022 and $883 at December 31, 2021	23,089	23,144
Bank-owned life insurance ("BOLI")	479,064	478,067
Accrued interest receivable, net of allowance for credit losses of $0 at March 31, 2022 and $8 at December 31, 2021	66,528	64,512
Other assets	288,985	231,556
TOTAL ASSETS	29,365,511	29,328,902
Deposits:
Noninterest-bearing	9,006,961	8,980,547
Interest-bearing	14,467,340	14,369,716
Total deposits	23,474,301	23,350,263
Borrowings:
Securities sold under agreements to repurchase	136,370	128,844
Federal Home Loan Bank ("FHLB") borrowings	531,615	532,199
Other long-term borrowings	285,620	285,195
Reserve for lending-related commitments	36,679	31,442
Operating lease liabilities	81,678	86,703
Accrued expenses and other liabilities	224,108	195,628
TOTAL LIABILITIES	24,770,371	24,610,274
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-141,783,032 and 141,360,266 at March 31, 2022 and December 31, 2021, respectively, including 5,714,593 and 4,967,508 shares in treasury at March 31, 2022 and December 31, 2021, respectively	354,458	353,402
Surplus	3,156,101	3,149,955
Retained earnings	1,423,175	1,390,777
Accumulated other comprehensive loss	(141,692)	(4,888)
Treasury stock, at cost	(196,902)	(170,618)
TOTAL SHAREHOLDERS' EQUITY	4,595,140	4,718,628
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 29,365,511	$ 29,328,902

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Securities available for sale, amortized cost	$ 4,951,963	$ 4,031,494
Securities held to maturity	$ 19	$ 19
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		$ 2.50
Common stock, shares authorized		200,000,000
Common stock, shares issued	141,783,032	141,360,266
Common stock, shares in treasury	5,714,593	4,967,508
Allowance for credit losses on securities held for sale	$ 0	$ 0
Allowances for credit losses on securities held to maturity	1,020	1,020
Allowance for credit loss on accrued interest receivable	0	8
Mortgage servicing rights, net of valuation allowance	$ 0	$ 883

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Interest income
Interest and fees on loans	$ 180,837	$ 188,673
Interest on federal funds sold and other short-term investments	2,329	1,893
Interest and dividends on securities:
Taxable	17,505	13,526
Tax-exempt	2,124	1,565
Total interest income	202,795	205,657
Interest expense
Interest on deposits	8,561	11,985
Interest on short-term borrowings	181	178
Interest on long-term borrowings	2,551	2,534
Total interest expense	11,293	14,697
Net interest income	191,502	190,960
Provision for credit losses	(3,410)	143
Net interest income after provision for credit losses	194,912	190,817
Other income
Income from bank-owned life insurance	2,194	1,403
Mortgage loan servicing income	2,387	2,355
Net investment securities (losses) gains	(251)	2,609
Other income	1,525	2,006
Total other income	46,023	92,573
Other expense
Employee compensation	62,621	72,412
Employee benefits	12,851	15,450
Net occupancy expense	11,187	10,941
Other real estate owned ("OREO") expense	147	3,625
Equipment expense	7,335	6,044
Data processing expense	7,371	7,026
Mortgage loan servicing expense and impairment	1,643	3,177
Bankcard processing expense	424	400
FDIC insurance expense	2,673	2,000
Other expense	32,921	27,852
Total other expense	139,173	148,927
Income before income taxes	101,762	134,463
Income taxes	20,098	27,565
Net income	$ 81,664	$ 106,898
Earnings per common share:
Basic	$ 0.60	$ 0.83
Diluted	$ 0.60	$ 0.83
Average outstanding shares:
Basic	136,058,328	128,635,740
Diluted	136,435,229	128,890,861
Fees from trust services [Member]
Other income
Revenue from contract	$ 4,127	$ 3,763
Fees from brokerage services [Member]
Other income
Revenue from contract	4,552	4,323
Fees from deposit services [Member]
Other income
Revenue from contract	10,148	8,896
Bankcard fees and merchant discounts [Member]
Other income
Revenue from contract	1,379	1,064
Other service charges, commissions, and fees [Member]
Other income
Revenue from contract	759	759
Mortgage Banking [Member]
Other income
Revenue from contract	$ 19,203	$ 65,395

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 81,664	$ 106,898
Change in net unrealized loss on available for sale (AFS) securities, net of tax	(155,113)	(36,365)
Change in net unrealized gain on cash flow hedge, net of tax	17,668	14,987
Change in defined benefit pension plan, net of tax	641	869
Comprehensive (loss) income, net of tax	$ (55,140)	$ 86,389

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, 2020	$ 4,297,620	$ 334,523	$ 2,894,471	$ 1,205,395	$ 22,370	$ (159,139)
Beginning Balance, shares at Dec. 31, 2020		133,809,374,000
Net income	106,898	$ 0	0	106,898	0	0
Other comprehensive income (loss), net of tax	(20,509)	0	0	0	(20,509)	0
Total comprehensive income (loss), net of tax	86,389
Stock based compensation expense	1,688	0	1,688	0	0	0
Purchase of treasury stock	(11,210)	0	0	0	0	(11,210)
Cash dividends	(45,254)	0	0	(45,254)	0	0
Net issuance of common stock under stock-based compensation plans	3,465	$ 817	2,648	0	0	0
Net issuance of common stock under stock-based compensation plans, shares		326,522
Ending Balance at Mar. 31, 2021	4,332,698	$ 335,340	2,898,807	1,267,039	1,861	(170,349)
Ending Balance, shares at Mar. 31, 2021		134,135,896,000
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		141,360,266,000
Net income	81,664	$ 0	0	81,664	0	0
Other comprehensive income (loss), net of tax	(136,804)	0	0	0	(136,804)	0
Total comprehensive income (loss), net of tax	(55,140)
Stock based compensation expense	2,061	0	2,061	0	0	0
Stock grant forfeiture	0	0	223	0	0	(223)
Purchase of treasury stock	(26,061)	0	0	0	0	(26,061)
Cash dividends	(49,266)	0	0	(49,266)	0	0
Net issuance of common stock under stock-based compensation plans	4,918	$ 1,056	3,862	0	0	0
Net issuance of common stock under stock-based compensation plans, shares		422,766
Ending Balance at Mar. 31, 2022	$ 4,595,140	$ 354,458	$ 3,156,101	$ 1,423,175	$ (141,692)	$ (196,902)
Ending Balance, shares at Mar. 31, 2022		141,783,032

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Purchase of treasury stock, shares	740,873,000	339,229,000
Cash dividends per share	$ 0.36	$ 0.35
Stock grant forfeiture	6,212,000
Common Stock [Member]
Net issuance of common stock under stock-based compensation plans	422,766	326,522

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
OPERATING ACTIVITIES
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 283,607	$ 80,584
INVESTING ACTIVITIES
Proceeds from maturities and calls of held to maturity securities	0	215
Proceeds from sales of securities available for sale	150	39,182
Proceeds from maturities and calls of securities available for sale	151,477	230,347
Purchases of securities available for sale	(1,077,461)	(536,570)
Proceeds from sales of equity securities	149	852
Purchases of equity securities	(353)	(478)
Proceeds from sales and redemptions of other investment securities	1,295	7,178
Purchases of other investment securities	(11,591)	(8,208)
Redemption of bank-owned life insurance policies	778	0
Purchases of bank premises and equipment	(3,509)	(2,734)
Proceeds from sales of bank premises and equipment	557	2
Proceeds from sales of OREO properties	1,325	1,262
Net change in loans and leases	(366,414)	229,967
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(1,303,597)	(38,985)
FINANCING ACTIVITIES
Cash dividends paid	(46,655)	(45,447)
Acquisition of treasury stock	(26,061)	(11,210)
Proceeds from exercise of stock options	5,027	3,465
Repayment of long-term Federal Home Loan Bank borrowings	0	(550,000)
Proceeds from issuance of long-term Federal Home Loan Bank borrowings	0	500,000
Changes in:
Deposits	125,076	812,763
Federal funds purchased, securities sold under agreements to repurchase and other short-term borrowings	7,526	2,900
NET CASH PROVIDED BY FINANCING ACTIVITIES	64,913	712,471
Increase in cash and cash equivalents	(955,077)	754,070
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	3,758,170	2,209,068
CASH AND CASH EQUIVALENTS AT END OF YEAR	2,803,093	2,963,138
Noncash investing activities:
Transfers of loans to OREO	186	810
Transfers of loans to bank premises and equipment	4,541	0
Subsidiaries [Member]
Acquisition of subsidiaries:
Assets acquired, net of cash	(128)	0
Liabilities assumed	2,622	0
Goodwill	$ 2,750	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying unaudited consolidated interim financial statements of United Bankshares, Inc. and Subsidiaries (“United” or “the Company”) have been prepared in accordance with accounting principles for interim financial information generally accepted in the United States (“GAAP”) and with the instructions for Form 10-Q S-X. 10-K, The accompanying consolidated interim financial statements include the accounts of United and its wholly owned subsidiaries. United operates in two business segments: community banking and mortgage banking. All significant intercompany accounts and transactions have been eliminated in the consolidated financial statements. Information is presented in these notes to the unaudited consolidated interim financial statements with dollars expressed in thousands, except per share or unless otherwise noted. New Accounting Standards In March 2022, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2022-02, 2022-02 310-40, 2022-02 No. 2022-02 No. 2022-02 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 combination in accordance with Topic 606. As a result of these amendments, it is expected that an acquirer 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 No. 2021-08 In July 2021, the FASB issued ASU No. 2021-05, 842-10-25-2 25-3, 842-10-24-3A, No. 2021-05 2021-05 No. 2021-05 In January 2021, the FASB issued ASU No. 2021-01, No. 2020-04, No. 2021-01 In August 2020, the FASB issued No. 2020-06, 470-20) 815-40).” earnings-per-share No. 2020-06 No. 2020-06 In March 2020, the FASB issued ASU No. 2020-04, No. 2020-04 No. 2021-01

Mergers and Acquisitions

Mergers and Acquisitions	3 Months Ended
	Mar. 31, 2022
Business Combinations [Abstract]
Mergers and Acquisitions	2. MERGERS AND ACQUISITIONS On December 3, 2021 (the “Acquisition Date”), Under the terms of the Agreement, each outstanding share of common stock of Community Bankers Trust was converted into the right to receive 0.3173 shares of United common stock, par value $2.50 per share. Also, pursuant to the Agreement, at the effective time of the Merger, each outstanding Community Bankers Trust stock option granted under a Community Bankers Trust stock plan, whether vested or unvested as of the date of the Merger, vested as provided pursuant to the terms of such Community Bankers Trust stock plan and converted into an option to acquire United common stock adjusted based on the 0.3173 exchange ratio. Also, at the effective time of the Merger, each restricted stock unit granted under a Community Bankers Trust stock plan that was outstanding immediately prior to the effective time of the Merger vested in accordance with the formula and other terms of the Community Bankers Trust stock plan and converted into the right to receive shares of United common stock based on the 0.3173 exchange ratio. Immediately following the Merger, Essex Bank, a wholly-owned subsidiary of Community Bankers Trust, merged with and into United Bank, a wholly-owned subsidiary of United (the “Bank Merger”) pursuant to an Agreement and Plan of Merger, dated June 2, 2021. United Bank survived the Bank Merger and continues to exist as a Virginia banking corporation. The Mid-Atlantic The aggregate purchase price was $260,304, including common stock valued at $252,321, stock options assumed valued at $7,958, and cash paid for fractional shares of $25. The number of shares issued in the transaction was 7,135,771, which were valued based on the closing market price of $35.36 for United’s common shares on December 3, 2021. The preliminary purchase price has been allocated to the identifiable tangible and intangible assets resulting in preliminary additions to goodwill and core deposit intangibles of $79,204 and $3,398, respectively. The goodwill recognized results from the expected synergies and potential earnings from the combination of United and Community Bankers Trust. The core deposit intangible is expected to be amortized on an accelerated basis over ten years. Because the consideration paid was greater than the net fair value of the acquired assets and liabilities, the Company recorded goodwill as part of the acquisition. None of the goodwill from the Community Bankers Trust acquisition is expected to be deductible for tax purposes. United used an independent third party to help determine the fair values of the assets and liabilities acquired from Community Bankers Trust. As a result of the merger, United recorded preliminary fair value discounts of $7,744 on the loans and leases acquired, $230 on land acquired, $50 on OREO properties acquired and $415 on a trust preferred issuance, and premiums of $6,766 on investment securities acquired, $492 on buildings acquired, $2,741 on interest-bearing deposits, and $457 on long-term FHLB advances, respectively. United also recorded an allowance for credit losses, including a reserve for unfunded commitments, of $25,920 on the loans and commitments acquired split between $12,788 for purchased credit deteriorated (“PCD”) loans which is part of the acquisition date fair value, and $13,132 for non-PCD year-end. Portfolio loans and leases acquired from Community Bankers Trust were recorded at their fair value at the Acquisition Date based on a discounted cash flow methodology. The estimated fair value incorporates adjustments related to market loss assumptions and prevailing market interest rates for comparable assets and other market factors such as liquidity from the perspective of a market participant. Also, acquired portfolio loans and leases were evaluated upon acquisition and classified as either PCD, which indicates that the loan has experienced a more-than-insignificant deterioration in credit quality since origination, or non-PCD. the non-PCD non-PCD non-PCD The following table provides a reconciliation of the difference between the purchase price and the par value of portfolio PCD loans and leases acquired from Community Bankers Trust as of the Acquisition Date: Purchase price of PCD loans and leases at acquisition $ 360,638 Allowance for credit losses at acquisition 12,629 Non-credit 3,559 Par value (UPB) of acquired PCD loans and leases at acquisition $ 376,826 The consideration paid for Community Bankers Trust’s common equity and the preliminary amounts of acquired identifiable assets and liabilities assumed as of the Acquisition Date were as follows: Purchase price: Value of common shares issued (7,135,771 shares) $ 252,321 Fair value of stock options assumed 7,958 Cash for fractional shares 25 Total purchase price 260,304 Identifiable assets: Cash and cash equivalents 39,445 Investment securities 395,249 Net loans and leases 1,280,016 Premises and equipment 25,857 Operating lease right-of-use 8,127 Core deposit intangible 3,398 Other assets 51,069 Total identifiable assets $ 1,803,161 Identifiable liabilities: Deposits $ 1,520,243 Short-term borrowings 26,755 Long-term borrowings 51,500 Operating lease liability 8,127 Other liabilities 15,436 Total identifiable liabilities 1,622,061 Preliminary fair value of net assets acquired including identifiable intangible assets 181,100 Preliminary resulting goodwill $ 79,204 The operating results of United include operating results of acquired assets and assumed liabilities subsequent to the Acquisition Date. The operations of United’s central region of Virginia, which includes most of the acquired operations of Community Bankers Trust provided $9,805 in total revenues (net interest income plus other income), and $6,096 in net income for the first three months ended March 31, 2022. These amounts are included in United’s consolidated financial statements as of and for the first three months ended The following table presents certain unaudited pro forma information for the results of operations for the first three months of 2021, as if the Merger had occurred on January 1, 2021. These results combine the historical results of Community Bankers Trust into United’s consolidated statement of income and, while certain adjustments were made for the estimated impact of certain fair valuation adjustments and other acquisition-related activity, they are not indicative of what would have occurred had the acquisition taken place on the indicated date nor are they intended to represent or be indicative of future results of operations. In particular, no adjustments have been made to eliminate the amount of Community Bankers Trust’s provision for credit losses for the first three months of 2021 that may not have been necessary had the acquired loans and leases been recorded at fair value as of the beginning of 2021. Additionally, United expects to achieve operating cost savings and other business synergies as a result of the acquisition which are not reflected in the pro forma amounts. Proforma Three Months Ended March 31, 2021 Total Revenues (1) $ 301,478 Net Income 115,211 (1) Represents net interest income plus other income

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Investment Securities	3. INVESTMENT SECURITIES 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, estimated fair values, and allowance for credit losses of securities available for sale are summarized as follows. March 31, 2022 Amortized Gross Gross Allowance Estimated U.S. $ 377,085 $ 0 $ 5,693 $ 0 $ 371,392 State and political subdivisions 838,384 1,199 44,071 0 795,512 Residential mortgage-backed securities Agency 1,472,822 1,002 84,289 0 1,389,535 Non-agency 103,779 103 3,785 0 100,097 Commercial mortgage-backed securities Agency 653,526 1,121 27,479 0 627,168 Asset-backed securities 856,840 19 12,860 0 843,999 Single issue trust preferred securities 17,304 141 776 0 16,669 Other corporate securities 632,223 967 16,628 0 616,562 Total $ 4,951,963 $ 4,552 $ 195,581 $ 0 $ 4,760,934 December 31, 2021 Amortized Gross Gross Allowance Estimated U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 82,136 $ 51 $ 337 $ 0 $ 81,850 State and political subdivisions 831,499 19,608 3,809 0 847,298 Residential mortgage-backed securities Agency 1,120,423 9,173 15,822 0 1,113,774 Non-agency 74,965 306 726 0 74,545 Commercial mortgage-backed securities Agency 633,802 12,731 6,608 0 639,925 Asset-backed securities 659,830 49 3,307 0 656,572 Single issue trust preferred securities 17,291 146 626 0 16,811 Other corporate securities 611,548 3,558 3,182 0 611,924 Total $ 4,031,494 $ 45,622 $ 34,417 $ 0 $ 4,042,699 United excludes available-for-sale Available-for-sale non-accrual non-accrual available-for-sale The following is a summary of securities available for sale which were in an unrealized loss position at March 31, 2022 and December 31, 2021. Less than 12 months 12 months or longer Total Fair Unrealized Fair Unrealized Fair Unrealized March 31, 2022 U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 371,210 $ 5,690 $ 182 $ 3 $ 371,392 $ 5,693 State and political subdivisions 654,992 38,224 41,938 5,847 696,930 44,071 Residential mortgage-backed securities Agency 1,102,349 62,008 192,698 22,281 1,295,047 84,289 Non-agency 75,230 3,785 0 0 75,230 3,785 Commercial mortgage-backed securities Agency 327,316 14,407 97,085 13,072 424,401 27,479 Asset-backed securities 757,203 11,156 78,736 1,704 835,939 12,860 Single issue trust preferred securities 0 0 13,452 776 13,452 776 Other corporate securities 392,778 15,693 22,754 935 415,532 16,628 Total $ 3,681,078 $ 150,963 $ 446,845 $ 44,618 $ 4,127,923 $ 195,581 Less than 12 months 12 months or longer Total Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2021 U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 75,106 $ 334 $ 213 $ 3 $ 75,319 $ 337 State and political subdivisions 223,754 2,872 24,067 937 247,821 3,809 Residential mortgage-backed securities Agency 680,320 13,167 71,392 2,655 751,712 15,822 Non-agency 55,336 726 0 0 55,336 726 Commercial mortgage-backed securities Agency 136,071 2,912 70,543 3,696 206,614 6,608 Asset-backed securities 532,373 2,620 82,222 687 614,595 3,307 Single issue trust preferred securities 0 0 13,594 626 13,594 626 Other corporate securities 307,912 3,182 0 0 307,912 3,182 Total $ 2,010,872 $ 25,813 $ 262,031 $ 8,604 $ 2,272,903 $ 34,417 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. Three Months Ended March 31 2022 2021 Proceeds from sales and calls $ 151,627 $ 269,529 Gross realized gains 0 1,542 Gross realized losses 0 98 At March 31, 2022, gross unrealized losses on available for sale securities were $195,581 on 1,174 securities of a total portfolio of 1,546 available for sale securities. Securities with the most significant gross unrealized losses at March 31, 2022 consisted primarily of agency residential mortgage-backed securities and agency commercial mortgage-backed 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 March 31, 2022 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 $838,384 at March 31, 2022. As of March 31, 2022, approximately 53% 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 March 31, 2022. 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 March 31, 2022. Agency mortgage-backed securities 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 $2,126,348 at March 31, 2022. Of the $2,126,348 amount, $653,526 was related to agency commercial mortgage-backed securities and $1,472,822 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 March , . Non-agency United’s non-agency non-agency non-agency Asset-backed securities As of March 31, 2022, United’s asset-backed securities portfolio had a total amortized cost balance of $856,840. 100% of the portfolio was investment grade rated as of March 31, 2022. Approximately 35% 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 65% of the portfolio relates to collateralized loan obligation securities that are all AAA rated. Upon reviewing this portfolio for the first quarter of 2022, 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 March 31, 2022 consisted of $8,458 in investment grade bonds, $3,075 in split rated bonds, and $5,771 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 first quarter of 2022, it was determined that none of the single issue trust preferred securities had credit losses. Corporate securities As of March 31, 2022, United’s Corporate securities portfolio had a total amortized cost balance of $632,223. The majority of the portfolio consisted of debt issuances of corporations representing a variety of industries, including financial institutions. Of the $632,223 total amortized cost balance, 81% was investment grade rated, 1% was below investment grade rated, 1% was split rated, and 17% was unrated. For 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 corporate securities had credit losses at March 31, 2022. The amortized cost and estimated fair value of securities available for sale at March 31, 2022 and December 31, 2021 by contractual maturity are shown as follows. Expected maturities may differ from contractual maturities because the issuers may have the right to call or prepay obligations without penalties. March 31, 2022 December 31, 2021 Amortized Estimated Amortized Estimated Due in one year or less $ 197,154 $ 197,158 $ 126,032 $ 126,564 Due after one year through five years 862,425 852,043 661,627 670,298 Due after five years through ten years 1,009,895 958,958 940,031 941,640 Due after ten years 2,882,489 2,752,775 2,303,804 2,304,197 Total $ 4,951,963 $ 4,760,934 $ 4,031,494 $ 4,042,699 Equity securities at fair value Equity securities consist mainly of equity securities of financial institutions and mutual funds 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 $12,357 at March 31, 2022 and $12,404 at December 31, 2021. Three Months Ended 2022 2021 Net gains recognized during the period on equity securities sold $ 0 $ 788 Unrealized gains recognized during the period on equity securities still held at period end 19 27 Unrealized losses recognized during the period on equity securities still held at period end (270 ) (105 ) Net (losses) gains recognized during the period $ (251 ) $ 710 Other investment securities During the first quarter of 2022, United evaluated all of its cost method investments to determine if certain events or changes in circumstances during the first quarter of 2022 had a significant adverse effect on the fair value of any of its cost method securities. United determined that there was no individual security that experienced an adverse event during the first quarter. There were no other events or changes in circumstances during the first quarter which would have an adverse effect on the 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 $1,794,895 and $1,871,328 at March 31, 2022 and December 31, 2021, respectively.

Loans and Leases

Loans and Leases	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
LOANS AND LEASES	4. LOANS AND LEASES Major classes of loans and leases are as follows: March 31, 2022 December 31, 2021 Commercial, financial and agricultural: Owner-occupied commercial real estate $ 1,697,910 $ 1,733,176 Nonowner-occupied commercial real estate 6,047,856 5,957,288 Other commercial 3,533,910 3,462,361 Total commercial, financial & agricultural 11,279,676 11,152,825 Residential real estate 3,705,535 3,691,560 Construction & land development 2,186,126 2,014,165 Consumer: Bankcard 8,398 8,913 Other consumer 1,239,545 1,183,844 Less: Unearned income (27,194 ) (27,659 ) Total gross loans $ 18,392,086 $ 18,023,648 The table above does not include loans held for sale of $340,040 and $504,416 at March 31, 2022 and December 31, 2021, respectively. Loans held for sale consist of single-family residential real estate loans originated for sale in the secondary market. United’s subsidiary bank has made loans to the directors and officers of United and its subsidiaries, and to their affiliates. The aggregate dollar amount of these loans was $ and $ at March 31, 2022 and December 31, 2021, respectively.

Credit Quality

Credit Quality	3 Months Ended
	Mar. 31, 2022
Text Block [Abstract]
Credit Quality	5. CREDIT QUALITY 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 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. Generally, a loan is categorized as a TDR if a concession is granted and there is deterioration in the financial condition of the borrower. The portfolio of TDR loans is monitored monthly. A loan is categorized as a troubled debt restructuring (“TDR”) if a concession is granted and there is deterioration in the financial condition of the borrower. A loan classified as a TDR will generally retain such classification until the loan is paid in full. However, a one-to-four-family In response to the coronavirus (“COVID-19”) COVID-19 As of March 31, 2022, United had TDRs of $30,582 as compared to $35,856 as of December 31, 2021. Of the $30,582 aggregate balance of TDRs at March 31, 2022, $13,568 was on nonaccrual and $4,882 was 30-89 past due. All these amounts are included in the appropriate categories in the “Age Analysis of Past Due Loans” table on a subsequent page. As of March 31, 2022, there was a commitment to lend additional funds of $49 to a debtor owing a receivable whose terms have been modified in a TDR. During the first three months of 2022, advances of $61 were made to this debtor under a loan that had been previously modified. The following tables sets forth the balances of TDRs at March 31, 2022 and December 31, 2021 and the reasons for modification: Reason for modification March 31, 2022 December 31, 2021 Interest rate reduction $ 2,214 $ 3,163 Interest rate reduction and change in terms 1,265 1,412 Concession of principal and term 18 19 Extended maturity 4,990 4,831 Transfer of asset 0 5,407 Change in terms 22,095 21,024 Total $ 30,582 $ 35,856 The following table sets forth United’s troubled debt restructurings that were restructured during the three months ended March 31, 2022 and 2021, segregated by class of loans. Troubled Debt Restructurings March 31, 2022 March 31, 2021 Number of Pre- Post- Number of Pre- Post- Commercial real estate: Owner-occupied 1 $ 2,801 $ 2,788 1 $ 940 $ 922 Nonowner-occupied 0 0 0 1 937 937 Other commercial 0 0 0 0 0 0 Residential real estate 0 0 0 0 0 0 Construction & land development 0 0 0 0 0 0 Consumer: Bankcard 0 0 0 0 0 0 Other consumer 0 0 0 0 0 0 Total 1 $ 2,801 $ 2,788 2 $ 1,877 $ 1,859 The following table sets forth United’s troubled debt restructurings, based on their post-modification outstanding recorded balance, that have been restructured during the three months ended March 31, 2022 and 2021, segregated by the reason for modification: Three Months Ended Reason for modification March 31, March 31, Interest rate reduction $ 0 $ 0 Interest rate reduction and change in terms 0 0 Forgiveness of principal 0 0 Concession of principal and term 0 0 Transfer of asset 0 0 Extended maturity 0 0 Change in terms 2,788 1,859 Total $ 2,788 $ 1,859 The loans and leases were evaluated individually for allocation within United’s allowance for loan losses. The modifications had an immaterial impact on the financial condition and results of operations for United. The following table presents troubled debt restructurings, by class of loan, that were restructured during the twelve-month period ended March 31, 2022 and March 31, 2021 and had charge-offs during the the first quarter of 2022 and 2021, respectively. The recorded investment amounts presented were as of the March 31, 2022 and 2021 balance sheet dates. Three Months Ended March 31, 2022 Three Months Ended March 31, 2021 Number of Recorded Number of Recorded Troubled Debt Restructurings Commercial real estate: Owner-occupied 0 $ 0 0 $ 0 Nonowner-occupied 0 0 0 0 Other commercial 1 114 0 0 Residential real estate 0 0 0 0 Construction & land development 0 0 2 550 Consumer: Bankcard 0 0 0 0 Other consumer 0 0 0 0 Total 1 $ 114 2 $ 550 The following table sets forth United’s age analysis of its past due loans and leases, segregated by class of loans: Age Analysis of Past Due Loans and Leases 30-89 Days 90 Days or Total Past Current & Total Financing 90 Days or Commercial real estate: Owner-occupied $ 8,569 $ 12,190 $ 20,759 $ 1,677,151 $ 1,697,910 $ 271 Nonowner-occupied 7,984 10,590 18,574 6,029,282 6,047,856 0 Other commercial 30,964 14,722 45,686 3,488,224 3,533,910 6,326 Residential real estate 21,196 19,588 40,784 3,664,751 3,705,535 6,365 Construction & land development 2,806 3,420 6,226 2,179,900 2,186,126 533 Consumer: Bankcard 124 79 203 8,195 8,398 79 Other consumer 17,979 2,251 20,230 1,219,315 1,239,545 1,605 Total $ 89,622 $ 62,840 $ 152,462 $ 18,266,818 $ 18,419,280 $ 15,179 Age Analysis of Past Due Loans and Leases 30-89 Days 90 Days or Total Past Current & Total Financing 90 Days or Commercial real estate: Owner-occupied $ 7,522 $ 13,325 $ 20,847 $ 1,712,329 $ 1,733,176 $ 611 Nonowner-occupied 5,791 18,829 24,620 5,932,668 5,957,288 545 Other commercial 21,444 15,883 37,327 3,425,034 3,462,361 6,569 Residential real estate 19,488 23,495 42,983 3,648,577 3,691,560 8,241 Construction & land development 6,599 3,096 9,695 2,004,470 2,014,165 383 Consumer: Bankcard 100 187 287 8,626 8,913 187 Other consumer 17,264 2,615 19,879 1,163,965 1,183,844 2,445 Total $ 78,208 $ 77,430 $ 155,638 $ 17,895,669 $ 18,051,307 $ 18,981 The following table sets forth United’s nonaccrual loans and leases, segregated by class of loans: At March 31, 2022 At December 31, 2021 Nonaccruals With No 90 Days or Nonaccruals With No 90 Days or Commercial Real Estate: Owner-occupied $ 11,919 $ 11,919 $ 271 $ 12,714 $ 12,714 $ 611 Nonowner-occupied 10,590 7,452 0 18,284 18,284 545 Other Commercial 8,396 7,333 6,326 9,314 8,261 6,569 Residential Real Estate 13,223 11,793 6,365 15,254 14,298 8,241 Construction 2,887 2,887 533 2,713 2,713 383 Consumer: Bankcard 0 0 79 0 0 187 Other consumer 646 646 1,605 170 170 2,445 Total $ 47,661 $ 42,030 $ 15,179 $ 58,449 $ 56,440 $ 18,981 No interest income was recognized on United’s nonaccrual loans and leases for the first three months of 2022 and 2021. For the adoption of ASC Topic 326, 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 March 31, 2022 and December 31, 2021: Collateral Dependent Loans and Leases At March 31, 2022 Residential Business Land Commercial Other Total Commercial real estate: Owner-occupied $ 0 $ 30 $ 0 $ 9,490 $ 10,194 $ 19,714 Nonowner-occupied 7,069 0 0 7,990 46,847 61,906 Other commercial 2,093 11,860 0 0 1,100 15,053 Residential real estate 16,386 0 0 0 0 16,386 Construction & land development 0 0 3,288 0 2,397 5,685 Consumer: Bankcard 0 0 0 0 0 0 Other consumer 0 0 0 0 0 0 Total $ 25,548 $ 11,890 $ 3,288 $ 17,480 $ 60,538 $ 118,744 Collateral Dependent Loans and Leases At December 31, 2021 Residential Business Land Commercial Other Total Commercial real estate: Owner-occupied $ 0 $ 38 $ 0 $ 9,775 $ 11,223 $ 21,036 Nonowner-occupied 7,085 0 703 8,665 52,299 68,752 Other commercial 2,093 15,225 0 0 732 18,050 Residential real estate 16,749 0 0 0 0 16,749 Construction & land development 0 0 4,770 0 1,103 5,873 Consumer: Bankcard 0 0 0 0 0 0 Other consumer 0 0 0 0 0 0 Total $ 25,927 $ 15,263 $ 5,473 $ 18,440 $ 65,357 $ 130,460 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 or greater) and classified (substandard-rated and worse in the amount of $500 and greater) loans is completed once per quarter. Review of notes with committed exposure of $2,000 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 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 by class of loans is as follows: Commercial Real Estate – Owner-occupied Term Loans Origination Year Revolving loans Revolving loans converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 53,351 $ 343,436 $ 294,872 $ 150,285 $ 130,636 $ 638,377 $ 36,446 $ 389 $ 1,647,792 Special Mention 0 0 0 129 2,976 20,651 950 0 24,706 Substandard 0 0 51 30 657 24,132 0 244 25,114 Doubtful 0 0 0 0 0 298 0 0 298 Total $ 53,351 $ 343,436 $ 294,923 $ 150,444 $ 134,269 $ 683,458 $ 37,396 $ 633 $ 1,697,910 Current-period charge-offs 0 0 0 0 0 (31 ) 0 0 (31 ) Current-period recoveries 0 0 0 0 0 6 0 0 6 Current-period net charge-offs $ 0 $ 0 $ 0 $ 0 $ 0 $ (25 ) $ 0 $ 0 $ (25 ) Term Loans Origination Year Revolving loans Revolving loans and leases converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 319,007 $ 310,893 $ 161,075 $ 135,472 $ 168,874 $ 539,640 $ 39,117 $ 401 $ 1,674,479 Special Mention 0 0 51 5,399 712 20,672 959 0 27,793 Substandard 0 55 38 661 1,304 27,458 839 244 30,599 Doubtful 0 0 0 0 0 305 0 0 305 Total $ 319,007 $ 310,948 $ 161,164 $ 141,532 $ 170,890 $ 588,075 $ 40,915 $ 645 $ 1,733,176 YTD charge-offs 0 0 0 0 (44 ) (370 ) 0 0 (414 ) YTD recoveries 0 0 0 0 13 856 0 0 869 YTD net charge-offs $ 0 $ 0 $ 0 $ 0 $ (31 ) $ 486 $ 0 $ 0 $ 455 Commercial Real Estate – Nonowner-occupied Term Loans Origination Year Revolving loans Revolving loans converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 363,243 $ 1,636,772 $ 865,579 $ 641,763 $ 439,994 $ 1,704,382 $ 111,896 $ 160 $ 5,763,789 Special Mention 634 0 2,934 83,137 5,762 32,705 0 0 125,172 Substandard 0 0 709 34,079 28,325 95,782 0 0 158,895 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 363,877 $ 1,636,772 $ 869,222 $ 758,979 $ 474,081 $ 1,832,869 $ 111,896 $ 160 $ 6,047,856 Current-period charge-offs 0 0 0 0 0 0 0 0 0 Current-period recoveries 0 0 0 0 0 75 0 0 75 Current-period net charge-offs $ 0 $ 0 $ 0 $ 0 $ 0 $ 75 $ 0 $ 0 $ 75 Term Loans Origination Year Revolving loans Revolving loans and converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 1,558,474 $ 925,508 $ 707,570 $ 460,660 $ 397,003 $ 1,490,548 $ 102,561 $ 2,039 $ 5,644,363 Special Mention 819 2,953 113,655 5,826 372 40,534 2,793 0 166,952 Substandard 0 714 13,042 28,411 1,095 102,711 0 0 145,973 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 1,559,293 $ 929,175 $ 834,267 $ 494,897 $ 398,470 $ 1,633,793 $ 105,354 $ 2,039 $ 5,957,288 YTD charge-offs 0 0 0 0 0 (3,531 ) 0 0 (3,531 ) YTD recoveries 0 0 0 0 0 1,907 0 0 1,097 YTD net charge-offs $ 0 $ 0 $ 0 $ 0 $ 0 $ (1,624 ) $ 0 $ 0 $ (1,624 ) Other commercial Term Loans and leases Origination Year Revolving loans Revolving loans and leases converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 372,103 $ 833,601 $ 483,501 $ 280,431 $ 98,020 $ 253,471 $ 1,013,277 $ 1,935 $ 3,336,339 Special Mention 15,000 3,428 0 1,056 2,908 30,114 76,935 55 129,496 Substandard 261 775 207 1,400 4,571 19,194 41,502 165 68,075 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 387,364 $ 837,804 $ 483,708 $ 282,887 $ 105,499 $ 302,779 $ 1,131,714 $ 2,155 $ 3,533,910 Current-period charge-offs 0 (5 ) 0 0 (9 ) (259 ) 0 0 (273 ) Current-period recoveries 0 0 0 2 705 1,442 0 0 2,149 Current-period net charge-offs $ 0 $ (5 ) $ 0 $ 2 $ 696 $ 1,183 $ 0 $ 0 $ 1,876 Term Loans and leases Origination Year Revolving loans Revolving loans and leases converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 924,726 $ 557,422 $ 306,945 $ 107,426 $ 87,090 $ 76,032 $ 1,211,865 $ 2,038 $ 3,273,544 Special Mention 1,880 0 31,614 3,012 1,801 3,390 76,987 61 118,745 Substandard 793 11 1,561 4,930 2,146 18,963 41,357 205 69,966 Doubtful 0 0 0 0 0 106 0 0 106 Total $ 927,399 $ 557,433 $ 340,120 $ 115,368 $ 91,037 $ 98,491 $ 1,330,209 $ 2,304 $ 3,462,361 YTD charge-offs 0 (87 ) (31 ) (200 ) (174 ) (5,650 ) (40 ) 0 (6,182 ) YTD recoveries 0 3 30 86 34 4,154 0 0 4,307 YTD net charge-offs $ 0 $ (84 ) $ (1 ) $ (114 ) $ (140 ) $ (1,496 ) $ (40 ) $ 0 $ (1,875 ) Residential Real Estate Term Loans Origination Year Revolving loans cost basis Revolving loans converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 117,042 $ 877,631 $ 528,389 $ 350,569 $ 284,900 $ 1,070,761 $ 440,663 $ 2,932 $ 3,672,887 Special Mention 0 0 0 0 220 5,246 2,206 0 7,672 Substandard 0 2,689 68 554 802 19,327 1,536 0 24,976 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 117,042 $ 880,320 $ 528,457 $ 351,123 $ 285,922 $ 1,095,334 $ 444,405 $ 2,932 $ 3,705,535 Current-period charge-offs 0 0 0 0 (224 ) (270 ) 0 0 (494 ) Current-period recoveries 0 0 0 0 2 878 0 0 880 Current-period net charge-offs $ 0 $ 0 $ 0 $ 0 $ (222 ) $ 608 $ 0 $ 0 $ 386 Term Loans Origination Year Revolving loans Revolving loans converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 815,693 $ 568,323 $ 383,250 $ 315,211 $ 178,101 $ 931,730 $ 455,705 $ 2,972 $ 3,650,985 Special Mention 0 0 0 223 91 12,251 2,339 0 14,904 Substandard 464 0 444 617 2,763 19,773 1,497 113 25,671 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 816,157 $ 568,323 $ 383,694 $ 316,051 $ 180,955 $ 963,754 $ 459,541 $ 3,085 $ 3,691,560 YTD charge-offs 0 0 (37 ) (38 ) (167 ) (5,774 ) 0 0 (6,016 ) YTD recoveries 0 0 0 0 3 2,384 13 0 2,400 YTD net charge-offs $ 0 $ 0 $ (37 ) $ (38 ) $ (164 ) $ (3,390 ) $ 13 $ 0 $ (3,616 ) Construction and Land Development Term Loans Origination Year Revolving loans Revolving loans converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 78,543 $ 866,127 $ 516,349 $ 261,445 $ 150,981 $ 91,506 $ 208,309 $ 0 $ 2,173,260 Special Mention 0 0 68 3,260 0 1,225 991 0 5,544 Substandard 0 304 0 341 917 5,354 406 0 7,322 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 78,543 $ 866,431 $ 516,417 $ 265,046 $ 151,898 $ 98,085 $ 209,706 $ 0 $ 2,186,126 Current-period charge-offs 0 0 0 0 0 (2 ) 0 0 (2 ) Current-period recoveries 0 0 0 0 0 184 0 0 184 Current-period net charge-offs $ 0 $ 0 $ 0 $ 0 $ 0 $ 182 $ 0 $ 0 $ 182 Term Loans Origination Year Revolving loans Revolving loans converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 767,351 $ 518,291 $ 278,020 $ 152,062 $ 18,371 $ 74,532 $ 192,421 $ 0 $ 2,001,048 Special Mention 0 69 3,261 0 0 1,237 995 0 5,562 Substandard 332 0 280 925 0 5,272 746 0 7,555 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 767,683 $ 518,360 $ 281,561 $ 152,987 $ 18,371 $ 81,041 $ 194,162 $ 0 $ 2,014,165 YTD charge-offs 0 0 0 0 (177 ) (383 ) 0 0 (560 ) YTD recoveries 0 0 0 0 133 471 0 0 604 YTD net charge-offs $ 0 $ 0 $ 0 $ 0 $ (44 ) $ 88 $ 0 $ 0 $ 44 Bankcard Term Loans Origination Year Revolving loans Revolving loans converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 8,194 $ 0 $ 8,194 Special Mention 0 0 0 0 0 0 124 0 124 Substandard 0 0 0 0 0 0 80 0 80 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 8,398 $ 0 $ 8,398 Current-period charge-offs 0 0 0 0 0 0 (143 ) 0 (143 ) Current-period recoveries 0 0 0 0 0 0 1 0 1 Current-period net charge-offs $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ (142 ) $ 0 $ (142 ) Term Loans Origination Year Revolving loans Revolving loans converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 8,626 $ 0 $ 8,626 Special Mention 0 0 0 0 0 0 100 0 100 Substandard 0 0 0 0 0 0 187 0 187 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 8,913 $ 0 $ 8,913 YTD charge-offs 0 0 0 0 0 0 (190 ) 0 (190 ) YTD recoveries 0 0 0 0 0 42 0 42 YTD net charge-offs $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ (148 ) $ 0 $ (148 ) Other Consumer Term Loans Origination Year Revolving loans Revolving loans converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 197,844 $ 458,116 $ 264,408 $ 204,698 $ 102,665 $ 8,512 $ 3,284 $ 0 $ 1,239,527 Special Mention 0 0 0 2 0 9 7 0 18 Substandard 0 0 0 0 0 0 0 0 0 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 197,844 $ 458,116 $ 264,408 $ 204,700 $ 102,665 $ 8,521 $ 3,291 $ 0 $ 1,239,545 Current-period charge-offs 0 (135 ) (181 ) (117 ) (47 ) (52 ) (1 ) 0 (533 ) Current-period recoveries 0 1 19 46 26 69 0 0 161 Current-period net charge-offs $ 0 $ (134 ) $ (162 ) $ (71 ) $ (21 ) $ 17 $ (1 ) $ 0 $ (372 ) Term Loans Origination Year Revolving loans Revolving loans converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 479,933 $ 299,582 $ 237,742 $ 121,924 $ 30,288 $ 10,878 $ 3,475 $ 0 $ 1,183,822 Special Mention 0 0 2 1 0 10 8 0 21 Substandard 0 1 0 0 0 0 0 0 1 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 479,933 $ 299,583 $ 237,744 $ 121,925 $ 30,288 $ 10,888 $ 3,483 $ 0 $ 1,183,844 YTD charge-offs (101 ) (776 ) (709 ) (483 ) (126 ) (203 ) (6 ) 0 (2,404 ) YTD recoveries 5 86 51 101 18 186 2 0 449 YTD net charge-offs $ (96 ) $ (690 ) $ (658 ) $ (382 ) $ (108 ) $ (17 ) $ (4 ) $ 0 $ (1,955 ) At March 31, 2022 and December 31, 2021, other real estate owned (“OREO”) included in other assets in the Consolidated Balance Sheets was $13,641 and $14,823, respectively. OREO consists of real estate acquired in foreclosure or other settlement of loans. Such assets are carried at the lower of the investment in the assets or the fair value of the assets less estimated selling costs. Any adjustment to the fair value at the date of transfer is charged against the allowance for loan losses. Any subsequent valuation adjustments as well as any costs relating to operating, holding or disposing of the property are recorded in other expense in the period incurred. At March 31, 2022, there were no consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process as compared to $13 at December 31, 2021.

Allowance for Credit Losses

Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Allowance for Credit Losses	6. ALLOWANCE FOR CREDIT LOSSES United adopted the CECL methodology for measuring credit losses as of January 1, 2020. All disclosures as of March 31, 2022 and December 31, 2021 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 $48,764 (no allowance for credit losses) and $49,029 (net of an allowance for credit losses of $8) at March 31, 2022 and December 31, 2021, respectively, related to loans and leases are included separately in “Accrued interest receivable” in the consolidated balance sheets. Due to loan interest payment deferrals granted by United under the CARES Act, United assessed the collectability of the accrued interest receivables on these deferring loans and leases. As a result of this assessment, United did not record losses for accrued interest receivables not expected to be collected as of March 31, 2022 as compared to an allowance for credit losses of $8 as of December 31, 2021. For all classes of loans and leases receivable, the accrual of interest is discontinued when the contractual payment of principal or interest has The following table represents the accrued interest receivable as of March 31, 2022 and December 31, 2021: Accrued Interest Receivable At March 31, 2022 At December 31, 2021 Commercial Real Estate: Owner-occupied $ 3,742 $ 4,172 Nonowner-occupied 17,305 14,901 Other Commercial 8,544 9,335 Residential Real Estate 9,205 10,347 Construction 7,337 7,411 Consumer: Bankcard 0 0 Other consumer 2,631 2,871 $ 48,764 $ 49,037 Less: Allowance for credit losses (0 ) (8 ) Total $ 48,764 $ 49,029 The following table represents the accrued interest receivables written off by reversing interest income for the three months ended March 31, 2022 and 2021: Accrued Interest Receivables Written Off Three Months Ended March 31 2022 2021 Commercial Real Estate: Owner-occupied $ 0 $ 1 Nonowner-occupied 0 36 Other Commercial 1 6 Residential Real Estate 20 28 Construction 0 0 Consumer: Bankcard 0 0 Other consumer 67 64 Total $ 88 $ 135 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 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 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) • Commercial Real Estate Owner-Occupied • Commercial Real Estate Nonowner-Occupied • Commercial Other • Method: Cohort • Residential Real Estate • Construction & Land Development • Consumer • 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 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 either of the following applies: management has a reasonable expectation at the reporting date that a troubled debt restructuring will be executed with an individual borrower or 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 United maintains an allowance for loan losses and a reserve for lending-related commitments such as unfunded loan commitments and letters of credit. The reserve for lending-related commitments of $36,679 and $31,442 at March 31, 2022 and December 31, 2021, 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. As of March 31, 2022, the allowance for credit losses decreased from December 31, 2021 primarily due to better performance trends within the loan portfolio. 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. 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. The first quarter of 2022 qualitative adjustments include analyses of the following: • Past events • Current conditions • Reasonable and supportable forecasts portfolio-by-portfolio • The forecast for real GDP shifted downward in the first quarter, from a projection of 4.00% for 2022 at the end of 2021 to 2.80% for 2022 with a more level downward future trendline as compared to the end of 2021. The unemployment rate remained fairly consistent to the end of 2021 with a steady trend expected throughout 2022 and 2023. • Greater risk of loss is probable in the hotel and accommodations portfolio due to weakened economic conditions brought on by the pandemic and labor shortages which resulted in a more negative forecast relative to other portfolios and a longer projected recovery period to extend into late 2023 or 2024. • Reversion to historical loss data occurs via a straight-line method during the year following the one-year A progression of the allowance for loan and lease 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 Three Months Ended March 31, 2022 Commercial Real Estate Other Residential Construction & Land Bankcard Other Allowance Total Owner- Nonowner- Allowance for Loan and Lease Losses: Beginning balance $ 14,443 $ 42,156 $ 78,432 $ 26,404 $ 39,395 $ 317 $ 14,869 $ 0 $ 216,016 Charge-offs (31 ) (0 ) (273 ) (494 ) (2 ) (143 ) (533 ) 0 (1,476 ) Recoveries 6 75 2,149 880 184 1 161 0 3,456 Provision (1,059 ) (5,566 ) 179 319 2,002 146 577 0 (3,402 ) Ending balance $ 13,359 $ 36,665 $ 80,487 $ 27,109 $ 41,579 $ 321 $ 15,074 $ 0 $ 214,594 Allowance for Loan and Lease Losses and Carrying Amount of Loans and Leases For the Year Ended December 31, 2021 Commercial Real Estate Other Residential Construction & Land Bankcard Other Allowance Total Owner- Nonowner- Allowance for Loan and Lease Losses: Beginning balance $ 23,354 $ 49,150 $ 78,138 $ 29,125 $ 39,077 $ 322 $ 16,664 $ 0 $ 235,830 Allowance for PCD loans (acquired during the period) 1,241 4,363 5,009 1,192 823 0 1 0 12,629 Charge-offs (414 ) (3,531 ) (6,182 ) (6,016 ) (560 ) (190 ) (2,404 ) 0 (19,297 ) Recoveries 869 1,907 4,307 2,400 604 42 449 0 10,578 Provision (10,607 ) (9,733 ) (2,840 ) (297 ) (549 ) 143 159 0 (23,724 ) Ending balance $ 14,443 $ 42,156 $ 78,432 $ 26,404 $ 39,395 $ 317 $ 14,869 $ 0 $ 216,016

Intangible Assets

Intangible Assets	3 Months Ended
	Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	7. INTANGIBLE ASSETS The following is a summary of intangible assets subject to amortization and those not subject to amortization: March 31, 2022 Community Banking Mortgage Banking Total Gross Accumulated Gross Accumulated Gross Accumulated Amortized intangible assets: Core deposit intangible assets $ 105,165 ($ 83,407 ) $ 0 $ 0 $ 105,165 ($ 83,407 ) Non-amortized George Mason trade name $ 0 $ 1,080 $ 1,080 Crescent trade name 0 196 196 Total $ 0 $ 1,276 $ 1,276 Goodwill not subject to amortization $ 1,883,929 $ 5,315 $ 1,889,244 December 31, 2021 Community Banking Mortgage Banking Total Gross Accumulated Gross Accumulated Amortization Gross Carrying Amount Accumulated Amortization Amortized intangible assets: Core deposit intangible assets $ 105,165 ( $ 82,028 ) $ 0 $ 0 $ 105,165 ( $ 82,028 ) Non-amortized George Mason trade name $ 0 $ 1,080 $ 1,080 Crescent trade name 0 196 196 Total $ 0 $ 1,276 $ 1,276 Goodwill not subject to amortization $ 1,881,179 $ 5,315 $ 1,886,494 United incurred amortization expense of $1,379 and $1,466 for the quarters ended March 31, 2022 and 2021, respectively. The following table provides a reconciliation of goodwill: Community Mortgage Total Goodwill at December 31, 2021 $ 1,881,179 $ 5,315 $ 1,886,494 Addition 2,750 0 2,750 Goodwill at March 31, 2022 $ 1,883,929 $ 5,315 $ 1,889,244 The addition during the first quarter of 2022 to goodwill from the Community Bankers Trust acquisiton was due mainly to establish a reserve for income tax contingencies. The following table sets forth the anticipated amortization expense for intangible assets for the years subsequent to 2021: Year Amount 2022 $ 5,516 2023 5,116 2024 3,639 2025 3,282 2026 2,758 2027 and thereafter 2,826

Mortgage Servicing Rights

Mortgage Servicing Rights	3 Months Ended
	Mar. 31, 2022
Servicing Asset [Abstract]
Mortgage Servicing Rights	8. 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. The Company initially measures servicing assets and liabilities retained related to the sale of residential loans held for sale (“MSRs”) at fair value, if practicable. For subsequent measurement purposes, the Company measures servicing assets and liabilities based on the lower of cost or market using the amortization method. 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”), Government national Mortgage Association (“GNMA”) 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. The unpaid principal balances of loans serviced for others were approximately $ at March , and $ at December , . The estimated fair value of the mortgage servicing rights was $37,740 and $27,355 at March 31, 2022 and December 31, 2021, respectively. The estimated fair value of servicing rights at March 31, 2022 was determined using a net servicing fee of 0.26%, average discount rates ranging from 10.50% to 10.98% with a weighted average discount rate of 10.61%, average constant prepayment rates (“CPR”) ranging from 8.02% to 13.24% with a weighted average prepayment rate of 9.79%, depending upon the stratification of the specific servicing right, and a delinquency rate, including loans on forbearance of 2.65%. The estimated fair value of servicing rights at December 31, 2021 was determined using a net servicing fee of 0.26%, average discount rates ranging from 10.50% to 11.71% with a weighted average discount rate of 10.60%, average constant prepayment rates (“CPR”) ranging from 12.59% to 21.20% with a weighted average prepayment rate of 16.56%, depending upon the stratification of the specific servicing right, and a delinquency rate, including loans on forbearance of 2.09%. Please refer to Note 15 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 three months ended March 31, 2022 and 2021: Three Months Ended March 31, 2022 Three Months Ended March 31, 2021 MSRs beginning balance $ 24,027 $ 22,338 Amount capitalized 687 3,224 Amount amortized (1,625 ) (2,161 ) MSRs ending balance $ 23,089 $ 23,401 MSRs valuation allowance beginning balance $ (883 ) $ (1,383 ) Aggregate additions charged and recoveries credited to operations 883 0 MSRs impairment (0 ) (0 ) MSRs valuation allowance ending balance $ (0 ) $ (1,383 ) MSRs, net of valuation allowance $ 23,089 $ 22,018 The Company did not record any temporary impairments on mortgage servicing rights for the three months ended March 31, 2022 and 2021. The estimated amortization expense is based on current information regarding future loan payments and prepayments. Amortization expense could change in future periods based on changes in the volume of prepayments and economic factors.

Leases

Leases	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Leases	9. 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 United’s operating leases are subject to renewal options under various terms. United’s operating leases have remaining terms of 1 to 16 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: Three Months Ended Classification March 31, 2022 March 31, 2021 Operating lease cost Net occupancy expense $ 5,129 $ 5,349 Sublease income Net occupancy expense (168 ) (297 ) Net lease cost $ 4,961 $ 5,052 Supplemental balance sheet information related to leases was as follows: Classification March 31, 2022 December 31, 2021 Operating lease right-of-use Operating lease right-of-use $ 77,097 $ 81,942 Operating lease liabilities Operating lease liabilities $ 81,678 $ 86,703 Other information related to leases was as follows: March 31, 2022 Weighted-average remaining lease term: Operating leases 6.83 years Weighted-average discount rate: Operating leases 2.12 % Supplemental cash flow information related to leases was as follows: Three Months Ended March 31, 2022 March 31, 2021 Cash paid for amounts in the measurement of lease liabilities: Operating cash flows from operating leases $ 5,310 $ 5,446 ROU assets obtained in the exchange for lease liabilties 1,601 4,443 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, 2021, consists of the following as of March 31, 2022: Year Amount 2022 $ 14,371 2023 17,243 2024 12,382 2025 9,256 2026 7,947 Thereafter 26,324 Total lease payments 87,523 Less: imputed interest (5,845 ) Total $ 81,678

Short-Term Borrowings

Short-Term Borrowings	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Short-Term Borrowings	10. SHORT-TERM BORROWINGS At March 31, 2022 and December 31, 2021, short-term borrowings were as follows: As of March 31, 2022 As of December 31, 2021 Federal funds purchased $ 0 $ 0 Securities sold under agreements to repurchase 136,370 128,844 Total short-term borrowings $ 136,370 $ 128,844 Securities United has various unused lines of credit available from certain of its correspondent banks in the aggregate amount of $230,000. 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. The securities sold under agreements to repurchase were accounted for as collateralized financial transactions. They were recorded at the amounts at which the securities were acquired or sold plus accrued interest. United has a $ 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 day basis and carries an indexed, floating-rate of interest. The line requires compliance with various financial and nonfinancial covenants. At March , , United had outstanding balance under this credit.

Long-Term Borrowings

Long-Term Borrowings	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Long-Term Borrowings	11. 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 March 31, 2022, United had an unused borrowing amount of approximately $7,668,153 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 March 31, 2022, $531,615 of FHLB advances with a weighted-average contractual interest rate of 0.48% and a weighted-average effective interest rate of 0.55% are scheduled to mature within the next four years. The weighted-average effective rate considers the effect of any interest rate swaps designated as cash flow The scheduled maturities of these FHLB borrowings are as follows: Year Amount 2022 $ 520,625 2023 0 2024 0 2025 10,990 2026 and thereafter 0 Total $ 531,615 At fixed-to-floating Corporation 2 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.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	12. COMMITMENTS AND CONTINGENT LIABILITIES Lending-related Commitments United is a party to financial instruments with off-balance-sheet 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 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 $7,117,518 and $6,847,550 of loan commitments outstanding as of March 31, 2022 and December 31, 2021, respectively, approximately 35% of which contractually expire within one year. Excluded in the March 31, 2022 and December 31, 2021 amounts above are commitments to extend credit of $714,634 and $571,792, respectively, related to mortgage loan funding commitments of United’s mortgage banking segment which are of a short-term nature. 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 March 31, 2022 and December 31, 2021, United had $17,408 and $14,774 of commercial letters of credit outstanding, respectively. 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 $155,933 and $164,743 as of March 31, 2022 and December 31, 2021, 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 Repurchase Reserve United’s mortgage banking segment 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 mortgage banking segment had a reserve of $1,150 as of March 31, 2022 and December 31, 2021. United has derivative counter-party risk that may arise from the possible inability of United’s mortgage banking segment’s third party investors to meet the terms of their forward sales contracts. United’s mortgage banking segment works with 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. 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 position. 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	3 Months Ended
	Mar. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	13. 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. 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. 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 the second quarter of 2020, United entered into a new interest rate swap derivative designated as a cash flow hedge. The notional amount of the cash flow hedge derivative totaled $250,000. The derivative is intended to hedge the changes in cash flows associated with floating rate FHLB borrowings. United is required to pay-fixed 1-month pay-fixed and receive-variable 1-month LIBOR with monthly resets. The tenor of the interest rate swap derivative is 4 years with an expiration date in August 2024. As of March 31, 2022, 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 $6,425 will be reclassified from AOCI as an increase to interest expense over the next 12-months following March 31, 2022 related to the cash flow hedges. As of March 31, 2022, the maximum length of time over which forecasted transactions are hedged is nine years. 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 through its mortgage banking subsidiaries 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 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 includes the servicing premium and the interest spread for the difference between retail and wholesale mortgage rates. 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 collateralized-to-market. 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 March 31, 2022 and December 31, 2021. Asset Derivatives March 31, 2022 December 31, 2021 Balance Sheet Location Notional Amount Fair Value Balance Sheet Location Notional Amount Fair Value Derivatives designated as hedging instruments Fair Value Hedges: Interest rate swap contracts (hedging commercial loans) Other assets $ 44,167 $ 136 Other assets $ 0 $ 0 Total Fair Value Hedges $ 44,167 $ 136 $ 0 $ 0 Cash Flow Hedges: Interest rate swap contracts (hedging FHLB borrowings) Other assets $ 500,000 $ 44,364 Other assets $ 500,000 $ 21,328 Total Cash Flow Hedges $ 500,000 $ 44,364 $ 500,000 $ 21,328 Total derivatives designated as hedging instruments $ 544,167 $ 44,500 $ 500,000 $ 21,328 Derivatives not designated as hedging instruments Forward loan sales commitments Other assets $ 0 $ 0 Other assets $ 33,349 $ 430 TBA mortgage-backed securities Other assets 546,450 11,067 Other assets 133,747 127 Interest rate lock commitments Other assets 316,944 5,984 Other assets 467,472 10,380 Total derivatives not designated as hedging instruments $ 863,394 $ 17,051 $ 634,568 $ 10,937 Total asset derivatives $ 1,407,561 $ 61,551 $ 1,134,568 $ 32,265 Liability Derivatives March 31, 2022 December 31, 2021 Balance Sheet Location Notional Amount Fair Value Balance Sheet Location Notional Amount Fair Value Derivatives designated as hedging instruments Fair Value Hedges: Interest rate swap contracts (hedging commercial loans) Other liabilities $ 14,144 $ 84 Other liabilities $ 72,447 $ 3,197 Total Fair Value Hedges $ 14,144 $ 84 $ 72,447 $ 3,197 Total derivatives designated as hedging instruments $ 14,144 $ 84 $ 72,447 $ 3,197 Liability Derivatives March 31, 2022 December 31, 2021 Balance Sheet Location Notional Amount Fair Value Balance Sheet Location Notional Amount Fair Value Derivatives not designated as hedging instruments Forward loan sales commitments Other liabilities $ 38,757 $ 655 Other liabilities $ 15,005 $ 36 TBA mortgage-backed securities Oth er liabilities 0 0 Other liabilities 550,000 470 Interest rate lock commitments Other liabilities 412,808 4,867 Other liabilities 24,743 25 Total derivatives not designated as hedging instruments $ 451,565 $ 5,522 $ 589,748 $ 531 Total liability derivatives $ 465,709 $ 5,606 $ 662,195 $ 3,728 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 March 31, 2022 and December 31, 2021. Derivatives in Fair Value Hedging Relationships Location in the Statement Condition March 31, 2022 Carrying Amount of Hedged Cumulative Amount of Fair Cumulative Amount of Fair Interest rate swaps Loans, net of unearned income $ 59,047 $ 53 $ 0 Derivatives in Fair Value Hedging Relationships Location in the Statement December 31, 2021 Carrying Amount of Hedged Cumulative Amount of Fair Cumulative Amount of Fair Interest rate swaps Loans, net of unearned income $ 73,232 $ (3,197) $ 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 m 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 unaudited Consolidated Statements of Income for the three months ended March 31, 2022 and 2021 are presented as follows: Three Months Ended Income Statement Location March 31, March 31, Derivatives in hedging relationships Fair Value Hedges: Interest rate swap contracts Interest and fees on loans $ (601 ) $ (235 ) Cash flow Hedges: Interest rate swap contracts Interest on long-term borrowings $ (342 ) $ (223 ) Total derivatives in hedging relationships $ (943 ) $ (458 ) Three Months Ended Income Statement Location March 31, March 31, Derivatives not designated as hedging instruments Forward loan sales commitments Income from Mortgage Banking Activities $ (1,049 ) $ (2,990 ) TBA mortgage-backed securities Income from Mortgage Banking Activities 11,410 24,163 Interest rate lock commitments Income from Mortgage Banking Activities (3,704 ) (6,991 ) Total derivatives not designated as hedging instruments $ 6,657 $ 14,182 Total derivatives $ 5,714 $ 13,724

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	14. FAIR VALUE MEASUREMENTS United determines the fair values of its financial instruments based on the fair value hierarchy established in ASC Topic 820, which also clarifies that fair value of certain assets and liabilities is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. 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. 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 2”). Management internally reviews the fair values provided by third party vendors on a monthly basis. Management also performs a quarterly price testing analysis at the individual security level which compares the pricing provided by the third party vendors to an independent pricing source’s valuation of the same securities. Variances that are deemed to be material are reviewed by management. Additionally, to further assess the reliability of the information received from third party vendors, management obtains documentation from third party vendors related to the sources, methodologies, and inputs utilized in valuing securities classified as Level 2. Management analyzes this information to ensure the underlying assumptions appear reasonable. Management also obtains an independent service auditor’s report from third party vendors to provide reasonable assurance that appropriate controls are in place over the valuation process. Upon completing its review of the pricing from third party vendors at March 31, 2022, management determined that the prices provided by its third party pricing sources were reasonable and in line with management’s expectations for the market values of these securities. Therefore, prices obtained from third party vendors that did not reflect forced liquidation or distressed sales were not adjusted materially by management at March 31, 2022. Management utilizes a number of factors to determine if a market is inactive, all of which may require a significant level of judgment. Factors that management considers include: a significant widening of the bid-ask available-for-sale 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’s mortgage banking subsidiaries enter into contractual interest rate lock commitments to extend credit to borrowers with fixed expiration dates. The commitments become effective when the borrowers “lock-in” worthiness prior to the extension of the commitment. Market risk arises if interest rates move adversely between the time of the interest rate lock by the borrower and the sale date of the loan to the investor. To mitigate the effect of the interest rate risk inherent in providing rate lock commitments to borrowers, United’s mortgage banking subsidiaries enter into either a forward sales contract to sell loans to investors when using best efforts or a TBA mortgage-backed security under mandatory delivery. Fair values of TBA mortgage-backed securities are measured using valuations from investors for mortgage-backed securities with similar characteristics (“Level 2”). The forward sales contracts lock in an interest rate and price for the sale of loans similar to the specific rate lock commitments. Under the Company’s best efforts model, the rate lock commitments to borrowers and the forward sales contracts to investors through to the date the loan closes are undesignated derivatives and accordingly, are marked to fair value through earnings. These valuations fall into a Level 2 category. For residential mortgage loans sold in the mortgage banking segment, the interest rate lock commitments are recorded at fair value which is measured using valuations from investors for loans with similar characteristics (“Level 2”) with some adjusted for the Company’s actual sales experience versus the investor’s indicated pricing (“Level 3”). The unobservable input for Level 3 valuations is the Company’s historical sales prices. For March 31, 2022, the range of historical sales prices increased the investor’s indicated pricing by a range of 0.07% to 0.65% with a weighted average increase of 0.13%. For interest rate swap 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. Unrealized gains and losses due to changes in the fair value of other derivative financial instruments not in hedge relationship are included in noninterest income and noninterest expense, respectively. The following tables present the balances of financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2022 and December 31, 2021, segregated by the level of the valuation inputs within the fair value hierarchy. Description Balance as of March 31, 2022 Fair Value at March 31, 2022 Using 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 $ 371,392 $ 0 $ 371,392 $ 0 State and political subdivisions 795,512 0 795,512 0 Residential mortgage-backed securities Agency 1,389.535 0 1,389,535 0 Non-agency 100,097 0 100,097 0 Commercial mortgage-backed securities Agency 627,168 0 627,168 0 Asset-backed securities 843,999 0 843,999 0 Single issue trust preferred securities 16,669 0 16,669 0 Other corporate securities 616,562 5,608 610,954 0 Total available for sale securities 4,760,934 5,608 4,755,326 0 Equity securities: Financial services industry 205 205 0 0 Equity mutual funds (1) 6,611 6,611 0 0 Other equity securities 5,541 5,541 0 0 Total equity securities 12,357 12,357 0 0 Loans held for sale 340,040 0 31,690 308,350 Derivative financial assets: Interest rate swap contracts 44,500 0 44,500 0 Forward sales commitments 0 0 0 0 TBA mortgage-backed securities 11,067 0 1,932 9,135 Description Balance as of March 31, 2022 Fair Value at March 31, 2022 Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Interest rate lock commitments 5,984 0 192 5,792 Total derivative financial assets 61,551 0 46,624 14,927 Liabilities Derivative financial liabilities: Interest rate swap contracts 84 0 84 0 Forward sales commitments 655 0 258 397 TBA mortgage-backed securities 0 0 0 0 Interest rate lock commitments 4,867 0 169 4,698 Total derivative financial liabilities 5,606 0 511 5,095 Fair Value at December 31, 2021 Using Description Balance as of December 31, 2021 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 $ 81,850 $ 0 $ 81,850 $ 0 State and political subdivisions 847,298 0 847,298 0 Residential mortgage-backed securities Agency 1,113,774 0 1,113,774 0 Non-agency 74,545 0 74,545 0 Commercial mortgage-backed securities Agency 639,925 0 639,925 0 Asset-backed securities 656,572 0 656,572 0 Single issue trust preferred securities 16,811 0 16,811 0 Other corporate securities 611,924 5,758 606,166 0 Total available for sale securities 4,042,699 5,758 4,036,941 0 Equity securities: Financial services industry 187 187 0 0 Equity mutual funds (1) 6,406 6,406 0 0 Other equity securities 5,811 5,811 0 0 Total equity securities 12,404 12,404 0 0 Loans held for sale 504,416 0 40,307 464,109 Derivative financial assets: Interest rate swap contracts 21,328 0 21,328 0 Forward sales commitments 430 0 430 0 TBA mortgage-backed securities 127 0 66 61 Interest rate lock commitments 10,380 0 936 9,444 Total derivative financial assets 32,265 0 22,760 9,505 Liabilities Derivative financial liabilities: Interest rate swap contracts 3,197 0 3,197 0 Forward sales commitments 36 0 0 36 TBA mortgage-backed securities 470 0 0 470 Interest rate lock commitments 25 0 0 25 Total derivative financial liabilities 3,728 0 3,197 531 There were no transfers between Level 1 and Level 2 for financial assets and liabilities measured at fair value on a recurring basis during the three months ended March 31, 2022 and the year ended December 31, 2021. The following tables present additional information about financial assets and liabilities measured at fair value at March 31, 2022 and December 31, 2021 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. Loans held for sale March 31, 2022 December 31, Balance, beginning of period $ 464,109 $ 654,733 Originations 803,186 4,984,363 Sales (975,130 ) (5,313,758 ) Total gains or losses during the period recognized in earnings 16,185 138,771 Balance, end of period $ 308,350 $ 464,109 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 $ (1,295 ) $ 10,506 Derivative Financial Assets TBA Securities March 31, 2022 December 31, Balance, beginning of period $ 61 $ 0 Transfers other 9,074 61 Balance, end of period $ 9,135 $ 61 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 $ 9,135 $ 61 Derivative Financial Assets Interest Rate Lock March 31, 2022 December 31, Balance, beginning of period $ 9,444 $ 32,011 Transfers other (3,652 ) (22,567 ) Balance, end of period $ 5,792 $ 9,444 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 $ 5,792 $ 9,444 Derivative Financial Liabilities Forward Sales Commitments March 31, 2022 December 31, Balance, beginning of period $ 36 $ 0 Transfers other 361 36 Balance, end of period $ 397 $ 36 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 $ 397 $ 36 Derivative Financial Liabilities TBA Securities March 31, 2022 December 31, Balance, beginning of period $ 470 $ 0 Transfers other (470 ) 470 Balance, end of period $ 0 $ 470 The amount of total gains for the period included in earnings (or $ 0 $ 470 Derivative Financial Liabilities Interest Rate Lock Commitments March 31, 2022 December 31, Balance, beginning of period $ 25 $ 0 Transfers other 4,673 25 Balance, end of period $ 4,698 $ 25 The amount of total gains for the period included in earnings (or $ 4,698 $ 25 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: Description Three Months Ended March 31, 2022 Three Months Ended March 31, 2021 Income from mortgage banking activities $ (11,882 ) $ (17,851 ) 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: March 31, 2022 December 31, 2021 Description Unpaid Fair Fair Value Unpaid Fair Value Fair Value Loans held for sale $ 341,284 $ 340,040 $ (1,244 ) $ 493,340 $ 504,416 $ 11,076 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 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. Loans held for sale origination and sale (“Level 2”). As such, United records any fair value adjustments for these loans held for sale on a nonrecurring basis. No nonrecurring fair value adjustments were recorded on loans held for sale during the year ended March 31, 2022. Gains and losses on sale of loans are recorded within income from mortgage banking activities on the Consolidated Statements of Income. Individually assessed loans OREO bi-annual Intangible Assets more-likely-than-not COVID-19 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: Description Balance as of March 31, 2022 Carrying value at March 31, 2022 YTD Gains (Losses) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Individually assessed loans $ 24,261 $ 0 $ 8,393 $ 15,868 $ (255 ) OREO 13,641 0 13,475 166 (75 ) Mortgage servicing rights 37,740 0 0 37,740 883 Description Balance as of December 31, 2021 Carrying value at December 31, 2021 YTD (Losses) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Individually assessed loans $ 65,431 $ 0 $ 46,830 $ 18,601 $ (601 ) OREO 14,823 0 3,209 11,614 (4,020 ) Mortgage servicing rights 27,355 0 0 27,355 (629 ) 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 fair value of identical or similar securities by using pricing models that consider observable market data. Any securities held to maturity, not valued based upon the methods above, are valued based on a discounted cash flow methodology using appropriately adjusted discount rates reflecting nonperformance and liquidity risks. Other securities consist mainly of shares of Federal Home Loan Bank and Federal Reserve Bank stock that do not have readily determinable fair values and are carried at cost. Loans and leases one-to-four Deposits approximate their fair values at the reporting date. Fair values of fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time 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 Measurements Carrying Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) March 31, 2022 Cash and cash equivalents $ 2,803,093 $ 2,803,093 $ 0 $ 2,803,093 $ 0 Securities available for sale 4,760,934 4,760,934 5,608 4,755,326 0 Securities held to maturity 1,001 1,020 0 0 1,020 Equity securities 12,357 12,357 12,357 0 0 Other securities 246,420 234,099 0 0 234,099 Loans held for sale 340,040 340,040 0 31,690 308,350 Net loans 18,177,492 17,323,530 0 0 17,323,530 Derivative financial assets 61,551 61,551 0 46,624 14,927 Mortgage servicing rights 23,089 37,740 0 0 37,740 Deposits 23,474,301 23,455,019 0 0 23,455,019 Short-term borrowings 136,370 136,370 0 136,370 0 Long-term borrowings 817,235 775,896 0 775,896 0 Derivative financial liabilities 5,606 5,606 0 511 5,095 Fair Value Measurements 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, 2021 Cash and cash equivalents $ 3,758,170 $ 3,758,170 $ 0 $ 3,758,170 $ 0 Securities available for sale 4,042,699 4,042,699 5,758 4,036,941 0 Securities held to maturity 1,001 1,020 0 0 1,020 Equity securities 12,404 12,404 12,404 0 0 Other securities 239,645 227,663 0 0 227,663 Loans held for sale 504,416 504,416 0 40,307 464,109 Net loans 17,807,632 17,119,202 0 0 17,119,202 Derivative financial assets 32,265 32,265 0 22,760 9,505 Mortgage servicing rights 23,144 27,355 0 0 27,355 Deposits 23,350,263 23,334,431 0 23,334,431 0 Short-term borrowings 128,844 128,844 0 128,844 0 Long-term borrowings 817,394 773,291 0 773,291 0 Derivative financial liabilities 3,728 3,728 0 3,197 531

Stock Based Compensation

Stock Based Compensation	3 Months Ended
	Mar. 31, 2022
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Based Compensation	15. 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 non-employee non-employee S-8 Compensation expense of $2,061 and $1,688 related to the nonvested awards under United’s Long-Term Incentive Plans was incurred for the first quarter of 2022 and 2021, respectively. Compensation expense was included in employee compensation in the unaudited 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 United’s stock option plans as of March , , and the changes during the first three months of are presented below: Three Months Ended March 31, 2022 Shares Aggregate Weighted Average Remaining Exercise Price Outstanding at January 1, 2022 2,149,117 $ 32.01 Exercised (258,574 ) 22.37 Forfeited or expired (82,088 ) 29.51 Outstanding at March 31, 2022 1,808,455 $ 6,720 5.0 $ 33.50 Exercisable at March 31, 2022 1,637,092 $ 6,449 4.7 $ 33.40 The following table summarizes the status of United’s nonvested stock option awards during the first three months of 2022: Shares Weighted-Average Nonvested at January 1, 2022 395,034 $ 7.33 Vested (215,926 ) 8.11 Forfeited or expired (7,745 ) 11.35 Nonvested at March 31, 2022 171,363 $ 6.16 During the three months ended March 31, 2022 and 2021, 258,574 and 145,621 shares, respectively, were issued in connection with stock option exercises. All shares issued in connection with stock option exercises for the three months ended March 31, 2022 and 2021 were issued from authorized and unissued stock. The total intrinsic value of options exercised under the Plans during the three months ended March 31, 2022 and 2021 was $3,856 and $1,408 respectively. Restricted Stock Under the 2020 LTI Plan, United may award restricted common shares to key employees and non-employee The following summarizes the changes to United’s nonvested restricted common shares for the period ended March 31, 2022: Shares Weighted-Average Nonvested at January 1, 2022 383,971 $ 35.21 Granted 154,568 36.26 Vested (149,811 ) 35.79 Forfeited (6,212 ) 35.85 Nonvested at March 31, 2022 382,516 $ 35.40 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 first three months of 2022: Shares Weighted-Average Nonvested at January 1, 2022 136,896 $ 35.65 Granted 147,511 35.46 Vested (18,248 ) 37.05 Nonvested at March 31, 2022 266,159 $ 35.45

Employee Benefit Plans

Employee Benefit Plans	3 Months Ended
	Mar. 31, 2022
Retirement Benefits [Abstract]
Employee Benefit Plans	16. EMPLOYEE BENEFIT PLANS United has a defined benefit retirement plan covering qualified employees hired prior to October 1, 2007. 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 are intended to provide not only for benefits attributed to service to date, but also for those expected to be earned in the future. No discretionary contributions were made during the first quarter of 2022 and 2021. Included in accumulated other comprehensive income at December 31, 2021 are unrecognized actuarial losses of $44,370 ($34,032 net of tax) that have not yet been recognized in net periodic pension cost. Net periodic pension cost for the three months ended March 31, 2022 and 2021 included the following components: Three Months Ended March 31 2022 2021 Service cost $ 703 $ 750 Interest cost 1,208 1,020 Expected return on plan assets (3,193 ) (2,924 ) Recognized net actuarial loss 824 1,572 Net periodic pension (benefit) cost $ (458 ) $ 418 Weighted-Average Assumptions: Discount Rate 3.08 % 2.81 % Expected return on assets 6.25 % 6.25 % Rate of Compensation Increase (prior to age 40) 5.00 % 5.00 % Rate of Compensation Increase (ages 40-54) 4.00 % 4.00 % Rate of Compensation Increase (prior to age 45) n/ n/ Rate of Compensation Increase (otherwise) 3.50 % 3.50 %

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	17. INCOME TAXES United records a liability for uncertain income tax positions based on a recognition threshold of more-likely-than-not, As of March 31, 2022 and 2021, the total amount of accrued interest related to uncertain tax positions was $753 and $695, respectively. United accounts for interest and penalties related to uncertain tax positions as part of its provision for federal and state income taxes. United is currently open to audit under the statute of limitations by the Internal Revenue Service for the years ended December 31, 2018, 2019 and 2020 and certain State Taxing authorities for the years ended December 31, 2018 through 2020. United’s effective tax rate was 19.75% for the first quarter of 2022 and 20.50% for the first quarter of 2021.

Comprehensive Income

Comprehensive Income	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Comprehensive Income	18. COMPREHENSIVE INCOME The components of total comprehensive income for the three months ended March 31, 2022 and 2021 are as follows: Three Months Ended March 31 2022 2021 Net Income $ 81,664 $ 106,898 Available for sale (“AFS”) securities: Change in net unrealized loss on AFS securities arising during the period (202,234 ) (45,967 ) Related income tax effect 47,121 10,710 Net reclassification adjustment for gains included in net income (0 ) (1,444 ) Related income tax effect 0 336 (155,113 ) (36,365 ) Net effect of AFS securities on other comprehensive income (155,113 ) (36,365 ) Cash flow hedge derivatives: Unrealized gain on cash flow hedge before reclassification to interest expense 22,694 19,317 Related income tax effect (5,288 ) (4,501 ) Net reclassification adjustment for losses included in net income 342 223 Related income tax effect (80 ) (52 ) Net effect of cash flow hedge derivatives on other comprehensive income 17,668 14,987 Pension plan: Recognized net actuarial loss 824 1,572 Related income tax benefit (183 ) (703 ) Net effect of change in pension plan asset on other comprehensive income 641 869 Total change in other comprehensive income (136,804 ) (20,509 ) Total Comprehensive Income $ (55,140 ) $ 86,389 The components of accumulated other comprehensive income for the three months ended March 31, 2022 are as follows: Changes in Accumulated Other Comprehensive Income (AOCI) by Component (a) For the Three Months Ended March 31, 2022 Unrealized Unrealized Defined Items Total Balance at January 1, 2022 $ 8,594 $ 16,359 $ (29,841 ) $ (4,888 ) Other comprehensive income before reclassification (155,113 ) 17,406 0 (137,707 ) Amounts reclassified from accumulated other comprehensive income (0 ) 262 641 903 Net current-period other comprehensive income, net of tax (155,113 ) 17,668 641 (136,804 ) Balance at March 31, 2022 $ (146,519 ) $ 34,027 $ (29,200 ) $ (141,692 ) (a) All amounts are net-of-tax. Reclassifications out of Accumulated Other Comprehensive Income (AOCI) For the Three Months Ended March 31, 2022 Details about AOCI Components Amount Affected Line Item in the Statement Where Net Income is Presented Available for sale (“AFS”) securities: Net reclassification adjustment for gains included in net income $ (0 ) Net investment securities gains (0 ) Total before tax Related income tax effect 0 Income taxes (0 ) Net of tax Cash flow hedge: Net reclassification adjustment for losses included in net income $ 342 Interest expense 342 Total before tax Related income tax effect (80 ) Income taxes 262 Net of tax Pension plan: Recognized net actuarial loss 824 (a) 824 Total before tax Related income tax effect (183 ) Income taxes 641 Net of tax Total reclassifications for the period $ 903 (a) This AOCI component is included in the computation of changes in plan assets (see Note 16, Employee Benefit Plans)

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Earnings Per Share	19. 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: Three Months Ended March 31 2022 2021 Distributed earnings allocated to common stock $ 49,056 $ 45,068 Undistributed earnings allocated to common stock 32,392 61,531 Net earnings allocated to common shareholders $ 81,448 $ 106,599 Average common shares outstanding 136,058,328 128,635,740 Common stock equivalents 376,901 255,121 Average diluted shares outstanding 136,435,229 128,890,861 Earnings per basic common share $ 0.60 $ 0.83 Earnings per diluted common share $ 0.60 $ 0.83

Variable Interest Entities

Variable Interest Entities	3 Months Ended
	Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	20. VARIABLE INTEREST ENTITIES 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. United does not consolidate these trusts as it is not the primary beneficiary of these entities because United’s wholly owned and indirect wholly owned statutory trust subsidiaries do not have a controlling financial interest in the VIEs. A controlling financial interest 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. Information related to United’s statutory trusts is presented in the table below: Description Issuance Date Amount of Stated Interest Rate Maturity Date United Statutory Trust III December 17, 2003 $ 20,000 3-month December 17, 2033 United Statutory Trust IV December 19, 2003 $ 25,000 3-month January 23, 2034 United Statutory Trust V July 12, 2007 $ 50,000 3-month October 1, 2037 United Statutory Trust VI September 20, 2007 $ 30,000 3-month December 15, 2037 Premier Statutory Trust II September 25, 2003 $ 6,000 3-month October 8, 2033 Premier Statutory Trust III May 16, 2005 $ 8,000 3-month June 15, 2035 Premier Statutory Trust IV June 20, 2006 $ 14,000 3-month September 23, 2036 Premier Statutory Trust V December 14, 2006 $ 10,000 3-month March 1, 2037 Centra Statutory Trust I September 20, 2004 $ 10,000 3-month September 20, 2034 Centra Statutory Trust II June 15, 2006 $ 10,000 3-month July 7, 2036 Virginia Commerce Trust II December 19, 2002 $ 15,000 6-month December 19, 2032 Virginia Commerce Trust III December 20, 2005 $ 25,000 3-month February 23, 2036 Cardinal Statutory Trust I July 27, 2004 $ 20,000 3-month September 15, 2034 UFBC Capital Trust I December 30, 2004 $ 5,000 3-month March 15, 2035 Carolina Financial Capital Trust I December 19, 2002 $ 5,000 Prime + 0.50% December 31, 2032 Description Issuance Date Amount of Stated Interest Rate Maturity Date Carolina Financial Capital Trust II November 5, 2003 $ 10,000 3-month January 7, 2034 Greer Capital Trust I October 12, 2004 $ 6,000 3-month October 18, 2034 Greer Capital Trust II December 28, 2006 $ 5,000 3-month January 30, 2037 First South Preferred Trust I September 26, 2003 $ 10,000 3-month September 30, 2033 BOE Statutory Trust I December 12, 2003 $ 4,000 3-month December 12, 2033 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. United’s limited partner interests in these entities is immaterial, however; these partnerships are not consolidated as United is not deemed to be the primary beneficiary. The following table summarizes quantitative information about United’s significant involvement in unconsolidated VIEs: As of March 31, 2022 As of December 31, 2021 Aggregate Assets Aggregate Liabilities Risk Of Loss (1) Aggregate Assets Aggregate Liabilities Risk Of Loss (1) Trust preferred securities $ 299,720 $ 288,653 $ 11,067 $ 299,531 $ 288,499 $ 11,032 (1) Represents investment in VIEs.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2022
Segment Reporting [Abstract]
Segment Information	21. SEGMENT INFORMATION United operates in two business segments: community banking and mortgage banking. Through its community banking segment, United offers a full range of products and services through various delivery channels. In particular, the community banking segment includes both commercial and consumer lending and provides customers with such products as commercial loans, real estate loans, business financing and consumer loans. In addition, this segment provides customers with several choices of deposit products including demand deposit accounts, savings accounts and certificates of deposit as well as investment and financial advisory services to businesses and individuals, including financial planning, retirement/estate planning, and investment management. The mortgage banking segment engages primarily in the origination and acquisition of residential mortgages for sale into the secondary market though United’s mortgage banking subsidiaries, George Mason and Crescent. Crescent may retain servicing rights on their mortgage loans sold. At certain times, Crescent may purchase rights to service loans from third parties. These rights, which are known as mortgage servicing rights, provide the owner with the contractual right to receive a stream of cash flows in exchange for performing specified mortgage servicing functions. The community banking segment provides the mortgage banking segment (George Mason and Crescent) with short-term funds to originate mortgage loans through a warehouse line of credit and charges the mortgage banking segment interest based on the 30-day The Company does not have any operating segments other than those reported. The “Other” category consists of financial information not directly attributable to a specific segment, including interest income from investments and net securities gains or losses of parent companies and their non-banking subsidiaries, interest expense related to subordinated notes of unconsolidated subsidiaries as well as the elimination of non-segment related intercompany transactions such as management fees. The “Other” represents an overhead function rather than an operating segment. Information about the reportable segments and reconciliation of this information to the consolidated financial statements at and for the three months ended March 31, 2022 and 2021 is as follows: At and For the Three Months Ended March 31, 2022 Community Mortgage Other Intersegment Eliminations Consolidated Net interest income $ 189,682 $ 2,317 $ (2,125 ) $ 1,628 $ 191,502 Provision for credit losses (3,410 ) 0 0 0 (3,410 ) Other income 24,899 23,397 (60 ) (2,213 ) 46,023 Other expense 114,537 25,448 (227 ) (585 ) 139,173 Income taxes 20,429 57 (388 ) 0 20,098 Net income (loss) $ 83,025 $ 209 $ (1,570 ) $ 0 $ 81,664 Total assets (liabilities) $ 29,030,100 $ 589,503 $ 39,940 $ (294,032 ) $ 29,365,511 Average assets (liabilities) 29,023,901 475,243 33,357 (187,979 ) 29,344,522 At and For the Three Months Ended March 31, 2021 Community Mortgage Other Intersegment Eliminations Consolidated Net interest income $ 187,197 $ 2,650 $ (2,138 ) $ 3,251 $ 190,960 Provision for credit losses 143 0 0 0 143 Other income 26,388 67,507 1,521 (2,843 ) 92,573 Other expense 110,017 41,183 (2,681 ) 408 148,927 Income taxes 21,202 5,940 423 0 27,565 Net income (loss) $ 82,223 $ 23,034 $ 1,641 $ 0 $ 106,898 Total assets (liabilities) $ 26,625,449 $ 930,481 $ 40,862 $ (566,037 ) $ 27,030,755 Average assets (liabilities) 26,154,094 716,744 23,029 (402,751 ) 26,491,116

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated interim financial statements of United Bankshares, Inc. and Subsidiaries (“United” or “the Company”) have been prepared in accordance with accounting principles for interim financial information generally accepted in the United States (“GAAP”) and with the instructions for Form 10-Q S-X. 10-K, The accompanying consolidated interim financial statements include the accounts of United and its wholly owned subsidiaries. United operates in two business segments: community banking and mortgage banking. All significant intercompany accounts and transactions have been eliminated in the consolidated financial statements. Information is presented in these notes to the unaudited consolidated interim financial statements with dollars expressed in thousands, except per share or unless otherwise noted.
New Accounting Standards	New Accounting Standards In March 2022, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2022-02, 2022-02 310-40, 2022-02 No. 2022-02 No. 2022-02 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 combination in accordance with Topic 606. As a result of these amendments, it is expected that an acquirer 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 No. 2021-08 In July 2021, the FASB issued ASU No. 2021-05, 842-10-25-2 25-3, 842-10-24-3A, No. 2021-05 2021-05 No. 2021-05 In January 2021, the FASB issued ASU No. 2021-01, No. 2020-04, No. 2021-01 In August 2020, the FASB issued No. 2020-06, 470-20) 815-40).” earnings-per-share No. 2020-06 No. 2020-06 In March 2020, the FASB issued ASU No. 2020-04, No. 2020-04 No. 2021-01

Mergers and Acquisitions (Table

Mergers and Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2022
Summary of Reconciliation of Difference Between Purchase Price and Par Value of Purchase Credit Loans Acquired	The following table provides a reconciliation of the difference between the purchase price and the par value of portfolio PCD loans and leases acquired from Community Bankers Trust as of the Acquisition Date: Purchase price of PCD loans and leases at acquisition $ 360,638 Allowance for credit losses at acquisition 12,629 Non-credit 3,559 Par value (UPB) of acquired PCD loans and leases at acquisition $ 376,826
Summary of Business Acquisitions, by Acquisition	The consideration paid for Community Bankers Trust’s common equity and the preliminary amounts of acquired identifiable assets and liabilities assumed as of the Acquisition Date were as follows: Purchase price: Value of common shares issued (7,135,771 shares) $ 252,321 Fair value of stock options assumed 7,958 Cash for fractional shares 25 Total purchase price 260,304 Identifiable assets: Cash and cash equivalents 39,445 Investment securities 395,249 Net loans and leases 1,280,016 Premises and equipment 25,857 Operating lease right-of-use 8,127 Core deposit intangible 3,398 Other assets 51,069 Total identifiable assets $ 1,803,161 Identifiable liabilities: Deposits $ 1,520,243 Short-term borrowings 26,755 Long-term borrowings 51,500 Operating lease liability 8,127 Other liabilities 15,436 Total identifiable liabilities 1,622,061 Preliminary fair value of net assets acquired including identifiable intangible assets 181,100 Preliminary resulting goodwill $ 79,204
Summary of Business Acquisition, Pro Forma Information	Proforma Three Months Ended March 31, 2021 Total Revenues (1) $ 301,478 Net Income 115,211 (1) Represents net interest income plus other income

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2022
Summary of Amortized Cost and Estimated Fair Values of Available for Sale Securities	The amortized cost, estimated fair values, and allowance for credit losses of securities available for sale are summarized as follows. March 31, 2022 Amortized Gross Gross Allowance Estimated U.S. $ 377,085 $ 0 $ 5,693 $ 0 $ 371,392 State and political subdivisions 838,384 1,199 44,071 0 795,512 Residential mortgage-backed securities Agency 1,472,822 1,002 84,289 0 1,389,535 Non-agency 103,779 103 3,785 0 100,097 Commercial mortgage-backed securities Agency 653,526 1,121 27,479 0 627,168 Asset-backed securities 856,840 19 12,860 0 843,999 Single issue trust preferred securities 17,304 141 776 0 16,669 Other corporate securities 632,223 967 16,628 0 616,562 Total $ 4,951,963 $ 4,552 $ 195,581 $ 0 $ 4,760,934 December 31, 2021 Amortized Gross Gross Allowance Estimated U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 82,136 $ 51 $ 337 $ 0 $ 81,850 State and political subdivisions 831,499 19,608 3,809 0 847,298 Residential mortgage-backed securities Agency 1,120,423 9,173 15,822 0 1,113,774 Non-agency 74,965 306 726 0 74,545 Commercial mortgage-backed securities Agency 633,802 12,731 6,608 0 639,925 Asset-backed securities 659,830 49 3,307 0 656,572 Single issue trust preferred securities 17,291 146 626 0 16,811 Other corporate securities 611,548 3,558 3,182 0 611,924 Total $ 4,031,494 $ 45,622 $ 34,417 $ 0 $ 4,042,699
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 March 31, 2022 and December 31, 2021. Less than 12 months 12 months or longer Total Fair Unrealized Fair Unrealized Fair Unrealized March 31, 2022 U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 371,210 $ 5,690 $ 182 $ 3 $ 371,392 $ 5,693 State and political subdivisions 654,992 38,224 41,938 5,847 696,930 44,071 Residential mortgage-backed securities Agency 1,102,349 62,008 192,698 22,281 1,295,047 84,289 Non-agency 75,230 3,785 0 0 75,230 3,785 Commercial mortgage-backed securities Agency 327,316 14,407 97,085 13,072 424,401 27,479 Asset-backed securities 757,203 11,156 78,736 1,704 835,939 12,860 Single issue trust preferred securities 0 0 13,452 776 13,452 776 Other corporate securities 392,778 15,693 22,754 935 415,532 16,628 Total $ 3,681,078 $ 150,963 $ 446,845 $ 44,618 $ 4,127,923 $ 195,581 Less than 12 months 12 months or longer Total Fair Unrealized Fair Unrealized Fair Unrealized December 31, 2021 U.S. Treasury securities and obligations of U.S. Government corporations and agencies $ 75,106 $ 334 $ 213 $ 3 $ 75,319 $ 337 State and political subdivisions 223,754 2,872 24,067 937 247,821 3,809 Residential mortgage-backed securities Agency 680,320 13,167 71,392 2,655 751,712 15,822 Non-agency 55,336 726 0 0 55,336 726 Commercial mortgage-backed securities Agency 136,071 2,912 70,543 3,696 206,614 6,608 Asset-backed securities 532,373 2,620 82,222 687 614,595 3,307 Single issue trust preferred securities 0 0 13,594 626 13,594 626 Other corporate securities 307,912 3,182 0 0 307,912 3,182 Total $ 2,010,872 $ 25,813 $ 262,031 $ 8,604 $ 2,272,903 $ 34,417
Summary of Gains or Losses on Proceeds from Maturities, Sales and Calls of Available for Sale Securities by Specific Identification Method	Three Months Ended March 31 2022 2021 Proceeds from sales and calls $ 151,627 $ 269,529 Gross realized gains 0 1,542 Gross realized losses 0 98
Summary of Equity Securities	Three Months Ended 2022 2021 Net gains recognized during the period on equity securities sold $ 0 $ 788 Unrealized gains recognized during the period on equity securities still held at period end 19 27 Unrealized losses recognized during the period on equity securities still held at period end (270 ) (105 ) Net (losses) gains recognized during the period $ (251 ) $ 710
Available-for-sale Securities [Member]
Summary of Maturities of Debt Securities Held to Maturity by Amortized Cost and Estimated Fair Value	March 31, 2022 December 31, 2021 Amortized Estimated Amortized Estimated Due in one year or less $ 197,154 $ 197,158 $ 126,032 $ 126,564 Due after one year through five years 862,425 852,043 661,627 670,298 Due after five years through ten years 1,009,895 958,958 940,031 941,640 Due after ten years 2,882,489 2,752,775 2,303,804 2,304,197 Total $ 4,951,963 $ 4,760,934 $ 4,031,494 $ 4,042,699

Loans and Leases (Tables)

Loans and Leases (Tables)	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Major Classes of Loans And Leases	Major classes of loans and leases are as follows: March 31, 2022 December 31, 2021 Commercial, financial and agricultural: Owner-occupied commercial real estate $ 1,697,910 $ 1,733,176 Nonowner-occupied commercial real estate 6,047,856 5,957,288 Other commercial 3,533,910 3,462,361 Total commercial, financial & agricultural 11,279,676 11,152,825 Residential real estate 3,705,535 3,691,560 Construction & land development 2,186,126 2,014,165 Consumer: Bankcard 8,398 8,913 Other consumer 1,239,545 1,183,844 Less: Unearned income (27,194 ) (27,659 ) Total gross loans $ 18,392,086 $ 18,023,648

Credit Quality (Tables)

Credit Quality (Tables)	3 Months Ended
	Mar. 31, 2022
Text Block [Abstract]
Schedule of Reasons For Modification Troubled Debt Restructuring Loans	The following tables sets forth the balances of TDRs at March 31, 2022 and December 31, 2021 and the reasons for modification: Reason for modification March 31, 2022 December 31, 2021 Interest rate reduction $ 2,214 $ 3,163 Interest rate reduction and change in terms 1,265 1,412 Concession of principal and term 18 19 Extended maturity 4,990 4,831 Transfer of asset 0 5,407 Change in terms 22,095 21,024 Total $ 30,582 $ 35,856
Schedule of Troubled Debt Restructurings, Segregated by Class of Loans	The following table sets forth United’s troubled debt restructurings that were restructured during the three months ended March 31, 2022 and 2021, segregated by class of loans. Troubled Debt Restructurings March 31, 2022 March 31, 2021 Number of Pre- Post- Number of Pre- Post- Commercial real estate: Owner-occupied 1 $ 2,801 $ 2,788 1 $ 940 $ 922 Nonowner-occupied 0 0 0 1 937 937 Other commercial 0 0 0 0 0 0 Residential real estate 0 0 0 0 0 0 Construction & land development 0 0 0 0 0 0 Consumer: Bankcard 0 0 0 0 0 0 Other consumer 0 0 0 0 0 0 Total 1 $ 2,801 $ 2,788 2 $ 1,877 $ 1,859
Schedule Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance	The following table sets forth United’s troubled debt restructurings, based on their post-modification outstanding recorded balance, that have been restructured during the three months ended March 31, 2022 and 2021, segregated by the reason for modification: Three Months Ended Reason for modification March 31, March 31, Interest rate reduction $ 0 $ 0 Interest rate reduction and change in terms 0 0 Forgiveness of principal 0 0 Concession of principal and term 0 0 Transfer of asset 0 0 Extended maturity 0 0 Change in terms 2,788 1,859 Total $ 2,788 $ 1,859
Schedule of Charged-off Troubled Debt Restructurings on Financing Receivables	The following table presents troubled debt restructurings, by class of loan, that were restructured during the twelve-month period ended March 31, 2022 and March 31, 2021 and had charge-offs during the the first quarter of 2022 and 2021, respectively. The recorded investment amounts presented were as of the March 31, 2022 and 2021 balance sheet dates. Three Months Ended March 31, 2022 Three Months Ended March 31, 2021 Number of Recorded Number of Recorded Troubled Debt Restructurings Commercial real estate: Owner-occupied 0 $ 0 0 $ 0 Nonowner-occupied 0 0 0 0 Other commercial 1 114 0 0 Residential real estate 0 0 0 0 Construction & land development 0 0 2 550 Consumer: Bankcard 0 0 0 0 Other consumer 0 0 0 0 Total 1 $ 114 2 $ 550
Schedule of Age Analysis of Past Due Loans, Segregated by Class of Loans	The following table sets forth United’s age analysis of its past due loans and leases, segregated by class of loans: Age Analysis of Past Due Loans and Leases 30-89 Days 90 Days or Total Past Current & Total Financing 90 Days or Commercial real estate: Owner-occupied $ 8,569 $ 12,190 $ 20,759 $ 1,677,151 $ 1,697,910 $ 271 Nonowner-occupied 7,984 10,590 18,574 6,029,282 6,047,856 0 Other commercial 30,964 14,722 45,686 3,488,224 3,533,910 6,326 Residential real estate 21,196 19,588 40,784 3,664,751 3,705,535 6,365 Construction & land development 2,806 3,420 6,226 2,179,900 2,186,126 533 Consumer: Bankcard 124 79 203 8,195 8,398 79 Other consumer 17,979 2,251 20,230 1,219,315 1,239,545 1,605 Total $ 89,622 $ 62,840 $ 152,462 $ 18,266,818 $ 18,419,280 $ 15,179 Age Analysis of Past Due Loans and Leases 30-89 Days 90 Days or Total Past Current & Total Financing 90 Days or Commercial real estate: Owner-occupied $ 7,522 $ 13,325 $ 20,847 $ 1,712,329 $ 1,733,176 $ 611 Nonowner-occupied 5,791 18,829 24,620 5,932,668 5,957,288 545 Other commercial 21,444 15,883 37,327 3,425,034 3,462,361 6,569 Residential real estate 19,488 23,495 42,983 3,648,577 3,691,560 8,241 Construction & land development 6,599 3,096 9,695 2,004,470 2,014,165 383 Consumer: Bankcard 100 187 287 8,626 8,913 187 Other consumer 17,264 2,615 19,879 1,163,965 1,183,844 2,445 Total $ 78,208 $ 77,430 $ 155,638 $ 17,895,669 $ 18,051,307 $ 18,981
Schedule of Nonaccrual Loans, Segregated by Class of Loans	The following table sets forth United’s nonaccrual loans and leases, segregated by class of loans: At March 31, 2022 At December 31, 2021 Nonaccruals With No 90 Days or Nonaccruals With No 90 Days or Commercial Real Estate: Owner-occupied $ 11,919 $ 11,919 $ 271 $ 12,714 $ 12,714 $ 611 Nonowner-occupied 10,590 7,452 0 18,284 18,284 545 Other Commercial 8,396 7,333 6,326 9,314 8,261 6,569 Residential Real Estate 13,223 11,793 6,365 15,254 14,298 8,241 Construction 2,887 2,887 533 2,713 2,713 383 Consumer: Bankcard 0 0 79 0 0 187 Other consumer 646 646 1,605 170 170 2,445 Total $ 47,661 $ 42,030 $ 15,179 $ 58,449 $ 56,440 $ 18,981
Schedule of Collateral Dependent Loans and Leases	For the adoption of ASC Topic 326, 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. Collateral Dependent Loans and Leases At March 31, 2022 Residential Business Land Commercial Other Total Commercial real estate: Owner-occupied $ 0 $ 30 $ 0 $ 9,490 $ 10,194 $ 19,714 Nonowner-occupied 7,069 0 0 7,990 46,847 61,906 Other commercial 2,093 11,860 0 0 1,100 15,053 Residential real estate 16,386 0 0 0 0 16,386 Construction & land development 0 0 3,288 0 2,397 5,685 Consumer: Bankcard 0 0 0 0 0 0 Other consumer 0 0 0 0 0 0 Total $ 25,548 $ 11,890 $ 3,288 $ 17,480 $ 60,538 $ 118,744 Collateral Dependent Loans and Leases At December 31, 2021 Residential Business Land Commercial Other Total Commercial real estate: Owner-occupied $ 0 $ 38 $ 0 $ 9,775 $ 11,223 $ 21,036 Nonowner-occupied 7,085 0 703 8,665 52,299 68,752 Other commercial 2,093 15,225 0 0 732 18,050 Residential real estate 16,749 0 0 0 0 16,749 Construction & land development 0 0 4,770 0 1,103 5,873 Consumer: Bankcard 0 0 0 0 0 0 Other consumer 0 0 0 0 0 0 Total $ 25,927 $ 15,263 $ 5,473 $ 18,440 $ 65,357 $ 130,460
Schedule Of Term Loans And Financing Receivable	Based on the most recent analysis performed, the risk category of loans and leases by class of loans is as follows: Commercial Real Estate – Owner-occupied Term Loans Origination Year Revolving loans Revolving loans converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 53,351 $ 343,436 $ 294,872 $ 150,285 $ 130,636 $ 638,377 $ 36,446 $ 389 $ 1,647,792 Special Mention 0 0 0 129 2,976 20,651 950 0 24,706 Substandard 0 0 51 30 657 24,132 0 244 25,114 Doubtful 0 0 0 0 0 298 0 0 298 Total $ 53,351 $ 343,436 $ 294,923 $ 150,444 $ 134,269 $ 683,458 $ 37,396 $ 633 $ 1,697,910 Current-period charge-offs 0 0 0 0 0 (31 ) 0 0 (31 ) Current-period recoveries 0 0 0 0 0 6 0 0 6 Current-period net charge-offs $ 0 $ 0 $ 0 $ 0 $ 0 $ (25 ) $ 0 $ 0 $ (25 ) Term Loans Origination Year Revolving loans Revolving loans and leases converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 319,007 $ 310,893 $ 161,075 $ 135,472 $ 168,874 $ 539,640 $ 39,117 $ 401 $ 1,674,479 Special Mention 0 0 51 5,399 712 20,672 959 0 27,793 Substandard 0 55 38 661 1,304 27,458 839 244 30,599 Doubtful 0 0 0 0 0 305 0 0 305 Total $ 319,007 $ 310,948 $ 161,164 $ 141,532 $ 170,890 $ 588,075 $ 40,915 $ 645 $ 1,733,176 YTD charge-offs 0 0 0 0 (44 ) (370 ) 0 0 (414 ) YTD recoveries 0 0 0 0 13 856 0 0 869 YTD net charge-offs $ 0 $ 0 $ 0 $ 0 $ (31 ) $ 486 $ 0 $ 0 $ 455 Commercial Real Estate – Nonowner-occupied Term Loans Origination Year Revolving loans Revolving loans converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 363,243 $ 1,636,772 $ 865,579 $ 641,763 $ 439,994 $ 1,704,382 $ 111,896 $ 160 $ 5,763,789 Special Mention 634 0 2,934 83,137 5,762 32,705 0 0 125,172 Substandard 0 0 709 34,079 28,325 95,782 0 0 158,895 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 363,877 $ 1,636,772 $ 869,222 $ 758,979 $ 474,081 $ 1,832,869 $ 111,896 $ 160 $ 6,047,856 Current-period charge-offs 0 0 0 0 0 0 0 0 0 Current-period recoveries 0 0 0 0 0 75 0 0 75 Current-period net charge-offs $ 0 $ 0 $ 0 $ 0 $ 0 $ 75 $ 0 $ 0 $ 75 Term Loans Origination Year Revolving loans Revolving loans and converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 1,558,474 $ 925,508 $ 707,570 $ 460,660 $ 397,003 $ 1,490,548 $ 102,561 $ 2,039 $ 5,644,363 Special Mention 819 2,953 113,655 5,826 372 40,534 2,793 0 166,952 Substandard 0 714 13,042 28,411 1,095 102,711 0 0 145,973 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 1,559,293 $ 929,175 $ 834,267 $ 494,897 $ 398,470 $ 1,633,793 $ 105,354 $ 2,039 $ 5,957,288 YTD charge-offs 0 0 0 0 0 (3,531 ) 0 0 (3,531 ) YTD recoveries 0 0 0 0 0 1,907 0 0 1,097 YTD net charge-offs $ 0 $ 0 $ 0 $ 0 $ 0 $ (1,624 ) $ 0 $ 0 $ (1,624 ) Other commercial Term Loans and leases Origination Year Revolving loans Revolving loans and leases converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 372,103 $ 833,601 $ 483,501 $ 280,431 $ 98,020 $ 253,471 $ 1,013,277 $ 1,935 $ 3,336,339 Special Mention 15,000 3,428 0 1,056 2,908 30,114 76,935 55 129,496 Substandard 261 775 207 1,400 4,571 19,194 41,502 165 68,075 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 387,364 $ 837,804 $ 483,708 $ 282,887 $ 105,499 $ 302,779 $ 1,131,714 $ 2,155 $ 3,533,910 Current-period charge-offs 0 (5 ) 0 0 (9 ) (259 ) 0 0 (273 ) Current-period recoveries 0 0 0 2 705 1,442 0 0 2,149 Current-period net charge-offs $ 0 $ (5 ) $ 0 $ 2 $ 696 $ 1,183 $ 0 $ 0 $ 1,876 Term Loans and leases Origination Year Revolving loans Revolving loans and leases converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 924,726 $ 557,422 $ 306,945 $ 107,426 $ 87,090 $ 76,032 $ 1,211,865 $ 2,038 $ 3,273,544 Special Mention 1,880 0 31,614 3,012 1,801 3,390 76,987 61 118,745 Substandard 793 11 1,561 4,930 2,146 18,963 41,357 205 69,966 Doubtful 0 0 0 0 0 106 0 0 106 Total $ 927,399 $ 557,433 $ 340,120 $ 115,368 $ 91,037 $ 98,491 $ 1,330,209 $ 2,304 $ 3,462,361 YTD charge-offs 0 (87 ) (31 ) (200 ) (174 ) (5,650 ) (40 ) 0 (6,182 ) YTD recoveries 0 3 30 86 34 4,154 0 0 4,307 YTD net charge-offs $ 0 $ (84 ) $ (1 ) $ (114 ) $ (140 ) $ (1,496 ) $ (40 ) $ 0 $ (1,875 ) Residential Real Estate Term Loans Origination Year Revolving loans cost basis Revolving loans converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 117,042 $ 877,631 $ 528,389 $ 350,569 $ 284,900 $ 1,070,761 $ 440,663 $ 2,932 $ 3,672,887 Special Mention 0 0 0 0 220 5,246 2,206 0 7,672 Substandard 0 2,689 68 554 802 19,327 1,536 0 24,976 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 117,042 $ 880,320 $ 528,457 $ 351,123 $ 285,922 $ 1,095,334 $ 444,405 $ 2,932 $ 3,705,535 Current-period charge-offs 0 0 0 0 (224 ) (270 ) 0 0 (494 ) Current-period recoveries 0 0 0 0 2 878 0 0 880 Current-period net charge-offs $ 0 $ 0 $ 0 $ 0 $ (222 ) $ 608 $ 0 $ 0 $ 386 Term Loans Origination Year Revolving loans Revolving loans converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 815,693 $ 568,323 $ 383,250 $ 315,211 $ 178,101 $ 931,730 $ 455,705 $ 2,972 $ 3,650,985 Special Mention 0 0 0 223 91 12,251 2,339 0 14,904 Substandard 464 0 444 617 2,763 19,773 1,497 113 25,671 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 816,157 $ 568,323 $ 383,694 $ 316,051 $ 180,955 $ 963,754 $ 459,541 $ 3,085 $ 3,691,560 YTD charge-offs 0 0 (37 ) (38 ) (167 ) (5,774 ) 0 0 (6,016 ) YTD recoveries 0 0 0 0 3 2,384 13 0 2,400 YTD net charge-offs $ 0 $ 0 $ (37 ) $ (38 ) $ (164 ) $ (3,390 ) $ 13 $ 0 $ (3,616 ) Construction and Land Development Term Loans Origination Year Revolving loans Revolving loans converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 78,543 $ 866,127 $ 516,349 $ 261,445 $ 150,981 $ 91,506 $ 208,309 $ 0 $ 2,173,260 Special Mention 0 0 68 3,260 0 1,225 991 0 5,544 Substandard 0 304 0 341 917 5,354 406 0 7,322 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 78,543 $ 866,431 $ 516,417 $ 265,046 $ 151,898 $ 98,085 $ 209,706 $ 0 $ 2,186,126 Current-period charge-offs 0 0 0 0 0 (2 ) 0 0 (2 ) Current-period recoveries 0 0 0 0 0 184 0 0 184 Current-period net charge-offs $ 0 $ 0 $ 0 $ 0 $ 0 $ 182 $ 0 $ 0 $ 182 Term Loans Origination Year Revolving loans Revolving loans converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 767,351 $ 518,291 $ 278,020 $ 152,062 $ 18,371 $ 74,532 $ 192,421 $ 0 $ 2,001,048 Special Mention 0 69 3,261 0 0 1,237 995 0 5,562 Substandard 332 0 280 925 0 5,272 746 0 7,555 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 767,683 $ 518,360 $ 281,561 $ 152,987 $ 18,371 $ 81,041 $ 194,162 $ 0 $ 2,014,165 YTD charge-offs 0 0 0 0 (177 ) (383 ) 0 0 (560 ) YTD recoveries 0 0 0 0 133 471 0 0 604 YTD net charge-offs $ 0 $ 0 $ 0 $ 0 $ (44 ) $ 88 $ 0 $ 0 $ 44 Bankcard Term Loans Origination Year Revolving loans Revolving loans converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 8,194 $ 0 $ 8,194 Special Mention 0 0 0 0 0 0 124 0 124 Substandard 0 0 0 0 0 0 80 0 80 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 8,398 $ 0 $ 8,398 Current-period charge-offs 0 0 0 0 0 0 (143 ) 0 (143 ) Current-period recoveries 0 0 0 0 0 0 1 0 1 Current-period net charge-offs $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ (142 ) $ 0 $ (142 ) Term Loans Origination Year Revolving loans Revolving loans converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 8,626 $ 0 $ 8,626 Special Mention 0 0 0 0 0 0 100 0 100 Substandard 0 0 0 0 0 0 187 0 187 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 8,913 $ 0 $ 8,913 YTD charge-offs 0 0 0 0 0 0 (190 ) 0 (190 ) YTD recoveries 0 0 0 0 0 42 0 42 YTD net charge-offs $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ (148 ) $ 0 $ (148 ) Other Consumer Term Loans Origination Year Revolving loans Revolving loans converted to Total As of March 31, 2022 2022 2021 2020 2019 2018 Prior Internal Risk Grade: Pass $ 197,844 $ 458,116 $ 264,408 $ 204,698 $ 102,665 $ 8,512 $ 3,284 $ 0 $ 1,239,527 Special Mention 0 0 0 2 0 9 7 0 18 Substandard 0 0 0 0 0 0 0 0 0 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 197,844 $ 458,116 $ 264,408 $ 204,700 $ 102,665 $ 8,521 $ 3,291 $ 0 $ 1,239,545 Current-period charge-offs 0 (135 ) (181 ) (117 ) (47 ) (52 ) (1 ) 0 (533 ) Current-period recoveries 0 1 19 46 26 69 0 0 161 Current-period net charge-offs $ 0 $ (134 ) $ (162 ) $ (71 ) $ (21 ) $ 17 $ (1 ) $ 0 $ (372 ) Term Loans Origination Year Revolving loans Revolving loans converted to Total As of December 31, 2021 2021 2020 2019 2018 2017 Prior Internal Risk Grade: Pass $ 479,933 $ 299,582 $ 237,742 $ 121,924 $ 30,288 $ 10,878 $ 3,475 $ 0 $ 1,183,822 Special Mention 0 0 2 1 0 10 8 0 21 Substandard 0 1 0 0 0 0 0 0 1 Doubtful 0 0 0 0 0 0 0 0 0 Total $ 479,933 $ 299,583 $ 237,744 $ 121,925 $ 30,288 $ 10,888 $ 3,483 $ 0 $ 1,183,844 YTD charge-offs (101 ) (776 ) (709 ) (483 ) (126 ) (203 ) (6 ) 0 (2,404 ) YTD recoveries 5 86 51 101 18 186 2 0 449 YTD net charge-offs $ (96 ) $ (690 ) $ (658 ) $ (382 ) $ (108 ) $ (17 ) $ (4 ) $ 0 $ (1,955 )

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Schedule Of Credit Losses Related To Accrued Interest Receivables and Written Off	The following table represents the accrued interest receivable as of March 31, 2022 and December 31, 2021: Accrued Interest Receivable At March 31, 2022 At December 31, 2021 Commercial Real Estate: Owner-occupied $ 3,742 $ 4,172 Nonowner-occupied 17,305 14,901 Other Commercial 8,544 9,335 Residential Real Estate 9,205 10,347 Construction 7,337 7,411 Consumer: Bankcard 0 0 Other consumer 2,631 2,871 $ 48,764 $ 49,037 Less: Allowance for credit losses (0 ) (8 ) Total $ 48,764 $ 49,029
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 three months ended March 31, 2022 and 2021: Accrued Interest Receivables Written Off Three Months Ended March 31 2022 2021 Commercial Real Estate: Owner-occupied $ 0 $ 1 Nonowner-occupied 0 36 Other Commercial 1 6 Residential Real Estate 20 28 Construction 0 0 Consumer: Bankcard 0 0 Other consumer 67 64 Total $ 88 $ 135
Schedule of Allowance for Loan Losses and Carrying Amount of Loans	A progression of the allowance for loan and lease 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 Three Months Ended March 31, 2022 Commercial Real Estate Other Residential Construction & Land Bankcard Other Allowance Total Owner- Nonowner- Allowance for Loan and Lease Losses: Beginning balance $ 14,443 $ 42,156 $ 78,432 $ 26,404 $ 39,395 $ 317 $ 14,869 $ 0 $ 216,016 Charge-offs (31 ) (0 ) (273 ) (494 ) (2 ) (143 ) (533 ) 0 (1,476 ) Recoveries 6 75 2,149 880 184 1 161 0 3,456 Provision (1,059 ) (5,566 ) 179 319 2,002 146 577 0 (3,402 ) Ending balance $ 13,359 $ 36,665 $ 80,487 $ 27,109 $ 41,579 $ 321 $ 15,074 $ 0 $ 214,594 Allowance for Loan and Lease Losses and Carrying Amount of Loans and Leases For the Year Ended December 31, 2021 Commercial Real Estate Other Residential Construction & Land Bankcard Other Allowance Total Owner- Nonowner- Allowance for Loan and Lease Losses: Beginning balance $ 23,354 $ 49,150 $ 78,138 $ 29,125 $ 39,077 $ 322 $ 16,664 $ 0 $ 235,830 Allowance for PCD loans (acquired during the period) 1,241 4,363 5,009 1,192 823 0 1 0 12,629 Charge-offs (414 ) (3,531 ) (6,182 ) (6,016 ) (560 ) (190 ) (2,404 ) 0 (19,297 ) Recoveries 869 1,907 4,307 2,400 604 42 449 0 10,578 Provision (10,607 ) (9,733 ) (2,840 ) (297 ) (549 ) 143 159 0 (23,724 ) Ending balance $ 14,443 $ 42,156 $ 78,432 $ 26,404 $ 39,395 $ 317 $ 14,869 $ 0 $ 216,016

Intangible Assets (Tables)

Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2022
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: March 31, 2022 Community Banking Mortgage Banking Total Gross Accumulated Gross Accumulated Gross Accumulated Amortized intangible assets: Core deposit intangible assets $ 105,165 ($ 83,407 ) $ 0 $ 0 $ 105,165 ($ 83,407 ) Non-amortized George Mason trade name $ 0 $ 1,080 $ 1,080 Crescent trade name 0 196 196 Total $ 0 $ 1,276 $ 1,276 Goodwill not subject to amortization $ 1,883,929 $ 5,315 $ 1,889,244 December 31, 2021 Community Banking Mortgage Banking Total Gross Accumulated Gross Accumulated Amortization Gross Carrying Amount Accumulated Amortization Amortized intangible assets: Core deposit intangible assets $ 105,165 ( $ 82,028 ) $ 0 $ 0 $ 105,165 ( $ 82,028 ) Non-amortized George Mason trade name $ 0 $ 1,080 $ 1,080 Crescent trade name 0 196 196 Total $ 0 $ 1,276 $ 1,276 Goodwill not subject to amortization $ 1,881,179 $ 5,315 $ 1,886,494
Reconciliation of Goodwill	The following table provides a reconciliation of goodwill: Community Mortgage Total Goodwill at December 31, 2021 $ 1,881,179 $ 5,315 $ 1,886,494 Addition 2,750 0 2,750 Goodwill at March 31, 2022 $ 1,883,929 $ 5,315 $ 1,889,244
Schedule of Anticipated Amortization Expense	The following table sets forth the anticipated amortization expense for intangible assets for the years subsequent to 2021: Year Amount 2022 $ 5,516 2023 5,116 2024 3,639 2025 3,282 2026 2,758 2027 and thereafter 2,826

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	3 Months Ended
	Mar. 31, 2022
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 three months ended March 31, 2022 and 2021: Three Months Ended March 31, 2022 Three Months Ended March 31, 2021 MSRs beginning balance $ 24,027 $ 22,338 Amount capitalized 687 3,224 Amount amortized (1,625 ) (2,161 ) MSRs ending balance $ 23,089 $ 23,401 MSRs valuation allowance beginning balance $ (883 ) $ (1,383 ) Aggregate additions charged and recoveries credited to operations 883 0 MSRs impairment (0 ) (0 ) MSRs valuation allowance ending balance $ (0 ) $ (1,383 ) MSRs, net of valuation allowance $ 23,089 $ 22,018

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Components of Lease Expense	The components of lease expense were as follows: Three Months Ended Classification March 31, 2022 March 31, 2021 Operating lease cost Net occupancy expense $ 5,129 $ 5,349 Sublease income Net occupancy expense (168 ) (297 ) Net lease cost $ 4,961 $ 5,052
Supplemental Balance Sheet Information Related to Leases	Supplemental balance sheet information related to leases was as follows: Classification March 31, 2022 December 31, 2021 Operating lease right-of-use Operating lease right-of-use $ 77,097 $ 81,942 Operating lease liabilities Operating lease liabilities $ 81,678 $ 86,703
Other Information Related to Leases	Other information related to leases was as follows: March 31, 2022 Weighted-average remaining lease term: Operating leases 6.83 years Weighted-average discount rate: Operating leases 2.12 %
Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases was as follows: Three Months Ended March 31, 2022 March 31, 2021 Cash paid for amounts in the measurement of lease liabilities: Operating cash flows from operating leases $ 5,310 $ 5,446 ROU assets obtained in the exchange for lease liabilties 1,601 4,443
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, 2021, consists of the following as of March 31, 2022: Year Amount 2022 $ 14,371 2023 17,243 2024 12,382 2025 9,256 2026 7,947 Thereafter 26,324 Total lease payments 87,523 Less: imputed interest (5,845 ) Total $ 81,678

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	3 Months Ended
	Mar. 31, 2022
Funds Purchased and Securities Sold Under Agreements to Repurchase and Weighted-Average Interest Rates	At March 31, 2022 and December 31, 2021, short-term borrowings were as follows: As of March 31, 2022 As of December 31, 2021 Federal funds purchased $ 0 $ 0 Securities sold under agreements to repurchase 136,370 128,844 Total short-term borrowings $ 136,370 $ 128,844

Long-Term Borrowings (Tables)

Long-Term Borrowings (Tables)	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Schedule of Maturities of Long-term Borrowings	The scheduled maturities of these FHLB borrowings are as follows: Year Amount 2022 $ 520,625 2023 0 2024 0 2025 10,990 2026 and thereafter 0 Total $ 531,615

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2022
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 March 31, 2022 and December 31, 2021. Asset Derivatives March 31, 2022 December 31, 2021 Balance Sheet Location Notional Amount Fair Value Balance Sheet Location Notional Amount Fair Value Derivatives designated as hedging instruments Fair Value Hedges: Interest rate swap contracts (hedging commercial loans) Other assets $ 44,167 $ 136 Other assets $ 0 $ 0 Total Fair Value Hedges $ 44,167 $ 136 $ 0 $ 0 Cash Flow Hedges: Interest rate swap contracts (hedging FHLB borrowings) Other assets $ 500,000 $ 44,364 Other assets $ 500,000 $ 21,328 Total Cash Flow Hedges $ 500,000 $ 44,364 $ 500,000 $ 21,328 Total derivatives designated as hedging instruments $ 544,167 $ 44,500 $ 500,000 $ 21,328 Derivatives not designated as hedging instruments Forward loan sales commitments Other assets $ 0 $ 0 Other assets $ 33,349 $ 430 TBA mortgage-backed securities Other assets 546,450 11,067 Other assets 133,747 127 Interest rate lock commitments Other assets 316,944 5,984 Other assets 467,472 10,380 Total derivatives not designated as hedging instruments $ 863,394 $ 17,051 $ 634,568 $ 10,937 Total asset derivatives $ 1,407,561 $ 61,551 $ 1,134,568 $ 32,265 Liability Derivatives March 31, 2022 December 31, 2021 Balance Sheet Location Notional Amount Fair Value Balance Sheet Location Notional Amount Fair Value Derivatives designated as hedging instruments Fair Value Hedges: Interest rate swap contracts (hedging commercial loans) Other liabilities $ 14,144 $ 84 Other liabilities $ 72,447 $ 3,197 Total Fair Value Hedges $ 14,144 $ 84 $ 72,447 $ 3,197 Total derivatives designated as hedging instruments $ 14,144 $ 84 $ 72,447 $ 3,197 Liability Derivatives March 31, 2022 December 31, 2021 Balance Sheet Location Notional Amount Fair Value Balance Sheet Location Notional Amount Fair Value Derivatives not designated as hedging instruments Forward loan sales commitments Other liabilities $ 38,757 $ 655 Other liabilities $ 15,005 $ 36 TBA mortgage-backed securities Oth er liabilities 0 0 Other liabilities 550,000 470 Interest rate lock commitments Other liabilities 412,808 4,867 Other liabilities 24,743 25 Total derivatives not designated as hedging instruments $ 451,565 $ 5,522 $ 589,748 $ 531 Total liability derivatives $ 465,709 $ 5,606 $ 662,195 $ 3,728
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 March 31, 2022 and December 31, 2021. Derivatives in Fair Value Hedging Relationships Location in the Statement Condition March 31, 2022 Carrying Amount of Hedged Cumulative Amount of Fair Cumulative Amount of Fair Interest rate swaps Loans, net of unearned income $ 59,047 $ 53 $ 0 Derivatives in Fair Value Hedging Relationships Location in the Statement December 31, 2021 Carrying Amount of Hedged Cumulative Amount of Fair Cumulative Amount of Fair Interest rate swaps Loans, net of unearned income $ 73,232 $ (3,197) $ 0
Schedule of Derivative Financial Instruments on Statement of Income	The effect of United’s derivative financial instruments on its unaudited Consolidated Statements of Income for the three months ended March 31, 2022 and 2021 are presented as follows: Three Months Ended Income Statement Location March 31, March 31, Derivatives in hedging relationships Fair Value Hedges: Interest rate swap contracts Interest and fees on loans $ (601 ) $ (235 ) Cash flow Hedges: Interest rate swap contracts Interest on long-term borrowings $ (342 ) $ (223 ) Total derivatives in hedging relationships $ (943 ) $ (458 ) Three Months Ended Income Statement Location March 31, March 31, Derivatives not designated as hedging instruments Forward loan sales commitments Income from Mortgage Banking Activities $ (1,049 ) $ (2,990 ) TBA mortgage-backed securities Income from Mortgage Banking Activities 11,410 24,163 Interest rate lock commitments Income from Mortgage Banking Activities (3,704 ) (6,991 ) Total derivatives not designated as hedging instruments $ 6,657 $ 14,182 Total derivatives $ 5,714 $ 13,724

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value	The following tables present the balances of financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2022 and December 31, 2021, segregated by the level of the valuation inputs within the fair value hierarchy. Description Balance as of March 31, 2022 Fair Value at March 31, 2022 Using 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 $ 371,392 $ 0 $ 371,392 $ 0 State and political subdivisions 795,512 0 795,512 0 Residential mortgage-backed securities Agency 1,389.535 0 1,389,535 0 Non-agency 100,097 0 100,097 0 Commercial mortgage-backed securities Agency 627,168 0 627,168 0 Asset-backed securities 843,999 0 843,999 0 Single issue trust preferred securities 16,669 0 16,669 0 Other corporate securities 616,562 5,608 610,954 0 Total available for sale securities 4,760,934 5,608 4,755,326 0 Equity securities: Financial services industry 205 205 0 0 Equity mutual funds (1) 6,611 6,611 0 0 Other equity securities 5,541 5,541 0 0 Total equity securities 12,357 12,357 0 0 Loans held for sale 340,040 0 31,690 308,350 Derivative financial assets: Interest rate swap contracts 44,500 0 44,500 0 Forward sales commitments 0 0 0 0 TBA mortgage-backed securities 11,067 0 1,932 9,135 Description Balance as of March 31, 2022 Fair Value at March 31, 2022 Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Interest rate lock commitments 5,984 0 192 5,792 Total derivative financial assets 61,551 0 46,624 14,927 Liabilities Derivative financial liabilities: Interest rate swap contracts 84 0 84 0 Forward sales commitments 655 0 258 397 TBA mortgage-backed securities 0 0 0 0 Interest rate lock commitments 4,867 0 169 4,698 Total derivative financial liabilities 5,606 0 511 5,095 Fair Value at December 31, 2021 Using Description Balance as of December 31, 2021 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 $ 81,850 $ 0 $ 81,850 $ 0 State and political subdivisions 847,298 0 847,298 0 Residential mortgage-backed securities Agency 1,113,774 0 1,113,774 0 Non-agency 74,545 0 74,545 0 Commercial mortgage-backed securities Agency 639,925 0 639,925 0 Asset-backed securities 656,572 0 656,572 0 Single issue trust preferred securities 16,811 0 16,811 0 Other corporate securities 611,924 5,758 606,166 0 Total available for sale securities 4,042,699 5,758 4,036,941 0 Equity securities: Financial services industry 187 187 0 0 Equity mutual funds (1) 6,406 6,406 0 0 Other equity securities 5,811 5,811 0 0 Total equity securities 12,404 12,404 0 0 Loans held for sale 504,416 0 40,307 464,109 Derivative financial assets: Interest rate swap contracts 21,328 0 21,328 0 Forward sales commitments 430 0 430 0 TBA mortgage-backed securities 127 0 66 61 Interest rate lock commitments 10,380 0 936 9,444 Total derivative financial assets 32,265 0 22,760 9,505 Liabilities Derivative financial liabilities: Interest rate swap contracts 3,197 0 3,197 0 Forward sales commitments 36 0 0 36 TBA mortgage-backed securities 470 0 0 470 Interest rate lock commitments 25 0 0 25 Total derivative financial liabilities 3,728 0 3,197 531
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 March 31, 2022 and December 31, 2021 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. Loans held for sale March 31, 2022 December 31, Balance, beginning of period $ 464,109 $ 654,733 Originations 803,186 4,984,363 Sales (975,130 ) (5,313,758 ) Total gains or losses during the period recognized in earnings 16,185 138,771 Balance, end of period $ 308,350 $ 464,109 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 $ (1,295 ) $ 10,506 Derivative Financial Assets TBA Securities March 31, 2022 December 31, Balance, beginning of period $ 61 $ 0 Transfers other 9,074 61 Balance, end of period $ 9,135 $ 61 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 $ 9,135 $ 61 Derivative Financial Assets Interest Rate Lock March 31, 2022 December 31, Balance, beginning of period $ 9,444 $ 32,011 Transfers other (3,652 ) (22,567 ) Balance, end of period $ 5,792 $ 9,444 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 $ 5,792 $ 9,444 Derivative Financial Liabilities Forward Sales Commitments March 31, 2022 December 31, Balance, beginning of period $ 36 $ 0 Transfers other 361 36 Balance, end of period $ 397 $ 36 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 $ 397 $ 36 Derivative Financial Liabilities TBA Securities March 31, 2022 December 31, Balance, beginning of period $ 470 $ 0 Transfers other (470 ) 470 Balance, end of period $ 0 $ 470 The amount of total gains for the period included in earnings (or $ 0 $ 470 Derivative Financial Liabilities Interest Rate Lock Commitments March 31, 2022 December 31, Balance, beginning of period $ 25 $ 0 Transfers other 4,673 25 Balance, end of period $ 4,698 $ 25 The amount of total gains for the period included in earnings (or $ 4,698 $ 25
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: Description Three Months Ended March 31, 2022 Three Months Ended March 31, 2021 Income from mortgage banking activities $ (11,882 ) $ (17,851 )
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: March 31, 2022 December 31, 2021 Description Unpaid Fair Fair Value Unpaid Fair Value Fair Value Loans held for sale $ 341,284 $ 340,040 $ (1,244 ) $ 493,340 $ 504,416 $ 11,076
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: Description Balance as of March 31, 2022 Carrying value at March 31, 2022 YTD Gains (Losses) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Individually assessed loans $ 24,261 $ 0 $ 8,393 $ 15,868 $ (255 ) OREO 13,641 0 13,475 166 (75 ) Mortgage servicing rights 37,740 0 0 37,740 883 Description Balance as of December 31, 2021 Carrying value at December 31, 2021 YTD (Losses) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets Individually assessed loans $ 65,431 $ 0 $ 46,830 $ 18,601 $ (601 ) OREO 14,823 0 3,209 11,614 (4,020 ) Mortgage servicing rights 27,355 0 0 27,355 (629 )
Summary of Estimated Fair Values of Financial Instruments	The estimated fair values of United’s financial instruments are summarized below: Fair Value Measurements Carrying Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) March 31, 2022 Cash and cash equivalents $ 2,803,093 $ 2,803,093 $ 0 $ 2,803,093 $ 0 Securities available for sale 4,760,934 4,760,934 5,608 4,755,326 0 Securities held to maturity 1,001 1,020 0 0 1,020 Equity securities 12,357 12,357 12,357 0 0 Other securities 246,420 234,099 0 0 234,099 Loans held for sale 340,040 340,040 0 31,690 308,350 Net loans 18,177,492 17,323,530 0 0 17,323,530 Derivative financial assets 61,551 61,551 0 46,624 14,927 Mortgage servicing rights 23,089 37,740 0 0 37,740 Deposits 23,474,301 23,455,019 0 0 23,455,019 Short-term borrowings 136,370 136,370 0 136,370 0 Long-term borrowings 817,235 775,896 0 775,896 0 Derivative financial liabilities 5,606 5,606 0 511 5,095 Fair Value Measurements 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, 2021 Cash and cash equivalents $ 3,758,170 $ 3,758,170 $ 0 $ 3,758,170 $ 0 Securities available for sale 4,042,699 4,042,699 5,758 4,036,941 0 Securities held to maturity 1,001 1,020 0 0 1,020 Equity securities 12,404 12,404 12,404 0 0 Other securities 239,645 227,663 0 0 227,663 Loans held for sale 504,416 504,416 0 40,307 464,109 Net loans 17,807,632 17,119,202 0 0 17,119,202 Derivative financial assets 32,265 32,265 0 22,760 9,505 Mortgage servicing rights 23,144 27,355 0 0 27,355 Deposits 23,350,263 23,334,431 0 23,334,431 0 Short-term borrowings 128,844 128,844 0 128,844 0 Long-term borrowings 817,394 773,291 0 773,291 0 Derivative financial liabilities 3,728 3,728 0 3,197 531

Stock Based Compensation (Table

Stock Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2022
Summary of Stock Option Plans	A summary of activity under United’s stock option plans as of March , , and the changes during the first three months of are presented below: Three Months Ended March 31, 2022 Shares Aggregate Weighted Average Remaining Exercise Price Outstanding at January 1, 2022 2,149,117 $ 32.01 Exercised (258,574 ) 22.37 Forfeited or expired (82,088 ) 29.51 Outstanding at March 31, 2022 1,808,455 $ 6,720 5.0 $ 33.50 Exercisable at March 31, 2022 1,637,092 $ 6,449 4.7 $ 33.40
Changes to United's Restricted Common Shares	The following summarizes the changes to United’s nonvested restricted common shares for the period ended March 31, 2022: Shares Weighted-Average Nonvested at January 1, 2022 383,971 $ 35.21 Granted 154,568 36.26 Vested (149,811 ) 35.79 Forfeited (6,212 ) 35.85 Nonvested at March 31, 2022 382,516 $ 35.40
Status of United's Nonvested Stock Option Awards	The following table summarizes the status of United’s nonvested stock option awards during the first three months of 2022: Shares Weighted-Average Nonvested at January 1, 2022 395,034 $ 7.33 Vested (215,926 ) 8.11 Forfeited or expired (7,745 ) 11.35 Nonvested at March 31, 2022 171,363 $ 6.16
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 first three months of 2022: Shares Weighted-Average Nonvested at January 1, 2022 136,896 $ 35.65 Granted 147,511 35.46 Vested (18,248 ) 37.05 Nonvested at March 31, 2022 266,159 $ 35.45

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2022
Retirement Benefits [Abstract]
Net Periodic Pension Cost	Net periodic pension cost for the three months ended March 31, 2022 and 2021 included the following components: Three Months Ended March 31 2022 2021 Service cost $ 703 $ 750 Interest cost 1,208 1,020 Expected return on plan assets (3,193 ) (2,924 ) Recognized net actuarial loss 824 1,572 Net periodic pension (benefit) cost $ (458 ) $ 418 Weighted-Average Assumptions: Discount Rate 3.08 % 2.81 % Expected return on assets 6.25 % 6.25 % Rate of Compensation Increase (prior to age 40) 5.00 % 5.00 % Rate of Compensation Increase (ages 40-54) 4.00 % 4.00 % Rate of Compensation Increase (prior to age 45) n/ n/ Rate of Compensation Increase (otherwise) 3.50 % 3.50 %

Comprehensive Income (Tables)

Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Components of Total Comprehensive Income	The components of total comprehensive income for the three months ended March 31, 2022 and 2021 are as follows: Three Months Ended March 31 2022 2021 Net Income $ 81,664 $ 106,898 Available for sale (“AFS”) securities: Change in net unrealized loss on AFS securities arising during the period (202,234 ) (45,967 ) Related income tax effect 47,121 10,710 Net reclassification adjustment for gains included in net income (0 ) (1,444 ) Related income tax effect 0 336 (155,113 ) (36,365 ) Net effect of AFS securities on other comprehensive income (155,113 ) (36,365 ) Cash flow hedge derivatives: Unrealized gain on cash flow hedge before reclassification to interest expense 22,694 19,317 Related income tax effect (5,288 ) (4,501 ) Net reclassification adjustment for losses included in net income 342 223 Related income tax effect (80 ) (52 ) Net effect of cash flow hedge derivatives on other comprehensive income 17,668 14,987 Pension plan: Recognized net actuarial loss 824 1,572 Related income tax benefit (183 ) (703 ) Net effect of change in pension plan asset on other comprehensive income 641 869 Total change in other comprehensive income (136,804 ) (20,509 ) Total Comprehensive Income $ (55,140 ) $ 86,389
Components of Accumulated Other Comprehensive Income	The components of accumulated other comprehensive income for the three months ended March 31, 2022 are as follows: Changes in Accumulated Other Comprehensive Income (AOCI) by Component (a) For the Three Months Ended March 31, 2022 Unrealized Unrealized Defined Items Total Balance at January 1, 2022 $ 8,594 $ 16,359 $ (29,841 ) $ (4,888 ) Other comprehensive income before reclassification (155,113 ) 17,406 0 (137,707 ) Amounts reclassified from accumulated other comprehensive income (0 ) 262 641 903 Net current-period other comprehensive income, net of tax (155,113 ) 17,668 641 (136,804 ) Balance at March 31, 2022 $ (146,519 ) $ 34,027 $ (29,200 ) $ (141,692 ) (a) All amounts are net-of-tax.
Reclassifications Out of Accumulated Other Comprehensive Income	Reclassifications out of Accumulated Other Comprehensive Income (AOCI) For the Three Months Ended March 31, 2022 Details about AOCI Components Amount Affected Line Item in the Statement Where Net Income is Presented Available for sale (“AFS”) securities: Net reclassification adjustment for gains included in net income $ (0 ) Net investment securities gains (0 ) Total before tax Related income tax effect 0 Income taxes (0 ) Net of tax Cash flow hedge: Net reclassification adjustment for losses included in net income $ 342 Interest expense 342 Total before tax Related income tax effect (80 ) Income taxes 262 Net of tax Pension plan: Recognized net actuarial loss 824 (a) 824 Total before tax Related income tax effect (183 ) Income taxes 641 Net of tax Total reclassifications for the period $ 903 (a) This AOCI component is included in the computation of changes in plan assets (see Note 16, Employee Benefit Plans)

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Information Related to Statutory Trusts	Information related to United’s statutory trusts is presented in the table below: Description Issuance Date Amount of Stated Interest Rate Maturity Date United Statutory Trust III December 17, 2003 $ 20,000 3-month December 17, 2033 United Statutory Trust IV December 19, 2003 $ 25,000 3-month January 23, 2034 United Statutory Trust V July 12, 2007 $ 50,000 3-month October 1, 2037 United Statutory Trust VI September 20, 2007 $ 30,000 3-month December 15, 2037 Premier Statutory Trust II September 25, 2003 $ 6,000 3-month October 8, 2033 Premier Statutory Trust III May 16, 2005 $ 8,000 3-month June 15, 2035 Premier Statutory Trust IV June 20, 2006 $ 14,000 3-month September 23, 2036 Premier Statutory Trust V December 14, 2006 $ 10,000 3-month March 1, 2037 Centra Statutory Trust I September 20, 2004 $ 10,000 3-month September 20, 2034 Centra Statutory Trust II June 15, 2006 $ 10,000 3-month July 7, 2036 Virginia Commerce Trust II December 19, 2002 $ 15,000 6-month December 19, 2032 Virginia Commerce Trust III December 20, 2005 $ 25,000 3-month February 23, 2036 Cardinal Statutory Trust I July 27, 2004 $ 20,000 3-month September 15, 2034 UFBC Capital Trust I December 30, 2004 $ 5,000 3-month March 15, 2035 Carolina Financial Capital Trust I December 19, 2002 $ 5,000 Prime + 0.50% December 31, 2032 Description Issuance Date Amount of Stated Interest Rate Maturity Date Carolina Financial Capital Trust II November 5, 2003 $ 10,000 3-month January 7, 2034 Greer Capital Trust I October 12, 2004 $ 6,000 3-month October 18, 2034 Greer Capital Trust II December 28, 2006 $ 5,000 3-month January 30, 2037 First South Preferred Trust I September 26, 2003 $ 10,000 3-month September 30, 2033 BOE Statutory Trust I December 12, 2003 $ 4,000 3-month December 12, 2033
Summary of Quantitative Information Related to Significant Involvement in Unconsolidated Variable Interest Entities	The following table summarizes quantitative information about United’s significant involvement in unconsolidated VIEs: As of March 31, 2022 As of December 31, 2021 Aggregate Assets Aggregate Liabilities Risk Of Loss (1) Aggregate Assets Aggregate Liabilities Risk Of Loss (1) Trust preferred securities $ 299,720 $ 288,653 $ 11,067 $ 299,531 $ 288,499 $ 11,032 (1) Represents investment in VIEs.

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2022
Segment Reporting [Abstract]
Summary of Segment Reporting Information	Information about the reportable segments and reconciliation of this information to the consolidated financial statements at and for the three months ended March 31, 2022 and 2021 is as follows: At and For the Three Months Ended March 31, 2022 Community Mortgage Other Intersegment Eliminations Consolidated Net interest income $ 189,682 $ 2,317 $ (2,125 ) $ 1,628 $ 191,502 Provision for credit losses (3,410 ) 0 0 0 (3,410 ) Other income 24,899 23,397 (60 ) (2,213 ) 46,023 Other expense 114,537 25,448 (227 ) (585 ) 139,173 Income taxes 20,429 57 (388 ) 0 20,098 Net income (loss) $ 83,025 $ 209 $ (1,570 ) $ 0 $ 81,664 Total assets (liabilities) $ 29,030,100 $ 589,503 $ 39,940 $ (294,032 ) $ 29,365,511 Average assets (liabilities) 29,023,901 475,243 33,357 (187,979 ) 29,344,522 At and For the Three Months Ended March 31, 2021 Community Mortgage Other Intersegment Eliminations Consolidated Net interest income $ 187,197 $ 2,650 $ (2,138 ) $ 3,251 $ 190,960 Provision for credit losses 143 0 0 0 143 Other income 26,388 67,507 1,521 (2,843 ) 92,573 Other expense 110,017 41,183 (2,681 ) 408 148,927 Income taxes 21,202 5,940 423 0 27,565 Net income (loss) $ 82,223 $ 23,034 $ 1,641 $ 0 $ 106,898 Total assets (liabilities) $ 26,625,449 $ 930,481 $ 40,862 $ (566,037 ) $ 27,030,755 Average assets (liabilities) 26,154,094 716,744 23,029 (402,751 ) 26,491,116

Mergers and Acquisitions - Addi

Mergers and Acquisitions - Additional Information (Detail) $ / shares in Units, $ in Thousands	Dec. 03, 2021USD ($)$ / sharesshares	Mar. 31, 2022USD ($)	Dec. 31, 2021USD ($)$ / shares
Business Acquisition [Line Items]
Stock issued during period merger conversion ratio	0.3173
Par value of Share | $ / shares			$ 2.50
Loans at consummation		$ 18,419,280	$ 18,051,307
Business combination purchase consideration equity shares issued or issuable value	$ 252,321
Business acquisition allowances for loans and lease losses including reserve for unfunded commitments for assets with credit deterioration			12,629
Loans and leases net of unearned income		18,392,086	$ 18,023,648
Carolina Financial [Member]
Business Acquisition [Line Items]
Stock issued during period merger conversion ratio	0.3173
Community Bankers Trust Corporation [Member]
Business Acquisition [Line Items]
Business Acquisition, Share Price | $ / shares	$ 35.36
Loans at consummation		1,788,230
Deposits at consummation		1,517,502
Business combination aggregate purchase consideration	$ 260,304
Business combination purchase consideration equity shares issued or issuable value	252,321
Business combination stock options issued	$ 7,958
Business combination number of shares issued | shares	7,135,771
Business combination cash consideration	$ 25
Business combination intangible assets acquired goodwill	79,204	$ 2,750
Business combination intangible assets acquired other than goodwill indefinite lived	3,398
Business acquisition weighted average remaining useful life of purchase credit deterioration of loans		5 years 6 months
Business acquisition weighted average remaining useful life of non purchase credit deterioration of loans		5 years 7 months 6 days
Business acquisition revenue of the acquiree included in the total revenue since the date of acquisition	9,805
Business acquisition net income of the acquiree included in the total revenue since the date of acquisition	6,096
Loans and leases net of unearned income		$ 1,282,997
Community Bankers Trust Corporation [Member] | Including Unfunded Commitements [Member]
Business Acquisition [Line Items]
Business acquisition allowances for loans and lease losses including reserve for unfunded commitments	25,920
Business acquisition allowances for loans and lease losses including reserve for unfunded commitments for assets with credit deterioration	12,788
Community Bankers Trust Corporation [Member] | Securities Investment [Member]
Business Acquisition [Line Items]
Business combination fair value adjustment to purchase consideration	230
Community Bankers Trust Corporation [Member] | Loans And Leases [Member]
Business Acquisition [Line Items]
Business combination fair value adjustment to purchase consideration	7,744
Business acquisition loans purchase deterioration credit loans acquired discount due to diiferences in purchase consideration	3,559
Business acquisition allowances for loans and lease losses including reserve for unfunded commitments for assets with credit deterioration	12,629
Community Bankers Trust Corporation [Member] | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration [Member]
Business Acquisition [Line Items]
Business acquisition increase in expected credit losses	12,288
Community Bankers Trust Corporation [Member] | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration [Member] | Including Unfunded Commitements [Member]
Business Acquisition [Line Items]
Business acquisition allowances for loans and lease losses including reserve for unfunded commitments	13,132
Community Bankers Trust Corporation [Member] | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration [Member] | Loans And Leases [Member]
Business Acquisition [Line Items]
Business combination loans and leases receivable without purchased credit deterioration gross	4,186
Community Bankers Trust Corporation [Member] | Interest-bearing Deposits [Member]
Business Acquisition [Line Items]
Business combination aggregate purchase consideration	2,741
Business combination fair value adjustment to purchase consideration	492
Community Bankers Trust Corporation [Member] | Building [Member]
Business Acquisition [Line Items]
Business combination fair value adjustment to purchase consideration	6,766
Community Bankers Trust Corporation [Member] | Land [Member]
Business Acquisition [Line Items]
Business combination fair value adjustment to purchase consideration	50
Community Bankers Trust Corporation [Member] | Trust Preferred Securities Subject to Mandatory Redemption [Member]
Business Acquisition [Line Items]
Business combination fair value adjustment to purchase consideration	415
Business combination interest bearing deposits acquired remaining term on the premium paid		5 years
Community Bankers Trust Corporation [Member] | Subordinated Debt [Member]
Business Acquisition [Line Items]
Business combination unamortized discount on debt useful life		12 years
Business combination finite lived tangible assets remaining useful life on premium paid		31 years
Community Bankers Trust Corporation [Member] | Federal Home Loan Bank Advances [Member]
Business Acquisition [Line Items]
Business combination fair value adjustment to purchase consideration	$ 457
Community Bankers Trust Corporation [Member] | Common Stock [Member]
Business Acquisition [Line Items]
Par value of Share | $ / shares	$ 2.50

Mergers and Acquisitions - Summ

Mergers and Acquisitions - Summary of Reconciliation of Difference Between Purchase Price and Par Value of Purchase Credit Loans Acquired (Detail) - USD ($) $ in Thousands	Dec. 03, 2021	Dec. 31, 2021
Disclosure Detail of Reconciliation of Difference Between Purchase Price and Par Value of Purchase Credit Loans Acquired [Line Items]
Allowance for credit losses at acquisition		$ 12,629
Community Bankers Trust Corporation [Member] | Loans And Leases [Member]
Disclosure Detail of Reconciliation of Difference Between Purchase Price and Par Value of Purchase Credit Loans Acquired [Line Items]
Purchase price of PCD loans and leases at acquisition	$ 360,638
Allowance for credit losses at acquisition	12,629
Non-credit discount at acquisition	3,559
Par value (UPB) of acquired PCD loans and leases at acquisition	$ 376,826

Mergers and Acquisitions - Su_2

Mergers and Acquisitions - Summary of Business Acquisitions, by Acquisition (Detail) - USD ($) $ in Thousands	Dec. 03, 2021	Mar. 31, 2022	Dec. 31, 2021
Purchase price:
Value of common shares issued	$ 252,321
Identifiable liabilities:
Preliminary resulting goodwill		$ 1,889,244	$ 1,886,494
Community Bankers Trust Corporation [Member]
Purchase price:
Value of common shares issued	252,321
Fair value of stock options assumed	7,958
Cash for fractional shares	25
Total purchase price	260,304
Identifiable assets:
Cash and cash equivalents	39,445
Investment securities	395,249
Net loans and leases	1,280,016
Premises and equipment	25,857
Operating lease right-of-use asset	8,127
Core deposit intangible	3,398
Other assets	51,069
Total identifiable assets	1,803,161
Identifiable liabilities:
Deposits	1,520,243
Short-term borrowings	26,755
Long-term borrowings	51,500
Operating lease liability	8,127
Other liabilities	15,436
Total identifiable liabilities	1,622,061
Preliminary fair value of net assets acquired including identifiable intangible assets	181,100
Preliminary resulting goodwill	$ 79,204

Mergers and Acquisitions - Su_3

Mergers and Acquisitions - Summary of Business Acquisitions, by Acquisition (Parenthetical) (Detail)	Dec. 03, 2021shares
Community Bankers Trust Corporation [Member]
Business Acquisition [Line Items]
Business combination shares issued during the year	7,135,771

Mergers and Acquisitions - Su_4

Mergers and Acquisitions - Summary Of Operating Cost Savings And Other Business Synergies (Detail) - Community Bankers Trust Corporation [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)
Business Acquisition Proforma Information [Line Items]
Total Revenues	$ 301,478
Net Income	$ 115,211

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost and Estimated Fair Values of Available for Sale Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Investments [Line Items]
Amortized Cost	$ 4,951,963	$ 4,031,494
Gross Unrealized Gains	4,552	45,622
Gross Unrealized Losses	195,581	34,417
Allowance For Credit Losses	0	0
Estimated Fair Value	4,760,934	4,042,699
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	377,085	82,136
Gross Unrealized Gains	0	51
Gross Unrealized Losses	5,693	337
Allowance For Credit Losses	0	0
Estimated Fair Value	371,392	81,850
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Amortized Cost	838,384	831,499
Gross Unrealized Gains	1,199	19,608
Gross Unrealized Losses	44,071	3,809
Allowance For Credit Losses	0	0
Estimated Fair Value	795,512	847,298
Residential Mortgage-Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	1,472,822	1,120,423
Gross Unrealized Gains	1,002	9,173
Gross Unrealized Losses	84,289	15,822
Allowance For Credit Losses	0	0
Estimated Fair Value	1,389,535	1,113,774
Residential Mortgage-Backed Securities, Non-agency [Member]
Schedule of Investments [Line Items]
Amortized Cost	103,779	74,965
Gross Unrealized Gains	103	306
Gross Unrealized Losses	3,785	726
Allowance For Credit Losses	0	0
Estimated Fair Value	100,097	74,545
Commercial Mortgage-Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	653,526	633,802
Gross Unrealized Gains	1,121	12,731
Gross Unrealized Losses	27,479	6,608
Allowance For Credit Losses	0	0
Estimated Fair Value	627,168	639,925
Asset-backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	856,840	659,830
Gross Unrealized Gains	19	49
Gross Unrealized Losses	12,860	3,307
Allowance For Credit Losses	0	0
Estimated Fair Value	843,999	656,572
Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	17,304	17,291
Gross Unrealized Gains	141	146
Gross Unrealized Losses	776	626
Allowance For Credit Losses	0	0
Estimated Fair Value	16,669	16,811
Corporate Bonds [Member]
Schedule of Investments [Line Items]
Amortized Cost	632,223	611,548
Gross Unrealized Gains	967	3,558
Gross Unrealized Losses	16,628	3,182
Allowance For Credit Losses	0	0
Estimated Fair Value	$ 616,562	$ 611,924

Investment Securities - Summa_2

Investment Securities - Summary of Securities Available for Sale in an Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	$ 3,681,078	$ 2,010,872
Less than 12 months, Unrealized Losses	150,963	25,813
12 months or longer, Fair Value	446,845	262,031
12 months or longer, Unrealized Losses	44,618	8,604
Total, Fair Value	4,127,923	2,272,903
Total, Unrealized Losses	195,581	34,417
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	371,210	75,106
Less than 12 months, Unrealized Losses	5,690	334
12 months or longer, Fair Value	182	213
12 months or longer, Unrealized Losses	3	3
Total, Fair Value	371,392	75,319
Total, Unrealized Losses	5,693	337
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	654,992	223,754
Less than 12 months, Unrealized Losses	38,224	2,872
12 months or longer, Fair Value	41,938	24,067
12 months or longer, Unrealized Losses	5,847	937
Total, Fair Value	696,930	247,821
Total, Unrealized Losses	44,071	3,809
Residential Mortgage-Backed Securities [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	1,102,349	680,320
Less than 12 months, Unrealized Losses	62,008	13,167
12 months or longer, Fair Value	192,698	71,392
12 months or longer, Unrealized Losses	22,281	2,655
Total, Fair Value	1,295,047	751,712
Total, Unrealized Losses	84,289	15,822
Residential Mortgage-Backed Securities, Non-agency [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	75,230	55,336
Less than 12 months, Unrealized Losses	3,785	726
12 months or longer, Fair Value	0	0
12 months or longer, Unrealized Losses	0	0
Total, Fair Value	75,230	55,336
Total, Unrealized Losses	3,785	726
Commercial Mortgage-Backed Securities [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	327,316	136,071
Less than 12 months, Unrealized Losses	14,407	2,912
12 months or longer, Fair Value	97,085	70,543
12 months or longer, Unrealized Losses	13,072	3,696
Total, Fair Value	424,401	206,614
Total, Unrealized Losses	27,479	6,608
Asset-backed Securities [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	757,203	532,373
Less than 12 months, Unrealized Losses	11,156	2,620
12 months or longer, Fair Value	78,736	82,222
12 months or longer, Unrealized Losses	1,704	687
Total, Fair Value	835,939	614,595
Total, Unrealized Losses	12,860	3,307
Single Issue Trust Preferred Securities [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	13,452	13,594
12 months or longer, Unrealized Losses	776	626
Total, Fair Value	13,452	13,594
Total, Unrealized Losses	776	626
Other corporate securities [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	392,778	307,912
Less than 12 months, Unrealized Losses	15,693	3,182
12 months or longer, Fair Value	22,754	0
12 months or longer, Unrealized Losses	935	0
Total, Fair Value	415,532	307,912
Total, Unrealized Losses	$ 16,628	$ 3,182

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	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales and calls	$ 151,627	$ 269,529
Gross realized gains	0	1,542
Gross realized losses	$ 0	$ 98

Investment Securities - Additio

Investment Securities - Additional Information (Detail) Securities in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)Securities	Mar. 31, 2021USD ($)	Dec. 31, 2021USD ($)
Schedule of Investments [Line Items]
Accrued interest receivable	$ 17,425	$ 15,353
Gross unrealized losses on available for sale securities	$ 195,581		$ 34,417
Available for sale securities in unrealized loss position | Securities	1,174
Available for sale securities in portfolio, number | Securities	1,546
Amortized cost of available for sale securities	$ 4,951,963		4,031,494
Capitalization of banks, equal to or greater than, in the single-issue trust preferred portfolio	10,000,000
Equity securities at estimated fair value	12,357		12,404
Carrying value of securities pledged	$ 1,794,895		1,871,328
Fitch, AAA Rating [Member]
Schedule of Investments [Line Items]
Percentage of asset backed securities with credit rating	65.00%
Federal Family Education Loan Program [Member] | Fitch, AA+ Rating [Member]
Schedule of Investments [Line Items]
Percentage of asset backed securities with credit rating	35.00%
Percentage Of Asset Backed Securities With investment grade	100.00%
Minimum [Member] | Federal Family Education Loan Program [Member] | Fitch, AA+ Rating [Member]
Schedule of Investments [Line Items]
Percentage of repayment guaranteed by the government	97.00%
Non Agency Residential Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale securities	$ 103,779
Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale single issue trust preferred securities	8,458
Split Rated Bonds Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale single issue trust preferred securities	3,075
Unrated Bonds Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale single issue trust preferred securities	5,771
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	44,071		3,809
Amortized cost of available for sale securities	$ 838,384		831,499
Percent of portfolio with credit support	53.00%
Agency Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale securities	$ 2,126,348
Commercial Mortgage-Backed Securities [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	27,479		6,608
Amortized cost of available for sale securities	653,526		633,802
Residential Mortgage-Backed Securities [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	84,289		15,822
Amortized cost of available for sale securities	1,472,822		1,120,423
Residential Mortgage-Backed Securities, Non-agency [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	3,785		726
Amortized cost of available for sale securities	103,779		74,965
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale, Recognized in Earnings	$ 0
Residential Mortgage-Backed Securities, Non-agency [Member] | AAA [Member]
Schedule of Investments [Line Items]
Percentage of asset backed securities with credit rating	100.00%
Corporate Bonds [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	$ 16,628		3,182
Amortized cost of available for sale securities	$ 632,223		611,548
Corporate Bonds [Member] | Investment Grade [Member]
Schedule of Investments [Line Items]
Percent of corporate securities portfolio	81.00%
Percent Of Corporate Securities Portfolio	81.00%
Corporate Bonds [Member] | Below Investment Grade [Member]
Schedule of Investments [Line Items]
Percent of corporate securities portfolio	1.00%
Percent Of Corporate Securities Portfolio	1.00%
Corporate Bonds [Member] | Split Rated Bonds Investment Grade [Member]
Schedule of Investments [Line Items]
Percent of corporate securities portfolio	1.00%
Percent Of Corporate Securities Portfolio	1.00%
Corporate Bonds [Member] | Unrated Bonds Investment Grade [Member]
Schedule of Investments [Line Items]
Percent of corporate securities portfolio	17.00%
Percent Of Corporate Securities Portfolio	17.00%
Asset-backed Securities [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	$ 12,860		3,307
Amortized cost of available for sale securities	856,840		$ 659,830
Asset-backed Securities [Member] | Federal Family Education Loan Program [Member] | Fitch, AA+ Rating [Member]
Schedule of Investments [Line Items]
Impairment of investment in asset backed 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	Mar. 31, 2022	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 197,154	$ 126,032
Due after one year through five years, Amortized Cost	862,425	661,627
Due after five years through ten years, Amortized Cost	1,009,895	940,031
Due after ten years, Amortized Cost	2,882,489	2,303,804
Amortized Cost	4,951,963	4,031,494
Due in one year or less, Estimated Fair Value	197,158	126,564
Due after one year through five years, Estimated Fair Value	852,043	670,298
Due after five years through ten years, Estimated Fair Value	958,958	941,640
Due after ten years, Estimated Fair Value	2,752,775	2,304,197
Total available for sale securities	$ 4,760,934	$ 4,042,699

Investment Securities - Summa_5

Investment Securities - Summary of Equity Securities (Detail) - Marketable Equity Securities [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Net gains recognized during the period on equity securities sold	$ 0	$ 788
Unrealized gains recognized during the period on equity securities still held at period end	19	27
Unrealized losses recognized during the period on equity securities still held at period end	(270)	(105)
Net (losses) gains recognized during the period	$ (251)	$ 710

Loans and Leases - Major Classe

Loans and Leases - Major Classes of Loans And Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Commercial, financial and agricultural:
Total commercial, financial & agricultural	$ 11,279,676	$ 11,152,825
Residential real estate	3,705,535	3,691,560
Construction & land development Consumer:	2,186,126	2,014,165
Consumer:
Bankcard	8,398	8,913
Other consumer	1,239,545	1,183,844
Less: Unearned income	(27,194)	(27,659)
Total gross loans	18,392,086	18,023,648
Owner-Occupied Commercial Real Estate [Member]
Commercial, financial and agricultural:
Total commercial, financial & agricultural	1,697,910	1,733,176
Nonowner-Occupied Commercial Real Estate [Member]
Commercial, financial and agricultural:
Total commercial, financial & agricultural	6,047,856	5,957,288
Other Commercial Loans And Leases [Member]
Commercial, financial and agricultural:
Total commercial, financial & agricultural	$ 3,533,910	$ 3,462,361

Loans and Leases - Additional I

Loans and Leases - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Loans held for sale	$ 340,040	$ 504,416
Directors and Officers [Member]
Related party loans	$ 32,639	$ 32,990

Credit Quality - Schedule of Tr

Credit Quality - Schedule of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Post-Modification Outstanding Recorded Investment	$ 2,788	$ 1,859
Interest rate reduction
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Post-Modification Outstanding Recorded Investment	0	0
Interest rate reduction and change in terms
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Post-Modification Outstanding Recorded Investment	0	0
Forgiveness of principal
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Post-Modification Outstanding Recorded Investment	0	0
Concession of principal and term
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Post-Modification Outstanding Recorded Investment	0	0
Transfer of asset
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Post-Modification Outstanding Recorded Investment	0	5,407
Extended maturity
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Post-Modification Outstanding Recorded Investment	0	0
Change in terms
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Post-Modification Outstanding Recorded Investment	$ 2,788	$ 1,859

Credit Quality - Schedule of _2

Credit Quality - Schedule of Troubled Debt Restructurings, Segregated by Class of Loans (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)Contract	Mar. 31, 2021USD ($)Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1	2
Pre-Modification Outstanding Recorded Investment	$ 2,801	$ 1,877
Post-Modification Outstanding Recorded Investment	$ 2,788	$ 1,859
Construction & Land Development [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1	1
Pre-Modification Outstanding Recorded Investment	$ 2,801	$ 940
Post-Modification Outstanding Recorded Investment	$ 2,788	$ 922
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 937
Post-Modification Outstanding Recorded Investment	$ 0	$ 937
Other Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0
Consumer [Member] | Bankcard [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0

Credit Quality - Schedule of Re

Credit Quality - Schedule of Reasons For Modification Troubled Debt Restructuring Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Troubled debt restructuring	$ 30,582	$ 35,856	$ 35,856
Interest rate reduction
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Troubled debt restructuring	2,214	3,163
Interest rate reduction and change in terms
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Troubled debt restructuring	1,265	1,412
Transfer of asset
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Troubled debt restructuring	0	0
Concession of principal and term
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Troubled debt restructuring	18	19
Extended maturity
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Troubled debt restructuring	4,990	4,831
Change in terms
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Troubled debt restructuring	$ 22,095	$ 21,024

Credit Quality - Additional Inf

Credit Quality - Additional Information (Detail) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022USD ($)Contract	Mar. 31, 2021USD ($)Contract	Dec. 31, 2021USD ($)
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
Troubled debt restructuring	$ 30,582	$ 35,856	$ 35,856
Restructured loans on nonaccrual status	$ 13,568		22,421
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
OREO	$ 13,641		14,823
Recorded investment of consumer mortgage loans			13
Troubled debt restructurings post modification additional funds recorded investment	49
Payments under funding commitments	$ 61
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 or greater) and classified (substandard-rated and worse in the amount of $500 and greater) loans is completed once per quarter. Review of notes with committed exposure of $2,000 or greater is completed at least annually.
No of eligible loan modifications received | Contract	1	2
Loans Modification Explanation	This program ended on January 1, 2022. As provided for under the CARES Act, these loan modifications are exempt by law from classification as a TDR as defined by GAAP.
Mortgage Loan Related to Property Sales	$ 0
Temporary Relief from Troubled Debt Restructurings [Member] | Covid 19 [Member]
No of eligible loan modifications received	61
Restructured loans modified by temporary relief from trouble debt restructurings amount during period	$ 3,034
No of eligible loan modifications outstanding	188
Troubled debt restructuring	$ 18,039
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Restructured loans on nonaccrual status			$ 102
Financing Receivables 30 To 89 Days Past Due [Member]
Restructured loans on nonaccrual status	$ 4,882
Financial Asset, 30 to 59 Days Past Due [Member]
Financing receivable threshold period past due			90 days

Credit Quality - Schedule of Ch

Credit Quality - Schedule of Charged-off Troubled Debt Restructurings on Financing Receivables (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)Contract	Mar. 31, 2021USD ($)Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1	2
Recorded Investment | $	$ 114	$ 550
Construction & Land Development [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	2
Recorded Investment | $	$ 0	$ 550
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Recorded Investment | $	$ 0	$ 0
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Recorded Investment | $	$ 0	$ 0
Other Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1	0
Recorded Investment | $	$ 114	$ 0
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Recorded Investment | $	$ 0	$ 0
Consumer [Member] | Bankcard [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Recorded Investment | $	$ 0	$ 0
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Recorded Investment | $	$ 0	$ 0

Credit Quality - Schedule of Ag

Credit Quality - Schedule of Age Analysis of its Past Due Loans, Segregated by Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Total Financing Receivables	$ 18,419,280	$ 18,051,307
Loans, Recorded Investment >90 Days & Accruing	15,179	18,981
30-89 Days Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	89,622	78,208
90 Days or more Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	62,840	77,430
Total Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	152,462	155,638
Current & Other [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	18,266,818	17,895,669
Construction & Land Development [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Total Financing Receivables	2,186,126	2,014,165
Loans, Recorded Investment >90 Days & Accruing	533	383
Construction & Land Development [Member] | 30-89 Days Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	2,806	6,599
Construction & Land Development [Member] | 90 Days or more Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	3,420	3,096
Construction & Land Development [Member] | Total Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	6,226	9,695
Construction & Land Development [Member] | Current & Other [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	2,179,900	2,004,470
Commercial Real Estate [Member] | Owner-Occupied [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Total Financing Receivables	1,697,910	1,733,176
Loans, Recorded Investment >90 Days & Accruing	271	611
Commercial Real Estate [Member] | Owner-Occupied [Member] | 30-89 Days Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	8,569	7,522
Commercial Real Estate [Member] | Owner-Occupied [Member] | 90 Days or more Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	12,190	13,325
Commercial Real Estate [Member] | Owner-Occupied [Member] | Total Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	20,759	20,847
Commercial Real Estate [Member] | Owner-Occupied [Member] | Current & Other [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	1,677,151	1,712,329
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Total Financing Receivables	6,047,856	5,957,288
Loans, Recorded Investment >90 Days & Accruing	0	545
Commercial Real Estate [Member] | Nonowner-Occupied [Member] | 30-89 Days Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	7,984	5,791
Commercial Real Estate [Member] | Nonowner-Occupied [Member] | 90 Days or more Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	10,590	18,829
Commercial Real Estate [Member] | Nonowner-Occupied [Member] | Total Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	18,574	24,620
Commercial Real Estate [Member] | Nonowner-Occupied [Member] | Current & Other [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	6,029,282	5,932,668
Other Commercial [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Total Financing Receivables	3,533,910	3,462,361
Loans, Recorded Investment >90 Days & Accruing	6,326	6,569
Other Commercial [Member] | 30-89 Days Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	30,964	21,444
Other Commercial [Member] | 90 Days or more Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	14,722	15,883
Other Commercial [Member] | Total Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	45,686	37,327
Other Commercial [Member] | Current & Other [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	3,488,224	3,425,034
Residential Real Estate [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Total Financing Receivables	3,705,535	3,691,560
Loans, Recorded Investment >90 Days & Accruing	6,365	8,241
Residential Real Estate [Member] | 30-89 Days Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	21,196	19,488
Residential Real Estate [Member] | 90 Days or more Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	19,588	23,495
Residential Real Estate [Member] | Total Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	40,784	42,983
Residential Real Estate [Member] | Current & Other [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	3,664,751	3,648,577
Consumer [Member] | Bankcard [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Total Financing Receivables	8,398	8,913
Loans, Recorded Investment >90 Days & Accruing	79	187
Consumer [Member] | Bankcard [Member] | 30-89 Days Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	124	100
Consumer [Member] | Bankcard [Member] | 90 Days or more Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	79	187
Consumer [Member] | Bankcard [Member] | Total Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	203	287
Consumer [Member] | Bankcard [Member] | Current & Other [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	8,195	8,626
Consumer [Member] | Other Consumer [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Total Financing Receivables	1,239,545	1,183,844
Loans, Recorded Investment >90 Days & Accruing	1,605	2,445
Consumer [Member] | Other Consumer [Member] | 30-89 Days Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	17,979	17,264
Consumer [Member] | Other Consumer [Member] | 90 Days or more Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	2,251	2,615
Consumer [Member] | Other Consumer [Member] | Total Past Due [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	20,230	19,879
Consumer [Member] | Other Consumer [Member] | Current & Other [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans, Past Due	$ 1,219,315	$ 1,163,965

Credit Quality - Schedule of No

Credit Quality - Schedule of Nonaccrual Loans, Segregated by Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans on Nonaccrual Status	$ 47,661	$ 58,449
With No Related Allowance for Credit Losses	42,030	56,440
90 Days or More Past Due & Accruing	15,179	18,981
Other Commercial [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans on Nonaccrual Status	8,396	9,314
With No Related Allowance for Credit Losses	7,333	8,261
90 Days or More Past Due & Accruing	6,326	6,569
Residential Real Estate [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans on Nonaccrual Status	13,223	15,254
With No Related Allowance for Credit Losses	11,793	14,298
90 Days or More Past Due & Accruing	6,365	8,241
Owner-Occupied [Member] | Commercial Real Estate [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans on Nonaccrual Status	11,919	12,714
With No Related Allowance for Credit Losses	11,919	12,714
90 Days or More Past Due & Accruing	271	611
Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans on Nonaccrual Status	10,590	18,284
With No Related Allowance for Credit Losses	7,452	18,284
90 Days or More Past Due & Accruing	0	545
Construction & Land Development [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans on Nonaccrual Status	2,887	2,713
With No Related Allowance for Credit Losses	2,887	2,713
90 Days or More Past Due & Accruing	533	383
Bankcard [Member] | Consumer [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans on Nonaccrual Status	0	0
With No Related Allowance for Credit Losses	0	0
90 Days or More Past Due & Accruing	79	187
Other Consumer [Member] | Consumer [Member]
Disclosure Details Of Troubled Debt Restructuring Loan Modification Based On Post Modification Outstanding Balance [Line Items]
Loans on Nonaccrual Status	646	170
With No Related Allowance for Credit Losses	646	170
90 Days or More Past Due & Accruing	$ 1,605	$ 2,445

Credit Quality - Schedule of Am

Credit Quality - Schedule of Amortized Cost Loans and Leases Pledged As Collateral (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2020
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	$ 118,744	$ 130,460
Commercial Real Estate [Member] | Owner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	19,714	21,036
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	61,906	68,752
Other Commercial [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	15,053	18,050
Residential Real Estate [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	16,386	16,749
Construction & Land Development [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	5,685	5,873
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	25,548	25,927
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	0	0
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	7,069	7,085
Residential Real Estate [Member] | Other Commercial [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	2,093	2,093
Residential Real Estate [Member] | Residential Real Estate [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	16,386	16,749
Residential Real Estate [Member] | Construction & Land Development [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
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	11,890	15,263
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	30	38
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	11,860	15,225
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	3,288	5,473
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	703
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	3,288	4,770
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	17,480	18,440
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	9,490	9,775
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	7,990	8,665
Commercial Real Estate [Member] | Other Commercial [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
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	60,538	65,357
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	10,194	11,223
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	46,847	52,299
Other Assets [Member] | Other Commercial [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	1,100	732
Other Assets [Member] | Residential Real Estate [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	0	0
Other Assets [Member] | Construction & Land Development [Member]
Amortized Cost Collateral Dependent Loans [Line Items]
Amortized Cost Loans and Leases Pledged As Collateral	2,397	1,103
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 Ri

Credit Quality - Schedule of Risk Category of Loans by Class of Loans and Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
Total	$ 11,279,676	$ 11,152,825
Owner-Occupied [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	53,351	319,007
2021	343,436	310,948
2020	294,923	161,164
2019	150,444	141,532
2018	134,269	170,890
Prior	683,458	588,075
Revolving loans amortized cost basis	37,396	40,915
Revolving loans converted to term loans	633	645
Total	1,697,910	1,733,176
Owner-Occupied [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	53,351	319,007
2021	343,436	310,893
2020	294,872	161,075
2019	150,285	135,472
2018	130,636	168,874
Prior	638,377	539,640
Revolving loans amortized cost basis	36,446	39,117
Revolving loans converted to term loans	389	401
Total	1,647,792	1,674,479
Owner-Occupied [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	51
2019	129	5,399
2018	2,976	712
Prior	20,651	20,672
Revolving loans amortized cost basis	950	959
Revolving loans converted to term loans	0	0
Total	24,706	27,793
Owner-Occupied [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	55
2020	51	38
2019	30	661
2018	657	1,304
Prior	24,132	27,458
Revolving loans amortized cost basis	0	839
Revolving loans converted to term loans	244	244
Total	25,114	30,599
Owner-Occupied [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	0
Prior	298	305
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	298	305
Owner-Occupied [Member] | YTS Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	(44)
Prior	(31)	(370)
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	(31)	(414)
Owner-Occupied [Member] | YTS Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	13
Prior	6	856
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	6	869
Owner-Occupied [Member] | YTS Net Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0
2021	0	0
2020	0	0
2019	0	0
2018	0	(31)
Prior	(25)	486
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	(25)	455
Nonowner-Occupied [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	363,877	1,559,293
2021	1,636,772	929,175
2020	869,222	834,267
2019	758,979	494,897
2018	474,081	398,470
Prior	1,832,869	1,633,793
Revolving loans amortized cost basis	111,896	105,354
Revolving loans converted to term loans	160	2,039
Total	6,047,856	5,957,288
Nonowner-Occupied [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	363,243	1,558,474
2021	1,636,772	925,508
2020	865,579	707,570
2019	641,763	460,660
2018	439,994	397,003
Prior	1,704,382	1,490,548
Revolving loans amortized cost basis	111,896	102,561
Revolving loans converted to term loans	160	2,039
Total	5,763,789	5,644,363
Nonowner-Occupied [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	634	819
2021	0	2,953
2020	2,934	113,655
2019	83,137	5,826
2018	5,762	372
Prior	32,705	40,534
Revolving loans amortized cost basis	0	2,793
Revolving loans converted to term loans	0	0
Total	125,172	166,952
Nonowner-Occupied [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	714
2020	709	13,042
2019	34,079	28,411
2018	28,325	1,095
Prior	95,782	102,711
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	158,895	145,973
Nonowner-Occupied [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	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] | YTS Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	0
Prior	0	(3,531)
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	0	(3,531)
Nonowner-Occupied [Member] | YTS Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	0
Prior	75	1,907
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	75	1,097
Nonowner-Occupied [Member] | YTS Net Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	0
Prior	75	(1,624)
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	75	(1,624)
Other Commercial Loans [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	387,364	927,399
2021	837,804	557,433
2020	483,708	340,120
2019	282,887	115,368
2018	105,499	91,037
Prior	302,779	98,491
Revolving loans amortized cost basis	1,131,714	1,330,209
Revolving loans converted to term loans	2,155	2,304
Total	3,533,910	3,462,361
Other Commercial Loans [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	372,103	924,726
2021	833,601	557,422
2020	483,501	306,945
2019	280,431	107,426
2018	98,020	87,090
Prior	253,471	76,032
Revolving loans amortized cost basis	1,013,277	1,211,865
Revolving loans converted to term loans	1,935	2,038
Total	3,336,339	3,273,544
Other Commercial Loans [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	15,000	1,880
2021	3,428	0
2020	0	31,614
2019	1,056	3,012
2018	2,908	1,801
Prior	30,114	3,390
Revolving loans amortized cost basis	76,935	76,987
Revolving loans converted to term loans	55	61
Total	129,496	118,745
Other Commercial Loans [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	261	793
2021	775	11
2020	207	1,561
2019	1,400	4,930
2018	4,571	2,146
Prior	19,194	18,963
Revolving loans amortized cost basis	41,502	41,357
Revolving loans converted to term loans	165	205
Total	68,075	69,966
Other Commercial Loans [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022		0
2021		0
2020	0	0
2019		0
2018		0
Prior	0	106
Revolving loans amortized cost basis		0
Revolving loans converted to term loans		0
Total	0	106
Other Commercial Loans [Member] | YTS Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	(5)	(87)
2020	0	(31)
2019	0	(200)
2018	(9)	(174)
Prior	(259)	(5,650)
Revolving loans amortized cost basis	0	(40)
Revolving loans converted to term loans	0	0
Total	(273)	(6,182)
Other Commercial Loans [Member] | YTS Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	3
2020	0	30
2019	2	86
2018	705	34
Prior	1,442	4,154
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	2,149	4,307
Other Commercial Loans [Member] | YTS Net Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	(5)	(84)
2020	0	(1)
2019	2	(114)
2018	696	(140)
Prior	1,183	(1,496)
Revolving loans amortized cost basis	0	(40)
Revolving loans converted to term loans	0	0
Total	1,876	(1,875)
Residential Real Estate [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	117,042	816,157
2021	880,320	568,323
2020	528,457	383,694
2019	351,123	316,051
2018	285,922	180,955
Prior	1,095,334	963,754
Revolving loans amortized cost basis	444,405	459,541
Revolving loans converted to term loans	2,932	3,085
Total	3,705,535	3,691,560
Residential Real Estate [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	117,042	815,693
2021	877,631	568,323
2020	528,389	383,250
2019	350,569	315,211
2018	284,900	178,101
Prior	1,070,761	931,730
Revolving loans amortized cost basis	440,663	455,705
Revolving loans converted to term loans	2,932	2,972
Total	3,672,887	3,650,985
Residential Real Estate [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	223
2018	220	91
Prior	5,246	12,251
Revolving loans amortized cost basis	2,206	2,339
Revolving loans converted to term loans	0	0
Total	7,672	14,904
Residential Real Estate [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	464
2021	2,689	0
2020	68	444
2019	554	617
2018	802	2,763
Prior	19,327	19,773
Revolving loans amortized cost basis	1,536	1,497
Revolving loans converted to term loans	0	113
Total	24,976	25,671
Residential Real Estate [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	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] | YTS Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	(37)
2019	0	(38)
2018	(224)	(167)
Prior	(270)	(5,774)
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	(494)	(6,016)
Residential Real Estate [Member] | YTS Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	2	3
Prior	878	2,384
Revolving loans amortized cost basis	0	13
Revolving loans converted to term loans	0	0
Total	880	2,400
Residential Real Estate [Member] | YTS Net Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	(37)
2019	0	(38)
2018	(222)	(164)
Prior	608	(3,390)
Revolving loans amortized cost basis	0	13
Revolving loans converted to term loans	0	0
Total	386	(3,616)
Construction & Land Development [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	78,543	767,683
2021	866,431	518,360
2020	516,417	281,561
2019	265,046	152,987
2018	151,898	18,371
Prior	98,085	81,041
Revolving loans amortized cost basis	209,706	194,162
Revolving loans converted to term loans	0	0
Total	2,186,126	2,014,165
Construction & Land Development [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	78,543	767,351
2021	866,127	518,291
2020	516,349	278,020
2019	261,445	152,062
2018	150,981	18,371
Prior	91,506	74,532
Revolving loans amortized cost basis	208,309	192,421
Revolving loans converted to term loans	0	0
Total	2,173,260	2,001,048
Construction & Land Development [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	69
2020	68	3,261
2019	3,260	0
2018	0	0
Prior	1,225	1,237
Revolving loans amortized cost basis	991	995
Revolving loans converted to term loans	0	0
Total	5,544	5,562
Construction & Land Development [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	332
2021	304	0
2020	0	280
2019	341	925
2018	917	0
Prior	5,354	5,272
Revolving loans amortized cost basis	406	746
Revolving loans converted to term loans	0	0
Total	7,322	7,555
Construction & Land Development [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	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] | YTS Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	(177)
Prior	(2)	(383)
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	(2)	(560)
Construction & Land Development [Member] | YTS Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	133
Prior	184	471
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	184	604
Construction & Land Development [Member] | YTS Net Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	(44)
Prior	182	88
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	182	44
Bankcard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	0
Prior	0	0
Revolving loans amortized cost basis	8,398	8,913
Revolving loans converted to term loans	0	0
Total	8,398	8,913
Bankcard [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	0
Prior	0	0
Revolving loans amortized cost basis	8,194	8,626
Revolving loans converted to term loans	0	0
Total	8,194	8,626
Bankcard [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	0
Prior	0	0
Revolving loans amortized cost basis	124	100
Revolving loans converted to term loans	0	0
Total	124	100
Bankcard [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	0
Prior	0	0
Revolving loans amortized cost basis	80	187
Revolving loans converted to term loans	0	0
Total	80	187
Bankcard [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term loans	0	0
Total	0	0
Bankcard [Member] | YTS Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0
2021	0
2020	0
2019	0
2018	0
Prior	0
Revolving loans amortized cost basis	(143)	(190)
Revolving loans converted to term loans	0
Total	(143)	(190)
Bankcard [Member] | YTS Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0
2021	0
2020	0
2019	0
2018	0
Prior	0
Revolving loans amortized cost basis	1	42
Revolving loans converted to term loans	0
Total	1	42
Bankcard [Member] | YTS Net Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0
2021	0
2020	0
2019	0
2018	0
Prior	0
Revolving loans amortized cost basis	(142)	(148)
Revolving loans converted to term loans	0
Total	(142)	(148)
Other Consumer [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	197,844	479,933
2021	458,116	299,583
2020	264,408	237,744
2019	204,700	121,925
2018	102,665	30,288
Prior	8,521	10,888
Revolving loans amortized cost basis	3,291	3,483
Revolving loans converted to term loans		0
Total	1,239,545	1,183,844
Other Consumer [Member] | Pass [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	197,844	479,933
2021	458,116	299,582
2020	264,408	237,742
2019	204,698	121,924
2018	102,665	30,288
Prior	8,512	10,878
Revolving loans amortized cost basis	3,284	3,475
Revolving loans converted to term loans		0
Total	1,239,527	1,183,822
Other Consumer [Member] | Special Mention [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022		0
2021	0	0
2020	0	2
2019	2	1
2018		0
Prior	9	10
Revolving loans amortized cost basis	7	8
Revolving loans converted to term loans		0
Total	18	21
Other Consumer [Member] | Substandard [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022		0
2021	0	1
2020	0	0
2019		0
2018		0
Prior		0
Revolving loans amortized cost basis		0
Revolving loans converted to term loans		0
Total	0	1
Other Consumer [Member] | Doubtful [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022		0
2021	0	0
2020	0	0
2019		0
2018		0
Prior		0
Revolving loans amortized cost basis		0
Revolving loans converted to term loans		0
Total	0	0
Other Consumer [Member] | YTS Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	(101)
2021	(135)	(776)
2020	(181)	(709)
2019	(117)	(483)
2018	(47)	(126)
Prior	(52)	(203)
Revolving loans amortized cost basis	(1)	(6)
Revolving loans converted to term loans	0	0
Total	(533)	(2,404)
Other Consumer [Member] | YTS Recoveries [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	5
2021	1	86
2020	19	51
2019	46	101
2018	26	18
Prior	69	186
Revolving loans amortized cost basis	0	2
Revolving loans converted to term loans	0	0
Total	161	449
Other Consumer [Member] | YTS Net Charge Offs [Member]
Disclosure Details Of Loans And Leases By Risk Category [Line Items]
2022	0	(96)
2021	(134)	(690)
2020	(162)	(658)
2019	(71)	(382)
2018	(21)	(108)
Prior	17	(17)
Revolving loans amortized cost basis	(1)	(4)
Revolving loans converted to term loans	0	0
Total	$ (372)	$ (1,955)

Allowance for Credit Losses - A

Allowance for Credit Losses - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Losses [Line Items]
Reserve for lending-related commitments	$ 36,679	$ 31,442
Maximum Period Related To Accrual Of Interest On Discontinued Loans	90 days
Allowance for credit loss on accrued interest receivable	$ 0	8
Accrued interest receivable net of allowance for credit loss	$ 66,528	$ 64,512
Percentage of projection for real GDP	2.80%	4.00%
Accrued Income Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit loss on accrued interest receivable	$ 0	$ 8
Accrued interest receivable net of allowance for credit loss	$ 48,764	$ 49,029

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	Mar. 31, 2022	Dec. 31, 2021
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	$ 48,764	$ 49,037
Less: Allowance for credit losses	0	(8)
Total	48,764	49,029
Other Commercial [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	8,544	9,335
Residential Real Estate [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	9,205	10,347
Owner-Occupied [Member] | Commercial Real Estate [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	3,742	4,172
Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	17,305	14,901
Construction [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivable	7,337	7,411
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	$ 2,631	$ 2,871

Allowance for Credit Losses -_2

Allowance for Credit Losses - Schedule of Accrued Interest Receivables Written off by Reversing Interest (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivables Written Off by Reversing Interest Income	$ 88	$ 135
Construction [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivables Written Off by Reversing Interest Income	0	0
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	0	1
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	0	36
Other Commercial [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivables Written Off by Reversing Interest Income	1	6
Residential Real Estate [Member]
Accrued Interest Receivables And Written Off Status [Line Items]
Accrued Interest Receivables Written Off by Reversing Interest Income	20	28
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	$ 67	$ 64

Allowance for Credit Losses -_3

Allowance for Credit Losses - Schedule of Allowance for Loan Losses and Carrying Amount of Loans (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	$ 216,016	$ 235,830
Initial allowance for PCD loans (acquired during the period)		12,629
Charge-offs	(1,476)	(19,297)
Recoveries	3,456	10,578
Provision	(3,402)	(23,724)
Allowance for Loan and Lease Losses Ending balance	214,594	216,016
Construction & Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	39,395	39,077
Initial allowance for PCD loans (acquired during the period)		823
Charge-offs	(2)	(560)
Recoveries	184	604
Provision	2,002	(549)
Allowance for Loan and Lease Losses Ending balance	41,579	39,395
Allowance for Estimated Imprecision [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	0	0
Initial allowance for PCD loans (acquired during the period)		0
Charge-offs	0	0
Recoveries	0	0
Provision	0	0
Allowance for Loan and Lease Losses Ending balance	0	0
Bank Card [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	317	322
Initial allowance for PCD loans (acquired during the period)		0
Charge-offs	(143)	(190)
Recoveries	1	42
Provision	146	143
Allowance for Loan and Lease Losses Ending balance	321	317
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	14,443	23,354
Initial allowance for PCD loans (acquired during the period)		1,241
Charge-offs	(31)	(414)
Recoveries	6	869
Provision	(1,059)	(10,607)
Allowance for Loan and Lease Losses Ending balance	13,359	14,443
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	42,156	49,150
Initial allowance for PCD loans (acquired during the period)		4,363
Charge-offs	0	(3,531)
Recoveries	75	1,907
Provision	(5,566)	(9,733)
Allowance for Loan and Lease Losses Ending balance	36,665	42,156
Other Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	78,432	78,138
Initial allowance for PCD loans (acquired during the period)		5,009
Charge-offs	(273)	(6,182)
Recoveries	2,149	4,307
Provision	179	(2,840)
Allowance for Loan and Lease Losses Ending balance	80,487	78,432
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	26,404	29,125
Initial allowance for PCD loans (acquired during the period)		1,192
Charge-offs	(494)	(6,016)
Recoveries	880	2,400
Provision	319	(297)
Allowance for Loan and Lease Losses Ending balance	27,109	26,404
Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses Beginning balance	14,869	16,664
Initial allowance for PCD loans (acquired during the period)		1
Charge-offs	(533)	(2,404)
Recoveries	161	449
Provision	577	159
Allowance for Loan and Lease Losses Ending balance	$ 15,074	$ 14,869

Intangible Assets - Summary of

Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Goodwill not subject to amortization	$ 1,889,244	$ 1,886,494
Core Deposit Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	105,165	105,165
Accumulated Amortization	(83,407)	(82,028)
George Mason Trade Name Intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,080	1,080
Crescent Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	196	196
Community Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	0	0
Goodwill not subject to amortization	1,883,929	1,881,179
Community Banking [Member] | Core Deposit Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	105,165	105,165
Accumulated Amortization	(83,407)	(82,028)
Community Banking [Member] | George Mason Trade Name Intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	0	0
Community Banking [Member] | Crescent Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	0	0
Mortgage Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,276	1,276
Goodwill not subject to amortization	5,315	5,315
Mortgage Banking [Member] | Core Deposit Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	0	0
Accumulated Amortization	0	0
Mortgage Banking [Member] | George Mason Trade Name Intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,080	1,080
Mortgage Banking [Member] | Crescent Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	196	196
Total Gross Carrying Amount [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,276	$ 1,276

Intangible Assets - Reconciliat

Intangible Assets - Reconciliation of Goodwill (Detail) - USD ($) $ in Thousands	Dec. 03, 2021	Mar. 31, 2022
Goodwill [Line Items]
Goodwill at December 31, 2021		$ 1,886,494
Goodwill at March 31, 2022		1,889,244
Community Bankers Trust Corporation [Member]
Goodwill [Line Items]
Addition to goodwill from Community Bankers Trust acquisition	$ 79,204	2,750
Goodwill at March 31, 2022	$ 79,204
Community Banking [Member]
Goodwill [Line Items]
Goodwill at December 31, 2021		1,881,179
Goodwill at March 31, 2022		1,883,929
Community Banking [Member] | Community Bankers Trust Corporation [Member]
Goodwill [Line Items]
Addition to goodwill from Community Bankers Trust acquisition		2,750
Mortgage Banking [Member]
Goodwill [Line Items]
Goodwill at December 31, 2021		5,315
Goodwill at March 31, 2022		5,315
Mortgage Banking [Member] | Community Bankers Trust Corporation [Member]
Goodwill [Line Items]
Addition to goodwill from Community Bankers Trust acquisition		$ 0

Intangible Assets - Schedule of

Intangible Assets - Schedule of Anticipated Amortization Expense (Detail) $ in Thousands	Mar. 31, 2022USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2022	$ 5,516
2023	5,116
2024	3,639
2025	3,282
2026	2,758
2027 and thereafter	$ 2,826

Mortgage Servicing Rights - Add

Mortgage Servicing Rights - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Servicing Assets at Fair Value [Line Items]
Estimated fair value of mortgage servicing rights	$ 23,089	$ 23,144
Mortgage Servicing Rights [Member]
Servicing Assets at Fair Value [Line Items]
Loans serviced for others unpaid principal balance	$ 3,623,207	$ 3,698,998
Net servicing fee percentage	0.26%	0.26%
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%	10.50%
Weighted average prepayment rates used in estimating the fair value of servicing rights	10.61%	10.60%
Deliquency rate used in determning fair value of servicing rights	8.02%	12.59%
Mortgage Servicing Rights [Member] | Maximum [Member]
Servicing Assets at Fair Value [Line Items]
Discount rate used in estimating the fair value of servicing rights	10.98%	11.71%
Weighted average prepayment rates used in estimating the fair value of servicing rights	9.79%	16.56%
Deliquency rate used in determning fair value of servicing rights	13.24%	21.20%
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	2.65%	2.09%
Mortgage Servicing Rights [Member] | Loan Origination Commitments [Member] | Median [Member]
Servicing Assets at Fair Value [Line Items]
Estimated fair value of mortgage servicing rights	$ 37,740	$ 27,355

Mortgage Servicing Rights - Sum

Mortgage Servicing Rights - Summary of Activity in Mortgage Servicing Rights (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Servicing Asset at Amortized Cost [Line Items]
MSRs valuation allowance beginning balance	$ (883)	$ (1,383)	$ (1,383)
Aggregate additions charged and recoveries credited to operations	883	0
MSRs impairment	0	0
MSRs valuation allowance ending balance	0	(1,383)	(883)
MSRs, net of valuation allowance	23,089	22,018
Mortgage Servicing Rights [Member]
Servicing Asset at Amortized Cost [Line Items]
MSRs beginning balance	24,027	22,338	22,338
Amount capitalized	687	3,224
Amount amortized	(1,625)	(2,161)
MSRs ending balance	23,089	$ 23,401	24,027
MSRs impairment	$ (883)		$ 629

Leases - Additional Information

Leases - Additional Information (Detail)	Mar. 31, 2022
Operating leases, option to extend term	5 years
Maximum [Member]
Operating lease remaining lease term	16 years
Minimum [Member]
Operating lease remaining lease term	1 year

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating lease cost	$ 5,129	$ 5,349
Sublease income	(168)	(297)
Net lease cost	$ 4,961	$ 5,052

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Operating lease right-of-use assets	$ 77,097	$ 81,942
Operating lease liabilities	$ 81,678	$ 86,703

Leases - Other Information Rela

Leases - Other Information Related to Leases (Detail)	Mar. 31, 2022
Weighted-average remaining lease term:
Operating leases	6 years 9 months 29 days
Weighted-average discount rate:
Operating leases	2.12%

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash paid for amounts in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 5,310	$ 5,446
ROU assets obtained in the exchange for lease liabilties	$ 1,601	$ 4,443

Leases - Maturities of Lease Li

Leases - Maturities of Lease Liabilities by Year (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
2022	$ 14,371
2023	17,243
2024	12,382
2025	9,256
2026	7,947
Thereafter	26,324
Total lease payments	87,523
Less: imputed interest	(5,845)
Total	$ 81,678	$ 86,703

Short-Term Borrowings - Short-T

Short-Term Borrowings - Short-Term Borrowings and the Related Weighted-Average Interest Rates (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Short-term Debt [Line Items]
Short-term borrowings	$ 136,370	$ 128,844
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	$ 136,370	$ 128,844

Short-Term Borrowings - Additio

Short-Term Borrowings - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Short-term Debt [Line Items]
Unused lines of credit	$ 230,000
Unrelated Financial Institution [Member]
Short-term Debt [Line Items]
Unused lines of credit	$ 20,000
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 ($)	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Unused borrowing amount	$ 7,668,153
Outstanding balances of debentures	$ 275,743,000	$ 275,323,000
Maximum time to defer payment of interest on subordinate debt	5 years
Advances from Federal Home Loan Banks	$ 531,615,000	532,199,000
Federal Home Loan Bank, Advances, Activity for Year, Average Interest Rate for Year	0.48%
Debt, Weighted Average Interest Rate	0.55%
Community Bankers Trust [Member]
Debt Instrument [Line Items]
Outstanding balances of debentures	$ 9,877,000	$ 9,872,000
Fixed To Floating Rate Subordinated Notes [Member] | Carolina Financial [Member]
Debt Instrument [Line Items]
Business combination subordinated notes assumed Face Value	$ 10,000,000

Long -Term Borrowings - Schedul

Long -Term Borrowings - Schedule of Maturities of Long-term Borrowings (Detail) $ in Thousands	Mar. 31, 2022USD ($)
Debt Disclosure [Abstract]
2022	$ 520,625
2023	0
2024	0
2025	10,990
2026 and thereafter	0
Total	$ 531,615

Commitments and Contingent Li_2

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Loss Contingencies [Line Items]
Loan commitments outstanding	$ 7,117,518	$ 6,847,550
Loan commitments expiry period	1 year
George Mason [Member]
Loss Contingencies [Line Items]
Reserve for possible losses due to the repurchase of loans previously sold to investors	$ 1,150	1,150
Commitments to Extend Credit [Member] | George Mason [Member] | Short-term Contract with Customer [Member]
Loss Contingencies [Line Items]
Additional commitments to extend credit	714,634	571,792
Commercial Letters of Credit [Member]
Loss Contingencies [Line Items]
Letters of credit issued	17,408	14,774
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Letters of credit issued	$ 155,933	$ 164,743

Derivative Financial Instrume_3

Derivative Financial Instruments - Schedule of Notional Amount and Fair Value Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Asset derivatives, notional amount	$ 1,407,561	$ 1,134,568
Asset derivatives designated as hedging instruments	61,551	32,265
Liability derivatives, notional amount	465,709	662,195
Liability derivatives not designated as hedging instruments	5,606	3,728
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	544,167	500,000
Liability derivatives, notional amount	14,144	72,447
Asset derivatives not designated as hedging instruments	44,500	21,328
Liability derivatives designated as hedging instruments	84	3,197
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	863,394	634,568
Asset derivatives designated as hedging instruments	17,051	10,937
Liability derivatives, notional amount	451,565	589,748
Liability derivatives not designated as hedging instruments	5,522	531
Fair Value Hedging [Member]
Derivative [Line Items]
Liability derivatives, notional amount	14,144	72,447
Liability derivatives designated as hedging instruments	84	3,197
Fair Value Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	44,167	0
Asset derivatives designated as hedging instruments	136	0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	500,000	500,000
Asset derivatives designated as hedging instruments	44,364	21,328
Other Assets [Member] | Not Designated as Hedging Instrument [Member] | TBA Mortgage Backed Securities [Member]
Derivative [Line Items]
Asset derivatives, notional amount	546,450	133,747
Asset derivatives not designated as hedging instruments	11,067	127
Other Assets [Member] | Fair Value Hedging [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Asset derivatives, notional amount	316,944	467,472
Asset derivatives designated as hedging instruments	5,984	10,380
Other Liabilities [Member] | Not Designated as Hedging Instrument [Member] | TBA Mortgage Backed Securities [Member]
Derivative [Line Items]
Liability derivatives, notional amount	0	550,000
Liability derivatives not designated as hedging instruments	0	470
Other Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Liability derivatives, notional amount	412,808	24,743
Liability derivatives not designated as hedging instruments	4,867	25
Interest Rate Swap Contracts [Member] | Other Assets [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	44,167	0
Asset derivatives designated as hedging instruments	136	0
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	500,000	500,000
Asset derivatives designated as hedging instruments	44,364	21,328
Interest Rate Swap Contracts [Member] | Other Liabilities [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Hedged Commercial Loans [Member]
Derivative [Line Items]
Liability derivatives, notional amount	14,144	72,447
Liability derivatives designated as hedging instruments	84	3,197
Forward Loan Sale Commitments [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	0	33,349
Asset derivatives not designated as hedging instruments	0	430
Forward Loan Sale Commitments [Member] | Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives, notional amount	38,757	15,005
Liability derivatives not designated as hedging instruments	$ 655	$ 36

Derivative Financial Instrume_4

Derivative Financial Instruments - Additional information (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Mar. 31, 2022	Jun. 30, 2020	Dec. 31, 2021
Derivative [Line Items]
Derivative liabilities notional amount	$ 465,709,000		$ 662,195,000
Derivative Asset, Notional Amount	1,407,561,000		$ 1,134,568,000
Interest Rate Cash Flow Hedge [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	500,000
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	$ 250,000,000	$ 250,000,000
Derivative instrument pay fixed rate of interest and receive floating rate	0.19%	0.59%
Derivative instrument term of the interest rate swap	4 years	10 years
Cash flow hedge reclassification amount to be reclassified from aoci to income in the next twelve months	$ 6,425,000

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 Net Of Unearned Income [Member] - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Carrying Amount of the Hedged Assets/(Liabilities)	$ 59,047	$ 73,232
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)	53	(3,197)
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	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Derivative [Line Items]
Derivatives in hedging relationships	$ 5,714	$ 13,724
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivatives in hedging relationships	(943)	(458)
Designated as Hedging Instrument [Member] | Interest And Fees On Loans [Member] | Interest Rate Contracts [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Derivatives in hedging relationships	(601)	(235)
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	(342)	(223)
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivatives not designated as hedging instruments	6,657	14,182
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	11,410	24,163
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	(3,704)	(6,991)
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	$ (1,049)	$ (2,990)

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Amortization Expense On Intangible Assets	$ 1,379	$ 1,466

Stock Based Compensation - Addi

Stock Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	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
Recognition of compensation expense	$ 2,061	$ 1,688
Number of share available for grant for prior plans	0
Maximum term for awards granted (years)	10 years
Shares issued related stock option exercises	258,574,000
Total intrinsic value of options exercised	$ 3,856		$ 1,408
Stock option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued related stock option exercises	258,574	145,621

Stock Based Compensation - Summ

Stock Based Compensation - Summary of Stock Option Plans (Detail) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)$ / sharesshares
Disclosure Stock Based Compensation Stock Option Plan [Abstract]
Shares, Outstanding, Beginning balance | shares	2,149,117,000
Shares, Exercised | shares	(258,574,000)
Shares, Forfeited or expired | shares	(82,088,000)
Shares, Outstanding, Ending balance | shares	1,808,455,000
Shares, Exercisable at December 31, 2020 | shares	1,637,092,000
Aggregate Intrinsic Value, Outstanding at December 31, 2020 | $	$ 6,720
Aggregate Intrinsic Value, Exercisable at December 31, 2020 | $	$ 6,449
Weighted Average Remaining Contractual Term, Outstanding at December 31, 2020	5 years
Weighted Average Remaining Contractual Term, Exercisable at December 31, 2020	4 years 8 months 12 days
Weighted Average Exercise Price, Outstanding, Beginning balance | $ / shares	$ 32.01
Weighted Average Exercise Price, Exercised | $ / shares	22.37
Weighted Average Exercise Price, Forfeited or expired | $ / shares	29.51
Weighted Average Exercise Price, Outstanding, Ending balance | $ / shares	33.50
Weighted Average Exercise Price, Exercisable | $ / shares	$ 33.40

Stock Based Compensation - Stat

Stock Based Compensation - Status of United's Nonvested Stock Option Awards (Detail)	3 Months Ended
	Mar. 31, 2022$ / sharesshares
Shares, Nonvested, Beginning balance | shares	395,034
Shares, Vested | shares	(215,926)
Shares, Forfeited or expired | shares	(7,745)
Shares, Nonvested, Ending balance | shares	171,363
Weighted-Average Grant Date Fair Value Per Share, Nonvested Beginning balance | $ / shares	$ 7.33
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	8.11
Weighted-Average Grant Date Fair Value Per Share, Forfeited or expired | $ / shares	11.35
Weighted-Average Grant Date Fair Value Per Share, Nonvested Ending balance | $ / shares	$ 6.16
Restricted Stock Units (RSUs) [Member]
Shares, Nonvested, Beginning balance | shares	136,896
Shares, Granted | shares	147,511
Shares, Vested | shares	(18,248)
Shares, Nonvested, Ending balance | shares	266,159
Weighted-Average Grant Date Fair Value Per Share, Nonvested Beginning balance | $ / shares	$ 35.65
Weighted-Average Grant Date Fair Value Per Share, Granted | $ / shares	35.46
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	37.05
Weighted-Average Grant Date Fair Value Per Share, Nonvested Ending balance | $ / shares	$ 35.45

Stock Based Compensation - Chan

Stock Based Compensation - Changes to United's Restricted Common Shares (Detail) - Restricted Stock [Member]	3 Months Ended
	Mar. 31, 2022$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning balance | shares	383,971
Shares, Granted | shares	154,568
Shares, Vested | shares	(149,811)
Shares, Forfeited | shares	(6,212)
Number of Shares, Outstanding, Ending balance | shares	382,516
Weighted-Average Grant Date Fair Value Per Share, Outstanding, Beginning balance | $ / shares	$ 35.21
Weighted-Average Grant Date Fair Value Per Share, Granted | $ / shares	36.26
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	35.79
Weighted-Average Grant Date Fair Value Per Share, Forfeited | $ / shares	35.85
Weighted-Average Grant Date Fair Value Per Share, Outstanding, Ending balance | $ / shares	$ 35.40

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Unrecognized actuarial gains (losses), before tax		$ 44,370
Amortization expected to be recognized, net of tax	$ 34,032
Employer discretionary contribution amount	$ 0

Employee Benefit Plans - Net Pe

Employee Benefit Plans - Net Periodic Pension Cost (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 703	$ 750
Interest cost	1,208	1,020
Expected return on plan assets	(3,193)	(2,924)
Recognized net actuarial loss	824	1,572
Net periodic pension cost	$ (458)	$ 418
Weighted-Average Assumptions:
Discount rate	3.08%	2.81%
Expected return on assets	6.25%	6.25%
Prior to Age 40 [Member]
Weighted-Average Assumptions:
Rate of Compensation Increase	5.00%	5.00%
Ages 40-54 [Member]
Weighted-Average Assumptions:
Rate of Compensation Increase	4.00%	4.00%
Otherwise [Member]
Weighted-Average Assumptions:
Rate of Compensation Increase	3.50%	3.50%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Taxes [Line Items]
Accrued interest related to uncertain tax positions	$ 753	$ 695
Effective tax rate	19.75%	20.50%

Comprehensive Income - Componen

Comprehensive Income - Components of Total Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net Income	$ 81,664	$ 106,898
AFS securities - all other:
Related income tax effect	47,121	10,710
Change in net unrealized gains (losses) on AFS securities arising during the period	(202,234)	(45,967)
Net reclassification adjustment for gains included in net income	0	(1,444)
Related income tax effect	0	336
Net effect of HTM securities on other comprehensive income	(155,113)	(36,365)
Net effect of AFS securities on other comprehensive income	(155,113)	(36,365)
Cash flow hedge derivatives:
Unrealized gain on cash flow hedge before reclassification to interest expense	22,694	19,317
Related income tax effect	(5,288)	(4,501)
Net reclassification adjustment for losses included in net income	342	223
Related income tax effect	(80)	(52)
Net effect of cash flow hedge derivatives on other comprehensive income	17,668	14,987
Pension plan:
Recognized net actuarial loss	824	1,572
Related income tax benefit	(183)	(703)
Net effect of change in defined benefit pension plan on other comprehensive income	641	869
Net current-period other comprehensive income, net of tax	(136,804)	(20,509)
Total Comprehensive Income	$ (55,140)	$ 86,389

Comprehensive Income - Compon_2

Comprehensive Income - Components of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 4,718,628	$ 4,297,620
Net current-period other comprehensive income, net of tax	(136,804)	(20,509)
Ending Balance	4,595,140	4,332,698
Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(29,841)
Other comprehensive income before reclassification	0
Amounts reclassified from accumulated other comprehensive income	641
Net current-period other comprehensive income, net of tax	641
Ending Balance	(29,200)
Unrealized Gains/Losses on AFS Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	8,594
Other comprehensive income before reclassification	(155,113)
Amounts reclassified from accumulated other comprehensive income	0
Net current-period other comprehensive income, net of tax	(155,113)
Ending Balance	(146,519)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(4,888)	22,370
Other comprehensive income before reclassification	(137,707)
Amounts reclassified from accumulated other comprehensive income	903
Net current-period other comprehensive income, net of tax	(136,804)	(20,509)
Ending Balance	(141,692)	$ 1,861
Unrealized Gains/Losses on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	16,359
Other comprehensive income before reclassification	17,406
Amounts reclassified from accumulated other comprehensive income	262
Net current-period other comprehensive income, net of tax	17,668
Ending Balance	$ 34,027

Comprehensive Income - Reclassi

Comprehensive Income - Reclassifications Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Available for sale ("AFS") securities:
Income before income taxes	$ 101,762	$ 134,463
Related income tax effect	(20,098)	(27,565)
Net income	81,664	106,898
Cash flow hedge:
Income before income taxes	101,762	134,463
Related income tax effect	20,098	27,565
Net income	81,664	106,898
Pension plan:
Amortization of net actuarial loss	824	1,572
Income before income taxes	101,762	134,463
Related income tax effect	(20,098)	(27,565)
Net income	81,664	$ 106,898
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains/Losses on AFS Securities [Member]
Available for sale ("AFS") securities:
Net reclassification adjustment for gains included in net income	0
Income before income taxes	0
Related income tax effect	0
Net income	0
Cash flow hedge:
Income before income taxes	0
Related income tax effect	0
Net income	0
Pension plan:
Income before income taxes	0
Related income tax effect	0
Net income	0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Available for sale ("AFS") securities:
Income before income taxes	(183)
Related income tax effect	641
Net income	903
Cash flow hedge:
Income before income taxes	(183)
Related income tax effect	(641)
Net income	903
Pension plan:
Net actuarial loss	824
Amortization of net actuarial loss	824
Income before income taxes	(183)
Related income tax effect	641
Net income	903
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	342
Related income tax effect	80
Net income	262
Cash flow hedge:
Net reclassification adjustment for losses	342
Income before income taxes	342
Related income tax effect	(80)
Net income	262
Pension plan:
Income before income taxes	342
Related income tax effect	80
Net income	$ 262

Earnings Per Share - Reconcilia

Earnings Per Share - 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
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Distributed earnings allocated to common stock	$ 49,056	$ 45,068
Undistributed earnings allocated to common stock	32,392	61,531
Net earnings allocated to common shareholders	$ 81,448	$ 106,599
Average common shares outstanding	136,058,328	128,635,740
Common stock equivalents	376,901	255,121
Average diluted shares outstanding	136,435,229	128,890,861
Earnings per basic common share	$ 0.60	$ 0.83
Earnings per diluted common share	$ 0.60	$ 0.83

Earnings Per Share -Additional

Earnings Per Share -Additional Information (Detail) - shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Antidilutive stock options and restricted stock outstanding shares	1,143,182
Employee Stock Option And Restricted Stock Units [Member]
Antidilutive securities excluded from computation of earnings per share amount		1,373,241

Fair Values of Measurements - A

Fair Values of Measurements - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Transfers from Level 1 to Level 3 for financial liabilities	$ 0
Transfers from Level 3 to Level 1 for financial liabilities	0
Transfers from Level 2 to Level 3 for financial liabilities	0
Transfers from Level 3 to Level 2 for financial liabilities	0
Nonrecurring fair value adjustments on loans held for sale	0
Fair value measurement of intangible assets	0	$ 0
Valuation Allowance for Impairment of Recognized Servicing Assets, Period Increase (Decrease)	0	$ 0
Fair Value Liabilities Level One To Level Two Transfers Amount	$ 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	0.07%
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	0.65%
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	0.13%
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	0.07%
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	0.65%
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	0.13%

Fair Values of Measurements - S

Fair Values of Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value (Detail) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	$ 12,357,000	$ 12,404,000
Loans held for sale	340,040,000	504,416,000
Derivative financial liabilities	0	0
Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	4,760,934,000	4,042,699,000
Available for sale equity securities	12,357,000	12,404,000
Loans held for sale	340,040,000	504,416,000
Derivative financial assets	61,551,000	32,265,000
Derivative financial liabilities	5,606,000	3,728,000
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	371,392,000	81,850,000
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	795,512,000	847,298,000
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	1,389,535	1,113,774,000
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	100,097,000	74,545,000
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	627,168,000	639,925,000
Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	843,999,000	656,572,000
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	16,669,000	16,811,000
Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	616,562,000	611,924,000
Financial Services Industry [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	205,000	187,000
Other Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	5,541,000	5,811,000
Interest Rate Lock Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	5,984,000	10,380,000
Derivative financial liabilities	4,867,000	25,000
Forward Sales Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	0	430,000
Derivative financial liabilities	655,000	36,000
Interest Rate Swap Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	44,500,000	21,328,000
Derivative financial liabilities	84,000	3,197,000
TBA Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	11,067,000	127,000
Derivative financial liabilities	0	470,000
Equity Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	6,611,000	6,406,000
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	5,608,000	5,758,000
Available for sale equity securities	12,357,000	12,404,000
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	5,608,000	5,758,000
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	205,000	187,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	5,541,000	5,811,000
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
Derivative financial liabilities	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
Derivative financial liabilities	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
Derivative financial liabilities	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 assets	0	0
Derivative financial liabilities	0	0
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	6,611,000	6,406,000
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	31,690,000	40,307,000
Derivative financial assets	46,624,000	22,760,000
Derivative financial liabilities	511,000	3,197,000
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	4,755,326,000	4,036,941,000
Available for sale equity securities	0	0
Loans held for sale	31,690,000	40,307,000
Derivative financial assets	46,624,000	22,760,000
Derivative financial liabilities	511,000	3,197,000
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	371,392,000	81,850,000
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	795,512,000	847,298,000
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	1,389,535,000	1,113,774,000
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	100,097,000	74,545,000
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	627,168,000	639,925,000
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	843,999,000	656,572,000
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	16,669,000	16,811,000
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	610,954,000	606,166,000
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] | Other Equity Securities [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	192,000	936,000
Derivative financial liabilities	169,000	0
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	430,000
Derivative financial liabilities	258,000	0
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	44,500,000	21,328,000
Derivative financial liabilities	84,000	3,197,000
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 assets	1,932,000	66,000
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	308,350,000	464,109,000
Derivative financial assets	14,927,000	9,505,000
Derivative financial liabilities	5,095,000	531,000
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	308,350,000	464,109,000
Derivative financial assets	14,927,000	9,505,000
Derivative financial liabilities	5,095,000	531,000
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] | Other Equity Securities [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	5,792,000	9,444,000
Derivative financial liabilities	4,698,000	25,000
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	0	0
Derivative financial liabilities	397,000	36,000
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
Derivative financial liabilities	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 assets	9,135,000	61,000
Derivative financial liabilities	0	470,000
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 Measurements -_2

Fair Values of Measurements - 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	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Loans Held For Sale [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	$ 464,109	$ 654,733
Total gains or losses during the period recognized in earnings	16,185	138,771
Originations	803,186	4,984,363
Sales	(975,130)	(5,313,758)
Balance, end of period	308,350	464,109
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	(1,295)	10,506
Derivative Financial Assets Tba Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	61	0
Transfers in other	9,074	61
Balance, end of period	9,135	61
Interest Rate Lock Commitments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	9,444	32,011
Transfers in other	(3,652)	(22,567)
Balance, end of period	5,792	9,444
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	5,792	9,444
Derivative Financial Liabilities Forward Sales Commitments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	36	0
Transfers in other	361	36
Balance, end of period	397	36
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	397	36
Derivative Financial Liabilities Tba Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	470	0
Transfers in other	(470)	470
Balance, end of period	0	470
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	0	470
Derivative Financial Liabilities Interest Rate Lock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	25	0
Transfers in other	4,673	25
Balance, end of period	4,698	25
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	$ 4,698	$ 25

Fair Values of Measurements -_3

Fair Values of Measurements - Schedule of Changes in Fair Value Included in Earnings of Financial Instruments for which Fair Value Option has been Elected (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Mortgage Banking [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Income from mortgage banking activities	$ (11,882)	$ (17,851)

Fair Values of Measurements -_4

Fair Values of Measurements - 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	Mar. 31, 2022	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Loans held for sale, unpaid principal balance	$ 341,284	$ 493,340
Loans held for sale, fair value	340,040	504,416
Loans held for sale, fair value over/(under) unpaid principal balance	$ (1,244)	$ 11,076

Fair Values of Measurements -_5

Fair Values of Measurements - Summary of Financial Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
YTD Losses, Individually assessed loans	$ (255)
YTD Losses, OREO	(75)		$ (4,020)
YTD Losses, Mortgage servicing rights	0	$ 0
OREO	13,641		14,823
Mortgage servicing rights	23,089	$ 22,018
Mortgage Servicing Rights [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
YTD Losses, Mortgage servicing rights	883		(629)
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Individually assessed loans			65,431
OREO			14,823
Mortgage servicing rights			27,355
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	24,261		0
OREO	13,641		0
Mortgage servicing rights	37,740		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	8,393		46,830
OREO	13,475		3,209
Mortgage servicing rights	0		0
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Individually assessed loans	15,868		18,601
OREO	166		11,614
Mortgage servicing rights	$ 37,740		$ 27,355

Fair Values of Measurements -_6

Fair Values of Measurements - Summary of Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 2,803,093	$ 3,758,170
Securities available for sale	4,760,934	4,042,699
Securities held to maturity	1,001	1,001
Other securities	246,420	239,645
Loans held for sale	340,040	504,416
Net loans	18,392,086	18,023,648
Deposits	23,474,301	23,350,263
Derivative financial liabilities	0	0
Mortgage servicing rights	23,089	23,144
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	2,803,093	3,758,170
Securities available for sale	4,760,934	4,042,699
Securities held to maturity	1,001	1,001
Other securities	246,420	239,645
Loans held for sale	340,040	504,416
Net loans	18,177,492	17,807,632
Derivative financial assets	61,551	32,265
Deposits	23,474,301	23,350,263
Short-term borrowings	136,370	128,844
Long-term borrowings	817,235	817,394
Derivative financial liabilities	5,606	3,728
Mortgage servicing rights	23,089	23,144
Carrying Amount [Member] | Marketable Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	12,357	12,404
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	2,803,093	3,758,170
Securities available for sale	4,760,934	4,042,699
Securities held to maturity	1,020	1,020
Other securities	234,099	227,663
Loans held for sale	340,040	504,416
Net loans	17,323,530	17,119,202
Derivative financial assets	61,551	32,265
Deposits	23,455,019	23,334,431
Short-term borrowings	136,370	128,844
Long-term borrowings	775,896	773,291
Derivative financial liabilities	5,606	3,728
Mortgage servicing rights	37,740	27,355
Fair Value [Member] | Marketable Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	12,357	12,404
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	5,608	5,758
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
Deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Derivative financial liabilities	0	0
Mortgage servicing rights	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	12,357	12,404
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	2,803,093	3,758,170
Securities available for sale	4,755,326	4,036,941
Securities held to maturity	0	0
Other securities	0	0
Loans held for sale	31,690	40,307
Net loans	0	0
Derivative financial assets	46,624	22,760
Deposits	0	23,334,431
Short-term borrowings	136,370	128,844
Long-term borrowings	775,896	773,291
Derivative financial liabilities	511	3,197
Mortgage servicing rights	0	0
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	234,099	227,663
Loans held for sale	308,350	464,109
Net loans	17,323,530	17,119,202
Derivative financial assets	14,927	9,505
Deposits	23,455,019	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Derivative financial liabilities	5,095	531
Mortgage servicing rights	37,740	27,355
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)	3 Months Ended
	Mar. 31, 2022Trust
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]
Number of statutory business trusts	20
Percentage of equity shares of each trust owned by the company	100.00%

Variable Interest Entities - In

Variable Interest Entities - Information Related to Statutory Trusts (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
United Statutory Trust III [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 17, 2003
Amount of Capital Securities Issued	$ 20,000
Interest Rate	3-month
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
Interest Rate	3-month
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
Interest Rate	3-month
Maturity Date	Oct. 1, 2037
United Statutory Trust VI [Member]
Variable Interest Entity [Line Items]
Issuance Date	Sep. 20, 2007
Amount of Capital Securities Issued	$ 30,000
Interest Rate	3-month
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
Interest Rate	3-month
Maturity Date	Oct. 8, 2033
Premier Statutory Trust III [Member]
Variable Interest Entity [Line Items]
Issuance Date	May 16, 2005
Amount of Capital Securities Issued	$ 8,000
Interest Rate	3-month
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
Interest Rate	3-month
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
Interest Rate	3-month
Maturity Date	Mar. 1, 2037
Centra Statutory Trust I [Member]
Variable Interest Entity [Line Items]
Issuance Date	Sep. 20, 2004
Amount of Capital Securities Issued	$ 10,000
Interest Rate	3-month
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
Interest Rate	3-month
Maturity Date	Jul. 7, 2036
Virginia Commerce Trust II [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 19, 2002
Amount of Capital Securities Issued	$ 15,000
Interest Rate	6-month
Maturity Date	Dec. 19, 2032
Virginia Commerce Trust III [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 20, 2005
Amount of Capital Securities Issued	$ 25,000
Interest Rate	3-month
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
Interest Rate	3-month
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
Interest Rate	3-month
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
Interest Rate	Prime
Maturity Date	Dec. 31, 2032
Carolina Financial Capital Trust II [Member]
Variable Interest Entity [Line Items]
Issuance Date	Nov. 5, 2003
Amount of Capital Securities Issued	$ 10,000
Interest Rate	3-month
Maturity Date	Jan. 7, 2034
Greer Capital Trust I [Member]
Variable Interest Entity [Line Items]
Issuance Date	Oct. 12, 2004
Amount of Capital Securities Issued	$ 6,000
Interest Rate	3-month
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
Interest Rate	3-month
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
Interest Rate	3-month
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
Interest Rate	3-month
Maturity Date	Dec. 12, 2033

Variable Interest Entities - Su

Variable Interest Entities - Summary of Quantitative Information Related to Significant Involvement in Unconsolidated Variable Interest Entities (Detail) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Aggregate Assets		$ 29,365,511	$ 29,328,902
Aggregate Liabilities		24,770,371	24,610,274
Risk Of Loss		29,365,511
Trust Preferred Securities [Member]
Variable Interest Entity [Line Items]
Aggregate Assets		299,720	299,531
Aggregate Liabilities		288,653	288,499
Risk Of Loss	[1]	$ 11,067	$ 11,032
[1]	Represents investment in VIEs.

Segment Information - Summary o

Segment Information - Summary of Segment Reporting Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net interest income	$ 191,502	$ 190,960
Provision for credit losses	(3,410)	143
Other income	46,023	92,573
Other expense	139,173	148,927
Income taxes	20,098	27,565
Net income	81,664	106,898
Total assets (liabilities)	29,365,511
Average assets (liabilities)	29,344,522	26,491,116
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total assets (liabilities)		27,030,755
Operating Segments [Member] | Community Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	189,682	187,197
Provision for credit losses	(3,410)	143
Other income	24,899	26,388
Other expense	114,537	110,017
Income taxes	20,429	21,202
Net income	83,025	82,223
Total assets (liabilities)	29,030,100	26,625,449
Average assets (liabilities)	29,023,901	26,154,094
Operating Segments [Member] | Mortgage Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	2,317	2,650
Provision for credit losses	0	0
Other income	23,397	67,507
Other expense	25,448	41,183
Income taxes	57	5,940
Net income	209	23,034
Total assets (liabilities)	589,503	930,481
Average assets (liabilities)	475,243	716,744
Other [Member]
Segment Reporting Information [Line Items]
Net interest income	(2,125)	(2,138)
Provision for credit losses	0	0
Other income	(60)	1,521
Other expense	(227)	(2,681)
Income taxes	(388)	423
Net income	(1,570)	1,641
Total assets (liabilities)	39,940	40,862
Average assets (liabilities)	33,357	23,029
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net interest income	1,628	3,251
Provision for credit losses	0	0
Other income	(2,213)	(2,843)
Other expense	(585)	408
Income taxes	0	0
Net income	0	0
Total assets (liabilities)	(294,032)	(566,037)
Average assets (liabilities)	$ (187,979)	$ (402,751)