10-Q

FORM 10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2018

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission File Number: 0-13322

United Bankshares, Inc.

(Exact name of registrant as specified in its charter)

West Virginia	55-0641179
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
300 United Center 500 Virginia Street, East Charleston, West Virginia	25301
(Address of principal executive offices)	Zip Code

Registrant’s telephone number, including area code: (304) 424-8716

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ☒    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act:

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐  (Do not check if a smaller reporting company)	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ☐    No  ☒

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Class - Common Stock, $2.50 Par Value; 105,141,385 shares outstanding as of April 30, 2018.

UNITED BANKSHARES, INC. AND SUBSIDIARIES

FORM 10-Q

TABLE OF CONTENTS

		Page
PART I. FINANCIAL INFORMATION
Item 1.	Financial Statements
Consolidated Balance Sheets (Unaudited) March 31, 2018 and December 31, 2017			4
Consolidated Statements of Income (Unaudited) for the Three Ended March 31, 2018 and 2017			5
Consolidated Statements of Comprehensive Income (Unaudited) for the Three Months Ended March 31, 2018 and 2017			7
Consolidated Statement of Changes in Shareholders’ Equity (Unaudited) for the Three Months Ended March 31, 2018			8
Condensed Consolidated Statements of Cash Flows (Unaudited) for the Three Months Ended March 31, 2018 and 2017			9
Notes to Consolidated Financial Statements			10
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		56
Item 3.	Quantitative and Qualitative Disclosures about Market Risk		77
Item 4.	Controls and Procedures		80
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings		81
Item 1A.	Risk Factors		81
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds		81
Item 3.	Defaults Upon Senior Securities		82
Item 4.	Mine Safety Disclosures		82
Item 5.	Other Information		82
Item 6.	Exhibits		82
Signatures			83

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PART I - FINANCIAL INFORMATION

Item 1. FINANCIAL STATEMENTS (UNAUDITED)

The March 31, 2018 and December 31, 2017, consolidated balance sheets of United Bankshares, Inc. and Subsidiaries (“United” or the “Company”), consolidated statements of income and comprehensive income for the three months ended March 31, 2018 and 2017, the related consolidated statement of changes in shareholders’ equity for the three months ended March 31, 2018, the related condensed consolidated statements of cash flows for the three months ended March 31, 2018 and 2017, and the notes to consolidated financial statements appear on the following pages.

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CONSOLIDATED BALANCE SHEETS

UNITED BANKSHARES, INC. AND SUBSIDIARIES

(Dollars in thousands, except par value)

	March 31 2018			December 31 2017
	(Unaudited)			(Note 1)
Assets
Cash and due from banks	$	178,071		$	196,742
Interest-bearing deposits with other banks		960,308			1,468,636
Federal funds sold		791			789
Total cash and cash equivalents		1,139,170			1,666,167
Securities available for sale at estimated fair value (amortized cost-$2,119,071 at March 31, 2018 and $1,900,684 at December 31, 2017)		2,085,111			1,888,756
Securities held to maturity (estimated fair value-$20,006 at March 31, 2018 and $20,018 at December 31, 2017)		20,405			20,428
Equity securities at estimated fair value		11,160			0
Other investment securities		152,287			162,461
Loans held for sale (at fair value-$192,673 at March 31, 2018 and $263,308 at December 31, 2017)		193,915			265,955
Loans		12,998,435			13,027,337
Less: Unearned income		(14,018	)		(15,916	)
Loans net of unearned income		12,984,417			13,011,421
Less: Allowance for loan losses		(76,653	)		(76,627	)
Net loans		12,907,764			12,934,794
Bank premises and equipment		103,009			104,894
Goodwill		1,478,580			1,478,380
Accrued interest receivable		54,815			52,815
Other assets		473,486			484,309
TOTAL ASSETS	$	18,619,702		$	19,058,959
Liabilities
Deposits:
Noninterest-bearing	$	4,344,203		$	4,294,687
Interest-bearing		9,301,965			9,535,904
Total deposits		13,646,168			13,830,591
Borrowings:
Federal funds purchased		17,615			16,235
Securities sold under agreements to repurchase		250,771			311,352
Federal Home Loan Bank borrowings		1,060,948			1,271,531
Other long-term borrowings		233,961			242,446
Reserve for lending-related commitments		755			679
Accrued expenses and other liabilities		158,171			145,595
TOTAL LIABILITIES		15,368,389			15,818,429
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-105,181,868 and 105,069,821 at March 31, 2018 and December 31, 2017, respectively, including 40,698 and 29,173 shares in treasury at March 31, 2018 and December 31, 2017, respectively		262,955			262,675
Surplus		2,130,092			2,129,077
Retained earnings		924,263			891,816
Accumulated other comprehensive loss		(64,553	)		(42,025	)
Treasury stock, at cost		(1,444	)		(1,013	)
TOTAL SHAREHOLDERS’ EQUITY		3,251,313			3,240,530
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$	18,619,702		$	19,058,959

See notes to consolidated unaudited financial statements.

4

CONSOLIDATED STATEMENTS OF INCOME (Unaudited)

UNITED BANKSHARES, INC. AND SUBSIDIARIES

(Dollars in thousands, except per share data)

	Three Months Ended
	March 31
	2018			2017
Interest income
Interest and fees on loans	$	148,928		$	108,942
Interest on federal funds sold and other short-term investments		4,917			2,686
Interest and dividends on securities:
Taxable		11,875			8,011
Tax-exempt		1,465			1,119
Total interest income		167,185			120,758
Interest expense
Interest on deposits		15,657			8,468
Interest on short-term borrowings		421			304
Interest on long-term borrowings		7,064			4,366
Total interest expense		23,142			13,138
Net interest income		144,043			107,620
Provision for loan losses		5,178			5,899
Net interest income after provision for loan losses		138,865			101,721
Other income
Fees from trust services		3,091			3,030
Fees from brokerage services		2,224			1,856
Fees from deposit services		8,230			7,706
Bankcard fees and merchant discounts		1,356			884
Other service charges, commissions, and fees		509			477
Income from bank-owned life insurance		1,254			1,217
Income from mortgage banking activities		14,570			675
Net investment securities (losses) gains		(485	)		3,940
Other income		443			361
Total other income		31,192			20,146
Other expense
Employee compensation		40,836			24,033
Employee benefits		9,571			6,903
Net occupancy expense		9,427			6,784
Other real estate owned (OREO) expense		946			1,414
Equipment expense		3,157			1,965
Data processing expense		5,850			4,043
Bankcard processing expense		466			465
FDIC insurance expense		1,848			1,751
Other expense		18,351			15,484
Total other expense		90,452			62,842
Income before income taxes		79,605			59,025
Income taxes		17,899			20,216
Net income	$	61,706		$	38,809

5

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - continued

UNITED BANKSHARES, INC. AND SUBSIDIARIES

(Dollars in thousands, except per share data)

	Three Months Ended
	March 31
	2018		2017
Earnings per common share:
Basic	$	0.59	$	0.48
Diluted	$	0.59	$	0.48
Dividends per common share	$	0.34	$	0.33
Average outstanding shares:
Basic		104,859,427		80,902,368
Diluted		105,162,858		81,306,540

See notes to consolidated unaudited financial statements

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)

UNITED BANKSHARES, INC. AND SUBSIDIARIES

(Dollars in thousands)

	Three Months Ended
	March 31
	2018			2017
Net income	$	61,706		$	38,809
Change in net unrealized gain on available-for-sale (AFS) securities, net of tax		(16,773	)		3,378
Accretion of the net unrealized loss on the transfer of AFS securities to held-to-maturity (HTM) securities, net of tax		1			1
Change in defined benefit pension plan, net of tax		733			695
Comprehensive income, net of tax	$	45,667		$	42,883

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CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS’ EQUITY (Unaudited)

UNITED BANKSHARES, INC. AND SUBSIDIARIES

(Dollars in thousands, except per share data)

	Three Months Ended March 31, 2018
											Accumulated
	Common Stock										Other						Total
			Par					Retained			Comprehensive			Treasury			Shareholders’
	Shares		Value		Surplus			Earnings			Income (Loss)			Stock			Equity
Balance at January 1, 2018		105,069,821	$	262,675	$	2,129,077		$	891,816		($	42,025	)	($	1,013	)	$	3,240,530
Cumulative effect of adopting Accounting Standard Update 2016-01									136			(136	)					0
Reclass due to adopting Accounting Standard Update 2018-02									6,353			(6,353	)					0
Comprehensive income:
Net income		0		0		0			61,706			0			0			61,706
Other comprehensive income, net of tax:		0		0		0			0			(16,039	)		0			(16,039	)
Total comprehensive income, net of tax																		45,667
Stock based compensation expense		0		0		968			0			0			0			968
Purchase of treasury stock (10,842 shares)		0		0		0			0			0			(404	)		(404	)
Cash dividends ($0.34 per share)		0							(35,748	)		0			0			(35,748	)
Grant of restricted stock (97,004 shares)		97,004		243		(243	)		0			0			0			0
Forfeiture of restricted stock (683 shares)		0		0		27			0			0			(27	)		0
Common stock options exercised (15,043 shares)		15,043		37		263			0			0			0			300
Balance at March 31, 2018		105,181,868	$	262,955	$	2,130,092		$	924,263		($	64,553	)	($	1,444	)	$	3,251,313

See notes to consolidated unaudited financial statements.

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

UNITED BANKSHARES, INC. AND SUBSIDIARIES

(Dollars in thousands)

	Three Months Ended
	March 31
	2018			2017
NET CASH PROVIDED BY OPERATING ACTIVITIES	$	158,484		$	64,973
INVESTING ACTIVITIES
Proceeds from maturities and calls of securities held to maturity		1			2,886
Proceeds from sales of securities available for sale		36,850			7,376
Proceeds from maturities and calls of securities available for sale		66,067			91,422
Purchases of securities available for sale		(330,031	)		(64,335	)
Proceeds from sales of equity securities		159			0
Purchases of equity securities		(181	)		0
Proceeds from sales and redemptions of other investment securities		9,046			7,465
Purchases of other investment securities		(3,672	)		(6,227	)
Purchases of bank premises and equipment		(756	)		(1,680	)
Proceeds from sales of bank premises and equipment		1			0
Proceeds from the sales of OREO properties		3,433			1,558
Net change in loans		32,091			(70,415	)
NET CASH USED IN INVESTING ACTIVITIES		(186,992	)		(31,950	)
FINANCING ACTIVITIES
Cash dividends paid		(35,713	)		(25,311	)
Acquisition of treasury stock		(404	)		0
Proceeds from exercise of stock options		300			324
Repayment of long-term Federal Home Loan Bank borrowings		(625,000	)		(805,176	)
Proceeds from issuance of long-term Federal Home Loan Bank borrowings		615,000			795,000
Repayment of trust preferred issuance		(9,374	)		0
Changes in:
Deposits		(184,097	)		265,509
Federal funds purchased, securities sold under agreements to repurchase and other short-term borrowings		(259,201	)		(30,568	)
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES		(498,489	)		199,778
(Decrease) Increase in cash and cash equivalents		(526,997	)		232,801
Cash and cash equivalents at beginning of year		1,666,167			1,434,527
Cash and cash equivalents at end of period	$	1,139,170		$	1,667,328
Supplemental information
Noncash investing activities:
Transfers of loans to OREO	$	527		$	951

See notes to consolidated unaudited financial statements.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

UNITED BANKSHARES, INC. AND SUBSIDIARIES

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 and Article 10 of Regulation S-X. Accordingly, the financial statements do not contain all of the information and footnotes required by accounting principles generally accepted in the United States. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. The financial statements presented as of March 31, 2018 and 2017 and for the three-month periods then ended have not been audited. The consolidated balance sheet as of December 31, 2017 has been extracted from the audited financial statements included in United’s 2017 Annual Report to Shareholders. The accounting and reporting policies followed in the presentation of these financial statements are consistent with those applied in the preparation of the 2017 Annual Report of United on Form 10-K. To conform to the 2018 presentation, certain reclassifications have been made to prior period amounts, which had no impact on net income, comprehensive income, or stockholders’ equity. In the opinion of management, all adjustments necessary for a fair presentation of financial position and results of operations for the interim periods have been made. Such adjustments are of a normal and recurring nature.

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 February 2018, the FASB issued ASU No. 2018-03, “Technical Corrections and Improvements to Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.” ASU 2018-03 clarifies that entities that use the measurement alternative for equity securities without readily determinable fair values can change its measurement approach to fair value. This election is irrevocable and will apply to all future purchases of identical or similar investments of the same issuer. The amended guidance also clarifies that adjustments made under the measurement alternative should reflect the fair value of the security as of the date that an observable transaction took place rather than the current reporting date. Entities will use the prospective transition approach only for securities they elect to measure using the measurement alternative. ASU No. 2018-03 is effective for interim and annual reporting periods beginning after December 15, 2017; early adoption is permitted. ASU No. 2018-03 did not have a material impact on the Company’s financial condition or results of operations.

In February 2018, the FASB issued ASU No. 2018-02, “Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income,” to help organizations address certain stranded income tax effects in accumulated other comprehensive income (AOCI) resulting from the Tax Cuts and Jobs Act (the “Tax Act”). This ASU provides financial statement preparers with an option to reclassify stranded tax effects within AOCI to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Act (or portion thereof) is recorded. The amendments are effective for all organizations for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. Organizations should apply the proposed amendments either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Act is recognized. United adopted ASU No. 2018-02 in the first quarter of 2018 and reclassified $6,353 of stranded income tax effected amounts in AOCI to retained earnings.

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In August 2017, the FASB issued ASU No. 2017-12, “Targeting Improvement to Accounting for Hedging Activities.” This ASU amends ASC 815 and its objectives are to improve the transparency and understandability of information conveyed to financial statement users about an entity’s risk management activities by better aligning the entity’s financial reporting for hedging relationships with those risk management activities and reduce the complexity and simplify the application of hedge accounting by preparers. ASU No. 2017-12 is effective for interim and annual reporting periods beginning after December 15, 2018; early adoption is permitted. ASU No. 2017-12 is not expected to have a material impact on the Company’s financial condition or results of operations.

In July 2017, the FASB issued ASU No. 2017-11, “Part I, Accounting for Certain Financial Instruments with Down Round Features and Part II, Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling interests with a Scope Exception.” Part I of this ASU simplifies the accounting for financial instruments that include down round features while the amendments in Part II, which do not have an accounting effect, address the difficulty of navigating the guidance in ASC 480, “Distinguishing Liabilities from Equity”, due to the existence of extensive pending content in the Codification. ASU No. 2017-11 is effective for interim and annual reporting periods beginning after December 15, 2018. ASU No. 2017-11 is not expected to have a material impact on the Company’s financial condition or results of operations.

In May 2017, the FASB issued ASU No. 2017-09, “Stock Compensation, Scope of Modification Accounting.” This ASU clarifies when changes to the terms of conditions of a share-based payment award must be accounted for as modifications. Companies will apply the modification accounting guidance if the value, vesting conditions or classification of the award changes. The new guidance should reduce diversity in practice and result in fewer changes to the terms of an award being accounted for as modifications, as the guidance will allow companies to make certain non-substantive changes to awards without accounting for them as modifications. It does not change the accounting for modifications. ASU No. 2017-09 is effective for interim and annual reporting periods beginning after December 15, 2017; early adoption is permitted. ASU No. 2017-09 did not have a material impact on the Company’s financial condition or results of operations.

In March 2017, the FASB issued ASU 2017-07, “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” ASU 2017-07 amends ASC 715, “Compensation - Retirement Benefits” and will change how employers that sponsor defined benefit pension and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. Employers will present the service cost component of net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization in assets. Employers will present the other components of the net periodic benefit cost separately from the line item that includes the service cost and outside of any subtotal of operating income, if one is presented. These components will not be eligible for capitalization in assets. ASU 2017-07 was effective for United on January 1, 2018. The adoption of ASU 2017-07 had a slight change in presentation but did not materially impact the Company’s financial condition or results of operations. United used amounts previously disclosed in its Employee Benefits Plan footnote (Note 14) to retrospectively adjust prior period amounts of employee compensation and employee benefits within United’s Consolidated Statements of Income.

In January 2017, the FASB issued ASU 2017-04, “Intangibles – Goodwill and Other (topic 350).” ASU 2017-04 eliminates the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge. Instead, entities will record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value. ASU 2017-04 is effective for United on January 1, 2020, with early adoption permitted, and management is currently evaluating the possible impact this standard may have on the Company’s financial condition or results of operations.

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In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business.” ASU 2017-01 changes the definition of a business to assist entities with evaluation when a set of transferred assets and activities is a business. The guidance requires an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets. The guidance also requires a business to include at least one substantive process and narrows the definition of outputs by more closely aligning it with how outputs are described in ASC 606. ASU 2017-01 was effective for United on January 1, 2018 and did not have a material impact on the Company’s financial condition or results of operations.

In August 2016, the FASB issued ASU 2016-15, “Classification of Certain Cash Receipts and Cash Payments.” ASU 2016-15 amends ASC topic 230 to add and clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows as a result of diversity in practice and in certain circumstances, financial statement restatements. Entities should apply ASU 2016-15 using a retrospective transition method to each period presented. ASU 2016-15 was effective for United on January 1, 2018 and did not have a material impact on the Company’s financial condition or results of operations.

In June 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses.” ASU 2016-13 changes the impairment model for most financial assets and certain other instruments that aren’t measured at fair value through net income. The standard will replace today’s “incurred loss” approach with an “expected loss” model for instruments measured at amortized cost and require entities to record allowances for available-for-sale debt securities rather than reduce the carrying amount under the current other-than-temporary impairment (OTTI) model. ASU 2016-13 also simplifies the accounting model for purchased credit-impaired debt securities and loans. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. ASU 2016-13 is effective for United on January 1, 2020, with early adoption permitted, and management is currently evaluating the possible impact this standard may have on the Company’s financial condition or results of operations.

In March 2016, the FASB issued ASU 2016-09, “Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.” ASU 2016-09 will change certain aspects of accounting for share-based payments to employees. The new guidance will, amongst other things, require all income tax effects of awards to be recognized in the income statement when the awards vest or are settled. The requirement to report those income tax effects in earnings was applied to settlements occurring on or after January 1, 2017 and the impact of applying that guidance reduced reporting income tax expense by $1,048 for the year of 2017. ASU 2016-09 also allows an employer to repurchase more of an employee’s shares than it could previously for tax withholding purposes without triggering liability accounting and make a policy election to account for forfeitures as they occur. The Company will continue to estimate the number of awards expected to be forfeited and adjust the estimate when it is no longer probable that the employee will fulfill the service condition, as was previously required. ASU 2016-09 also requires that all income tax-related cash flows resulting from share-based payments be reported as operating activities in the statement of cash flows. Previously, income tax benefits at settlement of an award were reported as a reduction to operating cash flows and an increase to financing cash flows to the extent that those benefits exceeded the income tax benefits reported in earnings during the award’s vesting period. The adoption of ASU 2016-09 did not have a material impact on the Company’s financial condition or results of operations.

In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)”. ASU 2016-02 includes a lessee accounting model that recognizes two types of leases, finance leases and operating leases, while lessor accounting will remain largely unchanged from the current GAAP. ASU 2016-02 requires, amongst other things, that a lessee recognize on the balance sheet a right-of-use asset and a lease liability for leases, which has not yet been quantified, with terms of more than twelve months. The recognition, measurement, and presentation of expenses and cash flows arising from a

12

lease by a lessee will depend on its classification as a finance or operating lease. ASU 2016-02 is effective for United on January 1, 2019. The Company is currently assessing the impact of the adoption of ASU 2016-02 on the Company’s results of operations, financial position and cash flows. Significant implementation matters being addressed by the Company include gathering, documenting and analyzing all leases to assess the impact on accounting and disclosures, evaluating and implementing a third-party lease accounting software solution, assessing the impact to its internal controls over financial reporting, and documenting the new lease accounting process.

In January 2016, the FASB issued ASU 2016-01, “Financial Instruments Overall: Recognition and Measurement of Financial Assets and Financial Liabilities.” ASU 2016-01 makes changes to the classification and measurement of investments in equity securities, the presentation of certain fair value changes for financial liabilities measured at fair value under the fair value option and disclosure of fair value of instruments. In addition, ASU 2016-01 clarifies guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. ASU 2016-01 was adopted by United on January 1, 2018 and did not have a significant impact on the Company’s financial condition or results of operations.

In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 supersedes the revenue recognition requirements in ASC topic 605, “Revenue Recognition”, and most industry-specific guidance throughout the ASC. The amendments require an entity to recognize revenue upon the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. The new revenue recognition standard sets forth a five-step principle-based approach for determining revenue recognition. For United, revenue is comprised of net interest income and noninterest income. As the standard does not apply to revenue associated with financial instruments, net interest income, gains and losses from securities, income from bank-owned life insurance (BOLI) and income from mortgage banking activities are not impacted by the standard. Based on a review and evaluation of a number of revenue contracts, United’s management determined that ASU 2014-09 impacts certain recurring revenue streams related to noninterest income such as fees from trust and brokerage services. However, based on an assessment of these revenue streams under the standard, management concluded that ASU 2014-09 does not have a material impact on the Company’s financial condition or results of operations. In addition, in the Company’s evaluation of the nature of its contracts with customers, United has determined that further disaggregation of revenue from contracts with customers into more granular categories beyond those presented in the Consolidated Statements of Income was not necessary. ASU 2014-09 was adopted by United on January 1, 2018 using the modified-retrospective transition method. No cumulative effect adjustment was made to the opening balance of retained earnings because the amount was considered immaterial. The impact of ASU 2014-09 for the first three months of 2018 were also immaterial to United’s consolidated financial position, results of operations, shareholders’ equity, cash flows and disclosures.

Descriptions of our revenue-generating activities that are within the scope of ASC topic 606, which are presented in our Consolidated Statements of Income as components of Other Income are discussed below. There are no significant judgements relating to the amount and timing of revenue recognition for those revenue streams under the scope of ASC topic 606.

Fees from Trust Services

Revenue from trust services primarily is comprised of fees earned from the management and administration of trusts and other customer assets. Trust services include custody of assets, investment management, escrow services, and similar fiduciary activities. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days after month end through a direct charge to customers’ accounts.

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Fees from Brokerage Services

Revenue from brokerage services are recorded as the income is earned at the time the related service is performed. In return for such services, the Company charges a commission for the sales of various securities products primarily consisting of investment company shares, annuity products, and corporate debt and equity securities, for its selling and administrative efforts. For account supervision, advisory, and administrative services, revenue is recognized over a period of time as earned based on customer account balances and activity.

Fees from Deposit Services

Service charges on deposit accounts consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, check orders, ATM activity fees, debit card fees, and other deposit account related fees. Revenue is recognized when our performance obligation is completed which is generally monthly for account maintenance services or when a transaction has been completed (ATM or debit card activity).

Bankcard Fees and Merchant Discounts

Bankcard fees and merchant discounts are primarily comprised of credit card income and merchant services income. Credit card income is primarily comprised of interchange fees earned whenever the Company’s credit cards are processed through card payment networks such as Visa. Merchant services income mainly represents fees charged to merchants to process their credit card transactions. The Company’s performance obligation for bankcard fees and exchange are largely satisfied, and related revenue recognized at the time services are rendered. Payment is typically received immediately or in the following month.

2. MERGERS AND ACQUISITIONS

Cardinal Financial Corporation

On April 21, 2017 (Cardinal Acquisition Date), United acquired 100% of the outstanding common stock of Cardinal Financial Corporation (Cardinal), headquartered in Tysons Corner, Virginia. The acquisition of Cardinal expands United’s existing footprint in the Washington, D.C. Metropolitan Statistical Area. At consummation, Cardinal had assets of $4,136,008, loans of $3,313,033 and deposits of $3,344,740. Cardinal also operated George Mason Mortgage, LLC (George Mason), a residential mortgage lending company based in Fairfax, Virginia with offices located in Virginia, Maryland, North Carolina, South Carolina and the District of Columbia. As a result of the merger, George Mason became an indirectly-owned subsidiary of United.

The merger was accounted for under the acquisition method of accounting. The results of operations of Cardinal are included in the consolidated results of operations from the Cardinal Acquisition Date.

The aggregate purchase price was approximately $975,254, including common stock valued at $972,499, stock options assumed valued at $2,741, and cash paid for fractional shares of $14. The number of shares issued in the transaction was 23,690,589, which were valued based on the closing market price of $41.05 for United’s common shares on April 21, 2017. The preliminary purchase price has been allocated to the identifiable tangible and intangible assets resulting in preliminary additions to goodwill, core deposit intangibles and the George Mason trade name intangible of $613,486, $28,724 and $1,080, respectively. The core deposit intangibles are expected to be amortized over ten years. The George Mason trade name provides a source of market recognition to attract potential clients and retain existing relationships. United believes the George Mason trade name provides a competitive advantage and is likely going to be used into perpetuity and thus will not be subject to amortization, but rather be evaluated for impairment.

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 Cardinal acquisition is expected to be

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deductible for tax purposes. United used an independent third party to help determine the fair values of the assets and liabilities acquired from Cardinal. As a result of the merger, United recorded preliminary fair value discounts of $144,434 on the loans acquired, $2,281 on leases and $8,738 on trust preferred issuances, respectively, and premiums of $4,408 on land acquired, $5,072 on interest-bearing deposits and $10,740 on long-term FHLB advances, respectively. The remaining discount and premium amounts are being accreted or amortized on an accelerated or straight-line basis over each asset’s or liability’s estimated remaining life at the time of acquisition except for loans and land. The discount on loans will be accreted into income based on the effective yield method. The premium on land will not be amortized. At March 31, 2018, the discounts on leases and trust preferred issuances had an average estimated remaining life of 5.5 years and 16.47 years, respectively, and the premiums on the interest-bearing deposits and the FHLB advances each had an average estimated remaining life of 4.5 years and 4.31 years, respectively. United assumed approximately $1,825 of liabilities to provide severance benefits to terminated employees of Cardinal, which has no remaining balance as of March 31, 2018. The estimated fair values of the acquired assets and assumed liabilities, including identifiable intangible assets and goodwill are preliminary as of March 31, 2018 and are subject to refinement as additional information relative to closing date fair values becomes available. Any subsequent adjustments to the fair values of acquired assets and liabilities assumed, identifiable intangible assets, or other purchase accounting adjustments will result in adjustments to goodwill within the measurement period following the date of acquisition.

In many cases, determining the estimated fair value of the acquired assets and assumed liabilities required United to estimate cash flows expected to result from those assets and liabilities and to discount those cash flows at appropriate rates of interest. The most significant of those determinations related to the fair value of acquired loans. The fair value of the acquired loans was based on the present value of the expected cash flows. Periodic principal and interest cash flows were adjusted for expected losses and prepayments, then discounted to determine the present value and summed to arrive at the estimated fair value. For such loans, the excess of cash flows expected at acquisition over the estimated fair value is recognized as interest income over the remaining lives of the loans. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition reflects the impact of estimated credit losses and other factors, such as prepayments. In accordance with GAAP, there was no carry-over of Cardinal’s previously established allowance for loan losses.

The acquired loans were divided into loans with evidence of credit quality deterioration, which are accounted for under ASC topic 310-30 (acquired impaired) and loans that do not meet this criteria, which are accounted for under ASC topic 310-20 (acquired performing). Acquired impaired loans have experienced a deterioration of credit quality from origination to acquisition for which it is probable that United will be unable to collect all contractually required payments receivable, including both principal and interest. Subsequent decreases in the expected cash flows require United to evaluate the need for additions to the Company’s allowance for credit losses. Subsequent improvements in expected cash flows generally result in the recognition of additional interest income over the then remaining lives of the loans.

In conjunction with the Cardinal merger, the acquired loan portfolio was accounted for at fair value as follows:

	April 21, 2017
Contractually required principal and interest at acquisition	$	4,211,734
Contractual cash flows not expected to be collected		(56,176	)
Expected cash flows at acquisition		4,155,558
Interest component of expected cash flows		(986,959	)
Basis in acquired loans at acquisition – estimated fair value	$	3,168,599

Included in the above table is information related to acquired impaired loans. Specifically, contractually required principal and interest, cash flows expected to be collected and estimated fair value of acquired impaired loans were $132,837, $108,275, and $86,696, respectively.

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The consideration paid for Cardinal’s common equity and the preliminary amounts of acquired identifiable assets and liabilities assumed as of the Cardinal Acquisition Date were as follows:

Purchase price:
Value of common shares issued (23,690,589 shares)	$	972,499
Fair value of stock options assumed		2,741
Cash for fractional shares		14
Total purchase price		975,254
Identifiable assets:
Cash and cash equivalents		44,545
Investment securities		395,829
Loans held for sale		271,301
Loans		3,168,599
Premises and equipment		24,208
Core deposit intangibles		28,724
George Mason trade name intangible		1,080
Other assets		135,383
Total identifiable assets	$	4,069,669
Identifiable liabilities:
Deposits	$	3,349,812
Short-term borrowings		96,215
Long-term borrowings		220,119
Unfavorable lease liability		2,281
Other liabilities		39,474
Total identifiable liabilities		3,707,901
Preliminary fair value of net assets acquired including identifiable intangible assets		361,768
Preliminary resulting goodwill	$	613,486

The operating results of United for the three months ended March 31, 2018 include operating results of acquired assets and assumed liabilities subsequent to the Cardinal Acquisition Date. The operations of United’s metropolitan Washington D.C. geographic area, which primarily includes the acquired operations of Cardinal, provided $340,632 in total revenues, which represents net interest income plus other income, and $157,852 in net income from the period from the Cardinal Acquisition Date to March 31, 2018. Cardinal’s results of operations prior to the Cardinal Acquisition Date are not included in United’s consolidated financial statements.

The following table presents certain unaudited pro forma information for the results of operations for the three months ended March 31, 2017, as if the Cardinal merger had occurred on January 1, 2017. These results combine the historical results of Cardinal 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 Cardinal’s provision for credit losses for the three months ended March 31, 2017 that may not have been necessary had the acquired loans been recorded at fair value as of the beginning of 2017. 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, 2017
Total Revenues (1)	$	191,052
Net Income		54,710

⁽¹⁾  Represents net interest income plus other income

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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 and estimated fair values of securities available for sale are summarized as follows.

	March 31, 2018
			Gross		Gross		Estimated		Cumulative
	Amortized		Unrealized		Unrealized		Fair		OTTI in
	Cost		Gains		Losses		Value		AOCI (1)
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	163,718	$	237	$	849	$	163,106	$	0
State and political subdivisions		297,481		1,300		5,069		293,712		0
Residential mortgage-backed securities
Agency		934,557		993		20,003		915,547		0
Non-agency		4,665		501		0		5,166		86
Commercial mortgage-backed securities
Agency		485,851		281		9,353		476,779		0
Asset-backed securities		146,774		285		475		146,584		0
Trust preferred collateralized debt obligations		9,192		0		1,128		8,064		2,586
Single issue trust preferred securities		13,433		327		614		13,146		0
Other corporate securities		63,400		337		730		63,007		0
Total	$	2,119,071	$	4,261	$	38,221	$	2,085,111	$	2,672
	December 31, 2017
			Gross		Gross		Estimated		Cumulative
	Amortized		Unrealized		Unrealized		Fair		OTTI in
	Cost		Gains		Losses		Value		AOCI (1)
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	114,735	$	385	$	362	$	114,758	$	0
State and political subdivisions		303,101		3,197		2,429		303,869		0
Residential mortgage-backed securities
Agency		821,857		2,096		9,360		814,593		0
Non-agency		4,969		543		0		5,512		86
Commercial mortgage-backed securities
Agency		457,107		1,059		3,309		454,857		0
Asset-backed securities		109,829		148		7		109,970		0
Trust preferred collateralized debt obligations		37,856		542		4,129		34,269		20,770
Single issue trust preferred securities		13,417		368		1,225		12,560		0
Other corporate securities		28,101		407		18		28,490		0
Marketable equity securities		9,712		179		13		9,878		0
Total	$	1,900,684	$	8,924	$	20,852	$	1,888,756	$	20,856

(1) Non-credit related other-than-temporary impairment in accumulated other comprehensive income. Amounts are before-tax.

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The following is a summary of securities available-for-sale which were in an unrealized loss position at March 31, 2018 and December 31, 2017.

	Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
March 31, 2018
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	65,919	$	722	$	22,751	$	127
State and political subdivisions		137,221		1,584		55,674		3,485
Residential mortgage-backed securities
Agency		682,082		13,128		172,052		6,875
Non-agency		0		0		0		0
Commercial mortgage-backed securities
Agency		391,087		7,961		60,595		1,392
Asset-backed securities		56,833		475		0		0
Trust preferred collateralized debt obligations		0		0		5,049		1,128
Single issue trust preferred securities		0		0		5,100		614
Other corporate securities		41,634		730		0		0
Total	$	1,374,776	$	24,600	$	321,221	$	13,621
	Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
December 31, 2017
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	36,678	$	230	$	22,920	$	132
State and political subdivisions		82,896		566		59,432		1,863
Residential mortgage-backed securities
Agency		460,414		4,621		182,482		4,739
Non-agency		0		0		0		0
Commercial mortgage-backed securities
Agency		282,858		2,386		70,763		923
Asset-backed securities		27,931		7		0		0
Trust preferred collateralized debt obligations		0		0		28,629		4,129
Single issue trust preferred securities		0		0		4,485		1,225
Other corporate securities		6,975		18		0		0
Marketable equity securities		0		0		363		13
Total	$	897,752	$	7,828	$	369,074	$	13,024

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 those sales and calls. Gains or losses on sales and calls of available for sale securities were recognized by the specific identification method. The realized losses relate to sales of securities within a rabbi trust for the payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries.

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	Three Months Ended March  31
	2018		2017
Proceeds from sales and calls	$	99,703	$	98,798
Gross realized gains		1,163		214
Gross realized losses		1,312		0

At March 31, 2018, gross unrealized losses on available for sale securities were $38,221 on 635 securities of a total portfolio of 870 available for sale securities. Securities in an unrealized loss position at March 31, 2018 consisted primarily of trust preferred collateralized debt obligations (Trup Cdos), single issue trust preferred securities, state and political subdivision securities, and agency commercial and residential mortgage-backed securities. The Trup Cdos and the single issue trust preferred securities relate to securities of financial institutions. The state and political subdivisions securities relate to securities issued by various municipalities. The agency commercial and residential mortgage-backed securities relate to commercial and residential properties and provide a guaranty of full and timely payments of principal and interest by the issuing agency.

In determining whether or not a security is other-than-temporarily impaired (OTTI), management considered the severity and the duration 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.

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 $297,481 at March 31, 2018. As of March 31, 2018, approximately 77% 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 less than one percent of the portfolio was rated below investment grade as of March 31, 2018. 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 were other-than-temporarily impaired at March 31, 2018.

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 $1,420,408 at March 31, 2018. Of the $1,420,408 amount, $485,851 was related to agency commercial mortgage-backed securities and $934,557 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 were other-than-temporarily impaired at March 31, 2018.

Non-agency residential mortgage-backed securities

United’s non-agency residential mortgage-backed securities portfolio relates to securities of various private label issuers. The total amortized cost of available for sale non-agency residential mortgage-backed securities was $4,665 at March 31, 2018. Of the $4,665 amount, $473 thousand was rated above investment grade and $4,192 was rated below investment grade. The entire portfolio of the non-agency residential mortgage-backed securities are either the senior or super-senior tranches of their respective structure. Based upon management’s analysis and judgment, it was determined that none of the non-agency mortgage-backed securities were other-than-temporarily impaired at March 31, 2018.

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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). 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 2018, it was determined that none of the single issue trust preferred securities were other-than-temporarily impaired. 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, 2018 consisted of $7,719 in investment grade bonds and $5,714 in unrated bonds. The investment grade bonds were rated either Baa3 or BBB-. All of the unrated bonds were in an unrealized loss position for twelve months or longer as of March 31, 2018.

Trust preferred collateralized debt obligations (Trup Cdos)

The total amortized cost balance of United’s Trup Cdo portfolio was $9,192 as of March 31, 2018. Compared to the prior quarter, the total amortized cost balance declined by $28,664 due mainly to the sale of seven securities totaling $25,315, and the redemption of one security at par in the amount of $3,300. Of the remaining $9,192, one additional security totaling $3,016 was redeemed at par on April 3, 2018.

For any securities in an unrealized loss position, the Company first assesses its intentions regarding any sale of securities as well as the likelihood that it would be required to sell prior to recovery of the amortized cost. As of March 31, 2018, the Company has determined that it does not intend to sell any Trup Cdo and that it is not more likely than not that the Company will be required to sell such securities before recovery of their amortized cost.

To determine a net realizable value and assess whether other-than-temporary impairment existed, management performed detailed cash flow analysis to determine whether, in management’s judgment, it was more likely that United would not recover the entire amortized cost basis of the security. Except for the debt securities that have already been deemed to be other-than-temporarily impaired, management does not believe any other individual security with an unrealized loss as of March 31, 2018 is other-than-temporarily impaired.

Corporate securities

As of March 31, 2018, United’s Corporate securities portfolio had a total amortized cost balance of $63,400. The majority of the portfolio consisted of debt issuances of corporations representing a variety of industries, including financial institutions. Of the $63,400, 67% was investment grade rated and 33% was unrated. For corporate securities, management has evaluated the near-term prospects of the investment in relation to the severity and duration of any impairment and based on that evaluation, management determined that no corporate securities were other-than-temporarily impaired at March 31, 2018.

Below is a progression of the credit losses on securities which United has recorded other-than-temporary charges. These charges were recorded through earnings and other comprehensive income.

	Three Months Ended March  31
	2018			2017
Balance of cumulative credit losses at beginning of period	$	18,060		$	22,162
Additions for credit losses recognized in earnings during the period:
Additional credit losses on securities for which OTTI was previously recognized		0			0
Reductions for securities sold or paid off during the period		(14,861	)		0
Balance of cumulative credit losses at end of period	$	3,199		$	22,162

The amortized cost and estimated fair value of securities available for sale at March 31, 2018 and December 31, 2017 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.

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	March 31, 2018				December 31, 2017
			Estimated				Estimated
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	52,863	$	52,753	$	50,311	$	50,212
Due after one year through five years		476,361		471,410		386,039		384,585
Due after five years through ten years		445,861		436,757		400,129		398,208
Due after ten years		1,143,986		1,124,191		1,054,493		1,045,873
Marketable equity securities		0		0		9,712		9,878
Total	$	2,119,071	$	2,085,111	$	1,900,684	$	1,888,756

Securities Held to Maturity

The amortized cost and estimated fair values of securities held to maturity are summarized as follows:

	March 31, 2018
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	5,160	$	241	$	0	$	5,401
State and political subdivisions		5,797		9		0		5,806
Residential mortgage-backed securities
Agency		23		3		0		26
Single issue trust preferred securities		9,405		0		652		8,753
Other corporate securities		20		0		0		20
Total	$	20,405	$	253	$	652	$	20,006
	December 31, 2017
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	5,187	$	308	$	0	$	5,495
State and political subdivisions		5,797		10		0		5,807
Residential mortgage-backed securities
Agency		23		3		0		26
Single issue trust preferred securities		9,401		0		731		8,670
Other corporate securities		20		0		0		20
Total	$	20,428	$	321	$	731	$	20,018

Even though the market value of the held-to-maturity investment portfolio is less than its cost, the unrealized loss has no impact on the net worth or regulatory capital requirements of United. As of March 31, 2018, the Company’s largest held-to-maturity single-issue trust preferred exposure was to SunTrust Bank ($7,428). The two held-to-maturity single-issue trust preferred exposures with at least one rating below investment grade included SunTrust Bank ($7,428) and Royal Bank of Scotland ($976).

There were no gross realized gains or losses on calls and sales of held to maturity securities included in earnings for the first quarter of 2018 and 2017.

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The amortized cost and estimated fair value of debt securities held to maturity at March 31, 2018 and December 31, 2017 by contractual maturity are shown below. Expected maturities may differ from contractual maturities because the issuers may have the right to call or prepay obligations without penalties.

	March 31, 2018				December 31, 2017
			Estimated				Estimated
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	0	$	0	$	0	$	0
Due after one year through five years		9,318		9,566		9,344		9,660
Due after five years through ten years		8,091		7,618		5,663		5,343
Due after ten years		2,996		2,822		5,421		5,015
Total	$	20,405	$	20,006	$	20,428	$	20,018

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 $11,160 at March 31, 2018. Prior to March 31, 2018 and the adoption of ASU 2016-01, equity securities were included in available for sale securities.

	Three Months Ended March  31, 2018
Net gains (losses) recognized during the period	$	(36	)
Net gains (losses) recognized during the period on equity securities sold		2
Unrealized gains recognized during the period on equity securities still held at period end		39
Unrealized losses recognized during the period on equity securities still held at period end		77

Other investment securities

During the first quarter of 2018, United evaluated all of its cost method investments to determine if certain events or changes in circumstances during the first quarter of 2018 had a significant adverse effect on the fair value of any of its cost method securities. United determined that there was one security that experienced an adverse event during the first quarter. Total impairment of $300 was recognized on this security. With the exception of this one security, 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 $1,612,649 and $1,403,565 at March 31, 2018 and December 31, 2017, respectively.

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4. LOANS

Major classes of loans are as follows:

	March 31, 2018		December 31, 2017
Commercial, financial and agricultural:
Owner-occupied commercial real estate	$	1,366,980	$	1,361,629
Nonowner-occupied commercial real estate		4,426,776		4,451,298
Other commercial loans		1,952,322		1,998,979
Total commercial, financial & agricultural		7,746,078		7,811,906
Residential real estate		3,065,990		2,996,171
Construction & land development		1,433,125		1,504,907
Consumer:
Bankcard		9,372		10,314
Other consumer		743,870		704,039
Total gross loans	$	12,998,435	$	13,027,337

The table above does not include loans held for sale of $193,915 and $265,955 at March 31, 2018 and December 31, 2017, respectively. Loans held for sale consist of single-family residential real estate loans originated for sale in the secondary market.

The outstanding balances in the table above include previously acquired impaired loans with a recorded investment of $189,675 or 1.46% of total gross loans at March 31, 2018 and $210,521 or 1.62% of total gross loans at December 31, 2017. The contractual principal in these acquired impaired loans was $253,827 and $285,964 at March 31, 2018 and December 31, 2017, respectively. The balances above do not include future accretable net interest (i.e. the difference between the undiscounted expected cash flows and the recorded investment in the loan) on the acquired impaired loans.

Activity for the accretable yield for the first three months of 2018 follows:

Accretable yield at the beginning of the period	$	39,098
Accretion (including cash recoveries)		(4,053	)
Additions		0
Net reclassifications to accretable from non-accretable		4,493
Disposals (including maturities, foreclosures, and charge-offs)		(1,948	)
Accretable yield at the end of the period	$	37,590

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 $35,777 and $36,360 at March 31, 2018 and December 31, 2017, respectively.

5. CREDIT QUALITY

Management monitors the credit quality of its loans on an ongoing basis. Measurement of delinquency and past due status are based on the contractual terms of each loan.

For all loan classes, past due loans are reviewed on a monthly basis to identify loans 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

23

income in the current year is reversed, and unpaid interest accrued in prior years is charged to the allowance for loan losses. United’s method of income recognition for loans 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 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.

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. TDRs can take the form of a reduction of the stated interest rate, splitting a loan into separate loans with market terms on one loan and concessionary terms on the other loan, receipts of assets from a debtor in partial or full satisfaction of a loan, the extension of the maturity date or dates at a stated interest rate lower than the current market rate for new debt with similar risk, the reduction of the face amount or maturity amount of the debt as stated in the instrument or other agreement, the reduction of accrued interest or any other concessionary type of renegotiated debt. As of March 31, 2018, United had TDRs of $48,271 as compared to $50,129 as of December 31, 2017. Of the $48,271 aggregate balance of TDRs at March 31, 2018, $33,592 was on nonaccrual and $85 were 30 to 89 days past due. Of the $50,129 aggregate balance of TDRs at December 31, 2017, $30,868 was on nonaccrual, $95 were 90 days or more past due and $1,254 were 30 to 89 days 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, 2018, there were no commitments to lend additional funds to debtors owing receivables whose terms have been modified in TDRs. At March 31, 2018, United had restructured loans in the amount of $1,760 that were modified by a reduction in the interest rate, $1,891 that were modified by a combination of a reduction in the interest rate and the principal and $44,620 that were modified by a change in terms.

A loan acquired and accounted for under ASC topic 310-30 “Loans and Debt Securities Acquired with Deteriorated Credit Quality” is reported as an accruing loan and a performing asset unless it does not perform in accordance with its restructured contractual provisions.

No loans were restructured during the first quarter of 2018. The following table sets forth United’s troubled debt restructurings that were restructured during the three months ended March 31, 2017, segregated by class of loans.

	Troubled Debt Restructurings
	For the Three Months Ended
	March 31, 2017
	Number of Contracts		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment
Commercial real estate:
Owner-occupied		0	$	0	$	0
Nonowner-occupied		0		0		0
Other commercial		4		2,752		2,741
Residential real estate		0		0		0
Construction & land development		1		1,456		1,450
Consumer:
Bankcard		0		0		0
Other consumer		0		0		0
Total		5	$	4,208	$	4,191

During the first quarter of 2017, $4,191 of restructured loans were modified by a change in terms. In some instances, the post-modification balance on the restructured loans is larger than the pre-modification balance due to the advancement of monies for items such as delinquent taxes on real estate property. The loans 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.

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No loans restructured during the twelve-month periods ended March 31, 2018 and 2017 subsequently defaulted, resulting in a principal charge-off during the first quarters of 2018 and 2017.

The following table sets forth United’s age analysis of its past due loans, segregated by class of loans:

Age Analysis of Past Due Loans

As of March 31, 2018

	30-89 Days Past Due		90 Days or more  Past Due		Total Past Due		Current & Other (1)		Total Financing Receivables		Recorded Investment >90 Days & Accruing
Commercial real estate:
Owner-occupied	$	13,303	$	18,862	$	32,165	$	1,334,815	$	1,366,980	$	847
Nonowner-occupied		7,248		19,294		26,542		4,400,234		4,426,776		139
Other commercial		35,269		59,412		94,681		1,857,641		1,952,322		962
Residential real estate		30,344		25,641		55,985		3,010,005		3,065,990		6,027
Construction & land development		3,138		18,403		21,541		1,411,584		1,433,125		152
Consumer:
Bankcard		185		121		306		9,066		9,372		121
Other consumer		6,417		1,196		7,613		736,257		743,870		917
Total	$	95,904	$	142,929	$	238,833	$	12,759,602	$	12,998,435	$	9,165

(1) Other includes loans with a recorded investment of $189,675 acquired and accounted for under ASC topic 310-30 “Loans and Debt Securities Acquired with Deteriorated Credit Quality”.

Age Analysis of Past Due Loans

As of December 31, 2017

	30-89 Days Past Due		90 Days or more  Past Due		Total Past Due		Current & Other (1)		Total Financing Receivables		Recorded Investment >90  Days & Accruing
Commercial real estate:
Owner-occupied	$	7,968	$	13,663	$	21,631	$	1,339,998	$	1,361,629	$	458
Nonowner-occupied		10,398		20,448		30,846		4,420,452		4,451,298		634
Other commercial		11,533		68,476		80,009		1,918,970		1,998,979		940
Residential real estate		35,300		28,637		63,937		2,932,234		2,996,171		6,519
Construction & land development		1,615		17,190		18,805		1,486,102		1,504,907		385
Consumer:
Bankcard		449		186		635		9,679		10,314		186
Other consumer		9,288		968		10,256		693,783		704,039		775
Total	$	76,551	$	149,568	$	226,119	$	12,801,218	$	13,027,337	$	9,897

(1) Other includes loans with a recorded investment of $210,521 acquired and accounted for under ASC topic 310-30 “Loans and Debt Securities Acquired with Deteriorated Credit Quality”.

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The following table sets forth United’s nonaccrual loans, segregated by class of loans:

Loans on Nonaccrual Status

	March  31, 2018		December 31, 2017
Commercial real estate:
Owner-occupied	$	18,015	$	13,205
Nonowner-occupied		19,155		19,814
Other commercial		58,450		67,536
Residential real estate		19,614		22,118
Construction & land development		18,251		16,805
Consumer:
Bankcard		0		0
Other consumer		279		193
Total	$	133,764	$	139,671

United assigns credit quality indicators of pass, special mention, substandard and doubtful to its loans. For United’s loans with a corporate credit exposure, United internally assigns a grade based on the creditworthiness of the borrower. For loans with a consumer credit exposure, United internally assigns a grade based upon an individual loan’s delinquency status. United reviews and updates, as necessary, these grades on a quarterly basis.

Special mention loans, with a corporate credit exposure, have potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loans or in the Company’s credit position at some future date. Borrowers may be experiencing adverse operating trends (declining revenues or margins) or an ill proportioned balance sheet (e.g., increasing inventory without an increase in sales, high leverage, tight liquidity). Adverse economic or market conditions, such as interest rate increases or the entry of a new competitor, may also support a special mention rating. Nonfinancial reasons for rating a credit exposure special mention include management problems, pending litigation, an ineffective loan agreement or other material structural weakness, and any other significant deviation from prudent lending practices. For loans with a consumer credit exposure, loans that are past due 30-89 days are generally considered special mention.

A substandard loan with a corporate credit exposure is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness, or weaknesses, that jeopardize the liquidation of the debt by the borrower. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. They require more intensive supervision by management. Substandard loans are generally characterized by current or expected unprofitable operations, inadequate debt service coverage, inadequate liquidity, or marginal capitalization. Repayment may depend on collateral or other credit risk mitigants. For some substandard loans, the likelihood of full collection of interest and principal may be in doubt and thus, placed on nonaccrual. For loans with a consumer credit exposure, loans that are 90 days or more past due or that have been placed on nonaccrual are considered substandard.

A loan with corporate credit exposure is classified as doubtful if it has all the weaknesses inherent in one classified as substandard with the added characteristic that the weaknesses make collection in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. 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 prior to such a classification. Loans classified as doubtful are also considered impaired.

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The following tables set forth United’s credit quality indicators information, by class of loans:

Credit Quality Indicators

Corporate Credit Exposure

As of March 31, 2018
	Commercial Real Estate				Other Commercial		Construction & Land Development
	Owner- occupied		Nonowner- occupied
Grade:
Pass	$	1,291,287	$	4,250,743	$	1,820,513	$	1,349,638
Special mention		14,448		72,997		51,165		3,779
Substandard		61,245		103,036		77,848		79,708
Doubtful		0		0		2,796		0
Total	$	1,366,980	$	4,426,776	$	1,952,322	$	1,433,125
As of December 31, 2017
	Commercial Real Estate				Other Commercial		Construction &  Land Development
	Owner- occupied		Nonowner- occupied
Grade:
Pass	$	1,276,088	$	4,312,985	$	1,848,868	$	1,413,706
Special mention		20,165		57,618		55,564		5,196
Substandard		65,376		80,695		90,625		86,005
Doubtful		0		0		3,922		0
Total	$	1,361,629	$	4,451,298	$	1,998,979	$	1,504,907

Credit Quality Indicators

Consumer Credit Exposure

As of March 31, 2018
	Residential Real Estate		Bankcard		Other Consumer
Grade:
Pass	$	3,011,824	$	9,066	$	736,184
Special mention		20,738		185		6,460
Substandard		33,428		121		1,226
Doubtful		0		0		0
Total	$	3,065,990	$	9,372	$	743,870
As of December 31, 2017
	Residential Real Estate		Bankcard		Other Consumer
Grade:
Pass	$	2,945,266	$	9,679	$	693,727
Special mention		18,025		449		9,334
Substandard		32,880		186		978
Doubtful		0		0		0
Total	$	2,996,171	$	10,314	$	704,039

Loans are designated as impaired when, in the opinion of management, based on current information and events, the collection of principal and interest in accordance with the loan contract is doubtful. Typically, United does not consider loans for impairment unless a sustained period of delinquency (i.e. 90 days or more) is noted or there are subsequent events that impact repayment probability (i.e. negative financial trends, bankruptcy filings, eminent

27

foreclosure proceedings, etc.). Impairment is evaluated in total for smaller-balance loans of a similar nature and on an individual loan basis for other loans. Consistent with United’s existing method of income recognition for loans, interest on impaired loans, except those classified as nonaccrual, is recognized as income using the accrual method. Impaired loans, or portions thereof, are charged off when deemed uncollectible.

The following table sets forth United’s impaired loans information, by class of loans:

	Impaired Loans
	March 31, 2018						December 31, 2017
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	75,776	$	75,941	$	0	$	78,117	$	78,419	$	0
Nonowner-occupied		117,589		117,648		0		134,136		134,195		0
Other commercial		52,394		54,953		0		46,993		49,552		0
Residential real estate		24,125		24,787		0		26,751		28,202		0
Construction & land development		48,320		53,084		0		52,279		59,691		0
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		42		42		0		15		15		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	5,873	$	5,873	$	1,075	$	9,132	$	9,132	$	2,251
Nonowner-occupied		8,543		8,543		1,471		7,797		7,797		1,592
Other commercial		48,082		55,905		16,180		60,512		70,396		16,721
Residential real estate		11,887		13,438		1,742		9,813		10,418		1,552
Construction & land development		2,015		4,664		217		1,383		1,383		229
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		0		0		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	81,649	$	81,814	$	1,075	$	87,249	$	87,551	$	2,251
Nonowner-occupied		126,132		126,191		1,471		141,933		141,992		1,592
Other commercial		100,476		110,858		16,180		107,505		119,948		16,721
Residential real estate		36,012		38,225		1,742		36,564		38,620		1,552
Construction & land development		50,335		57,748		217		53,662		61,074		229
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		42		42		0		15		15		0

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	Impaired Loans
	For the Three Months Ended
	March 31, 2018				March 31, 2017
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	76,947	$	377	$	55,857	$	421
Nonowner-occupied		125,863		120		82,528		117
Other commercial		49,693		206		49,286		220
Residential real estate		25,437		83		21,814		41
Construction & land development		50,300		103		35,949		76
Consumer:
Bankcard		0		0		0		0
Other consumer		28		0		36		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	7,502	$	25	$	7,663	$	137
Nonowner-occupied		8,170		59		16,096		83
Other commercial		54,297		19		58,824		370
Residential real estate		10,850		0		13,113		8
Construction & land development		1,699		20		4,161		21
Consumer:
Bankcard		0		0		0		0
Other consumer		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	84,449	$	402	$	63,520	$	558
Nonowner-occupied		134,033		179		98,624		200
Other commercial		103,990		225		108,110		590
Residential real estate		36,287		83		34,927		49
Construction & land development		51,999		123		40,110		97
Consumer:
Bankcard		0		0		0		0
Other consumer		28		0		36		0

At March 31, 2018 and December 31, 2017, other real estate owned (“OREO”)  included in other assets in the Consolidated Balance Sheets was $22,778 and $24,348, 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, 2018 and December 31, 2017, the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process was $377 and $873, respectively.

6. ALLOWANCE FOR CREDIT LOSSES

The allowance for loan losses is management’s estimate of the probable credit losses inherent in the loan portfolio. For purposes of determining the general allowance, the loan portfolio is segregated by product type to recognize differing risk profiles among categories. It is further segregated by credit grade for non-homogenous loan pools and delinquency for homogeneous loan pools. The outstanding principal balance within each pool is multiplied by historical loss data, the loss emergence period (which is the period of time between the event that triggers a loss and the confirmation and/or charge off of that loss) and certain qualitative factors to derive the general loss allocation per pool. Specific loss allocations are calculated for commercial loans in excess of $500,000 in accordance with ASC topic 310. Risk characteristics of owner-occupied commercial real estate loans and other commercial loans are similar in that they are normally dependent upon the borrower’s internal cash flow from operations to service debt.

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Nonowner-occupied commercial real estate 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 deemed to be uncollectible are charged against the allowance for loan losses, while recoveries of previously charged-off amounts are credited to the allowance for loan losses. For commercial loans, when a loan or a portion of a loan is identified to contain a loss, a charge-off recommendation is directed to management to charge-off all or a portion of that loan. Generally, any unsecured commercial loan more than six months delinquent in payment of interest must be charged-off in full. If secured, the charge-off is generally made to reduce the loan balance to a level equal to the liquidation value of the collateral when payment of principal and interest is six months delinquent. Any commercial loan, secured or unsecured, on which a principal or interest payment has not been made within 90 days, is reviewed monthly for appropriate action.

For consumer loans, closed-end retail loans that are past due 120 cumulative days delinquent from the contractual due date and open-end loans 180 cumulative days delinquent from the contractual due date are charged-off. Any consumer loan on which a principal or interest payment has not been made within 90 days is reviewed monthly for appropriate action. For a one-to-four family open-end or closed-end residential real estate loan, home equity loan, or high-loan-to-value loan that has reached 180 or more days past due, management evaluates the collateral position and charges-off any amount that exceeds the value of the collateral. On retail credits for which the borrower is in bankruptcy, all amounts deemed unrecoverable are charged off within 60 days of the receipt of the notification. On retail credits effected by fraud, a loan is charged-off within 90 days of the discovery of the fraud. In the event of the borrower’s death and if repayment within the required timeframe is uncertain, the loan is generally charged-off as soon as the amount of the loss is determined.

For loans acquired through the completion of a transfer, including loans acquired in a business combination, that have evidence of deterioration of credit quality since origination and for which it is probable, at acquisition, that United will be unable to collect all contractually required payments receivable are initially recorded at fair value (as determined by the present value of expected future cash flows) with no valuation allowance. The difference between the undiscounted cash flows expected at acquisition and the investment in the loan, or the “accretable yield,” is recognized as interest income on a level-yield method over the life of the loan. Contractually required payments for interest and principal that exceed the undiscounted cash flows expected at acquisition, or the “nonaccretable difference,” are not recognized as a yield adjustment or as a loss accrual or a valuation allowance. Increases in expected cash flows subsequent to the initial investment are recognized prospectively through adjustment of the yield on the loan over its remaining life. Decreases in expected cash flows are recognized as impairment. Valuation allowances on these impaired loans reflect only losses incurred after the acquisition (meaning the present value of all cash flows expected at acquisition that ultimately are not to be received). For the three months ended March 31, 2018 and 2017, the re-estimation of the expected cash flows related to loans acquired that have evidence of deterioration of credit quality resulted in provision for loan losses expense of $1,279 and $367, respectively.

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 $755 and $679 at March 31, 2018 and December 31, 2017, 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 are referred to as the allowance for credit losses.

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A progression of the allowance for loan losses, by portfolio segment, for the periods indicated is summarized as follows:

Allowance for Loan Losses and Carrying Amount of Loans

For the Three Months Ended March 31, 2018

	Commercial Real Estate									Construction					Allowance for
	Owner- occupied			Nonowner- occupied		Other Commercial		Residential Real Estate		& Land Development			Consumer		Estimated Imprecision		Total
Allowance for Loan Losses:
Beginning balance	$	5,401		$	6,369	$	45,189	$	9,927	$	7,187		$	2,481	$	73	$	76,627
Charge-offs		1,015			0		2,868		910		460			605		0		5,858
Recoveries		55			136		106		264		2			143		0		706
Provision		(722	)		269		4,490		972		(300	)		372		97		5,178
Ending balance	$	3,719		$	6,774	$	46,917	$	10,253	$	6,429		$	2,391	$	170	$	76,653
Ending Balance: individually evaluated for impairment	$	1,075		$	1,471	$	16,180	$	1,742	$	217		$	0	$	0	$	20,685
Ending Balance: collectively evaluated for impairment	$	2,644		$	5,303	$	30,737	$	8,511	$	6,212		$	2,391	$	170	$	55,968
Ending Balance: loans acquired with deteriorated credit quality	$	0		$	0	$	0	$	0	$	0		$	0	$	0	$	0
Financing receivables:
Ending balance	$	1,366,980		$	4,426,776	$	1,952,322	$	3,065,990	$	1,433,125		$	753,242	$	0	$	12,998,435
Ending Balance: individually evaluated for impairment	$	33,438		$	22,868	$	71,478	$	13,856	$	16,909		$	0	$	0	$	158,549
Ending Balance: collectively evaluated for impairment	$	1,301,725		$	4,310,587	$	1,853,603	$	3,039,123	$	1,391,948		$	753,225	$	0	$	12,650,211
Ending Balance: loans acquired with deteriorated credit quality	$	31,817		$	93,321	$	27,241	$	13,011	$	24,268		$	17	$	0	$	189,675

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Allowance for Loan Losses and Carrying Amount of Loans

For the Year Ended December 31, 2017

	Commercial Real Estate											Construction					Allowance for
	Owner- occupied			Nonowner- occupied			Other Commercial		Residential Real  Estate			&  Land Development			Consumer		Estimated Imprecision			Total
Allowance for Loan Losses:
Beginning balance	$	5,273		$	6,883		$	33,087	$	13,770		$	10,606		$	2,805	$	347		$	72,771
Charge-offs		2,246			296			21,189		2,973			3,337			2,822		0			32,863
Recoveries		2,599			244			3,395		601			726			748		0			8,313
Provision		(225	)		(462	)		29,896		(1,471	)		(808	)		1,750		(274	)		28,406
Ending balance	$	5,401		$	6,369		$	45,189	$	9,927		$	7,187		$	2,481	$	73		$	76,627
Ending Balance: individually evaluated for impairment	$	2,251		$	1,592		$	16,721	$	1,552		$	229		$	0	$	0		$	22,345
Ending Balance: collectively evaluated for impairment	$	3,150		$	4,777		$	28,468	$	8,375		$	6,958		$	2,481	$	73		$	54,282
Ending Balance: loans acquired with deteriorated credit quality	$	0		$	0		$	0	$	0		$	0		$	0	$	0		$	0
Financing receivables:
Ending balance	$	1,361,629		$	4,451,298		$	1,998,979	$	2,996,171		$	1,504,907		$	714,353	$	0		$	13,027,337
Ending Balance: individually evaluated for impairment	$	36,721		$	21,851		$	78,715	$	14,316		$	16,921		$	0	$	0		$	168,524
Ending Balance: collectively evaluated for impairment	$	1,291,379		$	4,320,997		$	1,892,706	$	2,967,666		$	1,461,206		$	714,338	$	0		$	12,648,292
Ending Balance: loans acquired with deteriorated credit quality	$	33,529		$	108,450		$	27,558	$	14,189		$	26,780		$	15	$	0		$	210,521

7. INTANGIBLE ASSETS

The following is a summary of intangible assets subject to amortization and those not subject to amortization:

	March 31, 2018
	Community Banking					Mortgage Banking					Total
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Core deposit intangible assets	$	98,359	($	56,463	)	$	0	($	0	)	$	98,359	($	56,463	)
Non-amortized intangible assets:
George Mason trade name	$	0				$	1,080				$	1,080
Goodwill not subject to amortization	$	1,473,265				$	5,315				$	1,478,580

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	December 31, 2017
	Community Banking					Mortgage Banking				Total
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Core deposit intangible assets	$	98,359	($	54,453	)	$	0	$	0	$	98,359	($	54,453	)
Non-amortized intangible assets:
George Mason trade name	$	0				$	1,080			$	1,080
Goodwill not subject to amortization	$	1,473,265				$	5,115			$	1,478,380

The following table provides a reconciliation of goodwill:

	Community Banking		Mortgage Banking		Total
Goodwill at December 31, 2017	$	1,473,265	$	5,115	$	1,478,380
Preliminary addition to goodwill from Cardinal acquisition		0		200		200
Goodwill at March 31, 2018	$	1,473,265	$	5,315	$	1,478,580

United incurred amortization expense of $2,010 and $1,048 for the quarters ended March 31, 2018 and 2017, respectively.

The following table sets forth the anticipated amortization expense for intangible assets for the years subsequent to 2017:

Year	Amount
2018	$	8,039
2019		7,016
2020		6,309
2021		5,369
2022 and thereafter		17,173

8. SHORT-TERM BORROWINGS

Federal funds purchased and securities sold under agreements to repurchase are a significant source of funds for the Company. United has various unused lines of credit available from certain of its correspondent banks in the aggregate

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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. At March 31, 2018, federal funds purchased were $17,615 while total securities sold under agreements to repurchase (REPOs) were $250,771. Included in the $250,771 of total REPOs is a wholesale REPOs of $50,000, assumed in the Virginia Commerce merger. This wholesale REPO is scheduled to mature in May of 2018. 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 $20,000 line of credit with an unrelated financial institution to provide for general liquidity needs. The line is an unsecured, revolving line of credit. The line will be renewable on a 360-day basis and will carry an indexed, floating-rate of interest. The line requires compliance with various financial and nonfinancial covenants. At March 31, 2018, United had no outstanding balance under this line of credit.

9. 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, 2018, United had an unused borrowing amount of approximately $4,213,640 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, 2018, $1,060,948 of FHLB advances with a weighted-average interest rate of 1.84% are scheduled to mature within the next seven years.

The scheduled maturities of these FHLB borrowings are as follows:

Year	Amount
2018	$	746,863
2019		187,516
2020		42,013
2021		52,693
2022 and thereafter		31,863
Total	$	1,060,948

At March 31, 2018, United had a total of fourteen statutory business trusts that were formed for the purpose of issuing or participating in pools of trust preferred capital securities (“Capital Securities”) with the proceeds invested in junior subordinated debt securities (“Debentures”) of United. The Debentures, which are subordinate and junior in right of payment to all present and future senior indebtedness and certain other financial obligations of United, are the sole assets of the trusts and United’s payment under the Debentures is the sole source of revenue for the trusts. At March 31, 2018 and December 31, 2017, the outstanding balance of the Debentures was $233,961 and $242,446, respectively, and was included in the category of long-term debt on the Consolidated Balance Sheets entitled “Other long-term borrowings.” The Capital Securities are not included as a component of shareholders’ equity in the Consolidated Balance Sheets. United fully and unconditionally guarantees each individual trust’s obligations under the Capital Securities.

Under the provisions of the subordinated debt, United has the right to defer payment of interest on the subordinated debt at any time, or from time to time, for periods not exceeding five years. If interest payments on the subordinated debt are deferred, the dividends on the Capital Securities are also deferred. Interest on the subordinated debt is cumulative.

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For reporting periods prior to June 30, 2017, the Trust Preferred Securities qualified as Tier 1 regulatory capital under the “Basel III Capital Rules” as published by United’s primary federal regulator, the Federal Reserve, in July of 2013. The “Basel III Capital Rules” established a new comprehensive capital framework for U.S. banking organizations. Because United was less than $15 billion in total consolidated assets, the Basel III Capital Rules grandfathered United’s Trust Preferred Securities as Tier 1 capital under the limitations for restricted capital elements in the general risk-based capital rules. As a result, beginning in 2015 (the adoption date), United’s Trust Preferred Securities was subject to a limit of 25 percent of Tier 1 capital elements excluding any non-qualifying capital instruments and after all regulatory capital deductions and adjustments applied to Tier 1 capital, which is substantially similar to the limit in the general risk-based capital rules. Trust preferred securities no longer included in United’s Tier 1 capital could be included as a component of Tier 2 capital on a permanent basis without phase-out.

10. COMMITMENTS AND CONTINGENT LIABILITIES

United is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers and to alter its own exposure to fluctuations in interest rates. These financial instruments include loan commitments, standby letters of credit, and interest rate swap agreements. The instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the financial statements.

United’s maximum exposure to credit loss in the event of nonperformance by the counterparty to the financial instrument for the loan commitments and standby letters of credit is the contractual or notional amount of those instruments. United uses the same policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Collateral may be obtained, if deemed necessary, based on management’s credit evaluation of the counterparty.

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the commitment contract. Commitments generally have fixed expiration dates or other termination clauses and may require the payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily, and historically do not, represent future cash requirements. The amount of collateral obtained, if deemed necessary upon the extension of credit, is based on management’s credit evaluation of the counterparty. United had approximately $4,001,212 and $4,224,719 of loan commitments outstanding as of March 31, 2018 and December 31, 2017, respectively, the majority of which contractually expire within one year. Included in the March 31, 2018 amount are commitments to extend credit of $400,836 related to George Mason’s mortgage loan funding commitments and 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, 2018 and December 31, 2017, United had no outstanding commercial letters of credit. 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 $142,532 and $147,017 as of March 31, 2018 and December 31, 2017, 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.

George Mason 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. George Mason has a reserve of $516 as of March 31, 2018.

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United has derivative counter-party risk that may arise from the possible inability of George Mason’s third party investors to meet the terms of their forward sales contracts. George Mason 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.

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.

11. 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.

United accounts for its derivative financial instruments in accordance with the Derivatives and Hedging topic of the FASB Accounting Standards Codification (ASC topic 815). The Derivatives and Hedging topic require all derivative instruments to be carried at fair value on the balance sheet. United has designated certain derivative instruments used to manage interest rate risk as hedge relationships with certain assets, liabilities or cash flows being hedged. Certain derivatives used for interest rate risk management are not designated in a hedge relationship.

Derivative instruments designated in a hedge relationship to mitigate exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivative instruments designated in a hedge relationship to mitigate exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges.

For a fair value hedge, the fair value of the interest rate swap is recognized on the balance sheet as either a freestanding asset or liability with a corresponding adjustment to the hedged financial instrument. Subsequent adjustments due to changes in the fair value of a derivative that qualifies as a fair value hedge are offset in current period earnings. 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 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 other comprehensive income, net of tax. The portion of a hedge that is ineffective is recognized immediately in earnings.

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. The portion of a hedge that is ineffective is recognized immediately in earnings.

United through George Mason 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

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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 sells mortgage loans on either a best efforts or mandatory delivery basis. For loans sold on a mandatory delivery basis, United enters into forward mortgage-backed securities (the “residual hedge”) to mitigate the effect of interest rate risk. Both the rate lock commitment under mandatory delivery and the residual hedge are recorded at fair value through earnings and are not designated as accounting hedges. At the closing of the loan, the loan commitment derivative expires and United records a loan held for sale at fair value and continues to mark these assets to market under the election of fair value option. United closes out of the trading mortgage-backed securities assigned within the residual hedge and replaces the securities with a forward sales contract once a price has been accepted by an investor and recorded at fair value. For those loans selected to be sold under best efforts delivery, at the closing of the loan, the rate lock commitment derivative expires and the Company records a loan held for sale at fair value under the election of fair value option and continues to be obligated under the same forward loan sales contract entered into at inception of the rate lock commitment.

The derivative portfolio also includes derivative financial instruments not included in hedge relationships. These derivatives consist of interest rate swaps used for interest rate management purposes and derivatives executed with commercial banking customers to facilitate their interest rate management strategies. For derivatives that are not designated in a hedge relationship, changes in the fair value of the derivatives are recognized in earnings in the same period as the change in fair value. Gains and losses on other derivative financial instruments are included in noninterest income and noninterest expense, respectively.

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, 2018 and December 31, 2017.

	Asset Derivatives
	March 31, 2018						December 31, 2017
	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	$	88,679	$	2,514		Other assets	$	71,831	$	538
Total derivatives designated as hedging instruments			$	88,679	$	2,514			$	71,831	$	538
Derivatives not designated as hedging instruments
Forward loan sales commitments		Other assets	$	15,712	$	73		Other assets	$	31,024	$	2
Interest rate lock commitments		Other assets		195,330		5,610		Other assets		148,866		4,559
Total derivatives not designated as hedging instruments			$	211,042	$	5,683			$	179,890	$	4,561
Total asset derivatives			$	299,721	$	8,197			$	251,721	$	5,099

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	Liability Derivatives
	March 31, 2018						December 31, 2017
	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	$	0	$	0	Other liabilities	$	18,795	$	165
Total derivatives designated as hedging instruments			$	0	$	0		$	18,795	$	165
Derivatives not designated as hedging instruments
TBA mortgage-backed securities		Other liabilities	$	258,000	$	762	Other liabilities	$	236,500	$	312
Interest rate lock commitments		Other liabilities		0		0	Other liabilities		0		0
Total derivatives not designated as hedging instruments			$	258,000	$	762		$	236,500	$	312
Total liability derivatives			$	258,000	$	762		$	255,295	$	477

Derivative contracts involve the risk of dealing with both bank customers and institutional derivative counterparties and their ability to meet contractual terms. Credit risk arises from the possible inability of counterparties to meet the terms of their contracts. United’s exposure is limited to the replacement value of the contracts rather than the notional amount of the contract. The Company’s agreements generally contain provisions that limit the unsecured exposure up to an agreed upon threshold. Additionally, the Company attempts to minimize credit risk through certain approval processes established by management.

The effect of United’s derivative financial instruments on its unaudited Consolidated Statements of Income for the three months ended March 31, 2018 and 2017 are presented as follows:

			Three Months Ended
	Income  Statement Location		March 31, 2018			March 31, 2017
Derivatives in hedging relationships Fair Value Hedges:
Interest rate swap contracts		Interest income/(expense)	$	(42	)	$	(158	)
Total derivatives in hedging relationships			$	(42	)	$	(158	)
Derivatives not designated as hedging instruments
Forward loan sales commitments		Income from Mortgage Banking Activities	$	73		$	0
TBA mortgage-backed securities		Income from Mortgage Banking Activities		(450	)		0
Interest rate lock commitments		Income from Mortgage Banking Activities		(1,269	)		0
Total derivatives not designated as hedging instruments			$	(1,646	)	$	0
Total derivatives			$	(1,688	)	$	(158	)

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12. FAIR VALUE MEASUREMENTS

United determines the fair values of its financial instruments based on the fair value hierarchy established by 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.

The Fair Value Measurements and Disclosures topic 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 prices, inputs and 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: Securities available for sale and equity securities are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted market prices, when available (Level 1). If quoted market prices are not available, fair values are measured utilizing independent valuation techniques of identical or similar securities for which significant assumptions are derived primarily from or corroborated by observable market data. Using a market approach valuation methodology, third party vendors compile prices from various sources and may determine the fair value of identical or similar securities by using pricing models that considers observable market data (Level 2). Management internally reviews the fair values provided by third party vendors on a monthly basis. Management’s review consists of comparing fair values assigned by third party vendors to trades and offerings observed by management. The review requires some degree of judgment as to the number or percentage of securities to review on the part of management which could fluctuate based on results of past reviews and in comparison to current expectations. Exceptions that are deemed to be material are reviewed by management. Additionally, to 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.

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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, 2018, management determined that the prices provided by its third party pricing source 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 by management at March 31, 2018. 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 spread, a considerable decline in the volume and level of trading activity in the instrument, a significant variance in prices among market participants, and a significant reduction in the level of observable inputs. Any securities available for sale not valued based upon quoted market prices or third party pricing models that consider observable market data are considered Level 3. Currently, United considers its valuation of available-for-sale Trup Cdos as Level 3. The Fair Value Measurements and Disclosures topic assumes that fair values of financial assets are determined in an orderly transaction and not a forced liquidation or distressed sale at the measurement date. Based on financial market conditions, United feels that the fair values obtained from its third party vendor reflect forced liquidation or distressed sales for these Trup Cdos due to decreased volume and trading activity. Additionally, management held discussions with institutional traders to identify trends in the number and type of transactions related to the Trup Cdos sector. Based upon management’s review of the market conditions for Trup Cdos, it was determined that an income approach valuation technique (present value technique) that maximizes the use of relevant observable inputs and minimizes the use of unobservable inputs is more representative of fair value than the valuation technique used by United’s third party vendor. The present value technique discounts expected future cash flows of a security to arrive at a present value. Management considers the following items when calculating the appropriate discount rate: the implied rate of return when the market was last active, changes in the implied rate of return as markets moved from very active to inactive, recent changes in credit ratings, and recent activity showing that the market has built in increased liquidity and credit premiums. Management’s internal credit review of each security was also factored in to determine the appropriate discount rate. The credit review considered each security’s collateral, subordination, excess spread, priority of claims, principal and interest

Loans held for sale: For residential mortgage loans sold in the mortgage banking segment, the loans closed are recorded at fair value using the fair value option which is measured using valuations from investors for loans with similar characteristics adjusted for the Company’s actual sales experience versus the investor’s indicated pricing. These valuations fall into the Level 3 category. The unobservable input is the Company’s historical sales prices. The range of historical sales prices increased the investor’s indicated pricing by a range of 0.19% to 0.68% with a weighted average increase of 0.36%.

Derivatives: United utilizes interest rate swaps to hedge exposure to interest rate risk and variability of cash flows associated to changes in the underlying interest rate of the hedged item. These hedging interest rate swaps are classified as either a fair value hedge or a cash flow hedge. United’s derivative portfolio also includes derivative financial instruments not included in hedge relationships. These derivatives consist of interest rate swaps used for interest rate management purposes and derivatives executed with commercial banking customers to facilitate their interest rate management strategies. United utilizes third-party vendors for derivative valuation purposes. These vendors determine the appropriate fair value based on a net present value calculation of the cash flows related to the interest rate swaps using primarily observable market inputs such as interest rate yield curves (Level 2). Valuation adjustments to derivative fair values for liquidity and credit risk are also taken into consideration, as well as the likelihood of default by United and derivative counterparties, the net counterparty exposure and the remaining maturities of the positions. Values obtained from third party vendors are typically not adjusted by management. Management internally reviews the derivative values provided by third party vendors on a quarterly basis. All derivative values are tested for reasonableness by management utilizing a net present value calculation.

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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 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 other comprehensive income, net of tax. The portion of a hedge that is ineffective is recognized immediately in 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, George Mason enters into contractual interest rate lock commitments to extend credit to borrowers with fixed expiration dates. The commitments become effective when the borrowers “lock-in” a specified interest rate within the timeframes established by the mortgage companies. All borrowers are evaluated for credit 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, George Mason enters into either a forward sales contract to sell loans to investors when using best efforts or a TBA mortgage-backed security under mandatory delivery. As TBA mortgage-backed securities are actively traded in an open market, TBA mortgage-backed securities fall into a Level 1 category. 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 adjusted for the Company’s actual sales experience versus the investor’s indicated pricing. These valuations fall into the Level 3 category. The unobservable input is the Company’s historical sales prices. The range of historical sales prices increased the investor’s indicated pricing by a range of 0.19% to 0.68% with a weighted average increase of 0.36%.

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, 2018 and December 31, 2017, segregated by the level of the valuation inputs within the fair value hierarchy.

			Fair Value at March 31, 2018 Using
Description	Balance as of March  31, 2018		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 securities:
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	163,106	$	0	$	163,106	$	0
State and political subdivisions		293,712		0		293,712		0
Residential mortgage-backed securities

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			Fair Value at March 31, 2018 Using
Description	Balance as of March  31, 2018		Quoted Prices in  Active Markets  for Identical Assets (Level  1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Agency		915,547		0		915,547		0
Non-agency		5,166		0		5,166		0
Commercial mortgage-backed securities
Agency		476,779		0		476,779		0
Asset-backed securities		146,584		0		146,584		0
Trust preferred collateralized debt obligations		8,064		0		0		8,064
Single issue trust preferred securities		13,146		0		13,146		0
Other corporate securities		63,007		7,036		55,971		0
Total available for sale securities		2,085,111		7,036		2,070,011		8,064
Equity securities:
Financial services industry		485		485		0		0
Equity mutual funds (1)		6,007		6,007		0		0
Other equity securities		4,668		4,668		0		0
Total equity securities		11,160		11,160		0		0
Loans held for sale		192,673		0		0		192,673
Derivative financial assets:
Interest rate swap contracts		2,514		0		2,514		0
Forward sales commitments		73		0		73		0
Interest rate lock commitments		5,610		0		0		5,610
Total derivative financial assets		8,197		0		2,587		5,610
Liabilities
Derivative financial liabilities:
TBA mortgage-backed securities		762		0		762		0
Total derivative financial liabilities		762		0		762		0

(1) The equity mutual funds are within a rabbi trust for the payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries.

			Fair Value at December 31, 2017 Using
Description	Balance as of December  31, 2017		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	$	114,758	$	0	$	114,758	$	0
State and political subdivisions		303,869		0		303,869		0
Residential mortgage-backed securities
Agency		814,593		0		814,593		0
Non-agency		5,512		0		5,512		0
Commercial mortgage-backed securities
Agency		454,857		0		454,857		0
Asset-backed securities		109,970		0		109,970		0
Trust preferred collateralized debt obligations		34,269		0		0		34,269

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			Fair Value at December 31, 2017 Using
Description	Balance as of December  31, 2017		Quoted Prices in  Active Markets  for Identical Assets (Level  1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Single issue trust preferred securities		12,560		0		12,560		0
Other corporate securities		28,490		0		28,490		0
Total available for sale debt securities		1,878,878		0		1,844,609		34,269
Available for sale equity securities:
Financial services industry		3,545		331		3,214		0
Equity mutual funds (1)		6,332		6,332		0		0
Other equity securities		1		1		0		0
Total available for sale equity securities		9,878		6,664		3,214		0
Total available for sale securities		1,888,756		6,664		1,847,823		34,269
Loans held for sale		263,308		0		0		263,308
Derivative financial assets:
Interest rate swap contracts		538		0		538		0
Interest rate lock commitments		4,561		0		2		4,559
Total derivative financial assets		5,099		0		540		4,559
Liabilities
Derivative financial liabilities:
Interest rate swap contracts		165		0		165		0
TBA mortgage-backed securities		312		0		312		0
Total derivative financial liabilities		477		0		477		0

(1) The equity mutual funds are within a rabbi trust for the payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries.

There were no transfers between Level 1 and Level 2 for financial assets and liabilities measured at fair value on a recurring basis during the three months ended March 31, 2018 and the year ended December 31, 2017.

The following table presents additional information about financial assets and liabilities measured at fair value at March 31, 2018 and December 31, 2017 on a recurring basis and for which United has utilized Level 3 inputs to determine fair value:

	Available-for-sale Securities
	Trust preferred collateralized  debt obligations
	March 31, 2018			December 31, 2017
Balance, beginning of period	$	34,269		$	33,552
Total gains or losses (realized/unrealized):
Included in earnings (or changes in net assets)		28			9
Included in other comprehensive income		217			8,757
Purchases, issuances, and settlements		0			0
Sales		(26,450	)		(8,049	)
Transfers in and/or out of Level 3		0			0
Balance, end of period	$	8,064		$	34,269
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 relating to assets still held at reporting date	$	0		$	0

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	Loans held for sale
	March 31, 2018			December 31, 2017
Balance, beginning of period	$	263,308		$	0
Acquired in Cardinal merger		0			271,301
Originations		573,732			2,333,927
Sales		(631,834	)		(2,408,945	)
Total gains or losses during the period recognized in earnings		14,883			58,132
Transfers in and/or out of Level 3		(27,416	)		8,893
Balance, end of period	$	192,673		$	263,308
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 relating to assets still held at reporting date	$	0		$	0

	Derivative Financial  Assets Interest Rate Lock Commitments
	March 31, 2018		December 31, 2017
Balance, beginning of period	$	4,559	$	0
Acquired in Cardinal merger		0		10,393
Transfers other		1,051		(5,834	)
Balance, end of period	$	5,610	$	4,559
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 relating to assets still held at reporting date	$	0	$	0

Certain financial assets are measured at fair value on a nonrecurring basis in accordance with GAAP. Adjustments to the fair value of these assets usually result from the application of lower-of-cost-or-market accounting or write-downs of individual assets.

Fair Value Option

United elected the fair value option for the loans held for sale in its mortgage banking segment to mitigate a divergence between accounting losses and economic exposure.

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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, 2018			Three Months  Ended March 31, 2017
Assets
Loans held for sale
Income from mortgage banking activities	$	(1,719	)	$	0

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, 2018						December 31, 2017
Description	Unpaid Principal Balance		Fair Value		Fair Value Over/(Under) Unpaid Principal Balance		Unpaid Principal Balance		Fair Value		Fair Value Over/(Under) Unpaid Principal Balance
Assets
Loans held for sale	$	188,998	$	192,673	$	3,675	$	257,674	$	263,308	$	5,634

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

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: Loans held for sale within the community banking segment that are delivered on a best efforts basis are carried at the lower of cost or fair value. The fair value is based on the price secondary markets are currently offering for similar loans using observable market data which is not materially different than cost due to the short duration between 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 three months ended March 31, 2018. Gains and losses on sale of loans are recorded within income from mortgage banking activities on the Consolidated Statements of Income.

Impaired Loans: Loans are designated as impaired when, in the judgment of management based on current information and events, it is probable that all amounts due according to the contractual terms of the loan agreement will not be collected. Impairment is measured based upon the present value of expected future cash flows from the loan discounted at the loan’s effective rate and the loan’s observable market price or the fair value of collateral, if the loan is collateral dependent. Fair value is measured using a market approach based on the value of the collateral securing the loans. Collateral may be in the form of real estate or business assets including equipment, inventory, and accounts receivable. The vast majority of the collateral is real estate. The value of real estate collateral is determined utilizing an appraisal conducted by an independent, licensed appraiser outside of the Company using comparable property sales (Level 2). However, if the collateral is a house or building in the process of construction or if an appraisal of the real estate property is over two years old, then the fair value is considered Level 3. The value of business equipment is based upon an outside appraisal if deemed significant, or the net book value on the applicable business’ financial statements if not considered significant using observable market data. Likewise, values for inventory and accounts receivables collateral are based on financial statement balances or aging reports (Level 3). For impaired loans, a specific reserve is established through the Allowance for Loan Losses, if necessary, by estimating the fair value of the underlying collateral on a nonrecurring basis. Any fair value adjustments are recorded in the period incurred as provision for credit losses expense on the Consolidated Statements of Income.

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OREO: OREO consists of real estate acquired in foreclosure or other settlement of loans. Such assets are carried on the balance sheet at the lower of the investment in the assets or the fair value of the assets less estimated selling costs. Fair value is determined by one of two market approach methods depending on whether the property has been vacated and an appraisal can be conducted. If the property has yet to be vacated and thus an appraisal cannot be performed, a Brokers Price Opinion (i.e. BPO), is obtained. A BPO represents a best estimate valuation performed by a realtor based on knowledge of current property values and a visual examination of the exterior condition of the property. Once the property is subsequently vacated, a formal appraisal is obtained and the recorded asset value appropriately adjusted. On the other hand, if the OREO property has been vacated and an appraisal can be conducted, the fair value of the property is determined based upon the appraisal using a market approach. An authorized independent appraiser conducts appraisals for United. Appraisals for property other than ongoing construction are based on consideration of comparable property sales (Level 2). In contrast, valuation of ongoing construction assets requires some degree of professional judgment. In conducting an appraisal for ongoing construction property, the appraiser develops two appraised amounts: an “as is” appraised value and a “completed” value. Based on professional judgment and their knowledge of the particular situation, management determines the appropriate fair value to be utilized for such property (Level 3). As a matter of policy, valuations are reviewed at least annually and appraisals are generally updated on a bi-annual basis with values lowered as necessary.

Intangible Assets: For United, intangible assets consist of goodwill and core deposit intangibles. Goodwill is tested for impairment at least annually or sooner if indicators of impairment exist. Goodwill impairment would be defined as the difference between the recorded value of goodwill (i.e. book value) and the implied fair value of goodwill. In determining the implied fair value of goodwill for purposes of evaluating goodwill impairment, United determines the fair value of the reporting unit using a market approach and compares the fair value to its carrying value. If the carrying value exceeds the fair value, a step two test is performed whereby the implied fair value is computed by deducting the fair value of all tangible and intangible net assets from the fair value of the reporting unit. Core deposit intangibles relate to the estimated value of the deposit base of acquired institutions. Management reviews core deposit intangible assets on an annual basis, or sooner if indicators of impairment exist, and evaluates changes in facts and circumstances that may indicate impairment in the carrying value. No other fair value measurement of intangible assets was made during the first three months of 2018 and 2017.

The following table summarizes United’s financial assets that were measured at fair value on a nonrecurring basis during the period:

			Carrying value at March 31, 2018
Description	Balance as of March  31, 2018		Quoted Prices in  Active Markets  for Identical Assets (Level  1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		YTD Losses
Assets
Loans held for sale	$	1,242	$	0	$	1,242	$	0	$	0
Impaired Loans		76,400		0		56,632		19,768		1,376
OREO		22,778		0		22,702		76		585
			Carrying value at December 31, 2017
Description	Balance as of December 31, 2017		Quoted Prices in  Active Markets  for Identical Assets (Level  1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		YTD Losses
Assets
Loans held for sale	$	2,647	$	0	$	2,647	$	0	$	14
Impaired Loans		88,637		0		70,950		17,687		12,291
OREO		24,348		0		24,151		197		4,200

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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: The carrying amounts reported in the balance sheet for cash and cash equivalents approximate those assets’ fair values.

Securities held to maturity and other securities: The estimated fair values of securities held to maturity are based on quoted market prices, where available. If quoted market prices are not available, fair values are measured utilizing independent valuation techniques of identical or similar securities for which significant assumptions are derived primarily from or corroborated by observable market data. Third party vendors compile prices from various sources and may determine the fair value of identical or similar securities by using pricing models that considers 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: For March 31, 2018, fair values of loans are estimated on an exit price basis incorporating discounts for credit, liquidity and marketability factors. This is not comparable with the fair values disclosed for December 31, 2017, which were based on an entrance price basis. For that date, the fair values of certain mortgage loans (e.g., one-to-four family residential), credit card loans, and other consumer loans were based on quoted market prices of similar loans sold in conjunction with securitization transactions, adjusted for differences in loan characteristics. The fair values of other loans (e.g., commercial real estate and rental property mortgage loans, commercial and industrial loans, financial institution loans and agricultural loans) were estimated using discounted cash flow analyses, using market interest rates being offered at that time for loans with similar terms to borrowers of similar creditworthiness, which included adjustments for liquidity concerns. For acquired impaired loans, fair value was assumed to equal United’s carrying value, which represented the present value of expected future principal and interest cash flows, as adjusted for any Allowance for Loan Losses recorded for these loans.

Deposits: The fair values of demand deposits (e.g., interest and noninterest checking, regular savings and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). The carrying amounts of variable-rate, fixed-term money market accounts and certificates of deposit 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: The carrying amounts of federal funds purchased, borrowings under repurchase agreements and any other short-term borrowings approximate their fair values.

Long-term Borrowings: The fair values of United’s Federal Home Loan Bank borrowings and trust preferred securities are estimated using discounted cash flow analyses, based on United’s current incremental borrowing rates for similar types of borrowing arrangements.

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Summary of Fair Values for All Financial Instruments

The estimated fair values of United’s financial instruments, including those measured at amortized cost on the balance sheet, are summarized below:

					Fair Value Measurements
	Carrying Amount		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, 2018
Cash and cash equivalents	$	1,139,170	$	1,139,170	$	0	$	1,139,170	$	0
Securities available for sale		2,085,111		2,085,111		7,036		2,070,011		8,064
Securities held to maturity		20,405		20,006		0		16,986		3,020
Equity securities		11,160		11,160		11,160		0		0
Other securities		152,287		144,673		0		0		144,673
Loans held for sale		193,915		193,915		0		1,242		192,673
Loans		12,907,764		12,207,257		0		0		12,207,257
Derivative financial assets		8,197		8,197		0		2,587		5,610
Deposits		13,646,168		13,611,626		0		13,611,626		0
Short-term borrowings		218,386		218,386		0		218,386		0
Long-term borrowings		1,344,909		1,317,352		0		1,317,352		0
Derivative financial liabilities		762		762		0		762		0
December 31, 2017
Cash and cash equivalents	$	1,666,167	$	1,666,167	$	0	$	1,666,167	$	0
Securities available for sale		1,888,756		1,888,756		6,664		1,847,823		34,269
Securities held to maturity		20,428		20,018		0		16,998		3,020
Other securities		162,461		154,338		0		0		154,338
Loans held for sale		265,955		265,955		0		2,647		263,308
Loans		12,934,794		12,437,797		0		0		12,437,797
Derivative financial assets		5,099		5,099		0		540		4,559
Deposits		13,830,591		14,024,720		0		14,024,720		0
Short-term borrowings		477,587		477,587		0		477,587		0
Long-term borrowings		1,363,977		1,338,754		0		1,338,754		0
Derivative financial liabilities		477		477		0		477		0

13. STOCK BASED COMPENSATION

On May 18, 2016, United’s shareholders approved the 2016 Long-Term Incentive Plan (2016 LTI Plan). The 2016 LTI Plan became effective as of May 18, 2016. An award granted under the 2016 LTI Plan may consist of any non-qualified stock options or incentive stock options, stock appreciation rights (SARs), restricted stock, restricted stock units, performance units or other-stock-based award. These awards all relate to the common stock of United. The maximum number of shares of United common stock which may be issued under the 2016 LTI Plan is 1,700,000. The 2016 LTI Plan will be administered by a board committee appointed by United’s Board of Directors (the Board). Unless otherwise determined by the Board, the Compensation Committee of the Board (the Committee) shall administer the 2016 LTI Plan. Any and all shares may be issued in respect of any of the types of Awards, provided that (1) the aggregate number of shares that may be issued in respect of restricted stock awards, and restricted stock unit awards which are settled in shares is 500,000, and (2) the aggregate number of shares that may be issued pursuant to stock options is 1,200,000. The shares to be offered under the 2016 LTI Plan may be authorized and unissued shares or treasury shares. The maximum number of options and SARs, in the aggregate, which may be awarded to any

48

individual key employee during any calendar year is 100,000. The maximum number of stock options and SARs, in the aggregate, which may be awarded to any non-employee director during any calendar year is 10,000. The maximum number of shares of restricted stock or shares subject to a restricted stock units award that may be granted during any calendar year is 50,000 shares to any individual key employee and 5,000 shares to any individual non-employee director. Subject to certain change in control provisions, the 2016 LTI Plan provides that awards of restricted stock and restricted stock units will vest as the Committee determines in the award agreement, provided that no awards will vest sooner than 1/3 per year over the first three anniversaries of the award. Awards granted to executive officers of United typically will have performance based vesting conditions. A Form S-8 was filed on July 29, 2016 with the Securities and Exchange Commission to register all the shares which were available for the 2016 LTI Plan. During the first three months of 2018, a total of 276,192 non-qualified stock options and 97,004 shares of restricted stock were granted under the 2016 LTI Plan.

Compensation expense of $968 and $682 related to the nonvested awards under United’s Long-Term Incentive Plans was incurred for the first quarter of 2018 and 2017, 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 2016 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 31, 2018, and the changes during the first three months of 2018 are presented below:

	Three Months Ended March 31, 2018
						Weighted Average
	Shares			Aggregate Intrinsic Value		Remaining Contractual Term (Yrs.)		Exercise Price
Outstanding at January 1, 2018		1,558,438						$	31.09
Granted		276,192							37.60
Exercised		(15,043	)						19.97
Forfeited or expired		(2,438	)						39.16
Outstanding at March 31, 2018		1,817,149		$	9,046,231		6.3	$	32.16
Exercisable at March 31, 2018		1,222,889		$	9,027,432		4.9	$	28.57

The following table summarizes the status of United’s nonvested stock option awards during the first three months of 2018:

	Shares			Weighted-Average Grant Date Fair Value Per Share
Nonvested at January 1, 2018		507,871		$	7.89
Granted		276,192			7.56
Vested		(187,365	)		7.52
Forfeited or expired		(2,438	)		7.75
Nonvested at March 31, 2018		594,260		$	7.85

During the three months ended March 31, 2018 and 2017, 15,043 and 22,523 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, 2018 and 2017 were issued from authorized and unissued stock. The total intrinsic value of options exercised under the Plans during the three months ended March 31, 2018 and 2017 was $246 and $452 respectively.

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Restricted Stock

Under the 2011 LTI Plan, United may award restricted common shares to key employees and non-employee directors. Restricted shares granted to participants have a four-year time-based vesting period. Recipients of restricted shares do not pay any consideration to United for the shares, have the right to vote all shares subject to such grant and receive all dividends with respect to such shares, whether or not the shares have vested. Presently, these nonvested participating securities have an immaterial impact on diluted earnings per share.

The following summarizes the changes to United’s restricted common shares for the period ended March 31, 2018:

	Number of Shares			Weighted-Average Grant Date Fair Value Per Share
Outstanding at January 1, 2018		170,496		$	40.05
Granted		97,004			37.60
Vested		(62,285	)		37.59
Forfeited		(683	)		39.15
Outstanding at March 31, 2018		204,532		$	39.64

14. EMPLOYEE BENEFIT PLANS

United has a defined benefit retirement plan covering a majority of all employees. Pension benefits are based on years of service and the average of the employee’s highest five consecutive plan years of basic compensation paid during the ten plan years preceding the date of determination. Contributions are intended to provide not only for benefits attributed to service to date, but also for those expected to be earned in the future. During the first quarter of 2018, United made a discretionary contribution of $7,000 to the Plan.

In September of 2007, after a recommendation by United’s Pension Committee and approval by United’s Board of Directors, the United Bankshares, Inc. Pension Plan (the Plan) was amended to change the participation rules. The decision to change the participation rules for the Plan followed current industry trends, as many large and medium size companies had taken similar steps. The amendment provides that employees hired on or after October 1, 2007, will not be eligible to participate in the Plan. However, new employees will be eligible to participate in United’s Savings and Stock Investment 401(k) plan. This change had no impact on current employees hired prior to October 1, 2007 as they will continue to participate in the Plan, with no change in benefit provisions, and will continue to be eligible to participate in United’s Savings and Stock Investment 401(k) plan.

Included in accumulated other comprehensive income at December 31, 2017 are unrecognized actuarial losses of $56,222 ($35,420 net of tax) that have not yet been recognized in net periodic pension cost. The amortization of this item expected to be recognized in net periodic pension cost during the fiscal year ended December 31, 2018 is $4,653 ($2,932 net of tax).

Net periodic pension cost for the three months ended March 31, 2018 and 2017 included the following components:

	Three Months Ended March 31
	2018			2017
Service cost	$	658		$	562
Interest cost		1,295			1,265
Expected return on plan assets		(2,522	)		(2,027	)
Amortization of transition asset		0			0
Recognized net actuarial loss		1,149			1,087
Amortization of prior service cost		0			0
Net periodic pension (benefit) cost	$	580		$	887
Weighted-Average Assumptions:
Discount rate		3.83	%		4.49	%
Expected return on assets		7.00	%		7.00	%
Rate of compensation increase (prior to age 45)		3.50	%		3.50	%
Rate of compensation increase		3.00	%		3.00	%

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15. INCOME TAXES

United records a liability for uncertain income tax positions based on a recognition threshold of more-likely-than-not, and a measurement attribute for all tax positions taken on a tax return, in order for those tax positions to be recognized in the financial statements.

As of March 31, 2018 and 2017, the total amount of accrued interest related to uncertain tax positions was $695 and $589, 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, 2014, 2015 and 2016 and certain State Taxing authorities for the years ended December 31, 2014 through 2016.

On December 22, 2017, the Tax Cuts and Jobs Act (the “Tax Act”) was signed into law. The Tax Act lowered the Federal corporate tax rate from 35% to 21% effective January 1, 2018 and made numerous other tax law changes. U.S. generally accepted accounting principles (GAAP) requires companies to recognize the effect of tax law changes in the period of enactment. As a result of the Tax Act, United was required to remeasure deferred tax assets and liabilities at the new tax rate and as a result, recorded deferred tax expense of $37,732 in the fourth quarter of 2017. Reasonable estimates were made based on the Company’s analysis of the Tax Act. This provisional amount may be adjusted in future periods during 2018 when additional information is obtained as provided for under Staff Accounting Bulletin (“SAB 118”). Additional information that may affect our provisional amount would include further clarification and guidance on how the IRS will implement tax reform, further clarification and guidance on how state taxing authorities will implement tax reform and the related effect on the Company’s state income tax returns, completion of United’s 2017 tax return filings, and the potential for additional guidance from the SEC or the FASB related to the Tax Act. Management continues to evaluate other potential impacts of the Tax Act. The Company did not identify items for which the income tax effects of the Tax Act have not been completed and a reasonable estimate could not be determined as of March 31, 2018.

United’s effective tax rate was 22.48% for the first quarter of 2018 and 34.25% for the first quarter of 2017. The lower effective tax rate for the first quarter of 2018 was due mainly to the Tax Act.

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16. COMPREHENSIVE INCOME

The components of total comprehensive income for the three months ended March 31, 2018 and 2017 are as follows:

	Three Months Ended March 31
	2018			2017
Net Income	$	61,706		$	38,809
Available for sale (“AFS”) securities:
AFS securities with OTTI charges during the period		0			(44	)
Related income tax effect		0			16
Less : OTTI charges recognized in net income		0			44
Related income tax benefit		0			(16	)
Reclassification of previous noncredit OTTI to credit OTTI		0			0
Related income tax benefit		0			0
Net unrealized gain (loss) on AFS securities with OTTI		0			0
AFS securities – all other:
Change in net unrealized gain on AFS securities arising during the period		(22,017	)		5,576
Related income tax effect		5,130			(2,063	)
Net reclassification adjustment for losses (gains) included in net income		149			(214	)
Related income tax (benefit) expense		(35	)		79
		(16,773	)		3,378
Net effect of AFS securities on other comprehensive income		(16,773	)		3,378
Held to maturity (“HTM”) securities:
Accretion on the unrealized loss for securities transferred from AFS to the HTM investment portfolio prior to call or maturity		2			2
Related income tax expense		(1	)		(1	)
Net effect of HTM securities on other comprehensive income		1			1
Pension plan:
Recognized net actuarial loss		1,149			1,087
Related income tax benefit		(416	)		(392	)
Net effect of change in pension plan asset on other comprehensive income		733			695
Total change in other comprehensive income		(16,039	)		4,074
Total Comprehensive Income	$	45,667		$	42,883

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The components of accumulated other comprehensive income for the three months ended March 31, 2018 are as follows:

Changes in Accumulated Other Comprehensive Income (AOCI) by Component ^(a)

For the Three Months Ended March 31, 2018

	Unrealized Gains/Losses on AFS Securities			Accretion on the  unrealized loss for securities transferred from AFS to the HTM			Defined Benefit Pension Items			Total
Balance at January 1, 2018	($	6,204	)	($	46	)	($	35,775	)	($	42,025	)
Cumulative effect of adopting Accounting Standard Update 2016-01		(136	)								(136	)
Reclass due to adopting Accounting Standard Update 2018-02		(1,632	)					(4,721	)		(6,353	)
Other comprehensive income before reclassification		(16,887	)		1			0			(16,886	)
Amounts reclassified from accumulated other comprehensive income		114			0			733			847
Net current-period other comprehensive income, net of tax		(16,773	)		1			733			(16,039	)
Balance at March 31, 2018	($	24,745	)	($	45	)	($	39,763	)	($	64,553	)

(a) All amounts are net-of-tax.

Reclassifications out of Accumulated Other Comprehensive Income (AOCI)

For the Three Months Ended March 31, 2018

Details about AOCI Components	Amount Reclassified from AOCI			Affected Line Item in the Statement Where Net Income is Presented
Available for sale (“AFS”) securities:
Reclassification of previous noncredit OTTI to credit OTTI	$	0		Net investment securities (losses) gains
Net reclassification adjustment for losses (gains) included in net income		149		Net investment securities (losses) gains
		149		Total before tax
Related income tax effect		(35	)	Tax expense
		114		Net of tax
Pension plan:
Recognized net actuarial loss		1,149	(a)
		1,149		Total before tax
Related income tax effect		(416	)	Tax expense
		733		Net of tax
Total reclassifications for the period	$	847

(a) This AOCI component is included in the computation of net periodic pension cost (see Note 14, Employee Benefit Plans)

17. 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
	2018		2017
Distributed earnings allocated to common stock	$	35,679	$	26,722
Undistributed earnings allocated to common stock		25,919		12,014
Net earnings allocated to common shareholders	$	61,598	$	38,736

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	Three Months Ended
	March 31
	2018		2017
Average common shares outstanding		104,859,427		80,902,368
Common stock equivalents		303,431		404,172
Average diluted shares outstanding		105,162,858		81,306,540
Earnings per basic common share	$	0.59	$	0.48
Earnings per diluted common share	$	0.59	$	0.48

18. 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 fourteen statutory business trusts that were created for the purpose of raising funds that originally qualified for Tier I regulatory capital. As previously discussed, with the acquisition of Cardinal, 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 Capital Securities Issued		Interest Rate	Maturity Date
United Statutory Trust III	December 17, 2003	$	20,000	3-month LIBOR + 2.85%	December 17, 2033
United Statutory Trust IV	December 19, 2003	$	25,000	3-month LIBOR + 2.85%	January 23, 2034
United Statutory Trust V	July 12, 2007	$	50,000	3-month LIBOR + 1.55%	October 1, 2037
United Statutory Trust VI	September 20, 2007	$	30,000	3-month LIBOR + 1.30%	December 15, 2037
Premier Statutory Trust II	September 25, 2003	$	6,000	3-month LIBOR + 3.10%	October 8, 2033
Premier Statutory Trust III	May 16, 2005	$	8,000	3-month LIBOR + 1.74%	June 15, 2035
Premier Statutory Trust IV	June 20, 2006	$	14,000	3-month LIBOR + 1.55%	September 23, 2036
Premier Statutory Trust V	December 14, 2006	$	10,000	3-month LIBOR + 1.61%	March 1, 2037
Centra Statutory Trust I	September 20, 2004	$	10,000	3-month LIBOR + 2.29%	September 20, 2034
Centra Statutory Trust II	June 15, 2006	$	10,000	3-month LIBOR + 1.65%	July 7, 2036
Virginia Commerce Trust II	December 19, 2002	$	15,000	6-month LIBOR + 3.30%	December 19, 2032
Virginia Commerce Trust III	December 20, 2005	$	25,000	3-month LIBOR + 1.42%	February 23, 2036
Cardinal Statutory Trust I	July 27, 2004	$	20,000	3-month LIBOR + 2.40%	September 15, 2034
UFBC Capital Trust I	December 30, 2004	$	5,000	3-month LIBOR + 2.10%	March 15, 2035

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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, 2018						As of December 31, 2017
	Aggregate Assets		Aggregate Liabilities		Risk Of Loss (1)		Aggregate Assets		Aggregate Liabilities		Risk Of Loss (1)
Trust preferred securities	$	257,527	$	248,700	$	8,827	$	266,669	$	257,674	$	8,995

(1) Represents investment in VIEs.

19. SEGMENT INFORMATION

As a result of the Cardinal acquisition in April 2017, United now operates in two business segments: community banking and mortgage banking. Prior to the Cardinal acquisition, United’s business activities were confined to just one reportable segment of community 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 George Mason.

The community banking segment provides the mortgage banking segment (George Mason) with short-term funds to originate mortgage loans through a warehouse line of credit and charges the mortgage banking segment interest based on the prime rate. These transactions are eliminated in the consolidation process.

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.

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Information about the reportable segments and reconciliation of this information to the consolidated financial statements at and for the three months ended March 31, 2018 and 2017 is as follows:

	At and For the Three Months Ended March 31,  2018
	Community Banking		Mortgage Banking			Other			Consolidated
Net interest income	$	146,261	$	376		$	(2,594	)	$	144,043
Provision for loans losses		5,178		0			0			5,178
Other income		17,131		14,883			(822	)		31,192
Other expense		72,491		18,384			(423	)		90,452
Income taxes		19,276		(703	)		(674	)		17,899
Net income (loss)	$	66,447	$	(2,422	)	$	(2,319	)	$	61,706
Total assets (liabilities)	$	18,319,946	$	289,925		$	9,831		$	18,619,702
Average assets (liabilities)		18,318,613		210,172			15,012			18,543,797

	At and For the Three Months Ended March 31,  2017
	Community Banking		Other			Consolidated
Net interest income	$	109,660	$	(2,040	)	$	107,620
Provision for loans losses		5,899		0			5,899
Other income		16,813		3,333			20,146
Other expense		62,752		90			62,842
Income taxes		19,804		412			20,216
Net income (loss)	$	38,018	$	791		$	38,809
Total assets (liabilities)	$	14,779,983	$	(17,668	)	$	14,762,315
Average assets (liabilities)		14,433,409		(27,676	)		14,405,733

Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

FORWARD-LOOKING STATEMENTS

Congress passed the Private Securities Litigation Act of 1995 to encourage corporations to provide investors with information about the company’s anticipated future financial performance, goals, and strategies. The act provides a safe harbor for such disclosure, in other words, protection from unwarranted litigation if actual results are not the same as management expectations.

United desires to provide its shareholders with sound information about past performance and future trends. Consequently, any forward-looking statements contained in this report, in a report incorporated by reference to this report, or made by management of United in this report, in any other reports and filings, in press releases and in oral statements, involve numerous assumptions, risks and uncertainties. Actual results could differ materially from those contained in or implied by United’s statements for a variety of factors including, but not limited to: changes in economic conditions; business conditions in the banking industry; movements in interest rates; competitive pressures on product pricing and services; success and timing of business strategies; the nature and extent of governmental actions and reforms; and rapidly changing technology and evolving banking industry standards.

ACQUISITIONS

On April 21, 2017, United acquired 100% of the outstanding common stock of Cardinal Financial Corporation (“Cardinal”), headquartered in Tysons Corner, Virginia. The acquisition of Cardinal expands United’s existing footprint in the Washington, D.C. Metropolitan Statistical Area (“MSA”). Cardinal also operated George Mason Mortgage, LLC (“George Mason”), a residential mortgage lending company based in Fairfax, Virginia with offices

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located in Virginia, Maryland, North Carolina, South Carolina and the District of Columbia. As a result of the merger, George Mason became an indirectly-owned subsidiary of United. The Cardinal merger was accounted for under the acquisition method of accounting. At consummation, Cardinal had assets of $4.14 billion, portfolio loans of $3.31 billion and deposits of $3.34 billion.

The results of operations of Cardinal are included in the consolidated results of operations from their respective dates of acquisition. As a result of the Cardinal acquisition, the first quarter of 2018 was impacted by increased levels of average balances, income, and expense as compared to the first quarter of 2017. In addition, the first quarter of 2017 included $1.23 million of merger-related expenses from the Cardinal acquisition.

INTRODUCTION

The following discussion and analysis presents the significant changes in financial condition and the results of operations of United and its subsidiaries for the periods indicated below. This discussion and the unaudited consolidated financial statements and the notes to unaudited Consolidated Financial Statements include the accounts of United Bankshares, Inc. and its wholly-owned subsidiaries, unless otherwise indicated. Management has evaluated all significant events and transactions that occurred after March 31, 2018, but prior to the date these financial statements were issued, for potential recognition or disclosure required in these financial statements.

This discussion and analysis should be read in conjunction with the unaudited Consolidated Financial Statements and accompanying notes thereto, which are included elsewhere in this document.

USE OF NON-GAAP FINANCIAL MEASURES

This discussion and analysis contains a certain financial measure that is not recognized under GAAP. Under SEC Regulation G, public companies making disclosures containing financial measures that are not in accordance with GAAP must also disclose, along with each “non-GAAP” financial measure, certain additional information, including a reconciliation of the non-GAAP financial measure to the closest comparable GAAP financial measure, as well as a statement of the company’s reasons for utilizing the non-GAAP financial measure.

Generally, United has presented this non-GAAP financial measure because it believes that this measure provides meaningful additional information to assist in the evaluation of United’s results of operations or financial position. Presentation of this non-GAAP financial measure is consistent with how United’s management evaluates its performance internally and this non-GAAP financial measure is frequently used by securities analysts, investors and other interested parties in the evaluation of companies in the banking industry. Specifically, this discussion contains certain references to a financial measure identified as tax-equivalent net interest income. Management believes this non-GAAP financial measure, if significant, to be helpful in understanding United’s results of operations or financial position. However, this non-GAAP information should be considered supplemental in nature and not as a substitute for related financial information prepared in accordance with GAAP.

Where the non-GAAP financial measure is used, the comparable GAAP financial measure, as well as reconciliation to that comparable GAAP financial measure, as well as a statement of the company’s reasons for utilizing the non-GAAP financial measure, can be found within this discussion and analysis. Investors should recognize that United’s presentation of this non-GAAP financial measure might not be comparable to a similarly titled measure at other companies.

APPLICATION OF CRITICAL ACCOUNTING POLICIES

The accounting and reporting policies of United conform with U.S. generally accepted accounting principles. In preparing the consolidated financial statements, management is required to make estimates, assumptions and

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judgments that affect the amounts reported in the financial statements and accompanying notes. These estimates, assumptions and judgments, which are reviewed with the Audit Committee of the Board of Directors, are based on information available as of the date of the financial statements. Actual results could differ from these estimates. These policies, along with the disclosures presented in the financial statement notes and in this financial review, provide information on how significant assets and liabilities are valued in the financial statements and how those values are determined. Based on the valuation techniques used and the sensitivity of financial statement amounts to the methods, assumptions, and estimates underlying those amounts, management has identified the determination of the allowance for credit losses, the valuation of investment securities and the related other-than-temporary impairment analysis, the accounting for acquired loans and the calculation of the income tax provision to be the accounting areas that require the most subjective or complex judgments, and as such could be most subject to revision as new information becomes available.

Allowance for Credit Losses

As explained in Note 6, Allowance for Credit Losses to the unaudited Consolidated Financial Statements, the allowance for loan losses represents management’s estimate of the probable credit losses inherent in the lending portfolio. Determining the allowance for loan losses requires management to make estimates of losses that are highly uncertain and require a high degree of judgment. At March 31, 2018, the allowance for loan losses was $76.65 million and is subject to periodic adjustment based on management’s assessment of current probable losses in the loan portfolio. Such adjustment from period to period can have a significant impact on United’s consolidated financial statements. To illustrate the potential effect on the financial statements of our estimates of the allowance for loan losses, a 10% increase in the allowance for loan losses would have required $7.67 million in additional allowance (funded by additional provision for credit losses), which would have negatively impacted the first quarter of 2018 net income by approximately $6.06 million, after-tax or $0.06 diluted per common share. Management’s evaluation of the adequacy of the allowance for loan losses and the appropriate provision for loan losses is based upon a quarterly evaluation of the loan portfolio. This evaluation is inherently subjective and requires significant estimates, including estimates related to the amounts and timing of future cash flows, value of collateral, losses on pools of homogeneous loans based on historical loss experience, and consideration of current economic trends, all of which are susceptible to constant and significant change. The allowance allocated to specific credits and loan pools grouped by similar risk characteristics is reviewed on a quarterly basis and adjusted as necessary based upon subsequent changes in circumstances. In determining the components of the allowance for loan losses, management considers the risk arising in part from, but not limited to, charge-off and delinquency trends, current economic and business conditions, lending policies and procedures, the size and risk characteristics of the loan portfolio, concentrations of credit, and other various factors. The methodology used to determine the allowance for loan losses is described in Note 6. A discussion of the factors leading to changes in the amount of the allowance for credit losses is included in the Provision for Credit Losses section of this Management’s Discussion and Analysis of Financial Condition and Results of Operations (MD&A). Additional information relating to United’s loans is included in Note 4, Loans to the unaudited Consolidated Financial Statements.

Investment Securities

Accounting estimates are used in the presentation of the investment portfolio and these estimates impact the presentation of United’s financial condition and results of operations. United classifies its investments in debt as either held to maturity or available for sale and its equity securities as available for sale. Securities held to maturity are accounted for using historical costs, adjusted for amortization of premiums and accretion of discounts. Securities available for sale are accounted for at fair value, with the net unrealized gains and losses, net of income tax effects, presented as a separate component of shareholders’ equity. When available, fair values of securities are based on quoted prices or prices obtained from third party vendors. Third party vendors compile prices from various sources and may determine the fair value of identical or similar securities by using pricing models that consider observable market data. Prices obtained from third party vendors that do not reflect forced liquidation or distressed sales are not

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adjusted by management. Where prices reflect forced liquidation or distressed sales, as is the case with United’s portfolio of trust preferred securities (Trup Cdos), management estimates fair value based on a discounted cash flow methodology using appropriately adjusted discount rates reflecting nonperformance and liquidity risks. Due to the subjective nature of this valuation process, it is possible that the actual fair values of these securities could differ from the estimated amounts, thereby affecting United’s financial position, results of operations and cash flows. The potential impact to United’s financial position, results of operations or cash flows for changes in the valuation process cannot be reasonably estimated.

If the estimated value of investments is less than the cost or amortized cost, the investment is considered impaired and management evaluates whether an event or change in circumstances has occurred that may have a significant adverse effect on the fair value of the investment. If such an event or change has occurred, management must exercise judgment to determine the nature of the potential impairment (i.e., temporary or other-than-temporary) in order to apply the appropriate accounting treatment. If United intends to sell, or is more likely than not they will be required to sell an impaired debt security before recovery of its amortized cost basis less any current period credit loss, other-than-temporary impairment is recognized in earnings. The amount recognized in earnings is equal to the entire difference between the security’s amortized cost basis and its fair value at the balance sheet date. If United does not intend to sell, and is not more likely than not they will be required to sell the impaired debt security prior to recovery of its amortized cost basis less any current-period credit loss, the other-than-temporary impairment is separated into the following: 1) the amount representing the credit loss, which is recognized in earnings, and 2) the amount related to all other factors, which is recognized in other comprehensive income. For additional information on management’s consideration of investment valuation and other-than-temporary impairment, see Note 3, Investment Securities, and Note 12, Fair Value Measurements, to the unaudited consolidated financial statements.

Accounting for Acquired Loans

Loans acquired are initially recorded at their acquisition date fair values. The fair value of the acquired loans is based on the present value of the expected cash flows, including principal, interest and prepayments. Periodic principal and interest cash flows are adjusted for expected losses and prepayments, then discounted to determine the present value and summed to arrive at the estimated fair value. Fair value estimates involve assumptions and judgments as to credit risk, interest rate risk, prepayment risk, liquidity risk, default rates, loss severity, payment speeds, collateral values and discount rate.

Acquired loans are divided into loans with evidence of credit quality deterioration, which are accounted for under ASC topic 310-30 (acquired impaired) and loans that do not meet this criteria, which are accounted for under ASC topic 310-20 (acquired performing). Acquired impaired loans have experienced a deterioration of credit quality from origination to acquisition for which it is probable that United will be unable to collect all contractually required payments receivable, including both principal and interest. In the assessment of credit quality, numerous assumptions, interpretations and judgments must be made, based on internal and third-party credit quality information and ultimately the determination as to the probability that all contractual cash flows will not be able to be collected. This is a point in time assessment and inherently subjective due to the nature of the available information and judgment involved.

Subsequent to the acquisition date, United continues to estimate the amount and timing of cash flows expected to be collected on acquired impaired loans. Increases in expected cash flows will generally result in a recovery of any previously recorded allowance for loan losses, to the extent applicable, and/or a reclassification from the nonaccretable difference to accretable yield, which will be recognized prospectively. The present value of any decreases in expected cash flows after the acquisition date will generally result in an impairment charge recorded as a provision for loan losses, resulting in an increase to the allowance for loan losses.

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For acquired performing loans, the difference between the acquisition date fair value and the contractual amounts due at the acquisition date represents the fair value adjustment. Fair value adjustments may be discounts (or premiums) to a loan’s cost basis and are accreted (or amortized) to interest income over the loan’s remaining life using the level yield method. Subsequent to the acquisition date, the methods utilized to estimate the required allowance for loan losses for

these loans is similar to originated loans.

See Note 2, Merger and Acquisitions, and Note 4, Loans, to the unaudited Consolidated Financial Statements for information regarding United’s acquired loans disclosures.

Income Taxes

United’s calculation of income tax provision is inherently complex due to the various different tax laws and jurisdictions in which we operate and requires management’s use of estimates and judgments in its determination. The current income tax liability also includes income tax expense related to our uncertain tax positions as required in ASC topic 740, “Income Taxes.” Changes to the estimated accrued taxes can occur due to changes in tax rates, implementation of new business strategies, resolution of issues with taxing authorities and recently enacted statutory, judicial and regulatory guidance. These changes can be material to the Company’s operating results for any particular reporting period. The analysis of the income tax provision requires the assessments of the relative risks and merits of the appropriate tax treatment of transactions, filing positions, filing methods and taxable income calculations after considering statutes, regulations, judicial precedent and other information. United strives to keep abreast of changes in the tax laws and the issuance of regulations which may impact tax reporting and provisions for income tax expense. United is also subject to audit by federal and state authorities. Because the application of tax laws is subject to varying interpretations, results of these audits may produce indicated liabilities which differ from United’s estimates and provisions. United continually evaluates its exposure to possible tax assessments arising from audits and records its estimate of probable exposure based on current facts and circumstances. The potential impact to United’s operating results for any of the changes cannot be reasonably estimated. See Note 15, Income Taxes, to the unaudited Consolidated Financial Statements for information regarding United’s ASC topic 740 disclosures.

Use of Fair Value Measurements

United determines the fair value of its financial instruments based on the fair value hierarchy established in ASC topic 820, whereby the 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 establishes a three-level hierarchy for disclosure of assets and liabilities recorded at fair value. The classification of assets and liabilities within the hierarchy is based on whether the inputs in the methodology for determining fair value are observable or unobservable. Observable inputs reflect market-based information obtained from independent sources (Level 1 or Level 2), while unobservable inputs reflect management’s estimate of market data (Level 3). For assets and liabilities that are actively traded and have quoted prices or observable market data, a minimal amount of subjectivity concerning fair value is needed. Prices and values obtained from third party vendors that do not reflect forced liquidation or distressed sales are not adjusted by management. When quoted prices or observable market data are not available, management’s judgment is necessary to estimate fair value.

At March 31, 2018, approximately 12.88% of total assets, or $2.40 billion, consisted of financial instruments recorded at fair value. Of this total, approximately 90.57% or $2.17 billion of these financial instruments used valuation methodologies involving observable market data, collectively Level 1 and Level 2 measurements, to determine fair value. Approximately $226.12 million or 9.43% of these financial instruments were valued using unobservable market information or Level 3 measurements. Most of these financial instruments valued using unobservable market information were pooled trust preferred investment securities classified as available-for-sale. At March 31, 2018, only $762 thousand or less than 1% of total liabilities were recorded at fair value. This entire amount was valued using methodologies involving observable market data. United does not believe that any changes in the unobservable inputs used to value the financial instruments mentioned above would have a material impact on United’s results of operations, liquidity, or capital resources. See Note 12, Fair Value Measurements, to the unaudited Consolidated Financial Statements for additional information regarding ASC topic 820 and its impact on United’s financial statements.

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Any material effect on the financial statements related to these critical accounting areas are further discussed in this MD&A.

FINANCIAL CONDITION

United’s total assets as of March 31, 2018 were $18.62 billion, which was a decrease of $439.26 million or 2.30% from December 31, 2017. The decrease was mainly due to a decrease of $527.00 million or 31.63% in cash and cash equivalents. Portfolio loans were relatively flat, decreasing $27.00 million or less than 1%. Investment securities increased $197.32 million or 9.53%. Loans held for sale and other assets decreased $72.04 million or 27.09% and $10.82 million or 2.23%, respectively. Total liabilities decreased $450.04 million or 2.85% from year-end 2017. Deposits decreased $184.42 million or 1.33%. Borrowings decreased $278.27 million or 15.11% while accrued expenses and other liabilities increased $12.58 million or 8.64%. Shareholders’ equity was relatively flat from December 31, 2017, increasing $10.78 million or less than 1%.

The following discussion explains in more detail the changes in financial condition by major category.

Cash and Cash Equivalents

Cash and cash equivalents at March 31, 2018 decreased $527.00 million or 31.63% from year-end 2017. Of this total decrease, cash and due from banks decreased $18.67 million while interest-bearing deposits with other banks decreased $508.33 million or 34.61% as United used excess cash to invest in securities and repay borrowings. Federal funds sold were flat. During the first three months of 2018, net cash of $158.48 million was provided by operating activities while $186.99 million and $498.49 million was used in investing activities and financing activities, respectively. See the unaudited Consolidated Statements of Cash Flows for data on cash and cash equivalents provided and used in operating, investing and financing activities for the first three months of 2018 and 2017.

Securities

Total investment securities at March 31, 2018 increased $197.32 million or 9.53% from year-end 2017. Securities available for sale increased $196.36 million or 10.40%. This change in securities available for sale reflects $102.77 million in sales, maturities and calls of securities, $330.03 million in purchases, and a decrease of $22.03 million in market value. Securities held to maturity were flat, declining $23 thousand or less than 1% from year-end 2017 due to calls and maturities of securities. Equity securities, now carried at fair value, were $11.16 million at March 31, 2018. Other investment securities decreased $10.17 million or 6.26% from year-end 2017 due mainly to the redemption of Federal Reserve Bank (FRB) stock.

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The following table summarizes the changes in the available for sale securities since year-end 2017:

	March 31		December 31
(Dollars in thousands)	2018		2017		$ Change			% Change
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	163,106	$	114,758	$	48,348			42.13	%
State and political subdivisions		293,712		303,869		(10,157	)		(3.34	%)
Mortgage-backed securities		1,397,492		1,274,962		122,530			9.61	%
Asset-backed securities		146,584		109,970		36,614			33.29	%
Market equity securities		0		9,878		(9,878	)		(100.00	%)
Trust preferred collateralized debt obligations		8,064		34,269		(26,205	)		(76.47	%)
Single issue trust preferred securities		13,146		12,560		586			4.67	%
Corporate securities		63,007		28,490		34,517			121.15	%
Total available for sale securities, at fair value	$	2,085,111	$	1,888,756	$	196,355			10.40	%

The following table summarizes the changes in the held to maturity securities since year-end 2017:

(Dollars in thousands)	March 31 2018		December 31 2017		$ Change			% Change
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	5,160	$	5,187	$	(27	)		(0.52	%)
State and political subdivisions		5,797		5,797		0			0.0	%
Mortgage-backed securities		23		23		0			0.00	%
Single issue trust preferred securities		9,405		9,401		4			0.04	%
Other corporate securities		20		20		0			0.00	%
Total held to maturity securities, at amortized cost	$	20,405	$	20,428	$	(23	)		(0.11	%)

At March 31, 2018, gross unrealized losses on available for sale securities were $38.22 million. Securities in an unrealized loss position at March 31, 2018 consisted primarily of Trup Cdos, single issue trust preferred securities, state and political subdivision securities, and agency commercial and residential mortgage-backed securities. The Trup Cdos and the single issue trust preferred securities relate to securities of financial institutions. The state and political subdivisions securities relate to securities issued by various municipalities. The agency commercial and residential mortgage-backed securities relate to commercial and residential properties and provide a guaranty of full and timely payments of principal and interest by the issuing agency.

As of March 31, 2018, United’s mortgage-backed securities had an amortized cost of $1.43 billion, with an estimated fair value of $1.40 billion. The portfolio consisted primarily of $934.58 million in agency residential mortgage-backed securities with a fair value of $915.57 million, $4.67 million in non-agency residential mortgage-backed securities with an estimated fair value of $5.17 million, and $485.85 million in commercial agency mortgage-backed securities with an estimated fair value of $476.78 million.

As of March 31, 2018, United’s corporate securities had an amortized cost of $242.22 million, with an estimated fair value of $239.57 million. The portfolio consisted primarily of $9.19 million in Trup Cdos with a fair value of $8.06 million and $22.84 million in single issue trust preferred securities with an estimated fair value of $21.90 million. In addition to the trust preferred securities, the Company held positions in various other corporate securities, including asset-backed securities with an amortized cost of $146.77 million and a fair value of $146.58 million and other corporate securities, with an amortized cost of $63.42 million and a fair value of $63.03 million.

The Trup Cdos consisted of pools of trust preferred securities issued by trusts related to financial institutions. During the first quarter of 2018, seven Trup Cdos were sold and one Trup Cdo was redeemed at par. As of March 31, 2018,

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Trup Cdos with a fair value of $3.01 million were investment grade, and the remaining $5.05 million were below investment grade. As of March 31, 2018, United’s single issue trust preferred securities had a fair value of $21.90 million. Of the $21.90 million, $8.94 million or 40.79% were investment grade; $4.65 million or 21.24% were split rated; $3.21 million or 14.67% were below investment grade; and $5.10 million or 23.29% were unrated. The two largest exposures accounted for 55.03% of the $21.90 million. These included SunTrust Bank at $6.95 million and Emigrant Bank at $5.10 million. All single-issue trust preferred securities are currently receiving full scheduled principal and interest payments.

The following is a summary of available for sale single-issue trust preferred securities as of March 31, 2018:

Security	Moodys		S&P		Fitch		Amortized Cost		Fair Value		Unrealized Loss/ (Gain)
							(Dollars in thousands)
Emigrant Bank		NR		NR		WD	$	5,714	$	5,100	$	614
Bank of America		Baa3		NR		BBB-		4,696		4,800		(104	)
M&T Bank		NR		BBB-		BBB-		3,023		3,246		(223	)
							$	13,433	$	13,146	$	287

Additionally, the Company owns two single-issue trust preferred securities that are classified as held-to-maturity and include at least one rating below investment grade. These securities include SunTrust Bank ($7.43 million) and Royal Bank of Scotland ($976 thousand).

During the first quarter of 2018, United recognized other-than-temporary impairment charges totaling $300 thousand on one security. Other than this one security, management does not believe that any individual security with an unrealized loss as of March 31, 2018 is other-than-temporarily impaired. United believes the decline in value resulted from changes in market interest rates, credit spreads and liquidity, not an adverse change in the expected contractual cash flows. Based on a review of each of the securities in the investment portfolio, management concluded that it was not probable that it would be unable to realize the cost basis investment and appropriate interest payments on such securities. United has the intent and the ability to hold these securities until such time as the value recovers or the securities mature. However, United acknowledges that any impaired securities may be sold in future periods in response to significant, unanticipated changes in asset/liability management decisions, unanticipated future market movements or business plan changes.

Further information regarding the amortized cost and estimated fair value of investment securities, including remaining maturities as well as a more detailed discussion of management’s other-than-temporary impairment analysis, is presented in Note 3 to the unaudited Notes to Consolidated Financial Statements.

Loans held for sale

Loans held for sale decreased $72.04 million or 27.09%. Loan sales in the secondary market exceeded originations during the first three months of 2018. Loan originations for the first three months of 2018 were $522.96 million while loans sales were $567.59 million. Loans held for sale were $193.92 million at March 31, 2018 as compared to $265.96 million at year-end 2017.

Portfolio Loans

Loans, net of unearned income, were flat from year-end 2017, decreasing $27.00 million or less than 1%. Since year-end 2017, commercial, financial and agricultural loans were relatively flat, decreasing $65.83 million or less than 1% as commercial loans (not secured by real estate) decreased $46.66 million while commercial real estate loans were relatively flat, decreasing $19.17 million or less than 1%. In addition, construction and land development loans decreased $71.78 million or 4.77%. Partially offsetting these decreases were increases in residential real estate loans of $69.82 million or 2.33% and consumer loans of $38.89 million or 5.44%, due mainly to an increase in automobile loans.

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The following table summarizes the changes in the major loan classes since year-end 2017:

	March 31			December 31
(Dollars in thousands)	2018			2017			$ Change			% Change
Loans held for sale	$	193,915		$	265,955		$	(72,040	)		(27.09	%)
Commercial, financial, and agricultural:
Owner-occupied commercial real estate	$	1,366,980		$	1,361,629		$	5,351			0.39	%
Nonowner-occupied commercial real estate		4,426,776			4,451,298			(24,522	)		(0.55	%)
Other commercial loans		1,952,322			1,998,979			(46,657	)		(2.33	%)
Total commercial, financial, and agricultural	$	7,746,078		$	7,811,906		$	(65,828	)		(0.84	%)
Residential real estate		3,065,990			2,996,171			69,819			2.33	%
Construction & land development		1,433,125			1,504,907			(71,782	)		(4.77	%)
Consumer:
Bankcard		9,372			10,314			(942	)		(9.13	%)
Other consumer		743,870			704,039			39,831			5.66	%
Total gross loans	$	12,998,435		$	13,027,337		$	(28,902	)		(0.22	%)
Less: Unearned income		(14,018	)		(15,916	)		1,898			11.93	%
Total Loans, net of unearned income	$	12,984,417		$	13,011,421		$	(27,004	)		(0.21	%)

The following table summarizes the outstanding balances of portfolio loans originated and acquired, by type, as of March 31, 2018 and December 31, 2017:

	March 31, 2018
(In thousands)	Commercial, financial  and agricultural		Residential  real estate		Construction & land  development		Consumer		Total
Originated	$	4,765,653	$	2,136,334	$	1,064,791	$	747,998	$	8,714,776
Acquired		2,980,425		929,656		368,334		5,244		4,283,659
Total gross loans	$	7,746,078	$	3,065,990	$	1,433,125	$	753,242	$	12,998,435
	December 31, 2017
(In thousands)	Commercial, financial and agricultural		Residential real estate		Construction & land development		Consumer		Total
Originated	$	4,647,745	$	1,974,804	$	1,032,629	$	707,661	$	8,362,839
Acquired		3,164,161		1,021,367		472,278		6,692		4,664,498
Total gross loans	$	7,811,906	$	2,996,171	$	1,504,907	$	714,353	$	13,027,337

For a further discussion of loans see Note 4 to the unaudited Notes to Consolidated Financial Statements.

Other Assets

Other assets decreased $10.82 million or 2.23% from year-end 2017. Income taxes receivable decreased $14.85 million. In addition, core deposit intangibles decreased $2.01 million due to amortization and OREO decreased $1.57 million due to sales and adjustments to the fair value of properties. Partially offsetting these decreases were increases for the quarter in deferred tax assets of $4.27 million due mainly to a net unrealized loss on available-for-sale investment securities and bank-owned life insurance policies of $1.30 million due to an increase in the cash surrender value.

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Deposits

Deposits represent United’s primary source of funding. Total deposits at March 31, 2018 decreased $184.42 million or 1.33% from year-end 2017. In terms of composition, noninterest-bearing deposits increased $49.52 million or 1.15% while interest-bearing deposits decreased $233.94 million or 2.45% from December 31, 2017.

The increase in noninterest-bearing deposits was due mainly to increases in personal and commercial noninterest-bearing deposits of $39.27 million or 5.60% and $34.14 million or 1.03%, respectively.

All major categories of interest-bearing deposits except MMDAs and regular savings decreased from year-end 2017. Interest-bearing checking accounts decreased $33.50 million or 1.55% mainly due to a decrease of $35.58 million in personal interest-bearing checking accounts. Regular savings were relatively flat from year-end 2017, increasing $9.16 million or less than 1%. Interest-bearing MMDAs increased $65.77 million or 1.75% as brokered MMDAs and personal MMDAs were up $145.18 million and $21.59 million, respectively, while commercial MMDAs declined $103.81 million. Time deposits over $100,000 decreased $230.93 million or 12.88% as Certificate of Deposit Account Registry Service (CDARS) balances decreased $129.04 million, fixed rate certificates of deposits (CDs) over $100,000 decreased $54.41 million and brokered deposits declined $45.85 million. Time deposits under $100,000 decreased $44.43 million or 5.59%. This decrease in time deposits under $100,000 is the result of decreases of $34.77 million and $10.57 million in fixed rate CDs and CDARS balances, respectively.

The following table summarizes the changes in the deposit categories since year-end 2017:

(Dollars in thousands)	March 31 2018		December 31 2017		$ Change			% Change
Demand deposits	$	4,344,203	$	4,294,687	$	49,516			1.15	%
Interest-bearing checking		2,123,473		2,156,974		(33,501	)		(1.55	%)
Regular savings		1,043,256		1,034,100		9,156			0.89	%
Money market accounts		3,822,025		3,756,259		65,766			1.75	%
Time deposits under $100,000		750,705		795,137		(44,432	)		(5.59	%)
Time deposits over $100,000 (1)		1,562,506		1,793,434		(230,928	)		(12.88	%)
Total deposits	$	13,646,168	$	13,830,591	$	(184,423	)		(1.33	%)

(1) Includes time deposits of $250,000 or more of $707,003 and $790,703 at March 31, 2018 and December 31, 2017, respectively.

Borrowings

Total borrowings at March 31, 2018 decreased $278.27 million or 15.11% from year-end 2017. During the first three months of 2018, short-term borrowings decreased $259.20 million or 54.27% due to a $200.00 million decrease in overnight Federal Home Loan Bank (FHLB) and a $60.58 million decrease in short-term securities sold under agreements to repurchase. Federal funds purchased increased $1.38 million or 8.50%. Long-term borrowings decreased $19.07 million or 1.40% from year-end 2017 due to net repayments on long-term FHLB advances and the redemption of a trust preferred issuance (Century Trust).

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The table below summarizes the change in the borrowing categories since year-end 2017:

(Dollars in thousands)	March 31 2018		December 31 2017		$ Change			% Change
Federal funds purchased	$	17,615	$	16,235	$	1,380			8.50	%
Short-term securities sold under agreements to repurchase		200,771		261,352		(60,581	)		(23.18	%)
Long-term securities sold under agreements to repurchase		50,000		50,000		0			0.00	%
Short-term FHLB advances		0		200,000		(200,000	)		(100.00	%)
Long-term FHLB advances		1,060,948		1,071,531		(10,583	)		(0.99	%)
Issuances of trust preferred capital securities		233,961		242,446		(8,485	)		(3.50	%)
Total borrowings	$	1,563,295	$	1,841,564	$	(278,269	)		(15.11	%)

For a further discussion of borrowings see Notes 8 and 9 to the unaudited Notes to Consolidated Financial Statements.

Accrued Expenses and Other Liabilities

Accrued expenses and other liabilities at March 31, 2018 increased $12.58 million or 8.64% from year-end 2017. In particular, accounts payable associated with George Mason increased $18.90 million, business franchise taxes increased $2.20 million and income taxes payable increased $2.05 million due to a timing difference. Partially offsetting these increases in accrued expenses and other liabilities was a decrease of $7.58 million in the pension liability due a discretionary contribution of $7.00 million to the Company’s pension plan during the quarter and a decrease of $3.95 million in incentive payables due to payments.

Shareholders’ Equity

Shareholders’ equity at March 31, 2018 was relatively flat from December 31, 2017, increasing $10.78 million or less than 1%.

Retained earnings increased $32.45 million or 3.64% from year-end 2017. Earnings net of dividends for the first three months of 2018 were $25.96 million.

Accumulated other comprehensive income decreased $22.53 million or 53.61% due mainly to a decrease of $16.77 million in United’s available for sale investment portfolio, net of deferred income taxes. The after-tax accretion of pension costs was $733 thousand for the first quarter of 2018.

RESULTS OF OPERATIONS

Overview

Net income for the first three months of 2018 was $61.71 million or $0.59 per diluted share compared to $38.81 million or $0.48 per share for the first three months of 2017. United’s annualized return on average assets for the first three months of 2018 was 1.35% and return on average shareholders’ equity was 7.65% as compared to 1.09% and 6.98% for the first three months of 2017. United’s Federal Reserve peer group’s (bank holding companies with total assets over $10 billion) most recently reported average return on assets and average return on equity were 0.90% and 7.61%, respectively, for the year of 2017.

As previously mentioned, United completed its acquisition of Cardinal on April 21, 2017. The financial results of Cardinal are included in United’s results from the acquisition date. As a result of the acquisition, the first three months of 2018 was impacted for increased levels of average balances, income, and expense as compared to the first three months of 2017.

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Net interest income for the first three months of 2018 was $144.04 million, which was an increase of $36.42 million or 33.84% from net interest income of $107.62 million for the first three months of 2017. The increase in net interest income occurred because total interest income increased $46.43 million while total interest expense only increased $10.00 million from the first quarter of 2017.

The provision for credit losses was $5.18 million for the first three months of 2018 as compared to $5.90 million for the first three months of 2017. Noninterest income was $31.19 million for the first three months of 2018, up $11.05 million or 54.83% when compared to the first three months of 2017. Included in the results for the first quarter of 2017 was a net gain of $3.77 million on the redemption of an investment security. Noninterest expense for the first three months of 2018 increased $27.61 million or 43.94% from the first three months of 2017. The first quarter of 2017 included $1.23 million of merger expenses related to the acquisition of Cardinal. Income taxes decreased $2.32 million or 11.46% for the first three months of 2018 as compared to the first three months of 2017. The effective tax rate was 22.48% and 34.25% for the first quarter of 2018 and 2017, respectively.

The following discussion explains in more detail the results of operations by major category.

Business Segments

As a result of the Cardinal acquisition, United now operates in two business segments: community banking and mortgage banking. Prior to the Cardinal acquisition, United’s business activities were confined to just one reportable segment of community banking.

Community Banking

Net income attributable to the community banking segment for the first quarter of 2018 was $66.45 million compared to net income of $38.02 million for the first quarter of 2017.

Net interest income increased $36.60 million to $146.26 million for the first quarter of 2018, compared to $109.66 million for the same period of 2017. Generally, net interest income for the first quarter of 2018 increased from the first quarter of 2017 because of the earning assets added from the Cardinal acquisition. Provision for loan losses was $5.18 million for the three months ended March 31, 2018 compared to a provision of $5.90 million for the same period of 2017. Noninterest income increased $318 thousand for the first quarter of 2018 to $17.13 million as compared to $16.81 million for the first quarter of 2017. Noninterest expense was $72.49 million for the first quarter of 2018, compared to $62.75 million for the same period of 2017. The increase of $9.74 million in noninterest expense was primarily attributable to increases in branches, staffing and merger-related expenses from the Cardinal acquisition.

Mortgage Banking

The mortgage banking segment reported a net loss of $2.42 million for the first quarter of 2018. Noninterest income, which consists mainly of realized and unrealized gains associated with the fair value of commitments and loans held for sale, was $14.88 million for the first quarter of 2018. Noninterest expense was $18.38 million for the first quarter of 2018. Noninterest expense consists mainly of salaries, commissions and benefits of mortgage segment employees. There is no comparison to results for 2017 because United did not have a mortgage banking segment in the first quarter of 2017.

The following discussion explains in more detail the consolidated results of operations by major category.

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Net Interest Income

Net interest income represents the primary component of United’s earnings. It is the difference between interest income from earning assets and interest expense incurred to fund these assets. Net interest income is impacted by changes in the volume and mix of interest-earning assets and interest-bearing liabilities, as well as changes in market interest rates. Such changes, and their impact on net interest income in 2018 and 2017, are presented below.

Net interest income for the first quarter of 2018 was $144.04 million, which was an increase of $36.42 million or 33.84% from the first quarter of 2017. The $36.42 million increase in net interest income occurred because total interest income increased $46.43 million while total interest expense only increased $10.00 million from the first quarter of 2017. On a linked-quarter basis, net interest income for the first quarter of 2018 decreased $10.81 million or 6.98% from the fourth quarter of 2017. The $10.81 million decrease in net interest income occurred because total interest income decreased $9.33 million while total interest expense increased $1.48 million from the fourth quarter of 2017.

Generally, interest income for the first quarter of 2018 increased from the first quarter of 2017 because of the earning assets added from the Cardinal acquisition. The higher amount of interest expense for the first quarter of 2018 from the first quarter of 2017 was due mainly to the interest-bearing liabilities added from the Cardinal acquisition and higher market interest rates. In addition, loan accretion on acquired loans for the first quarter of 2018 increased from the same time period last year. For the purpose of this remaining discussion, net interest income is presented on a tax-equivalent basis to provide a comparison among all types of interest earning assets. The tax-equivalent basis adjusts for the tax-favored status of income from certain loans and investments. Although this is a non-GAAP measure, United’s management believes this measure is more widely used within the financial services industry and provides better comparability of net interest income arising from taxable and tax-exempt sources. United uses this measure to monitor net interest income performance and to manage its balance sheet composition.

Tax-equivalent net interest income for the first quarter of 2018 was $145.55 million, an increase of $36.36 million or 33.30% from the first quarter of 2017 due mainly to an increase in average earning assets from the Cardinal acquisition. Average earning assets for the first quarter of 2018 increased $3.39 billion or 26.36% from the first quarter of 2017 due mainly to a $2.85 billion or 27.79% increase in average net loans. Average investment securities increased $810.48 million or 59.21% while average short-term investments decreased $267.85 million or 21.47%. The first quarter of 2018 average yield on earning assets increased 34 basis points from the first quarter of 2017 due to additional loan accretion of $6.53 million on acquired loans and higher market interest rates. Partially offsetting the increases to tax-equivalent net interest income for the first quarter of 2018 was an increase of 26 basis points in the average cost of funds as compared to the first quarter of 2017 due to the higher market interest rates. The net interest margin of 3.61% for the first quarter of 2018 was an increase of 18 basis points from the net interest margin of 3.43% for the first quarter of 2017.

On a linked-quarter basis, net interest income for the first quarter of 2018 decreased $10.81 million or 6.98% from the fourth quarter of 2017. The $10.81 million decrease in net interest income occurred because total interest income decreased $9.33 million while total interest expense increased $1.48 million from the fourth quarter of 2017. United’s tax-equivalent net interest income for the first quarter of 2018 decreased $11.57 million or 7.37% from the fourth quarter of 2017 due mainly to a decrease in the average yield on earning assets. The yield on average earning assets for the first quarter of 2018 decreased 10 basis points from the fourth quarter of 2017 due mainly to a lower yield on loans as a result of the loan accretion on acquired loans declining $6.04 million. In addition, the average cost of funds increased 8 basis points from the fourth quarter of 2017 due to higher market interest rates. Average earning assets for the first quarter of 2018 decreased $307.19 million or 1.86% as compared to the fourth quarter of 2017 as average short-term investments declined $391.16 million or 28.53% and average net loans decreased $132.57 million or 1.00% for the linked-quarter. Average investment securities increased $216.53 million or 11.03%. The net interest margin of 3.61% for the first quarter of 2018 was a decrease of 16 basis points from the net interest margin of 3.77% for the fourth quarter of 2017.

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United’s tax-equivalent net interest income also includes the impact of acquisition accounting fair value adjustments.

The following table provides the discount/premium and net accretion impact to tax-equivalent net interest income for the three months ended March 31, 2018, March 31, 2017 and December 31, 2017:

	Three Months Ended
(Dollars in thousands)	March 31 2018		March 31 2017			December 31 2017
Loan accretion	$	10,766	$	4,235		$	16,807
Certificates of deposit		326		47			604
Long-term borrowings		269		(117	)		269
Total	$	11,361	$	4,165		$	17,680

The following tables reconcile the difference between net interest income and tax-equivalent net interest income for the three months ended March 31, 2018, March 31, 2017 and December 31, 2017.

	Three Months Ended
(Dollars in thousands)	March 31 2018		March 31 2017		December 31 2017
Net interest income, GAAP basis	$	144,043	$	107,620	$	154,856
Tax-equivalent adjustment (1)		1,503		1,564		2,261
Tax-equivalent net interest income	$	145,546	$	109,184	$	157,117

(1) The tax-equivalent adjustment combines amounts of interest income on federally nontaxable loans and investment securities using the statutory federal income tax rate of 21% for the three months ended March 31, 2018 and 35% for the three months ended March 31, 2017 and December 31, 2017. All interest income on loans and investment securities was subject to state income taxes.

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The following tables show the unaudited consolidated daily average balance of major categories of assets and liabilities for the three-month periods ended March 31, 2018 and 2017, respectively, with the interest and rate earned or paid on such amount. The interest income and yields on federally nontaxable loans and investment securities are presented on a tax-equivalent basis using the statutory federal income tax rate of 21% for the three-month period ended March 31, 2018 and 35% for the three-month period ended March 31, 2017. Interest income on all loans and investment securities was subject to state income taxes.

	Three Months Ended								Three Months Ended
	March 31, 2018								March 31, 2017
(Dollars in thousands)	Average Balance			Interest (1)		Avg. Rate (1)			Average Balance			Interest (1)		Avg. Rate (1)
ASSETS
Earning Assets:
Federal funds sold and securities purchased under agreements to resell and other short-term investments	$	979,666		$	4,917		2.04	%	$	1,247,520		$	2,686		0.87	%
Investment Securities:
Taxable		1,923,339			11,875		2.47	%		1,193,779			8,011		2.68	%
Tax-exempt		256,000			2,254		3.52	%		175,077			1,721		3.93	%
Total Securities		2,179,339			14,129		2.59	%		1,368,856			9,732		2.84	%
Loans, net of unearned income (2)		13,173,656			149,642		4.60	%		10,321,615			109,904		4.31	%
Allowance for loan losses		(76,575	)							(72,843	)
Net loans		13,097,081					4.63	%		10,248,772					4.34	%
Total earning assets		16,256,086		$	168,688		4.19	%		12,865,148		$	122,322		3.85	%
Other assets		2,287,711								1,540,585
TOTAL ASSETS	$	18,543,797							$	14,405,733
LIABILITIES
Interest-Bearing Funds:
Interest-bearing deposits	$	9,353,479		$	15,657		0.68	%	$	7,596,533		$	8,468		0.45	%
Short-term borrowings		286,350			421		0.60	%		226,718			304		0.54	%
Long-term borrowings		1,352,280			7,064		2.12	%		1,164,119			4,366		1.52	%
Total Interest-Bearing Funds		10,992,109			23,142		0.85	%		8,987,370			13,138		0.59	%
Noninterest-bearing deposits		4,174,169								3,090,248
Accrued expenses and other liabilities		104,486								71,632
TOTAL LIABILITIES		15,270,764								12,149,250
SHAREHOLDERS’ EQUITY		3,273,033								2,256,483
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$	18,543,797							$	14,405,733
NET INTEREST INCOME				$	145,546							$	109,184
INTEREST SPREAD							3.34	%							3.26	%
NET INTEREST MARGIN							3.61	%							3.43	%

(1) The interest income and the yields on federally nontaxable loans and investment securities are presented on a tax-equivalent basis using the statutory federal income tax rate of 35%.

(2) Nonaccruing loans are included in the daily average loan amounts outstanding.

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Provision for Loan Losses

For the quarters ended March 31, 2018 and 2017, the provision for loan losses was $5.18 million and $5.90 million, respectively. Net charge-offs were $5.15 million for the first quarter of 2018 as compared to net charge-offs of $5.80 million for the same quarter in 2017. These lower amounts of provision expense and net charge-offs for the first quarter of 2018 compared to the first quarter of 2017 were due to a reduction in the amount of specific allocations required for impaired loans and the recognition of several large charge-offs in 2017 which did not occur similarly in 2018. On a linked-quarter basis, the provision for loan losses decreased $1.8 million while net charge-offs decreased $124 thousand from the fourth quarter of 2017. Annualized net charge-offs as a percentage of average loans were 0.16% for the first quarter of 2018. This ratio compares favorably to United’s most recently reported Federal Reserve peer group banking companies’ net charge-offs to average loans percentage of 0.24% for the year of 2017.

At March 31, 2018, nonperforming loans were $157.61 million or 1.21% of loans, net of unearned income compared to nonperforming loans of $168.74 million or 1.30% of loans, net of unearned income at December 31, 2017. The components of nonperforming loans include: 1) nonaccrual loans, 2) loans which are contractually past due 90 days or more as to interest or principal, but have not been put on a nonaccrual basis and 3) loans whose terms have been restructured for economic or legal reasons due to financial difficulties of the borrowers.

Loans past due 90 days or more were $9.17 million at March 31, 2018, a decrease of $638 thousand or 6.51% from $9.80 million at year-end 2017. This decrease was primarily due to the transfer to nonaccrual of several small relationships. At March 31, 2018, nonaccrual loans were $100.17 million, a decrease of $8.63 million or 7.93% from $108.80 million at year-end 2017. This decrease was due to repayment of a significant nonaccrual relationship. Restructured loans were $48.27 million at March 31, 2018, a decrease of $1.86 million or 3.71% from $50.13 million at year-end 2017. The decline was mainly due to repayments. The loss potential on these loans has been properly evaluated and allocated within the Company’s allowance for loan losses.

Nonperforming assets include nonperforming loans and real estate acquired in foreclosure or other settlement of loans (OREO). Total nonperforming assets of $180.39 million, including OREO of $22.78 million at March 31, 2018, represented 0.97% of total assets.

The following table summarizes nonperforming assets for the indicated periods.    

	March  31, 2018		December 31,
(In thousands)			2017		2016		2015		2014		2013
Nonaccrual loans(1)
Originated	$	88,912	$	97,971	$	77,111	$	83,146	$	64,312	$	58,121
Acquired		11,260		10,832		6,414		8,043		10,739		3,807
Loans which are contractually past due 90 days or more as to interest or principal, and are still accruing interest
Originated		5,815		7,288		7,763		11,462		10,868		10,015
Acquired		3,350		2,515		823		166		807		1,029
Restructured loans(1)
Originated		46,864		48,709		21,115		23,890		22,234		8,157
Acquired		1,407		1,420		37		0		0		0
Total nonperforming loans	$	157,608	$	168,835	$	113,263	$	126,707	$	108,960	$	81,129
Other real estate owned		22,778		24,348		31,510		32,228		38,778		38,182
TOTAL NONPERFORMING ASSETS	$	180,386	$	193,083	$	144,773	$	158,935	$	147,738	$	119,311

⁽¹⁾ Restructured loans that were on nonaccrual status for the indicated period are included in “Restructured loans” and not “Nonaccrual loans” (see Note 5 to the unaudited Consolidated Financial Statements for further information).

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Loans are designated as impaired when, in the opinion of management, the collection of principal and interest in accordance with the loan contract is doubtful. At March 31, 2018, impaired loans were $395.66 million, which was a decrease of $27.38 million or 6.47% from the $423.05 million in impaired loans at December 31, 2017. This decrease was due mainly to a reduction in acquired impaired loans as well as the Company’s reduced exposure to the oil, gas and coal industry. Acquired impaired loans are accounted for under ASC Subtopic 310-30. The recorded investment balance and the contractual principal balance of the acquired impaired loans were $189.68 million and $253.83 million at March 31, 2018, respectively, as compared to $210.52 million and $285.96 million, respectively, at December 31, 2017. For the acquired impaired loans accounted for under ASC 310-30, the difference between the contractually required payments due and the cash flows expected to be collected, considering the impact of prepayments, is referred to as the non-accretable difference (the credit mark). The credit mark is not recognized in income. The remaining credit mark was $55.14 million and $60.15 million at March 31, 2018 and December 31, 2017, respectively. For further details regarding impaired loans, see Note 5 to the unaudited Consolidated Financial Statements.

United maintains an allowance for loan losses and a reserve for lending-related commitments. The combined allowance for loan losses and reserve for lending-related commitments are referred to as the allowance for credit losses. At March 31, 2018, the allowance for credit losses was $77.41 million as compared to $77.31 million at December 31, 2017.

At March 31, 2018, the allowance for loan losses was $76.65 million as compared to $76.63 million at December 31, 2017. As a percentage of loans, net of unearned income, the allowance for loan losses was 0.59% at March 31, 2018 and at December 31, 2017. The ratio of the allowance for loan losses to nonperforming loans or coverage ratio was 48.64% and 45.41% at March 31, 2018 and December 31, 2017, respectively. The Company’s detailed methodology and analysis indicated a minimal increase in the allowance for loan losses primarily because of the offsetting factors of changes within historical loss rates and reduced loss allocations on impaired loans.

Allocations are made for specific commercial loans based upon management’s estimate of the borrowers’ ability to repay and other factors impacting collectibility. Other commercial loans not specifically reviewed on an individual basis are evaluated based on historical loss percentages applied to loan pools that have been segregated by risk. Allocations for loans other than commercial loans are made based upon historical loss experience adjusted for current environmental conditions. The allowance for credit losses includes estimated probable inherent but unidentified losses within the portfolio due to uncertainties in economic conditions, delays in obtaining information, including unfavorable information about a borrower’s financial condition, the difficulty in identifying triggering events that correlate perfectly to subsequent loss rates, and risk factors that have not yet fully manifested themselves in loss allocation factors. In addition, a portion of the allowance accounts for the inherent imprecision in the allowance for credit losses analysis.

United’s company-wide review of the allowance for loan losses at March 31, 2018 produced increased allocations in two of the four loan categories. The commercial, financial & agricultural loan pool allocation increased $451 thousand primarily due to an increase in historical loss rates for other commercial loans and increased outstanding balances. The residential real estate allocation increased $326 thousand primarily due to an increase in loans deemed impaired necessitating specific allowance allocation. Offsetting these increases was a decrease in the allocation related to the real estate construction and development loan pool of $758 thousand due to improvement in the historical loss rate applied to the pool. The consumer loan pool also experienced a decrease of $90 thousand due to an improvement in historical loss rates. In summary, the overall level of the allowance for loan losses was relatively stable in comparison to year-end 2017 as a result of offsetting factors within the portfolio as described above.

An allowance is established for probable credit losses on impaired loans via specific allocations. Nonperforming commercial loans and leases are regularly reviewed to identify impairment. A loan or lease is impaired when, based on current information and events, it is probable that the Company will not be able to collect all amounts contractually due. Measuring impairment of a loan requires judgment and estimates, and the eventual outcomes may differ from

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those estimates. Impairment is measured based upon the present value of expected future cash flows from the loan discounted at the loan’s effective rate, the loan’s observable market price or the fair value of collateral if the loan is collateral dependent. When the selected measure is less than the recorded investment in the loan, an impairment has occurred. The allowance for impaired loans was $20.68 million at March 31, 2018 and $22.35 million at December 31, 2017. In comparison to the prior year-end, this element of the allowance decreased by $1.67 million primarily due to decreased specific allocations for commercial, financial & agricultural loans.

Management believes that the allowance for credit losses of $77.41 million at March 31, 2018 is adequate to provide for probable losses on existing loans and lending-related commitments based on information currently available. Note 6 to the accompanying unaudited Notes to Consolidated Financial Statements provides a progression of the allowance for loan losses by portfolio segment.

United’s loan administration policies are focused on the risk characteristics of the loan portfolio in terms of loan approval and credit quality. The commercial loan portfolio is monitored for possible concentrations of credit in one or more industries. Management has lending limits as a percentage of capital per type of credit concentration in an effort to ensure adequate diversification within the portfolio. Most of United’s commercial loans are secured by real estate located in West Virginia, southeastern Ohio, Pennsylvania, Virginia, Maryland and the District of Columbia. It is the opinion of management that these commercial loans do not pose any unusual risks and that adequate consideration has been given to these loans in establishing the allowance for credit losses.

Management is not aware of any potential problem loans, trends or uncertainties, which it reasonably expects, will materially impact future operating results, liquidity, or capital resources which have not been disclosed. Additionally, management has disclosed all known material credits, which cause management to have serious doubts as to the ability of such borrowers to comply with the loan repayment schedules.

Other Income

Other income consists of all revenues, which are not included in interest and fee income related to earning assets. Noninterest income has been and will continue to be an important factor for improving United’s profitability. Recognizing the importance, management continues to evaluate areas where noninterest income can be enhanced.

Noninterest income for the first quarter of 2018 was $31.19 million, which was an increase of $11.05 million or 54.83% from the first quarter of 2017. The increase was due primarily to an increase of $13.90 million in income from mortgage banking income.    

Income from mortgage banking activities totaled $14.57 million for the first quarter of 2018 compared to $675 thousand for the same period of 2017. The increase was the result of the acquisition of Cardinal and, in particular, the acquisition of its mortgage banking subsidiary, George Mason. For the three months ended March 31, 2018 and 2017, mortgage loan sales were $567.59 million and $31.16 million, respectively.

Fees from deposit services were $8.23 million for the first quarter of 2018 which was an increase of $524 thousand or 6.80% from the first quarter of 2017. In particular, debit card fees increased $190 thousand, overdraft fees increased $149 thousand and automated teller machine (ATM) income increased $125 thousand from the first quarter of 2017.

Income from bankcard fees and merchant discounts for the first quarter of 2018 increased $472 thousand or 53.39% from the first quarter of 2017 due to an increase in volume.

Fees from brokerage services for the first quarter of 2018 increased $368 thousand or 19.83% from the same period in 2017 also due to an increase in volume.

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Partially offsetting these increases was a decrease of $4.43 million in net investment securities gains and losses. Included in the results for the first quarter of 2017 was a net gain of $3.77 million on the redemption of an investment security. In addition, other-than-temporary impairment charges of $300 thousand on certain investment securities were recognized during the first quarter of 2018 as compared to other-than-temporary impairment charges of $44 thousand on certain investment securities for the first quarter of 2017.

On a linked-quarter basis, noninterest income for the first quarter of 2018 decreased $1.57 million or 4.80% from the fourth quarter of 2017 due mainly to a net loss of $485 thousand on investment securities transactions as compared to a net gain of $430 thousand for the fourth quarter of 2017. In addition, income from mortgage banking activities declined $740 thousand due to decreased production and sales of mortgage loans in the secondary market and fees from deposit services declined $414 thousand because of a decrease in overdraft fees, due to seasonality. Partially offsetting these decreases was an increase of $312 thousand in income from brokerage services due to increased volume.

Other Expenses

Just as management continues to evaluate areas where noninterest income can be enhanced, it strives to improve the efficiency of its operations to reduce costs. Other expenses include all items of expense other than interest expense, the provision for loan losses, and income taxes. Noninterest expense for the first quarter of 2018 was $90.45 million, which was an increase of $27.61 million or 43.94% from the first quarter of 2017. Generally, this increase was due mainly to the additional employees and branch offices from the Cardinal acquisition as most major categories of noninterest expense showed increases.

Employee compensation for the first quarter of 2018 increased $16.80 million or 69.92% when compared to the first quarter of 2017. This increase was primarily due to an increase of $8.71 million in base salaries due an increase in employees mainly from the Cardinal acquisition. In addition, commissions expense increased $5.77 million mainly due to the production and sales of mortgage loans at George Mason.

Employee benefits expense increased $2.67 million or 38.65% from the first quarter of 2017. The increase for first quarter of 2018 was due in large part to additional health insurance expense of $1.03 million from the same time period last year due to higher premiums and additional employees from the Cardinal acquisition. In addition, Federal Insurance Contributions Act (FICA) expense for first quarter of 2018 increased $1.19 million from the first quarter of 2017 due mainly to the additional employees from the Cardinal acquisition.

Net occupancy expense increased $2.64 million or 38.96% for the first quarter of 2018, as compared to the same period in the prior year. The increase was due mainly to additional building rental expense from the offices added in the Cardinal acquisition.

Data processing expense increased $1.81 million or 44.69% for the first quarter of 2018, as compared to the same periods in prior year due to additional processing as a result of the Cardinal acquisition.

Other expense for the first quarter of 2018 increased $2.87 million or 18.52% from the first quarter of 2017 as amortization of core deposit intangibles increased $962 thousand due to the additional core deposit intangibles added in the Cardinal acquisition. In addition, business franchise taxes and operational expenses increased $649 thousand and $525 thousand, respectively, for the first quarter of 2018 as compared to the same period in 2017.

Partially offsetting these increases for the first quarter of 2018 was a decrease of $468 thousand or 33.10% in other real estate owned (OREO) expense due to fewer declines in the fair value of OREO properties.

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On a linked-quarter basis, noninterest expense decreased $5.33 million or 5.56% from the fourth quarter of 2017 due mainly to decreases of $1.53 million in merger-related expenses and $1.51 million in business franchise taxes within other expense. In addition, employee compensation decreased $612 thousand due mainly to a decrease in commissions expense related to the decrease in production and sales of mortgage loans in the secondary market. OREO expense decreased $406 thousand due to a decline in net losses on the sales of OREO properties. Partially offsetting these decreases was an increase in net occupancy expense of $421 thousand due mainly to increased building maintenance costs.

Income Taxes

For the first quarter of 2018, income tax expense was $17.90 million, a decrease of $2.32 million from the first quarter of 2017 mainly due to a decline in the effective tax rate as a result of the Tax Cuts and Jobs Act of 2017 (the Tax Act). On a linked-quarter basis, income tax expense decreased $48.99 million mainly due to a decline in the effective tax rate and additional income tax expense of $37.73 million related to the estimated impact of the Tax Act recorded in the fourth quarter of 2017 due to a revaluation of United’s deferred tax assets and liabilities using a lower enacted corporate tax rate. United’s effective tax rate was approximately 22.48% for the first quarter of 2018 and 34.25% and 78.82% for the first and fourth quarters of 2017, respectively. The higher effective tax rate for the fourth quarter of 2017 was due to impact of the Tax Act. For further details related to income taxes, see Note 15 of the unaudited Notes to Consolidated Financial Statements contained within this document.

Contractual Obligations, Commitments, Contingent Liabilities and Off-Balance Sheet Arrangements

United has various financial obligations, including contractual obligations and commitments, that may require future cash payments. Please refer to United’s Annual Report on Form 10-K for the year ended December 31, 2017 for disclosures with respect to United’s fixed and determinable contractual obligations. There have been no material changes outside the ordinary course of business since year-end 2017 in the specified contractual obligations disclosed in United’s Annual Report on Form 10-K.

United also enters into derivative contracts, mainly to protect against adverse interest rate movements on the value of certain assets or liabilities, under which it is required to either pay cash to or receive cash from counterparties depending on changes in interest rates. Derivative contracts are carried at fair value and not notional value on the consolidated balance sheet. Because the derivative contracts recorded on the balance sheet at March 31, 2018 do not present the amounts that may ultimately be paid under these contracts, they are excluded from the contractual obligations table in the 2017 Form 10-K report. Further discussion of derivative instruments is presented in Note 11 to the unaudited Notes to Consolidated Financial Statements.

United is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include loan commitments and standby letters of credit. United’s maximum exposure to credit loss in the event of nonperformance by the counterparty to the financial instrument for the loan commitments and standby letters of credit is the contractual or notional amount of those instruments. United uses the same policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Since many of the commitments are expected to expire without being drawn upon, the total commitment amount does not necessarily represent future cash requirements. Further discussion of off-balance sheet commitments is included in Note 10 to the unaudited Notes to Consolidated Financial Statements.

Liquidity

In the opinion of management, United maintains liquidity that is sufficient to satisfy its depositors’ requirements and the credit needs of its customers. Like all banks, United depends upon its ability to renew maturing deposits and other liabilities on a daily basis and to acquire new funds in a variety of markets. A significant source of funds available to United is “core deposits”. Core deposits include certain demand deposits, statement and special savings and NOW

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accounts. These deposits are relatively stable, and they are the lowest cost source of funds available to United. Short-term borrowings have also been a significant source of funds. These include federal funds purchased and securities sold under agreements to repurchase as well as advances from the FHLB. Repurchase agreements represent funds which are obtained as the result of a competitive bidding process.

Liquid assets are cash and those items readily convertible to cash. All banks must maintain sufficient balances of cash and near-cash items to meet the day-to-day demands of customers and United’s cash needs. Other than cash and due from banks, the available for sale securities portfolio and maturing loans are the primary sources of liquidity.

The goal of liquidity management is to ensure the ability to access funding which enables United to efficiently satisfy the cash flow requirements of depositors and borrowers and meet United’s cash needs. Liquidity is managed by monitoring funds’ availability from a number of primary sources. Substantial funding is available from cash and cash equivalents, unused short-term borrowing and a geographically dispersed network of branches providing access to a diversified and substantial retail deposit market.

Short-term needs can be met through a wide array of outside sources such as correspondent and downstream correspondent federal funds and utilization of Federal Home Loan Bank advances.

Other sources of liquidity available to United to provide long-term as well as short-term funding alternatives, in addition to FHLB advances, are long-term certificates of deposit, lines of credit, borrowings that are secured by bank premises or stock of United’s subsidiaries and issuances of trust preferred securities. In the normal course of business, United through its Asset Liability Committee evaluates these as well as other alternative funding strategies that may be utilized to meet short-term and long-term funding needs.

For the three months ended March 31, 2018, cash of $158.48 million was provided by operating activities due mainly to net income of $61.71 million for the quarter. In addition, proceeds from the sales of mortgage loans in the secondary market exceeded originations by $59.19 million. Net cash of $186.99 million was used in investing activities which was primarily due to $227.11 million of net purchases of investments over proceeds from sales partially offset by $32.09 million of net loan repayments. During the first three months of 2018, net cash of $498.49 million was used in financing activities due primarily to a net repayment of $259.20 million in short-term borrowings, the net withdrawal of $184.10 million in deposits and cash dividends paid of $35.71 million for the quarter. The net effect of the cash flow activities was a decrease in cash and cash equivalents of $527.00 million for the first three months of 2018.

United anticipates it can meet its obligations over the next 12 months and has no material commitments for capital expenditures. There are no known trends, demands, commitments, or events that will result in or that are reasonably likely to result in United’s liquidity increasing or decreasing in any material way. United also has lines of credit available. See Notes 8 and 9 to the accompanying unaudited Notes to Consolidated Financial Statements for more details regarding the amounts available to United under lines of credit.

The Asset Liability Committee monitors liquidity to ascertain that a liquidity position within certain prescribed parameters is maintained. No changes are anticipated in the policies of United’s Asset Liability Committee.

Capital Resources

United’s capital position is financially sound. United seeks to maintain a proper relationship between capital and total assets to support growth and sustain earnings. United has historically generated attractive returns on shareholders’ equity. United is well-capitalized based upon regulatory guidelines. United’s risk-based capital ratio is 14.62% at March 31, 2018 while its Common Equity Tier 1 capital, Tier 1 capital and leverage ratios are 12.38%, 12.38% and 10.48%, respectively. The regulatory requirements for a well-capitalized financial institution are a risk-based capital ratio of 10.0%, a Common Equity Tier 1 capital ratio of 6.5%, a Tier 1 capital ratio of 8.0% and a leverage ratio of 5.0%.

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Total shareholders’ equity was $3.25 billion at March 31, 2018, which was relatively flat from December 31, 2017, increasing $10.78 million or less than 1%. This slight increase was primarily due to the retention of earnings.

United’s equity to assets ratio was 17.46% at March 31, 2018 as compared to 17.00% at December 31, 2017. The primary capital ratio, capital and reserves to total assets and reserves, was 17.80% at March 31, 2018 as compared to 17.34% at December 31, 2017. United’s average equity to average asset ratio was 17.65% for the first quarter of 2018 as compared to 15.66% the first quarter of 2017. All of these financial measurements reflect a financially sound position.

During the first quarter of 2018, United’s Board of Directors declared a cash dividend of $0.34 per share. Total cash dividends declared were $35.75 million for the first quarter of 2018 which was an increase of $8.98 million or 33.50% from dividends declared of $26.78 million for the first quarter of 2017.

Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The objective of United’s Asset Liability Management function is to maintain consistent growth in net interest income within United’s policy guidelines. This objective is accomplished through the management of balance sheet liquidity and interest rate risk exposures due to changes in economic conditions, interest rate levels and customer preferences.

Interest Rate Risk

Management considers interest rate risk to be United’s most significant market risk. Interest rate risk is the exposure to adverse changes in United’s net interest income as a result of changes in interest rates. United’s earnings are largely dependent on the effective management of interest rate risk.

Management of interest rate risk focuses on maintaining consistent growth in net interest income within Board-approved policy limits. United’s Asset/Liability Management Committee (ALCO), which includes senior management representatives and reports to the Board of Directors, monitors and manages interest rate risk to maintain an acceptable level of change to net interest income as a result of changes in interest rates. Policy established for interest rate risk is stated in terms of the change in net interest income over a one-year and two-year horizon given an immediate and sustained increase or decrease in interest rates. The current limits approved by the Board of Directors are structured on a staged basis with each stage requiring specific actions.

United employs a variety of measurement techniques to identify and manage its exposure to changing interest rates. One such technique utilizes an earnings simulation model to analyze the sensitivity of net interest income to movements in interest rates. The model is based on actual cash flows and repricing characteristics for on and off-balance sheet instruments and incorporates market-based assumptions regarding the impact of changing interest rates on the prepayment rate of certain assets and liabilities. The model also includes executive management projections for activity levels in product lines offered by United. Assumptions based on the historical behavior of deposit rates and balances in relation to changes in interest rates are also incorporated into the model. Rate scenarios could involve parallel or nonparallel shifts in the yield curve, depending on historical, current, and expected conditions, as well as the need to capture any material effects of explicit or embedded options. These assumptions are inherently uncertain and, as a result, the model cannot precisely measure net interest income or precisely predict the impact of fluctuations in interest rates on net interest income. Actual results will differ from simulated results due to timing, magnitude and frequency of interest rate changes as well as changes in market conditions and management’s strategies.

Interest sensitive assets and liabilities are defined as those assets or liabilities that mature or are repriced within a designated time frame. The principal function of managing interest rate risk is to maintain an appropriate relationship

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between those assets and liabilities that are sensitive to changing market interest rates. The difference between rate

sensitive assets and rate sensitive liabilities for specified periods of time is known as the “GAP.” Earnings-simulation analysis captures not only the potential of these interest sensitive assets and liabilities to mature or reprice, but also the probability that they will do so. Moreover, earnings-simulation analysis considers the relative sensitivities of these balance sheet items and projects their behavior over an extended period of time. United closely monitors the sensitivity of its assets and liabilities on an on-going basis and projects the effect of various interest rate changes on its net interest margin.

The following table shows United’s estimated earnings sensitivity profile as of March 31, 2018 and December 31, 2017:

Change in Interest Rates (basis points)	Percentage Change in Net Interest Income
	March 31, 2018	December 31, 2017
+200	(0.57%)	(1.22%)
+100	(0.24%)	(0.48%)
-100	(0.03%)	(0.18%)
-200	—	—

At March 31, 2018, given an immediate, sustained 100 basis point upward shock to the yield curve used in the simulation model, net interest income for United is estimated to decrease by 0.24% over one year as compared to a decrease of 0.48% at December 31, 2017. A 200 basis point immediate, sustained upward shock in the yield curve would decrease net interest income by an estimated 0.57% over one year as of March 31, 2018, as compared to a decrease of 1.22% as of December 31, 2017. A 100 basis point immediate, sustained downward shock in the yield curve would decrease net interest income by an estimated 0.03% over one year as of March 31, 2018 as compared to a decrease of 0.18%, over one year as of December 31, 2017. With the federal funds rate at 1.75% at March 31, 2018 and 1.50% at December 31, 2017, management believed a 200 basis point immediate, sustained decline in rates was highly unlikely.

In addition to the one year earnings sensitivity analysis, a two-year analysis is also performed. Compared to the one year analysis, United is projected to show improved performance in year two within the upward rate shock scenarios. Given an immediate, sustained 100 basis point upward shock to the yield curve used in the simulation model, net interest income for United is estimated to increase by 2.06% in year two as of March 31, 2018. A 200 basis point immediate, sustained upward shock in the yield curve would increase net interest income by an estimated 3.81% in year two as of March 31, 2018. A 100 basis point immediate, sustained downward shock in the yield curve would decrease net interest income by an estimated 2.02% in year two as of March 31, 2018.

This analysis does not include the potential increased refinancing activities, which should lessen the negative impact on net income from falling rates. While it is unlikely market rates would immediately move 100 or 200 basis points upward or downward on a sustained basis, this is another tool used by management and the Board of Directors to gauge interest rate risk. All of these estimated changes in net interest income are and were within the policy guidelines established by the Board of Directors.

To further aid in interest rate management, United’s subsidiary bank is a member of the Federal Home Loan Bank (FHLB). The use of FHLB advances provides United with a low risk means of matching maturities of earning assets and interest-bearing funds to achieve a desired interest rate spread over the life of the earning assets. In addition, United uses credit with large regional banks and trust preferred securities to provide funding.

As part of its interest rate risk management strategy, United may use derivative instruments to protect against adverse price or interest rate movements on the value of certain assets or liabilities and on future cash flows. These derivatives commonly consist of interest rate swaps, caps, floors, collars, futures, forward contracts, written and purchased options. Interest rate swaps obligate two parties to exchange one or more payments generally calculated with reference to a fixed or variable rate of interest applied to the notional amount. United accounts for its derivative activities in accordance

with the provisions of ASC topic 815, “Derivatives and Hedging.”

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Extension Risk

A key feature of most mortgage loans is the ability of the borrower to repay principal earlier than scheduled. This is called a prepayment. Prepayments arise primarily due to sale of the underlying property, refinancing, or foreclosure. In general, declining interest rates tend to increase prepayments, and rising interest rates tend to slow prepayments. Like other fixed-income securities, when interest rates rise, the value of mortgage- related securities generally declines. The rate of prepayments on underlying mortgages will affect the price and volatility of mortgage-related securities and may shorten or extend the effective maturity of the security beyond what was anticipated at the time of purchase. If interest rates rise, United’s holdings of mortgage-related securities may experience reduced returns if the borrowers of the underlying mortgages pay off their mortgages later than anticipated. This is generally referred to as extension risk.

At March 31, 2018, United’s mortgage related securities portfolio had an amortized cost of $1.4 billion, of which approximately $866 million or 61% were fixed rate collateralized mortgage obligations (CMOs). These fixed rate CMOs consisted primarily of planned amortization class (PACs), sequential-pay and accretion directed (VADMs) bonds having an average life of approximately 4.3 years and a weighted average yield of 2.57%, under current projected prepayment assumptions. These securities are expected to have very little extension risk in a rising rate environment. Current models show that an immediate, sustained upward shock of 300 basis points, the average life of these securities would only extend to 4.9 years. The projected price decline of the fixed rate CMO portfolio in rates up 300 basis points would be 11.8%, or less than the price decline of a 5- year treasury note. By comparison, the price decline of a 30-year current coupon mortgage backed security (MBS) given an immediate, sustained upward shock of 300 basis points would be approximately 19.4%.

United had approximately $258 million in balloon and other securities with a projected yield of 2.27% and a projected average life of 4.2 years on March 31, 2018. This portfolio consisted primarily of Fannie Mae Delegated Underwriting and Servicing (DUS) mortgage backed securities (MBS) with a weighted average loan age (WALA) of 4.1 years and a weighted average maturity (WAM) of 4.6 years.

United had approximately $114 million in 15-year mortgage backed securities with a projected yield of 2.47% and a projected average life of 3.9 years as of March 31, 2018. This portfolio consisted of seasoned 15-year mortgage paper with a weighted average loan age (WALA) of 4.7 years and a weighted average maturity (WAM) of 10.4 years.

United had approximately $93 million in 20-year mortgage backed securities with a projected yield of 2.78% and a projected average life of 5.4 years on March 31, 2018. This portfolio consisted of seasoned 20-year mortgage paper with a weighted average loan age (WALA) of 5 years and a weighted average maturity (WAM) of 14.6 years.

United had approximately $69 million in 30-year mortgage backed securities with a projected yield of 2.87% and a projected average life of 7.1 years on March 31, 2018. This portfolio consisted of seasoned 30-year mortgage paper and Home Equity Conversion Mortgages with a weighted average loan age (WALA) of 2.3 years and a weighted average maturity (WAM) of 28.3 years.

The remaining 2% of the mortgage related securities portfolio at March 31, 2018, included adjustable rate securities (ARMs), 10-year mortgage backed pass-through securities and other fixed rate mortgage backed securities.

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Item 4. CONTROLS AND PROCEDURES

As of March 31, 2018, an evaluation was performed under the supervision of and with the participation of United’s management, including the Chief Executive Officer (CEO) and Chief Financial Officer (CFO), of the effectiveness of the design and operation of United’s disclosure controls and procedures. Based on that evaluation, United’s management, including the CEO and CFO, concluded that United’s disclosure controls and procedures as of March 31, 2018 were effective in ensuring that information required to be disclosed in the Quarterly Report on Form 10-Q was recorded, processed, summarized and reported within the time period required by the Securities and Exchange Commission’s rules and forms. There have been no changes in United’s internal control over financial reporting that occurred during the quarter ended March 31, 2018, or in other factors that have materially affected or are reasonably likely to materially affect United’s internal control over financial reporting.

80

PART II - OTHER INFORMATION

Item 1. 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.

Item 1A. RISK FACTORS

In addition to the other information set forth in this report, please refer to United’s Annual Report on Form 10-K for the year ended December 31, 2017 for disclosures with respect to United’s risk factors which could materially affect United’s business, financial condition or future results. The risks described in the Annual Report on Form 10-K are not the only risks facing United. Additional risks and uncertainties not currently known to United or that United currently deems to be immaterial also may materially adversely affect United’s business, financial condition and/or operating results. There are no material changes from the risk factors disclosed in United’s Annual Report on Form 10-K for the year ended December 31, 2017.

Item 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

There have been no United equity securities sales during the quarter ended March 31, 2018 that were not registered. The table below includes certain information regarding United’s purchase of its common shares during the quarter ended March 31, 2018:

Period	Total Number of  Shares Purchased (1) (2)		Average Price Paid per Share		Total Number  of Shares Purchased as Part of  Publicly Announced Plans (3)		Maximum Number of Shares  that May Yet be Purchased Under the Plans (3)
1/01 – 1/31/2018		0	$	00.00		0		2,000,000
2/01 – 2/28/2018		5	$	34.81		0		2,000,000
3/01 – 3/31/2018		10,837	$	37.25		0		2,000,000
Total		10,842	$	37.25		0

(1) Includes shares exchanged in connection with the exercise of stock options and the vesting of restricted shares under United’s long-term incentive plans. Shares are purchased or vested pursuant to the terms of the applicable plan and not pursuant to a publicly announced stock repurchase plan. For the quarter ended March 31, 2018 – 10,837 shares at an average price of $37.25 were exchanged by participants in United’s long-term incentive plans.

(2) Includes shares purchased in open market transactions by United for a rabbi trust to provide payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries. For the quarter ended March 31, 2018, the following shares were purchased for the deferred compensation plan: February 2018 – 5 shares at an average price of $34.81.

(3) In August of 2017, United’s Board of Directors approved a repurchase plan to repurchase up to 2 million shares of United’s common stock on the open market (the 2017 Plan). The timing, price and quantity of purchases under the plan are at the discretion of management and the plan may be discontinued, suspended or restarted at any time depending on the facts and circumstances.

81

Item 3. DEFAULTS UPON SENIOR SECURITIES

None.

Item 4. MINE SAFETY DISCLOSURES

None.

Item 5. OTHER INFORMATION

(a) None.

(b) No changes were made to the procedures by which security holders may recommend nominees to United’s Board of Directors.

Item 6. EXHIBITS

Index to exhibits required by Item 601 of Regulation S-K

Exhibit     No.	Description
2.1	Agreement and Plan of Reorganization by and among United Bankshares, UBV Holding Company, LLC and Cardinal Financial Corporation (incorporated into this filing by reference to Exhibit 2.1 to the Form 8-K dated August 17, 2016 and filed August 18, 2016 for United Bankshares, Inc., File No. 0-13322)
3.1	Articles of Incorporation (incorporated into this filing by reference to a Quarterly Report on Form 10-Q dated March 31, 2017 and filed May 9, 2017 for United Bankshares, Inc., File No.0-13322)
3.2	Bylaws (incorporated into this filing by reference to a Current Report on Form 8-K dated January 25, 2010 and filed January 29, 2010 for United Bankshares, Inc., File No.0-13322)
31.1	Certification as Adopted Pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002 by Chief Executive Officer (filed herewith)
31.2	Certification as Adopted Pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002 by Chief Financial Officer (filed herewith)
32.1	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section  906 of the Sarbanes-Oxley Act of 2002 by Chief Executive Officer (furnished herewith)
32.2	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section  906 of the Sarbanes-Oxley Act of 2002 by Chief Financial Officer (furnished herewith)
101	Interactive data file (XBRL) (filed herewith)

82

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		UNITED BANKSHARES, INC.
		(Registrant)
Date:	May 9, 2018	/s/    Richard M. Adams
		Richard M. Adams, Chairman of the Board and Chief Executive Officer
Date:	May 9, 2018	/s/    W. Mark Tatterson
		W. Mark Tatterson, Executive Vice President and Chief Financial Officer

83

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Richard M. Adams, certify that:

1. I have reviewed this quarterly report on Form 10-Q of United Bankshares, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	May 9, 2018	/s/ Richard M. Adams
		Richard M. Adams, Chairman of the
		Board and Chief Executive Officer

84

EX-31.2

Exhibit 31.2

CERTIFICATION

I, W. Mark Tatterson, certify that:

1. I have reviewed this quarterly report on Form 10-Q of United Bankshares, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	May 9, 2018	/s/ W. Mark Tatterson
		W. Mark Tatterson, Executive
		Vice President and Chief Financial
		Officer

85

EX-32.1

Exhibit 32.1

CERTIFICATION

Pursuant to 18 U.S.C. § 1350, the undersigned officer of United Bankshares, Inc. (the “Company”), hereby certifies, to such officer’s knowledge, that the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2018 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	May 9, 2018	/s/ Richard M. Adams
		Name: Richard M. Adams
		Title: Chief Executive Officer

86

EX-32.2

Exhibit 32.2

CERTIFICATION

Pursuant to 18 U.S.C. § 1350, the undersigned officer of United Bankshares, Inc. (the “Company”), hereby certifies, to such officer’s knowledge, that the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2018 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	May 9, 2018	/s/ W. Mark Tatterson
		Name: W. Mark Tatterson
		Title: Chief Financial Officer

87

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Trading Symbol	UBSI
Entity Registrant Name	UNITED BANKSHARES INC/WV
Entity Central Index Key	0000729986
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		105,141,385

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets
Cash and due from banks	$ 178,071	$ 196,742
Interest-bearing deposits with other banks	960,308	1,468,636
Federal funds sold	791	789
Total cash and cash equivalents	1,139,170	1,666,167
Securities available for sale at estimated fair value (amortized cost-$2,119,071 at March 31, 2018 and $1,900,684 at December 31, 2017)	2,085,111	1,888,756
Securities held to maturity (estimated fair value-$20,006 at March 31, 2018 and $20,018 at December 31, 2017)	20,405	20,428
Equity securities at estimated fair value	11,160	0
Other investment securities	152,287	162,461
Loans held for sale (at fair value-$192,673 at March 31, 2018 and $263,308 at December 31, 2017)	193,915	265,955
Loans	12,998,435	13,027,337
Less: Unearned income	(14,018)	(15,916)
Loans net of unearned income	12,984,417	13,011,421
Less: Allowance for loan losses	(76,653)	(76,627)
Net loans	12,907,764	12,934,794
Bank premises and equipment	103,009	104,894
Goodwill	1,478,580	1,478,380
Accrued interest receivable	54,815	52,815
Other assets	473,486	484,309
TOTAL ASSETS	18,619,702	19,058,959
Deposits:
Noninterest-bearing	4,344,203	4,294,687
Interest-bearing	9,301,965	9,535,904
Total deposits	13,646,168	13,830,591
Borrowings:
Federal funds purchased	17,615	16,235
Securities sold under agreements to repurchase	250,771	311,352
Federal Home Loan Bank borrowings	1,060,948	1,271,531
Other long-term borrowings	233,961	242,446
Reserve for lending-related commitments	755	679
Accrued expenses and other liabilities	158,171	145,595
TOTAL LIABILITIES	15,368,389	15,818,429
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-105,181,868 and 105,069,821 at March 31, 2018 and December 31, 2017, respectively, including 40,698 and 29,173 shares in treasury at March 31, 2018 and December 31, 2017, respectively	262,955	262,675
Surplus	2,130,092	2,129,077
Retained earnings	924,263	891,816
Accumulated other comprehensive loss	(64,553)	(42,025)
Treasury stock, at cost	(1,444)	(1,013)
TOTAL SHAREHOLDERS' EQUITY	3,251,313	3,240,530
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 18,619,702	$ 19,058,959

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Securities available for sale, amortized cost	$ 2,119,071	$ 1,900,684
Securities held to maturity	20,006	20,018
Loans held for sale at fair value	$ 192,673	$ 263,308
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 2.50	$ 2.50
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	105,181,868	105,069,821
Common stock, shares in treasury	40,698	29,173

XML

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest income
Interest and fees on loans	$ 148,928	$ 108,942
Interest on federal funds sold and other short-term investments	4,917	2,686
Interest and dividends on securities:
Taxable	11,875	8,011
Tax-exempt	1,465	1,119
Total interest income	167,185	120,758
Interest expense
Interest on deposits	15,657	8,468
Interest on short-term borrowings	421	304
Interest on long-term borrowings	7,064	4,366
Total interest expense	23,142	13,138
Net interest income	144,043	107,620
Provision for loan losses	5,178	5,899
Net interest income after provision for loan losses	138,865	101,721
Other income
Fees from trust services	3,091	3,030
Fees from brokerage services	2,224	1,856
Fees from deposit services	8,230	7,706
Bankcard fees and merchant discounts	1,356	884
Other service charges, commissions, and fees	509	477
Income from bank-owned life insurance	1,254	1,217
Income from mortgage banking activities	14,570	675
Net investment securities (losses) gains	(485)	3,940
Other income	443	361
Total other income	31,192	20,146
Other expense
Employee compensation	40,836	24,033
Employee benefits	9,571	6,903
Net occupancy expense	9,427	6,784
Other real estate owned (OREO) expense	946	1,414
Equipment expense	3,157	1,965
Data processing expense	5,850	4,043
Bankcard processing expense	466	465
FDIC insurance expense	1,848	1,751
Other expense	18,351	15,484
Total other expense	90,452	62,842
Income before income taxes	79,605	59,025
Income taxes	17,899	20,216
Net income	$ 61,706	$ 38,809
Earnings per common share:
Basic	$ 0.59	$ 0.48
Diluted	0.59	0.48
Dividends per common share	$ 0.34	$ 0.33
Average outstanding shares:
Basic	104,859,427	80,902,368
Diluted	105,162,858	81,306,540

XML

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 61,706	$ 38,809
Change in net unrealized gain on available-for-sale (AFS) securities, net of tax	(16,773)	3,378
Accretion of the net unrealized loss on the transfer of AFS securities to held-to-maturity (HTM) securities, net of tax	1	1
Change in defined benefit pension plan, net of tax	733	695
Comprehensive income, net of tax	$ 45,667	$ 42,883

XML

Consolidated Statement of Changes in Shareholders' Equity (Unaudited) - 3 months ended Mar. 31, 2018 - USD ($) $ in Thousands	Total	Common Stock [Member]	Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]
Beginning Balance at Dec. 31, 2017	$ 3,240,530	$ 262,675	$ 2,129,077	$ 891,816	$ (42,025)	$ (1,013)
Beginning Balance, shares at Dec. 31, 2017		105,069,821
Comprehensive income:
Net income	61,706	$ 0	0	61,706	0	0
Other comprehensive income, net of tax	(16,039)	0	0	0	(16,039)	0
Total comprehensive income, net of tax	45,667
Stock based compensation expense	968	0	968	0	0	0
Purchase of treasury stock	(404)	0	0	0	0	(404)
Cash dividends	(35,748)			(35,748)	0	0
Grant of restricted stock	0	$ 243	(243)	0	0	0
Grant of restricted stock, shares		97,004
Forfeiture of restricted stock	0	$ 0	27	0	0	(27)
Common stock options exercised	$ 300	$ 37	263	0	0	0
Common stock options exercised, shares	15,043	15,043
Ending Balance at Mar. 31, 2018	$ 3,251,313	$ 262,955	$ 2,130,092	924,263	(64,553)	$ (1,444)
Ending Balance, shares at Mar. 31, 2018		105,181,868
Cumulative effect of adopting Accounting Standard Update 2016-01	0			136	(136)
Reclass due to adopting Accounting Standard Update 2018-02	$ 0			$ 6,353	$ (6,353)

XML

Consolidated Statement of Changes in Shareholders' Equity (Unaudited) (Parenthetical)	3 Months Ended
	Mar. 31, 2018 $ / shares shares
Cash dividends per share | $ / shares	$ 0.34
Common stock options exercised, shares	15,043
Common Stock [Member]
Purchase of treasury stock, shares	10,842
Grant of restricted stock, shares	97,004
Forfeiture of restricted stock, shares	683
Common stock options exercised, shares	15,043
Retained Earnings [Member]
Cash dividends per share | $ / shares	$ 0.34
Treasury Stock [Member]
Purchase of treasury stock, shares	10,842

XML

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Cash Flows [Abstract]
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 158,484	$ 64,973
INVESTING ACTIVITIES
Proceeds from maturities and calls of securities held to maturity	1	2,886
Proceeds from sales of securities available for sale	36,850	7,376
Proceeds from maturities and calls of securities available for sale	66,067	91,422
Purchases of securities available for sale	(330,031)	(64,335)
Proceeds from sales of equity securities	159	0
Purchases of equity securities	(181)	0
Proceeds from sales and redemptions of other investment securities	9,046	7,465
Purchases of other investment securities	(3,672)	(6,227)
Purchases of bank premises and equipment	(756)	(1,680)
Proceeds from sales of bank premises and equipment	1	0
Proceeds from the sales of OREO properties	3,433	1,558
Net change in loans	32,091	(70,415)
NET CASH USED IN INVESTING ACTIVITIES	(186,992)	(31,950)
FINANCING ACTIVITIES
Cash dividends paid	(35,713)	(25,311)
Acquisition of treasury stock	(404)	0
Proceeds from exercise of stock options	300	324
Repayment of long-term Federal Home Loan Bank borrowings	(625,000)	(805,176)
Proceeds from issuance of long-term Federal Home Loan Bank borrowings	615,000	795,000
Repayment of trust preferred issuance	(9,374)	0
Changes in:
Deposits	(184,097)	265,509
Federal funds purchased, securities sold under agreements to repurchase and other short-term borrowings	(259,201)	(30,568)
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES	(498,489)	199,778
(Decrease) Increase in cash and cash equivalents	(526,997)	232,801
Cash and cash equivalents at beginning of year	1,666,167	1,434,527
Cash and cash equivalents at end of period	1,139,170	1,667,328
Noncash investing activities:
Transfers of loans to OREO	$ 527	$ 951

XML

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2018

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 and Article 10 of Regulation S-X. Accordingly, the financial statements do not contain all of the information and footnotes required by accounting principles generally accepted in the United States. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. The financial statements presented as of March 31, 2018 and 2017 and for the three-month periods then ended have not been audited. The consolidated balance sheet as of December 31, 2017 has been extracted from the audited financial statements included in United’s 2017 Annual Report to Shareholders. The accounting and reporting policies followed in the presentation of these financial statements are consistent with those applied in the preparation of the 2017 Annual Report of United on Form 10-K. To conform to the 2018 presentation, certain reclassifications have been made to prior period amounts, which had no impact on net income, comprehensive income, or stockholders’ equity. In the opinion of management, all adjustments necessary for a fair presentation of financial position and results of operations for the interim periods have been made. Such adjustments are of a normal and recurring nature.

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 February 2018, the FASB issued ASU No. 2018-03, “Technical Corrections and Improvements to Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.” ASU 2018-03 clarifies that entities that use the measurement alternative for equity securities without readily determinable fair values can change its measurement approach to fair value. This election is irrevocable and will apply to all future purchases of identical or similar investments of the same issuer. The amended guidance also clarifies that adjustments made under the measurement alternative should reflect the fair value of the security as of the date that an observable transaction took place rather than the current reporting date. Entities will use the prospective transition approach only for securities they elect to measure using the measurement alternative. ASU No. 2018-03 is effective for interim and annual reporting periods beginning after December 15, 2017; early adoption is permitted. ASU No. 2018-03 did not have a material impact on the Company’s financial condition or results of operations.

In February 2018, the FASB issued ASU No. 2018-02, “Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income,” to help organizations address certain stranded income tax effects in accumulated other comprehensive income (AOCI) resulting from the Tax Cuts and Jobs Act (the “Tax Act”). This ASU provides financial statement preparers with an option to reclassify stranded tax effects within AOCI to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Act (or portion thereof) is recorded. The amendments are effective for all organizations for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. Organizations should apply the proposed amendments either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Act is recognized. United adopted ASU No. 2018-02 in the first quarter of 2018 and reclassified $6,353 of stranded income tax effected amounts in AOCI to retained earnings.

In August 2017, the FASB issued ASU No. 2017-12, “Targeting Improvement to Accounting for Hedging Activities.” This ASU amends ASC 815 and its objectives are to improve the transparency and understandability of information conveyed to financial statement users about an entity’s risk management activities by better aligning the entity’s financial reporting for hedging relationships with those risk management activities and reduce the complexity and simplify the application of hedge accounting by preparers. ASU No. 2017-12 is effective for interim and annual reporting periods beginning after December 15, 2018; early adoption is permitted. ASU No. 2017-12 is not expected to have a material impact on the Company’s financial condition or results of operations.

In July 2017, the FASB issued ASU No. 2017-11, “Part I, Accounting for Certain Financial Instruments with Down Round Features and Part II, Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling interests with a Scope Exception.” Part I of this ASU simplifies the accounting for financial instruments that include down round features while the amendments in Part II, which do not have an accounting effect, address the difficulty of navigating the guidance in ASC 480, “Distinguishing Liabilities from Equity”, due to the existence of extensive pending content in the Codification. ASU No. 2017-11 is effective for interim and annual reporting periods beginning after December 15, 2018. ASU No. 2017-11 is not expected to have a material impact on the Company’s financial condition or results of operations.

In May 2017, the FASB issued ASU No. 2017-09, “Stock Compensation, Scope of Modification Accounting.” This ASU clarifies when changes to the terms of conditions of a share-based payment award must be accounted for as modifications. Companies will apply the modification accounting guidance if the value, vesting conditions or classification of the award changes. The new guidance should reduce diversity in practice and result in fewer changes to the terms of an award being accounted for as modifications, as the guidance will allow companies to make certain non-substantive changes to awards without accounting for them as modifications. It does not change the accounting for modifications. ASU No. 2017-09 is effective for interim and annual reporting periods beginning after December 15, 2017; early adoption is permitted. ASU No. 2017-09 did not have a material impact on the Company’s financial condition or results of operations.

In March 2017, the FASB issued ASU 2017-07, “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” ASU 2017-07 amends ASC 715, “Compensation - Retirement Benefits” and will change how employers that sponsor defined benefit pension and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. Employers will present the service cost component of net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization in assets. Employers will present the other components of the net periodic benefit cost separately from the line item that includes the service cost and outside of any subtotal of operating income, if one is presented. These components will not be eligible for capitalization in assets. ASU 2017-07 was effective for United on January 1, 2018. The adoption of ASU 2017-07 had a slight change in presentation but did not materially impact the Company’s financial condition or results of operations. United used amounts previously disclosed in its Employee Benefits Plan footnote (Note 14) to retrospectively adjust prior period amounts of employee compensation and employee benefits within United’s Consolidated Statements of Income.

In January 2017, the FASB issued ASU 2017-04, “Intangibles – Goodwill and Other (topic 350).” ASU 2017-04 eliminates the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge. Instead, entities will record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value. ASU 2017-04 is effective for United on January 1, 2020, with early adoption permitted, and management is currently evaluating the possible impact this standard may have on the Company’s financial condition or results of operations.

In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business.” ASU 2017-01 changes the definition of a business to assist entities with evaluation when a set of transferred assets and activities is a business. The guidance requires an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets. The guidance also requires a business to include at least one substantive process and narrows the definition of outputs by more closely aligning it with how outputs are described in ASC 606. ASU 2017-01 was effective for United on January 1, 2018 and did not have a material impact on the Company’s financial condition or results of operations.

In August 2016, the FASB issued ASU 2016-15, “Classification of Certain Cash Receipts and Cash Payments.” ASU 2016-15 amends ASC topic 230 to add and clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows as a result of diversity in practice and in certain circumstances, financial statement restatements. Entities should apply ASU 2016-15 using a retrospective transition method to each period presented. ASU 2016-15 was effective for United on January 1, 2018 and did not have a material impact on the Company’s financial condition or results of operations.

In June 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses.” ASU 2016-13 changes the impairment model for most financial assets and certain other instruments that aren’t measured at fair value through net income. The standard will replace today’s “incurred loss” approach with an “expected loss” model for instruments measured at amortized cost and require entities to record allowances for available-for-sale debt securities rather than reduce the carrying amount under the current other-than-temporary impairment (OTTI) model. ASU 2016-13 also simplifies the accounting model for purchased credit-impaired debt securities and loans. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. ASU 2016-13 is effective for United on January 1, 2020, with early adoption permitted, and management is currently evaluating the possible impact this standard may have on the Company’s financial condition or results of operations.

In March 2016, the FASB issued ASU 2016-09, “Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.” ASU 2016-09 will change certain aspects of accounting for share-based payments to employees. The new guidance will, amongst other things, require all income tax effects of awards to be recognized in the income statement when the awards vest or are settled. The requirement to report those income tax effects in earnings was applied to settlements occurring on or after January 1, 2017 and the impact of applying that guidance reduced reporting income tax expense by $1,048 for the year of 2017. ASU 2016-09 also allows an employer to repurchase more of an employee’s shares than it could previously for tax withholding purposes without triggering liability accounting and make a policy election to account for forfeitures as they occur. The Company will continue to estimate the number of awards expected to be forfeited and adjust the estimate when it is no longer probable that the employee will fulfill the service condition, as was previously required. ASU 2016-09 also requires that all income tax-related cash flows resulting from share-based payments be reported as operating activities in the statement of cash flows. Previously, income tax benefits at settlement of an award were reported as a reduction to operating cash flows and an increase to financing cash flows to the extent that those benefits exceeded the income tax benefits reported in earnings during the award’s vesting period. The adoption of ASU 2016-09 did not have a material impact on the Company’s financial condition or results of operations.

In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)”. ASU 2016-02 includes a lessee accounting model that recognizes two types of leases, finance leases and operating leases, while lessor accounting will remain largely unchanged from the current GAAP. ASU 2016-02 requires, amongst other things, that a lessee recognize on the balance sheet a right-of-use asset and a lease liability for leases, which has not yet been quantified, with terms of more than twelve months. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee will depend on its classification as a finance or operating lease. ASU 2016-02 is effective for United on January 1, 2019. The Company is currently assessing the impact of the adoption of ASU 2016-02 on the Company’s results of operations, financial position and cash flows. Significant implementation matters being addressed by the Company include gathering, documenting and analyzing all leases to assess the impact on accounting and disclosures, evaluating and implementing a third-party lease accounting software solution, assessing the impact to its internal controls over financial reporting, and documenting the new lease accounting process.

In January 2016, the FASB issued ASU 2016-01, “Financial Instruments Overall: Recognition and Measurement of Financial Assets and Financial Liabilities.” ASU 2016-01 makes changes to the classification and measurement of investments in equity securities, the presentation of certain fair value changes for financial liabilities measured at fair value under the fair value option and disclosure of fair value of instruments. In addition, ASU 2016-01 clarifies guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. ASU 2016-01 was adopted by United on January 1, 2018 and did not have a significant impact on the Company’s financial condition or results of operations.

In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 supersedes the revenue recognition requirements in ASC topic 605, “Revenue Recognition”, and most industry-specific guidance throughout the ASC. The amendments require an entity to recognize revenue upon the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. The new revenue recognition standard sets forth a five-step principle-based approach for determining revenue recognition. For United, revenue is comprised of net interest income and noninterest income. As the standard does not apply to revenue associated with financial instruments, net interest income, gains and losses from securities, income from bank-owned life insurance (BOLI) and income from mortgage banking activities are not impacted by the standard. Based on a review and evaluation of a number of revenue contracts, United’s management determined that ASU 2014-09 impacts certain recurring revenue streams related to noninterest income such as fees from trust and brokerage services. However, based on an assessment of these revenue streams under the standard, management concluded that ASU 2014-09 does not have a material impact on the Company’s financial condition or results of operations. In addition, in the Company’s evaluation of the nature of its contracts with customers, United has determined that further disaggregation of revenue from contracts with customers into more granular categories beyond those presented in the Consolidated Statements of Income was not necessary. ASU 2014-09 was adopted by United on January 1, 2018 using the modified-retrospective transition method. No cumulative effect adjustment was made to the opening balance of retained earnings because the amount was considered immaterial. The impact of ASU 2014-09 for the first three months of 2018 were also immaterial to United’s consolidated financial position, results of operations, shareholders’ equity, cash flows and disclosures.

Descriptions of our revenue-generating activities that are within the scope of ASC topic 606, which are presented in our Consolidated Statements of Income as components of Other Income are discussed below. There are no significant judgements relating to the amount and timing of revenue recognition for those revenue streams under the scope of ASC topic 606.

Fees from Trust Services

Revenue from trust services primarily is comprised of fees earned from the management and administration of trusts and other customer assets. Trust services include custody of assets, investment management, escrow services, and similar fiduciary activities. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days after month end through a direct charge to customers’ accounts.

Fees from Brokerage Services

Revenue from brokerage services are recorded as the income is earned at the time the related service is performed. In return for such services, the Company charges a commission for the sales of various securities products primarily consisting of investment company shares, annuity products, and corporate debt and equity securities, for its selling and administrative efforts. For account supervision, advisory, and administrative services, revenue is recognized over a period of time as earned based on customer account balances and activity.

Fees from Deposit Services

Service charges on deposit accounts consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, check orders, ATM activity fees, debit card fees, and other deposit account related fees. Revenue is recognized when our performance obligation is completed which is generally monthly for account maintenance services or when a transaction has been completed (ATM or debit card activity).

Bankcard Fees and Merchant Discounts

Bankcard fees and merchant discounts are primarily comprised of credit card income and merchant services income. Credit card income is primarily comprised of interchange fees earned whenever the Company’s credit cards are processed through card payment networks such as Visa. Merchant services income mainly represents fees charged to merchants to process their credit card transactions. The Company’s performance obligation for bankcard fees and exchange are largely satisfied, and related revenue recognized at the time services are rendered. Payment is typically received immediately or in the following month.

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Mergers and Acquisitions

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Mergers and Acquisitions

2. MERGERS AND ACQUISITIONS

Cardinal Financial Corporation

On April 21, 2017 (Cardinal Acquisition Date), United acquired 100% of the outstanding common stock of Cardinal Financial Corporation (Cardinal), headquartered in Tysons Corner, Virginia. The acquisition of Cardinal expands United’s existing footprint in the Washington, D.C. Metropolitan Statistical Area. At consummation, Cardinal had assets of $4,136,008, loans of $3,313,033 and deposits of $3,344,740. Cardinal also operated George Mason Mortgage, LLC (George Mason), a residential mortgage lending company based in Fairfax, Virginia with offices located in Virginia, Maryland, North Carolina, South Carolina and the District of Columbia. As a result of the merger, George Mason became an indirectly-owned subsidiary of United.

The merger was accounted for under the acquisition method of accounting. The results of operations of Cardinal are included in the consolidated results of operations from the Cardinal Acquisition Date.

The aggregate purchase price was approximately $975,254, including common stock valued at $972,499, stock options assumed valued at $2,741, and cash paid for fractional shares of $14. The number of shares issued in the transaction was 23,690,589, which were valued based on the closing market price of $41.05 for United’s common shares on April 21, 2017. The preliminary purchase price has been allocated to the identifiable tangible and intangible assets resulting in preliminary additions to goodwill, core deposit intangibles and the George Mason trade name intangible of $613,486, $28,724 and $1,080, respectively. The core deposit intangibles are expected to be amortized over ten years. The George Mason trade name provides a source of market recognition to attract potential clients and retain existing relationships. United believes the George Mason trade name provides a competitive advantage and is likely going to be used into perpetuity and thus will not be subject to amortization, but rather be evaluated for impairment.

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 Cardinal 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 Cardinal. As a result of the merger, United recorded preliminary fair value discounts of $144,434 on the loans acquired, $2,281 on leases and $8,738 on trust preferred issuances, respectively, and premiums of $4,408 on land acquired, $5,072 on interest-bearing deposits and $10,740 on long-term FHLB advances, respectively. The remaining discount and premium amounts are being accreted or amortized on an accelerated or straight-line basis over each asset’s or liability’s estimated remaining life at the time of acquisition except for loans and land. The discount on loans will be accreted into income based on the effective yield method. The premium on land will not be amortized. At March 31, 2018, the discounts on leases and trust preferred issuances had an average estimated remaining life of 5.5 years and 16.47 years, respectively, and the premiums on the interest-bearing deposits and the FHLB advances each had an average estimated remaining life of 4.5 years and 4.31 years, respectively. United assumed approximately $1,825 of liabilities to provide severance benefits to terminated employees of Cardinal, which has no remaining balance as of March 31, 2018. The estimated fair values of the acquired assets and assumed liabilities, including identifiable intangible assets and goodwill are preliminary as of March 31, 2018 and are subject to refinement as additional information relative to closing date fair values becomes available. Any subsequent adjustments to the fair values of acquired assets and liabilities assumed, identifiable intangible assets, or other purchase accounting adjustments will result in adjustments to goodwill within the measurement period following the date of acquisition.

In many cases, determining the estimated fair value of the acquired assets and assumed liabilities required United to estimate cash flows expected to result from those assets and liabilities and to discount those cash flows at appropriate rates of interest. The most significant of those determinations related to the fair value of acquired loans. The fair value of the acquired loans was based on the present value of the expected cash flows. Periodic principal and interest cash flows were adjusted for expected losses and prepayments, then discounted to determine the present value and summed to arrive at the estimated fair value. For such loans, the excess of cash flows expected at acquisition over the estimated fair value is recognized as interest income over the remaining lives of the loans. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition reflects the impact of estimated credit losses and other factors, such as prepayments. In accordance with GAAP, there was no carry-over of Cardinal’s previously established allowance for loan losses.

The acquired loans were divided into loans with evidence of credit quality deterioration, which are accounted for under ASC topic 310-30 (acquired impaired) and loans that do not meet this criteria, which are accounted for under ASC topic 310-20 (acquired performing). Acquired impaired loans have experienced a deterioration of credit quality from origination to acquisition for which it is probable that United will be unable to collect all contractually required payments receivable, including both principal and interest. Subsequent decreases in the expected cash flows require United to evaluate the need for additions to the Company’s allowance for credit losses. Subsequent improvements in expected cash flows generally result in the recognition of additional interest income over the then remaining lives of the loans.

In conjunction with the Cardinal merger, the acquired loan portfolio was accounted for at fair value as follows:

	April 21, 2017
Contractually required principal and interest at acquisition	$	4,211,734
Contractual cash flows not expected to be collected		(56,176	)
Expected cash flows at acquisition		4,155,558
Interest component of expected cash flows		(986,959	)
Basis in acquired loans at acquisition – estimated fair value	$	3,168,599

Included in the above table is information related to acquired impaired loans. Specifically, contractually required principal and interest, cash flows expected to be collected and estimated fair value of acquired impaired loans were $132,837, $108,275, and $86,696, respectively.

The consideration paid for Cardinal’s common equity and the preliminary amounts of acquired identifiable assets and liabilities assumed as of the Cardinal Acquisition Date were as follows:

Purchase price:
Value of common shares issued (23,690,589 shares)	$	972,499
Fair value of stock options assumed		2,741
Cash for fractional shares		14
Total purchase price		975,254
Identifiable assets:
Cash and cash equivalents		44,545
Investment securities		395,829
Loans held for sale		271,301
Loans		3,168,599
Premises and equipment		24,208
Core deposit intangibles		28,724
George Mason trade name intangible		1,080
Other assets		135,383
Total identifiable assets	$	4,069,669
Identifiable liabilities:
Deposits	$	3,349,812
Short-term borrowings		96,215
Long-term borrowings		220,119
Unfavorable lease liability		2,281
Other liabilities		39,474
Total identifiable liabilities		3,707,901
Preliminary fair value of net assets acquired including identifiable intangible assets		361,768
Preliminary resulting goodwill	$	613,486

The operating results of United for the three months ended March 31, 2018 include operating results of acquired assets and assumed liabilities subsequent to the Cardinal Acquisition Date. The operations of United’s metropolitan Washington D.C. geographic area, which primarily includes the acquired operations of Cardinal, provided $340,632 in total revenues, which represents net interest income plus other income, and $157,852 in net income from the period from the Cardinal Acquisition Date to March 31, 2018. Cardinal’s results of operations prior to the Cardinal Acquisition Date are not included in United’s consolidated financial statements.

The following table presents certain unaudited pro forma information for the results of operations for the three months ended March 31, 2017, as if the Cardinal merger had occurred on January 1, 2017. These results combine the historical results of Cardinal 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 Cardinal’s provision for credit losses for the three months ended March 31, 2017 that may not have been necessary had the acquired loans been recorded at fair value as of the beginning of 2017. 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, 2017
Total Revenues (1)	$	191,052
Net Income		54,710

⁽¹⁾  Represents net interest income plus other income

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Investment Securities

3 Months Ended

Mar. 31, 2018

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 and estimated fair values of securities available for sale are summarized as follows.

	March 31, 2018
			Gross		Gross		Estimated		Cumulative
	Amortized		Unrealized		Unrealized		Fair		OTTI in
	Cost		Gains		Losses		Value		AOCI (1)
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	163,718	$	237	$	849	$	163,106	$	0
State and political subdivisions		297,481		1,300		5,069		293,712		0
Residential mortgage-backed securities
Agency		934,557		993		20,003		915,547		0
Non-agency		4,665		501		0		5,166		86
Commercial mortgage-backed securities
Agency		485,851		281		9,353		476,779		0
Asset-backed securities		146,774		285		475		146,584		0
Trust preferred collateralized debt obligations		9,192		0		1,128		8,064		2,586
Single issue trust preferred securities		13,433		327		614		13,146		0
Other corporate securities		63,400		337		730		63,007		0
Total	$	2,119,071	$	4,261	$	38,221	$	2,085,111	$	2,672
	December 31, 2017
			Gross		Gross		Estimated		Cumulative
	Amortized		Unrealized		Unrealized		Fair		OTTI in
	Cost		Gains		Losses		Value		AOCI (1)
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	114,735	$	385	$	362	$	114,758	$	0
State and political subdivisions		303,101		3,197		2,429		303,869		0
Residential mortgage-backed securities
Agency		821,857		2,096		9,360		814,593		0
Non-agency		4,969		543		0		5,512		86
Commercial mortgage-backed securities
Agency		457,107		1,059		3,309		454,857		0
Asset-backed securities		109,829		148		7		109,970		0
Trust preferred collateralized debt obligations		37,856		542		4,129		34,269		20,770
Single issue trust preferred securities		13,417		368		1,225		12,560		0
Other corporate securities		28,101		407		18		28,490		0
Marketable equity securities		9,712		179		13		9,878		0
Total	$	1,900,684	$	8,924	$	20,852	$	1,888,756	$	20,856

(1) Non-credit related other-than-temporary impairment in accumulated other comprehensive income. Amounts are before-tax.

The following is a summary of securities available-for-sale which were in an unrealized loss position at March 31, 2018 and December 31, 2017.

	Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
March 31, 2018
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	65,919	$	722	$	22,751	$	127
State and political subdivisions		137,221		1,584		55,674		3,485
Residential mortgage-backed securities
Agency		682,082		13,128		172,052		6,875
Non-agency		0		0		0		0
Commercial mortgage-backed securities
Agency		391,087		7,961		60,595		1,392
Asset-backed securities		56,833		475		0		0
Trust preferred collateralized debt obligations		0		0		5,049		1,128
Single issue trust preferred securities		0		0		5,100		614
Other corporate securities		41,634		730		0		0
Total	$	1,374,776	$	24,600	$	321,221	$	13,621
	Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
December 31, 2017
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	36,678	$	230	$	22,920	$	132
State and political subdivisions		82,896		566		59,432		1,863
Residential mortgage-backed securities
Agency		460,414		4,621		182,482		4,739
Non-agency		0		0		0		0
Commercial mortgage-backed securities
Agency		282,858		2,386		70,763		923
Asset-backed securities		27,931		7		0		0
Trust preferred collateralized debt obligations		0		0		28,629		4,129
Single issue trust preferred securities		0		0		4,485		1,225
Other corporate securities		6,975		18		0		0
Marketable equity securities		0		0		363		13
Total	$	897,752	$	7,828	$	369,074	$	13,024

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 those sales and calls. Gains or losses on sales and calls of available for sale securities were recognized by the specific identification method. The realized losses relate to sales of securities within a rabbi trust for the payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries.

	Three Months Ended March  31
	2018		2017
Proceeds from sales and calls	$	99,703	$	98,798
Gross realized gains		1,163		214
Gross realized losses		1,312		0

At March 31, 2018, gross unrealized losses on available for sale securities were $38,221 on 635 securities of a total portfolio of 870 available for sale securities. Securities in an unrealized loss position at March 31, 2018 consisted primarily of trust preferred collateralized debt obligations (Trup Cdos), single issue trust preferred securities, state and political subdivision securities, and agency commercial and residential mortgage-backed securities. The Trup Cdos and the single issue trust preferred securities relate to securities of financial institutions. The state and political subdivisions securities relate to securities issued by various municipalities. The agency commercial and residential mortgage-backed securities relate to commercial and residential properties and provide a guaranty of full and timely payments of principal and interest by the issuing agency.

In determining whether or not a security is other-than-temporarily impaired (OTTI), management considered the severity and the duration 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.

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 $297,481 at March 31, 2018. As of March 31, 2018, approximately 77% 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 less than one percent of the portfolio was rated below investment grade as of March 31, 2018. 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 were other-than-temporarily impaired at March 31, 2018.

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 $1,420,408 at March 31, 2018. Of the $1,420,408 amount, $485,851 was related to agency commercial mortgage-backed securities and $934,557 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 were other-than-temporarily impaired at March 31, 2018.

Non-agency residential mortgage-backed securities

United’s non-agency residential mortgage-backed securities portfolio relates to securities of various private label issuers. The total amortized cost of available for sale non-agency residential mortgage-backed securities was $4,665 at March 31, 2018. Of the $4,665 amount, $473 thousand was rated above investment grade and $4,192 was rated below investment grade. The entire portfolio of the non-agency residential mortgage-backed securities are either the senior or super-senior tranches of their respective structure. Based upon management’s analysis and judgment, it was determined that none of the non-agency mortgage-backed securities were other-than-temporarily impaired at March 31, 2018.

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). 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 2018, it was determined that none of the single issue trust preferred securities were other-than-temporarily impaired. 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, 2018 consisted of $7,719 in investment grade bonds and $5,714 in unrated bonds. The investment grade bonds were rated either Baa3 or BBB-. All of the unrated bonds were in an unrealized loss position for twelve months or longer as of March 31, 2018.

Trust preferred collateralized debt obligations (Trup Cdos)

The total amortized cost balance of United’s Trup Cdo portfolio was $9,192 as of March 31, 2018. Compared to the prior quarter, the total amortized cost balance declined by $28,664 due mainly to the sale of seven securities totaling $25,315, and the redemption of one security at par in the amount of $3,300. Of the remaining $9,192, one additional security totaling $3,016 was redeemed at par on April 3, 2018.

For any securities in an unrealized loss position, the Company first assesses its intentions regarding any sale of securities as well as the likelihood that it would be required to sell prior to recovery of the amortized cost. As of March 31, 2018, the Company has determined that it does not intend to sell any Trup Cdo and that it is not more likely than not that the Company will be required to sell such securities before recovery of their amortized cost.

To determine a net realizable value and assess whether other-than-temporary impairment existed, management performed detailed cash flow analysis to determine whether, in management’s judgment, it was more likely that United would not recover the entire amortized cost basis of the security. Except for the debt securities that have already been deemed to be other-than-temporarily impaired, management does not believe any other individual security with an unrealized loss as of March 31, 2018 is other-than-temporarily impaired.

Corporate securities

As of March 31, 2018, United’s Corporate securities portfolio had a total amortized cost balance of $63,400. The majority of the portfolio consisted of debt issuances of corporations representing a variety of industries, including financial institutions. Of the $63,400, 67% was investment grade rated and 33% was unrated. For corporate securities, management has evaluated the near-term prospects of the investment in relation to the severity and duration of any impairment and based on that evaluation, management determined that no corporate securities were other-than-temporarily impaired at March 31, 2018.

Below is a progression of the credit losses on securities which United has recorded other-than-temporary charges. These charges were recorded through earnings and other comprehensive income.

	Three Months Ended March  31
	2018			2017
Balance of cumulative credit losses at beginning of period	$	18,060		$	22,162
Additions for credit losses recognized in earnings during the period:
Additional credit losses on securities for which OTTI was previously recognized		0			0
Reductions for securities sold or paid off during the period		(14,861	)		0
Balance of cumulative credit losses at end of period	$	3,199		$	22,162

The amortized cost and estimated fair value of securities available for sale at March 31, 2018 and December 31, 2017 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, 2018				December 31, 2017
			Estimated				Estimated
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	52,863	$	52,753	$	50,311	$	50,212
Due after one year through five years		476,361		471,410		386,039		384,585
Due after five years through ten years		445,861		436,757		400,129		398,208
Due after ten years		1,143,986		1,124,191		1,054,493		1,045,873
Marketable equity securities		0		0		9,712		9,878
Total	$	2,119,071	$	2,085,111	$	1,900,684	$	1,888,756

Securities Held to Maturity

The amortized cost and estimated fair values of securities held to maturity are summarized as follows:

	March 31, 2018
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	5,160	$	241	$	0	$	5,401
State and political subdivisions		5,797		9		0		5,806
Residential mortgage-backed securities
Agency		23		3		0		26
Single issue trust preferred securities		9,405		0		652		8,753
Other corporate securities		20		0		0		20
Total	$	20,405	$	253	$	652	$	20,006
	December 31, 2017
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	5,187	$	308	$	0	$	5,495
State and political subdivisions		5,797		10		0		5,807
Residential mortgage-backed securities
Agency		23		3		0		26
Single issue trust preferred securities		9,401		0		731		8,670
Other corporate securities		20		0		0		20
Total	$	20,428	$	321	$	731	$	20,018

Even though the market value of the held-to-maturity investment portfolio is less than its cost, the unrealized loss has no impact on the net worth or regulatory capital requirements of United. As of March 31, 2018, the Company’s largest held-to-maturity single-issue trust preferred exposure was to SunTrust Bank ($7,428). The two held-to-maturity single-issue trust preferred exposures with at least one rating below investment grade included SunTrust Bank ($7,428) and Royal Bank of Scotland ($976).

There were no gross realized gains or losses on calls and sales of held to maturity securities included in earnings for the first quarter of 2018 and 2017.

The amortized cost and estimated fair value of debt securities held to maturity at March 31, 2018 and December 31, 2017 by contractual maturity are shown below. Expected maturities may differ from contractual maturities because the issuers may have the right to call or prepay obligations without penalties.

	March 31, 2018				December 31, 2017
			Estimated				Estimated
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	0	$	0	$	0	$	0
Due after one year through five years		9,318		9,566		9,344		9,660
Due after five years through ten years		8,091		7,618		5,663		5,343
Due after ten years		2,996		2,822		5,421		5,015
Total	$	20,405	$	20,006	$	20,428	$	20,018

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 $11,160 at March 31, 2018. Prior to March 31, 2018 and the adoption of ASU 2016-01, equity securities were included in available for sale securities.

	Three Months Ended March  31, 2018
Net gains (losses) recognized during the period	$	(36	)
Net gains (losses) recognized during the period on equity securities sold		2
Unrealized gains recognized during the period on equity securities still held at period end		39
Unrealized losses recognized during the period on equity securities still held at period end		77

Other investment securities

During the first quarter of 2018, United evaluated all of its cost method investments to determine if certain events or changes in circumstances during the first quarter of 2018 had a significant adverse effect on the fair value of any of its cost method securities. United determined that there was one security that experienced an adverse event during the first quarter. Total impairment of $300 was recognized on this security. With the exception of this one security, 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 $1,612,649 and $1,403,565 at March 31, 2018 and December 31, 2017, respectively.

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Loans

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Loans

4. LOANS

Major classes of loans are as follows:

	March 31, 2018		December 31, 2017
Commercial, financial and agricultural:
Owner-occupied commercial real estate	$	1,366,980	$	1,361,629
Nonowner-occupied commercial real estate		4,426,776		4,451,298
Other commercial loans		1,952,322		1,998,979
Total commercial, financial & agricultural		7,746,078		7,811,906
Residential real estate		3,065,990		2,996,171
Construction & land development		1,433,125		1,504,907
Consumer:
Bankcard		9,372		10,314
Other consumer		743,870		704,039
Total gross loans	$	12,998,435	$	13,027,337

The table above does not include loans held for sale of $193,915 and $265,955 at March 31, 2018 and December 31, 2017, respectively. Loans held for sale consist of single-family residential real estate loans originated for sale in the secondary market.

The outstanding balances in the table above include previously acquired impaired loans with a recorded investment of $189,675 or 1.46% of total gross loans at March 31, 2018 and $210,521 or 1.62% of total gross loans at December 31, 2017. The contractual principal in these acquired impaired loans was $253,827 and $285,964 at March 31, 2018 and December 31, 2017, respectively. The balances above do not include future accretable net interest (i.e. the difference between the undiscounted expected cash flows and the recorded investment in the loan) on the acquired impaired loans.

Activity for the accretable yield for the first three months of 2018 follows:

Accretable yield at the beginning of the period	$	39,098
Accretion (including cash recoveries)		(4,053	)
Additions		0
Net reclassifications to accretable from non-accretable		4,493
Disposals (including maturities, foreclosures, and charge-offs)		(1,948	)
Accretable yield at the end of the period	$	37,590

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 $35,777 and $36,360 at March 31, 2018 and December 31, 2017, respectively.

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Credit Quality

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Credit Quality

5. CREDIT QUALITY

Management monitors the credit quality of its loans on an ongoing basis. Measurement of delinquency and past due status are based on the contractual terms of each loan.

For all loan classes, past due loans are reviewed on a monthly basis to identify loans 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 loan losses. United’s method of income recognition for loans 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 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.

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. TDRs can take the form of a reduction of the stated interest rate, splitting a loan into separate loans with market terms on one loan and concessionary terms on the other loan, receipts of assets from a debtor in partial or full satisfaction of a loan, the extension of the maturity date or dates at a stated interest rate lower than the current market rate for new debt with similar risk, the reduction of the face amount or maturity amount of the debt as stated in the instrument or other agreement, the reduction of accrued interest or any other concessionary type of renegotiated debt. As of March 31, 2018, United had TDRs of $48,271 as compared to $50,129 as of December 31, 2017. Of the $48,271 aggregate balance of TDRs at March 31, 2018, $33,592 was on nonaccrual and $85 were 30 to 89 days past due. Of the $50,129 aggregate balance of TDRs at December 31, 2017, $30,868 was on nonaccrual, $95 were 90 days or more past due and $1,254 were 30 to 89 days 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, 2018, there were no commitments to lend additional funds to debtors owing receivables whose terms have been modified in TDRs. At March 31, 2018, United had restructured loans in the amount of $1,760 that were modified by a reduction in the interest rate, $1,891 that were modified by a combination of a reduction in the interest rate and the principal and $44,620 that were modified by a change in terms.

A loan acquired and accounted for under ASC topic 310-30 “Loans and Debt Securities Acquired with Deteriorated Credit Quality” is reported as an accruing loan and a performing asset unless it does not perform in accordance with its restructured contractual provisions.

No loans were restructured during the first quarter of 2018. The following table sets forth United’s troubled debt restructurings that were restructured during the three months ended March 31, 2017, segregated by class of loans.

	Troubled Debt Restructurings
	For the Three Months Ended
	March 31, 2017
	Number of Contracts		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment
Commercial real estate:
Owner-occupied		0	$	0	$	0
Nonowner-occupied		0		0		0
Other commercial		4		2,752		2,741
Residential real estate		0		0		0
Construction & land development		1		1,456		1,450
Consumer:
Bankcard		0		0		0
Other consumer		0		0		0
Total		5	$	4,208	$	4,191

During the first quarter of 2017, $4,191 of restructured loans were modified by a change in terms. In some instances, the post-modification balance on the restructured loans is larger than the pre-modification balance due to the advancement of monies for items such as delinquent taxes on real estate property. The loans 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.

No loans restructured during the twelve-month periods ended March 31, 2018 and 2017 subsequently defaulted, resulting in a principal charge-off during the first quarters of 2018 and 2017.

The following table sets forth United’s age analysis of its past due loans, segregated by class of loans:

Age Analysis of Past Due Loans

As of March 31, 2018

	30-89 Days Past Due		90 Days or more  Past Due		Total Past Due		Current & Other (1)		Total Financing Receivables		Recorded Investment >90 Days & Accruing
Commercial real estate:
Owner-occupied	$	13,303	$	18,862	$	32,165	$	1,334,815	$	1,366,980	$	847
Nonowner-occupied		7,248		19,294		26,542		4,400,234		4,426,776		139
Other commercial		35,269		59,412		94,681		1,857,641		1,952,322		962
Residential real estate		30,344		25,641		55,985		3,010,005		3,065,990		6,027
Construction & land development		3,138		18,403		21,541		1,411,584		1,433,125		152
Consumer:
Bankcard		185		121		306		9,066		9,372		121
Other consumer		6,417		1,196		7,613		736,257		743,870		917
Total	$	95,904	$	142,929	$	238,833	$	12,759,602	$	12,998,435	$	9,165

(1) Other includes loans with a recorded investment of $189,675 acquired and accounted for under ASC topic 310-30 “Loans and Debt Securities Acquired with Deteriorated Credit Quality”.

Age Analysis of Past Due Loans

As of December 31, 2017

	30-89 Days Past Due		90 Days or more  Past Due		Total Past Due		Current & Other (1)		Total Financing Receivables		Recorded Investment >90  Days & Accruing
Commercial real estate:
Owner-occupied	$	7,968	$	13,663	$	21,631	$	1,339,998	$	1,361,629	$	458
Nonowner-occupied		10,398		20,448		30,846		4,420,452		4,451,298		634
Other commercial		11,533		68,476		80,009		1,918,970		1,998,979		940
Residential real estate		35,300		28,637		63,937		2,932,234		2,996,171		6,519
Construction & land development		1,615		17,190		18,805		1,486,102		1,504,907		385
Consumer:
Bankcard		449		186		635		9,679		10,314		186
Other consumer		9,288		968		10,256		693,783		704,039		775
Total	$	76,551	$	149,568	$	226,119	$	12,801,218	$	13,027,337	$	9,897

(1) Other includes loans with a recorded investment of $210,521 acquired and accounted for under ASC topic 310-30 “Loans and Debt Securities Acquired with Deteriorated Credit Quality”.

The following table sets forth United’s nonaccrual loans, segregated by class of loans:

Loans on Nonaccrual Status

	March  31, 2018		December 31, 2017
Commercial real estate:
Owner-occupied	$	18,015	$	13,205
Nonowner-occupied		19,155		19,814
Other commercial		58,450		67,536
Residential real estate		19,614		22,118
Construction & land development		18,251		16,805
Consumer:
Bankcard		0		0
Other consumer		279		193
Total	$	133,764	$	139,671

United assigns credit quality indicators of pass, special mention, substandard and doubtful to its loans. For United’s loans with a corporate credit exposure, United internally assigns a grade based on the creditworthiness of the borrower. For loans with a consumer credit exposure, United internally assigns a grade based upon an individual loan’s delinquency status. United reviews and updates, as necessary, these grades on a quarterly basis.

Special mention loans, with a corporate credit exposure, have potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loans or in the Company’s credit position at some future date. Borrowers may be experiencing adverse operating trends (declining revenues or margins) or an ill proportioned balance sheet (e.g., increasing inventory without an increase in sales, high leverage, tight liquidity). Adverse economic or market conditions, such as interest rate increases or the entry of a new competitor, may also support a special mention rating. Nonfinancial reasons for rating a credit exposure special mention include management problems, pending litigation, an ineffective loan agreement or other material structural weakness, and any other significant deviation from prudent lending practices. For loans with a consumer credit exposure, loans that are past due 30-89 days are generally considered special mention.

A substandard loan with a corporate credit exposure is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness, or weaknesses, that jeopardize the liquidation of the debt by the borrower. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. They require more intensive supervision by management. Substandard loans are generally characterized by current or expected unprofitable operations, inadequate debt service coverage, inadequate liquidity, or marginal capitalization. Repayment may depend on collateral or other credit risk mitigants. For some substandard loans, the likelihood of full collection of interest and principal may be in doubt and thus, placed on nonaccrual. For loans with a consumer credit exposure, loans that are 90 days or more past due or that have been placed on nonaccrual are considered substandard.

A loan with corporate credit exposure is classified as doubtful if it has all the weaknesses inherent in one classified as substandard with the added characteristic that the weaknesses make collection in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. 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 prior to such a classification. Loans classified as doubtful are also considered impaired.

The following tables set forth United’s credit quality indicators information, by class of loans:

Credit Quality Indicators

Corporate Credit Exposure

As of March 31, 2018
	Commercial Real Estate				Other Commercial		Construction &Land Development
	Owner- occupied		Nonowner- occupied
Grade:
Pass	$	1,291,287	$	4,250,743	$	1,820,513	$	1,349,638
Special mention		14,448		72,997		51,165		3,779
Substandard		61,245		103,036		77,848		79,708
Doubtful		0		0		2,796		0
Total	$	1,366,980	$	4,426,776	$	1,952,322	$	1,433,125
As of December 31, 2017
	Commercial Real Estate				Other Commercial		Construction &  Land Development
	Owner- occupied		Nonowner- occupied
Grade:
Pass	$	1,276,088	$	4,312,985	$	1,848,868	$	1,413,706
Special mention		20,165		57,618		55,564		5,196
Substandard		65,376		80,695		90,625		86,005
Doubtful		0		0		3,922		0
Total	$	1,361,629	$	4,451,298	$	1,998,979	$	1,504,907

Credit Quality Indicators

Consumer Credit Exposure

As of March 31, 2018
	Residential Real Estate		Bankcard		Other Consumer
Grade:
Pass	$	3,011,824	$	9,066	$	736,184
Special mention		20,738		185		6,460
Substandard		33,428		121		1,226
Doubtful		0		0		0
Total	$	3,065,990	$	9,372	$	743,870
As of December 31, 2017
	Residential Real Estate		Bankcard		Other Consumer
Grade:
Pass	$	2,945,266	$	9,679	$	693,727
Special mention		18,025		449		9,334
Substandard		32,880		186		978
Doubtful		0		0		0
Total	$	2,996,171	$	10,314	$	704,039

Loans are designated as impaired when, in the opinion of management, based on current information and events, the collection of principal and interest in accordance with the loan contract is doubtful. Typically, United does not consider loans for impairment unless a sustained period of delinquency (i.e. 90 days or more) is noted or there are subsequent events that impact repayment probability (i.e. negative financial trends, bankruptcy filings, eminent

foreclosure proceedings, etc.). Impairment is evaluated in total for smaller-balance loans of a similar nature and on an individual loan basis for other loans. Consistent with United’s existing method of income recognition for loans, interest on impaired loans, except those classified as nonaccrual, is recognized as income using the accrual method. Impaired loans, or portions thereof, are charged off when deemed uncollectible.

The following table sets forth United’s impaired loans information, by class of loans:

	Impaired Loans
	March 31, 2018						December 31, 2017
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	75,776	$	75,941	$	0	$	78,117	$	78,419	$	0
Nonowner-occupied		117,589		117,648		0		134,136		134,195		0
Other commercial		52,394		54,953		0		46,993		49,552		0
Residential real estate		24,125		24,787		0		26,751		28,202		0
Construction & land development		48,320		53,084		0		52,279		59,691		0
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		42		42		0		15		15		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	5,873	$	5,873	$	1,075	$	9,132	$	9,132	$	2,251
Nonowner-occupied		8,543		8,543		1,471		7,797		7,797		1,592
Other commercial		48,082		55,905		16,180		60,512		70,396		16,721
Residential real estate		11,887		13,438		1,742		9,813		10,418		1,552
Construction & land development		2,015		4,664		217		1,383		1,383		229
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		0		0		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	81,649	$	81,814	$	1,075	$	87,249	$	87,551	$	2,251
Nonowner-occupied		126,132		126,191		1,471		141,933		141,992		1,592
Other commercial		100,476		110,858		16,180		107,505		119,948		16,721
Residential real estate		36,012		38,225		1,742		36,564		38,620		1,552
Construction & land development		50,335		57,748		217		53,662		61,074		229
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		42		42		0		15		15		0

	Impaired Loans
	For the Three Months Ended
	March 31, 2018				March 31, 2017
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	76,947	$	377	$	55,857	$	421
Nonowner-occupied		125,863		120		82,528		117
Other commercial		49,693		206		49,286		220
Residential real estate		25,437		83		21,814		41
Construction & land development		50,300		103		35,949		76
Consumer:
Bankcard		0		0		0		0
Other consumer		28		0		36		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	7,502	$	25	$	7,663	$	137
Nonowner-occupied		8,170		59		16,096		83
Other commercial		54,297		19		58,824		370
Residential real estate		10,850		0		13,113		8
Construction & land development		1,699		20		4,161		21
Consumer:
Bankcard		0		0		0		0
Other consumer		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	84,449	$	402	$	63,520	$	558
Nonowner-occupied		134,033		179		98,624		200
Other commercial		103,990		225		108,110		590
Residential real estate		36,287		83		34,927		49
Construction & land development		51,999		123		40,110		97
Consumer:
Bankcard		0		0		0		0
Other consumer		28		0		36		0

At March 31, 2018 and December 31, 2017, other real estate owned (“OREO”)  included in other assets in the Consolidated Balance Sheets was $22,778 and $24,348, 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, 2018 and December 31, 2017, the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process was $377 and $873, respectively.

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Allowance for Credit Losses

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Allowance for Credit Losses

6. ALLOWANCE FOR CREDIT LOSSES

The allowance for loan losses is management’s estimate of the probable credit losses inherent in the loan portfolio. For purposes of determining the general allowance, the loan portfolio is segregated by product type to recognize differing risk profiles among categories. It is further segregated by credit grade for non-homogenous loan pools and delinquency for homogeneous loan pools. The outstanding principal balance within each pool is multiplied by historical loss data, the loss emergence period (which is the period of time between the event that triggers a loss and the confirmation and/or charge off of that loss) and certain qualitative factors to derive the general loss allocation per pool. Specific loss allocations are calculated for commercial loans in excess of $500,000 in accordance with ASC topic 310. Risk characteristics of owner-occupied commercial real estate loans and other commercial loans are similar in that they are normally dependent upon the borrower’s internal cash flow from operations to service debt.

Nonowner-occupied commercial real estate 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 deemed to be uncollectible are charged against the allowance for loan losses, while recoveries of previously charged-off amounts are credited to the allowance for loan losses. For commercial loans, when a loan or a portion of a loan is identified to contain a loss, a charge-off recommendation is directed to management to charge-off all or a portion of that loan. Generally, any unsecured commercial loan more than six months delinquent in payment of interest must be charged-off in full. If secured, the charge-off is generally made to reduce the loan balance to a level equal to the liquidation value of the collateral when payment of principal and interest is six months delinquent. Any commercial loan, secured or unsecured, on which a principal or interest payment has not been made within 90 days, is reviewed monthly for appropriate action.

For consumer loans, closed-end retail loans that are past due 120 cumulative days delinquent from the contractual due date and open-end loans 180 cumulative days delinquent from the contractual due date are charged-off. Any consumer loan on which a principal or interest payment has not been made within 90 days is reviewed monthly for appropriate action. For a one-to-four family open-end or closed-end residential real estate loan, home equity loan, or high-loan-to-value loan that has reached 180 or more days past due, management evaluates the collateral position and charges-off any amount that exceeds the value of the collateral. On retail credits for which the borrower is in bankruptcy, all amounts deemed unrecoverable are charged off within 60 days of the receipt of the notification. On retail credits effected by fraud, a loan is charged-off within 90 days of the discovery of the fraud. In the event of the borrower’s death and if repayment within the required timeframe is uncertain, the loan is generally charged-off as soon as the amount of the loss is determined.

For loans acquired through the completion of a transfer, including loans acquired in a business combination, that have evidence of deterioration of credit quality since origination and for which it is probable, at acquisition, that United will be unable to collect all contractually required payments receivable are initially recorded at fair value (as determined by the present value of expected future cash flows) with no valuation allowance. The difference between the undiscounted cash flows expected at acquisition and the investment in the loan, or the “accretable yield,” is recognized as interest income on a level-yield method over the life of the loan. Contractually required payments for interest and principal that exceed the undiscounted cash flows expected at acquisition, or the “nonaccretable difference,” are not recognized as a yield adjustment or as a loss accrual or a valuation allowance. Increases in expected cash flows subsequent to the initial investment are recognized prospectively through adjustment of the yield on the loan over its remaining life. Decreases in expected cash flows are recognized as impairment. Valuation allowances on these impaired loans reflect only losses incurred after the acquisition (meaning the present value of all cash flows expected at acquisition that ultimately are not to be received). For the three months ended March 31, 2018 and 2017, the re-estimation of the expected cash flows related to loans acquired that have evidence of deterioration of credit quality resulted in provision for loan losses expense of $1,279 and $367, respectively.

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 $755 and $679 at March 31, 2018 and December 31, 2017, 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 are referred to as the allowance for credit losses.

A progression of the allowance for loan losses, by portfolio segment, for the periods indicated is summarized as follows:

Allowance for Loan Losses and Carrying Amount of Loans

For the Three Months Ended March 31, 2018

	Commercial Real Estate									Construction					Allowance for
	Owner- occupied			Nonowner- occupied		Other Commercial		Residential Real Estate		& Land Development			Consumer		Estimated Imprecision		Total
Allowance for Loan Losses:
Beginning balance	$	5,401		$	6,369	$	45,189	$	9,927	$	7,187		$	2,481	$	73	$	76,627
Charge-offs		1,015			0		2,868		910		460			605		0		5,858
Recoveries		55			136		106		264		2			143		0		706
Provision		(722	)		269		4,490		972		(300	)		372		97		5,178
Ending balance	$	3,719		$	6,774	$	46,917	$	10,253	$	6,429		$	2,391	$	170	$	76,653
Ending Balance: individually evaluated for impairment	$	1,075		$	1,471	$	16,180	$	1,742	$	217		$	0	$	0	$	20,685
Ending Balance: collectively evaluated for impairment	$	2,644		$	5,303	$	30,737	$	8,511	$	6,212		$	2,391	$	170	$	55,968
Ending Balance: loans acquired with deteriorated credit quality	$	0		$	0	$	0	$	0	$	0		$	0	$	0	$	0
Financing receivables:
Ending balance	$	1,366,980		$	4,426,776	$	1,952,322	$	3,065,990	$	1,433,125		$	753,242	$	0	$	12,998,435
Ending Balance: individually evaluated for impairment	$	33,438		$	22,868	$	71,478	$	13,856	$	16,909		$	0	$	0	$	158,549
Ending Balance: collectively evaluated for impairment	$	1,301,725		$	4,310,587	$	1,853,603	$	3,039,123	$	1,391,948		$	753,225	$	0	$	12,650,211
Ending Balance: loans acquired with deteriorated credit quality	$	31,817		$	93,321	$	27,241	$	13,011	$	24,268		$	17	$	0	$	189,675

Allowance for Loan Losses and Carrying Amount of Loans

For the Year Ended December 31, 2017

	Commercial Real Estate											Construction					Allowance for
	Owner- occupied			Nonowner- occupied			Other Commercial		Residential Real  Estate			&  Land Development			Consumer		Estimated Imprecision			Total
Allowance for Loan Losses:
Beginning balance	$	5,273		$	6,883		$	33,087	$	13,770		$	10,606		$	2,805	$	347		$	72,771
Charge-offs		2,246			296			21,189		2,973			3,337			2,822		0			32,863
Recoveries		2,599			244			3,395		601			726			748		0			8,313
Provision		(225	)		(462	)		29,896		(1,471	)		(808	)		1,750		(274	)		28,406
Ending balance	$	5,401		$	6,369		$	45,189	$	9,927		$	7,187		$	2,481	$	73		$	76,627
Ending Balance: individually evaluated for impairment	$	2,251		$	1,592		$	16,721	$	1,552		$	229		$	0	$	0		$	22,345
Ending Balance: collectively evaluated for impairment	$	3,150		$	4,777		$	28,468	$	8,375		$	6,958		$	2,481	$	73		$	54,282
Ending Balance: loans acquired with deteriorated credit quality	$	0		$	0		$	0	$	0		$	0		$	0	$	0		$	0
Financing receivables:
Ending balance	$	1,361,629		$	4,451,298		$	1,998,979	$	2,996,171		$	1,504,907		$	714,353	$	0		$	13,027,337
Ending Balance: individually evaluated for impairment	$	36,721		$	21,851		$	78,715	$	14,316		$	16,921		$	0	$	0		$	168,524
Ending Balance: collectively evaluated for impairment	$	1,291,379		$	4,320,997		$	1,892,706	$	2,967,666		$	1,461,206		$	714,338	$	0		$	12,648,292
Ending Balance: loans acquired with deteriorated credit quality	$	33,529		$	108,450		$	27,558	$	14,189		$	26,780		$	15	$	0		$	210,521

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Intangible Assets

3 Months Ended

Mar. 31, 2018

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, 2018
	Community Banking					Mortgage Banking					Total
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Core deposit intangible assets	$	98,359	($	56,463	)	$	0	($	0	)	$	98,359	($	56,463	)
Non-amortized intangible assets:
George Mason trade name	$	0				$	1,080				$	1,080
Goodwill not subject to amortization	$	1,473,265				$	5,315				$	1,478,580

	December 31, 2017
	Community Banking					Mortgage Banking				Total
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Core deposit intangible assets	$	98,359	($	54,453	)	$	0	$	0	$	98,359	($	54,453	)
Non-amortized intangible assets:
George Mason trade name	$	0				$	1,080			$	1,080
Goodwill not subject to amortization	$	1,473,265				$	5,115			$	1,478,380

The following table provides a reconciliation of goodwill:

	Community Banking		Mortgage Banking		Total
Goodwill at December 31, 2017	$	1,473,265	$	5,115	$	1,478,380
Preliminary addition to goodwill from Cardinal acquisition		0		200		200
Goodwill at March 31, 2018	$	1,473,265	$	5,315	$	1,478,580

United incurred amortization expense of $2,010 and $1,048 for the quarters ended March 31, 2018 and 2017, respectively.

The following table sets forth the anticipated amortization expense for intangible assets for the years subsequent to 2017:

Year	Amount
2018	$	8,039
2019		7,016
2020		6,309
2021		5,369
2022 and thereafter		17,173

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Short-Term Borrowings

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Short-Term Borrowings

8. SHORT-TERM BORROWINGS

Federal funds purchased and securities sold under agreements to repurchase are a significant source of funds for the Company. United has various unused lines of credit available from certain of its correspondent banks in the aggregate amount of $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. At March 31, 2018, federal funds purchased were $17,615 while total securities sold under agreements to repurchase (REPOs) were $250,771. Included in the $250,771 of total REPOs is a wholesale REPOs of $50,000, assumed in the Virginia Commerce merger. This wholesale REPO is scheduled to mature in May of 2018. 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 $20,000 line of credit with an unrelated financial institution to provide for general liquidity needs. The line is an unsecured, revolving line of credit. The line will be renewable on a 360-day basis and will carry an indexed, floating-rate of interest. The line requires compliance with various financial and nonfinancial covenants. At March 31, 2018, United had no outstanding balance under this line of credit.

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Long-Term Borrowings

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Long-Term Borrowings

9. 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, 2018, United had an unused borrowing amount of approximately $4,213,640 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, 2018, $1,060,948 of FHLB advances with a weighted-average interest rate of 1.84% are scheduled to mature within the next seven years.

The scheduled maturities of these FHLB borrowings are as follows:

Year	Amount
2018	$	746,863
2019		187,516
2020		42,013
2021		52,693
2022 and thereafter		31,863
Total	$	1,060,948

At March 31, 2018, United had a total of fourteen statutory business trusts that were formed for the purpose of issuing or participating in pools of trust preferred capital securities (“Capital Securities”) with the proceeds invested in junior subordinated debt securities (“Debentures”) of United. The Debentures, which are subordinate and junior in right of payment to all present and future senior indebtedness and certain other financial obligations of United, are the sole assets of the trusts and United’s payment under the Debentures is the sole source of revenue for the trusts. At March 31, 2018 and December 31, 2017, the outstanding balance of the Debentures was $233,961 and $242,446, respectively, and was included in the category of long-term debt on the Consolidated Balance Sheets entitled “Other long-term borrowings.” The Capital Securities are not included as a component of shareholders’ equity in the Consolidated Balance Sheets. United fully and unconditionally guarantees each individual trust’s obligations under the Capital Securities.

Under the provisions of the subordinated debt, United has the right to defer payment of interest on the subordinated debt at any time, or from time to time, for periods not exceeding five years. If interest payments on the subordinated debt are deferred, the dividends on the Capital Securities are also deferred. Interest on the subordinated debt is cumulative.

For reporting periods prior to June 30, 2017, the Trust Preferred Securities qualified as Tier 1 regulatory capital under the “Basel III Capital Rules” as published by United’s primary federal regulator, the Federal Reserve, in July of 2013. The “Basel III Capital Rules” established a new comprehensive capital framework for U.S. banking organizations. Because United was less than $15 billion in total consolidated assets, the Basel III Capital Rules grandfathered United’s Trust Preferred Securities as Tier 1 capital under the limitations for restricted capital elements in the general risk-based capital rules. As a result, beginning in 2015 (the adoption date), United’s Trust Preferred Securities was subject to a limit of 25 percent of Tier 1 capital elements excluding any non-qualifying capital instruments and after all regulatory capital deductions and adjustments applied to Tier 1 capital, which is substantially similar to the limit in the general risk-based capital rules. Trust preferred securities no longer included in United’s Tier 1 capital could be included as a component of Tier 2 capital on a permanent basis without phase-out.

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Commitments and Contingent Liabilities

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingent Liabilities

10. COMMITMENTS AND CONTINGENT LIABILITIES

United is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers and to alter its own exposure to fluctuations in interest rates. These financial instruments include loan commitments, standby letters of credit, and interest rate swap agreements. The instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the financial statements.

United’s maximum exposure to credit loss in the event of nonperformance by the counterparty to the financial instrument for the loan commitments and standby letters of credit is the contractual or notional amount of those instruments. United uses the same policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Collateral may be obtained, if deemed necessary, based on management’s credit evaluation of the counterparty.

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the commitment contract. Commitments generally have fixed expiration dates or other termination clauses and may require the payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily, and historically do not, represent future cash requirements. The amount of collateral obtained, if deemed necessary upon the extension of credit, is based on management’s credit evaluation of the counterparty. United had approximately $4,001,212 and $4,224,719 of loan commitments outstanding as of March 31, 2018 and December 31, 2017, respectively, the majority of which contractually expire within one year. Included in the March 31, 2018 amount are commitments to extend credit of $400,836 related to George Mason’s mortgage loan funding commitments and 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, 2018 and December 31, 2017, United had no outstanding commercial letters of credit. 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 $142,532 and $147,017 as of March 31, 2018 and December 31, 2017, 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.

George Mason 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. George Mason has a reserve of $516 as of March 31, 2018.

United has derivative counter-party risk that may arise from the possible inability of George Mason’s third party investors to meet the terms of their forward sales contracts. George Mason 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.

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.

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Derivative Financial Instruments

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

11. 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.

United accounts for its derivative financial instruments in accordance with the Derivatives and Hedging topic of the FASB Accounting Standards Codification (ASC topic 815). The Derivatives and Hedging topic require all derivative instruments to be carried at fair value on the balance sheet. United has designated certain derivative instruments used to manage interest rate risk as hedge relationships with certain assets, liabilities or cash flows being hedged. Certain derivatives used for interest rate risk management are not designated in a hedge relationship.

Derivative instruments designated in a hedge relationship to mitigate exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivative instruments designated in a hedge relationship to mitigate exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges.

For a fair value hedge, the fair value of the interest rate swap is recognized on the balance sheet as either a freestanding asset or liability with a corresponding adjustment to the hedged financial instrument. Subsequent adjustments due to changes in the fair value of a derivative that qualifies as a fair value hedge are offset in current period earnings. 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 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 other comprehensive income, net of tax. The portion of a hedge that is ineffective is recognized immediately in earnings.

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. The portion of a hedge that is ineffective is recognized immediately in earnings.

United through George Mason 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 sells mortgage loans on either a best efforts or mandatory delivery basis. For loans sold on a mandatory delivery basis, United enters into forward mortgage-backed securities (the “residual hedge”) to mitigate the effect of interest rate risk. Both the rate lock commitment under mandatory delivery and the residual hedge are recorded at fair value through earnings and are not designated as accounting hedges. At the closing of the loan, the loan commitment derivative expires and United records a loan held for sale at fair value and continues to mark these assets to market under the election of fair value option. United closes out of the trading mortgage-backed securities assigned within the residual hedge and replaces the securities with a forward sales contract once a price has been accepted by an investor and recorded at fair value. For those loans selected to be sold under best efforts delivery, at the closing of the loan, the rate lock commitment derivative expires and the Company records a loan held for sale at fair value under the election of fair value option and continues to be obligated under the same forward loan sales contract entered into at inception of the rate lock commitment.

The derivative portfolio also includes derivative financial instruments not included in hedge relationships. These derivatives consist of interest rate swaps used for interest rate management purposes and derivatives executed with commercial banking customers to facilitate their interest rate management strategies. For derivatives that are not designated in a hedge relationship, changes in the fair value of the derivatives are recognized in earnings in the same period as the change in fair value. Gains and losses on other derivative financial instruments are included in noninterest income and noninterest expense, respectively.

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, 2018 and December 31, 2017.

	Asset Derivatives
	March 31, 2018						December 31, 2017
	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	$	88,679	$	2,514		Other assets	$	71,831	$	538
Total derivatives designated as hedging instruments			$	88,679	$	2,514			$	71,831	$	538
Derivatives not designated as hedging instruments
Forward loan sales commitments		Other assets	$	15,712	$	73		Other assets	$	31,024	$	2
Interest rate lock commitments		Other assets		195,330		5,610		Other assets		148,866		4,559
Total derivatives not designated as hedging instruments			$	211,042	$	5,683			$	179,890	$	4,561
Total asset derivatives			$	299,721	$	8,197			$	251,721	$	5,099

	Liability Derivatives
	March 31, 2018						December 31, 2017
	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	$	0	$	0	Other liabilities	$	18,795	$	165
Total derivatives designated as hedging instruments			$	0	$	0		$	18,795	$	165
Derivatives not designated as hedging instruments
TBA mortgage-backed securities		Other liabilities	$	258,000	$	762	Other liabilities	$	236,500	$	312
Interest rate lock commitments		Other liabilities		0		0	Other liabilities		0		0
Total derivatives not designated as hedging instruments			$	258,000	$	762		$	236,500	$	312
Total liability derivatives			$	258,000	$	762		$	255,295	$	477

Derivative contracts involve the risk of dealing with both bank customers and institutional derivative counterparties and their ability to meet contractual terms. Credit risk arises from the possible inability of counterparties to meet the terms of their contracts. United’s exposure is limited to the replacement value of the contracts rather than the notional amount of the contract. The Company’s agreements generally contain provisions that limit the unsecured exposure up to an agreed upon threshold. Additionally, the Company attempts to minimize credit risk through certain approval processes established by management.

The effect of United’s derivative financial instruments on its unaudited Consolidated Statements of Income for the three months ended March 31, 2018 and 2017 are presented as follows:

			Three Months Ended
	Income  Statement Location		March 31, 2018			March 31, 2017
Derivatives in hedging relationships Fair Value Hedges:
Interest rate swap contracts		Interest income/(expense)	$	(42	)	$	(158	)
Total derivatives in hedging relationships			$	(42	)	$	(158	)
Derivatives not designated as hedging instruments
Forward loan sales commitments		Income from Mortgage Banking Activities	$	73		$	0
TBA mortgage-backed securities		Income from Mortgage Banking Activities		(450	)		0
Interest rate lock commitments		Income from Mortgage Banking Activities		(1,269	)		0
Total derivatives not designated as hedging instruments			$	(1,646	)	$	0
Total derivatives			$	(1,688	)	$	(158	)

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Fair Value Measurements

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

12. FAIR VALUE MEASUREMENTS

United determines the fair values of its financial instruments based on the fair value hierarchy established by 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.

The Fair Value Measurements and Disclosures topic 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 prices, inputs and 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: Securities available for sale and equity securities are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted market prices, when available (Level 1). If quoted market prices are not available, fair values are measured utilizing independent valuation techniques of identical or similar securities for which significant assumptions are derived primarily from or corroborated by observable market data. Using a market approach valuation methodology, third party vendors compile prices from various sources and may determine the fair value of identical or similar securities by using pricing models that considers observable market data (Level 2). Management internally reviews the fair values provided by third party vendors on a monthly basis. Management’s review consists of comparing fair values assigned by third party vendors to trades and offerings observed by management. The review requires some degree of judgment as to the number or percentage of securities to review on the part of management which could fluctuate based on results of past reviews and in comparison to current expectations. Exceptions that are deemed to be material are reviewed by management. Additionally, to 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, 2018, management determined that the prices provided by its third party pricing source 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 by management at March 31, 2018. 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 spread, a considerable decline in the volume and level of trading activity in the instrument, a significant variance in prices among market participants, and a significant reduction in the level of observable inputs. Any securities available for sale not valued based upon quoted market prices or third party pricing models that consider observable market data are considered Level 3. Currently, United considers its valuation of available-for-sale Trup Cdos as Level 3. The Fair Value Measurements and Disclosures topic assumes that fair values of financial assets are determined in an orderly transaction and not a forced liquidation or distressed sale at the measurement date. Based on financial market conditions, United feels that the fair values obtained from its third party vendor reflect forced liquidation or distressed sales for these Trup Cdos due to decreased volume and trading activity. Additionally, management held discussions with institutional traders to identify trends in the number and type of transactions related to the Trup Cdos sector. Based upon management’s review of the market conditions for Trup Cdos, it was determined that an income approach valuation technique (present value technique) that maximizes the use of relevant observable inputs and minimizes the use of unobservable inputs is more representative of fair value than the valuation technique used by United’s third party vendor. The present value technique discounts expected future cash flows of a security to arrive at a present value. Management considers the following items when calculating the appropriate discount rate: the implied rate of return when the market was last active, changes in the implied rate of return as markets moved from very active to inactive, recent changes in credit ratings, and recent activity showing that the market has built in increased liquidity and credit premiums. Management’s internal credit review of each security was also factored in to determine the appropriate discount rate. The credit review considered each security’s collateral, subordination, excess spread, priority of claims, principal and interest

Loans held for sale: For residential mortgage loans sold in the mortgage banking segment, the loans closed are recorded at fair value using the fair value option which is measured using valuations from investors for loans with similar characteristics adjusted for the Company’s actual sales experience versus the investor’s indicated pricing. These valuations fall into the Level 3 category. The unobservable input is the Company’s historical sales prices. The range of historical sales prices increased the investor’s indicated pricing by a range of 0.19% to 0.68% with a weighted average increase of 0.36%.

Derivatives: United utilizes interest rate swaps to hedge exposure to interest rate risk and variability of cash flows associated to changes in the underlying interest rate of the hedged item. These hedging interest rate swaps are classified as either a fair value hedge or a cash flow hedge. United’s derivative portfolio also includes derivative financial instruments not included in hedge relationships. These derivatives consist of interest rate swaps used for interest rate management purposes and derivatives executed with commercial banking customers to facilitate their interest rate management strategies. United utilizes third-party vendors for derivative valuation purposes. These vendors determine the appropriate fair value based on a net present value calculation of the cash flows related to the interest rate swaps using primarily observable market inputs such as interest rate yield curves (Level 2). Valuation adjustments to derivative fair values for liquidity and credit risk are also taken into consideration, as well as the likelihood of default by United and derivative counterparties, the net counterparty exposure and the remaining maturities of the positions. Values obtained from third party vendors are typically not adjusted by management. Management internally reviews the derivative values provided by third party vendors on a quarterly basis. All derivative values are tested for reasonableness by management utilizing a net present value calculation.

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 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 other comprehensive income, net of tax. The portion of a hedge that is ineffective is recognized immediately in 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, George Mason enters into contractual interest rate lock commitments to extend credit to borrowers with fixed expiration dates. The commitments become effective when the borrowers “lock-in” a specified interest rate within the timeframes established by the mortgage companies. All borrowers are evaluated for credit 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, George Mason enters into either a forward sales contract to sell loans to investors when using best efforts or a TBA mortgage-backed security under mandatory delivery. As TBA mortgage-backed securities are actively traded in an open market, TBA mortgage-backed securities fall into a Level 1 category. 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 adjusted for the Company’s actual sales experience versus the investor’s indicated pricing. These valuations fall into the Level 3 category. The unobservable input is the Company’s historical sales prices. The range of historical sales prices increased the investor’s indicated pricing by a range of 0.19% to 0.68% with a weighted average increase of 0.36%.

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, 2018 and December 31, 2017, segregated by the level of the valuation inputs within the fair value hierarchy.

			Fair Value at March 31, 2018 Using
Description	Balance as of March  31, 2018		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 securities:
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	163,106	$	0	$	163,106	$	0
State and political subdivisions		293,712		0		293,712		0
Residential mortgage-backed securities

			Fair Value at March 31, 2018 Using
Description	Balance as of March  31, 2018		Quoted Prices in  Active Markets  for Identical Assets (Level  1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Agency		915,547		0		915,547		0
Non-agency		5,166		0		5,166		0
Commercial mortgage-backed securities
Agency		476,779		0		476,779		0
Asset-backed securities		146,584		0		146,584		0
Trust preferred collateralized debt obligations		8,064		0		0		8,064
Single issue trust preferred securities		13,146		0		13,146		0
Other corporate securities		63,007		7,036		55,971		0
Total available for sale securities		2,085,111		7,036		2,070,011		8,064
Equity securities:
Financial services industry		485		485		0		0
Equity mutual funds (1)		6,007		6,007		0		0
Other equity securities		4,668		4,668		0		0
Total equity securities		11,160		11,160		0		0
Loans held for sale		192,673		0		0		192,673
Derivative financial assets:
Interest rate swap contracts		2,514		0		2,514		0
Forward sales commitments		73		0		73		0
Interest rate lock commitments		5,610		0		0		5,610
Total derivative financial assets		8,197		0		2,587		5,610
Liabilities
Derivative financial liabilities:
TBA mortgage-backed securities		762		0		762		0
Total derivative financial liabilities		762		0		762		0

(1) The equity mutual funds are within a rabbi trust for the payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries.

			Fair Value at December 31, 2017 Using
Description	Balance as of December  31, 2017		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	$	114,758	$	0	$	114,758	$	0
State and political subdivisions		303,869		0		303,869		0
Residential mortgage-backed securities
Agency		814,593		0		814,593		0
Non-agency		5,512		0		5,512		0
Commercial mortgage-backed securities
Agency		454,857		0		454,857		0
Asset-backed securities		109,970		0		109,970		0
Trust preferred collateralized debt obligations		34,269		0		0		34,269

			Fair Value at December 31, 2017 Using
Description	Balance as of December  31, 2017		Quoted Prices in  Active Markets  for Identical Assets (Level  1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Single issue trust preferred securities		12,560		0		12,560		0
Other corporate securities		28,490		0		28,490		0
Total available for sale debt securities		1,878,878		0		1,844,609		34,269
Available for sale equity securities:
Financial services industry		3,545		331		3,214		0
Equity mutual funds (1)		6,332		6,332		0		0
Other equity securities		1		1		0		0
Total available for sale equity securities		9,878		6,664		3,214		0
Total available for sale securities		1,888,756		6,664		1,847,823		34,269
Loans held for sale		263,308		0		0		263,308
Derivative financial assets:
Interest rate swap contracts		538		0		538		0
Interest rate lock commitments		4,561		0		2		4,559
Total derivative financial assets		5,099		0		540		4,559
Liabilities
Derivative financial liabilities:
Interest rate swap contracts		165		0		165		0
TBA mortgage-backed securities		312		0		312		0
Total derivative financial liabilities		477		0		477		0

(1) The equity mutual funds are within a rabbi trust for the payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries.

There were no transfers between Level 1 and Level 2 for financial assets and liabilities measured at fair value on a recurring basis during the three months ended March 31, 2018 and the year ended December 31, 2017.

The following table presents additional information about financial assets and liabilities measured at fair value at March 31, 2018 and December 31, 2017 on a recurring basis and for which United has utilized Level 3 inputs to determine fair value:

	Available-for-sale Securities
	Trust preferred collateralized  debt obligations
	March 31, 2018			December 31, 2017
Balance, beginning of period	$	34,269		$	33,552
Total gains or losses (realized/unrealized):
Included in earnings (or changes in net assets)		28			9
Included in other comprehensive income		217			8,757
Purchases, issuances, and settlements		0			0
Sales		(26,450	)		(8,049	)
Transfers in and/or out of Level 3		0			0
Balance, end of period	$	8,064		$	34,269
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 relating to assets still held at reporting date	$	0		$	0

	Loans held for sale
	March 31, 2018			December 31, 2017
Balance, beginning of period	$	263,308		$	0
Acquired in Cardinal merger		0			271,301
Originations		573,732			2,333,927
Sales		(631,834	)		(2,408,945	)
Total gains or losses during the period recognized in earnings		14,883			58,132
Transfers in and/or out of Level 3		(27,416	)		8,893
Balance, end of period	$	192,673		$	263,308
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 relating to assets still held at reporting date	$	0		$	0

	Derivative Financial  Assets Interest Rate Lock Commitments
	March 31, 2018		December 31, 2017
Balance, beginning of period	$	4,559	$	0
Acquired in Cardinal merger		0		10,393
Transfers other		1,051		(5,834	)
Balance, end of period	$	5,610	$	4,559
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 relating to assets still held at reporting date	$	0	$	0

Certain financial assets are measured at fair value on a nonrecurring basis in accordance with GAAP. Adjustments to the fair value of these assets usually result from the application of lower-of-cost-or-market accounting or write-downs of individual assets.

Fair Value Option

United elected the fair value option for the loans held for sale in its mortgage banking segment to mitigate a divergence between accounting losses and economic exposure.

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, 2018			Three Months  Ended March 31, 2017
Assets
Loans held for sale
Income from mortgage banking activities	$	(1,719	)	$	0

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, 2018						December 31, 2017
Description	Unpaid Principal Balance		Fair Value		Fair Value Over/(Under) Unpaid Principal Balance		Unpaid Principal Balance		Fair Value		Fair Value Over/(Under) Unpaid Principal Balance
Assets
Loans held for sale	$	188,998	$	192,673	$	3,675	$	257,674	$	263,308	$	5,634

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

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: Loans held for sale within the community banking segment that are delivered on a best efforts basis are carried at the lower of cost or fair value. The fair value is based on the price secondary markets are currently offering for similar loans using observable market data which is not materially different than cost due to the short duration between 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 three months ended March 31, 2018. Gains and losses on sale of loans are recorded within income from mortgage banking activities on the Consolidated Statements of Income.

Impaired Loans: Loans are designated as impaired when, in the judgment of management based on current information and events, it is probable that all amounts due according to the contractual terms of the loan agreement will not be collected. Impairment is measured based upon the present value of expected future cash flows from the loan discounted at the loan’s effective rate and the loan’s observable market price or the fair value of collateral, if the loan is collateral dependent. Fair value is measured using a market approach based on the value of the collateral securing the loans. Collateral may be in the form of real estate or business assets including equipment, inventory, and accounts receivable. The vast majority of the collateral is real estate. The value of real estate collateral is determined utilizing an appraisal conducted by an independent, licensed appraiser outside of the Company using comparable property sales (Level 2). However, if the collateral is a house or building in the process of construction or if an appraisal of the real estate property is over two years old, then the fair value is considered Level 3. The value of business equipment is based upon an outside appraisal if deemed significant, or the net book value on the applicable business’ financial statements if not considered significant using observable market data. Likewise, values for inventory and accounts receivables collateral are based on financial statement balances or aging reports (Level 3). For impaired loans, a specific reserve is established through the Allowance for Loan Losses, if necessary, by estimating the fair value of the underlying collateral on a nonrecurring basis. Any fair value adjustments are recorded in the period incurred as provision for credit losses expense on the Consolidated Statements of Income.

OREO: OREO consists of real estate acquired in foreclosure or other settlement of loans. Such assets are carried on the balance sheet at the lower of the investment in the assets or the fair value of the assets less estimated selling costs. Fair value is determined by one of two market approach methods depending on whether the property has been vacated and an appraisal can be conducted. If the property has yet to be vacated and thus an appraisal cannot be performed, a Brokers Price Opinion (i.e. BPO), is obtained. A BPO represents a best estimate valuation performed by a realtor based on knowledge of current property values and a visual examination of the exterior condition of the property. Once the property is subsequently vacated, a formal appraisal is obtained and the recorded asset value appropriately adjusted. On the other hand, if the OREO property has been vacated and an appraisal can be conducted, the fair value of the property is determined based upon the appraisal using a market approach. An authorized independent appraiser conducts appraisals for United. Appraisals for property other than ongoing construction are based on consideration of comparable property sales (Level 2). In contrast, valuation of ongoing construction assets requires some degree of professional judgment. In conducting an appraisal for ongoing construction property, the appraiser develops two appraised amounts: an “as is” appraised value and a “completed” value. Based on professional judgment and their knowledge of the particular situation, management determines the appropriate fair value to be utilized for such property (Level 3). As a matter of policy, valuations are reviewed at least annually and appraisals are generally updated on a bi-annual basis with values lowered as necessary.

Intangible Assets: For United, intangible assets consist of goodwill and core deposit intangibles. Goodwill is tested for impairment at least annually or sooner if indicators of impairment exist. Goodwill impairment would be defined as the difference between the recorded value of goodwill (i.e. book value) and the implied fair value of goodwill. In determining the implied fair value of goodwill for purposes of evaluating goodwill impairment, United determines the fair value of the reporting unit using a market approach and compares the fair value to its carrying value. If the carrying value exceeds the fair value, a step two test is performed whereby the implied fair value is computed by deducting the fair value of all tangible and intangible net assets from the fair value of the reporting unit. Core deposit intangibles relate to the estimated value of the deposit base of acquired institutions. Management reviews core deposit intangible assets on an annual basis, or sooner if indicators of impairment exist, and evaluates changes in facts and circumstances that may indicate impairment in the carrying value. No other fair value measurement of intangible assets was made during the first three months of 2018 and 2017.

The following table summarizes United’s financial assets that were measured at fair value on a nonrecurring basis during the period:

			Carrying value at March 31, 2018
Description	Balance as of March  31, 2018		Quoted Prices in  Active Markets  for Identical Assets (Level  1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		YTD Losses
Assets
Loans held for sale	$	1,242	$	0	$	1,242	$	0	$	0
Impaired Loans		76,400		0		56,632		19,768		1,376
OREO		22,778		0		22,702		76		585
			Carrying value at December 31, 2017
Description	Balance as of December 31, 2017		Quoted Prices in  Active Markets  for Identical Assets (Level  1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		YTD Losses
Assets
Loans held for sale	$	2,647	$	0	$	2,647	$	0	$	14
Impaired Loans		88,637		0		70,950		17,687		12,291
OREO		24,348		0		24,151		197		4,200

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: The carrying amounts reported in the balance sheet for cash and cash equivalents approximate those assets’ fair values.

Securities held to maturity and other securities: The estimated fair values of securities held to maturity are based on quoted market prices, where available. If quoted market prices are not available, fair values are measured utilizing independent valuation techniques of identical or similar securities for which significant assumptions are derived primarily from or corroborated by observable market data. Third party vendors compile prices from various sources and may determine the fair value of identical or similar securities by using pricing models that considers 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: For March 31, 2018, fair values of loans are estimated on an exit price basis incorporating discounts for credit, liquidity and marketability factors. This is not comparable with the fair values disclosed for December 31, 2017, which were based on an entrance price basis. For that date, the fair values of certain mortgage loans (e.g., one-to-four family residential), credit card loans, and other consumer loans were based on quoted market prices of similar loans sold in conjunction with securitization transactions, adjusted for differences in loan characteristics. The fair values of other loans (e.g., commercial real estate and rental property mortgage loans, commercial and industrial loans, financial institution loans and agricultural loans) were estimated using discounted cash flow analyses, using market interest rates being offered at that time for loans with similar terms to borrowers of similar creditworthiness, which included adjustments for liquidity concerns. For acquired impaired loans, fair value was assumed to equal United’s carrying value, which represented the present value of expected future principal and interest cash flows, as adjusted for any Allowance for Loan Losses recorded for these loans.

Deposits: The fair values of demand deposits (e.g., interest and noninterest checking, regular savings and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). The carrying amounts of variable-rate, fixed-term money market accounts and certificates of deposit 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: The carrying amounts of federal funds purchased, borrowings under repurchase agreements and any other short-term borrowings approximate their fair values.

Long-term Borrowings: The fair values of United’s Federal Home Loan Bank borrowings and trust preferred securities are estimated using discounted cash flow analyses, based on United’s current incremental borrowing rates for similar types of borrowing arrangements.

Summary of Fair Values for All Financial Instruments

The estimated fair values of United’s financial instruments, including those measured at amortized cost on the balance sheet, are summarized below:

					Fair Value Measurements
	Carrying Amount		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, 2018
Cash and cash equivalents	$	1,139,170	$	1,139,170	$	0	$	1,139,170	$	0
Securities available for sale		2,085,111		2,085,111		7,036		2,070,011		8,064
Securities held to maturity		20,405		20,006		0		16,986		3,020
Equity securities		11,160		11,160		11,160		0		0
Other securities		152,287		144,673		0		0		144,673
Loans held for sale		193,915		193,915		0		1,242		192,673
Loans		12,907,764		12,207,257		0		0		12,207,257
Derivative financial assets		8,197		8,197		0		2,587		5,610
Deposits		13,646,168		13,611,626		0		13,611,626		0
Short-term borrowings		218,386		218,386		0		218,386		0
Long-term borrowings		1,344,909		1,317,352		0		1,317,352		0
Derivative financial liabilities		762		762		0		762		0
December 31, 2017
Cash and cash equivalents	$	1,666,167	$	1,666,167	$	0	$	1,666,167	$	0
Securities available for sale		1,888,756		1,888,756		6,664		1,847,823		34,269
Securities held to maturity		20,428		20,018		0		16,998		3,020
Other securities		162,461		154,338		0		0		154,338
Loans held for sale		265,955		265,955		0		2,647		263,308
Loans		12,934,794		12,437,797		0		0		12,437,797
Derivative financial assets		5,099		5,099		0		540		4,559
Deposits		13,830,591		14,024,720		0		14,024,720		0
Short-term borrowings		477,587		477,587		0		477,587		0
Long-term borrowings		1,363,977		1,338,754		0		1,338,754		0
Derivative financial liabilities		477		477		0		477		0

XML

Stock Based Compensation

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Based Compensation

13. STOCK BASED COMPENSATION

On May 18, 2016, United’s shareholders approved the 2016 Long-Term Incentive Plan (2016 LTI Plan). The 2016 LTI Plan became effective as of May 18, 2016. An award granted under the 2016 LTI Plan may consist of any non-qualified stock options or incentive stock options, stock appreciation rights (SARs), restricted stock, restricted stock units, performance units or other-stock-based award. These awards all relate to the common stock of United. The maximum number of shares of United common stock which may be issued under the 2016 LTI Plan is 1,700,000. The 2016 LTI Plan will be administered by a board committee appointed by United’s Board of Directors (the Board). Unless otherwise determined by the Board, the Compensation Committee of the Board (the Committee) shall administer the 2016 LTI Plan. Any and all shares may be issued in respect of any of the types of Awards, provided that (1) the aggregate number of shares that may be issued in respect of restricted stock awards, and restricted stock unit awards which are settled in shares is 500,000, and (2) the aggregate number of shares that may be issued pursuant to stock options is 1,200,000. The shares to be offered under the 2016 LTI Plan may be authorized and unissued shares or treasury shares. The maximum number of options and SARs, in the aggregate, which may be awarded to any individual key employee during any calendar year is 100,000. The maximum number of stock options and SARs, in the aggregate, which may be awarded to any non-employee director during any calendar year is 10,000. The maximum number of shares of restricted stock or shares subject to a restricted stock units award that may be granted during any calendar year is 50,000 shares to any individual key employee and 5,000 shares to any individual non-employee director. Subject to certain change in control provisions, the 2016 LTI Plan provides that awards of restricted stock and restricted stock units will vest as the Committee determines in the award agreement, provided that no awards will vest sooner than 1/3 per year over the first three anniversaries of the award. Awards granted to executive officers of United typically will have performance based vesting conditions. A Form S-8 was filed on July 29, 2016 with the Securities and Exchange Commission to register all the shares which were available for the 2016 LTI Plan. During the first three months of 2018, a total of 276,192 non-qualified stock options and 97,004 shares of restricted stock were granted under the 2016 LTI Plan.

Compensation expense of $968 and $682 related to the nonvested awards under United’s Long-Term Incentive Plans was incurred for the first quarter of 2018 and 2017, 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 2016 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 31, 2018, and the changes during the first three months of 2018 are presented below:

	Three Months Ended March 31, 2018
						Weighted Average
	Shares			Aggregate Intrinsic Value		Remaining Contractual Term (Yrs.)		Exercise Price
Outstanding at January 1, 2018		1,558,438						$	31.09
Granted		276,192							37.60
Exercised		(15,043	)						19.97
Forfeited or expired		(2,438	)						39.16
Outstanding at March 31, 2018		1,817,149		$	9,046,231		6.3	$	32.16
Exercisable at March 31, 2018		1,222,889		$	9,027,432		4.9	$	28.57

The following table summarizes the status of United’s nonvested stock option awards during the first three months of 2018:

	Shares			Weighted-Average Grant Date Fair Value Per Share
Nonvested at January 1, 2018		507,871		$	7.89
Granted		276,192			7.56
Vested		(187,365	)		7.52
Forfeited or expired		(2,438	)		7.75
Nonvested at March 31, 2018		594,260		$	7.85

During the three months ended March 31, 2018 and 2017, 15,043 and 22,523 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, 2018 and 2017 were issued from authorized and unissued stock. The total intrinsic value of options exercised under the Plans during the three months ended March 31, 2018 and 2017 was $246 and $452 respectively.

Restricted Stock

Under the 2011 LTI Plan, United may award restricted common shares to key employees and non-employee directors. Restricted shares granted to participants have a four-year time-based vesting period. Recipients of restricted shares do not pay any consideration to United for the shares, have the right to vote all shares subject to such grant and receive all dividends with respect to such shares, whether or not the shares have vested. Presently, these nonvested participating securities have an immaterial impact on diluted earnings per share.

The following summarizes the changes to United’s restricted common shares for the period ended March 31, 2018:

	Number of Shares			Weighted-Average Grant Date Fair Value Per Share
Outstanding at January 1, 2018		170,496		$	40.05
Granted		97,004			37.60
Vested		(62,285	)		37.59
Forfeited		(683	)		39.15
Outstanding at March 31, 2018		204,532		$	39.64

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Employee Benefit Plans

3 Months Ended

Mar. 31, 2018

Retirement Benefits [Abstract]

Employee Benefit Plans

14. EMPLOYEE BENEFIT PLANS

United has a defined benefit retirement plan covering a majority of all employees. Pension benefits are based on years of service and the average of the employee’s highest five consecutive plan years of basic compensation paid during the ten plan years preceding the date of determination. Contributions are intended to provide not only for benefits attributed to service to date, but also for those expected to be earned in the future. During the first quarter of 2018, United made a discretionary contribution of $7,000 to the Plan.

In September of 2007, after a recommendation by United’s Pension Committee and approval by United’s Board of Directors, the United Bankshares, Inc. Pension Plan (the Plan) was amended to change the participation rules. The decision to change the participation rules for the Plan followed current industry trends, as many large and medium size companies had taken similar steps. The amendment provides that employees hired on or after October 1, 2007, will not be eligible to participate in the Plan. However, new employees will be eligible to participate in United’s Savings and Stock Investment 401(k) plan. This change had no impact on current employees hired prior to October 1, 2007 as they will continue to participate in the Plan, with no change in benefit provisions, and will continue to be eligible to participate in United’s Savings and Stock Investment 401(k) plan.

Included in accumulated other comprehensive income at December 31, 2017 are unrecognized actuarial losses of $56,222 ($35,420 net of tax) that have not yet been recognized in net periodic pension cost. The amortization of this item expected to be recognized in net periodic pension cost during the fiscal year ended December 31, 2018 is $4,653 ($2,932 net of tax).

Net periodic pension cost for the three months ended March 31, 2018 and 2017 included the following components:

	Three Months Ended March 31
	2018			2017
Service cost	$	658		$	562
Interest cost		1,295			1,265
Expected return on plan assets		(2,522	)		(2,027	)
Amortization of transition asset		0			0
Recognized net actuarial loss		1,149			1,087
Amortization of prior service cost		0			0
Net periodic pension (benefit) cost	$	580		$	887
Weighted-Average Assumptions:
Discount rate		3.83	%		4.49	%
Expected return on assets		7.00	%		7.00	%
Rate of compensation increase (prior to age 45)		3.50	%		3.50	%
Rate of compensation increase		3.00	%		3.00	%

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Income Taxes

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

15. INCOME TAXES

United records a liability for uncertain income tax positions based on a recognition threshold of more-likely-than-not, and a measurement attribute for all tax positions taken on a tax return, in order for those tax positions to be recognized in the financial statements.

As of March 31, 2018 and 2017, the total amount of accrued interest related to uncertain tax positions was $695 and $589, 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, 2014, 2015 and 2016 and certain State Taxing authorities for the years ended December 31, 2014 through 2016.

On December 22, 2017, the Tax Cuts and Jobs Act (the “Tax Act”) was signed into law. The Tax Act lowered the Federal corporate tax rate from 35% to 21% effective January 1, 2018 and made numerous other tax law changes. U.S. generally accepted accounting principles (GAAP) requires companies to recognize the effect of tax law changes in the period of enactment. As a result of the Tax Act, United was required to remeasure deferred tax assets and liabilities at the new tax rate and as a result, recorded deferred tax expense of $37,732 in the fourth quarter of 2017. Reasonable estimates were made based on the Company’s analysis of the Tax Act. This provisional amount may be adjusted in future periods during 2018 when additional information is obtained as provided for under Staff Accounting Bulletin (“SAB 118”). Additional information that may affect our provisional amount would include further clarification and guidance on how the IRS will implement tax reform, further clarification and guidance on how state taxing authorities will implement tax reform and the related effect on the Company’s state income tax returns, completion of United’s 2017 tax return filings, and the potential for additional guidance from the SEC or the FASB related to the Tax Act. Management continues to evaluate other potential impacts of the Tax Act. The Company did not identify items for which the income tax effects of the Tax Act have not been completed and a reasonable estimate could not be determined as of March 31, 2018.

United’s effective tax rate was 22.48% for the first quarter of 2018 and 34.25% for the first quarter of 2017. The lower effective tax rate for the first quarter of 2018 was due mainly to the Tax Act.

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Comprehensive Income

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Comprehensive Income

16. COMPREHENSIVE INCOME

The components of total comprehensive income for the three months ended March 31, 2018 and 2017 are as follows:

	Three Months Ended March 31
	2018			2017
Net Income	$	61,706		$	38,809
Available for sale (“AFS”) securities:
AFS securities with OTTI charges during the period		0			(44	)
Related income tax effect		0			16
Less : OTTI charges recognized in net income		0			44
Related income tax benefit		0			(16	)
Reclassification of previous noncredit OTTI to credit OTTI		0			0
Related income tax benefit		0			0
Net unrealized gain (loss) on AFS securities with OTTI		0			0
AFS securities – all other:
Change in net unrealized gain on AFS securities arising during the period		(22,017	)		5,576
Related income tax effect		5,130			(2,063	)
Net reclassification adjustment for losses (gains) included in net income		149			(214	)
Related income tax (benefit) expense		(35	)		79
		(16,773	)		3,378
Net effect of AFS securities on other comprehensive income		(16,773	)		3,378
Held to maturity (“HTM”) securities:
Accretion on the unrealized loss for securities transferred from AFS to the HTM investment portfolio prior to call or maturity		2			2
Related income tax expense		(1	)		(1	)
Net effect of HTM securities on other comprehensive income		1			1
Pension plan:
Recognized net actuarial loss		1,149			1,087
Related income tax benefit		(416	)		(392	)
Net effect of change in pension plan asset on other comprehensive income		733			695
Total change in other comprehensive income		(16,039	)		4,074
Total Comprehensive Income	$	45,667		$	42,883

The components of accumulated other comprehensive income for the three months ended March 31, 2018 are as follows:

Changes in Accumulated Other Comprehensive Income (AOCI) by Component ^(a)

For the Three Months Ended March 31, 2018

	Unrealized Gains/Losses on AFS Securities			Accretion on the  unrealized loss for securities transferred from AFS to the HTM			Defined Benefit Pension Items			Total
Balance at January 1, 2018	($	6,204	)	($	46	)	($	35,775	)	($	42,025	)
Cumulative effect of adopting Accounting Standard Update 2016-01		(136	)								(136	)
Reclass due to adopting Accounting Standard Update 2018-02		(1,632	)					(4,721	)		(6,353	)
Other comprehensive income before reclassification		(16,887	)		1			0			(16,886	)
Amounts reclassified from accumulated other comprehensive income		114			0			733			847
Net current-period other comprehensive income, net of tax		(16,773	)		1			733			(16,039	)
Balance at March 31, 2018	($	24,745	)	($	45	)	($	39,763	)	($	64,553	)

(a) All amounts are net-of-tax.

Reclassifications out of Accumulated Other Comprehensive Income (AOCI)

For the Three Months Ended March 31, 2018

Details about AOCI Components	Amount Reclassified from AOCI			Affected Line Item in the Statement Where Net Income is Presented
Available for sale (“AFS”) securities:
Reclassification of previous noncredit OTTI to credit OTTI	$	0		Net investment securities (losses) gains
Net reclassification adjustment for losses (gains) included in net income		149		Net investment securities (losses) gains
		149		Total before tax
Related income tax effect		(35	)	Tax expense
		114		Net of tax
Pension plan:
Recognized net actuarial loss		1,149	(a)
		1,149		Total before tax
Related income tax effect		(416	)	Tax expense
		733		Net of tax
Total reclassifications for the period	$	847

(a) This AOCI component is included in the computation of net periodic pension cost (see Note 14, Employee Benefit Plans)

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Earnings Per Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Share

17. 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
	2018		2017
Distributed earnings allocated to common stock	$	35,679	$	26,722
Undistributed earnings allocated to common stock		25,919		12,014
Net earnings allocated to common shareholders	$	61,598	$	38,736

	Three Months Ended
	March 31
	2018		2017
Average common shares outstanding		104,859,427		80,902,368
Common stock equivalents		303,431		404,172
Average diluted shares outstanding		105,162,858		81,306,540
Earnings per basic common share	$	0.59	$	0.48
Earnings per diluted common share	$	0.59	$	0.48

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Variable Interest Entities

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Variable Interest Entities

18. 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 fourteen statutory business trusts that were created for the purpose of raising funds that originally qualified for Tier I regulatory capital. As previously discussed, with the acquisition of Cardinal, 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 Capital Securities Issued		Interest Rate	Maturity Date
United Statutory Trust III	December 17, 2003	$	20,000	3-month LIBOR + 2.85%	December 17, 2033
United Statutory Trust IV	December 19, 2003	$	25,000	3-month LIBOR + 2.85%	January 23, 2034
United Statutory Trust V	July 12, 2007	$	50,000	3-month LIBOR + 1.55%	October 1, 2037
United Statutory Trust VI	September 20, 2007	$	30,000	3-month LIBOR + 1.30%	December 15, 2037
Premier Statutory Trust II	September 25, 2003	$	6,000	3-month LIBOR + 3.10%	October 8, 2033
Premier Statutory Trust III	May 16, 2005	$	8,000	3-month LIBOR + 1.74%	June 15, 2035
Premier Statutory Trust IV	June 20, 2006	$	14,000	3-month LIBOR + 1.55%	September 23, 2036
Premier Statutory Trust V	December 14, 2006	$	10,000	3-month LIBOR + 1.61%	March 1, 2037
Centra Statutory Trust I	September 20, 2004	$	10,000	3-month LIBOR + 2.29%	September 20, 2034
Centra Statutory Trust II	June 15, 2006	$	10,000	3-month LIBOR + 1.65%	July 7, 2036
Virginia Commerce Trust II	December 19, 2002	$	15,000	6-month LIBOR + 3.30%	December 19, 2032
Virginia Commerce Trust III	December 20, 2005	$	25,000	3-month LIBOR + 1.42%	February 23, 2036
Cardinal Statutory Trust I	July 27, 2004	$	20,000	3-month LIBOR + 2.40%	September 15, 2034
UFBC Capital Trust I	December 30, 2004	$	5,000	3-month LIBOR + 2.10%	March 15, 2035

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, 2018						As of December 31, 2017
	Aggregate Assets		Aggregate Liabilities		Risk Of Loss (1)		Aggregate Assets		Aggregate Liabilities		Risk Of Loss (1)
Trust preferred securities	$	257,527	$	248,700	$	8,827	$	266,669	$	257,674	$	8,995

(1) Represents investment in VIEs.

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Segment Information

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Segment Information

19. SEGMENT INFORMATION

As a result of the Cardinal acquisition in April 2017, United now operates in two business segments: community banking and mortgage banking. Prior to the Cardinal acquisition, United’s business activities were confined to just one reportable segment of community 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 George Mason.

The community banking segment provides the mortgage banking segment (George Mason) with short-term funds to originate mortgage loans through a warehouse line of credit and charges the mortgage banking segment interest based on the prime rate. These transactions are eliminated in the consolidation process.

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, 2018 and 2017 is as follows:

	At and For the Three Months Ended March 31,  2018
	Community Banking		Mortgage Banking			Other			Consolidated
Net interest income	$	146,261	$	376		$	(2,594	)	$	144,043
Provision for loans losses		5,178		0			0			5,178
Other income		17,131		14,883			(822	)		31,192
Other expense		72,491		18,384			(423	)		90,452
Income taxes		19,276		(703	)		(674	)		17,899
Net income (loss)	$	66,447	$	(2,422	)	$	(2,319	)	$	61,706
Total assets (liabilities)	$	18,319,946	$	289,925		$	9,831		$	18,619,702
Average assets (liabilities)		18,318,613		210,172			15,012			18,543,797

	At and For the Three Months Ended March 31,  2017
	Community Banking		Other			Consolidated
Net interest income	$	109,660	$	(2,040	)	$	107,620
Provision for loans losses		5,899		0			5,899
Other income		16,813		3,333			20,146
Other expense		62,752		90			62,842
Income taxes		19,804		412			20,216
Net income (loss)	$	38,018	$	791		$	38,809
Total assets (liabilities)	$	14,779,983	$	(17,668	)	$	14,762,315
Average assets (liabilities)		14,433,409		(27,676	)		14,405,733

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2018

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 and Article 10 of Regulation S-X. Accordingly, the financial statements do not contain all of the information and footnotes required by accounting principles generally accepted in the United States. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. The financial statements presented as of March 31, 2018 and 2017 and for the three-month periods then ended have not been audited. The consolidated balance sheet as of December 31, 2017 has been extracted from the audited financial statements included in United’s 2017 Annual Report to Shareholders. The accounting and reporting policies followed in the presentation of these financial statements are consistent with those applied in the preparation of the 2017 Annual Report of United on Form 10-K. To conform to the 2018 presentation, certain reclassifications have been made to prior period amounts, which had no impact on net income, comprehensive income, or stockholders’ equity. In the opinion of management, all adjustments necessary for a fair presentation of financial position and results of operations for the interim periods have been made. Such adjustments are of a normal and recurring nature.

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 February 2018, the FASB issued ASU No. 2018-03, “Technical Corrections and Improvements to Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.” ASU 2018-03 clarifies that entities that use the measurement alternative for equity securities without readily determinable fair values can change its measurement approach to fair value. This election is irrevocable and will apply to all future purchases of identical or similar investments of the same issuer. The amended guidance also clarifies that adjustments made under the measurement alternative should reflect the fair value of the security as of the date that an observable transaction took place rather than the current reporting date. Entities will use the prospective transition approach only for securities they elect to measure using the measurement alternative. ASU No. 2018-03 is effective for interim and annual reporting periods beginning after December 15, 2017; early adoption is permitted. ASU No. 2018-03 did not have a material impact on the Company’s financial condition or results of operations.

In February 2018, the FASB issued ASU No. 2018-02, “Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income,” to help organizations address certain stranded income tax effects in accumulated other comprehensive income (AOCI) resulting from the Tax Cuts and Jobs Act (the “Tax Act”). This ASU provides financial statement preparers with an option to reclassify stranded tax effects within AOCI to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Act (or portion thereof) is recorded. The amendments are effective for all organizations for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. Organizations should apply the proposed amendments either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Act is recognized. United adopted ASU No. 2018-02 in the first quarter of 2018 and reclassified $6,353 of stranded income tax effected amounts in AOCI to retained earnings.

In August 2017, the FASB issued ASU No. 2017-12, “Targeting Improvement to Accounting for Hedging Activities.” This ASU amends ASC 815 and its objectives are to improve the transparency and understandability of information conveyed to financial statement users about an entity’s risk management activities by better aligning the entity’s financial reporting for hedging relationships with those risk management activities and reduce the complexity and simplify the application of hedge accounting by preparers. ASU No. 2017-12 is effective for interim and annual reporting periods beginning after December 15, 2018; early adoption is permitted. ASU No. 2017-12 is not expected to have a material impact on the Company’s financial condition or results of operations.

In July 2017, the FASB issued ASU No. 2017-11, “Part I, Accounting for Certain Financial Instruments with Down Round Features and Part II, Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling interests with a Scope Exception.” Part I of this ASU simplifies the accounting for financial instruments that include down round features while the amendments in Part II, which do not have an accounting effect, address the difficulty of navigating the guidance in ASC 480, “Distinguishing Liabilities from Equity”, due to the existence of extensive pending content in the Codification. ASU No. 2017-11 is effective for interim and annual reporting periods beginning after December 15, 2018. ASU No. 2017-11 is not expected to have a material impact on the Company’s financial condition or results of operations.

In May 2017, the FASB issued ASU No. 2017-09, “Stock Compensation, Scope of Modification Accounting.” This ASU clarifies when changes to the terms of conditions of a share-based payment award must be accounted for as modifications. Companies will apply the modification accounting guidance if the value, vesting conditions or classification of the award changes. The new guidance should reduce diversity in practice and result in fewer changes to the terms of an award being accounted for as modifications, as the guidance will allow companies to make certain non-substantive changes to awards without accounting for them as modifications. It does not change the accounting for modifications. ASU No. 2017-09 is effective for interim and annual reporting periods beginning after December 15, 2017; early adoption is permitted. ASU No. 2017-09 did not have a material impact on the Company’s financial condition or results of operations.

In March 2017, the FASB issued ASU 2017-07, “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” ASU 2017-07 amends ASC 715, “Compensation - Retirement Benefits” and will change how employers that sponsor defined benefit pension and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. Employers will present the service cost component of net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. Only the service cost component will be eligible for capitalization in assets. Employers will present the other components of the net periodic benefit cost separately from the line item that includes the service cost and outside of any subtotal of operating income, if one is presented. These components will not be eligible for capitalization in assets. ASU 2017-07 was effective for United on January 1, 2018. The adoption of ASU 2017-07 had a slight change in presentation but did not materially impact the Company’s financial condition or results of operations. United used amounts previously disclosed in its Employee Benefits Plan footnote (Note 14) to retrospectively adjust prior period amounts of employee compensation and employee benefits within United’s Consolidated Statements of Income.

In January 2017, the FASB issued ASU 2017-04, “Intangibles – Goodwill and Other (topic 350).” ASU 2017-04 eliminates the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge. Instead, entities will record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value. ASU 2017-04 is effective for United on January 1, 2020, with early adoption permitted, and management is currently evaluating the possible impact this standard may have on the Company’s financial condition or results of operations.

In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805): Clarifying the Definition of a Business.” ASU 2017-01 changes the definition of a business to assist entities with evaluation when a set of transferred assets and activities is a business. The guidance requires an entity to evaluate if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets. The guidance also requires a business to include at least one substantive process and narrows the definition of outputs by more closely aligning it with how outputs are described in ASC 606. ASU 2017-01 was effective for United on January 1, 2018 and did not have a material impact on the Company’s financial condition or results of operations.

In August 2016, the FASB issued ASU 2016-15, “Classification of Certain Cash Receipts and Cash Payments.” ASU 2016-15 amends ASC topic 230 to add and clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows as a result of diversity in practice and in certain circumstances, financial statement restatements. Entities should apply ASU 2016-15 using a retrospective transition method to each period presented. ASU 2016-15 was effective for United on January 1, 2018 and did not have a material impact on the Company’s financial condition or results of operations.

In June 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses.” ASU 2016-13 changes the impairment model for most financial assets and certain other instruments that aren’t measured at fair value through net income. The standard will replace today’s “incurred loss” approach with an “expected loss” model for instruments measured at amortized cost and require entities to record allowances for available-for-sale debt securities rather than reduce the carrying amount under the current other-than-temporary impairment (OTTI) model. ASU 2016-13 also simplifies the accounting model for purchased credit-impaired debt securities and loans. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. ASU 2016-13 is effective for United on January 1, 2020, with early adoption permitted, and management is currently evaluating the possible impact this standard may have on the Company’s financial condition or results of operations.

In March 2016, the FASB issued ASU 2016-09, “Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.” ASU 2016-09 will change certain aspects of accounting for share-based payments to employees. The new guidance will, amongst other things, require all income tax effects of awards to be recognized in the income statement when the awards vest or are settled. The requirement to report those income tax effects in earnings was applied to settlements occurring on or after January 1, 2017 and the impact of applying that guidance reduced reporting income tax expense by $1,048 for the year of 2017. ASU 2016-09 also allows an employer to repurchase more of an employee’s shares than it could previously for tax withholding purposes without triggering liability accounting and make a policy election to account for forfeitures as they occur. The Company will continue to estimate the number of awards expected to be forfeited and adjust the estimate when it is no longer probable that the employee will fulfill the service condition, as was previously required. ASU 2016-09 also requires that all income tax-related cash flows resulting from share-based payments be reported as operating activities in the statement of cash flows. Previously, income tax benefits at settlement of an award were reported as a reduction to operating cash flows and an increase to financing cash flows to the extent that those benefits exceeded the income tax benefits reported in earnings during the award’s vesting period. The adoption of ASU 2016-09 did not have a material impact on the Company’s financial condition or results of operations.

In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)”. ASU 2016-02 includes a lessee accounting model that recognizes two types of leases, finance leases and operating leases, while lessor accounting will remain largely unchanged from the current GAAP. ASU 2016-02 requires, amongst other things, that a lessee recognize on the balance sheet a right-of-use asset and a lease liability for leases, which has not yet been quantified, with terms of more than twelve months. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee will depend on its classification as a finance or operating lease. ASU 2016-02 is effective for United on January 1, 2019. The Company is currently assessing the impact of the adoption of ASU 2016-02 on the Company’s results of operations, financial position and cash flows. Significant implementation matters being addressed by the Company include gathering, documenting and analyzing all leases to assess the impact on accounting and disclosures, evaluating and implementing a third-party lease accounting software solution, assessing the impact to its internal controls over financial reporting, and documenting the new lease accounting process.

In January 2016, the FASB issued ASU 2016-01, “Financial Instruments Overall: Recognition and Measurement of Financial Assets and Financial Liabilities.” ASU 2016-01 makes changes to the classification and measurement of investments in equity securities, the presentation of certain fair value changes for financial liabilities measured at fair value under the fair value option and disclosure of fair value of instruments. In addition, ASU 2016-01 clarifies guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. ASU 2016-01 was adopted by United on January 1, 2018 and did not have a significant impact on the Company’s financial condition or results of operations.

In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 supersedes the revenue recognition requirements in ASC topic 605, “Revenue Recognition”, and most industry-specific guidance throughout the ASC. The amendments require an entity to recognize revenue upon the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. The new revenue recognition standard sets forth a five-step principle-based approach for determining revenue recognition. For United, revenue is comprised of net interest income and noninterest income. As the standard does not apply to revenue associated with financial instruments, net interest income, gains and losses from securities, income from bank-owned life insurance (BOLI) and income from mortgage banking activities are not impacted by the standard. Based on a review and evaluation of a number of revenue contracts, United’s management determined that ASU 2014-09 impacts certain recurring revenue streams related to noninterest income such as fees from trust and brokerage services. However, based on an assessment of these revenue streams under the standard, management concluded that ASU 2014-09 does not have a material impact on the Company’s financial condition or results of operations. In addition, in the Company’s evaluation of the nature of its contracts with customers, United has determined that further disaggregation of revenue from contracts with customers into more granular categories beyond those presented in the Consolidated Statements of Income was not necessary. ASU 2014-09 was adopted by United on January 1, 2018 using the modified-retrospective transition method. No cumulative effect adjustment was made to the opening balance of retained earnings because the amount was considered immaterial. The impact of ASU 2014-09 for the first three months of 2018 were also immaterial to United’s consolidated financial position, results of operations, shareholders’ equity, cash flows and disclosures.

Descriptions of our revenue-generating activities that are within the scope of ASC topic 606, which are presented in our Consolidated Statements of Income as components of Other Income are discussed below. There are no significant judgements relating to the amount and timing of revenue recognition for those revenue streams under the scope of ASC topic 606.

Fees from Trust Services

Revenue from trust services primarily is comprised of fees earned from the management and administration of trusts and other customer assets. Trust services include custody of assets, investment management, escrow services, and similar fiduciary activities. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days after month end through a direct charge to customers’ accounts.

Fees from Brokerage Services

Revenue from brokerage services are recorded as the income is earned at the time the related service is performed. In return for such services, the Company charges a commission for the sales of various securities products primarily consisting of investment company shares, annuity products, and corporate debt and equity securities, for its selling and administrative efforts. For account supervision, advisory, and administrative services, revenue is recognized over a period of time as earned based on customer account balances and activity.

Fees from Deposit Services

Service charges on deposit accounts consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, check orders, ATM activity fees, debit card fees, and other deposit account related fees. Revenue is recognized when our performance obligation is completed which is generally monthly for account maintenance services or when a transaction has been completed (ATM or debit card activity).

Bankcard Fees and Merchant Discounts

Bankcard fees and merchant discounts are primarily comprised of credit card income and merchant services income. Credit card income is primarily comprised of interchange fees earned whenever the Company’s credit cards are processed through card payment networks such as Visa. Merchant services income mainly represents fees charged to merchants to process their credit card transactions. The Company’s performance obligation for bankcard fees and exchange are largely satisfied, and related revenue recognized at the time services are rendered. Payment is typically received immediately or in the following month.

Fair Value Measurement

United determines the fair values of its financial instruments based on the fair value hierarchy established by 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.

The Fair Value Measurements and Disclosures topic 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 prices, inputs and 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.

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Mergers and Acquisitions (Tables)

3 Months Ended

Mar. 31, 2018

Schedule of Acquired Loans Accounted for at Fair Value

In conjunction with the Cardinal merger, the acquired loan portfolio was accounted for at fair value as follows:

	April 21, 2017
Contractually required principal and interest at acquisition	$	4,211,734
Contractual cash flows not expected to be collected		(56,176	)
Expected cash flows at acquisition		4,155,558
Interest component of expected cash flows		(986,959	)
Basis in acquired loans at acquisition – estimated fair value	$	3,168,599

Cardinal Financial Corporation [Member]

Schedule of Fair Value of Acquired Identifiable Assets and Liabilities Assumed

The consideration paid for Cardinal’s common equity and the preliminary amounts of acquired identifiable assets and liabilities assumed as of the Cardinal Acquisition Date were as follows:

Purchase price:
Value of common shares issued (23,690,589 shares)	$	972,499
Fair value of stock options assumed		2,741
Cash for fractional shares		14
Total purchase price		975,254
Identifiable assets:
Cash and cash equivalents		44,545
Investment securities		395,829
Loans held for sale		271,301
Loans		3,168,599
Premises and equipment		24,208
Core deposit intangibles		28,724
George Mason trade name intangible		1,080
Other assets		135,383
Total identifiable assets	$	4,069,669
Identifiable liabilities:
Deposits	$	3,349,812
Short-term borrowings		96,215
Long-term borrowings		220,119
Unfavorable lease liability		2,281
Other liabilities		39,474
Total identifiable liabilities		3,707,901
Preliminary fair value of net assets acquired including identifiable intangible assets		361,768
Preliminary resulting goodwill	$	613,486

Schedule of Business Acquisition Pro Forma Information

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, 2017
Total Revenues (1)	$	191,052
Net Income		54,710

⁽¹⁾  Represents net interest income plus other income

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Investment Securities (Tables)

3 Months Ended

Mar. 31, 2018

Summary of Amortized Cost and Estimated Fair Values of Available for Sale Securities

The amortized cost and estimated fair values of securities available for sale are summarized as follows.

	March 31, 2018
			Gross		Gross		Estimated		Cumulative
	Amortized		Unrealized		Unrealized		Fair		OTTI in
	Cost		Gains		Losses		Value		AOCI (1)
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	163,718	$	237	$	849	$	163,106	$	0
State and political subdivisions		297,481		1,300		5,069		293,712		0
Residential mortgage-backed securities
Agency		934,557		993		20,003		915,547		0
Non-agency		4,665		501		0		5,166		86
Commercial mortgage-backed securities
Agency		485,851		281		9,353		476,779		0
Asset-backed securities		146,774		285		475		146,584		0
Trust preferred collateralized debt obligations		9,192		0		1,128		8,064		2,586
Single issue trust preferred securities		13,433		327		614		13,146		0
Other corporate securities		63,400		337		730		63,007		0
Total	$	2,119,071	$	4,261	$	38,221	$	2,085,111	$	2,672
	December 31, 2017
			Gross		Gross		Estimated		Cumulative
	Amortized		Unrealized		Unrealized		Fair		OTTI in
	Cost		Gains		Losses		Value		AOCI (1)
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	114,735	$	385	$	362	$	114,758	$	0
State and political subdivisions		303,101		3,197		2,429		303,869		0
Residential mortgage-backed securities
Agency		821,857		2,096		9,360		814,593		0
Non-agency		4,969		543		0		5,512		86
Commercial mortgage-backed securities
Agency		457,107		1,059		3,309		454,857		0
Asset-backed securities		109,829		148		7		109,970		0
Trust preferred collateralized debt obligations		37,856		542		4,129		34,269		20,770
Single issue trust preferred securities		13,417		368		1,225		12,560		0
Other corporate securities		28,101		407		18		28,490		0
Marketable equity securities		9,712		179		13		9,878		0
Total	$	1,900,684	$	8,924	$	20,852	$	1,888,756	$	20,856

(1) Non-credit related other-than-temporary impairment in accumulated other comprehensive income. Amounts are before-tax.

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, 2018 and December 31, 2017.

	Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
March 31, 2018
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	65,919	$	722	$	22,751	$	127
State and political subdivisions		137,221		1,584		55,674		3,485
Residential mortgage-backed securities
Agency		682,082		13,128		172,052		6,875
Non-agency		0		0		0		0
Commercial mortgage-backed securities
Agency		391,087		7,961		60,595		1,392
Asset-backed securities		56,833		475		0		0
Trust preferred collateralized debt obligations		0		0		5,049		1,128
Single issue trust preferred securities		0		0		5,100		614
Other corporate securities		41,634		730		0		0
Total	$	1,374,776	$	24,600	$	321,221	$	13,621
	Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
December 31, 2017
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	36,678	$	230	$	22,920	$	132
State and political subdivisions		82,896		566		59,432		1,863
Residential mortgage-backed securities
Agency		460,414		4,621		182,482		4,739
Non-agency		0		0		0		0
Commercial mortgage-backed securities
Agency		282,858		2,386		70,763		923
Asset-backed securities		27,931		7		0		0
Trust preferred collateralized debt obligations		0		0		28,629		4,129
Single issue trust preferred securities		0		0		4,485		1,225
Other corporate securities		6,975		18		0		0
Marketable equity securities		0		0		363		13
Total	$	897,752	$	7,828	$	369,074	$	13,024

Summary of Gains or Losses on Proceeds from Maturities, Sales and Calls of Available for Sale Securities by Specific Identification Method

The realized losses relate to sales of securities within a rabbi trust for the payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries.

	Three Months Ended March  31
	2018		2017
Proceeds from sales and calls	$	99,703	$	98,798
Gross realized gains		1,163		214
Gross realized losses		1,312		0

Roll Forward of Credit Losses on Securities

Below is a progression of the credit losses on securities which United has recorded other-than-temporary charges. These charges were recorded through earnings and other comprehensive income.

	Three Months Ended March  31
	2018			2017
Balance of cumulative credit losses at beginning of period	$	18,060		$	22,162
Additions for credit losses recognized in earnings during the period:
Additional credit losses on securities for which OTTI was previously recognized		0			0
Reductions for securities sold or paid off during the period		(14,861	)		0
Balance of cumulative credit losses at end of period	$	3,199		$	22,162

Summary of Amortized Cost and Estimated Fair Values of Securities Held to Maturity

The amortized cost and estimated fair values of securities held to maturity are summarized as follows:

	March 31, 2018
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	5,160	$	241	$	0	$	5,401
State and political subdivisions		5,797		9		0		5,806
Residential mortgage-backed securities
Agency		23		3		0		26
Single issue trust preferred securities		9,405		0		652		8,753
Other corporate securities		20		0		0		20
Total	$	20,405	$	253	$	652	$	20,006
	December 31, 2017
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	5,187	$	308	$	0	$	5,495
State and political subdivisions		5,797		10		0		5,807
Residential mortgage-backed securities
Agency		23		3		0		26
Single issue trust preferred securities		9,401		0		731		8,670
Other corporate securities		20		0		0		20
Total	$	20,428	$	321	$	731	$	20,018

Summary of Equity Securities

Prior to March 31, 2018 and the adoption of ASU 2016-01, equity securities were included in available for sale securities.

	Three Months Ended March  31, 2018
Net gains (losses) recognized during the period	$	(36	)
Net gains (losses) recognized during the period on equity securities sold		2
Unrealized gains recognized during the period on equity securities still held at period end		39
Unrealized losses recognized during the period on equity securities still held at period end		77

Available-for-sale Securities [Member]

Summary of Maturities of Debt Securities Held to Maturity by Amortized Cost and Estimated Fair Value

Expected maturities may differ from contractual maturities because the issuers may have the right to call or prepay obligations without penalties.

	March 31, 2018				December 31, 2017
			Estimated				Estimated
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	52,863	$	52,753	$	50,311	$	50,212
Due after one year through five years		476,361		471,410		386,039		384,585
Due after five years through ten years		445,861		436,757		400,129		398,208
Due after ten years		1,143,986		1,124,191		1,054,493		1,045,873
Marketable equity securities		0		0		9,712		9,878
Total	$	2,119,071	$	2,085,111	$	1,900,684	$	1,888,756

Held-to-maturity Securities [Member]

Summary of Maturities of Debt Securities Held to Maturity by Amortized Cost and Estimated Fair Value

Expected maturities may differ from contractual maturities because the issuers may have the right to call or prepay obligations without penalties.

	March 31, 2018				December 31, 2017
			Estimated				Estimated
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	0	$	0	$	0	$	0
Due after one year through five years		9,318		9,566		9,344		9,660
Due after five years through ten years		8,091		7,618		5,663		5,343
Due after ten years		2,996		2,822		5,421		5,015
Total	$	20,405	$	20,006	$	20,428	$	20,018

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Loans (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Major Classes of Loans

Major classes of loans are as follows:

	March 31, 2018		December 31, 2017
Commercial, financial and agricultural:
Owner-occupied commercial real estate	$	1,366,980	$	1,361,629
Nonowner-occupied commercial real estate		4,426,776		4,451,298
Other commercial loans		1,952,322		1,998,979
Total commercial, financial & agricultural		7,746,078		7,811,906
Residential real estate		3,065,990		2,996,171
Construction & land development		1,433,125		1,504,907
Consumer:
Bankcard		9,372		10,314
Other consumer		743,870		704,039
Total gross loans	$	12,998,435	$	13,027,337

Activity for Accretable Yield

Activity for the accretable yield for the first three months of 2018 follows:

Accretable yield at the beginning of the period	$	39,098
Accretion (including cash recoveries)		(4,053	)
Additions		0
Net reclassifications to accretable from non-accretable		4,493
Disposals (including maturities, foreclosures, and charge-offs)		(1,948	)
Accretable yield at the end of the period	$	37,590

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Credit Quality (Tables)

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

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, 2017, segregated by class of loans.

	Troubled Debt Restructurings
	For the Three Months Ended
	March 31, 2017
	Number of Contracts		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment
Commercial real estate:
Owner-occupied		0	$	0	$	0
Nonowner-occupied		0		0		0
Other commercial		4		2,752		2,741
Residential real estate		0		0		0
Construction & land development		1		1,456		1,450
Consumer:
Bankcard		0		0		0
Other consumer		0		0		0
Total		5	$	4,208	$	4,191

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, segregated by class of loans:

Age Analysis of Past Due Loans

As of March 31, 2018

	30-89 Days Past Due		90 Days or more  Past Due		Total Past Due		Current & Other (1)		Total Financing Receivables		Recorded Investment >90 Days & Accruing
Commercial real estate:
Owner-occupied	$	13,303	$	18,862	$	32,165	$	1,334,815	$	1,366,980	$	847
Nonowner-occupied		7,248		19,294		26,542		4,400,234		4,426,776		139
Other commercial		35,269		59,412		94,681		1,857,641		1,952,322		962
Residential real estate		30,344		25,641		55,985		3,010,005		3,065,990		6,027
Construction & land development		3,138		18,403		21,541		1,411,584		1,433,125		152
Consumer:
Bankcard		185		121		306		9,066		9,372		121
Other consumer		6,417		1,196		7,613		736,257		743,870		917
Total	$	95,904	$	142,929	$	238,833	$	12,759,602	$	12,998,435	$	9,165

(1) Other includes loans with a recorded investment of $189,675 acquired and accounted for under ASC topic 310-30 “Loans and Debt Securities Acquired with Deteriorated Credit Quality”.

Age Analysis of Past Due Loans

As of December 31, 2017

	30-89 Days Past Due		90 Days or more  Past Due		Total Past Due		Current & Other (1)		Total Financing Receivables		Recorded Investment >90  Days & Accruing
Commercial real estate:
Owner-occupied	$	7,968	$	13,663	$	21,631	$	1,339,998	$	1,361,629	$	458
Nonowner-occupied		10,398		20,448		30,846		4,420,452		4,451,298		634
Other commercial		11,533		68,476		80,009		1,918,970		1,998,979		940
Residential real estate		35,300		28,637		63,937		2,932,234		2,996,171		6,519
Construction & land development		1,615		17,190		18,805		1,486,102		1,504,907		385
Consumer:
Bankcard		449		186		635		9,679		10,314		186
Other consumer		9,288		968		10,256		693,783		704,039		775
Total	$	76,551	$	149,568	$	226,119	$	12,801,218	$	13,027,337	$	9,897

(1) Other includes loans with a recorded investment of $210,521 acquired and accounted for under ASC topic 310-30 “Loans and Debt Securities Acquired with Deteriorated Credit Quality”.

Schedule of Nonaccrual Loans, Segregated by Class of Loans

The following table sets forth United’s nonaccrual loans, segregated by class of loans:

Loans on Nonaccrual Status

	March  31, 2018		December 31, 2017
Commercial real estate:
Owner-occupied	$	18,015	$	13,205
Nonowner-occupied		19,155		19,814
Other commercial		58,450		67,536
Residential real estate		19,614		22,118
Construction & land development		18,251		16,805
Consumer:
Bankcard		0		0
Other consumer		279		193
Total	$	133,764	$	139,671

Schedule of Credit Quality Indicators Information, by Class of Loans

The following tables set forth United’s credit quality indicators information, by class of loans:

Credit Quality Indicators

Corporate Credit Exposure

As of March 31, 2018
	Commercial Real Estate				Other Commercial		Construction & Land Development
	Owner- occupied		Nonowner- occupied
Grade:
Pass	$	1,291,287	$	4,250,743	$	1,820,513	$	1,349,638
Special mention		14,448		72,997		51,165		3,779
Substandard		61,245		103,036		77,848		79,708
Doubtful		0		0		2,796		0
Total	$	1,366,980	$	4,426,776	$	1,952,322	$	1,433,125
As of December 31, 2017
	Commercial Real Estate				Other Commercial		Construction &  Land Development
	Owner- occupied		Nonowner- occupied
Grade:
Pass	$	1,276,088	$	4,312,985	$	1,848,868	$	1,413,706
Special mention		20,165		57,618		55,564		5,196
Substandard		65,376		80,695		90,625		86,005
Doubtful		0		0		3,922		0
Total	$	1,361,629	$	4,451,298	$	1,998,979	$	1,504,907

Credit Quality Indicators

Consumer Credit Exposure

As of March 31, 2018
	Residential Real Estate		Bankcard		Other Consumer
Grade:
Pass	$	3,011,824	$	9,066	$	736,184
Special mention		20,738		185		6,460
Substandard		33,428		121		1,226
Doubtful		0		0		0
Total	$	3,065,990	$	9,372	$	743,870
As of December 31, 2017
	Residential Real Estate		Bankcard		Other Consumer
Grade:
Pass	$	2,945,266	$	9,679	$	693,727
Special mention		18,025		449		9,334
Substandard		32,880		186		978
Doubtful		0		0		0
Total	$	2,996,171	$	10,314	$	704,039

Schedule of Impaired Loans Information by Class of Loans

The following table sets forth United’s impaired loans information, by class of loans:

	Impaired Loans
	March 31, 2018						December 31, 2017
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	75,776	$	75,941	$	0	$	78,117	$	78,419	$	0
Nonowner-occupied		117,589		117,648		0		134,136		134,195		0
Other commercial		52,394		54,953		0		46,993		49,552		0
Residential real estate		24,125		24,787		0		26,751		28,202		0
Construction & land development		48,320		53,084		0		52,279		59,691		0
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		42		42		0		15		15		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	5,873	$	5,873	$	1,075	$	9,132	$	9,132	$	2,251
Nonowner-occupied		8,543		8,543		1,471		7,797		7,797		1,592
Other commercial		48,082		55,905		16,180		60,512		70,396		16,721
Residential real estate		11,887		13,438		1,742		9,813		10,418		1,552
Construction & land development		2,015		4,664		217		1,383		1,383		229
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		0		0		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	81,649	$	81,814	$	1,075	$	87,249	$	87,551	$	2,251
Nonowner-occupied		126,132		126,191		1,471		141,933		141,992		1,592
Other commercial		100,476		110,858		16,180		107,505		119,948		16,721
Residential real estate		36,012		38,225		1,742		36,564		38,620		1,552
Construction & land development		50,335		57,748		217		53,662		61,074		229
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		42		42		0		15		15		0

	Impaired Loans
	For the Three Months Ended
	March 31, 2018				March 31, 2017
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	76,947	$	377	$	55,857	$	421
Nonowner-occupied		125,863		120		82,528		117
Other commercial		49,693		206		49,286		220
Residential real estate		25,437		83		21,814		41
Construction & land development		50,300		103		35,949		76
Consumer:
Bankcard		0		0		0		0
Other consumer		28		0		36		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	7,502	$	25	$	7,663	$	137
Nonowner-occupied		8,170		59		16,096		83
Other commercial		54,297		19		58,824		370
Residential real estate		10,850		0		13,113		8
Construction & land development		1,699		20		4,161		21
Consumer:
Bankcard		0		0		0		0
Other consumer		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	84,449	$	402	$	63,520	$	558
Nonowner-occupied		134,033		179		98,624		200
Other commercial		103,990		225		108,110		590
Residential real estate		36,287		83		34,927		49
Construction & land development		51,999		123		40,110		97
Consumer:
Bankcard		0		0		0		0
Other consumer		28		0		36		0

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Allowance for Credit Losses (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Schedule of Allowance for Loan Losses and Carrying Amount of Loans

A progression of the allowance for loan losses, by portfolio segment, for the periods indicated is summarized as follows:

Allowance for Loan Losses and Carrying Amount of Loans

For the Three Months Ended March 31, 2018

	Commercial Real Estate									Construction					Allowance for
	Owner- occupied			Nonowner- occupied		Other Commercial		Residential Real Estate		& Land Development			Consumer		Estimated Imprecision		Total
Allowance for Loan Losses:
Beginning balance	$	5,401		$	6,369	$	45,189	$	9,927	$	7,187		$	2,481	$	73	$	76,627
Charge-offs		1,015			0		2,868		910		460			605		0		5,858
Recoveries		55			136		106		264		2			143		0		706
Provision		(722	)		269		4,490		972		(300	)		372		97		5,178
Ending balance	$	3,719		$	6,774	$	46,917	$	10,253	$	6,429		$	2,391	$	170	$	76,653
Ending Balance: individually evaluated for impairment	$	1,075		$	1,471	$	16,180	$	1,742	$	217		$	0	$	0	$	20,685
Ending Balance: collectively evaluated for impairment	$	2,644		$	5,303	$	30,737	$	8,511	$	6,212		$	2,391	$	170	$	55,968
Ending Balance: loans acquired with deteriorated credit quality	$	0		$	0	$	0	$	0	$	0		$	0	$	0	$	0
Financing receivables:
Ending balance	$	1,366,980		$	4,426,776	$	1,952,322	$	3,065,990	$	1,433,125		$	753,242	$	0	$	12,998,435
Ending Balance: individually evaluated for impairment	$	33,438		$	22,868	$	71,478	$	13,856	$	16,909		$	0	$	0	$	158,549
Ending Balance: collectively evaluated for impairment	$	1,301,725		$	4,310,587	$	1,853,603	$	3,039,123	$	1,391,948		$	753,225	$	0	$	12,650,211
Ending Balance: loans acquired with deteriorated credit quality	$	31,817		$	93,321	$	27,241	$	13,011	$	24,268		$	17	$	0	$	189,675

Allowance for Loan Losses and Carrying Amount of Loans

For the Year Ended December 31, 2017

	Commercial Real Estate											Construction					Allowance for
	Owner- occupied			Nonowner- occupied			Other Commercial		Residential Real  Estate			&  Land Development			Consumer		Estimated Imprecision			Total
Allowance for Loan Losses:
Beginning balance	$	5,273		$	6,883		$	33,087	$	13,770		$	10,606		$	2,805	$	347		$	72,771
Charge-offs		2,246			296			21,189		2,973			3,337			2,822		0			32,863
Recoveries		2,599			244			3,395		601			726			748		0			8,313
Provision		(225	)		(462	)		29,896		(1,471	)		(808	)		1,750		(274	)		28,406
Ending balance	$	5,401		$	6,369		$	45,189	$	9,927		$	7,187		$	2,481	$	73		$	76,627
Ending Balance: individually evaluated for impairment	$	2,251		$	1,592		$	16,721	$	1,552		$	229		$	0	$	0		$	22,345
Ending Balance: collectively evaluated for impairment	$	3,150		$	4,777		$	28,468	$	8,375		$	6,958		$	2,481	$	73		$	54,282
Ending Balance: loans acquired with deteriorated credit quality	$	0		$	0		$	0	$	0		$	0		$	0	$	0		$	0
Financing receivables:
Ending balance	$	1,361,629		$	4,451,298		$	1,998,979	$	2,996,171		$	1,504,907		$	714,353	$	0		$	13,027,337
Ending Balance: individually evaluated for impairment	$	36,721		$	21,851		$	78,715	$	14,316		$	16,921		$	0	$	0		$	168,524
Ending Balance: collectively evaluated for impairment	$	1,291,379		$	4,320,997		$	1,892,706	$	2,967,666		$	1,461,206		$	714,338	$	0		$	12,648,292
Ending Balance: loans acquired with deteriorated credit quality	$	33,529		$	108,450		$	27,558	$	14,189		$	26,780		$	15	$	0		$	210,521

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Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

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, 2018
	Community Banking					Mortgage Banking					Total
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Core deposit intangible assets	$	98,359	($	56,463	)	$	0	($	0	)	$	98,359	($	56,463	)
Non-amortized intangible assets:
George Mason trade name	$	0				$	1,080				$	1,080
Goodwill not subject to amortization	$	1,473,265				$	5,315				$	1,478,580

	December 31, 2017
	Community Banking					Mortgage Banking				Total
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Core deposit intangible assets	$	98,359	($	54,453	)	$	0	$	0	$	98,359	($	54,453	)
Non-amortized intangible assets:
George Mason trade name	$	0				$	1,080			$	1,080
Goodwill not subject to amortization	$	1,473,265				$	5,115			$	1,478,380

Reconciliation of Goodwill

The following table provides a reconciliation of goodwill:

	Community Banking		Mortgage Banking		Total
Goodwill at December 31, 2017	$	1,473,265	$	5,115	$	1,478,380
Preliminary addition to goodwill from Cardinal acquisition		0		200		200
Goodwill at March 31, 2018	$	1,473,265	$	5,315	$	1,478,580

Schedule of Anticipated Amortization Expense

The following table sets forth the anticipated amortization expense for intangible assets for the years subsequent to 2017:

Year	Amount
2018	$	8,039
2019		7,016
2020		6,309
2021		5,369
2022 and thereafter		17,173

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Long-Term Borrowings (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Schedule of Maturities of Long-term Borrowings

The scheduled maturities of these FHLB borrowings are as follows:

Year	Amount
2018	$	746,863
2019		187,516
2020		42,013
2021		52,693
2022 and thereafter		31,863
Total	$	1,060,948

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Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2018

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, 2018 and December 31, 2017.

	Asset Derivatives
	March 31, 2018						December 31, 2017
	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	$	88,679	$	2,514		Other assets	$	71,831	$	538
Total derivatives designated as hedging instruments			$	88,679	$	2,514			$	71,831	$	538
Derivatives not designated as hedging instruments
Forward loan sales commitments		Other assets	$	15,712	$	73		Other assets	$	31,024	$	2
Interest rate lock commitments		Other assets		195,330		5,610		Other assets		148,866		4,559
Total derivatives not designated as hedging instruments			$	211,042	$	5,683			$	179,890	$	4,561
Total asset derivatives			$	299,721	$	8,197			$	251,721	$	5,099

	Liability Derivatives
	March 31, 2018						December 31, 2017
	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	$	0	$	0	Other liabilities	$	18,795	$	165
Total derivatives designated as hedging instruments			$	0	$	0		$	18,795	$	165
Derivatives not designated as hedging instruments
TBA mortgage-backed securities		Other liabilities	$	258,000	$	762	Other liabilities	$	236,500	$	312
Interest rate lock commitments		Other liabilities		0		0	Other liabilities		0		0
Total derivatives not designated as hedging instruments			$	258,000	$	762		$	236,500	$	312
Total liability derivatives			$	258,000	$	762		$	255,295	$	477

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, 2018 and 2017 are presented as follows:

			Three Months Ended
	Income  Statement Location		March 31, 2018			March 31, 2017
Derivatives in hedging relationships Fair Value Hedges:
Interest rate swap contracts		Interest income/(expense)	$	(42	)	$	(158	)
Total derivatives in hedging relationships			$	(42	)	$	(158	)
Derivatives not designated as hedging instruments
Forward loan sales commitments		Income from Mortgage Banking Activities	$	73		$	0
TBA mortgage-backed securities		Income from Mortgage Banking Activities		(450	)		0
Interest rate lock commitments		Income from Mortgage Banking Activities		(1,269	)		0
Total derivatives not designated as hedging instruments			$	(1,646	)	$	0
Total derivatives			$	(1,688	)	$	(158	)

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

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, 2018 and December 31, 2017, segregated by the level of the valuation inputs within the fair value hierarchy.

			Fair Value at March 31, 2018 Using
Description	Balance as of March  31, 2018		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 securities:
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	163,106	$	0	$	163,106	$	0
State and political subdivisions		293,712		0		293,712		0
Residential mortgage-backed securities

			Fair Value at March 31, 2018 Using
Description	Balance as of March  31, 2018		Quoted Prices in  Active Markets  for Identical Assets (Level  1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Agency		915,547		0		915,547		0
Non-agency		5,166		0		5,166		0
Commercial mortgage-backed securities
Agency		476,779		0		476,779		0
Asset-backed securities		146,584		0		146,584		0
Trust preferred collateralized debt obligations		8,064		0		0		8,064
Single issue trust preferred securities		13,146		0		13,146		0
Other corporate securities		63,007		7,036		55,971		0
Total available for sale securities		2,085,111		7,036		2,070,011		8,064
Equity securities:
Financial services industry		485		485		0		0
Equity mutual funds (1)		6,007		6,007		0		0
Other equity securities		4,668		4,668		0		0
Total equity securities		11,160		11,160		0		0
Loans held for sale		192,673		0		0		192,673
Derivative financial assets:
Interest rate swap contracts		2,514		0		2,514		0
Forward sales commitments		73		0		73		0
Interest rate lock commitments		5,610		0		0		5,610
Total derivative financial assets		8,197		0		2,587		5,610
Liabilities
Derivative financial liabilities:
TBA mortgage-backed securities		762		0		762		0
Total derivative financial liabilities		762		0		762		0

(1) The equity mutual funds are within a rabbi trust for the payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries.

			Fair Value at December 31, 2017 Using
Description	Balance as of December  31, 2017		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	$	114,758	$	0	$	114,758	$	0
State and political subdivisions		303,869		0		303,869		0
Residential mortgage-backed securities
Agency		814,593		0		814,593		0
Non-agency		5,512		0		5,512		0
Commercial mortgage-backed securities
Agency		454,857		0		454,857		0
Asset-backed securities		109,970		0		109,970		0
Trust preferred collateralized debt obligations		34,269		0		0		34,269

			Fair Value at December 31, 2017 Using
Description	Balance as of December  31, 2017		Quoted Prices in  Active Markets  for Identical Assets (Level  1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Single issue trust preferred securities		12,560		0		12,560		0
Other corporate securities		28,490		0		28,490		0
Total available for sale debt securities		1,878,878		0		1,844,609		34,269
Available for sale equity securities:
Financial services industry		3,545		331		3,214		0
Equity mutual funds (1)		6,332		6,332		0		0
Other equity securities		1		1		0		0
Total available for sale equity securities		9,878		6,664		3,214		0
Total available for sale securities		1,888,756		6,664		1,847,823		34,269
Loans held for sale		263,308		0		0		263,308
Derivative financial assets:
Interest rate swap contracts		538		0		538		0
Interest rate lock commitments		4,561		0		2		4,559
Total derivative financial assets		5,099		0		540		4,559
Liabilities
Derivative financial liabilities:
Interest rate swap contracts		165		0		165		0
TBA mortgage-backed securities		312		0		312		0
Total derivative financial liabilities		477		0		477		0

(1) The equity mutual funds are within a rabbi trust for the payment of benefits under a deferred compensation plan for certain key officers of United and its subsidiaries.

Schedule of Additional Information about Financial Assets and Liabilities Measured at Fair Value Utilized Level 3

The following table presents additional information about financial assets and liabilities measured at fair value at March 31, 2018 and December 31, 2017 on a recurring basis and for which United has utilized Level 3 inputs to determine fair value:

	Available-for-sale Securities
	Trust preferred collateralized  debt obligations
	March 31, 2018			December 31, 2017
Balance, beginning of period	$	34,269		$	33,552
Total gains or losses (realized/unrealized):
Included in earnings (or changes in net assets)		28			9
Included in other comprehensive income		217			8,757
Purchases, issuances, and settlements		0			0
Sales		(26,450	)		(8,049	)
Transfers in and/or out of Level 3		0			0
Balance, end of period	$	8,064		$	34,269
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 relating to assets still held at reporting date	$	0		$	0

	Loans held for sale
	March 31, 2018			December 31, 2017
Balance, beginning of period	$	263,308		$	0
Acquired in Cardinal merger		0			271,301
Originations		573,732			2,333,927
Sales		(631,834	)		(2,408,945	)
Total gains or losses during the period recognized in earnings		14,883			58,132
Transfers in and/or out of Level 3		(27,416	)		8,893
Balance, end of period	$	192,673		$	263,308
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 relating to assets still held at reporting date	$	0		$	0

	Derivative Financial  Assets Interest Rate Lock Commitments
	March 31, 2018		December 31, 2017
Balance, beginning of period	$	4,559	$	0
Acquired in Cardinal merger		0		10,393
Transfers other		1,051		(5,834	)
Balance, end of period	$	5,610	$	4,559
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 relating to assets still held at reporting date	$	0	$	0

Schedule of Changes in Fair Value Included in Earnings of Financial Instruments for which Fair Value Option has been Elected

The following table reflects the change in fair value included in earnings of financial instruments for which the fair value option has been elected:

Description	Three Months  Ended March 31, 2018			Three Months  Ended March 31, 2017
Assets
Loans held for sale
Income from mortgage banking activities	$	(1,719	)	$	0

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, 2018						December 31, 2017
Description	Unpaid Principal Balance		Fair Value		Fair Value Over/(Under) Unpaid Principal Balance		Unpaid Principal Balance		Fair Value		Fair Value Over/(Under) Unpaid Principal Balance
Assets
Loans held for sale	$	188,998	$	192,673	$	3,675	$	257,674	$	263,308	$	5,634

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:

			Carrying value at March 31, 2018
Description	Balance as of March  31, 2018		Quoted Prices in  Active Markets  for Identical Assets (Level  1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		YTD Losses
Assets
Loans held for sale	$	1,242	$	0	$	1,242	$	0	$	0
Impaired Loans		76,400		0		56,632		19,768		1,376
OREO		22,778		0		22,702		76		585
			Carrying value at December 31, 2017
Description	Balance as of December 31, 2017		Quoted Prices in  Active Markets  for Identical Assets (Level  1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		YTD Losses
Assets
Loans held for sale	$	2,647	$	0	$	2,647	$	0	$	14
Impaired Loans		88,637		0		70,950		17,687		12,291
OREO		24,348		0		24,151		197		4,200

Summary of Estimated Fair Values of Financial Instruments

The estimated fair values of United’s financial instruments, including those measured at amortized cost on the balance sheet, are summarized below:

					Fair Value Measurements
	Carrying Amount		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, 2018
Cash and cash equivalents	$	1,139,170	$	1,139,170	$	0	$	1,139,170	$	0
Securities available for sale		2,085,111		2,085,111		7,036		2,070,011		8,064
Securities held to maturity		20,405		20,006		0		16,986		3,020
Equity securities		11,160		11,160		11,160		0		0
Other securities		152,287		144,673		0		0		144,673
Loans held for sale		193,915		193,915		0		1,242		192,673
Loans		12,907,764		12,207,257		0		0		12,207,257
Derivative financial assets		8,197		8,197		0		2,587		5,610
Deposits		13,646,168		13,611,626		0		13,611,626		0
Short-term borrowings		218,386		218,386		0		218,386		0
Long-term borrowings		1,344,909		1,317,352		0		1,317,352		0
Derivative financial liabilities		762		762		0		762		0
December 31, 2017
Cash and cash equivalents	$	1,666,167	$	1,666,167	$	0	$	1,666,167	$	0
Securities available for sale		1,888,756		1,888,756		6,664		1,847,823		34,269
Securities held to maturity		20,428		20,018		0		16,998		3,020
Other securities		162,461		154,338		0		0		154,338
Loans held for sale		265,955		265,955		0		2,647		263,308
Loans		12,934,794		12,437,797		0		0		12,437,797
Derivative financial assets		5,099		5,099		0		540		4,559
Deposits		13,830,591		14,024,720		0		14,024,720		0
Short-term borrowings		477,587		477,587		0		477,587		0
Long-term borrowings		1,363,977		1,338,754		0		1,338,754		0
Derivative financial liabilities		477		477		0		477		0

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Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Stock Option Plans

A summary of activity under United’s stock option plans as of March 31, 2018, and the changes during the first three months of 2018 are presented below:

	Three Months Ended March 31, 2018
						Weighted Average
	Shares			Aggregate Intrinsic Value		Remaining Contractual Term (Yrs.)		Exercise Price
Outstanding at January 1, 2018		1,558,438						$	31.09
Granted		276,192							37.60
Exercised		(15,043	)						19.97
Forfeited or expired		(2,438	)						39.16
Outstanding at March 31, 2018		1,817,149		$	9,046,231		6.3	$	32.16
Exercisable at March 31, 2018		1,222,889		$	9,027,432		4.9	$	28.57

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 2018:

	Shares			Weighted-Average Grant Date Fair Value Per Share
Nonvested at January 1, 2018		507,871		$	7.89
Granted		276,192			7.56
Vested		(187,365	)		7.52
Forfeited or expired		(2,438	)		7.75
Nonvested at March 31, 2018		594,260		$	7.85

Changes to United's Restricted Common Shares

The following summarizes the changes to United’s restricted common shares for the period ended March 31, 2018:

	Number of Shares			Weighted-Average Grant Date Fair Value Per Share
Outstanding at January 1, 2018		170,496		$	40.05
Granted		97,004			37.60
Vested		(62,285	)		37.59
Forfeited		(683	)		39.15
Outstanding at March 31, 2018		204,532		$	39.64

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Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2018

Retirement Benefits [Abstract]

Net Periodic Pension Cost

Net periodic pension cost for the three months ended March 31, 2018 and 2017 included the following components:

	Three Months Ended March 31
	2018			2017
Service cost	$	658		$	562
Interest cost		1,295			1,265
Expected return on plan assets		(2,522	)		(2,027	)
Amortization of transition asset		0			0
Recognized net actuarial loss		1,149			1,087
Amortization of prior service cost		0			0
Net periodic pension (benefit) cost	$	580		$	887
Weighted-Average Assumptions:
Discount rate		3.83	%		4.49	%
Expected return on assets		7.00	%		7.00	%
Rate of compensation increase (prior to age 45)		3.50	%		3.50	%
Rate of compensation increase		3.00	%		3.00	%

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Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Components of Total Comprehensive Income

The components of total comprehensive income for the three months ended March 31, 2018 and 2017 are as follows:

	Three Months Ended March 31
	2018			2017
Net Income	$	61,706		$	38,809
Available for sale (“AFS”) securities:
AFS securities with OTTI charges during the period		0			(44	)
Related income tax effect		0			16
Less : OTTI charges recognized in net income		0			44
Related income tax benefit		0			(16	)
Reclassification of previous noncredit OTTI to credit OTTI		0			0
Related income tax benefit		0			0
Net unrealized gain (loss) on AFS securities with OTTI		0			0
AFS securities – all other:
Change in net unrealized gain on AFS securities arising during the period		(22,017	)		5,576
Related income tax effect		5,130			(2,063	)
Net reclassification adjustment for losses (gains) included in net income		149			(214	)
Related income tax (benefit) expense		(35	)		79
		(16,773	)		3,378
Net effect of AFS securities on other comprehensive income		(16,773	)		3,378
Held to maturity (“HTM”) securities:
Accretion on the unrealized loss for securities transferred from AFS to the HTM investment portfolio prior to call or maturity		2			2
Related income tax expense		(1	)		(1	)
Net effect of HTM securities on other comprehensive income		1			1
Pension plan:
Recognized net actuarial loss		1,149			1,087
Related income tax benefit		(416	)		(392	)
Net effect of change in pension plan asset on other comprehensive income		733			695
Total change in other comprehensive income		(16,039	)		4,074
Total Comprehensive Income	$	45,667		$	42,883

Components of Accumulated Other Comprehensive Income

The components of accumulated other comprehensive income for the three months ended March 31, 2018 are as follows:

Changes in Accumulated Other Comprehensive Income (AOCI) by Component ^(a)

For the Three Months Ended March 31, 2018

	Unrealized Gains/Losses on AFS Securities			Accretion on the  unrealized loss for securities transferred from AFS to the HTM			Defined Benefit Pension Items			Total
Balance at January 1, 2018	($	6,204	)	($	46	)	($	35,775	)	($	42,025	)
Cumulative effect of adopting Accounting Standard Update 2016-01		(136	)								(136	)
Reclass due to adopting Accounting Standard Update 2018-02		(1,632	)					(4,721	)		(6,353	)
Other comprehensive income before reclassification		(16,887	)		1			0			(16,886	)
Amounts reclassified from accumulated other comprehensive income		114			0			733			847
Net current-period other comprehensive income, net of tax		(16,773	)		1			733			(16,039	)
Balance at March 31, 2018	($	24,745	)	($	45	)	($	39,763	)	($	64,553	)

(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, 2018

Details about AOCI Components	Amount Reclassified from AOCI			Affected Line Item in the Statement Where Net Income is Presented
Available for sale (“AFS”) securities:
Reclassification of previous noncredit OTTI to credit OTTI	$	0		Net investment securities (losses) gains
Net reclassification adjustment for losses (gains) included in net income		149		Net investment securities (losses) gains
		149		Total before tax
Related income tax effect		(35	)	Tax expense
		114		Net of tax
Pension plan:
Recognized net actuarial loss		1,149	(a)
		1,149		Total before tax
Related income tax effect		(416	)	Tax expense
		733		Net of tax
Total reclassifications for the period	$	847

(a) This AOCI component is included in the computation of net periodic pension cost (see Note 14, Employee Benefit Plans)

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Reconciliation of Numerator and Denominator of Basic Earnings Per Share with that of Diluted Earnings Per Share

The reconciliation of the numerator and denominator of basic earnings per share with that of diluted earnings per share is presented as follows:

	Three Months Ended
	March 31
	2018		2017
Distributed earnings allocated to common stock	$	35,679	$	26,722
Undistributed earnings allocated to common stock		25,919		12,014
Net earnings allocated to common shareholders	$	61,598	$	38,736

	Three Months Ended
	March 31
	2018		2017
Average common shares outstanding		104,859,427		80,902,368
Common stock equivalents		303,431		404,172
Average diluted shares outstanding		105,162,858		81,306,540
Earnings per basic common share	$	0.59	$	0.48
Earnings per diluted common share	$	0.59	$	0.48

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Variable Interest Entities (Tables)

3 Months Ended

Mar. 31, 2018

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 Capital Securities Issued		Interest Rate	Maturity Date
United Statutory Trust III	December 17, 2003	$	20,000	3-month LIBOR + 2.85%	December 17, 2033
United Statutory Trust IV	December 19, 2003	$	25,000	3-month LIBOR + 2.85%	January 23, 2034
United Statutory Trust V	July 12, 2007	$	50,000	3-month LIBOR + 1.55%	October 1, 2037
United Statutory Trust VI	September 20, 2007	$	30,000	3-month LIBOR + 1.30%	December 15, 2037
Premier Statutory Trust II	September 25, 2003	$	6,000	3-month LIBOR + 3.10%	October 8, 2033
Premier Statutory Trust III	May 16, 2005	$	8,000	3-month LIBOR + 1.74%	June 15, 2035
Premier Statutory Trust IV	June 20, 2006	$	14,000	3-month LIBOR + 1.55%	September 23, 2036
Premier Statutory Trust V	December 14, 2006	$	10,000	3-month LIBOR + 1.61%	March 1, 2037
Centra Statutory Trust I	September 20, 2004	$	10,000	3-month LIBOR + 2.29%	September 20, 2034
Centra Statutory Trust II	June 15, 2006	$	10,000	3-month LIBOR + 1.65%	July 7, 2036
Virginia Commerce Trust II	December 19, 2002	$	15,000	6-month LIBOR + 3.30%	December 19, 2032
Virginia Commerce Trust III	December 20, 2005	$	25,000	3-month LIBOR + 1.42%	February 23, 2036
Cardinal Statutory Trust I	July 27, 2004	$	20,000	3-month LIBOR + 2.40%	September 15, 2034
UFBC Capital Trust I	December 30, 2004	$	5,000	3-month LIBOR + 2.10%	March 15, 2035

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, 2018						As of December 31, 2017
	Aggregate Assets		Aggregate Liabilities		Risk Of Loss (1)		Aggregate Assets		Aggregate Liabilities		Risk Of Loss (1)
Trust preferred securities	$	257,527	$	248,700	$	8,827	$	266,669	$	257,674	$	8,995

(1) Represents investment in VIEs.

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2018

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, 2018 and 2017 is as follows:

	At and For the Three Months Ended March 31,  2018
	Community Banking		Mortgage Banking			Other			Consolidated
Net interest income	$	146,261	$	376		$	(2,594	)	$	144,043
Provision for loans losses		5,178		0			0			5,178
Other income		17,131		14,883			(822	)		31,192
Other expense		72,491		18,384			(423	)		90,452
Income taxes		19,276		(703	)		(674	)		17,899
Net income (loss)	$	66,447	$	(2,422	)	$	(2,319	)	$	61,706
Total assets (liabilities)	$	18,319,946	$	289,925		$	9,831		$	18,619,702
Average assets (liabilities)		18,318,613		210,172			15,012			18,543,797

	At and For the Three Months Ended March 31,  2017
	Community Banking		Other			Consolidated
Net interest income	$	109,660	$	(2,040	)	$	107,620
Provision for loans losses		5,899		0			5,899
Other income		16,813		3,333			20,146
Other expense		62,752		90			62,842
Income taxes		19,804		412			20,216
Net income (loss)	$	38,018	$	791		$	38,809
Total assets (liabilities)	$	14,779,983	$	(17,668	)	$	14,762,315
Average assets (liabilities)		14,433,409		(27,676	)		14,405,733

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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Mar. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclass due to adopting Accounting Standard Update		$ 0
ASU 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease in income tax expense	$ 1,048
Accounting Standards Update 2018-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclass due to adopting Accounting Standard Update		$ 6,353

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Mergers and Acquisitions - Additional Information (Detail) - USD ($)			3 Months Ended
	Mar. 31, 2018	Apr. 21, 2017	Mar. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Total assets at consummation	$ 18,619,702,000		$ 18,619,702,000	$ 19,058,959,000
Loans at consummation	12,998,435,000		12,998,435,000	13,027,337,000
Deposits at consummation	13,646,168,000		13,646,168,000	13,830,591,000
Resulting goodwill	1,478,580,000		1,478,580,000	$ 1,478,380,000
Liabilities to provide severance benefits	$ 0		$ 0
Contractually required principal and interest at acquisition		$ 132,837,000
Expected cash flows at acquisition		108,275,000
Estimated fair value of acquired impaired loans at acquisition		$ 86,696,000
Cardinal Financial Corporation [Member]
Business Acquisition [Line Items]
Acquisition completion date			Apr. 21, 2017
Outstanding common stock acquired		100.00%
Total assets at consummation		$ 4,136,008,000
Loans at consummation		3,313,033,000
Deposits at consummation		3,344,740,000
Common stock paid in cash		975,254,000
Common stock value		972,499,000
Stock options exchanged value		$ 2,741,000
Common stock, shares issued		23,690,589
Resulting goodwill		$ 613,486,000
Fractional shares cash paid per share		14,000
Goodwill from acquisition expected to be tax deductible		0
Fair value discounts on loans acquired		144,434,000
Fair value discounts on leases		2,281,000
Fair value adjustment on trust preferred issuances		8,738,000
Premiums on land acquired		4,408,000
Premiums on interest-bearing deposits acquired		5,072,000
Premiums on long-term FHLB advances acquired		10,740,000
Estimated remaining life of discount on leases acquired	5 years 6 months
Estimated remaining life of discount on trust preferred issuances acquired	16 years 5 months 20 days
Estimated remaining life of premium on interest-bearing deposits acquired	4 years 6 months
Estimated remaining life of the FHLB advances acquired	4 years 3 months 22 days
Assumed liabilities to provide severance benefits		1,825,000
Contractually required principal and interest at acquisition		4,211,734,000
Expected cash flows at acquisition		4,155,558,000
Estimated fair value of acquired impaired loans at acquisition		3,168,599,000
Revenue since acquisition included in consolidated results			$ 340,632,000
Revenue since acquisition included in consolidated results			$ 157,852,000
Cardinal Financial Corporation [Member] | Common Stock [Member]
Business Acquisition [Line Items]
Common stock value		$ 972,499,000
Common stock, shares issued		23,690,589
Closing market price per common share		$ 41.05
Cardinal Financial Corporation [Member] | Core Deposit Intangible Assets [Member]
Business Acquisition [Line Items]
Purchase price allocation of Identifiable Intangible assets		$ 28,724,000
Estimated period of amortization of core deposit intangibles		10 years
Fractional shares cash paid per share		$ 14,000
Cardinal Financial Corporation [Member] | George Mason Trade Name Intangible [Member]
Business Acquisition [Line Items]
Purchase price allocation of Identifiable Intangible assets		$ 1,080,000

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Mergers and Acquisitions - Schedule of Acquired Loans Accounted for at Fair Value (Detail) $ in Thousands	Apr. 21, 2017 USD ($)
Business Acquisition [Line Items]
Contractually required principal and interest at acquisition	$ 132,837
Expected cash flows at acquisition	108,275
Basis in acquired loans at acquisition - estimated fair value	86,696
Cardinal Financial Corporation [Member]
Business Acquisition [Line Items]
Contractually required principal and interest at acquisition	4,211,734
Contractual cash flows not expected to be collected	(56,176)
Expected cash flows at acquisition	4,155,558
Interest component of expected cash flows	(986,959)
Basis in acquired loans at acquisition - estimated fair value	$ 3,168,599

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Mergers and Acquisitions - Schedule of Fair Value of Acquired Identifiable Assets and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Apr. 21, 2017	Mar. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Resulting goodwill		$ 1,478,580	$ 1,478,380
Cardinal Financial Corporation [Member]
Business Acquisition [Line Items]
Value of common shares issued	$ 972,499
Fair value of stock options assumed	2,741
Cash for fractional shares	14
Total purchase price	975,254
Cash and cash equivalents	44,545
Investment securities	395,829
Loans held for sale	271,301
Loans	3,168,599
Premises and equipment	24,208
Other assets	135,383
Total identifiable assets	4,069,669
Deposits	3,349,812
Short-term borrowings	96,215
Long-term borrowings	220,119
Unfavorable lease liability	2,281
Other liabilities	39,474
Total identifiable liabilities	3,707,901
Preliminary fair value of net assets acquired including identifiable intangible assets	361,768
Resulting goodwill	613,486
Cardinal Financial Corporation [Member] | Core Deposit Intangible Assets [Member]
Business Acquisition [Line Items]
Cash for fractional shares	14
Intangible assets	28,724
Cardinal Financial Corporation [Member] | George Mason Trade Name Intangible [Member]
Business Acquisition [Line Items]
Intangible assets	$ 1,080

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Mergers and Acquisitions - Schedule of Fair Value of Acquired Identifiable Assets and Liabilities Assumed (Parenthetical) (Detail)	Apr. 21, 2017 shares
Cardinal Financial Corporation [Member]
Business Acquisition [Line Items]
Common stock, shares issued	23,690,589

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Mergers and Acquisitions - Schedule of Business Acquisition Pro Forma Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Business Combinations [Abstract]
Total Revenues	$ 191,052
Net Income	$ 54,710

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Investment Securities - Summary of Amortized Cost and Estimated Fair Values of Available for Sale Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Investments [Line Items]
Amortized Cost	$ 2,119,071	$ 1,900,684
Gross Unrealized Gains	4,261	8,924
Gross Unrealized Losses	38,221	20,852
Estimated Fair Value	2,085,111	1,888,756
Cumulative OTTI in AOCI	2,672	20,856
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	163,718	114,735
Gross Unrealized Gains	237	385
Gross Unrealized Losses	849	362
Estimated Fair Value	163,106	114,758
Cumulative OTTI in AOCI	0	0
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Amortized Cost	297,481	303,101
Gross Unrealized Gains	1,300	3,197
Gross Unrealized Losses	5,069	2,429
Estimated Fair Value	293,712	303,869
Cumulative OTTI in AOCI	0	0
Residential Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Amortized Cost	934,557	821,857
Gross Unrealized Gains	993	2,096
Gross Unrealized Losses	20,003	9,360
Estimated Fair Value	915,547	814,593
Cumulative OTTI in AOCI	0	0
Residential Mortgage-Backed Securities, Non-agency [Member]
Schedule of Investments [Line Items]
Amortized Cost	4,665	4,969
Gross Unrealized Gains	501	543
Gross Unrealized Losses	0	0
Estimated Fair Value	5,166	5,512
Cumulative OTTI in AOCI	86	86
Commercial Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Amortized Cost	485,851	457,107
Gross Unrealized Gains	281	1,059
Gross Unrealized Losses	9,353	3,309
Estimated Fair Value	476,779	454,857
Cumulative OTTI in AOCI	0	0
Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	146,774	109,829
Gross Unrealized Gains	285	148
Gross Unrealized Losses	475	7
Estimated Fair Value	146,584	109,970
Cumulative OTTI in AOCI	0	0
Trust Preferred Collateralized Debt Obligations [Member]
Schedule of Investments [Line Items]
Amortized Cost	9,192	37,856
Gross Unrealized Gains	0	542
Gross Unrealized Losses	1,128	4,129
Estimated Fair Value	8,064	34,269
Cumulative OTTI in AOCI	2,586	20,770
Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	13,433	13,417
Gross Unrealized Gains	327	368
Gross Unrealized Losses	614	1,225
Estimated Fair Value	13,146	12,560
Cumulative OTTI in AOCI	0	0
Corporate Bonds [Member]
Schedule of Investments [Line Items]
Amortized Cost	63,400	28,101
Gross Unrealized Gains	337	407
Gross Unrealized Losses	730	18
Estimated Fair Value	63,007	28,490
Cumulative OTTI in AOCI	$ 0	0
Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost		9,712
Gross Unrealized Gains		179
Gross Unrealized Losses		13
Estimated Fair Value		9,878
Cumulative OTTI in AOCI		$ 0

XML

Investment Securities - Summary of Securities Available for Sale in an Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	$ 1,374,776	$ 897,752
Less than 12 months, Unrealized Losses	24,600	7,828
12 months or longer, Fair Value	321,221	369,074
12 months or longer, Unrealized Losses	13,621	13,024
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	65,919	36,678
Less than 12 months, Unrealized Losses	722	230
12 months or longer, Fair Value	22,751	22,920
12 months or longer, Unrealized Losses	127	132
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	137,221	82,896
Less than 12 months, Unrealized Losses	1,584	566
12 months or longer, Fair Value	55,674	59,432
12 months or longer, Unrealized Losses	3,485	1,863
Residential Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	682,082	460,414
Less than 12 months, Unrealized Losses	13,128	4,621
12 months or longer, Fair Value	172,052	182,482
12 months or longer, Unrealized Losses	6,875	4,739
Residential Mortgage-Backed Securities, Non-agency [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	0	0
Less than 12 months, Unrealized Losses	0	0
12 months or longer, Fair Value	0	0
12 months or longer, Unrealized Losses	0	0
Commercial Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	391,087	282,858
Less than 12 months, Unrealized Losses	7,961	2,386
12 months or longer, Fair Value	60,595	70,763
12 months or longer, Unrealized Losses	1,392	923
Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	56,833	27,931
Less than 12 months, Unrealized Losses	475	7
12 months or longer, Fair Value	0	0
12 months or longer, Unrealized Losses	0	0
Trust Preferred Collateralized Debt Obligations [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	5,049	28,629
12 months or longer, Unrealized Losses	1,128	4,129
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	5,100	4,485
12 months or longer, Unrealized Losses	614	1,225
Corporate Bonds [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	41,634	6,975
Less than 12 months, Unrealized Losses	730	18
12 months or longer, Fair Value	0	0
12 months or longer, Unrealized Losses	$ 0	0
Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value		0
Less than 12 months, Unrealized Losses		0
12 months or longer, Fair Value		363
12 months or longer, Unrealized Losses		$ 13

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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, 2018	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales and calls	$ 99,703	$ 98,798
Gross realized gains	1,163	214
Gross realized losses	$ 1,312	$ 0

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Investment Securities - Additional Information (Detail)		3 Months Ended
	Apr. 03, 2018 USD ($) Security	Mar. 31, 2018 USD ($) Security Securities	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities		$ 38,221,000		$ 20,852,000
Available for sale securities in unrealized loss position | Securities		635
Available for sale securities in portfolio, number | Securities		870
Amortized cost of available for sale securities		$ 2,119,071,000		1,900,684,000
Capitalization of banks, equal to or greater than, in the single-issue trust preferred portfolio		10,000,000,000
Securities sold, total		2,085,111,000		1,888,756,000
Gross realized gains		0	$ 0
Gross realized losses		0	$ 0
Cost of equity securities		11,160,000		0
Carrying value of securities pledged		1,612,649,000		1,403,565,000
SunTrust Bank [Member]
Schedule of Investments [Line Items]
Amortized cost of trust preferred securities		7,428,000
Royal Bank of Scotland [Member]
Schedule of Investments [Line Items]
Amortized cost of trust preferred securities		976,000
Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale single issue trust preferred securities		7,719,000
Below Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale single issue trust preferred securities		5,714,000
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities		5,069,000		2,429,000
Amortized cost of available for sale securities		$ 297,481,000		303,101,000
Percent of portfolio with credit support		77.00%
Investment grade credit rate percentage		1.00%
Number of equity securities other-than-temporarily impaired | Securities		0
Securities sold, total		$ 293,712,000		303,869,000
Agency Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale securities		1,420,408,000
Commercial Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities		9,353,000		3,309,000
Amortized cost of available for sale securities		485,851,000		457,107,000
Securities sold, total		476,779,000		454,857,000
Residential Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities		20,003,000		9,360,000
Amortized cost of available for sale securities		934,557,000		821,857,000
Securities sold, total		915,547,000		814,593,000
Residential Mortgage-Backed Securities, Non-agency [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities		0		0
Amortized cost of available for sale securities		4,665,000		4,969,000
Securities sold, total		5,166,000		5,512,000
Residential Mortgage-Backed Securities, Non-agency [Member] | Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale securities		473,000
Residential Mortgage-Backed Securities, Non-agency [Member] | Below Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale securities		4,192,000
Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities				13,000
Amortized cost of available for sale securities				9,712,000
Securities sold, total				9,878,000
Total other-than-temporarily impairment		300,000
Trust Preferred Collateralized Debt Obligations [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities		1,128,000		4,129,000
Amortized cost of available for sale securities		9,192,000		37,856,000
Securities sold, total		8,064,000		34,269,000
Trust Preferred Collateralized Debt Obligations [Member] | TRUP CDOs [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale securities		9,192,000
Reduction in amortized cost		$ 28,664,000
Number of securities sold | Security		7
Securities sold, total		$ 25,315,000
Number of securities redeemed | Security		1
Securities redeemed value		$ 3,300,000
Trust Preferred Collateralized Debt Obligations [Member] | TRUP CDOs [Member] | Subsequent Event [Member]
Schedule of Investments [Line Items]
Number of securities redeemed | Security	1
Securities redeemed value	$ 3,016,000
Corporate Bonds [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities		730,000		18,000
Amortized cost of available for sale securities		$ 63,400,000		28,101,000
Number of equity securities other-than-temporarily impaired		0
Securities sold, total		$ 63,007,000		$ 28,490,000
Corporate Bonds [Member] | Debt Issuances of Corporations [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale securities		$ 63,400,000
Corporate Bonds [Member] | Investment Grade [Member]
Schedule of Investments [Line Items]
Percent of corporate securities portfolio		67.00%
Corporate Bonds [Member] | Below Investment Grade [Member]
Schedule of Investments [Line Items]
Percent of corporate securities portfolio		33.00%

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Investment Securities - Roll Forward of Credit Losses on Securities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Cumulative credit losses, Beginning Balance	$ 18,060	$ 22,162
Additional credit losses on securities for which OTTI was previously recognized	0	0
Reductions for securities sold or paid off during the period	(14,861)	0
Cumulative credit losses, Ending Balance	$ 3,199	$ 22,162

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Investment Securities - Summary of Maturities of Securities Available for Sale by Amortized Cost and Estimated Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 52,863	$ 50,311
Due after one year through five years, Amortized Cost	476,361	386,039
Due after five years through ten years, Amortized Cost	445,861	400,129
Due after ten years, Amortized Cost	1,143,986	1,054,493
Marketable equity securities, Amortized Cost	0	9,712
Amortized Cost	2,119,071	1,900,684
Due in one year or less, Estimated Fair Value	52,753	50,212
Due after one year through five years, Estimated Fair Value	471,410	384,585
Due after five years through ten years, Estimated Fair Value	436,757	398,208
Due after ten years, Estimated Fair Value	1,124,191	1,045,873
Marketable equity securities, Estimated Fair Value	0	9,878
Total available for sale securities	$ 2,085,111	$ 1,888,756

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Investment Securities - Summary of Amortized Cost and Estimated Fair Values of Securities Held to Maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Investments [Line Items]
Amortized Cost	$ 20,405	$ 20,428
Gross Unrealized Gains	253	321
Gross Unrealized Losses	652	731
Estimated Fair Value	20,006	20,018
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	5,160	5,187
Gross Unrealized Gains	241	308
Gross Unrealized Losses	0	0
Estimated Fair Value	5,401	5,495
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Amortized Cost	5,797	5,797
Gross Unrealized Gains	9	10
Gross Unrealized Losses	0	0
Estimated Fair Value	5,806	5,807
Residential Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Amortized Cost	23	23
Gross Unrealized Gains	3	3
Gross Unrealized Losses	0	0
Estimated Fair Value	26	26
Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	9,405	9,401
Gross Unrealized Gains	0	0
Gross Unrealized Losses	652	731
Estimated Fair Value	8,753	8,670
Corporate Bonds [Member]
Schedule of Investments [Line Items]
Amortized Cost	20	20
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	$ 20	$ 20

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Investment Securities - Summary of Maturities of Debt Securities Held to Maturity by Amortized Cost and Estimated Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 0	$ 0
Due after one year through five years, Amortized Cost	9,318	9,344
Due after five years through ten years, Amortized Cost	8,091	5,663
Due after ten years, Amortized Cost	2,996	5,421
Amortized Cost	20,405	20,428
Due in one year or less, Estimated Fair Value	0	0
Due after one year through five years, Estimated Fair Value	9,566	9,660
Due after five years through ten year, Estimated Fair Value	7,618	5,343
Due after ten years, Estimated Fair Value	2,822	5,015
Estimated Fair Value, Total	$ 20,006	$ 20,018

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Investment Securities - Summary of Equity Securities (Detail) - Marketable Equity Securities [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Net gains (losses) recognized during the period	$ (36)
Net gains (losses) recognized during the period on equity securities sold	2
Unrealized gains recognized during the period on equity securities still held at period end	39
Unrealized losses recognized during the period on equity securities still held at period end	$ 77

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Loans - Major Classes of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Commercial, financial, and agricultural
Total commercial, financial & agricultural	$ 7,746,078	$ 7,811,906
Residential real estate	3,065,990	2,996,171
Construction & land development	1,433,125	1,504,907
Consumer:
Bankcard	9,372	10,314
Other consumer	743,870	704,039
Total Financing Receivables	12,998,435	13,027,337
Owner-Occupied [Member]
Commercial, financial, and agricultural
Total commercial, financial & agricultural	1,366,980	1,361,629
Nonowner-Occupied [Member]
Commercial, financial, and agricultural
Total commercial, financial & agricultural	4,426,776	4,451,298
Other Commercial [Member]
Commercial, financial, and agricultural
Total commercial, financial & agricultural	$ 1,952,322	$ 1,998,979

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Loans - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Loans held for sale	$ 193,915	$ 265,955
Acquired impaired loans from merger	$ 12,998,435	$ 13,027,337
Percentage of acquired impaired loans from merger on total gross loans	1.46%	1.62%
Recorded investment in acquired impaired loans	$ 253,827	$ 285,964
Directors and Officers [Member]
Related party loans	35,777	36,360
Loans Acquired with Deteriorated Credit Quality [Member]
Acquired impaired loans from merger	$ 189,675	$ 210,521

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Loans - Activity for Accretable Yield (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretable yield at the beginning of the period	$ 39,098
Accretion (including cash recoveries)	(4,053)
Additions	0
Net reclassifications to accretable from non-accretable	4,493
Disposals (including maturities, foreclosures, and charge-offs)	(1,948)
Accretable yield at the end of the period	$ 37,590

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Credit Quality - Additional Information (Detail) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018 USD ($) SecurityLoan	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)
Minimum days for discontinue of accrual interest on commercial and consumer loan	90 days
Maximum days for discontinue of accrual interest on commercial and consumer loan	120 days
Troubled debt restructuring	$ 48,271		$ 50,129
Restructured loans on nonaccrual status	33,592		30,868
Restructured loans modified by reduction in interest	1,760
Restructured loan and interest	1,891
Restructured loans modified by change in terms	$ 44,620
Number of loans restructured | SecurityLoan	0
Restructured loans modified by reduction in interest rate and change in terms		$ 4,191
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
Real estate acquired in foreclosure or other settlement of loans	$ 22,778		24,348
Recorded investment of consumer mortgage loans	377		873
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Restructured loans on nonaccrual status			95
Financing Receivables 30 To 89 Days Past Due [Member]
Restructured loans on nonaccrual status	$ 85		$ 1,254

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Credit Quality - Schedule of Troubled Debt Restructurings, Segregated by Class of Loans (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	5
Pre-Modification Outstanding Recorded Investment	$ 4,208
Post-Modification Outstanding Recorded Investment	$ 4,191
Construction & Land Development [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1
Pre-Modification Outstanding Recorded Investment	$ 1,456
Post-Modification Outstanding Recorded Investment	$ 1,450
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	$ 0
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	$ 0
Other Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	4
Pre-Modification Outstanding Recorded Investment	$ 2,752
Post-Modification Outstanding Recorded Investment	$ 2,741
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	$ 0
Consumer [Member] | Bankcard [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	$ 0
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	$ 0

XML

Credit Quality - Schedule of Age Analysis of its Past Due Loans, Segregated by Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	$ 95,904	$ 76,551
Loans, Total Past Due	238,833	226,119
Loans, Current & Other	12,759,602	12,801,218
Total Financing Receivables	12,998,435	13,027,337
Loans, Recorded Investment >90 Days & Accruing	9,165	9,897
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, Total Past Due	142,929	149,568
Construction & Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	3,138	1,615
Loans, Total Past Due	21,541	18,805
Loans, Current & Other	1,411,584	1,486,102
Total Financing Receivables	1,433,125	1,504,907
Loans, Recorded Investment >90 Days & Accruing	152	385
Construction & Land Development [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, Total Past Due	18,403	17,190
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	13,303	7,968
Loans, Total Past Due	32,165	21,631
Loans, Current & Other	1,334,815	1,339,998
Total Financing Receivables	1,366,980	1,361,629
Loans, Recorded Investment >90 Days & Accruing	847	458
Commercial Real Estate [Member] | Owner-Occupied [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, Total Past Due	18,862	13,663
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	7,248	10,398
Loans, Total Past Due	26,542	30,846
Loans, Current & Other	4,400,234	4,420,452
Total Financing Receivables	4,426,776	4,451,298
Loans, Recorded Investment >90 Days & Accruing	139	634
Commercial Real Estate [Member] | Nonowner-Occupied [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, Total Past Due	19,294	20,448
Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	35,269	11,533
Loans, Total Past Due	94,681	80,009
Loans, Current & Other	1,857,641	1,918,970
Total Financing Receivables	1,952,322	1,998,979
Loans, Recorded Investment >90 Days & Accruing	962	940
Other Commercial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, Total Past Due	59,412	68,476
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	30,344	35,300
Loans, Total Past Due	55,985	63,937
Loans, Current & Other	3,010,005	2,932,234
Total Financing Receivables	3,065,990	2,996,171
Loans, Recorded Investment >90 Days & Accruing	6,027	6,519
Residential Real Estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, Total Past Due	25,641	28,637
Consumer [Member] | Bankcard [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	185	449
Loans, Total Past Due	306	635
Loans, Current & Other	9,066	9,679
Total Financing Receivables	9,372	10,314
Loans, Recorded Investment >90 Days & Accruing	121	186
Consumer [Member] | Bankcard [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, Total Past Due	121	186
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	6,417	9,288
Loans, Total Past Due	7,613	10,256
Loans, Current & Other	736,257	693,783
Total Financing Receivables	743,870	704,039
Loans, Recorded Investment >90 Days & Accruing	917	775
Consumer [Member] | Other Consumer [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, Total Past Due	$ 1,196	$ 968

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Credit Quality - Schedule of Age Analysis of its Past Due Loans, Segregated by Class of Loans (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Acquired impaired loans from merger	$ 12,998,435	$ 13,027,337
Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Acquired impaired loans from merger	$ 189,675	$ 210,521

XML

Credit Quality - Schedule of Nonaccrual Loans, Segregated by Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	$ 133,764	$ 139,671
Construction & Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	18,251	16,805
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	18,015	13,205
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	19,155	19,814
Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	58,450	67,536
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	19,614	22,118
Consumer [Member] | Bankcard [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	0	0
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	$ 279	$ 193

XML

Credit Quality - Schedule of Credit Quality Indicators Information, by Class of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	$ 12,998,435	$ 13,027,337
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	3,065,990	2,996,171
Other Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,952,322	1,998,979
Bankcard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	9,372	10,314
Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	743,870	704,039
Owner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,366,980	1,361,629
Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	4,426,776	4,451,298
Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,433,125	1,504,907
Pass [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	3,011,824	2,945,266
Pass [Member] | Other Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,820,513	1,848,868
Pass [Member] | Bankcard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	9,066	9,679
Pass [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	736,184	693,727
Pass [Member] | Owner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,291,287	1,276,088
Pass [Member] | Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	4,250,743	4,312,985
Pass [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,349,638	1,413,706
Special Mention [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	20,738	18,025
Special Mention [Member] | Other Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	51,165	55,564
Special Mention [Member] | Bankcard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	185	449
Special Mention [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	6,460	9,334
Special Mention [Member] | Owner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	14,448	20,165
Special Mention [Member] | Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	72,997	57,618
Special Mention [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	3,779	5,196
Substandard [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	33,428	32,880
Substandard [Member] | Other Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	77,848	90,625
Substandard [Member] | Bankcard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	121	186
Substandard [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,226	978
Substandard [Member] | Owner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	61,245	65,376
Substandard [Member] | Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	103,036	80,695
Substandard [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	79,708	86,005
Doubtful [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	0	0
Doubtful [Member] | Other Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	2,796	3,922
Doubtful [Member] | Bankcard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	0	0
Doubtful [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	0	0
Doubtful [Member] | Owner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	0	0
Doubtful [Member] | Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	0	0
Doubtful [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	$ 0	$ 0

XML

Credit Quality - Schedule of Impaired Loans Information by Class of Loans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Construction & Land Development [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	$ 48,320		$ 52,279
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	53,084		59,691
Impaired Loans, Recorded Investment, With an allowance recorded	2,015		1,383
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	4,664		1,383
Impaired Loans, Related Allowance	217		229
Impaired Loans, Recorded Investment	50,335		53,662
Impaired Loans, Unpaid Principal Balance	57,748		61,074
Impaired Loans, Related Allowance	217		229
Impaired Loans, Average Recorded Investment, With no related allowance recorded	50,300	$ 35,949
Impaired Loans, Interest Income Recognized, With no related allowance recorded	103	76
Impaired Loans, Average Recorded Investment, With an allowance recorded	1,699	4,161
Impaired Loans, Interest Income Recognized, With an allowance recorded	20	21
Impaired Loans, Average Recorded Investment	51,999	40,110
Impaired Loans, Interest Income Recognized	123	97
Bankcard [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Average Recorded Investment, With no related allowance recorded	0	0
Impaired Loans, Interest Income Recognized, With no related allowance recorded	0	0
Other Consumer [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Average Recorded Investment, With no related allowance recorded	28	36
Impaired Loans, Interest Income Recognized, With no related allowance recorded	0	0
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	75,776		78,117
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	75,941		78,419
Impaired Loans, Recorded Investment, With an allowance recorded	5,873		9,132
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	5,873		9,132
Impaired Loans, Related Allowance	1,075		2,251
Impaired Loans, Recorded Investment	81,649		87,249
Impaired Loans, Unpaid Principal Balance	81,814		87,551
Impaired Loans, Related Allowance	1,075		2,251
Impaired Loans, Average Recorded Investment, With no related allowance recorded	76,947	55,857
Impaired Loans, Interest Income Recognized, With no related allowance recorded	377	421
Impaired Loans, Average Recorded Investment, With an allowance recorded	7,502	7,663
Impaired Loans, Interest Income Recognized, With an allowance recorded	25	137
Impaired Loans, Average Recorded Investment	84,449	63,520
Impaired Loans, Interest Income Recognized	402	558
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	117,589		134,136
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	117,648		134,195
Impaired Loans, Recorded Investment, With an allowance recorded	8,543		7,797
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	8,543		7,797
Impaired Loans, Related Allowance	1,471		1,592
Impaired Loans, Recorded Investment	126,132		141,933
Impaired Loans, Unpaid Principal Balance	126,191		141,992
Impaired Loans, Related Allowance	1,471		1,592
Impaired Loans, Average Recorded Investment, With no related allowance recorded	125,863	82,528
Impaired Loans, Interest Income Recognized, With no related allowance recorded	120	117
Impaired Loans, Average Recorded Investment, With an allowance recorded	8,170	16,096
Impaired Loans, Interest Income Recognized, With an allowance recorded	59	83
Impaired Loans, Average Recorded Investment	134,033	98,624
Impaired Loans, Interest Income Recognized	179	200
Other Commercial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	52,394		46,993
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	54,953		49,552
Impaired Loans, Recorded Investment, With an allowance recorded	48,082		60,512
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	55,905		70,396
Impaired Loans, Related Allowance	16,180		16,721
Impaired Loans, Recorded Investment	100,476		107,505
Impaired Loans, Unpaid Principal Balance	110,858		119,948
Impaired Loans, Related Allowance	16,180		16,721
Impaired Loans, Average Recorded Investment, With no related allowance recorded	49,693	49,286
Impaired Loans, Interest Income Recognized, With no related allowance recorded	206	220
Impaired Loans, Average Recorded Investment, With an allowance recorded	54,297	58,824
Impaired Loans, Interest Income Recognized, With an allowance recorded	19	370
Impaired Loans, Average Recorded Investment	103,990	108,110
Impaired Loans, Interest Income Recognized	225	590
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	24,125		26,751
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	24,787		28,202
Impaired Loans, Recorded Investment, With an allowance recorded	11,887		9,813
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	13,438		10,418
Impaired Loans, Related Allowance	1,742		1,552
Impaired Loans, Recorded Investment	36,012		36,564
Impaired Loans, Unpaid Principal Balance	38,225		38,620
Impaired Loans, Related Allowance	1,742		1,552
Impaired Loans, Average Recorded Investment, With no related allowance recorded	25,437	21,814
Impaired Loans, Interest Income Recognized, With no related allowance recorded	83	41
Impaired Loans, Average Recorded Investment, With an allowance recorded	10,850	13,113
Impaired Loans, Interest Income Recognized, With an allowance recorded	0	8
Impaired Loans, Average Recorded Investment	36,287	34,927
Impaired Loans, Interest Income Recognized	83	49
Consumer [Member] | Bankcard [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	0		0
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	0		0
Impaired Loans, Recorded Investment, With an allowance recorded	0		0
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	0		0
Impaired Loans, Related Allowance	0		0
Impaired Loans, Recorded Investment	0		0
Impaired Loans, Unpaid Principal Balance	0		0
Impaired Loans, Related Allowance	0		0
Impaired Loans, Average Recorded Investment, With an allowance recorded	0	0
Impaired Loans, Interest Income Recognized, With an allowance recorded	0	0
Impaired Loans, Average Recorded Investment	0	0
Impaired Loans, Interest Income Recognized	0	0
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	42		15
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	42		15
Impaired Loans, Recorded Investment, With an allowance recorded	0		0
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	0		0
Impaired Loans, Related Allowance	0		0
Impaired Loans, Recorded Investment	42		15
Impaired Loans, Unpaid Principal Balance	42		15
Impaired Loans, Related Allowance	0		$ 0
Impaired Loans, Average Recorded Investment, With an allowance recorded	0	0
Impaired Loans, Interest Income Recognized, With an allowance recorded	0	0
Impaired Loans, Average Recorded Investment	28	36
Impaired Loans, Interest Income Recognized	$ 0	$ 0

XML

Allowance for Credit Losses - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Specific loss allocations are calculated for commercial loans in excess			$ 500,000
Number of days for collecting principal or interest on consumer loans			30 days
Minimum collection period for home equity loan or high loan to value loan			180 days
Retail credits amount deemed unrecoverable charged-off period			60 days
Retail credits charged off period after discovery of the fraud			90 days
Reversal of provision for loan losses related to loans acquired	$ 1,279	$ 367
Reserve for lending-related commitments	$ 755	$ 679	$ 679
Closed-End Retail Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of days delinquent from contractual due date			12 days
Open-End Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of days delinquent from contractual due date			180 days

XML

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, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	$ 76,627	$ 72,771
Charge-offs	5,858	32,863
Recoveries	706	8,313
Provision	5,178	28,406
Allowance for Loan Losses Ending balance	76,653	76,627
Allowance for Loan Losses, individually evaluated for impairment	20,685	22,345
Allowance for Loan Losses, collectively evaluated for impairment	55,968	54,282
Financing receivables	12,998,435	13,027,337
Financing receivables, individually evaluated for impairment	158,549	168,524
Financing receivables, collectively evaluated for impairment	12,650,211	12,648,292
Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses	0	0
Financing receivables	189,675	210,521
Construction & Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	7,187	10,606
Charge-offs	460	3,337
Recoveries	2	726
Provision	(300)	(808)
Allowance for Loan Losses Ending balance	6,429	7,187
Allowance for Loan Losses, individually evaluated for impairment	217	229
Allowance for Loan Losses, collectively evaluated for impairment	6,212	6,958
Financing receivables	1,433,125	1,504,907
Financing receivables, individually evaluated for impairment	16,909	16,921
Financing receivables, collectively evaluated for impairment	1,391,948	1,461,206
Construction & Land Development [Member] | Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses	0	0
Financing receivables	24,268	26,780
Allowance for Estimated Imprecision [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	73	347
Charge-offs	0	0
Recoveries	0	0
Provision	97	(274)
Allowance for Loan Losses Ending balance	170	73
Allowance for Loan Losses, individually evaluated for impairment	0	0
Allowance for Loan Losses, collectively evaluated for impairment	170	73
Financing receivables	0	0
Financing receivables, individually evaluated for impairment	0	0
Financing receivables, collectively evaluated for impairment	0	0
Allowance for Estimated Imprecision [Member] | Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses	0	0
Financing receivables	0	0
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	5,401	5,273
Charge-offs	1,015	2,246
Recoveries	55	2,599
Provision	(722)	(225)
Allowance for Loan Losses Ending balance	3,719	5,401
Allowance for Loan Losses, individually evaluated for impairment	1,075	2,251
Allowance for Loan Losses, collectively evaluated for impairment	2,644	3,150
Financing receivables	1,366,980	1,361,629
Financing receivables, individually evaluated for impairment	33,438	36,721
Financing receivables, collectively evaluated for impairment	1,301,725	1,291,379
Commercial Real Estate [Member] | Owner-Occupied [Member] | Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses	0	0
Financing receivables	31,817	33,529
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	6,369	6,883
Charge-offs	0	296
Recoveries	136	244
Provision	269	(462)
Allowance for Loan Losses Ending balance	6,774	6,369
Allowance for Loan Losses, individually evaluated for impairment	1,471	1,592
Allowance for Loan Losses, collectively evaluated for impairment	5,303	4,777
Financing receivables	4,426,776	4,451,298
Financing receivables, individually evaluated for impairment	22,868	21,851
Financing receivables, collectively evaluated for impairment	4,310,587	4,320,997
Commercial Real Estate [Member] | Nonowner-Occupied [Member] | Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses	0	0
Financing receivables	93,321	108,450
Other Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	45,189	33,087
Charge-offs	2,868	21,189
Recoveries	106	3,395
Provision	4,490	29,896
Allowance for Loan Losses Ending balance	46,917	45,189
Allowance for Loan Losses, individually evaluated for impairment	16,180	16,721
Allowance for Loan Losses, collectively evaluated for impairment	30,737	28,468
Financing receivables	1,952,322	1,998,979
Financing receivables, individually evaluated for impairment	71,478	78,715
Financing receivables, collectively evaluated for impairment	1,853,603	1,892,706
Other Commercial [Member] | Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses	0	0
Financing receivables	27,241	27,558
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	9,927	13,770
Charge-offs	910	2,973
Recoveries	264	601
Provision	972	(1,471)
Allowance for Loan Losses Ending balance	10,253	9,927
Allowance for Loan Losses, individually evaluated for impairment	1,742	1,552
Allowance for Loan Losses, collectively evaluated for impairment	8,511	8,375
Financing receivables	3,065,990	2,996,171
Financing receivables, individually evaluated for impairment	13,856	14,316
Financing receivables, collectively evaluated for impairment	3,039,123	2,967,666
Residential Real Estate [Member] | Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses	0	0
Financing receivables	13,011	14,189
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	2,481	2,805
Charge-offs	605	2,822
Recoveries	143	748
Provision	372	1,750
Allowance for Loan Losses Ending balance	2,391	2,481
Allowance for Loan Losses, individually evaluated for impairment	0	0
Allowance for Loan Losses, collectively evaluated for impairment	2,391	2,481
Financing receivables	753,242	714,353
Financing receivables, individually evaluated for impairment	0	0
Financing receivables, collectively evaluated for impairment	753,225	714,338
Consumer [Member] | Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses	0	0
Financing receivables	$ 17	$ 15

XML

Intangible Assets- Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Goodwill not subject to amortization	$ 1,478,580	$ 1,478,380
Core Deposit Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	98,359	98,359
Accumulated Amortization	(56,463)	(54,453)
George Mason Trade Name Intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,080	1,080
Community Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill not subject to amortization	1,473,265	1,473,265
Community Banking [Member] | Core Deposit Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	98,359	98,359
Accumulated Amortization	(56,463)	(54,453)
Community Banking [Member] | George Mason Trade Name Intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	0	0
Mortgage Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill not subject to amortization	5,315	5,115
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

XML

Intangible Assets - Reconciliation of Goodwill (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 1,478,380
Goodwill, Ending Balance	1,478,580
Cardinal Financial Corporation [Member]
Goodwill [Line Items]
Addition to goodwill	200
Community Banking [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	1,473,265
Goodwill, Ending Balance	1,473,265
Community Banking [Member] | Cardinal Financial Corporation [Member]
Goodwill [Line Items]
Addition to goodwill	0
Mortgage Banking [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	5,115
Goodwill, Ending Balance	5,315
Mortgage Banking [Member] | Cardinal Financial Corporation [Member]
Goodwill [Line Items]
Addition to goodwill	$ 200

XML

Intangible Assets - Schedule of Anticipated Amortization Expense (Detail) $ in Thousands	Mar. 31, 2018 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2018	$ 8,039
2019	7,016
2020	6,309
2021	5,369
2022 and thereafter	$ 17,173

XML

Short-Term Borrowings - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Unused lines of credit	$ 230,000,000
Federal funds purchased	17,615,000	$ 16,235,000
Repurchase agreements	250,771,000
Wholesale REPO	$ 50,000,000
Maturity date of wholesale REPO	2018-05
Unrelated Financial Institution [Member]
Short-term Debt [Line Items]
Unused lines of credit	$ 20,000,000
Renewal period of line of credit	360 days
Amount of outstanding balance under line of credit	$ 0

XML

Long-Term Borrowings - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Mar. 31, 2018 USD ($) Trust	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Unused borrowing amount	$ 4,213,640,000
FHLB advances	$ 1,060,948,000	$ 1,271,531,000
FHLB advances, weighted-average interest rate	1.84%
FHLB advances, maximum maturity period	7 years
Number of statutory business trusts | Trust	14
Outstanding balances of debentures	$ 233,961,000	$ 242,446,000
Maximum time to defer payment of interest on subordinate debt		5 years
Maximum [Member]
Debt Instrument [Line Items]
Risk based assets	$ 15,000,000,000
Capital Securities [Member]
Debt Instrument [Line Items]
Number of statutory business trusts | Trust	14

XML

Long -Term Borrowings - Schedule of Maturities of Long-term Borrowings (Detail) $ in Thousands	Mar. 31, 2018 USD ($)
Debt Disclosure [Abstract]
2018	$ 746,863
2019	187,516
2020	42,013
2021	52,693
2022 and thereafter	31,863
Total	$ 1,060,948

XML

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Loss Contingencies [Line Items]
Loan commitments outstanding	$ 4,001,212,000	$ 4,224,719,000
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	$ 516,000
Commitments to Extend Credit [Member] | George Mason [Member] | Short-term Contract with Customer [Member]
Loss Contingencies [Line Items]
Additional commitments to extend credit	400,836,000
Commercial Letters of Credit [Member]
Loss Contingencies [Line Items]
Letters of credit issued	0	0
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Letters of credit issued	$ 142,532,000	$ 147,017,000

XML

Derivative Financial Instruments - Schedule of Notional Amount and Fair Value Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Asset derivatives, notional amount	$ 299,721	$ 251,721
Asset derivatives designated as hedging instruments	2,514	538
Liability derivatives, notional amount	258,000	255,295
Asset derivatives not designated as hedging instruments	5,683	4,561
Total asset derivatives	8,197	5,099
Liability derivatives designated as hedging instruments	0	165
Liability derivatives not designated as hedging instruments	762	312
Total liability derivatives	762	477
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	88,679	71,831
Liability derivatives, notional amount	0	18,795
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	211,042	179,890
Liability derivatives, notional amount	258,000	236,500
Other Assets [Member] | Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Asset derivatives not designated as hedging instruments	5,610	4,559
Other Assets [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Asset derivatives, notional amount	195,330	148,866
Other Liabilities [Member] | TBA Mortgage Backed Securities [Member]
Derivative [Line Items]
Liability derivatives not designated as hedging instruments	762	312
Other Liabilities [Member] | Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Liability derivatives not designated as hedging instruments	0	0
Other Liabilities [Member] | Not Designated as Hedging Instrument [Member] | TBA Mortgage Backed Securities [Member]
Derivative [Line Items]
Liability derivatives, notional amount	258,000	236,500
Other Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Liability derivatives, notional amount	0	0
Interest Rate Swap Contracts [Member] | Other Assets [Member] | Fair Value Hedging [Member] | Hedged Commercial Loans [Member]
Derivative [Line Items]
Asset derivatives designated as hedging instruments	2,514	538
Interest Rate Swap Contracts [Member] | Other Assets [Member] | Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Hedged Commercial Loans [Member]
Derivative [Line Items]
Asset derivatives, notional amount	88,679	71,831
Interest Rate Swap Contracts [Member] | Other Liabilities [Member] | Fair Value Hedging [Member] | Hedged Commercial Loans [Member]
Derivative [Line Items]
Liability derivatives designated as hedging instruments	0	165
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	0	18,795
Forward Loan Sale Commitments [Member] | Other Assets [Member]
Derivative [Line Items]
Asset derivatives not designated as hedging instruments	73	2
Forward Loan Sale Commitments [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	$ 15,712	$ 31,024

XML

Derivative Financial Instruments - Schedule of Derivative Financial Instruments on Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Derivative [Line Items]
Derivatives in hedging relationships	$ (1,688)	$ (158)
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivatives in hedging relationships	(42)	(158)
Designated as Hedging Instrument [Member] | Interest Income/ (Expense) [Member] | Interest Rate Swap Contracts [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Derivatives in hedging relationships	(42)	(158)
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivatives not designated as hedging instruments	(1,646)	0
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	450	0
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	1,269	0
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	$ 73	$ 0

XML

Fair Value Measurements - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Mar. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Transfers from Level 1 to Level 2 for financial assets	$ 0	$ 0
Transfers from Level 2 to Level 1 for financial assets	0	0
Transfers from Level 1 to Level 2 for financial liabilities	0	0
Transfers from Level 2 to Level 1 for financial liabilities	0	0
Nonrecurring fair value adjustments on loans held for sale	0
Fair value measurement of intangible assets	$ 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	0.19%
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	0.68%
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	0.36%
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		0.19%
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		0.68%
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		0.36%

XML

Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	$ 0	$ 9,878
Total available for sale securities	2,085,111	1,888,756
Loans held for sale	193,915	265,955
Derivative financial assets	8,197	5,099
Derivative financial liabilities	762	477
Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities		9,878
Total available for sale securities	2,085,111	1,888,756
Loans held for sale	192,673	263,308
Derivative financial assets	8,197	5,099
Derivative financial liabilities	762	477
Available for sale debt securities		1,878,878
Fair Value, Measurements, Recurring [Member] | Interest Rate Lock Commitments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	5,610	4,561
Fair Value, Measurements, Recurring [Member] | TBA Mortgage Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial liabilities	762	312
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	163,106	114,758
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]
Total available for sale securities	163,106
Available for sale debt securities		114,758
State and Political Subdivisions [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	293,712	303,869
State and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	293,712
Available for sale debt securities		303,869
Residential Mortgage-Backed Securities, Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	915,547	814,593
Residential Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	915,547
Available for sale debt securities		814,593
Residential Mortgage-Backed Securities, Non-agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	5,166	5,512
Residential Mortgage-Backed Securities, Non-agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	5,166
Available for sale debt securities		5,512
Asset-Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	146,584	109,970
Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	146,584
Available for sale debt securities		109,970
Commercial Mortgage-Backed Securities, Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	476,779	454,857
Commercial Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	476,779
Available for sale debt securities		454,857
Trust Preferred Collateralized Debt Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	8,064	34,269
Trust Preferred Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	8,064
Available for sale debt securities		34,269
Single Issue Trust Preferred Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	13,146	12,560
Single Issue Trust Preferred Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	13,146
Available for sale debt securities		12,560
Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	63,007	28,490
Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	63,007
Available for sale debt securities		28,490
Financial Services Industry [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities		3,545
Equity securities	485
Other Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities		1
Equity securities	4,668
Marketable Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities		9,878
Marketable Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	11,160
Interest Rate Swap Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	2,514	538
Derivative financial liabilities		165
Forward Loan Sale Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	73
Equity Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities		6,332
Equity securities	6,007
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	7,036	6,664
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 equity securities		6,664
Total available for sale securities	7,036	6,664
Loans held for sale	0	0
Derivative financial assets	0	0
Derivative financial liabilities	0	0
Available for sale debt securities		0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Interest Rate Lock Commitments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | TBA Mortgage Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | 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]
Total available for sale securities	0
Available for sale debt securities		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]
Total available for sale securities	0
Available for sale debt securities		0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Residential Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	0
Available for sale debt securities		0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Residential Mortgage-Backed Securities, Non-agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	0
Available for sale debt securities		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]
Total available for sale securities	0
Available for sale debt securities		0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Commercial Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	0
Available for sale debt securities		0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Trust Preferred Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	0
Available for sale debt securities		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]
Total available for sale securities	0
Available for sale debt securities		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]
Total available for sale securities	7,036
Available for sale debt securities		0
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		331
Equity securities	485
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		1
Equity securities	4,668
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	11,160
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Marketable Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	11,160
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
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Forward Loan Sale Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	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		6,332
Equity securities	6,007
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	2,070,011	1,847,823
Loans held for sale	1,242	2,647
Derivative financial assets	2,587	540
Derivative financial liabilities	762	477
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 equity securities		3,214
Total available for sale securities	2,070,011	1,847,823
Loans held for sale	0	0
Derivative financial assets	2,587	540
Derivative financial liabilities	762	477
Available for sale debt securities		1,844,609
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Interest Rate Lock Commitments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	0	2
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | TBA Mortgage Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial liabilities	762	312
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]
Total available for sale securities	163,106
Available for sale debt securities		114,758
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]
Total available for sale securities	293,712
Available for sale debt securities		303,869
Significant Other Observable Inputs (Level 2) [Member] | Residential Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	915,547
Available for sale debt securities		814,593
Significant Other Observable Inputs (Level 2) [Member] | Residential Mortgage-Backed Securities, Non-agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	5,166
Available for sale debt securities		5,512
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]
Total available for sale securities	146,584
Available for sale debt securities		109,970
Significant Other Observable Inputs (Level 2) [Member] | Commercial Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	476,779
Available for sale debt securities		454,857
Significant Other Observable Inputs (Level 2) [Member] | Trust Preferred Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	0
Available for sale debt securities		0
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]
Total available for sale securities	13,146
Available for sale debt securities		12,560
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]
Total available for sale securities	55,971
Available for sale debt securities		28,490
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		3,214
Equity securities	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
Equity securities	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
Significant Other Observable Inputs (Level 2) [Member] | Marketable Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	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	2,514	538
Derivative financial liabilities		165
Significant Other Observable Inputs (Level 2) [Member] | Forward Loan Sale Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	73
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
Equity securities	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	8,064	34,269
Loans held for sale	192,673	263,308
Derivative financial assets	5,610	4,559
Derivative financial liabilities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities		0
Total available for sale securities	8,064	34,269
Loans held for sale	192,673	263,308
Derivative financial assets	5,610	4,559
Derivative financial liabilities	0	0
Available for sale debt securities		34,269
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | Interest Rate Lock Commitments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	5,610	4,559
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | TBA Mortgage Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial liabilities	0	0
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]
Total available for sale securities	0
Available for sale debt securities		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]
Total available for sale securities	0
Available for sale debt securities		0
Significant Unobservable Inputs (Level 3) [Member] | Residential Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	0
Available for sale debt securities		0
Significant Unobservable Inputs (Level 3) [Member] | Residential Mortgage-Backed Securities, Non-agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	0
Available for sale debt securities		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]
Total available for sale securities	0
Available for sale debt securities		0
Significant Unobservable Inputs (Level 3) [Member] | Commercial Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	0
Available for sale debt securities		0
Significant Unobservable Inputs (Level 3) [Member] | Trust Preferred Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	8,064
Available for sale debt securities		34,269
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]
Total available for sale securities	0
Available for sale debt securities		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]
Total available for sale securities	0
Available for sale debt securities		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
Equity securities	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
Equity securities	0
Significant Unobservable Inputs (Level 3) [Member] | Marketable Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	0
Significant Unobservable Inputs (Level 3) [Member] | Marketable Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	0
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
Significant Unobservable Inputs (Level 3) [Member] | Forward Loan Sale Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	0
Significant Unobservable Inputs (Level 3) [Member] | Equity Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities		$ 0
Equity securities	$ 0

XML

Fair Value 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, 2018	Dec. 31, 2017
Trust Preferred Collateralized Debt Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	$ 34,269	$ 33,552
Included in earnings (or changes in net assets)	28	9
Included in other comprehensive income	217	8,757
Purchases, issuances, and settlements	0	0
Sales	(26,450)	(8,049)
Transfers in and/or out of Level 3	0	0
Balance, end of period	8,064	34,269
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 relating to assets still held at reporting date	0	0
Loans Held For Sale [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	263,308	0
Included in earnings (or changes in net assets)	(14,883)	(58,132)
Acquired in Cardinal merger	0	271,301
Originations	573,732	2,333,927
Sales	(631,834)	(2,408,945)
Transfers in and/or out of Level 3	(27,416)	8,893
Balance, end of period	192,673	263,308
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 relating to assets still held at reporting date	0	0
Interest Rate Lock Commitments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	4,559	0
Acquired in Cardinal merger	0	10,393
Transfers in and/or out of Level 3	1,051	(5,834)
Balance, end of period	5,610	4,559
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 relating to assets still held at reporting date	$ 0	$ 0

XML

Fair Value 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
	Mar. 31, 2018	Mar. 31, 2017
Mortgage Banking [Member]
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]
Income from mortgage banking activities	$ (1,719)	$ 0

XML

Fair Value 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, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Loans held for sale, unpaid principal balance	$ 188,998	$ 257,674
Loans held for sale, fair value	192,673	263,308
Loans held for sale, fair value over/(under) unpaid principal balance	$ 3,675	$ 5,634

XML

Fair Value Measurements - Summary of Financial Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	$ 0	$ 14
YTD Losses, Impaired Loans	1,376	12,291
YTD Losses, OREO	585	4,200
Loans held for sale	192,673	263,308
OREO	22,778	24,348
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	1,242	2,647
Impaired Loans	76,400	88,637
OREO	22,778	24,348
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	0	0
Impaired Loans	0	0
OREO	0	0
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	1,242	2,647
Impaired Loans	56,632	70,950
OREO	22,702	24,151
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	0	0
Impaired Loans	19,768	17,687
OREO	$ 76	$ 197

XML

Fair Value Measurements - Summary of Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 1,139,170	$ 1,666,167	$ 1,667,328	$ 1,434,527
Securities available for sale	2,085,111	1,888,756
Securities held to maturity	20,405	20,428
Other securities	152,287	162,461
Loans held for sale	193,915	265,955
Loans	12,984,417	13,011,421
Derivative financial assets	8,197	5,099
Deposits	13,646,168	13,830,591
Derivative financial liabilities	762	477
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,139,170	1,666,167
Securities available for sale	2,085,111	1,888,756
Securities held to maturity	20,405	20,428
Other securities	152,287	162,461
Loans held for sale	193,915	265,955
Loans	12,907,764	12,934,794
Derivative financial assets	8,197	5,099
Deposits	13,646,168	13,830,591
Short-term borrowings	218,386	477,587
Long-term borrowings	1,344,909	1,363,977
Derivative financial liabilities	762	477
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,139,170	1,666,167
Securities available for sale	2,085,111	1,888,756
Securities held to maturity	20,006	20,018
Other securities	144,673	154,338
Loans held for sale	193,915	265,955
Loans	12,207,257	12,437,797
Derivative financial assets	8,197	5,099
Deposits	13,611,626	14,024,720
Short-term borrowings	218,386	477,587
Long-term borrowings	1,317,352	1,338,754
Derivative financial liabilities	762	477
Marketable Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available for sale		9,878
Marketable Equity Securities [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	11,160
Marketable Equity Securities [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	11,160
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	7,036	6,664
Securities held to maturity	0	0
Other securities	0	0
Loans held for sale	0	0
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
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	11,160
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,139,170	1,666,167
Securities available for sale	2,070,011	1,847,823
Securities held to maturity	16,986	16,998
Other securities	0	0
Loans held for sale	1,242	2,647
Loans	0	0
Derivative financial assets	2,587	540
Deposits	13,611,626	14,024,720
Short-term borrowings	218,386	477,587
Long-term borrowings	1,317,352	1,338,754
Derivative financial liabilities	762	477
Significant Other Observable Inputs (Level 2) [Member] | Marketable Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	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	8,064	34,269
Securities held to maturity	3,020	3,020
Other securities	144,673	154,338
Loans held for sale	192,673	263,308
Loans	12,207,257	12,437,797
Derivative financial assets	5,610	4,559
Deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Derivative financial liabilities	0	$ 0
Significant Unobservable Inputs (Level 3) [Member] | Marketable Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	$ 0

XML

Stock Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
	May 18, 2016	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares of stock, option plan, maximum	1,700,000,000
Aggregate number of shares issued in respect of restricted stock awards	500,000
Options available for award each plan year	1,200,000
Maximum number of shares of restricted stock or shares subject to a restricted stock units award granted				50,000
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				5,000
Vesting period of awards		1/3 per year
Number of Options granted		276,192
Recognition of compensation expense		$ 968	$ 682
Number of share available for grant for prior plans		0
Maximum term for awards granted (years)		10 years
Shares issued related stock option exercises		15,043	22,523
Total intrinsic value of options exercised		$ 246	$ 452
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted		97,004
Vesting period		4 years

XML

Stock Based Compensation - Summary of Stock Option Plans (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disclosure Stock Based Compensation Stock Option Plan [Abstract]
Shares, Outstanding, Beginning balance	1,558,438
Shares, Granted	276,192
Shares, Exercised	(15,043)	(22,523)
Shares, Forfeited or expired	(2,438)
Shares, Outstanding, Ending balance	1,817,149
Shares, Exercisable at March 31, 2018	1,222,889
Aggregate Intrinsic Value, Outstanding at March 31, 2018	$ 9,046,231
Aggregate Intrinsic Value, Exercisable at March 31, 2018	$ 9,027,432
Weighted Average Remaining Contractual Term, Outstanding at March 31, 2018	6 years 3 months 19 days
Weighted Average Remaining Contractual Term, Exercisable at March 31, 2018	4 years 10 months 25 days
Weighted Average Exercise Price, Outstanding, Beginning balance	$ 31.09
Weighted Average Exercise Price, Granted	37.60
Weighted Average Exercise Price, Exercised	19.97
Weighted Average Exercise Price, Forfeited or expired	39.16
Weighted Average Exercise Price, Outstanding, Ending balance	32.16
Weighted Average Exercise Price, Exercisable	$ 28.57

XML

Stock Based Compensation - Status of United's Nonvested Stock Option Awards (Detail)	3 Months Ended
	Mar. 31, 2018 $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Shares, Nonvested, Beginning balance | shares	507,871
Shares, Granted | shares	276,192
Shares, Vested | shares	(187,365)
Shares, Forfeited or expired | shares	(2,438)
Shares, Nonvested, Ending balance | shares	594,260
Weighted-Average Grant Date Fair Value Per Share, Nonvested Beginning balance | $ / shares	$ 7.89
Weighted-Average Grant Date Fair Value Per Share, Granted | $ / shares	7.56
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	7.52
Weighted-Average Grant Date Fair Value Per Share, Forfeited or expired | $ / shares	7.75
Weighted-Average Grant Date Fair Value Per Share, Nonvested Ending balance | $ / shares	$ 7.85

XML

Stock Based Compensation - Changes to United's Restricted Common Shares (Detail) - Restricted Stock [Member]	3 Months Ended
	Mar. 31, 2018 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning balance | shares	170,496
Shares, Granted | shares	97,004
Shares, Vested | shares	(62,285)
Shares, Forfeited | shares	(683)
Number of Shares, Outstanding, Ending balance | shares	204,532
Weighted-Average Grant Date Fair Value Per Share, Outstanding, Beginning balance | $ / shares	$ 40.05
Weighted-Average Grant Date Fair Value Per Share, Granted | $ / shares	37.60
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	37.59
Weighted-Average Grant Date Fair Value Per Share, Forfeited | $ / shares	39.15
Weighted-Average Grant Date Fair Value Per Share, Outstanding, Ending balance | $ / shares	$ 39.64

XML

Employee Benefit Plans - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Retirement Benefits [Abstract]
Employer discretionary contribution amount	$ 7,000
Unrecognized actuarial gains (losses), before tax	56,222
Unrecognized actuarial gains (losses), net of tax	35,420
Amortization expected to be recognized	4,653
Amortization expected to be recognized, net of tax	$ 2,932

XML

Employee Benefit Plans - Net Periodic Pension Cost (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 658	$ 562
Interest cost	1,295	1,265
Expected return on plan assets	(2,522)	(2,027)
Amortization of transition asset	0	0
Recognized net actuarial loss	1,149	1,087
Amortization of prior service cost	0	0
Net periodic pension (benefit) cost	$ 580	$ 887
Weighted-Average Assumptions:
Discount rate	3.83%	4.49%
Expected return on assets	7.00%	7.00%
Rate of compensation increase	3.00%	3.00%
Prior to Age 45 [Member]
Weighted-Average Assumptions:
Rate of compensation increase	3.50%	3.50%

XML

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Accrued interest related to uncertain tax positions	$ 695	$ 589
Federal corporate tax rate	21.00%		35.00%
Deferred tax expense due to the Tax Act	$ 37,732
Effective tax rate	22.48%	34.25%

XML

Comprehensive Income - Components of Total Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income	$ 61,706	$ 38,809
AFS securities with OTTI charges during the period	0	(44)
Related income tax effect	0	16
Less: OTTI charges recognized in net income	0	44
Related income tax benefit	0	(16)
Reclassification of previous noncredit OTTI to credit OTTI	0	0
Related income tax benefit	0	0
Net unrealized gain (loss) on AFS securities with OTTI	0	0
Change in net unrealized gain on AFS securities arising during the period	(22,017)	5,576
Related income tax effect	5,130	(2,063)
Net reclassification adjustment for losses (gains) included in net income	149	(214)
Related income tax (benefit) expense	(35)	79
Total AFS securities - all other	(16,773)	3,378
Net effect of AFS securities on other comprehensive income	(16,773)	3,378
Accretion on the unrealized loss for securities transferred from AFS to the HTM investment portfolio prior to call or maturity	2	2
Related income tax expense	(1)	(1)
Net effect of HTM securities on other comprehensive income	1	1
Pension plan:
Recognized net actuarial loss	1,149	1,087
Related income tax benefit	(416)	(392)
Net effect of change in pension plan asset on other comprehensive income	733	695
Net current-period other comprehensive income, net of tax	(16,039)	4,074
Comprehensive income, net of tax	$ 45,667	$ 42,883

XML

Comprehensive Income - Components of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 3,240,530
Cumulative effect of adopting Accounting Standard Update 2016-01	0
Reclass due to adopting Accounting Standard Update 2018-02	0
Net current-period other comprehensive income, net of tax	(16,039)	$ 4,074
Ending Balance	3,251,313
Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(35,775)
Reclass due to adopting Accounting Standard Update 2018-02	(4,721)
Other comprehensive income before reclassification	0
Amounts reclassified from accumulated other comprehensive income	733
Net current-period other comprehensive income, net of tax	733
Ending Balance	(39,763)
Unrealized Gains/Losses on AFS Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(6,204)
Cumulative effect of adopting Accounting Standard Update 2016-01	(136)
Reclass due to adopting Accounting Standard Update 2018-02	(1,632)
Other comprehensive income before reclassification	(16,887)
Amounts reclassified from accumulated other comprehensive income	114
Net current-period other comprehensive income, net of tax	(16,773)
Ending Balance	(24,745)
Accumulated Unrealized Loss On Securities Available For Sale Transferred To Held To Maturity [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(46)
Other comprehensive income before reclassification	1
Amounts reclassified from accumulated other comprehensive income	0
Net current-period other comprehensive income, net of tax	1
Ending Balance	(45)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(42,025)
Cumulative effect of adopting Accounting Standard Update 2016-01	(136)
Reclass due to adopting Accounting Standard Update 2018-02	(6,353)
Other comprehensive income before reclassification	(16,886)
Amounts reclassified from accumulated other comprehensive income	847
Net current-period other comprehensive income, net of tax	(16,039)
Ending Balance	$ (64,553)

XML

Comprehensive Income - Reclassifications Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Available for sale ("AFS") securities:
Income before income taxes	$ 79,605	$ 59,025
Related income tax effect	(17,899)	(20,216)
Net income	61,706	38,809
Pension plan:
Income before income taxes	79,605	59,025
Related income tax effect	(17,899)	(20,216)
Net income	61,706	$ 38,809
Reclassification out of Accumulated Other Comprehensive Income [Member]
Available for sale ("AFS") securities:
Net income	847
Pension plan:
Net income	847
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains/Losses on AFS Securities [Member]
Available for sale ("AFS") securities:
Reclassification of previous noncredit OTTI to credit OTTI	0
Net reclassification adjustment for losses (gains) included in net income	149
Income before income taxes	149
Related income tax effect	(35)
Net income	114
Pension plan:
Income before income taxes	149
Related income tax effect	(35)
Net income	114
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Available for sale ("AFS") securities:
Income before income taxes	1,149
Related income tax effect	(416)
Net income	733
Pension plan:
Recognized net actuarial loss	1,149
Income before income taxes	1,149
Related income tax effect	(416)
Net income	$ 733

XML

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, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Distributed earnings allocated to common stock	$ 35,679	$ 26,722
Undistributed earnings allocated to common stock	25,919	12,014
Net earnings allocated to common shareholders	$ 61,598	$ 38,736
Average common shares outstanding	104,859,427	80,902,368
Common stock equivalents	303,431	404,172
Average diluted shares outstanding	105,162,858	81,306,540
Earnings per basic common share	$ 0.59	$ 0.48
Earnings per diluted common share	$ 0.59	$ 0.48

XML

Variable Interest Entities - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018 Trust
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]
Number of statutory business trusts	14
Percentage of equity shares of each trust owned by the company	100.00%

XML

Variable Interest Entities - Information Related to Statutory Trusts (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
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 LIBOR + 2.85%
Maturity Date	Dec. 17, 2033
United Statutory Trust IV [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 19, 2003
Amount of Capital Securities Issued	$ 25,000
Interest Rate	3-month LIBOR + 2.85%
Maturity Date	Jan. 23, 2034
United Statutory Trust V [Member]
Variable Interest Entity [Line Items]
Issuance Date	Jul. 12, 2007
Amount of Capital Securities Issued	$ 50,000
Interest Rate	3-month LIBOR + 1.55%
Maturity Date	Oct. 01, 2037
United Statutory Trust VI [Member]
Variable Interest Entity [Line Items]
Issuance Date	Sep. 20, 2007
Amount of Capital Securities Issued	$ 30,000
Interest Rate	3-month LIBOR + 1.30%
Maturity Date	Dec. 15, 2037
Premier Statutory Trust II [Member]
Variable Interest Entity [Line Items]
Issuance Date	Sep. 25, 2003
Amount of Capital Securities Issued	$ 6,000
Interest Rate	3-month LIBOR + 3.10%
Maturity Date	Oct. 08, 2033
Premier Statutory Trust III [Member]
Variable Interest Entity [Line Items]
Issuance Date	May 16, 2005
Amount of Capital Securities Issued	$ 8,000
Interest Rate	3-month LIBOR + 1.74%
Maturity Date	Jun. 15, 2035
Premier Statutory Trust IV [Member]
Variable Interest Entity [Line Items]
Issuance Date	Jun. 20, 2006
Amount of Capital Securities Issued	$ 14,000
Interest Rate	3-month LIBOR + 1.55%
Maturity Date	Sep. 23, 2036
Premier Statutory Trust V [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 14, 2006
Amount of Capital Securities Issued	$ 10,000
Interest Rate	3-month LIBOR + 1.61%
Maturity Date	Mar. 01, 2037
Centra Statutory Trust I [Member]
Variable Interest Entity [Line Items]
Issuance Date	Sep. 20, 2004
Amount of Capital Securities Issued	$ 10,000
Interest Rate	3-month LIBOR + 2.29%
Maturity Date	Sep. 20, 2034
Centra Statutory Trust II [Member]
Variable Interest Entity [Line Items]
Issuance Date	Jun. 15, 2006
Amount of Capital Securities Issued	$ 10,000
Interest Rate	3-month LIBOR + 1.65%
Maturity Date	Jul. 07, 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 LIBOR + 3.30%
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 LIBOR + 1.42%
Maturity Date	Feb. 23, 2036
Cardinal Statutory Trust I [Member]
Variable Interest Entity [Line Items]
Issuance Date	Jul. 27, 2004
Amount of Capital Securities Issued	$ 20,000
Interest Rate	3-month LIBOR + 2.40%
Maturity Date	Sep. 15, 2034
UFBC Capital Trust I [Member]
Variable Interest Entity [Line Items]
Issuance Date	Dec. 30, 2004
Amount of Capital Securities Issued	$ 5,000
Interest Rate	3-month LIBOR + 2.10%
Maturity Date	Mar. 15, 2035

XML

Variable Interest Entities - Summary of Quantitative Information Related to Significant Involvement in Unconsolidated Variable Interest Entities (Detail) - Trust Preferred Securities [Member] - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Aggregate Assets	$ 257,527	$ 266,669
Aggregate Liabilities	248,700	257,674
Risk Of Loss	$ 8,827	$ 8,995

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Segment Information - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018 Segment
Segment Reporting [Abstract]
Number of reportable segments	1
Number of business segment	2

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Segment Information - Summary of Segment Reporting Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Net interest income	$ 144,043	$ 107,620
Provision for loans losses	5,178	5,899
Other income	31,192	20,146
Other expense	90,452	62,842
Income taxes	17,899	20,216
Net income	61,706	38,809
Total assets (liabilities)	18,619,702	14,762,315
Average assets (liabilities)	18,543,797	14,405,733
Operating Segments [Member] | Community Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	146,261	109,660
Provision for loans losses	5,178	5,899
Other income	17,131	16,813
Other expense	72,491	62,752
Income taxes	19,276	19,804
Net income	66,447	38,018
Total assets (liabilities)	18,319,946	14,779,983
Average assets (liabilities)	18,318,613	14,433,409
Operating Segments [Member] | Mortgage Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	376
Provision for loans losses	0
Other income	14,883
Other expense	18,384
Income taxes	(703)
Net income	(2,422)
Total assets (liabilities)	289,925
Average assets (liabilities)	210,172
Other [Member]
Segment Reporting Information [Line Items]
Net interest income	(2,594)	(2,040)
Provision for loans losses	0	0
Other income	(822)	3,333
Other expense	(423)	90
Income taxes	(674)	412
Net income	(2,319)	791
Total assets (liabilities)	9,831	(17,668)
Average assets (liabilities)	$ 15,012	$ (27,676)