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 September 30, 2017

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; 104,992,423 shares outstanding as of October 31, 2017.

UNITED BANKSHARES, INC. AND SUBSIDIARIES

FORM 10-Q

TABLE OF CONTENTS

		Page
PART I. FINANCIAL INFORMATION
Item 1.	Financial Statements
Consolidated Balance Sheets (Unaudited) September  30, 2017 and December 31, 2016			4
Consolidated Statements of Income (Unaudited) for the Three and Nine Months Ended September 30, 2017 and 2016			5
Consolidated Statements of Comprehensive Income (Unaudited) for the Three and Nine Months Ended September 30, 2017 and 2016			7
Consolidated Statement of Changes in Shareholders’ Equity (Unaudited) for the Nine Months Ended September 30, 2017			8
Condensed Consolidated Statements of Cash Flows (Unaudited) for the Nine Months Ended September 30, 2017 and 2016			9
Notes to Consolidated Financial Statements			10
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		61
Item 3.	Quantitative and Qualitative Disclosures about Market Risk		86
Item 4.	Controls and Procedures		89
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings		90
Item 1A.	Risk Factors		90
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds		90
Item 3.	Defaults Upon Senior Securities		91
Item 4.	Mine Safety Disclosures		91
Item 5.	Other Information		91
Item 6.	Exhibits		91
Signatures			92

2

PART I - FINANCIAL INFORMATION

Item 1. FINANCIAL STATEMENTS (UNAUDITED)

The September 30, 2017 and December 31, 2016, consolidated balance sheets of United Bankshares, Inc. and Subsidiaries (“United” or the “Company”), consolidated statements of income and comprehensive income for the three and nine months ended September 30, 2017 and 2016, the related consolidated statement of changes in shareholders’ equity for the nine months ended September 30, 2017, the related condensed consolidated statements of cash flows for the nine months ended September 30, 2017 and 2016, and the notes to consolidated financial statements appear on the following pages.

3

CONSOLIDATED BALANCE SHEETS

UNITED BANKSHARES, INC. AND SUBSIDIARIES

(Dollars in thousands, except par value)

	September 30 2017			December 31 2016
	(Unaudited)			(Note 1)
Assets
Cash and due from banks	$	212,692		$	175,468
Interest-bearing deposits with other banks		1,533,558			1,258,334
Federal funds sold		787			725
Total cash and cash equivalents		1,747,037			1,434,527
Securities available for sale at estimated fair value (amortized cost-$1,654,657 at September 30, 2017 and $1,277,639 at December 31, 2016)		1,649,634			1,259,214
Securities held to maturity (estimated fair value-$19,909 at September 30, 2017 and $31,178 at December 31, 2016)		20,335			33,258
Other investment securities		166,756			111,166
Loans held for sale (at fair value-$311,186 at September 30, 2017 and $0 at December 31, 2016)		315,031			8,445
Loans		13,156,854			10,356,719
Less: Unearned income		(16,386	)		(15,582	)
Loans net of unearned income		13,140,468			10,341,137
Less: Allowance for loan losses		(74,926	)		(72,771	)
Net loans		13,065,542			10,268,366
Bank premises and equipment		104,311			75,909
Goodwill		1,487,607			863,767
Accrued interest receivable		51,607			39,400
Other assets		522,118			414,840
TOTAL ASSETS	$	19,129,978		$	14,508,892
Liabilities
Deposits:
Noninterest-bearing	$	4,134,019		$	3,171,841
Interest-bearing		9,741,278			7,625,026
Total deposits		13,875,297			10,796,867
Borrowings:
Federal funds purchased		25,800			22,235
Securities sold under agreements to repurchase		316,236			237,316
Federal Home Loan Bank borrowings		1,272,115			897,707
Other long-term borrowings		242,131			224,319
Reserve for lending-related commitments		804			1,044
Accrued expenses and other liabilities		133,752			93,657
TOTAL LIABILITIES		15,866,135			12,273,145
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-105,011,878 and 81,068,252 at September 30, 2017 and December 31, 2016, respectively, including 28,752 and 28,278 shares in treasury at September 30, 2017 and December 31, 2016, respectively		262,530			202,671
Surplus		2,126,914			1,205,778
Retained earnings		909,556			872,990
Accumulated other comprehensive loss		(34,163	)		(44,717	)
Treasury stock, at cost		(994	)		(975	)
TOTAL SHAREHOLDERS’ EQUITY		3,263,843			2,235,747
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$	19,129,978		$	14,508,892

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				Nine Months Ended
	September 30				September 30
	2017		2016		2017			2016
Interest income
Interest and fees on loans	$	155,819	$	112,273	$	405,660		$	314,936
Interest on federal funds sold and other short-term investments		4,874		1,107		11,345			2,371
Interest and dividends on securities:
Taxable		9,406		8,764		26,226			24,728
Tax-exempt		1,484		993		4,057			2,685
Total interest income		171,583		123,137		447,288			344,720
Interest expense
Interest on deposits		14,227		7,723		35,281			21,278
Interest on short-term borrowings		430		553		1,149			1,132
Interest on long-term borrowings		6,650		3,792		16,717			10,232
Total interest expense		21,307		12,068		53,147			32,642
Net interest income		150,276		111,069		394,141			312,078
Provision for loan losses		7,279		6,988		21,429			18,690
Net interest income after provision for loan losses		142,997		104,081		372,712			293,388
Other income
Fees from trust and brokerage services		5,052		4,891		14,683			14,552
Fees from deposit services		8,744		8,306		24,978			24,669
Bankcard fees and merchant discounts		1,332		1,551		3,432			3,754
Other service charges, commissions, and fees		535		500		1,533			1,725
Income from bank-owned life insurance		1,403		2,541		3,878			4,913
Income from mortgage banking activities		20,385		982		43,597			2,499
Other income		311		249		1,626			1,050
Total other-than-temporary impairment losses		0		0		(60	)		339
Portion of loss recognized in other comprehensive income		0		0		0			(372	)
Net other-than-temporary impairment losses		0		0		(60	)		(33	)
Net gains on sales/calls of investment securities		467		1		5,214			251
Net investment securities gains		467		1		5,154			218
Total other income		38,229		19,021		98,881			53,380
Other expense
Employee compensation		44,308		24,213		123,240			69,123
Employee benefits		9,578		7,483		27,372			21,380
Net occupancy expense		9,364		6,919		30,061			20,945
Other real estate owned (OREO) expense		2,713		1,342		4,651			4,654
Equipment expense		3,057		2,097		7,493			6,162
Data processing expense		5,597		3,857		14,971			11,004
Bankcard processing expense		449		480		1,356			1,283
FDIC insurance expense		1,540		2,086		5,062			6,341
Other expense		20,046		14,300		57,425			44,796
Total other expense		96,652		62,777		271,631			185,688
Income before income taxes		84,574		60,325		199,962			161,080
Income taxes		27,836		18,846		67,356			53,103
Net income	$	56,738	$	41,479	$	132,606		$	107,977

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CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - continued

UNITED BANKSHARES, INC. AND SUBSIDIARIES

(Dollars in thousands, except per share data)

	Three Months Ended				Nine Months Ended
	September 30				September 30
	2017		2016		2017		2016
Earnings per common share:
Basic	$	0.54	$	0.54	$	1.39	$	1.49
Diluted	$	0.54	$	0.54	$	1.39	$	1.48
Dividends per common share	$	0.33	$	0.33	$	0.99	$	0.99
Average outstanding shares:
Basic		104,760,153		76,218,573		95,040,664		72,413,246
Diluted		105,068,122		76,647,773		95,450,626		72,746,363

See notes to consolidated unaudited financial statements

6

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)

UNITED BANKSHARES, INC. AND SUBSIDIARIES

(Dollars in thousands)

	Three Months Ended					Nine Months Ended
	September 30					September 30
	2017		2016			2017		2016
Net income	$	56,738	$	41,479		$	132,606	$	107,977
Change in net unrealized gain (loss) on available-for-sale (AFS) securities, net of tax		1,964		(4,865	)		8,443		7,944
Accretion of the net unrealized loss on the transfer of AFS securities to held-to-maturity (HTM) securities, net of tax		2		2			4		4
Change in pension plan assets, net of tax		717		777			2,107		2,235
Comprehensive income, net of tax	$	59,421	$	37,393		$	143,160	$	118,160

7

CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS’ EQUITY (Unaudited)

UNITED BANKSHARES, INC. AND SUBSIDIARIES

(Dollars in thousands, except per share data)

	Nine Months Ended September 30, 2017
											Accumulated
	Common Stock										Other						Total
			Par					Retained			Comprehensive			Treasury			Shareholders’
	Shares		Value		Surplus			Earnings			Income (Loss)			Stock			Equity
Balance at January 1, 2017		81,068,252	$	202,671	$	1,205,778		$	872,990		($	44,717	)	($	975	)	$	2,235,747
Comprehensive income:
Net income		0		0		0			132,606			0			0			132,606
Other comprehensive income, net of tax:		0		0		0			0			10,554			0			10,554
Total comprehensive income, net of tax																		143,160
Stock based compensation expense		0		0		2,589			0			0			0			2,589
Acquisition of Cardinal Financial Corporation (23,690,589 shares)		23,690,589		59,226		916,028			0			0			0			975,254
Purchase of treasury stock (82 shares)		0		0		0			0			0			(1	)		(1	)
Distribution of treasury stock from deferred compensation plan (28 shares)		0		0		0			0			0			1			1
Cash dividends ($0.99 per share)		0				0			(96,040	)		0			0			(96,040	)
Grant of restricted stock (89,475 shares)		89,475		224		(224	)		0			0			0			0
Forfeiture of restricted stock (420 shares)		0		0		19			0			0			(19	)		0
Common stock options exercised (163,562 shares)		163,562		409		2,724			0			0			0			3,133
Balance at September 30, 2017		105,011,878	$	262,530	$	2,126,914		$	909,556		($	34,163	)	($	994	)	$	3,263,843

See notes to consolidated unaudited financial statements.

8

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

UNITED BANKSHARES, INC. AND SUBSIDIARIES

(Dollars in thousands)

	Nine Months Ended
	September 30
	2017			2016
NET CASH PROVIDED BY OPERATING ACTIVITIES	$	125,151		$	125,948
INVESTING ACTIVITIES
Proceeds from maturities and calls of securities held to maturity		12,929			5,039
Proceeds from sales of securities available for sale		245,065			103,411
Proceeds from maturities and calls of securities available for sale		386,496			264,834
Purchases of securities available for sale		(630,061	)		(385,030	)
Purchases of bank premises and equipment		(11,115	)		(4,150	)
Proceeds from sales of bank premises and equipment		13			229
Purchases of other investment securities		(51,941	)		(61,193	)
Proceeds from sales and redemptions of other investment securities		14,393			47,285
Proceeds from the sales of OREO properties		4,908			15,435
Acquisition of subsidiaries, net of cash paid		44,531			29,330
Net change in loans		369,233			(111,723	)
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		384,451			(96,533	)
FINANCING ACTIVITIES
Cash dividends paid		(86,709	)		(71,129	)
Acquisition of treasury stock		(1	)		(1	)
Proceeds from exercise of stock options		3,296			4,668
Repayment of long-term Federal Home Loan Bank borrowings		(845,207	)		(725,077	)
Proceeds from issuance of long-term Federal Home Loan Bank borrowings		815,000			795,000
Distribution of treasury stock for deferred compensation plan		1			1
Changes in:
Deposits		(269,742	)		265,183
Federal funds purchased, securities sold under agreements to repurchase and other short-term borrowings		186,270			(36,889	)
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES		(197,092	)		231,756
Increase in cash and cash equivalents		312,510			261,171
Cash and cash equivalents at beginning of year		1,434,527			857,335
Cash and cash equivalents at end of period	$	1,747,037		$	1,118,506
Supplemental information
Noncash investing activities:
Transfers of loans to OREO	$	3,829		$	19,228

See notes to consolidated unaudited financial statements.

9

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 September 30, 2017 and 2016 and for the three-month and nine-month periods then ended have not been audited. The consolidated balance sheet as of December 31, 2016 has been extracted from the audited financial statements included in United’s 2016 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 2016 Annual Report of United on Form 10-K. To conform to the 2017 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 considers all of its principal business activities to be bank related. All significant intercompany accounts and transactions have been eliminated in the consolidated financial statements. Dollars are in thousands, except per share or unless otherwise noted.

New Accounting Standards

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 Entices 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; early adoption is permitted. 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

10

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 is not expected to 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 is effective for United on January 1, 2018, with early adoption permitted. 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 2017-04, “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 is effective for United on January 1, 2018, 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 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 is effective for United on January 1, 2018, 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 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

11

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.” United adopted ASU 2016-09 on January 1, 2017 utilizing the modified retrospective method. ASU 2016-09 changes certain aspects of accounting for share-based payments to employees. The new guidance, amongst other things, requires 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 $146 and $960 for the three and nine months ended September 30, 2017, respectively. 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. United elected to apply that change in cash flow classification on a retrospective basis, which resulted in an $2,083 increase to net cash from operating activities and a corresponding decrease to net cash from financing activities in the accompanying Consolidated Statement of Cash Flows for the first nine months of 2016. The recognition of excess tax benefits and deficiencies in the income statement was adopted prospectively. 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 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 and management is currently evaluating the impact this standard may have on the Company’s financial condition or results of operations.

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 is effective for United on January 1, 2018 and is not expected to 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. ASU 2014-09 will be effective for United on January 1, 2018. The Company intends to adopt the amendments of ASU 2014-09 beginning January 1, 2018 through the modified-retrospective transition method with a cumulative effect adjustment to opening retained earnings. The

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Company’s 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 and gains and losses from securities are not impacted by the standard. Thus far, we have identified revenue streams within the scope of the guidance and analyzed those revenue streams to determine the impact of the standard. We have reviewed and evaluated a number of revenue contracts to determine the impact the new recognition methods will have on revenue recognition. Based on this review, ASU 2014-09 may require the Company to change how it recognizes certain recurring revenue streams related to noninterest income including fees from trust and brokerage services. Although we currently do not expect this standard to have a material impact on the timing or amount of revenue, we are still assessing the potential impact on the Company’s consolidated financial statements.

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 $622,513, $28,723 and $1,230, 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 September 30, 2017, the discounts on leases and trust preferred issuances had an average estimated remaining life of 6.00 years and 16.97 years, respectively, and the premiums on the interest-bearing deposits and the FHLB advances each had an average estimated remaining life of 5.00 years and 4.81 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 September 30, 2017. The estimated fair values of the

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acquired assets and assumed liabilities, including identifiable intangible assets are preliminary as of September 30, 2017 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 valuation 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		28,723
George Mason trade name intangible		1,230
Other assets		135,383
Total identifiable assets	$	4,069,818
Identifiable liabilities:
Deposits	$	3,349,812
Short-term borrowings		96,215
Long-term borrowings		220,119
Unfavorable lease liability		2,281
Other liabilities		48,650
Total identifiable liabilities		3,717,077
Preliminary fair value of net assets acquired including identifiable intangible assets		352,741
Preliminary resulting goodwill	$	622,513

The operating results of United for the nine months ended September 30, 2017 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 $157,326 in total revenues, which represents net interest income plus other income, and $81,817 in net income from the period from the Cardinal Acquisition Date to September 30, 2017. These amounts are included in United’s consolidated financial statements as of and for the nine months ended September 30, 2017. 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 nine months ended September 30, 2017 and 2016, as if the Cardinal merger had occurred on January 1, 2017 and 2016, respectively. 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 2017 and 2016 that may not have been necessary had the acquired loans been recorded at fair value as of the beginning of 2017 and 2016. 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 Nine Months Ended September 30
	2017		2016
Total Revenues (1)	$	573,790	$	585,223
Net Income		136,104		160,731

⁽¹⁾  Represents net interest income plus other income

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Bank of Georgetown

After the close of business on June 3, 2016 (BOG Acquisition Date), United acquired 100% of the outstanding common stock of Bank of Georgetown, a privately held community bank headquartered in Washington, D.C. With this transaction, United continues to expand its existing footprint in the D.C. Metro Region. The results of operations of Bank of Georgetown are included in the consolidated results of operations from the BOG Acquisition Date.

At consummation, Bank of Georgetown had assets of $1,278,837, loans of $999,773, and deposits of $971,369. The transaction was accounted for under the acquisition method of accounting and accordingly, assets acquired, liabilities assumed and consideration exchanged were recorded at estimated fair value on the BOG Acquisition Date.

The aggregate purchase price was $264,505, including common stock valued at $253,799, stock options assumed valued at $10,696, and cash paid for fractional shares of $10. The number of shares issued in the transaction was 6,527,746, which were valued based on the closing market price of $38.88 for United’s common shares on June 3, 2016. The purchase price has been allocated to the identifiable tangible and intangible assets resulting in additions to goodwill and core deposit intangibles of $152,845 and $9,058, respectively. The core deposit intangibles are being amortized over ten years.

Because the consideration paid was greater than the net fair value of the acquired assets and liabilities, the Company recorded goodwill as part of the acquisition. None of the goodwill from the Bank of Georgetown 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 the Bank of Georgetown. As a result of the merger, United recorded fair value discounts of $43,072 on the loans acquired and $1,550 on leasehold improvements, respectively, and premiums on interest-bearing deposits acquired of $316 and a premium on long-term FHLB advances of $2,659. The remaining discount and premium amounts are being amortized or accreted on an accelerated basis over each asset’s or liability’s estimated remaining life at the time of acquisition. At September 30, 2017, the premium on the interest-bearing deposits and the FHLB advances had an estimated remaining life of 0.33 years and 7.92 years, respectively. United assumed approximately $300 of liabilities to provide severance benefits to terminated employees of Bank of Georgetown, which has no remaining balance as of September 30, 2017. The measurement period has closed and the estimated fair values of the acquired assets and assumed liabilities, including identifiable intangible assets were considered final as of June 30, 2017.

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 valuation 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 Bank of Georgetown’s previously established allowance for loan losses.

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

	June 3, 2016
Contractually required principal and interest at acquisition	$	1,275,398
Contractual cash flows not expected to be collected		(33,980	)
Expected cash flows at acquisition		1,241,418
Interest component of expected cash flows		(274,548	)
Basis in acquired loans at acquisition – estimated fair value	$	966,870

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 $138,125, $117,564, and $95,570, respectively.

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The consideration paid for Bank of Georgetown’s common equity and the fair value of acquired identifiable assets and liabilities assumed as of the BOG Acquisition Date were as follows:

Purchase price:
Value of common shares issued (6,527,746 shares)	$	253,799
Fair value of stock options assumed		10,696
Cash for fractional shares		10
Total purchase price		264,505
Identifiable assets:
Cash and cash equivalents		29,340
Investment securities		219,783
Loans		966,870
Premises and equipment		5,574
Core deposit intangibles		9,058
Other assets		31,605
Total identifiable assets	$	1,262,230
Identifiable liabilities:
Deposits	$	971,685
Short-term borrowings		101,021
Long-term borrowings		67,659
Other liabilities		11,532
Total identifiable liabilities		1,151,897
Fair value of net assets acquired including identifiable intangible assets		110,333
Resulting goodwill	$	154,172

3. INVESTMENT SECURITIES

Securities held for indefinite periods of time and all marketable equity securities 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.

	September 30, 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	$	115,224	$	864	$	222	$	115,866	$	0
State and political subdivisions		305,096		2,567		2,522		305,141		0
Residential mortgage-backed securities
Agency		715,003		3,819		4,122		714,700		0
Non-agency		5,259		587		0		5,846		86
Commercial mortgage-backed securities
Agency		420,115		2,081		1,404		420,792		0
Asset-backed securities		13,422		10		3		13,429		0
Trust preferred collateralized debt obligations		38,186		317		6,844		31,659		20,770
Single issue trust preferred securities		13,404		404		1,341		12,467		0
Other corporate securities		18,998		256		0		19,254		0
Marketable equity securities		9,950		541		11		10,480		0
Total	$	1,654,657	$	11,446	$	16,469	$	1,649,634	$	20,856

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	December 31, 2016
			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	$	95,247	$	698	$	159	$	95,786	$	0
State and political subdivisions		196,350		1,364		4,902		192,812		0
Residential mortgage-backed securities
Agency		585,208		3,999		5,111		584,096		0
Non-agency		6,629		426		12		7,043		86
Commercial mortgage-backed securities
Agency		304,635		1,948		1,242		305,341		0
Asset-backed securities		217		0		0		217		0
Trust preferred collateralized debt obligations		48,558		729		15,735		33,552		25,952
Single issue trust preferred securities		13,363		284		2,170		11,477		0
Other corporate securities		14,996		66		0		15,062		0
Marketable equity securities		12,436		1,398		6		13,828		0
Total	$	1,277,639	$	10,912	$	29,337	$	1,259,214	$	26,038

(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 September 30, 2017 and December 31, 2016.

	Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
September 30, 2017
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	27,053	$	128	$	19,932	$	94
State and political subdivisions		83,310		896		38,004		1,626
Residential mortgage-backed securities
Agency		351,936		3,410		31,690		712
Non-agency		0		0		0		0
Commercial mortgage-backed securities
Agency		228,307		1,218		12,272		186
Asset-backed securities		6,760		3		0		0
Trust preferred collateralized debt obligations		0		0		29,544		6,844
Single issue trust preferred securities		0		0		4,365		1,341
Marketable equity securities		0		0		352		11
Total	$	697,366	$	5,655	$	136,159	$	10,814

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	Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
December 31, 2016
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	24,101	$	159	$	0	$	0
State and political subdivisions		116,300		4,902		0		0
Residential mortgage-backed securities
Agency		309,376		5,111		0		0
Non-agency		0		0		218		12
Commercial mortgage-backed securities
Agency		162,479		1,242		0		0
Asset-backed securities		0		0		0		0
Trust preferred collateralized debt obligations		0		0		28,579		15,735
Single issue trust preferred securities		0		0		8,185		2,170
Marketable equity securities		357		6		0		0
Total	$	612,613	$	11,420	$	36,982	$	17,917

Marketable 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 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 September 30				Nine Months Ended September 30
	2017		2016		2017		2016
Proceeds from sales and calls	$	64,257	$	174,015	$	631,561	$	368,246
Gross realized gains		1,781		3		2,840		259
Gross realized losses		1,314		1		1,396		7

At September 30, 2017, gross unrealized losses on available for sale securities were $16,469 on 375 securities of a total portfolio of 822 available for sale securities. Securities in an unrealized loss position at September 30, 2017 consisted primarily of pooled trust preferred collateralized debt obligations (“Trup Cdos”), single issue trust preferred securities and agency residential mortgage-backed securities. The Trup Cdos and the single issue trust preferred securities relate mainly to securities of financial institutions. The state and political subdivisions securities relate to securities issued by various municipalities. The agency residential mortgage-backed securities relate to 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 $305,096 at September 30, 2017. As of September 30, 2017, approximately 75% of the portfolio was supported by the general obligation of the issuing municipality, which allows for the securities to be repaid by any means

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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 September 30, 2017. 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 September 30, 2017.

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 $1,135,118 at September 30, 2017. Of the $1,135,118 amount, $420,115 was related to agency commercial mortgage-backed securities and $715,003 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 September 30, 2017.

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 $5,259 at September 30, 2017. Of the $5,259 amount, $627 was rated above investment grade and $4,632 was rated below investment grade. Approximately 18% of the portfolio includes collateral that was originated during the year of 2005 or before. The remaining 82% includes collateral that was originated in the years of 2006 and 2007. 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 September 30, 2017.

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 third quarter of 2017, 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 available for sale single issue trust preferred securities’ ratings ranged from a low of Ba1 to a high of BBB-. The amortized cost of available for sale single issue trust preferred securities as of September 30, 2017 consisted of $3,017 in investment grade bonds, $4,680 in split-rated bonds and $5,707 in unrated bonds. All of the unrated bonds were in an unrealized loss position for twelve months or longer as of September 30, 2017.

Trust preferred collateralized debt obligations (Trup Cdos)

In order to determine how and when the Company recognizes OTTI, 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 September 30, 2017, the Company has determined that it does not intend to sell any pooled trust preferred security 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. The Company discounts the security-specific

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cash flow projection at the security-specific interest rate and compares the present value to the amortized cost. Management’s cash flow analysis was performed for each security and considered the current deferrals and defaults within the underlying collateral, the likelihood that current deferrals would cure or ultimately default, potential future deferrals and defaults, potential prepayments, cash reserves, excess interest spread, credit analysis of the underlying collateral and the priority of payments in the cash flow structure. The underlying collateral analysis for each issuer took into consideration multiple factors including capital adequacy, earnings trends and asset quality. After completing its analysis of estimated cash flows, management determined that none of the Trup Cdos experienced an adverse change in cash flows during the third quarter of 2017, as the expected discounted cash flows from these particular securities were greater than or equal to the discounted cash flows originally expected at purchase or from the previous date of other-than-temporary impairment (cash flows are discounted at the contractual coupon rate for purposes of assessing OTTI).

There was no credit-related other-than-temporary impairment recognized in earnings for the third quarter of 2017 related to these securities. The balance of noncredit-related other-than-temporary impairment recognized on United’s Trup Cdos portfolio was $20,770 at September 30, 2017.

The following is a summary of the available for sale Trup Cdos as of September 30, 2017:

								Amortized Cost
Class	Amortized Cost		Fair Value		Unrealized Loss			Investment Grade		Split Rated		Below Investment Grade
Senior – Bank	$	5,208	$	5,287	$	(79	)	$	3,410	$	0	$	1,798
Mezzanine – Bank (now in senior position)		6,428		5,518		910			0		0		6,428
Mezzanine – Bank		22,656		17,918		4,738			0		0		22,656
Mezzanine – Bank & Insurance (combination)		3,894		2,936		958			0		0		3,894
Totals	$	38,186	$	31,659	$	6,527		$	3,410	$	0	$	34,776

While a large difference remains between the fair value and amortized cost, the Company believes the remaining unrealized losses are related to the illiquid market for Trup Cdos rather than an adverse change in expected cash flows. The expected future cash flow substantiates the return of the remaining amortized cost of the security. The Company believes the following evidence supports the position that the remaining unrealized loss is related to the illiquid market for Trup Cdos:

• The market for new issuance of Trup Cdos was robust from 2000 to 2007 with an estimated $60 billion in new issuance. The new market issuances came to an abrupt halt in 2007.

• The secondary market for Trup Cdos ultimately became illiquid and although the market has improved, trading activity remains limited on these securities. In making this determination, the Company holds discussions with institutional traders to identify trends in the number and type of transactions related to the Trup Cdos.

• The presence of a below-investment grade rating severely limits the pool of available buyers and contributes to the illiquidity of the market.

• Trup Cdos have a more complex structure than most debt instruments, making projections of tranche returns difficult for non-specialists in the product. Deferral features available to the underlying issuers within each pool are unique to these securities. Additionally, it can be difficult for market participants to predict whether deferrals will ultimately cure or ultimately default. Due to the lack of transparency, market participants will require a higher risk premium, thus resulting in higher required discount rates.

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• The variability of cash flows at the time the securities were originated was expected to be very limited. Due to the financial crisis, Trup Cdos have experienced more substantive variability of cash flows compared to expectations, resulting in a higher risk premium when evaluating discount rates.

• The limited, yet relevant, observable inputs indicate that market yield requirements for Trup Cdos, on a credit-adjusted basis, remained very high relative to discount rates at purchase and compared to other similarly rated debt securities.

Overall, the Company believes the lack of new issuances, illiquid secondary market, limited pool of buyers, below investment grade ratings, and complex structures are the key drivers of the remaining unrealized losses in the Company’s Trup Cdos and the robust expected cash flow analysis substantiates the return of the remaining amortized cost under ASC topic 320.

Management also considered the ratings of the Company’s bonds in its portfolio and the extent of downgrades in United’s impairment analysis. However, management considered it imperative to independently perform its own credit analysis based on cash flows as described. The ratings of the investment grade Trup Cdos in the table above range from a low of AA to a high of Aaa. The below investment grade Trup Cdos range from a low of C to a high of Ba2.

On the Trup Cdos that have not been deemed to be other-than-temporarily impaired, the collateralization ratios range from a low of 105.4% to a high of 414.5%, with a median of 260.0%, and a weighted average of 283.8%. The collateralization ratio is defined as the current performing collateral in a security, divided by the current balance of the specific tranche the Company owns, plus any debt which is senior or pari passu with the Company’s security’s priority level. Performing collateral excludes the balance of any issuer that has either defaulted or has deferred its interest payment. It is not uncommon for the collateralization of a security that is not other-than-temporarily impaired to be less than 100% due to the excess spread built into the securitization structure.

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 September 30, 2017 is other-than-temporarily impaired. For these securities, United believes the decline in value resulted from changes in market interest rates, credit spreads and liquidity, not a change in the expected contractual cash flows. Based on a review of each of the securities in the investment portfolio, management concluded that it expected to recover the amortized cost basis of the investment in such securities.

Equity securities

The amortized cost of United’s equity securities was $9,950 at September 30, 2017. For equity 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 equity securities were other-than-temporarily impaired at September 30, 2017.

Other investment securities (cost method)

During the third quarter of 2017, United also evaluated all of its cost method investments to determine if certain events or changes in circumstances during the third quarter of 2017 had a significant adverse effect on the fair value of any of its cost method securities. United determined that there were no events or changes in circumstances during the third quarter which would have an adverse effect on the fair value of any of its cost method securities. Therefore, no impairment was recorded.

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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 September 30					Nine Months Ended September 30
	2017			2016		2017			2016
Balance of cumulative credit losses at beginning of period	$	22,162		$	22,162	$	22,162		$	23,773
Additional credit losses on securities for which OTTI was previously recognized		0			0		0			33
Reductions during the period for securities for which the amount previously recognized in other comprehensive income was recognized in earnings		(4,102	)		0		(4,102	)		(1,644	)
Balance of cumulative credit losses at end of period	$	18,060		$	22,162	$	18,060		$	22,162

The amortized cost and estimated fair value of securities available for sale at September 30, 2017 and December 31, 2016 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.

	September 30, 2017				December 31, 2016
			Estimated				Estimated
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	57,720	$	57,622	$	53,286	$	53,330
Due after one year through five years		370,020		371,007		296,181		297,385
Due after five years through ten years		342,176		343,326		213,094		213,791
Due after ten years		874,791		867,199		702,642		680,880
Marketable equity securities		9,950		10,480		12,436		13,828
Total	$	1,654,657	$	1,649,634	$	1,277,639	$	1,259,214

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

	September 30, 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	$	5,215	$	400	$	0	$	5,615
State and political subdivisions		5,674		12		0		5,686
Residential mortgage-backed securities
Agency		26		4		0		30
Single issue trust preferred securities		9,400		0		842		8,558
Other corporate securities		20		0		0		20
Total	$	20,335	$	416	$	842	$	19,909

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	December 31, 2016
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	5,295	$	570	$	0	$	5,865
State and political subdivisions		8,598		17		0		8,615
Residential mortgage-backed securities
Agency		30		5		0		35
Single issue trust preferred securities		19,315		0		2,672		16,643
Other corporate securities		20		0		0		20
Total	$	33,258	$	592	$	2,672	$	31,178

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 September 30, 2017, the Company’s largest held-to-maturity single-issue trust preferred exposure was to SunTrust Bank ($7,424). The two held-to-maturity single-issue trust preferred exposures with at least one rating below investment grade included SunTrust Bank ($7,424) 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 third quarter and first nine months of 2017 and 2016.

The amortized cost and estimated fair value of debt securities held to maturity at September 30, 2017 and December 31, 2016 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.

	September 30, 2017				December 31, 2016
			Estimated				Estimated
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	0	$	0	$	1,040	$	1,041
Due after one year through five years		9,189		9,600		8,268		8,850
Due after five years through ten years		5,726		5,382		3,585		3,589
Due after ten years		5,420		4,927		20,365		17,698
Total	$	20,335	$	19,909	$	33,258	$	31,178

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 $1,312,813 and $1,137,408 at September 30, 2017 and December 31, 2016, respectively.

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4. LOANS

Major classes of loans are as follows:

	September 30, 2017		December 31, 2016
Commercial, financial and agricultural:
Owner-occupied commercial real estate	$	1,364,757	$	1,049,885
Nonowner-occupied commercial real estate		4,686,183		3,425,453
Other commercial loans		1,757,741		1,613,437
Total commercial, financial & agricultural		7,808,681		6,088,775
Residential real estate		3,050,868		2,403,437
Construction & land development		1,599,632		1,255,738
Consumer:
Bankcard		13,775		14,187
Other consumer		683,898		594,582
Total gross loans	$	13,156,854	$	10,356,719

The table above does not include loans held for sale of $315,031 and $8,445 at September 30, 2017 and December 31, 2016, respectively. The increase was due to the acquisition of Cardinal and it mortgage banking subsidiary, George Mason. 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 $227,754 or 1.73% of total gross loans at September 30, 2017 and $171,596 or 1.66% of total gross loans at December 31, 2016. The contractual principal in these acquired impaired loans was $310,609 and $231,096 at September 30, 2017 and December 31, 2016, 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 nine months of 2017 follows:

Accretable yield at the beginning of the period	$	29,165
Accretion (including cash recoveries)		(11,312	)
Additions		17,444
Net reclassifications to accretable from non-accretable		2,727
Disposals (including maturities, foreclosures, and charge-offs)		(2,367	)
Accretable yield at the end of the period	$	35,657

United’s subsidiary banks have made loans to the directors and officers of United and its subsidiaries, and to their affiliates. The aggregate dollar amount of these loans was $364,774 and $255,476 at September 30, 2017 and December 31, 2016, 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

25

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 September 30, 2017, United had TDRs of $46,132 as compared to $21,152 as of December 31, 2016. Of the $46,132 aggregate balance of TDRs at September 30, 2017, $29,717 was on nonaccrual status and included in the “Loans on Nonaccrual Status” on the following pages. Of the $21,152 aggregate balance of TDRs at December 31, 2016, $11,106 was on nonaccrual status and included in the “Loans on Nonaccrual Status” on the following page. As of September 30, 2017, there were no commitments to lend additional funds to debtors owing receivables whose terms have been modified in TDRs. At September 30, 2017, United had restructured loans in the amount of $2,043 that were modified by a reduction in the interest rate, $4,507 that were modified by a combination of a reduction in the interest rate and the principal and $39,582 that was 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.

No loans were restructured during the three months ended September 30, 2017. The following table sets forth United’s troubled debt restructurings that were restructured during the three months ended September 30, 2016, segregated by class of loans:

	Troubled Debt Restructurings
	For the Three Months Ended
	September 30, 2016
	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		1		110		110
Residential real estate		0		0		0
Construction & land development		0		0		0
Consumer:
Bankcard		0		0		0
Other consumer		0		0		0
Total		1	$	110	$	110

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The following table sets forth United’s troubled debt restructurings that were restructured during the nine months ended September 30, 2017 and 2016, segregated by class of loans:

	Troubled Debt Restructurings
	For the Nine Months Ended
	September 30, 2017						September 30, 2016
	Number of Contracts		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment		Number of Contracts		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment
Commercial real estate:
Owner-occupied		1	$	5,333	$	5,333		1	$	1,190	$	1,184
Nonowner-occupied		0		0		0		0		0		0
Other commercial		8		24,102		22,291		5		2,250		1,725
Residential real estate		0		0		0		1		1,400		1,400
Construction & land development		1		1,456		1,400		0		0		0
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		0		0		0		0		0		0
Total		10	$	30,891	$	29,024		7	$	4,840	$	4,309

During the first nine months of 2017, $29,024 of restructured loans were modified by a change in terms. During the third quarter and first nine months of 2016, $110 and $2,909, respectively, of restructured loans were modified by a change in loan terms. In addition, during the first nine months of 2016, $1,400 of restructured loans were modified by a combination of a reduction in the interest rate and an extension of the maturity date. 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.

The following table presents troubled debt restructurings, by class of loan, that had charge-offs during the three months and nine months ended September 30, 2017.

	Three Months Ended September 30, 2017				Nine Months Ended September 30, 2017
(In thousands)	Number of Contracts		Recorded Investment		Number of Contracts		Recorded Investment
Troubled Debt Restructurings
Commercial real estate:
Owner-occupied		0	$	0		0	$	0
Nonowner-occupied		0		0		0		0
Other commercial		1		1,495		1		1,495
Residential real estate		0		0		0		0
Construction & land development		0		0		0		0
Consumer:
Bankcard		0		0		0		0
Other consumer		0		0		0		0
Total		1	$	1,495		1	$	1,495

No loans restructured during the twelve-month period ended September 30, 2016 subsequently defaulted, resulting in a principal charge-off during the three months and first nine months ended September 30, 2016.

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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 September 30, 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	$	9,704	$	6,912	$	16,616	$	1,348,141	$	1,364,757	$	0
Nonowner-occupied		7,686		20,797		28,483		4,657,700		4,686,183		0
Other commercial		13,589		79,342		92,931		1,664,810		1,757,741		802
Residential real estate		33,654		25,564		59,218		2,991,650		3,050,868		5,298
Construction & land development		3,351		17,852		21,203		1,578,429		1,599,632		14,828
Consumer:
Bankcard		385		210		595		13,180		13,775		210
Other consumer		8,087		1,305		9,392		674,506		683,898		1,111
Total	$	76,456	$	151,982	$	228,438	$	12,928,416	$	13,156,854	$	22,249

(1) Other includes loans with a recorded investment of $227,754 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, 2016

(In thousands)	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	$	5,850	$	3,981	$	9,831	$	1,040,054	$	1,049,885	$	94
Nonowner-occupied		9,288		20,847		30,135		3,395,318		3,425,453		172
Other commercial		15,273		42,766		58,039		1,555,398		1,613,437		2,518
Residential real estate		29,976		25,991		55,967		2,347,470		2,403,437		4,216
Construction & land development		3,809		7,779		11,588		1,244,150		1,255,738		33
Consumer:
Bankcard		422		141		563		13,624		14,187		141
Other consumer		10,015		1,712		11,727		582,855		594,582		1,412
Total	$	74,633	$	103,217	$	177,850	$	10,178,869	$	10,356,719	$	8,586

(1) Other includes loans with a recorded investment of $171,596 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

	September 30, 2017		December 31, 2016
Commercial real estate:
Owner-occupied	$	6,912	$	3,887
Nonowner-occupied		20,797		20,675
Other commercial		78,540		40,248
Residential real estate		20,266		21,775
Construction & land development		3,024		7,746
Consumer:
Bankcard		0		0
Other consumer		194		300
Total	$	129,733	$	94,631

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 September 30, 2017
	Commercial Real Estate				Other Commercial		Construction & Land Development
	Owner- occupied		Nonowner- occupied
Grade:
Pass	$	1,282,657	$	4,544,799	$	1,611,250	$	1,498,656
Special mention		23,827		44,080		47,450		19,872
Substandard		58,273		97,304		98,933		81,104
Doubtful		0		0		108		0
Total	$	1,364,757	$	4,686,183	$	1,757,741	$	1,599,632
As of December 31, 2016
	Commercial Real Estate				Other Commercial		Construction & Land Development
	Owner- occupied		Nonowner- occupied
Grade:
Pass	$	963,503	$	3,284,497	$	1,463,797	$	1,126,742
Special mention		20,490		36,462		26,537		52,327
Substandard		65,892		104,494		122,893		76,669
Doubtful		0		0		210		0
Total	$	1,049,885	$	3,425,453	$	1,613,437	$	1,255,738

Credit Quality Indicators

Consumer Credit Exposure

As of September 30, 2017
	Residential Real Estate		Bankcard		Other Consumer
Grade:
Pass	$	2,999,614	$	13,180	$	674,447
Special mention		18,953		385		8,134
Substandard		32,301		210		1,317
Doubtful		0		0		0
Total	$	3,050,868	$	13,775	$	683,898
As of December 31, 2016
	Residential Real Estate		Bankcard		Other Consumer
Grade:
Pass	$	2,348,017	$	13,624	$	582,704
Special mention		18,240		422		10,132
Substandard		36,995		141		1,746
Doubtful		185		0		0
Total	$	2,403,437	$	14,187	$	594,582

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.

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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
	September 30, 2017						December 31, 2016
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	64,592	$	65,355	$	0	$	46,575	$	47,108	$	0
Nonowner-occupied		143,100		143,552		0		92,654		93,104		0
Other commercial		55,022		58,785		0		46,064		48,308		0
Residential real estate		20,873		22,546		0		22,747		24,404		0
Construction & land development		30,959		33,225		0		19,863		21,746		0
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		16		16		0		36		36		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	8,220	$	8,220	$	923	$	1,787	$	2,082	$	815
Nonowner-occupied		12,182		12,182		1,786		17,938		17,938		2,524
Other commercial		70,344		80,415		21,890		43,774		46,188		13,441
Residential real estate		13,743		15,082		1,659		12,066		12,801		3,431
Construction & land development		1,411		5,910		488		4,940		7,899		3,206
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		0		0		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	72,812	$	73,575	$	923	$	48,362	$	49,190	$	815
Nonowner-occupied		155,282		155,734		1,786		110,592		111,042		2,524
Other commercial		125,366		139,200		21,890		89,838		94,496		13,441
Residential real estate		34,616		37,628		1,659		34,813		37,205		3,431
Construction & land development		32,370		39,135		488		24,803		29,645		3,206
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		16		16		0		36		36		0

	Impaired Loans
	For the Three Months Ended
	September 30, 2017				September 30, 2016
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	58,980	$	376	$	38,199	$	531
Nonowner-occupied		108,959		312		71,154		321
Other commercial		57,317		306		45,028		1,221
Residential real estate		19,553		74		27,214		170
Construction & land development		23,846		552		28,730		46
Consumer:

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	Impaired Loans
	For the Three Months Ended
	September 30, 2017				September 30, 2016
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Bankcard		0		0		0		0
Other consumer		25		0		35		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	11,624	$	131	$	3,353	$	36
Nonowner-occupied		13,408		89		14,046		122
Other commercial		72,835		216		33,195		42
Residential real estate		15,225		16		8,579		52
Construction & land development		1,641		21		8,591		56
Consumer:
Bankcard		0		0		0		0
Other consumer		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	70,604	$	507	$	41,552	$	567
Nonowner-occupied		122,367		401		85,200		443
Other commercial		130,152		522		78,223		1,263
Residential real estate		34,778		90		35,793		222
Construction & land development		25,487		573		37,321		102
Consumer:
Bankcard		0		0		0		0
Other consumer		25		0		35		0

	Impaired Loans
	For the Nine Months Ended
	September 30, 2017				September 30, 2016
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	55,506	$	1,011	$	34,030	$	715
Nonowner-occupied		93,254		811		70,081		714
Other commercial		55,891		895		37,805		1,446
Residential real estate		19,634		206		26,737		406
Construction & land development		20,706		563		26,559		112
Consumer:
Bankcard		0		0		0		0
Other consumer		29		0		32		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	9,392	$	424	$	3,603	$	92
Nonowner-occupied		14,595		363		10,416		360
Other commercial		65,142		1,410		34,755		270
Residential real estate		15,186		89		9,129		77
Construction & land development		2,872		64		10,300		146
Consumer:
Bankcard		0		0		0		0
Other consumer		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	64,898	$	1,435	$	37,633	$	807
Nonowner-occupied		107,849		1,174		80,497		1,074
Other commercial		121,033		2,305		72,560		1,716
Residential real estate		34,820		295		35,866		483
Construction & land development		23,578		627		36,859		258
Consumer:
Bankcard		0		0		0		0
Other consumer		29		0		32		0

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At September 30, 2017 and December 31, 2016, other real estate owned (“OREO”) included in other assets in the Consolidated Balance Sheets was $26,826 and $31,510, 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 September 30, 2017 and December 31, 2016, the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process was $116 and $660, 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. 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

33

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 and nine months ended September 30, 2017, the re-estimation of the expected cash flows related to loans acquired that have evidence of deterioration of credit quality resulted in a reversal of provision for loan losses expense of $43 and $415, respectively, as compared to a reversal of provision for loan losses expense of $1,130 and provision for loan losses expense of $160, respectively, for the three and nine months ended September 30, 2016.

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 $804 and $1,044 at September 30, 2017 and December 31, 2016, 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

For the Three Months Ended September 30, 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	$	5,129	$	7,099		$	37,287	$	12,479		$	7,514	$	2,715	$	760		$	72,983
Charge-offs		518		0			4,854		299			54		632		0			6,357
Recoveries		397		168			156		60			89		151		0			1,021
Provision		230		(472	)		8,782		(1,385	)		452		281		(609	)		7,279
Ending balance	$	5,238	$	6,795		$	41,371	$	10,855		$	8,001	$	2,515	$	151		$	74,926

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Allowance for Loan Losses and Carrying Amount of Loans

For the Nine Months Ended September 30, 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		1,433			295		14,883		2,331			2,576			2,046		0			23,564
Recoveries		1,590			198		821		352			705			624		0			4,290
Provision		(192	)		9		22,346		(936	)		(734	)		1,132		(196	)		21,429
Ending balance	$	5,238		$	6,795	$	41,371	$	10,855		$	8,001		$	2,515	$	151		$	74,926
Ending Balance: individually evaluated for impairment	$	923		$	1,786	$	21,890	$	1,659		$	488		$	0	$	0		$	26,746
Ending Balance: collectively evaluated for impairment	$	4,315		$	5,009	$	19,481	$	9,196		$	7,513		$	2,515	$	151		$	48,180
Ending Balance: loans acquired with deteriorated credit quality	$	0		$	0	$	0	$	0		$	0		$	0	$	0		$	0
Financing receivables:
Ending balance	$	1,364,757		$	4,686,183	$	1,757,741	$	3,050,868		$	1,599,632		$	697,673	$	0		$	13,156,854
Ending Balance: individually evaluated for impairment	$	32,888		$	25,220	$	89,559	$	15,574		$	16,879		$	0	$	0		$	180,120
Ending Balance: collectively evaluated for impairment	$	1,297,668		$	4,537,792	$	1,636,037	$	3,021,173		$	1,558,653		$	697,657	$	0		$	12,748,980
Ending Balance: loans acquired with deteriorated credit quality	$	34,201		$	123,171	$	32,145	$	14,121		$	24,100		$	16	$	0		$	227,754

Allowance for Loan Losses and Carrying Amount of Loans

For the Year Ended December 31, 2016

	Commercial Real Estate				Other Commercial		Residential Real Estate		Construction			Consumer		Allowance for		Total
	Owner- occupied		Nonowner- occupied						& Land Development					Estimated Imprecision
Allowance for Loan Losses:
Beginning balance	$	3,637	$	5,309	$	31,328	$	15,148	$	18,205		$	1,995	$	104	$	75,726
Charge-offs		5,281		419		20,430		4,597		2,659			2,794		0		36,180
Recoveries		3,071		675		3,452		639		433			446		0		8,716
Provision		3,846		1,318		18,737		2,580		(5,373	)		3,158		243		24,509
Ending balance	$	5,273	$	6,883	$	33,087	$	13,770	$	10,606		$	2,805	$	347	$	72,771

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Allowance for Loan Losses and Carrying Amount of Loans

For the Year Ended December 31, 2016

	Commercial Real Estate				Other Commercial		Residential Real Estate		Construction		Consumer		Allowance for		Total
	Owner- occupied		Nonowner- occupied						& Land Development				Estimated Imprecision
Ending Balance: individually evaluated for impairment	$	815	$	2,524	$	13,441	$	3,431	$	3,206	$	0	$	0	$	23,417
Ending Balance: collectively evaluated for impairment	$	4,458	$	4,359	$	19,646	$	10,339	$	7,400	$	2,805	$	347	$	49,354
Ending Balance: loans acquired with deteriorated credit quality	$	0	$	0	$	0	$	0	$	0	$	0	$	0	$	0
Financing receivables:
Ending balance	$	1,049,885	$	3,425,453	$	1,613,437	$	2,403,437	$	1,255,738	$	608,769	$	0	$	10,356,719
Ending Balance: individually evaluated for impairment	$	18,976	$	26,835	$	56,091	$	14,766	$	8,152	$	0	$	0	$	124,820
Ending Balance: collectively evaluated for impairment	$	1,005,999	$	3,323,117	$	1,527,479	$	2,373,969	$	1,221,006	$	608,733	$	0	$	10,060,303
Ending Balance: loans acquired with deteriorated credit quality	$	24,910	$	75,501	$	29,867	$	14,702	$	26,580	$	36	$	0	$	171,596

7. INTANGIBLE ASSETS

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

	September 30, 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	$	98,358	($	52,062	)	$	0	($	0	)	$	98,358	($	52,062	)
Non-amortized intangible assets:
George Mason trade name	$	0				$	1,230				$	1,230
Goodwill not subject to amortization	$	1,466,152				$	21,455				$	1,487,607

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	December 31, 2016
	Community Banking					Total
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Core deposit intangible assets	$	69,635	($	46,681	)	$	69,635	($	46,681	)
Goodwill not subject to amortization	$	863,767				$	863,767

The following table provides a reconciliation of goodwill:

	Community Banking		Mortgage Banking		Total
Goodwill at December 31, 2016	$	863,767	$	0	$	863,767
Addition to goodwill from Bank of Georgetown acquisition		1,327		0		1,327
Preliminary addition to goodwill from Cardinal acquisition		601,058		21,455		622,513
Goodwill at September 30, 2017	$	1,466,152	$	21,455	$	1,487,607

United incurred amortization expense on intangible assets of $2,240 and $5,381 for the quarter and nine months ended September 30, 2017, respectively, and $1,122 and $2,786 for the quarter and nine months ended September 30, 2016, respectively.

The following table sets forth the anticipated amortization expense for intangible assets for the years subsequent to 2016:

Year	Amount
2017	$	7,772
2018		8,039
2019		7,015
2020		6,309
2021 and thereafter		22,542

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 $264,000. 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 September 30, 2017, federal funds purchased were $25,800 while total securities sold under agreements to repurchase (“REPOs”) were

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$316,236. Included in the $316,236 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 September 30, 2017, United had no outstanding balance under this line of credit.

9. LONG-TERM BORROWINGS    

United’s subsidiary banks are members 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 September 30, 2017, United had an unused borrowing amount of approximately $3,724,772 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 September 30, 2017, $1,272,115 of FHLB advances with a weighted-average interest rate of 1.43% are scheduled to mature within the next eight years. Overnight funds of $200,000 with an interest rate of 1.27% are included in the $1,272,115 above at September 30, 2017.

The scheduled maturities of these FHLB borrowings are as follows:

Year	Amount
2017	$	815,000
2018		131,776
2019		187,809
2020		42,247
2021 and thereafter		95,283
Total	$	1,272,115

At September 30, 2017, United had a total of fifteen 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 September 30, 2017 and December 31, 2016, the outstanding balance of the Debentures was $242,131 and $224,319, 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

38

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.

However, with the acquisition of Cardinal on April 21, 2017, United’s total consolidated assets now exceeds $15 billion. As a result, United’s Trust Preferred Securities are no longer included in United’s Tier 1 capital but are included as a component of Tier 2 capital on a permanent basis without phase-out. This new requirement was reflected in United’s regulatory capital amounts for June 30, 2017, the first reporting period after the Cardinal acquisition.

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 $4,118,868 and $2,823,396 of loan commitments outstanding as of September 30, 2017 and December 31, 2016, respectively, approximately half of which expire within one year. Included in the September 30, 2017 amount are commitments to extend credit of $407,610 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 September 30, 2017, United had no outstanding commercial letters of credit and $9 as of December 31, 2016. A standby letter of credit is generally contingent upon the failure of a customer to perform according to the terms of an underlying contract with a third party. United has issued standby letters of credit of $148,742 and $121,584 as of September 30, 2017 and December 31, 2016, 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.

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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 $575 as of September 30, 2017.

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 manage adverse prices 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. 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.

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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.

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 September 30, 2017 and December 31, 2016.

	Asset Derivatives
	September 30, 2017						December 31, 2016
	Balance Sheet Location		Notional Amount		Fair Value		Balance Sheet Location		Fair Value
Derivatives designated as hedging instruments Fair Value Hedges:
Interest rate swap contracts (hedging commercial loans)		Other assets	$	14,762	$	40		Other assets	$	24
Total derivatives designated as hedging instruments			$	14,762	$	40			$	24
Derivatives not designated as hedging instruments
Interest rate swap contracts		Other assets	$	0	$	0		Other assets	$	2,267
TBA mortgage-backed securities		Other assets		322,500		501		Other assets		0
Interest rate lock commitments		Other assets		169,588		7,027		Other assets		0
Total derivatives not designated as hedging instruments			$	492,088	$	7,528			$	2,267
Total asset derivatives			$	506,850	$	7,568			$	2,291

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	Liability Derivatives
	September 30, 2017						December 31, 2016
	Balance Sheet Location		Notional Amount		Fair Value		Balance Sheet Location		Fair Value
Derivatives designated as hedging instruments Fair Value Hedges:
Interest rate swap contracts (hedging commercial loans)		Other liabilities	$	76,869	$	480		Other liabilities	$	338
Total derivatives designated as hedging instruments			$	76,869	$	480			$	338
Derivatives not designated as hedging instruments
Interest rate swap contracts		Other liabilities	$	0	$	0		Other liabilities	$	2,267
Forward loan sales commitments		Other liabilities		50,063		257		Other liabilities		0
Interest rate lock commitments		Other liabilities		65,862		291		Other liabilities		0
Total derivatives not designated as hedging instruments			$	115,925	$	548			$	2,267
Total liability derivatives			$	192,794	$	1,028			$	2,605

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 and nine months ended September 30, 2017 and 2016 are presented as follows:

				Three Months Ended
	Income Statement Location			September 30, 2017			September 30, 2016
Derivatives in hedging relationships Fair Value Hedges:
Interest rate swap contracts		Interest income/(expense	)	$	(208	)	$	(385	)
Total derivatives in hedging relationships				$	(208	)	$	(385	)
Derivatives not designated as hedging instruments
Forward loan sales commitments		Income from Mortgage Banking Activities			(257	)		0
TBA mortgage-backed securities		Income from Mortgage Banking Activities			123			0
Interest rate lock commitments		Income from Mortgage Banking Activities			(4,484	)		0
Total derivatives not designated as hedging instruments				$	(4,618	)	$	0
Total derivatives				$	(4,826	)	$	(385	)

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				Nine Months Ended
	Income Statement Location			September 30, 2017			September 30, 2016
Derivatives in fair value hedging relationships Fair Value Hedges:
Interest rate swap contracts		Interest income/(expense	)	$	(648	)	$	353
Cash Flow Hedges:
Forward loan sales commitments		Other income			0			0
Total derivatives in hedging relationships				$	(648	)	$	353
Derivatives not designated as hedging instruments
Forward loan sales commitments		Income from Mortgage Banking Activities			(427	)		0
TBA mortgage-backed securities		Income from Mortgage Banking Activities			2,907			0
Interest rate lock commitments		Income from Mortgage Banking Activities			(3,465	)		0
Total derivatives not designated as hedging instruments				$	(985	)	$	0
Total derivatives				$	(1,633	)	$	353

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

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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.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

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: Securities available for sale 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 September 30, 2017, 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 September 30, 2017. 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

44

spread, priority of claims, principal and interest. Discount margins used in the valuation at September 30, 2017 ranged from LIBOR plus 3.25% to LIBOR plus 6.00%. Management completed a sensitivity analysis on the fair value of its Trup Cdos. Given a comprehensive 200 basis point increase in the discount rates, the total fair value of these securities would decline by approximately 18%, or $5,741.

Loans held for sale: For residential mortgage loans sold in the mortgage banking segment, the loans closed 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 0.27% to 0.40% 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

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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 0.27% to 0.40% 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 September 30, 2017 and December 31, 2016, segregated by the level of the valuation inputs within the fair value hierarchy.

			Fair Value at September 30, 2017 Using
Description	Balance as of September 30, 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	$	115,866	$	0	$	115,866	$	0
State and political subdivisions		305,141		0		305,141		0
Residential mortgage-backed securities
Agency		714,700		0		714,700		0
Non-agency		5,846		0		5,846		0
Commercial mortgage-backed securities
Agency		420,792		0		420,792		0
Asset-backed securities		13,429		0		13,429		0
Trust preferred collateralized debt obligations		31,659		0		0		31,659
Single issue trust preferred securities		12,467		0		12,467		0
Other corporate securities		19,254		0		19,254		0
Total available for sale debt securities		1,639,154		0		1,607,495		31,659
Available for sale equity securities:
Financial services industry		3,016		401		2,615		0
Equity mutual funds (1)		6,250		6,250		0		0
Other equity securities		1,214		1,214		0		0
Total available for sale equity securities		10,480		7,865		2,615		0
Total available for sale securities		1,649,634		7,865		1,610,110		31,659
Loans held for sale		311,186		0		0		311,186
Derivative financial assets:
Interest rate swap contracts		40		0		40		0
Interest rate lock commitments		7,027		0		0		7,027
TBA mortgage-backed securities		501		501		0		0
Total derivative financial assets		7,568		501		40		7,027
Liabilities

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			Fair Value at September 30, 2017 Using
Description	Balance as of September 30, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Derivative financial liabilities:
Interest rate swap contracts		480		0		480		0
Forward sales commitments		257		0		257		0
Interest rate lock commitments		291		0		291		0
Total derivative financial liabilities		1,028		0		1,028		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, 2016 Using
Description	Balance as of December 31, 2016		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	$	95,786	$	0	$	95,786	$	0
State and political subdivisions		192,812		0		192,812		0
Residential mortgage-backed securities
Agency		584,096		0		584,096		0
Non-agency		7,043		0		7,043		0
Asset-backed securities		217		0		217		0
Commercial mortgage-backed securities
Agency		305,341		0		305,341		0
Trust preferred collateralized debt obligations		33,552		0		0		33,552
Single issue trust preferred securities		11,477		0		11,477		0
Other corporate securities		15,062		0		15,062		0
Total available for sale debt securities		1,245,386		0		1,211,834		33,552
Available for sale equity securities:
Financial services industry		10,735		1,372		9,363		0
Equity mutual funds (1)		1,820		1,820		0		0
Other equity securities		1,273		1,273		0		0
Total available for sale equity securities		13,828		4,465		9,363		0
Total available for sale securities		1,259,214		4,465		1,221,197		33,552
Derivative financial assets:
Interest rate swap contracts		2,291		0		2,291		0
Liabilities
Derivative financial liabilities:
Interest rate swap contracts		2,605		0		2,605		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.

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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 nine months ended September 30, 2017 and the year ended December 31, 2016.

The following table presents additional information about financial assets and liabilities measured at fair value at September 30, 2017 and December 31, 2016 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
	September 30, 2017			December 31, 2016
Balance, beginning of period	$	33,552		$	34,686
Total gains or losses (realized/unrealized):
Included in earnings (or changes in net assets)		9			0
Included in other comprehensive income		6,148			(1,134	)
Sales		(8,050	)		0
Balance, end of period	$	31,659		$	33,552
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
	September 30, 2017			December 31, 2016
Balance, beginning of period	$	0		$	0
Acquired in Cardinal merger		271,301			0
Originations		1,644,943			0
Sales		(1,639,737	)		0
Total gains or losses during the period recognized in earnings		41,929			0
Transfers in and/or out of Level 3		(7,250	)		0
Balance, end of period	$	311,186		$	0
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
	September 30, 2017			December 31, 2016
Balance, beginning of period	$	0		$	0
Acquired in Cardinal merger		10,393			0
Transfers other		(3,366	)		0
Balance, end of period	$	7,027		$	0
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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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 September 30, 2017			Nine Months  Ended September 30, 2017
Assets
Loans held for sale
Income from mortgage banking activities	$	(5,090	)	$	(7,529	)

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:

	September 30, 2017						December 31, 2016
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	$	303,953	$	311,186	$	7,233	$	0	$	0	$	0

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 nine months ended September 30, 2017. 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

49

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. Other than those intangible assets recorded in the acquisitions of Cardinal in the second quarter of 2017 and Bank of Georgetown in the second quarter of 2016, no other fair value measurement of intangible assets was made during the first nine months of 2017 and 2016.

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

			Carrying value at September 30, 2017
Description	Balance as of September 30, 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
Impaired Loans	$	105,900	$	0	$	74,852	$	31,048	$	9,045
OREO		26,826		0		26,743		83		2,904
			Carrying value at December 31, 2016
Description	Balance as of December 31, 2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		YTD Losses
Assets
Impaired Loans	$	80,505	$	0	$	27,609	$	52,896	$	5,119
OREO		31,510		0		31,510		0		2,086

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: The fair values of certain mortgage loans (e.g., one-to-four family residential), credit card loans, and other consumer loans are 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) are estimated using discounted cash flow analyses, using market interest rates currently being offered for loans with similar terms to borrowers of similar creditworthiness, which include adjustments for liquidity concerns. For acquired impaired loans, fair value is assumed to equal United’s carrying value, which represents 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 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)
September 30, 2017
Cash and cash equivalents	$	1,747,037	$	1,747,037	$	0	$	1,747,037	$	0
Securities available for sale		1,649,634		1,649,634		7,865		1,610,110		31,659
Securities held to maturity		20,335		19,909		0		16,889		3,020
Other securities		166,756		158,418		0		0		158,418
Loans held for sale		315,031		315,031		0		3,845		311,186
Loans		13,065,542		12,550,352		0		0		12,550,352
Derivative financial assets		7,568		7,568		501		40		7,027
Deposits		13,875,297		13,859,205		0		13,859,205		0
Short-term borrowings		492,036		492,036		0		492,036		0
Long-term borrowings		1,364,246		1,328,753		0		1,328,753		0
Derivative financial liabilities		1,028		1,028		0		1,028		0
December 31, 2016
Cash and cash equivalents	$	1,434,527	$	1,434,527	$	0	$	1,434,527	$	0
Securities available for sale		1,259,214		1,259,214		4,465		1,221,197		33,552
Securities held to maturity		33,258		31,178		0		28,158		3,020
Other securities		111,166		105,608		0		0		105,608
Loans held for sale		8,445		8,445		0		8,445		0
Loans		10,268,366		10,122,486		0		0		10,122,486
Derivative financial assets		2,291		2,291		0		2,291		0
Deposits		10,796,867		10,785,294		0		10,785,294		0
Short-term borrowings		209,551		209,551		0		209,551		0
Long-term borrowings		1,172,026		1,142,782		0		1,142,782		0
Derivative financial liabilities		2,605		2,605		0		2,605		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 and replaced the 2011 Long-Term Incentive Plan (2011 LTI Plan) which expired during the second quarter of 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

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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 nine months of 2017, a total of 253,417 non-qualified stock options and 89,475 shares of restricted stock were granted under the 2016 LTI Plan.

Compensation expense of $909 and $2,589 related to the nonvested awards under United’s Long-Term Incentive Plans was incurred for the third quarter and first nine months of 2017, respectively, as compared to the compensation expense of $720 and $2,050 related to the nonvested awards under United’s Long-Term Incentive Plans incurred for the third quarter and first nine months of 2016, 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 September 30, 2017, and the changes during the first nine months of 2017 are presented below:

	Nine Months Ended September 30, 2017
						Weighted Average
	Shares			Aggregate Intrinsic Value		Remaining Contractual Term (Yrs.)		Exercise Price
Outstanding at January 1, 2017		1,411,735						$	28.05
Assumed in Cardinal merger		153,602							21.47
Granted		253,417							45.27
Exercised		(163,562	)						20.93
Forfeited or expired		(2,962	)						38.81
Outstanding at September 30, 2017		1,652,230		$	12,602		5.8	$	30.76
Exercisable at September 30, 2017		1,138,309		$	11,964		4.5	$	26.64

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The following table summarizes the status of United’s nonvested stock option awards during the first nine months of 2017:

	Shares			Weighted-Average Grant Date Fair Value Per Share
Nonvested at January 1, 2017		430,278		$	6.84
Granted		253,417			8.85
Vested		(168,274	)		6.64
Forfeited or expired		(1,500	)		8.85
Nonvested at September 30, 2017		513,921		$	7.89

During the nine months ended September 30, 2017 and 2016, 163,562 and 248,677 shares, respectively, were issued in connection with stock option exercises. All shares issued in connection with stock option exercises for the nine months ended September 30, 2017 and 2016 were issued from authorized and unissued stock. The total intrinsic value of options exercised under the Plans during the nine months ended September 30, 2017 and 2016 was $3,078 and $4,670 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 September 30, 2017:

	Number of Shares			Weighted-Average Grant Date Fair Value Per Share
Outstanding at January 1, 2017		137,268		$	33.61
Granted		89,475			45.27
Vested		(53,950	)		32.23
Forfeited		(420	)		45.30
Outstanding at September 30, 2017		172,373		$	40.07

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 third quarter of 2017, United made a discretionary contribution of $10,000 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.

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As of December 31, 2016, United changed the method used to estimate the interest cost component of net periodic benefit cost for the Plan. Under the previous method, appropriate spot rates were used to discount the projected benefit obligation (PBO) cash flows based on date of measurement. Then, a single aggregated discount rate was calculated such that the present value of the PBO remained the same. This rate is technically a weighted-average of the spot rates. This single discount rate was applied to the interest and service costs as well. Under the full yield curve approach, separate discount rates are used to calculate the present value for each projected cash flow. This does not have any impact on the present value of the PBO as the PBO was originally discounted with spot rates. The adoption of this method concerns the manner in which it affects interest and service costs. This new method constitutes a change in an accounting estimate under the provisions of ASC topic 250, “Accounting Changes and Error Corrections,” that is inseparable from a change in accounting principle and was accounted for prospectively, with the resulting change impacting the recognition of net periodic pension cost beginning January 1, 2017. The impact of this accounting change on United’s net periodic pension cost for the third quarter and first nine months of 2017 was a decline of $252 and $748, respectively, in expense from the amount that would have been recorded under the previous method.

Included in accumulated other comprehensive income at December 31, 2016 are unrecognized actuarial losses of $53,991 ($34,014 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, 2017 is $4,411 ($2,779 net of tax).

Net periodic pension cost for the three and nine months ended September 30, 2017 and 2016 included the following components:

	Three Months Ended September 30						Nine Months Ended September 30
	2017			2016			2017			2016
Service cost	$	574		$	614		$	1,705		$	1,829
Interest cost		1,293			1,471			3,837			4,383
Expected return on plan assets		(2,072	)		(2,034	)		(6,148	)		(6,058	)
Recognized net actuarial loss		1,111			1,161			3,298			3,458
Net periodic pension (benefit) cost	$	906		$	1,212		$	2,692		$	3,612
Weighted-Average Assumptions:
Discount rate		4.49	%		4.75	%		4.49	%		4.75	%
Expected return on assets		7.00	%		7.25	%		7.00	%		7.25	%
Rate of compensation increase (prior to age 45)		3.50	%		3.50	%		3.50	%		3.50	%
Rate of compensation increase		3.00	%		3.00	%		3.00	%		3.00	%

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 September 30, 2017, United has provided a liability for $2,405 of unrecognized tax benefits related to various federal and state income tax matters. The entire amount of unrecognized tax benefits, if recognized, would impact United’s effective tax rate. Over the next 12 months, the statute of limitations will close on certain income tax periods. However, at this time, United cannot reasonably estimate the amount of tax benefits it may recognize over the next 12 months.

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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.

As of September 30, 2017 and 2016, the total amount of accrued interest related to uncertain tax positions was $548 and $792, respectively. United accounts for interest and penalties related to uncertain tax positions as part of its provision for federal and state income taxes.

16. COMPREHENSIVE INCOME

The components of total comprehensive income for the three and nine months ended September 30, 2017 and 2016 are as follows:

	Three Months Ended September 30						Nine Months Ended September 30
	2017			2016			2017			2016
Net Income	$	56,738		$	41,479		$	132,606		$	107,977
Available for sale (“AFS”) securities:
AFS securities with OTTI charges during the period		0			0			(60	)		(77	)
Related income tax effect		0			0			22			28
Less: OTTI charges recognized in net income		0			0			60			33
Related income tax benefit		0			0			(22	)		(12	)
Reclassification of previous noncredit OTTI to credit OTTI		0			0			0			415
Related income tax benefit		0			0			0			(150	)
Net unrealized (losses) gains on AFS securities with OTTI		0			0			0			237
AFS securities – all other:
Change in net unrealized gain on AFS securities arising during the period		3,584			(7,599	)		14,846			12,356
Related income tax effect		(1,326	)		2,735			(5,493	)		(4,489	)
Net reclassification adjustment for (gains) losses included in net income		(467	)		(1	)		(1,444	)		(251	)
Related income tax expense (benefit)		173			0			534			91
		1,964			(4,865	)		8,443			7,707
Net effect of AFS securities on other comprehensive income		1,964			(4,865	)		8,443			7,944
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			6			6
Related income tax expense		(0	)		(0	)		(2	)		(2	)
Net effect of HTM securities on other comprehensive income		2			2			4			4
Pension plan:
Recognized net actuarial loss		1,111			1,161			3,298			3,458
Related income tax benefit		(394	)		(384	)		(1,191	)		(1,223	)
Net effect of change in pension plan asset on other comprehensive income		717			777			2,107			2,235
Total change in other comprehensive income		2,683			(4,086	)		10,554			10,183
Total Comprehensive Income	$	59,421		$	37,393		$	143,160		$	118,160

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The components of accumulated other comprehensive income for the nine months ended September 30, 2017 are as follows:

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

For the Nine Months Ended September 30, 2017

	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, 2017	($	10,297	)	($	51	)	($	34,369	)	($	44,717	)
Other comprehensive income before reclassification		9,353			4			0			9,357
Amounts reclassified from accumulated other comprehensive income		(910	)		0			2,107			1,197
Net current-period other comprehensive income, net of tax		8,443			4			2,107			10,554
Balance at September 30, 2017	($	1,854	)	($	47	)	($	32,262	)	($	34,163	)

Reclassifications out of Accumulated Other Comprehensive Income (AOCI)

For the Nine Months Ended September 30, 2017

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		Total other-than-temporary impairment losses
Net reclassification adjustment for losses (gains) included in net income		(1,444	)	Net gains on sales/calls of investment securities
		(1,444	)	Total before tax
Related income tax effect		534		Tax expense
		(910	)	Net of tax
Pension plan:
Recognized net actuarial loss		3,298	(a)
		3,298		Total before tax
Related income tax effect		(1,191	)	Tax expense
		2,107		Net of tax
Total reclassifications for the period	$	1,197

(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				Nine Months Ended
	September 30				September 30
	2017		2016		2017		2016
Distributed earnings allocated to common stock	$	34,587	$	25,174	$	95,871	$	73,242
Undistributed earnings allocated to common stock		22,065		16,234		36,518		34,545
Net earnings allocated to common shareholders	$	56,652	$	41,408	$	132,389	$	107,787
Average common shares outstanding		104,760,153		76,218,573		95,040,664		72,413,246
Equivalents from stock options		307,969		429,200		409,962		333,117
Average diluted shares outstanding		105,068,122		76,647,773		95,450,626		72,746,363
Earnings per basic common share	$	0.54	$	0.54	$	1.39	$	1.49
Earnings per diluted common share	$	0.54	$	0.54	$	1.39	$	1.48

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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 fifteen 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
Century Trust	March 23, 2000	$	8,800	10.875% Fixed	March 8, 2030
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 subsidiaries, 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 September 30, 2017						As of December 31, 2016
	Aggregate Assets		Aggregate Liabilities		Risk Of Loss (1)		Aggregate Assets		Aggregate Liabilities		Risk Of Loss (1)
Trust preferred securities	$	266,560	$	257,605	$	8,955	$	240,668	$	232,583	$	8,085

(1) Represents investment in VIEs.

19. SEGMENT INFORMATION

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.

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 and nine months ended September 30, 2017 and 2016 is as follows:

	At and For the Three Months Ended September 30, 2017
	Community Banking		Mortgage Banking			Other			Consolidated
Net interest income	$	152,886	$	(36	)	$	(2,574	)	$	150,276
Provision for loans losses		7,279		0			0			7,279
Other income		18,373		19,936			(80	)		38,229
Other expense		74,553		24,036			(1,937	)		96,652
Income taxes		29,490		(1,332	)		(322	)		27,836
Net income (loss)	$	59,937	$	(2,804	)	$	(395	)	$	56,738
Total assets (liabilities)	$	18,780,395	$	350,483		$	(900	)	$	19,129,978
Average assets (liabilities)		18,620,035		321,744			(13,994	)		18,927,785

	At and For the Three Months Ended September 30,  2016
	Community Banking		Other			Consolidated
Net interest income	$	113,033	$	(1,964	)	$	111,069
Provision for loans losses		6,988		0			6,988
Other income		19,666		(645	)		19,021
Other expense		63,009		(232	)		62,777
Income taxes		19,729		(883	)		18,846
Net income (loss)	$	42,973	$	(1,494	)	$	41,479
Total assets (liabilities)	$	14,364,797	$	(20,101	)	$	14,344,696
Average assets (liabilities)		14,182,202		(22,633	)		14,159,569

	At and For the Nine Months Ended September 30, 2017
	Community Banking		Mortgage Banking			Other			Consolidated
Net interest income	$	401,044	$	54		$	(6,957	)	$	394,141
Provision for loans losses		21,429		0			0			21,429
Other income		53,409		42,329			3,143			98,881
Other expense		215,935		42,744			12,952			271,631
Income taxes		73,214		(39	)		(5,819	)		67,356
Net income (loss)	$	143,875	$	(322	)	$	(10,947	)	$	132,606
Total assets (liabilities)	$	18,780,395	$	350,483		$	(900	)	$	19,129,978
Average assets (liabilities)		17,020,928		187,118			(20,402	)		17,187,644

	At and For the Nine Months Ended September 30,  2016
	Community Banking		Other			Consolidated
Net interest income	$	317,835	$	(5,757	)	$	312,078
Provision for loans losses		18,690		0			18,690
Other income		55,323		(1,943	)		53,380
Other expense		186,322		(634	)		185,688
Income taxes		55,580		(2,477	)		53,103
Net income (loss)	$	112,566	$	(4,589	)	$	107,977
Total assets (liabilities)	$	14,364,797	$	(20,101	)	$	14,344,696
Average assets (liabilities)		13,125,973		(21,575	)		13,104,398

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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 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.

In addition, after the close of business on June 3, 2016, United acquired 100% of the outstanding common stock of Bank of Georgetown, a privately held community bank headquartered in Washington, D.C. The acquisition of Bank of Georgetown enhances United’s existing footprint in the Washington, D.C. MSA. The merger was accounted for under the acquisition method of accounting. At consummation, Bank of Georgetown had assets of approximately $1.28 billion, loans of $999.77 million, and deposits of $971.37 million.

Both the results of operations of Cardinal and Bank of Georgetown are included in the consolidated results of operations from their respective dates of acquisition. As a result of the Cardinal acquisition, the third quarter and first nine months of 2017 were impacted by increased levels of average balances, income, and expense as compared to the third quarter and first nine months of 2016 which were impacted by increased levels of average balances, income, and expense due to the Bank of Georgetown acquisition. In addition, the third quarter and first nine months of 2017 included $532 thousand and $24.99 million, respectively, of merger-related expenses from the Cardinal acquisition and the third quarter and first nine months of 2016 included $924 thousand and $5.61 million, respectively, of merger-related expenses to the Bank of Georgetown 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

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of United Bankshares, Inc. and its wholly-owned subsidiaries, unless otherwise indicated. Management has evaluated all significant events and transactions that occurred after September 30, 2017, 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 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

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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 September 30, 2017, the allowance for loan losses was $74.9 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 $7.5 million in additional allowance (funded by additional provision for credit losses), which would have negatively impacted the third quarter of 2017 net income by approximately $4.9 million, after-tax or $0.05 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 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

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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.

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,

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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 September 30, 2017, approximately 10.98% of total assets, or $2.10 billion, consisted of financial instruments recorded at fair value. Of this total, approximately 81.87% or $1.72 billion of these financial instruments used valuation methodologies involving observable market data, collectively Level 1 and Level 2 measurements, to determine fair value. Approximately $381.00 million or 18.13% 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 September 30, 2017, only $1.03 million 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.

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 September 30, 2017 were $19.13 billion which was an increase of $4.62 billion or 31.85% from December 31, 2016, primarily the result of the acquisition of Cardinal on April 21, 2017. Portfolio loans increased $2.80 billion or 27.07%, cash and cash equivalents increased $312.51 million or 21.78%, investment securities increased $433.09 million or 30.85%, goodwill increased $623.84 million or 72.22%, other assets increased $107.28 million or 25.86%, bank premises and equipment increased $28.40 million or 37.42% and interest receivable increased $12.21 million or 30.98% due primarily to the Cardinal merger. Total liabilities increased $3.59 billion or

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29.28% from year-end 2016. This increase in total liabilities was due mainly to an increase of $3.08 billion or 28.51% and $474.71 million or 34.36% in deposits and borrowings, respectively, mainly due to the Cardinal acquisition. Shareholders’ equity increased $1.03 billion or 45.98% from year-end 2016 due primarily to the acquisition of Cardinal.

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

Cash and Cash Equivalents

Cash and cash equivalents at September 30, 2017 increased $312.51 million or 21.78% from year-end 2016. Of this total increase, interest-bearing deposits with other banks increased $275.22 million or 21.87% as United placed more cash in an interest-bearing account with the Federal Reserve while cash and due from banks increased $37.22 million or 21.21% and fed funds increased $62 thousand or 8.55%. During the first nine months of 2017, net cash of $125.15 million and $384.45 million was provided by operating activities and investing activities, respectively, while $197.09 million was used in financing activities. 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 nine months of 2017 and 2016.

Securities

Total investment securities at September 30, 2017 increased $433.09 million or 30.85% from year-end 2016. Cardinal added $395.83million in investment securities, including purchase accounting amounts, upon consummation of the acquisition. Securities available for sale increased $390.42 million or 31.01%. This change in securities available for sale reflects $378.05 million acquired from Cardinal, $630.12 million in sales, maturities and calls of securities, $630.06 million in purchases, and an increase of $13.40 million in market value. Securities held to maturity decreased $12.92 million or 38.86% from year-end 2016 due to calls and maturities of securities. Other investment securities increased $55.59 million or 50.01% from year-end 2016. Cardinal added $14.27 million in other investment securities. Otherwise, Federal Reserve Bank (FRB) stock increased $33.28 million and FHLB stock increased $7.30 million.

The following table summarizes the changes in the available for sale securities since year-end 2016:

	September 30		December 31
(Dollars in thousands)	2017		2016		$ Change			% Change
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	115,866	$	95,786	$	20,080			20.96	%
State and political subdivisions		305,141		192,812		112,329			58.26	%
Mortgage-backed securities		1,141,338		896,480		244,858			27.31	%
Asset-backed securities		13,429		217		13,212			6,088.48	%
Marketable equity securities		10,480		13,828		(3,348	)		(24.21	%)
Trust preferred collateralized debt obligations		31,659		33,552		(1,893	)		(5.64	%)
Single issue trust preferred securities		12,467		11,477		990			8.63	%
Corporate securities		19,254		15,062		4,192			27.83	%
Total available for sale securities, at fair value	$	1,649,634	$	1,259,214	$	390,420			31.01	%

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The following table summarizes the changes in the held to maturity securities since year-end 2016:

(Dollars in thousands)	September 30 2017		December 31 2016		$ Change			% Change
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	5,215	$	5,295	$	(80	)		(1.51	%)
State and political subdivisions		5,674		8,598		(2,924	)		(34.01	%)
Mortgage-backed securities		26		30		(4	)		(13.33	%)
Single issue trust preferred securities		9,400		19,315		(9,915	)		(51.33	%)
Other corporate securities		20		20		0			0.00	%
Total held to maturity securities, at amortized cost	$	20,335	$	33,258	$	(12,923	)		(38.86	%)

At September 30, 2017, gross unrealized losses on available for sale securities were $16.47 million. Securities in an unrealized loss position at September 30, 2017 consisted primarily of Trup Cdos, single issue trust preferred securities and agency residential mortgage-backed securities. The Trup Cdos and the single issue trust preferred securities relate mainly to securities of financial institutions. The agency residential mortgage-backed securities relate to residential properties and provide a guaranty of full and timely payments of principal and interest by the issuing agency.

As of September 30, 2017, United’s mortgage-backed securities had an amortized cost of $1.14 billion, with an estimated fair value of $1.14 billion. The portfolio consisted primarily of $715.03 million in agency residential mortgage-backed securities with a fair value of $714.73 million, $5.26 million in non-agency residential mortgage-backed securities with an estimated fair value of $5.85 million, and $420.12 million in commercial agency mortgage-backed securities with an estimated fair value of $420.79 million.

As of September 30, 2017, United’s corporate securities had an amortized cost of $103.38 million, with an estimated fair value of $95.87 million. The portfolio consisted primarily of $38.19 million in Trup Cdos with a fair value of $31.66 million and $22.80 million in single issue trust preferred securities with an estimated fair value of $21.03 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 $13.42 million and a fair value of $13.43 million and marketable equity securities, with an amortized cost of $9.95 million and a fair value of $10.48 million, only one of which was individually significant.

The Trup Cdos consisted of pools of trust preferred securities issued by trusts related primarily to financial institutions and to a lesser extent, insurance companies. The Company has no exposure to Real Estate Investment Trusts (REITs) in its investment portfolio. The Company owns both senior and mezzanine tranches in the Trup Cdos; however, the Company does not own any income notes. The senior and mezzanine tranches of Trup Cdos generally have some protection from defaults in the form of over-collateralization and excess spread revenues, along with waterfall structures that redirect cash flows in the event certain coverage test requirements have failed. Generally, senior tranches have the greatest protection, with mezzanine tranches subordinated to the senior tranches, and income notes subordinated to the mezzanine tranches. The fair value of senior tranches represents $5.29 million of the Company’s pooled securities, while mezzanine tranches represent $26.37 million. Of the $26.37 million in mezzanine tranches, $5.52 million are now in the Senior position as the Senior notes have been paid to a zero balance. As of September 30, 2017, Trup Cdos with a fair value of $3.17 million were investment grade, and the remaining $28.49 million were below investment grade. In terms of capital adequacy, the Company allocates additional risk-based capital to the below investment grade securities. As of September 30, 2017, United’s single issue trust preferred securities had a fair value of $21.00 million. Of the $21.03 million, $4.12 million or 19.60% were investment grade; $9.42 million or 44.85% were split rated; $3.10 million or 14.77% were below investment grade; and $4.36 million or 20.78% were unrated. The two largest exposures accounted for 53.50% of the $21.03 million. These included SunTrust Bank at $6.87 million and Emigrant Bank at $4.36 million. All single-issue trust preferred securities are currently receiving full scheduled principal and interest payments.

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The following two tables provide a summary of Trup Cdos as of September 30, 2017:

Description (1)	Tranche		Class		Moodys		S&P		Fitch		Amortized Cost Basis		Fair Value		Unrealized Loss (Gain)			Cumulative Credit- Related OTTI
											Dollars in thousands
SECURITY 1		Senior		Sr		Ca		NR		WD		$1,798		$2,115	$	(317	)	$	1,219
SECURITY 2		Senior (org Mezz)		B		Ca		NR		WD		6,429		5,519		910			7,398
SECURITY 5		Mezzanine		C-2		Caa1		NR		C		1,978		1,300		678			184
SECURITY 6		Mezzanine		C-1		Ca		NR		C		1,916		1,636		280			1,316
SECURITY 7		Mezzanine		B-1		Caa1		NR		C		4,493		3,601		892			41
SECURITY 8		Mezzanine		B-1		Ca		NR		C		3,676		3,122		554			1,651
SECURITY 14		Mezzanine		B-1		Ba2		NR		CCC		3,300		2,625		675			422
SECURITY 15		Mezzanine		B		Caa3		NR		C		6,436		5,000		1,436			3,531
SECURITY 17		Mezzanine		B-1		Caa1		NR		C		2,250		1,920		330			750
SECURITY 18		Senior		A-3		Aaa		NR		AA		3,410		3,171		239			0
SECURITY 22		Mezzanine		B-1		B1		NR		CCC		2,500		1,650		850			0
											$	38,186	$	31,659	$	6,527		$	16,512

(1) Securities that are no longer owned by the Company have been removed from the tables.

Desc.	# of Issuers Currently Performing (1)		Deferrals as % of Original Collateral	Defaults as a % of Original Collateral			Expected Deferrals and Defaults as a % of Remaining Performing Collateral (2)			Projected Recovery/ Cure Rates on Deferring Collateral	Excess Subordination as % of Performing Collateral			Amortized Cost as a % of Par Value	Discount as a % of Par Value (3)
1		5	6.3%		13.3	%		7.9	%	25 - 90%		(73.5	)%	57.0%		43.0	%
2		7	0.0%		11.1	%		5.0	%	N/A		(104.7	)%	45.4%		54.6	%
5		39	0.0%		9.8	%		5.7	%	N/A		0.2	%	91.3%		8.7	%
6		39	0.0%		15.9	%		5.6	%	N/A		(21.9	)%	58.5%		41.5	%
7		18	0.0%		12.0	%		5.4	%	N/A		(7.8	)%	84.8%		15.2	%
8		22	0.0%		22.4	%		5.2	%	N/A		(28.5	)%	68.3%		31.7	%
14		37	3.1%		7.1	%		6.0	%	0 - 90%		10.5	%	88.0%		12.0	%
15		18	0.8%		13.2	%		6.7	%	90%		(33.1	)%	64.4%		35.6	%
17		26	0.0%		7.4	%		6.1	%	N/A		(1.6	)%	75.0%		25.0	%
18		28	1.0%		15.2	%		5.4	%	15%		76.2	%	100.0%		0.0	%
22		28	1.5%		4.8	%		5.5	%	50%		6.6	%	100.0%		0.0	%

(1) “Performing” refers to all outstanding issuers less issuers that have either defaulted or are currently deferring their interest payment.

(2) “Expected Deferrals and Defaults” refers to projected future defaults on performing collateral and does not include the projected defaults on deferring collateral.

(3) The “Discount” in the table above represents the Par Value less the Amortized Cost. This metric generally approximates the level of OTTI that has been incurred on these securities.

The Company defines “Excess Subordination” as all outstanding collateral less the sum of (i) 100% of the defaulted collateral, (ii) the sum of the projected net loss amounts for each piece of the deferring but not defaulted collateral and (iii) the amount of each Trup Cdo’s debt that is either senior to or pari passu with our security’s priority level.

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The calculation of excess subordination in the above table does not consider the OTTI the Company has recognized on these securities. While the ratio of excess subordination provides some insight on overall collateralization levels, the Company completes an expected cash flow analysis each quarter to determine whether an adverse change in future cash flows has occurred under ASC 320. The standard specifies that a cash flow projection can be present-valued at the security specific effective interest rate and the resulting present value compared to the amortized cost in order to quantify the credit component of impairment. The Company utilizes the cash flow models to determine the net realizable value and assess whether additional OTTI has occurred.

While the ratio of excess subordination provides some insight on overall collateralization levels, the Company does not utilize this ratio to calculate OTTI. The ratio of excess subordination represents only one component of the projected cash flow. The Company believes the excess subordination is limited as it does not consider the following:

• Waterfall structure and redirection of cash flows

• Excess interest spread

• Cash reserves

The collateral backing of a particular tranche can be increased by decreasing the more senior liabilities of the Trup Cdo tranche. This occurs when collateral deterioration due to defaults and deferrals triggers alternative waterfall provisions of the cash flow. The waterfall structure of the bond requires the excess spread to be rerouted away from the most junior classes of debt (which includes the income notes) in order to pay down the principal of the most senior liabilities. As these senior liabilities are paid down, the senior and mezzanine tranches become better secured (due to the rerouting away from the income notes). Therefore, variances will exist between the calculated excess subordination measure and the amount of OTTI recognized due to the impact of the specific structural features of each bond as it relates to the cash flow models.

The following is a summary of available for sale single-issue trust preferred securities as of September 30, 2017:

Security	Moodys		S&P		Fitch		Amortized Cost		Fair Value		Unrealized Loss/ (Gain)
							(Dollars in thousands)
Emigrant Bank		NR		NR		WD	$	5,707	$	4,366	$	1,341
Bank of America		Ba1		NR		BBB-		4,680		4,819		(139	)
M&T Bank		NR		BBB-		BBB-		3,017		3,282		(265	)
							$	13,404	$	12,467	$	937

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 ($7.42 million) and Royal Bank of Scotland ($976 thousand).

During the third quarter of 2017, United did not recognize any other-than-temporary impairment charges. Management does not believe that any individual security with an unrealized loss as of September 30, 2017 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.

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Loans held for sale

Loans held for sale increased $306.59 million or 3,630.38% due mainly to the acquisition of Cardinal and its mortgage banking subsidiary, George Mason. Loan originations exceeded loan sales in the secondary market during the first nine months of 2017. Loan originations for the first nine months of 2017 were $1.72 billion while loans sales were $1.67 billion. Loans held for sale were $315.03 million at September 30, 2017 as compared to $8.45 million at year-end 2016.

Portfolio Loans

Loans, net of unearned income, increased $2.80 billion or 27.07% from year-end 2016 mainly as a result of the Cardinal acquisition which added $3.17 billion, including purchase accounting amounts, in portfolio loans. Since year-end 2016, commercial, financial and agricultural loans increased $1.72 billion or 28.25% as commercial real estate loans increased $1.58 billion or 35.21% and commercial loans (not secured by real estate) increased $144.30 million or 8.94%. In addition, residential real estate loans and other consumer loans increased $647.43 million or 26.94% and $88.90 million or 14.60%, respectively, while construction and land development loans increased $343.89 million or 27.39%. These increases were due primarily to the Cardinal acquisition. Otherwise, portfolio loans, net of unearned income, declined $369.23 million from year-end 2016.

The following table summarizes the changes in the major loan classes since year-end 2016:

	September 30			December 31
(Dollars in thousands)	2017			2016			$ Change			% Change
Loans held for sale	$	315,031		$	8,445		$	306,586			3,630.38	%
Commercial, financial, and agricultural:
Owner-occupied commercial real estate	$	1,364,757		$	1,049,885		$	314,872			29.99	%
Nonowner-occupied commercial real estate		4,686,183			3,425,453			1,260,730			36.80	%
Other commercial loans		1,757,741			1,613,437			144,304			8.94	%
Total commercial, financial, and agricultural	$	7,808,681		$	6,088,775		$	1,719,906			28.25	%
Residential real estate		3,050,868			2,403,437			647,431			26.94	%
Construction & land development		1,599,632			1,255,738			343,894			27.39	%
Consumer:
Bankcard		13,775			14,187			(412	)		(2.90	%)
Other consumer		683,898			594,582			89,316			15.02	%
Total gross loans	$	13,156,854		$	10,356,719		$	2,800,135			27.04	%
Less: Unearned income		(16,386	)		(15,582	)		(804	)		5.16	%
Total Loans, net of unearned income	$	13,140,468		$	10,341,137		$	2,799,331			27.07	%

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The following table summarizes the outstanding balances of portfolio loans originated and acquired, by type, as of September 30, 2017 and December 31, 2016:

	September 30, 2017
(In thousands)	Commercial, financial and agricultural		Residential real estate		Construction & land development		Consumer		Total
Originated	$	4,459,221	$	1,973,839	$	1,056,959	$	690,711	$	8,180,730
Acquired		3,349,460		1,077,029		542,673		6,962		4,976,124
Total gross loans	$	7,808,681	$	3,050,868	$	1,599,632	$	697,673	$	13,156,854
	December 31, 2016
(In thousands)	Commercial, financial and agricultural		Residential real estate		Construction & land development		Consumer		Total
Originated	$	4,457,470	$	1,914,273	$	1,095,972	$	603,781	$	8,071,496
Acquired		1,631,305		489,164		159,766		4,988		2,285,223
Total gross loans	$	6,088,775	$	2,403,437	$	1,255,738	$	608,769	$	10,356,719

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

Other Assets

Other assets increased $107.28 million or 25.86% from year-end 2016. The Cardinal acquisition added $135.38 million in other assets plus an additional $28.72 million in core deposit intangibles and $1.23 million for the George Mason trade name intangible. The cash surrender value of bank-owned life insurance policies increased $37.66 million, of which $33.50 million was acquired from Cardinal while the remaining increase was due to an increase in the cash surrender value. Deferred tax assets increased $30.77 million due mainly to the deferred taxes recorded on the purchase accounting adjustments in the Cardinal acquisition. The remainder of the increase in other assets is the result of an increase of $5.28 million in derivative assets from George Mason, an increase of $4.26 million in income taxes receivable due to a timing difference in payments and an increase of $4.94 million in accounts receivable. Partially offsetting these increases was a decrease of $4.68 million in OREO due to sales and declines in the fair values of properties.

Deposits

Deposits represent United’s primary source of funding. Total deposits at September 30, 2017 increased $3.08 billion or 28.51% from year-end 2016 as a result of the Cardinal acquisition. Cardinal added $3.35 billion in deposits, including purchase accounting amounts. In terms of composition, noninterest-bearing deposits increased $962.18 million or 30.34% while interest-bearing deposits increased $2.12 billion or 27.75% from December 31, 2016. Organically, deposits declined $269.74 million from year-end 2016.

The increase in noninterest-bearing deposits was due mainly to increases in commercial noninterest-bearing deposits of $793.09 million or 32.65% and personal noninterest-bearing deposits of $92.09 million or 16.03% as a result of the Cardinal acquisition. Public funds noninterest-bearing deposits increased $37.42 million or 37.07%.

All major categories of interest-bearing deposits increased from year-end 2016 as the result of the Cardinal acquisition. Interest-bearing checking accounts increased $418.90 million or 23.56% mainly due to a $110.68 million increase in commercial interest-bearing checking accounts and a $252.31 million increase in personal interest-bearing checking accounts. Regular savings increased $342.61 million or 47.50% due to the Cardinal acquisition. Interest-bearing MMDAs increased $617.08 million or 19.58% as commercial MMDAs increased $526.03 million or 28.59% and personal MMDAs increased $81.74 million or 7.03%. Time deposits under $100,000 increased $128.41 million or 18.53% due mainly to an increase in fixed rate certificates of deposits (CDs) of $89.24 million due to the Cardinal acquisition. Time deposits over $100,000 increased $609.25 million or 47.57% due to increases in brokered deposits of $163.45 million, fixed rate CDs of $255.88 million, Certificate of Deposit Account Registry Service (CDARS) balances of $88.09 million and public funds CDs of $95.64 million, all as a result of the Cardinal acquisition.

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The following table summarizes the changes in the deposit categories since year-end 2016:

(Dollars in thousands)	September 30 2017		December 31 2016		$ Change		% Change
Demand deposits	$	4,134,019	$	3,171,841	$	962,178		30.33	%
Interest-bearing checking		2,197,058		1,778,156		418,902		23.56	%
Regular savings		1,063,830		721,224		342,606		47.50	%
Money market accounts		3,768,979		3,151,896		617,083		19.58	%
Time deposits under $100,000		821,417		693,005		128,412		18.53	%
Time deposits over $100,000 (1)		1,889,994		1,280,745		609,249		47.57	%
Total deposits	$	13,875,297	$	10,796,867	$	3,078,430		28.51	%

(1) Includes time deposits of $250,000 or more of $935,197 and $536,507 at September 30, 2017 and December 31, 2016, respectively.

Borrowings

Total borrowings at September 30, 2017 increased $474.71 million or 34.36% during the first nine months of 2017. Cardinal added $316.33 million, including purchase accounting amounts, upon consummation of the acquisition. Since year-end 2016, short-term borrowings increased $282.49 million or 134.80% due to increases of $200.00 million and $78.92 million in short-term FHLB advances and short-term securities sold under agreements to repurchase, respectively. In addition, federal funds purchased increased $3.57 million. Cardinal added $96.21 million in short-term borrowings, all of which was repaid prior to quarter-end. Long-term borrowings increased $192.22 million or 16.40% since year-end 2016 as long-term FHLB advances increased $174.41 million and issuances of trust preferred capital securities increased $17.81 million. Cardinal added $220.12 million in long-term borrowings, $20 million of which was repaid prior to quarter-end.

The table below summarizes the change in the borrowing categories since year-end 2016:

(Dollars in thousands)	September 30 2017		December 31 2016		$ Change		% Change
Federal funds purchased	$	25,800	$	22,235	$	3,565		16.03	%
Short-term securities sold under agreements to repurchase		266,236		187,316		78,920		42.13	%
Long-term securities sold under agreements to repurchase		50,000		50,000		0		0.00	%
Short-term FHLB advances		200,000		0		200,000		100.00	%
Long-term FHLB advances		1,072,115		897,707		174,408		19.43	%
Issuances of trust preferred capital securities		242,131		224,319		17,812		7.94	%
Total borrowings	$	1,856,282	$	1,381,577	$	474,705		34.36	%

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 September 30, 2017 increased $40.10 million or 42.81% from year-end 2016. Cardinal added $50.93 million including an unfavorable lease liability of $2.28 million. In particular, deferred compensation increased $14.33 million, dividends payable increased $9.33 million, accrued mortgage escrow liabilities increased $6.05 million, other accrued expenses increased $8.12 million and income taxes payable increased $6.75 million. Partially offsetting these increases in accrued expenses and other liabilities was a decrease of $10.72 million in the pension liability due to a $10 million payment in the third quarter of 2017 and a decline of $1.58 million in derivative liabilities due to a change in fair value.

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Shareholders’ Equity

Shareholders’ equity at September 30, 2017 increased $1.03 billion or 45.98% from December 31, 2016 mainly as a result of the Cardinal acquisition. The Cardinal transaction added approximately $975.25 million in shareholders’ equity as 23,690,589 shares were issued from United’s authorized but unissued shares for the merger at a cost of approximately $972.50 million. Earnings net of dividends for the first nine months of 2017 were $36.57 million.

Accumulated other comprehensive income increased $10.55 million due mainly to an increase of $8.44 million in United’s available for sale investment portfolio, net of deferred income taxes. The after tax non-credit portion of pension costs was $2.11 million for the first nine months of 2017.

RESULTS OF OPERATIONS

Overview

Net income for the third quarter of 2017 was $56.74 million or $0.54 per diluted share, as compared to $41.48 million or $0.54 per diluted share for the prior year third quarter. Net income for the first nine months of 2017 was $132.61 million or $1.39 per diluted share compared to $107.98 million or $1.48 per share for the first nine months of 2016.

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 nine months and third quarter of 2017 were impacted for increased levels of average balances, income, and expense as compared to the first nine months and third quarter of 2016 and two full months in the second quarter of 2017.

In addition, as previously mentioned, United completed its acquisition of Bank of Georgetown on June 3, 2016. The financial results of Bank of Georgetown were included in United’s results from the acquisition date. As a result, the first nine months and third quarter of 2016 were impacted by increased levels of average balances, income, and expense. The third quarter and first nine months of 2017 included $532 thousand and $24.99 million, respectively, of merger-related expenses from the Cardinal acquisition and the third quarter and first nine months of 2016 included $924 thousand and $5.61 million, respectively, of merger-related expenses from the Bank of Georgetown acquisition.

For the third quarter of 2017, United’s annualized return on average assets was 1.19% and return on average shareholders’ equity was 6.89% as compared to 1.17% and 8.10% for the third quarter of 2016. United’s annualized return on average assets for the first nine months of 2017 was 1.03% and return on average shareholders’ equity was 6.22% as compared to 1.10% and 7.73% for the first nine months of 2016. 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 0.96% and 8.28%, respectively, for the first six months of 2017.

Net interest income for the third quarter of 2017 was $394.14 million, an increase of $39.21 million or 35.30% from the third quarter of 2016. The increase in net interest income occurred because total interest income increased $48.45 million while total interest expense only increased $9.24 million from the third quarter of 2016. Net interest income for the first nine months of 2017 was $394.14 million, an increase of $82.06 million or 26.30% from the prior year’s first nine months. The increase in net interest income occurred because total interest income increased $102.57 million while total interest expense only increased $20.51 million from the first nine months of 2016.

The provision for credit losses was $7.28 million and $21.43 million for the third quarter and first nine months of 2017, respectively, as compared to $6.99 million and $18.69 million for the third quarter and first nine months of 2016, respectively. For the third quarter of 2017, noninterest income was $38.23 million, which was an increase of $19.21 million or 100.98% from the third quarter of 2016. Noninterest income for the first nine months of 2017 was $98.88 million which was an increase of $45.50 million or 85.24% from the first nine months of 2016. These

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increases from 2016 were mainly due to additional income from mortgage banking activities as a result of the Cardinal acquisition. For the third quarter of 2017, noninterest expense increased $33.88 million or 53.96% from the third quarter of 2016. For the first nine months of 2017, noninterest expense increased $85.94 million or 46.28% from the first nine months of 2016. These increases from 2016 were due mainly to the Cardinal acquisition.

Income taxes for the third quarter of 2017 were $27.84 million as compared to $18.85 million for the third quarter of 2016. For the first nine months of 2017 and 2016, income tax expense was $67.36 million and $53.10 million, respectively. These increases for 2017 were due to higher earnings and a higher effective tax rate. For the quarters ended September 30, 2017 and 2016, United’s effective tax rate was 32.91% and 31.24%, respectively. The effective tax rate for the first nine months of 2017 and 2016 was 33.68% and 32.97%, respectively.

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 third quarter of 2017 was $59.94 million compared to net income of $42.97 million for the third quarter of 2016.

Net interest income increased $39.85 million to $152.89 million for the third quarter of 2017, compared to $113.03 million for the same period of 2016. Generally, net interest income for the third quarter of 2017 increased from the third quarter of 2016 because of the earning assets added from the Cardinal acquisition. Provision for loan losses was $7.28 million for the three months ended September 30, 2017 compared to a provision of $6.99 million for the same period of 2016. Noninterest income decreased $1.29 million for the third quarter of 2017 to $18.37 million as compared to $19.67 million for the third quarter of 2016. The decrease was mainly due to a decline of $1.14 million in income from bank-owned life insurance policies due to death benefits recorded in the third quarter of 2016. Noninterest expense was $74.55 million for the third quarter of 2017, compared to $63.01 million for the same period of 2016. The increase of $11.54 million in noninterest expense was primarily attributable to increases in branches, staffing and merger-related expenses from the Cardinal acquisition.

Net income attributable to the community banking segment for the first nine months of 2017 was $143.88 million compared to net income of $112.57 million for the first nine months of 2016.

Net interest income increased $83.21 million to $401.04 million for the first nine months of 2017, compared to $317.84 million for the same period of 2016. Generally, net interest income for the first nine months of 2017 increased from the first nine months of 2016 because of the earning assets added from the Cardinal acquisition. Provision for loan losses was $21.43 million for the nine months ended September 30, 2017 compared to a provision of $18.69 million for the same period of 2016. Noninterest income decreased by $1.91 million to $53.41 million for the first nine months of 2017 as compared to $55.32 million for the first nine months of 2016. The decrease was mainly due to a decline of $1.04 million in income from bank-owned life insurance policies due to death benefits recorded in the third quarter of 2016. Noninterest expense was $215.94 million for the nine months ended September 30, 2017, compared to $186.32 million for the same period of 2016. The increase of $29.61 million in noninterest expense was primarily attributable to increases in branches, staffing and merger-related expenses from the Cardinal acquisition.

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Mortgage Banking

The mortgage banking segment reported a net loss of $2.80 million and $322 thousand for the third quarter and first nine months of 2017, respectively. Noninterest income, which consists mainly of realized and unrealized gains associated with the fair value of commitments and loans held for sale, was $19.94 million and $42.33 million for the third quarter and first nine months of 2017, respectively. Noninterest expense was $24.04 million and $42.74 million for the third quarter and first nine months of 2017, respectively. Noninterest expense consists mainly of salaries, commissions and benefits of mortgage segment employees. There is no comparison to results for 2016 because United did not have a mortgage banking segment in 2016.

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

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 2017 and 2016, are presented below.

Net interest income for the third quarter of 2017 was $150.28 million, which was an increase of $39.21 million or 35.30% from the third quarter of 2016. The $39.21 million increase in net interest income occurred because total interest income increased $48.45 million while total interest expense only increased $9.24 million from the third quarter of 2016. Net interest income for the first nine months of 2017 was $394.14 million, which was an increase of $82.06 million or 26.30% from the first nine months of 2016. The $82.06 million increase in net interest income occurred because total interest income increased $102.57 million while total interest expense only increased $20.51 million from the first nine months of 2016. On a linked-quarter basis, net interest income for the third quarter of 2017 increased $14.03 million or 10.30% from the second quarter of 2017. The $14.03 million increase in net interest income occurred because total interest income increased $16.64 million while total interest expense only increased $2.61 million from the second quarter of 2017. Generally, interest income for the third quarter and first nine months of 2017 increased from the third quarter and first nine months of 2016 because of the earning assets added from the Cardinal acquisition. In addition, loan accretion on acquired loans for the third quarter and first nine months of 2017 increased from the same time periods last year and the second quarter of 2017. 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 third quarter of 2017 was $152.37 million, an increase of $39.74 million or 35.29% from the third quarter of 2016 due mainly to an increase in average earning assets from the Cardinal acquisition. Average earning assets for the third quarter of 2017 increased $3.97 billion or 31.53% from the third quarter of 2016 due mainly to a $3.18 billion or 30.66% increase in average net loans. Average short-term investments increased $436.66 million or 53.90% while average investment securities increased $360.25 million or 25.15%. The third quarter of 2017 average yield on earning assets increased 22 basis points from the third quarter of 2016 due to additional loan accretion of $7.68 million on acquired loans and higher market interest rates. Partially offsetting the increases to tax-equivalent net interest income for the third quarter of 2017 was an increase of 19 basis points in the average cost of funds as compared to the third quarter of 2016 due to the higher market interest rates. The net interest margin of 3.65% for the third quarter of 2017 was an increase of 9 basis points from the net interest margin of 3.56% for the third quarter of 2016.

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Tax-equivalent net interest income for the first nine months of 2017 was $400.31 million, an increase of $83.67 million or 26.42% from the first nine months of 2016. This increase in tax-equivalent net interest income was primarily attributable to an increase in average earning assets from the Cardinal acquisition. Average earning assets increased $3.53 billion or 30.25% from the first nine months of 2016 as average net loans increased $2.51 billion or 25.66% for the first nine months of 2017. Average investment securities increased $340.92 million or 26.26%. Partially offsetting the increases to tax-equivalent net interest income for the first nine months of 2017 was an increase of 15 basis points in the average cost of funds as compared to the first nine months of 2016 due to higher market interest rates. In addition, the first nine months of 2017 average yield on earning assets decreased a basis point from the first nine months of 2016 due to the replacement of maturing higher-yielding investment securities with those at a lower current interest rate despite an increase of $11.64 million from accretion on acquired loans. The net interest margin of 3.52% for the first nine months of 2017 was a decrease of 10 basis points from the net interest margin of 3.62% for the first nine months of 2016.

On a linked-quarter basis, United’s tax-equivalent net interest income for the third quarter of 2017 increased $13.61 million or 9.81% due mainly to increases in the average yield on and the average balance of earning assets. The third quarter of 2017 average yield on earning assets increased 25 basis points from the second quarter of 2017 due to additional loan accretion of $5.45 million on acquired loans. Average earning assets increased $426.47 million or 2.64% for the linked-quarter due to the Cardinal acquisition. Average net loans increased $492.64 million or 3.78% while average investment securities increased $40.60 million or 2.32%. Average short-term investments decreased $106.77 million or 7.89%. Partially offsetting the increases to tax-equivalent net interest income for the third quarter of 2017 was an increase of 7 basis points in the average cost of funds as compared to the second quarter of 2017 due to higher market interest rates. The net interest margin of 3.65% for the third quarter of 2017 was an increase of 21 basis points from the net interest margin of 3.44% for the second quarter of 2017.

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 September 30, 2017, September 30, 2016 and June 30, 2017 and the nine months ended September 30, 2017 and September 30, 2016:

	Three Months Ended
	September 30		September 30		June 30
(Dollars in thousands)	2017		2016		2017
Loan accretion	$	12,805	$	5,121	$	7,355
Certificates of deposit		817		63		776
Long-term borrowings		268		22		197
Total	$	13,890	$	5,206	$	8,328

	Nine Months Ended
	September 30		September 30
(Dollars in thousands)	2017		2016
Loan accretion	$	24,395	$	12,750
Certificates of deposit		1,640		63
Long-term borrowings		348		328
Tax-equivalent net interest income	$	26,383	$	13,141

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The following tables reconcile the difference between net interest income and tax-equivalent net interest income for the three months ended September 30, 2017, September 30, 2016 and June 30, 2017 and the nine months ended September 30, 2017 and September 30, 2016.

	Three Months Ended
	September 30		September 30		June 30
(Dollars in thousands)	2017		2016		2017
Net interest income, GAAP basis	$	150,276	$	111,069	$	136,245
Tax-equivalent adjustment (1)		2,092		1,556		2,512
Tax-equivalent net interest income	$	152,368	$	112,625	$	138,757

	Nine Months Ended
	September 30		September 30
(Dollars in thousands)	2017		2016
Net interest income, GAAP basis	$	394,141	$	312,078
Tax-equivalent adjustment (1)		6,168		4,562
Tax-equivalent net interest income	$	400,309	$	316,640

(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 35%. 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 and six-month periods ended September 30, 2017 and 2016, 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 35%. Interest income on all loans and investment securities was subject to state income taxes.

	Three Months Ended								Three Months Ended
	September 30, 2017								September 30, 2016
(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	$	1,246,742		$	4,874		1.55	%	$	810,081		$	1,107		0.54	%
Investment Securities:
Taxable		1,533,444			9,406		2.45	%		1,270,734			8,764		2.76	%
Tax-exempt		259,189			2,284		3.52	%		161,651			1,527		3.78	%
Total Securities		1,792,633			11,690		2.61	%		1,432,385			10,291		2.87	%
Loans, net of unearned income (2)		13,607,933			157,111		4.59	%		10430,449			113,295		4.32	%
Allowance for loan losses		(73,031	)							(71,493	)
Net loans		13,534,902					4.61	%		10,358,956					4.35	%
Total earning assets		16,574,277		$	173,675		4.16	%		12,601,422		$	124,693		3.94	%
Other assets		2,353,508								1,558,147
TOTAL ASSETS	$	18,927,785							$	14,159,569
LIABILITIES
Interest-Bearing Funds:
Interest-bearing deposits	$	9,837,967		$	14,227		0.57	%	$	7,255,184		$	7,723		0.42	%
Short-term borrowings		325,631			430		0.52	%		519,807			553		0.42	%
Long-term borrowings		1,364,417			6,650		1.93	%		1,171,599			3,792		1.29	%
Total Interest-Bearing Funds		11,528,015			21,307		0.73	%		8,946,590			10,068		0.54	%
Noninterest-bearing deposits		4,036,653								3,105,273
Accrued expenses and other liabilities		97,575								71,670
TOTAL LIABILITIES		15,662,243								12,123,533
SHAREHOLDERS’ EQUITY		3,265,542								2,036,036
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$	18,927,785							$	14,159,569
NET INTEREST INCOME				$	152,368							$	112,625
INTEREST SPREAD							3.43	%							3.40	%
NET INTEREST MARGIN							3.65	%							3.56	%

(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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	Nine Months Ended								Nine Months Ended
	September 30, 2017								September 30, 2016
(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 repurchased under agreements to resell and other short-term investments	$	1,282,589		$	11,345		1.18	%	$	599,695		$	2,371		0.53	%
Investment Securities:
Taxable		1,412,221			26,226		2.48	%		1,162,082			24,728		2.84	%
Tax-exempt		227,171			6,242		3.66	%		136,386			4,130		4.04	%
Total Securities		1,639,392			32,468		2.64	%		1,298,468			28,858		2.96	%
Loans, net of unearned income (2)		12,360,252			409,643		4.43	%		9,852,670			318,053		4.31	%
Allowance for loan losses		(72,904	)							(74,198	)
Net loans		12,287,348					4.46	%		9,778,472					4.34	%
Total earning assets		15,209,329		$	453,456		3.99	%		11,676,635		$	349,282		4.00	%
Other assets		1,978,315								1,427,763
TOTAL ASSETS	$	17,187,644							$	13,104,398
LIABILITIES
Interest-Bearing Funds:
Interest-bearing deposits	$	9,024,232		$	35,281		0.52	%	$	6,815,863		$	21,278		0.42	%
Short-term borrowings		298,213			1,149		0.52	%		396,769			1,132		0.38	%
Long-term borrowings		1,286,583			16,717		1.74	%		1,100,741			10,232		1.24	%
Total Interest-Bearing Funds		10,609,028			53,147		0.67	%		8,313,373			32,642		0.52	%
Non-interest bearing deposits		3,639,507								2,856,807
Accrued expenses and other liabilities		90,112								67,820
TOTAL LIABILITIES		14,338,647								11,238,000
SHAREHOLDERS’ EQUITY		2,848,997								1,866,398
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$	17,187,644							$	13,104,398
NET INTEREST INCOME				$	400,309							$	316,640
INTEREST SPREAD							3.32	%							3.48	%
NET INTEREST MARGIN							3.52	%							3.62	%

(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.

Provision for Loan Losses

For the quarters ended September 30, 2017 and 2016, the provision for loan losses was $7.28 million and $6.99 million, respectively. The provision for loan losses for the first nine months of 2017 and 2016 was $21.43 million and $18.69 million, respectively. Net charge-offs were $5.34 million for the third quarter of 2017 as compared to net charge-offs of $6.78 million for the same quarter in 2016. Net charge-offs for the first nine months of 2017 were $19.27 million as compared to $21.76 million for the first nine months of 2016. The higher amounts of provision expense for the periods in 2017 compared to the same periods in 2016 were due to an increase in impaired loans necessitating specific allowance allocation. The lower amounts of net charge-offs for the periods in 2017 compared to

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the same periods in 2016 were due to the charge-off in 2016 of a large loan relationship which had deteriorated to the point of non-collectability. On a linked-quarter basis, the provision for loan losses and net charge-offs decreased $972 thousand and $2.81 million, respectively, from the second quarter of 2017 due mainly to providing for additional allowance allocation needs within the existing portfolio and recognition of charge-offs on previously impaired loans. Annualized net charge-offs as a percentage of average loans were 0.16% and 0.21% for the third quarter and first nine months of 2017, respectively.

At September 30, 2017, nonperforming loans were $168.40 million or 1.28% of loans, net of unearned income compared to nonperforming loans of $113.26 million or 1.10% of loans, net of unearned income at December 31, 2016. 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 and still on accrual were $22.25 million at September 30, 2017 which was an increase of $13.66 million or 159.13% from $8.59 million at year-end 2016. The increase was due to the delinquency of a $14.83 million credit at quarter-end. At September 30, 2017, nonaccrual loans were $100.02 million, an increase of $16.49 million or 19.74% from $83.53 million at year-end 2016. This increase was due to the downgrade and transfer to nonaccrual of several oil, gas and coal industry relationships within the Company’s loan portfolio. Restructured loans were $46.13 million at September 30, 2017, an increase of $24.98 million or 118.10% from $21.15 million at year-end 2016. Ten loans totaling $30.89 million were restructured during the first nine months of 2017. Two of the restructured loans totaling $20.99 million were associated with an oil, gas and coal industry-related relationship. The remaining difference was mainly due to repayments and a charge-off. 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 $195.22 million, including OREO of $26.83 million at September 30, 2017, represented 1.02% of total assets.

The following table summarizes nonperforming assets for the indicated periods.    

	September 30,		December 31,
(In thousands)	2017		2016		2015		2014		2013		2012
Nonaccrual Loans
Originated	$	93,731	$	77,111	$	83,146	$	64,312	$	58,121	$	66,711
Acquired		6,285		6,414		8,043		10,739		3,807		4,848
Loans which are contractually past due 90 days or more as to interest or principal, and are still accruing interest
Originated		21,464		7,763		11,462		10,868		10,015		13,819
Acquired		785		823		166		807		1,029		4,249
Restructured loans
Originated		44,695		21,115		23,890		22,234		8,157		3,175
Acquired		1,437		37		0		0		0		0
Total nonperforming loans	$	168,397	$	113,263	$	126,707	$	108,960	$	81,129	$	92,802
Other real estate owned		26,826		31,510		32,228		38,778		38,182		49,484
TOTAL NONPERFORMING ASSETS	$	195,223	$	144,773	$	158,935	$	147,738	$	119,311	$	142,286

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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 September 30, 2017, impaired loans were $420.46 million, which was an increase of $112.02 million or 36.32% from $308.44 million at December 31, 2016. This increase was due mainly to the acquired impaired loans from Cardinal and the Company’s 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 $227.75 million and $310.61 million, respectively, at September 30, 2017 as compared to $171.60 million and $231.10 million, respectively, at December 31, 2016. 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 $70.75 million and $58.88 million at September 30, 2017 and December 31, 2016, 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 September 30, 2017 and December 31, 2016, the allowance for credit losses was $75.73 million and $73.82 million, respectively.

At September 30, 2017, the allowance for loan losses was $74.93 million as compared to $72.78 million at December 31, 2016. As a percentage of loans, net of unearned income, the allowance for loan losses was 0.57% at September 30, 2017 and 0.70% at December 31, 2016, respectively. The ratio of the allowance for loan losses to nonperforming loans or coverage ratio was 44.49% and 64.25% at September 30, 2017 and December 31, 2016, 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 September 30, 2017 produced increased allocations in one of the four loan categories. The commercial, financial & agricultural loan pool allocation increased $8.16 million primarily due to an increase in other commercial 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 $2.60 million due to recognition of losses previously allocated. The residential real estate loan pool allocation decreased $2.92 million due to improvement in the Bank’s collateral position for a significant relationship and reduction of impairment allocation required. The consumer loan pool also experienced a decrease of $290 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 2016 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 $26.75 million at September 30, 2017 and $23.42 million at December 31, 2016. In comparison to the prior year-end, this element of the allowance increased by $3.33 million primarily due to increased specific allocations for commercial, financial & agricultural loans.

Management believes that the allowance for credit losses of $75.73 million at September 30, 2017 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 third quarter of 2017 was $38.23 million, an increase of $19.21 million or 100.98% from the third quarter of 2016. Noninterest income for the first nine months of 2017 was $98.88 million, which was an increase of $45.50 million or 85.24% from the first nine months of 2016.

Income from mortgage banking activities totaled $20.39 million for the third quarter of 2017 compared to $982 thousand for the same period of 2016. For the first nine months of 2017 and 2016, income from mortgage banking activities was $43.60 million and $2.50 million, respectively. The increases for 2017 are the result of the acquisition of Cardinal and, in particular, the acquisition of its mortgage banking subsidiary, George Mason. For the three months ended September 30, 2017 and 2016, mortgage loan sales were $908.60 million and $43.32 million, respectively. For the nine months ended September 30, 2017 and 2016, mortgage loan sales were $1.67 billion and $112.70 million, respectively.

For the third quarter of 2017, fees from deposit services were $8.74 million, an increase of $438 thousand or 5.27% from the third quarter of 2016. In particular, overdraft fees and ATM income increased $167 thousand and $160 thousand, respectively. Fees from deposit services for the first nine months of 2017 were $24.98 million, an increase of $309 thousand or 1.25% from the first nine months of 2016. In particular, debit card income increased $236 thousand during the first nine months of 2017.

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Partially offsetting these increases to noninterest income was a decline in income from bank-owned life insurance policies. Income from bank-owned life insurance for the third quarter and first nine months of 2017 decreased $1.14 million or 44.79% and $1.04 million or 21.07%, respectively, from the third quarter and first nine months of 2016. These decreases were due to death benefits recorded in the third quarter of 2016.

On a linked-quarter basis, noninterest income for the third quarter of 2017 decreased $2.28 million or 5.62% from the second quarter of 2017 due mainly to a decline of $2.15 million in income from mortgage banking activities despite increased production and sales of mortgage loans in the secondary market. The decline was due mainly to the impact of Accounting Standards Codification (ASC) 815 “Derivatives and Hedging” (ASC 815-10-S99-1), formerly Staff Accounting Bulletin (SAB) 109, accounting requirement to record unrealized gains associated with George Mason’s locked mortgage loan pipeline which creates a timing difference in the recognition of income as the loans are sold. The impact of ASC 815-10-S99-1 resulted in a decline of $4.48 million in income for the third quarter of 2017 versus an increase of $1.02 million in income for the second quarter of 2017.

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 increased $33.88 million or 53.96% for the third quarter of 2017 compared to the same period in 2016. For the first nine months of 2017, noninterest expense increased $85.94 million or 46.28% from the first nine months of 2016. Generally, these increases in 2017 from 2016 were the result of additional general operating expenses and increased merger-related charges from the Cardinal acquisition.

Employee compensation for the third quarter of 2017 increased $20.10 million or 82.99% from the third quarter of 2016. Employee compensation increased $54.12 million or 78.29% for the first nine months of 2017 when compared to the first nine months of 2016. Merger severance charges of $12.78 million from the Cardinal acquisition were included in first nine months of 2017 as compared to $670 thousand in the first nine of 2016 from the Bank of Georgetown acquisition. Otherwise, base salaries for the third quarter and first nine months of 2017 increased $9.37 million or 44.67% and $19.49 million or 32.41%, respectively, from the same time periods in 2016 due mainly to additional employees from the Cardinal acquisition. The remainder of the increase in employee compensation for the third quarter and first nine months of 2017 was due mainly to higher employee incentives and commissions expense mainly related to the mortgage banking production of George Mason.

Employee benefits expense for the third quarter of 2017 increased $2.10 million or 28.00% from the third quarter of 2016. Employee benefits expense for the first nine months of 2017 increased $5.99 million or 28.03% as compared to the first nine months of 2016. The increases for third quarter and first nine months of 2017 were due in large part to additional health insurance expense of $1.11 million and $2.68 million, respectively, from the same time periods last year due to higher premiums and additional employees from the Cardinal acquisition. In addition, Federal Insurance Contributions Act (FICA) expense for third quarter and first nine months of 2017 increased $784 thousand and $2.69 million, respectively, from the third quarter and first nine months of 2016 due mainly to the additional employees from the Cardinal acquisition

Net occupancy expense increased $2.45 million or 35.34% and $9.12 million or 43.52% for the third quarter and first nine months of 2017, respectively, as compared to the same periods in the prior year. The increases were due mainly to additional building rental expense from the offices added in the Cardinal acquisition. Included in net occupancy expense for the first nine months of 2017 were charges of $5.93 million for the termination of leases and the reduction in the value of leasehold improvements for closed offices in the Cardinal acquisition as compared to charges of $1.58 million in the third quarter and first nine months of 2016 for the termination of leases for closed offices in the Bank of Georgetown acquisition.

Other real estate owned (OREO) expense for the third quarter of 2017 increased $1.37 million or 102.16% from the third quarter of 2016 due to declines in the fair value on OREO properties.

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Data processing expense increased $1.74 million or 45.11% and $3.97 million or 36.05% for the third quarter and first nine months of 2017, respectively, as compared to the same periods in prior year due to additional processing as a result of the Cardinal acquisition. In addition, the results for first nine months of 2017 included a penalty of $525 thousand for the termination of Cardinal’s data processing contract.

Federal Deposit Insurance Corporation (FDIC) insurance expense for the third quarter and first nine months of 2017 decreased $546 thousand or 26.17% and $1.28 million or 20.17%, respectively, from the third quarter and first nine months of 2016 due to lower premiums.

Other expense for the third quarter of 2017 increased $5.75 million or 40.18% from the third quarter of 2016. Other expense for the first nine months of 2017 increased $12.63 million or 28.19% from the first nine months of 2016. Included in other expense for the third quarter and first nine months of 2017 were merger-related expenses of $434 thousand and $5.83 million, respectively, as compared to merger-related expenses of $620 thousand and $2.78 million, respectively for the third quarter and first nine months of 2016. Amortization of core deposit intangibles increased $1.12 million and $2.60 million for the third quarter and first nine months of 2017, respectively, as compared to the same periods in 2016 due to the additional core deposit intangibles added in the Cardinal acquisition. Business and occupation (B&O) taxes increased $1.32 million and $2.47 million for the third quarter and first nine months of 2017, respectively, as compared to the same periods in 2016.

On a linked-quarter basis, noninterest expense for the third quarter of 2017 decreased $15.49 million or 13.81% from the second quarter of 2017 generally due to a decline of $22.62 million in merger-related expenses. Partially offsetting this decrease was an increase in OREO expense of $2.19 million due to declines in the fair value of OREO properties.

Income Taxes

For the third quarter of 2017, income tax expense was $27.84 million as compared to $18.85 million for the third quarter of 2016. This increase was mainly due to higher earnings and a higher effective tax rate as the result of a reduction in the income tax expense for the third quarter of 2016 due to an increase in United’s deferred tax rate. For the first nine months of 2017, income tax expense was $67.36 million as compared to $53.10 million for the first nine months of 2016 due to higher earnings and a higher effective tax rate. On a linked-quarter basis, income tax expense increased $8.53 million due to higher earnings partially offset by a decline in the effective tax rate due to the Cardinal acquisition. United’s effective tax rate was 32.91% for the third quarter of 2017, 34.25% for the second quarter of 2017 and 31.24% for the third quarter of 2016. For the first nine months of 2017 and 2016, United’s effective tax rate was 33.68% and 32.97%, respectively. 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, 2016 for disclosures with respect to United’s fixed and determinable contractual obligations. As previously mentioned, United completed its acquisition of Cardinal during the second quarter of 2017. As such, United assumed the financial obligations of Cardinal, including contractual obligations and commitments, which also may require future payments. Otherwise, there have been no material changes outside the ordinary course of business since year-end 2016 in the specified contractual obligations disclosed in United’s Annual Report on Form 10-K.

As of September 30, 2017, United recorded a liability for uncertain tax positions, including interest and penalties, of $2.41 million in accordance with ASC topic 740. This liability represents an estimate of tax positions that United has

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taken in its tax returns which may ultimately not be sustained upon examination by tax authorities. Since the ultimate amount and timing of any future cash settlements cannot be predicted with reasonable certainty, this estimated liability is excluded from the contractual obligations table in the 2016 Form 10-K report.

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 September 30, 2017 do not present the amounts that may ultimately be paid under these contracts, they are excluded from the contractual obligations table in the 2016 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 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.

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For the nine months ended September 30, 2017, cash of $125.15 million was provided by operating activities due mainly to net income of $132.61 million for the first nine months of 2017. Net cash of $384.45 million was provided by investing activities which was primarily due to net repayments on loans of $369.23 million and net cash of $44.53 million provided in the acquisition of Cardinal. During the first nine months of 2017, net cash of $197.09 million was used in financing activities due primarily to a decline in deposits of $269.74 million, net repayment of long-term borrowings of $30.21 million and the payment of cash dividends in the amount of $86.71 million. Partially offsetting these decreases to cash were net proceeds of $200.00 million in short-term FHLB borrowings. The net effect of the cash flow activities was an increase in cash and cash equivalents of $312.51 million for the first nine months of 2017.

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 14.26% at September 30, 2017 while its Common Equity Tier 1 capital, Tier 1 capital and leverage ratios are 11.99%, 11.99% and 10.09%, 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%.

Total shareholders’ equity was $3.26 billion at September 30, 2017, increasing $1.03 billion or 45.98% from December 31, 2016 primarily due to the Cardinal acquisition. United’s equity to assets ratio was 17.06% at September 30, 2017 as compared to 15.41% at December 31, 2016. The primary capital ratio, capital and reserves to total assets and reserves, was 17.39% at September 30, 2017 as compared to 15.84% at December 31, 2016. United’s average equity to average asset ratio was 17.25% for the third quarter of 2017 as compared to 14.38% the third quarter of 2016. United’s average equity to average asset ratio was 16.58% for the first nine months of 2017 as compared to 14.24% for the first half of 2016. All of these financial measurements reflect a financially sound position.

During the third quarter of 2017, United’s Board of Directors declared a cash dividend of $0.33 per share. Cash dividends were $0.99 per common share for the first nine months of 2017. Total cash dividends declared were $34.64 million for the third quarter of 2017 and $96.04 million for the first nine months of 2017 as compared to $25.22 million and $73.38 million, respectively, for the third quarter and first nine months of 2016.

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.

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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 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 September 30, 2017 and December 31, 2016:

Change in Interest Rates (basis points)	Percentage Change in Net Interest Income
	September 30, 2017	December 31, 2016
+200	(0.22%)	(2.05%)
+100	(0.02%)	(1.05%)
-100	0.22%	1.87%
-200	—	—

At September 30, 2017, 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 0.02% over one year as compared to a decrease of 1.05% at December 31, 2016. A 200 basis point immediate, sustained upward shock in the yield curve would decrease net interest income by an estimated 0.22% over one year as of September 30, 2017, as compared to a decrease of 2.05% as of December 31, 2016. A 100 basis point immediate, sustained downward shock in the yield curve would increase net interest income by an estimated 0.22% over one year as of September 30, 2017 as compared to an increase of 1.87%, over one year as of December 31, 2016. With the federal funds rate at 1.25% at September 30, 2017 and 0.75% at December 31, 2016, management believed a 200 basis point immediate, sustained decline in rates was highly unlikely.

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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 2.58% in year two as of September 30, 2017. A 200 basis point immediate, sustained upward shock in the yield curve would increase net interest income by an estimated 4.80% in year two as of September 30, 2017. A 100 basis point immediate, sustained downward shock in the yield curve would decrease net interest income by an estimated 1.95% in year two as of September 30, 2017.

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 banks are members 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.”

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 September 30, 2017, United’s mortgage related securities portfolio had an amortized cost of $1.1 billion, of which approximately $664 million or 58% 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 3.9 years and a weighted average yield of 2.51%, 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 4.6 years. The projected price decline of the fixed rate CMO portfolio in rates up 300 basis points would be 11.3%, 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 16.9%.

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United had approximately $257 million in balloon and other securities with a projected yield of 2.12% and a projected average life of 4.1 years on September 30, 2017. This portfolio consisted primarily of Fannie Mae Delegated Underwriting and Servicing (DUS) mortgage backed securities (MBS) with a weighted average loan age (WALA) of 3.8 years and a weighted average maturity (WAM) of 4.4 years.

United had approximately $63 million in 15-year mortgage backed securities with a projected yield of 2.20% and a projected average life of 3.7 years as of September 30, 2017. 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 9.9 years.

United had approximately $69 million in 20-year mortgage backed securities with a projected yield of 2.68% and a projected average life of 5 years on September 30, 2017. This portfolio consisted of seasoned 20-year mortgage paper with a weighted average loan age (WALA) of 5.1 years and a weighted average maturity (WAM) of 14.5 years.

United had approximately $65 million in 30-year mortgage backed securities with a projected yield of 2.60% and a projected average life of 5.5 years on September 30, 2017. 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 26.3 years.

The remaining 2% of the mortgage related securities portfolio at September 30, 2017, included adjustable rate securities (ARMs), 10-year mortgage backed pass-through securities and other fixed rate mortgage backed securities.

Item 4. CONTROLS AND PROCEDURES

As of September 30, 2017, 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 September 30, 2017 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 September 30, 2017, or in other factors that have materially affected or are reasonably likely to materially affect United’s internal control over financial reporting.

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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, 2016 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, 2016.

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

There have been no United equity securities sales during the quarter ended September 30, 2017 that were not registered. The table below includes certain information regarding United’s purchase of its common shares during the quarter ended September 30, 2017:

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)
7/01 – 7/31/2017		0	$	00.00		0		2,000,000
8/01 – 8/31/2017		4	$	41.58		0		2,000,000
9/01 – 9/30/2017		0	$	00.00		0		2,000,000
Total		4	$	41.58		0

(1) Includes shares exchanged in connection with the exercise of stock options under United’s stock option plans. Shares are purchased pursuant to the terms of the applicable stock option plan and not pursuant to a publicly announced stock repurchase plan. For the quarter ended September 30, 2017, no shares were exchanged by participants in United’s stock option 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 September 30, 2017, the following shares were purchased for the deferred compensation plan: August 2017 – 4 shares at an average price of $41.58.

(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.

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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)

91

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:	November 9, 2017	/s/    Richard M. Adams
		Richard M. Adams, Chairman of
		the Board and Chief Executive Officer
Date:	November 9, 2017	/s/    W. Mark Tatterson
		W. Mark Tatterson, Executive Vice President and Chief Financial Officer

92

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:	November 9, 2017	/s/ Richard M. Adams
		Richard M. Adams, Chairman of the
		Board and Chief Executive Officer

93

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:	November 9, 2017	/s/ W. Mark Tatterson
		W. Mark Tatterson, Executive
		Vice President and Chief Financial
		Officer

94

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 September 30, 2017 (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:	November 9, 2017	/s/ Richard M. Adams
		Name: Richard M. Adams
		Title: Chief Executive Officer

95

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 September 30, 2017 (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:	November 9, 2017	/s/ W. Mark Tatterson
		Name: W. Mark Tatterson
		Title: Chief Financial Officer

96

XML

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 31, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q3
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		104,992,423

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 212,692	$ 175,468
Interest-bearing deposits with other banks	1,533,558	1,258,334
Federal funds sold	787	725
Total cash and cash equivalents	1,747,037	1,434,527
Securities available for sale at estimated fair value (amortized cost-$1,654,657 at September 30, 2017 and $1,277,639 at December 31, 2016)	1,649,634	1,259,214
Securities held to maturity (estimated fair value-$19,909 at September 30, 2017 and $31,178 at December 31, 2016)	20,335	33,258
Other investment securities	166,756	111,166
Loans held for sale (at fair value-$311,186 at September 30, 2017 and $0 at December 31, 2016)	315,031	8,445
Loans	13,156,854	10,356,719
Less: Unearned income	(16,386)	(15,582)
Loans net of unearned income	13,140,468	10,341,137
Less: Allowance for loan losses	(74,926)	(72,771)
Net loans	13,065,542	10,268,366
Bank premises and equipment	104,311	75,909
Goodwill	1,487,607	863,767
Accrued interest receivable	51,607	39,400
Other assets	522,118	414,840
TOTAL ASSETS	19,129,978	14,508,892
Deposits:
Noninterest-bearing	4,134,019	3,171,841
Interest-bearing	9,741,278	7,625,026
Total deposits	13,875,297	10,796,867
Borrowings:
Federal funds purchased	25,800	22,235
Securities sold under agreements to repurchase	316,236	237,316
Federal Home Loan Bank borrowings	1,272,115	897,707
Other long-term borrowings	242,131	224,319
Reserve for lending-related commitments	804	1,044
Accrued expenses and other liabilities	133,752	93,657
TOTAL LIABILITIES	15,866,135	12,273,145
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-105,011,878 and 81,068,252 at September 30, 2017 and December 31, 2016, respectively, including 28,752 and 28,278 shares in treasury at September 30, 2017 and December 31, 2016, respectively	262,530	202,671
Surplus	2,126,914	1,205,778
Retained earnings	909,556	872,990
Accumulated other comprehensive loss	(34,163)	(44,717)
Treasury stock, at cost	(994)	(975)
TOTAL SHAREHOLDERS' EQUITY	3,263,843	2,235,747
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 19,129,978	$ 14,508,892

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Securities available for sale, amortized cost	$ 1,654,657	$ 1,277,639
Securities held to maturity	19,909	31,178
Loans held for sale at fair value	$ 311,186	$ 0
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	105,011,878	81,068,252
Common stock, shares in treasury	28,752	28,278

XML

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest income
Interest and fees on loans	$ 155,819	$ 112,273	$ 405,660	$ 314,936
Interest on federal funds sold and other short-term investments	4,874	1,107	11,345	2,371
Interest and dividends on securities:
Taxable	9,406	8,764	26,226	24,728
Tax-exempt	1,484	993	4,057	2,685
Total interest income	171,583	123,137	447,288	344,720
Interest expense
Interest on deposits	14,227	7,723	35,281	21,278
Interest on short-term borrowings	430	553	1,149	1,132
Interest on long-term borrowings	6,650	3,792	16,717	10,232
Total interest expense	21,307	12,068	53,147	32,642
Net interest income	150,276	111,069	394,141	312,078
Provision for loan losses	7,279	6,988	21,429	18,690
Net interest income after provision for loan losses	142,997	104,081	372,712	293,388
Other income
Fees from trust and brokerage services	5,052	4,891	14,683	14,552
Fees from deposit services	8,744	8,306	24,978	24,669
Bankcard fees and merchant discounts	1,332	1,551	3,432	3,754
Other service charges, commissions, and fees	535	500	1,533	1,725
Income from bank-owned life insurance	1,403	2,541	3,878	4,913
Income from mortgage banking activities	20,385	982	43,597	2,499
Other income	311	249	1,626	1,050
Total other-than-temporary impairment losses	0	0	(60)	339
Portion of loss recognized in other comprehensive income	0	0	0	(372)
Net other-than-temporary impairment losses	0	0	(60)	(33)
Net gains on sales/calls of investment securities	467	1	5,214	251
Net investment securities gains	467	1	5,154	218
Total other income	38,229	19,021	98,881	53,380
Other expense
Employee compensation	44,308	24,213	123,240	69,123
Employee benefits	9,578	7,483	27,372	21,380
Net occupancy expense	9,364	6,919	30,061	20,945
Other real estate owned (OREO) expense	2,713	1,342	4,651	4,654
Equipment expense	3,057	2,097	7,493	6,162
Data processing expense	5,597	3,857	14,971	11,004
Bankcard processing expense	449	480	1,356	1,283
FDIC insurance expense	1,540	2,086	5,062	6,341
Other expense	20,046	14,300	57,425	44,796
Total other expense	96,652	62,777	271,631	185,688
Income before income taxes	84,574	60,325	199,962	161,080
Income taxes	27,836	18,846	67,356	53,103
Net income	$ 56,738	$ 41,479	$ 132,606	$ 107,977
Earnings per common share:
Basic	$ 0.54	$ 0.54	$ 1.39	$ 1.49
Diluted	0.54	0.54	1.39	1.48
Dividends per common share	$ 0.33	$ 0.33	$ 0.99	$ 0.99
Average outstanding shares:
Basic	104,760,153	76,218,573	95,040,664	72,413,246
Diluted	105,068,122	76,647,773	95,450,626	72,746,363

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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 56,738	$ 41,479	$ 132,606	$ 107,977
Change in net unrealized gain (loss) on available-for-sale (AFS) securities, net of tax	1,964	(4,865)	8,443	7,944
Accretion of the net unrealized loss on the transfer of AFS securities to held-to-maturity (HTM) securities, net of tax	2	2	4	4
Change in pension plan assets, net of tax	717	777	2,107	2,235
Comprehensive income, net of tax	$ 59,421	$ 37,393	$ 143,160	$ 118,160

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Consolidated Statement of Changes in Shareholders' Equity (Unaudited) - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Total	Cardinal Financial Corporation [Member]	Deferred Compensation Plan [Member]	Common Stock [Member]	Common Stock [Member] Cardinal Financial Corporation [Member]	Common Stock [Member] Deferred Compensation Plan [Member]	Surplus [Member]	Surplus [Member] Cardinal Financial Corporation [Member]	Surplus [Member] Deferred Compensation Plan [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cardinal Financial Corporation [Member]	Retained Earnings [Member] Deferred Compensation Plan [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member] Cardinal Financial Corporation [Member]	Accumulated Other Comprehensive Income (Loss) [Member] Deferred Compensation Plan [Member]	Treasury Stock [Member]	Treasury Stock [Member] Cardinal Financial Corporation [Member]	Treasury Stock [Member] Deferred Compensation Plan [Member]
Balance at January 1, 2017 at Dec. 31, 2016	$ 2,235,747			$ 202,671			$ 1,205,778			$ 872,990			$ (44,717)			$ (975)
Beginning Balance, shares at Dec. 31, 2016				81,068,252
Comprehensive income:
Net income	132,606			$ 0			0			132,606			0			0
Other comprehensive income, net of tax:	10,554			0			0			0			10,554			0
Total comprehensive income, net of tax	143,160
Stock based compensation expense	2,589			0			2,589			0			0			0
Acquisition, Values		$ 975,254			$ 59,226			$ 916,028			$ 0			$ 0			$ 0
Acquisition, Shares					23,690,589
Purchase of treasury stock	(1)			0			0			0			0			(1)
Distribution of treasury stock for deferred compensation plan			$ 1			$ 0			$ 0			$ 0			$ 0			$ 1
Cash dividends	(96,040)						0			(96,040)			0			0
Grant of restricted stock	0			$ 224			(224)			0			0			0
Grant of restricted stock, shares				89,475
Forfeiture of restricted stock	0			$ 0			19			0			0			(19)
Common stock options exercised	$ 3,133			$ 409			2,724			0			0			0
Common stock options exercised, shares	163,562			163,562
Balance at September 30, 2017 at Sep. 30, 2017	$ 3,263,843			$ 262,530			$ 2,126,914			$ 909,556			$ (34,163)			$ (994)
Ending Balance, shares at Sep. 30, 2017				105,011,878,000

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Consolidated Statement of Changes in Shareholders' Equity (Unaudited) (Parenthetical)	9 Months Ended
	Sep. 30, 2017 $ / shares shares
Cash dividends per share | $ / shares	$ 0.99
Common stock options exercised, shares	163,562
Common Stock [Member]
Purchase of treasury stock, shares	82
Grant of restricted stock, shares	89,475
Forfeiture of restricted stock, shares	420
Common stock options exercised, shares	163,562
Deferred Compensation Plan [Member] | Common Stock [Member]
Distribution of treasury stock for deferred compensation plan, shares	28
Cardinal Financial Corporation [Member] | Common Stock [Member]
Acquisition, Shares	23,690,589

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Statement of Cash Flows [Abstract]
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 125,151	$ 125,948
INVESTING ACTIVITIES
Proceeds from maturities and calls of securities held to maturity	12,929	5,039
Proceeds from sales of securities available for sale	245,065	103,411
Proceeds from maturities and calls of securities available for sale	386,496	264,834
Purchases of securities available for sale	(630,061)	(385,030)
Purchases of bank premises and equipment	(11,115)	(4,150)
Proceeds from sales of bank premises and equipment	13	229
Purchases of other investment securities	(51,941)	(61,193)
Proceeds from sales and redemptions of other investment securities	14,393	47,285
Proceeds from the sales of OREO properties	4,908	15,435
Acquisition of subsidiaries, net of cash paid	44,531	29,330
Net change in loans	369,233	(111,723)
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	384,451	(96,533)
FINANCING ACTIVITIES
Cash dividends paid	(86,709)	(71,129)
Acquisition of treasury stock	(1)	(1)
Proceeds from exercise of stock options	3,296	4,668
Repayment of long-term Federal Home Loan Bank borrowings	(845,207)	(725,077)
Proceeds from issuance of long-term Federal Home Loan Bank borrowings	815,000	795,000
Distribution of treasury stock for deferred compensation plan	1	1
Changes in:
Deposits	(269,742)	265,183
Federal funds purchased, securities sold under agreements to repurchase and other short-term borrowings	186,270	(36,889)
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES	(197,092)	231,756
Increase in cash and cash equivalents	312,510	261,171
Cash and cash equivalents at beginning of year	1,434,527	857,335
Cash and cash equivalents at end of period	1,747,037	1,118,506
Noncash investing activities:
Transfers of loans to OREO	$ 3,829	$ 19,228

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Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2017

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 September 30, 2017 and 2016 and for the three-month and nine-month periods then ended have not been audited. The consolidated balance sheet as of December 31, 2016 has been extracted from the audited financial statements included in United’s 2016 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 2016 Annual Report of United on Form 10-K. To conform to the 2017 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 considers all of its principal business activities to be bank related. All significant intercompany accounts and transactions have been eliminated in the consolidated financial statements. Dollars are in thousands, except per share or unless otherwise noted.

New Accounting Standards

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 Entices 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; early adoption is permitted. 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 is not expected to 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 is effective for United on January 1, 2018, with early adoption permitted. 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 2017-04, “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 is effective for United on January 1, 2018, 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 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 is effective for United on January 1, 2018, 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 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.” United adopted ASU 2016-09 on January 1, 2017 utilizing the modified retrospective method. ASU 2016-09 changes certain aspects of accounting for share-based payments to employees. The new guidance, amongst other things, requires 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 $146 and $960 for the three and nine months ended September 30, 2017, respectively. 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. United elected to apply that change in cash flow classification on a retrospective basis, which resulted in an $2,083 increase to net cash from operating activities and a corresponding decrease to net cash from financing activities in the accompanying Consolidated Statement of Cash Flows for the first nine months of 2016. The recognition of excess tax benefits and deficiencies in the income statement was adopted prospectively. 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 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 and management is currently evaluating the impact this standard may have on the Company’s financial condition or results of operations.

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 is effective for United on January 1, 2018 and is not expected to 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. ASU 2014-09 will be effective for United on January 1, 2018. The Company intends to adopt the amendments of ASU 2014-09 beginning January 1, 2018 through the modified-retrospective transition method with a cumulative effect adjustment to opening retained earnings. The Company’s 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 and gains and losses from securities are not impacted by the standard. Thus far, we have identified revenue streams within the scope of the guidance and analyzed those revenue streams to determine the impact of the standard. We have reviewed and evaluated a number of revenue contracts to determine the impact the new recognition methods will have on revenue recognition. Based on this review, ASU 2014-09 may require the Company to change how it recognizes certain recurring revenue streams related to noninterest income including fees from trust and brokerage services. Although we currently do not expect this standard to have a material impact on the timing or amount of revenue, we are still assessing the potential impact on the Company’s consolidated financial statements.

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Mergers and Acquisitions

9 Months Ended

Sep. 30, 2017

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 $622,513, $28,723 and $1,230, 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 September 30, 2017, the discounts on leases and trust preferred issuances had an average estimated remaining life of 6.00 years and 16.97 years, respectively, and the premiums on the interest-bearing deposits and the FHLB advances each had an average estimated remaining life of 5.00 years and 4.81 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 September 30, 2017. The estimated fair values of the acquired assets and assumed liabilities, including identifiable intangible assets are preliminary as of September 30, 2017 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 valuation 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		28,723
George Mason trade name intangible		1,230
Other assets		135,383
Total identifiable assets	$	4,069,818
Identifiable liabilities:
Deposits	$	3,349,812
Short-term borrowings		96,215
Long-term borrowings		220,119
Unfavorable lease liability		2,281
Other liabilities		48,650
Total identifiable liabilities		3,717,077
Preliminary fair value of net assets acquired including identifiable intangible assets		352,741
Preliminary resulting goodwill	$	622,513

The operating results of United for the nine months ended September 30, 2017 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 $157,326 in total revenues, which represents net interest income plus other income, and $81,817 in net income from the period from the Cardinal Acquisition Date to September 30, 2017. These amounts are included in United’s consolidated financial statements as of and for the nine months ended September 30, 2017. 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 nine months ended September 30, 2017 and 2016, as if the Cardinal merger had occurred on January 1, 2017 and 2016, respectively. 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 2017 and 2016 that may not have been necessary had the acquired loans been recorded at fair value as of the beginning of 2017 and 2016. 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 Nine Months Ended September 30
	2017		2016
Total Revenues (1)	$	573,790	$	585,223
Net Income		136,104		160,731

⁽¹⁾  Represents net interest income plus other income

Bank of Georgetown

After the close of business on June 3, 2016 (BOG Acquisition Date), United acquired 100% of the outstanding common stock of Bank of Georgetown, a privately held community bank headquartered in Washington, D.C. With this transaction, United continues to expand its existing footprint in the D.C. Metro Region. The results of operations of Bank of Georgetown are included in the consolidated results of operations from the BOG Acquisition Date.

At consummation, Bank of Georgetown had assets of $1,278,837, loans of $999,773, and deposits of $971,369. The transaction was accounted for under the acquisition method of accounting and accordingly, assets acquired, liabilities assumed and consideration exchanged were recorded at estimated fair value on the BOG Acquisition Date.

The aggregate purchase price was $264,505, including common stock valued at $253,799, stock options assumed valued at $10,696, and cash paid for fractional shares of $10. The number of shares issued in the transaction was 6,527,746, which were valued based on the closing market price of $38.88 for United’s common shares on June 3, 2016. The purchase price has been allocated to the identifiable tangible and intangible assets resulting in additions to goodwill and core deposit intangibles of $152,845 and $9,058, respectively. The core deposit intangibles are being amortized over ten years.

Because the consideration paid was greater than the net fair value of the acquired assets and liabilities, the Company recorded goodwill as part of the acquisition. None of the goodwill from the Bank of Georgetown 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 the Bank of Georgetown. As a result of the merger, United recorded fair value discounts of $43,072 on the loans acquired and $1,550 on leasehold improvements, respectively, and premiums on interest-bearing deposits acquired of $316 and a premium on long-term FHLB advances of $2,659. The remaining discount and premium amounts are being amortized or accreted on an accelerated basis over each asset’s or liability’s estimated remaining life at the time of acquisition. At September 30, 2017, the premium on the interest-bearing deposits and the FHLB advances had an estimated remaining life of 0.33 years and 7.92 years, respectively. United assumed approximately $300 of liabilities to provide severance benefits to terminated employees of Bank of Georgetown, which has no remaining balance as of September 30, 2017. The measurement period has closed and the estimated fair values of the acquired assets and assumed liabilities, including identifiable intangible assets were considered final as of June 30, 2017.

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 valuation 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 Bank of Georgetown’s previously established allowance for loan losses.

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

	June 3, 2016
Contractually required principal and interest at acquisition	$	1,275,398
Contractual cash flows not expected to be collected		(33,980	)
Expected cash flows at acquisition		1,241,418
Interest component of expected cash flows		(274,548	)
Basis in acquired loans at acquisition – estimated fair value	$	966,870

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 $138,125, $117,564, and $95,570, respectively.

The consideration paid for Bank of Georgetown’s common equity and the fair value of acquired identifiable assets and liabilities assumed as of the BOG Acquisition Date were as follows:

Purchase price:
Value of common shares issued (6,527,746 shares)	$	253,799
Fair value of stock options assumed		10,696
Cash for fractional shares		10
Total purchase price		264,505
Identifiable assets:
Cash and cash equivalents		29,340
Investment securities		219,783
Loans		966,870
Premises and equipment		5,574
Core deposit intangibles		9,058
Other assets		31,605
Total identifiable assets	$	1,262,230
Identifiable liabilities:
Deposits	$	971,685
Short-term borrowings		101,021
Long-term borrowings		67,659
Other liabilities		11,532
Total identifiable liabilities		1,151,897
Fair value of net assets acquired including identifiable intangible assets		110,333
Resulting goodwill	$	154,172

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Investment Securities

9 Months Ended

Sep. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Investment Securities

3. INVESTMENT SECURITIES

Securities held for indefinite periods of time and all marketable equity securities 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.

	September 30, 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	$	115,224	$	864	$	222	$	115,866	$	0
State and political subdivisions		305,096		2,567		2,522		305,141		0
Residential mortgage-backed securities
Agency		715,003		3,819		4,122		714,700		0
Non-agency		5,259		587		0		5,846		86
Commercial mortgage-backed securities
Agency		420,115		2,081		1,404		420,792		0
Asset-backed securities		13,422		10		3		13,429		0
Trust preferred collateralized debt obligations		38,186		317		6,844		31,659		20,770
Single issue trust preferred securities		13,404		404		1,341		12,467		0
Other corporate securities		18,998		256		0		19,254		0
Marketable equity securities		9,950		541		11		10,480		0
Total	$	1,654,657	$	11,446	$	16,469	$	1,649,634	$	20,856

	December 31, 2016
			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	$	95,247	$	698	$	159	$	95,786	$	0
State and political subdivisions		196,350		1,364		4,902		192,812		0
Residential mortgage-backed securities
Agency		585,208		3,999		5,111		584,096		0
Non-agency		6,629		426		12		7,043		86
Commercial mortgage-backed securities
Agency		304,635		1,948		1,242		305,341		0
Asset-backed securities		217		0		0		217		0
Trust preferred collateralized debt obligations		48,558		729		15,735		33,552		25,952
Single issue trust preferred securities		13,363		284		2,170		11,477		0
Other corporate securities		14,996		66		0		15,062		0
Marketable equity securities		12,436		1,398		6		13,828		0
Total	$	1,277,639	$	10,912	$	29,337	$	1,259,214	$	26,038

(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 September 30, 2017 and December 31, 2016.

	Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
September 30, 2017
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	27,053	$	128	$	19,932	$	94
State and political subdivisions		83,310		896		38,004		1,626
Residential mortgage-backed securities
Agency		351,936		3,410		31,690		712
Non-agency		0		0		0		0
Commercial mortgage-backed securities
Agency		228,307		1,218		12,272		186
Asset-backed securities		6,760		3		0		0
Trust preferred collateralized debt obligations		0		0		29,544		6,844
Single issue trust preferred securities		0		0		4,365		1,341
Marketable equity securities		0		0		352		11
Total	$	697,366	$	5,655	$	136,159	$	10,814

	Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
December 31, 2016
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	24,101	$	159	$	0	$	0
State and political subdivisions		116,300		4,902		0		0
Residential mortgage-backed securities
Agency		309,376		5,111		0		0
Non-agency		0		0		218		12
Commercial mortgage-backed securities
Agency		162,479		1,242		0		0
Asset-backed securities		0		0		0		0
Trust preferred collateralized debt obligations		0		0		28,579		15,735
Single issue trust preferred securities		0		0		8,185		2,170
Marketable equity securities		357		6		0		0
Total	$	612,613	$	11,420	$	36,982	$	17,917

Marketable 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 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 September 30				Nine Months Ended September 30
	2017		2016		2017		2016
Proceeds from sales and calls	$	64,257	$	174,015	$	631,561	$	368,246
Gross realized gains		1,781		3		2,840		259
Gross realized losses		1,314		1		1,396		7

At September 30, 2017, gross unrealized losses on available for sale securities were $16,469 on 375 securities of a total portfolio of 822 available for sale securities. Securities in an unrealized loss position at September 30, 2017 consisted primarily of pooled trust preferred collateralized debt obligations (“Trup Cdos”), single issue trust preferred securities and agency residential mortgage-backed securities. The Trup Cdos and the single issue trust preferred securities relate mainly to securities of financial institutions. The state and political subdivisions securities relate to securities issued by various municipalities. The agency residential mortgage-backed securities relate to 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 $305,096 at September 30, 2017. As of September 30, 2017, approximately 75% 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 September 30, 2017. 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 September 30, 2017.

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 $1,135,118 at September 30, 2017. Of the $1,135,118 amount, $420,115 was related to agency commercial mortgage-backed securities and $715,003 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 September 30, 2017.

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 $5,259 at September 30, 2017. Of the $5,259 amount, $627 was rated above investment grade and $4,632 was rated below investment grade. Approximately 18% of the portfolio includes collateral that was originated during the year of 2005 or before. The remaining 82% includes collateral that was originated in the years of 2006 and 2007. 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 September 30, 2017.

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 third quarter of 2017, 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 available for sale single issue trust preferred securities’ ratings ranged from a low of Ba1 to a high of BBB-. The amortized cost of available for sale single issue trust preferred securities as of September 30, 2017 consisted of $3,017 in investment grade bonds, $4,680 in split-rated bonds and $5,707 in unrated bonds. All of the unrated bonds were in an unrealized loss position for twelve months or longer as of September 30, 2017.

Trust preferred collateralized debt obligations (Trup Cdos)

In order to determine how and when the Company recognizes OTTI, 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 September 30, 2017, the Company has determined that it does not intend to sell any pooled trust preferred security 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. The Company discounts the security-specific cash flow projection at the security-specific interest rate and compares the present value to the amortized cost. Management’s cash flow analysis was performed for each security and considered the current deferrals and defaults within the underlying collateral, the likelihood that current deferrals would cure or ultimately default, potential future deferrals and defaults, potential prepayments, cash reserves, excess interest spread, credit analysis of the underlying collateral and the priority of payments in the cash flow structure. The underlying collateral analysis for each issuer took into consideration multiple factors including capital adequacy, earnings trends and asset quality. After completing its analysis of estimated cash flows, management determined that none of the Trup Cdos experienced an adverse change in cash flows during the third quarter of 2017, as the expected discounted cash flows from these particular securities were greater than or equal to the discounted cash flows originally expected at purchase or from the previous date of other-than-temporary impairment (cash flows are discounted at the contractual coupon rate for purposes of assessing OTTI).

There was no credit-related other-than-temporary impairment recognized in earnings for the third quarter of 2017 related to these securities. The balance of noncredit-related other-than-temporary impairment recognized on United’s Trup Cdos portfolio was $20,770 at September 30, 2017.

The following is a summary of the available for sale Trup Cdos as of September 30, 2017:

								Amortized Cost
Class	Amortized Cost		Fair Value		Unrealized Loss			Investment Grade		Split Rated		Below Investment Grade
Senior – Bank	$	5,208	$	5,287	$	(79	)	$	3,410	$	0	$	1,798
Mezzanine – Bank (now in senior position)		6,428		5,518		910			0		0		6,428
Mezzanine – Bank		22,656		17,918		4,738			0		0		22,656
Mezzanine – Bank & Insurance (combination)		3,894		2,936		958			0		0		3,894
Totals	$	38,186	$	31,659	$	6,527		$	3,410	$	0	$	34,776

While a large difference remains between the fair value and amortized cost, the Company believes the remaining unrealized losses are related to the illiquid market for Trup Cdos rather than an adverse change in expected cash flows. The expected future cash flow substantiates the return of the remaining amortized cost of the security. The Company believes the following evidence supports the position that the remaining unrealized loss is related to the illiquid market for Trup Cdos:

• The market for new issuance of Trup Cdos was robust from 2000 to 2007 with an estimated $60 billion in new issuance. The new market issuances came to an abrupt halt in 2007.

• The secondary market for Trup Cdos ultimately became illiquid and although the market has improved, trading activity remains limited on these securities. In making this determination, the Company holds discussions with institutional traders to identify trends in the number and type of transactions related to the Trup Cdos.

• The presence of a below-investment grade rating severely limits the pool of available buyers and contributes to the illiquidity of the market.

• Trup Cdos have a more complex structure than most debt instruments, making projections of tranche returns difficult for non-specialists in the product. Deferral features available to the underlying issuers within each pool are unique to these securities. Additionally, it can be difficult for market participants to predict whether deferrals will ultimately cure or ultimately default. Due to the lack of transparency, market participants will require a higher risk premium, thus resulting in higher required discount rates.

• The variability of cash flows at the time the securities were originated was expected to be very limited. Due to the financial crisis, Trup Cdos have experienced more substantive variability of cash flows compared to expectations, resulting in a higher risk premium when evaluating discount rates.

• The limited, yet relevant, observable inputs indicate that market yield requirements for Trup Cdos, on a credit-adjusted basis, remained very high relative to discount rates at purchase and compared to other similarly rated debt securities.

Overall, the Company believes the lack of new issuances, illiquid secondary market, limited pool of buyers, below investment grade ratings, and complex structures are the key drivers of the remaining unrealized losses in the Company’s Trup Cdos and the robust expected cash flow analysis substantiates the return of the remaining amortized cost under ASC topic 320.

Management also considered the ratings of the Company’s bonds in its portfolio and the extent of downgrades in United’s impairment analysis. However, management considered it imperative to independently perform its own credit analysis based on cash flows as described. The ratings of the investment grade Trup Cdos in the table above range from a low of AA to a high of Aaa. The below investment grade Trup Cdos range from a low of C to a high of Ba2.

On the Trup Cdos that have not been deemed to be other-than-temporarily impaired, the collateralization ratios range from a low of 105.4% to a high of 414.5%, with a median of 260.0%, and a weighted average of 283.8%. The collateralization ratio is defined as the current performing collateral in a security, divided by the current balance of the specific tranche the Company owns, plus any debt which is senior or pari passu with the Company’s security’s priority level. Performing collateral excludes the balance of any issuer that has either defaulted or has deferred its interest payment. It is not uncommon for the collateralization of a security that is not other-than-temporarily impaired to be less than 100% due to the excess spread built into the securitization structure.

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 September 30, 2017 is other-than-temporarily impaired. For these securities, United believes the decline in value resulted from changes in market interest rates, credit spreads and liquidity, not a change in the expected contractual cash flows. Based on a review of each of the securities in the investment portfolio, management concluded that it expected to recover the amortized cost basis of the investment in such securities.

Equity securities

The amortized cost of United’s equity securities was $9,950 at September 30, 2017. For equity 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 equity securities were other-than-temporarily impaired at September 30, 2017.

Other investment securities (cost method)

During the third quarter of 2017, United also evaluated all of its cost method investments to determine if certain events or changes in circumstances during the third quarter of 2017 had a significant adverse effect on the fair value of any of its cost method securities. United determined that there were no events or changes in circumstances during the third quarter which would have an adverse effect on the fair value of any of its cost method securities. Therefore, no impairment was recorded.

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 September 30					Nine Months Ended September 30
	2017			2016		2017			2016
Balance of cumulative credit losses at beginning of period	$	22,162		$	22,162	$	22,162		$	23,773
Additional credit losses on securities for which OTTI was previously recognized		0			0		0			33
Reductions during the period for securities for which the amount previously recognized in other comprehensive income was recognized in earnings		(4,102	)		0		(4,102	)		(1,644	)
Balance of cumulative credit losses at end of period	$	18,060		$	22,162	$	18,060		$	22,162

The amortized cost and estimated fair value of securities available for sale at September 30, 2017 and December 31, 2016 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.

	September 30, 2017				December 31, 2016
			Estimated				Estimated
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	57,720	$	57,622	$	53,286	$	53,330
Due after one year through five years		370,020		371,007		296,181		297,385
Due after five years through ten years		342,176		343,326		213,094		213,791
Due after ten years		874,791		867,199		702,642		680,880
Marketable equity securities		9,950		10,480		12,436		13,828
Total	$	1,654,657	$	1,649,634	$	1,277,639	$	1,259,214

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

	September 30, 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	$	5,215	$	400	$	0	$	5,615
State and political subdivisions		5,674		12		0		5,686
Residential mortgage-backed securities
Agency		26		4		0		30
Single issue trust preferred securities		9,400		0		842		8,558
Other corporate securities		20		0		0		20
Total	$	20,335	$	416	$	842	$	19,909

	December 31, 2016
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	5,295	$	570	$	0	$	5,865
State and political subdivisions		8,598		17		0		8,615
Residential mortgage-backed securities
Agency		30		5		0		35
Single issue trust preferred securities		19,315		0		2,672		16,643
Other corporate securities		20		0		0		20
Total	$	33,258	$	592	$	2,672	$	31,178

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 September 30, 2017, the Company’s largest held-to-maturity single-issue trust preferred exposure was to SunTrust Bank ($7,424). The two held-to-maturity single-issue trust preferred exposures with at least one rating below investment grade included SunTrust Bank ($7,424) 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 third quarter and first nine months of 2017 and 2016.

The amortized cost and estimated fair value of debt securities held to maturity at September 30, 2017 and December 31, 2016 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.

	September 30, 2017				December 31, 2016
			Estimated				Estimated
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	0	$	0	$	1,040	$	1,041
Due after one year through five years		9,189		9,600		8,268		8,850
Due after five years through ten years		5,726		5,382		3,585		3,589
Due after ten years		5,420		4,927		20,365		17,698
Total	$	20,335	$	19,909	$	33,258	$	31,178

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 $1,312,813 and $1,137,408 at September 30, 2017 and December 31, 2016, respectively.

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Loans

9 Months Ended

Sep. 30, 2017

Receivables [Abstract]

Loans

4. LOANS

Major classes of loans are as follows:

	September 30, 2017		December 31, 2016
Commercial, financial and agricultural:
Owner-occupied commercial real estate	$	1,364,757	$	1,049,885
Nonowner-occupied commercial real estate		4,686,183		3,425,453
Other commercial loans		1,757,741		1,613,437
Total commercial, financial & agricultural		7,808,681		6,088,775
Residential real estate		3,050,868		2,403,437
Construction & land development		1,599,632		1,255,738
Consumer:
Bankcard		13,775		14,187
Other consumer		683,898		594,582
Total gross loans	$	13,156,854	$	10,356,719

The table above does not include loans held for sale of $315,031 and $8,445 at September 30, 2017 and December 31, 2016, respectively. The increase was due to the acquisition of Cardinal and it mortgage banking subsidiary, George Mason. 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 $227,754 or 1.73% of total gross loans at September 30, 2017 and $171,596 or 1.66% of total gross loans at December 31, 2016. The contractual principal in these acquired impaired loans was $310,609 and $231,096 at September 30, 2017 and December 31, 2016, 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 nine months of 2017 follows:

Accretable yield at the beginning of the period	$	29,165
Accretion (including cash recoveries)		(11,312	)
Additions		17,444
Net reclassifications to accretable from non-accretable		2,727
Disposals (including maturities, foreclosures, and charge-offs)		(2,367	)
Accretable yield at the end of the period	$	35,657

United’s subsidiary banks have made loans to the directors and officers of United and its subsidiaries, and to their affiliates. The aggregate dollar amount of these loans was $364,774 and $255,476 at September 30, 2017 and December 31, 2016, respectively.

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Credit Quality

9 Months Ended

Sep. 30, 2017

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 September 30, 2017, United had TDRs of $46,132 as compared to $21,152 as of December 31, 2016. Of the $46,132 aggregate balance of TDRs at September 30, 2017, $29,717 was on nonaccrual status and included in the “Loans on Nonaccrual Status” on the following pages. Of the $21,152 aggregate balance of TDRs at December 31, 2016, $11,106 was on nonaccrual status and included in the “Loans on Nonaccrual Status” on the following page. As of September 30, 2017, there were no commitments to lend additional funds to debtors owing receivables whose terms have been modified in TDRs. At September 30, 2017, United had restructured loans in the amount of $2,043 that were modified by a reduction in the interest rate, $4,507 that were modified by a combination of a reduction in the interest rate and the principal and $39,582 that was 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.

No loans were restructured during the three months ended September 30, 2017. The following table sets forth United’s troubled debt restructurings that were restructured during the three months ended September 30, 2016, segregated by class of loans:

	Troubled Debt Restructurings
	For the Three Months Ended
	September 30, 2016
	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		1		110		110
Residential real estate		0		0		0
Construction & land development		0		0		0
Consumer:
Bankcard		0		0		0
Other consumer		0		0		0
Total		1	$	110	$	110

The following table sets forth United’s troubled debt restructurings that were restructured during the nine months ended September 30, 2017 and 2016, segregated by class of loans:

	Troubled Debt Restructurings
	For the Nine Months Ended
	September 30, 2017						September 30, 2016
	Number of Contracts		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment		Number of Contracts		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment
Commercial real estate:
Owner-occupied		1	$	5,333	$	5,333		1	$	1,190	$	1,184
Nonowner-occupied		0		0		0		0		0		0
Other commercial		8		24,102		22,291		5		2,250		1,725
Residential real estate		0		0		0		1		1,400		1,400
Construction & land development		1		1,456		1,400		0		0		0
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		0		0		0		0		0		0
Total		10	$	30,891	$	29,024		7	$	4,840	$	4,309

During the first nine months of 2017, $29,024 of restructured loans were modified by a change in terms. During the third quarter and first nine months of 2016, $110 and $2,909, respectively, of restructured loans were modified by a change in loan terms. In addition, during the first nine months of 2016, $1,400 of restructured loans were modified by a combination of a reduction in the interest rate and an extension of the maturity date. 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.

The following table presents troubled debt restructurings, by class of loan, that had charge-offs during the three months and nine months ended September 30, 2017.

	Three Months Ended September 30, 2017				Nine Months Ended September 30, 2017
(In thousands)	Number of Contracts		Recorded Investment		Number of Contracts		Recorded Investment
Troubled Debt Restructurings
Commercial real estate:
Owner-occupied		0	$	0		0	$	0
Nonowner-occupied		0		0		0		0
Other commercial		1		1,495		1		1,495
Residential real estate		0		0		0		0
Construction & land development		0		0		0		0
Consumer:
Bankcard		0		0		0		0
Other consumer		0		0		0		0
Total		1	$	1,495		1	$	1,495

No loans restructured during the twelve-month period ended September 30, 2016 subsequently defaulted, resulting in a principal charge-off during the three months and first nine months ended September 30, 2016.

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 September 30, 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	$	9,704	$	6,912	$	16,616	$	1,348,141	$	1,364,757	$	0
Nonowner-occupied		7,686		20,797		28,483		4,657,700		4,686,183		0
Other commercial		13,589		79,342		92,931		1,664,810		1,757,741		802
Residential real estate		33,654		25,564		59,218		2,991,650		3,050,868		5,298
Construction & land development		3,351		17,852		21,203		1,578,429		1,599,632		14,828
Consumer:
Bankcard		385		210		595		13,180		13,775		210
Other consumer		8,087		1,305		9,392		674,506		683,898		1,111
Total	$	76,456	$	151,982	$	228,438	$	12,928,416	$	13,156,854	$	22,249

(1) Other includes loans with a recorded investment of $227,754 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, 2016

(In thousands)	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	$	5,850	$	3,981	$	9,831	$	1,040,054	$	1,049,885	$	94
Nonowner-occupied		9,288		20,847		30,135		3,395,318		3,425,453		172
Other commercial		15,273		42,766		58,039		1,555,398		1,613,437		2,518
Residential real estate		29,976		25,991		55,967		2,347,470		2,403,437		4,216
Construction & land development		3,809		7,779		11,588		1,244,150		1,255,738		33
Consumer:
Bankcard		422		141		563		13,624		14,187		141
Other consumer		10,015		1,712		11,727		582,855		594,582		1,412
Total	$	74,633	$	103,217	$	177,850	$	10,178,869	$	10,356,719	$	8,586

(1) Other includes loans with a recorded investment of $171,596 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

	September 30, 2017		December 31, 2016
Commercial real estate:
Owner-occupied	$	6,912	$	3,887
Nonowner-occupied		20,797		20,675
Other commercial		78,540		40,248
Residential real estate		20,266		21,775
Construction & land development		3,024		7,746
Consumer:
Bankcard		0		0
Other consumer		194		300
Total	$	129,733	$	94,631

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 September 30, 2017
	Commercial Real Estate				Other Commercial		Construction & Land Development
	Owner- occupied		Nonowner- occupied
Grade:
Pass	$	1,282,657	$	4,544,799	$	1,611,250	$	1,498,656
Special mention		23,827		44,080		47,450		19,872
Substandard		58,273		97,304		98,933		81,104
Doubtful		0		0		108		0
Total	$	1,364,757	$	4,686,183	$	1,757,741	$	1,599,632
As of December 31, 2016
	Commercial Real Estate				Other Commercial		Construction & Land Development
	Owner- occupied		Nonowner- occupied
Grade:
Pass	$	963,503	$	3,284,497	$	1,463,797	$	1,126,742
Special mention		20,490		36,462		26,537		52,327
Substandard		65,892		104,494		122,893		76,669
Doubtful		0		0		210		0
Total	$	1,049,885	$	3,425,453	$	1,613,437	$	1,255,738

Credit Quality Indicators

Consumer Credit Exposure

As of September 30, 2017
	Residential Real Estate		Bankcard		Other Consumer
Grade:
Pass	$	2,999,614	$	13,180	$	674,447
Special mention		18,953		385		8,134
Substandard		32,301		210		1,317
Doubtful		0		0		0
Total	$	3,050,868	$	13,775	$	683,898
As of December 31, 2016
	Residential Real Estate		Bankcard		Other Consumer
Grade:
Pass	$	2,348,017	$	13,624	$	582,704
Special mention		18,240		422		10,132
Substandard		36,995		141		1,746
Doubtful		185		0		0
Total	$	2,403,437	$	14,187	$	594,582

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
	September 30, 2017						December 31, 2016
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	64,592	$	65,355	$	0	$	46,575	$	47,108	$	0
Nonowner-occupied		143,100		143,552		0		92,654		93,104		0
Other commercial		55,022		58,785		0		46,064		48,308		0
Residential real estate		20,873		22,546		0		22,747		24,404		0
Construction & land development		30,959		33,225		0		19,863		21,746		0
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		16		16		0		36		36		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	8,220	$	8,220	$	923	$	1,787	$	2,082	$	815
Nonowner-occupied		12,182		12,182		1,786		17,938		17,938		2,524
Other commercial		70,344		80,415		21,890		43,774		46,188		13,441
Residential real estate		13,743		15,082		1,659		12,066		12,801		3,431
Construction & land development		1,411		5,910		488		4,940		7,899		3,206
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		0		0		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	72,812	$	73,575	$	923	$	48,362	$	49,190	$	815
Nonowner-occupied		155,282		155,734		1,786		110,592		111,042		2,524
Other commercial		125,366		139,200		21,890		89,838		94,496		13,441
Residential real estate		34,616		37,628		1,659		34,813		37,205		3,431
Construction & land development		32,370		39,135		488		24,803		29,645		3,206
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		16		16		0		36		36		0

	Impaired Loans
	For the Three Months Ended
	September 30, 2017				September 30, 2016
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	58,980	$	376	$	38,199	$	531
Nonowner-occupied		108,959		312		71,154		321
Other commercial		57,317		306		45,028		1,221
Residential real estate		19,553		74		27,214		170
Construction & land development		23,846		552		28,730		46
Consumer:
Bankcard		0		0		0		0
Other consumer		25		0		35		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	11,624	$	131	$	3,353	$	36
Nonowner-occupied		13,408		89		14,046		122
Other commercial		72,835		216		33,195		42
Residential real estate		15,225		16		8,579		52
Construction & land development		1,641		21		8,591		56
Consumer:
Bankcard		0		0		0		0
Other consumer		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	70,604	$	507	$	41,552	$	567
Nonowner-occupied		122,367		401		85,200		443
Other commercial		130,152		522		78,223		1,263
Residential real estate		34,778		90		35,793		222
Construction & land development		25,487		573		37,321		102
Consumer:
Bankcard		0		0		0		0
Other consumer		25		0		35		0

	Impaired Loans
	For the Nine Months Ended
	September 30, 2017				September 30, 2016
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	55,506	$	1,011	$	34,030	$	715
Nonowner-occupied		93,254		811		70,081		714
Other commercial		55,891		895		37,805		1,446
Residential real estate		19,634		206		26,737		406
Construction & land development		20,706		563		26,559		112
Consumer:
Bankcard		0		0		0		0
Other consumer		29		0		32		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	9,392	$	424	$	3,603	$	92
Nonowner-occupied		14,595		363		10,416		360
Other commercial		65,142		1,410		34,755		270
Residential real estate		15,186		89		9,129		77
Construction & land development		2,872		64		10,300		146
Consumer:
Bankcard		0		0		0		0
Other consumer		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	64,898	$	1,435	$	37,633	$	807
Nonowner-occupied		107,849		1,174		80,497		1,074
Other commercial		121,033		2,305		72,560		1,716
Residential real estate		34,820		295		35,866		483
Construction & land development		23,578		627		36,859		258
Consumer:
Bankcard		0		0		0		0
Other consumer		29		0		32		0

At September 30, 2017 and December 31, 2016, other real estate owned (“OREO”) included in other assets in the Consolidated Balance Sheets was $26,826 and $31,510, 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 September 30, 2017 and December 31, 2016, the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process was $116 and $660, respectively.

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Allowance for Credit Losses

9 Months Ended

Sep. 30, 2017

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 and nine months ended September 30, 2017, the re-estimation of the expected cash flows related to loans acquired that have evidence of deterioration of credit quality resulted in a reversal of provision for loan losses expense of $43 and $415, respectively, as compared to a reversal of provision for loan losses expense of $1,130 and provision for loan losses expense of $160, respectively, for the three and nine months ended September 30, 2016.

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 $804 and $1,044 at September 30, 2017 and December 31, 2016, 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

For the Three Months Ended September 30, 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	$	5,129	$	7,099		$	37,287	$	12,479		$	7,514	$	2,715	$	760		$	72,983
Charge-offs		518		0			4,854		299			54		632		0			6,357
Recoveries		397		168			156		60			89		151		0			1,021
Provision		230		(472	)		8,782		(1,385	)		452		281		(609	)		7,279
Ending balance	$	5,238	$	6,795		$	41,371	$	10,855		$	8,001	$	2,515	$	151		$	74,926

Allowance for Loan Losses and Carrying Amount of Loans

For the Nine Months Ended September 30, 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		1,433			295		14,883		2,331			2,576			2,046		0			23,564
Recoveries		1,590			198		821		352			705			624		0			4,290
Provision		(192	)		9		22,346		(936	)		(734	)		1,132		(196	)		21,429
Ending balance	$	5,238		$	6,795	$	41,371	$	10,855		$	8,001		$	2,515	$	151		$	74,926
Ending Balance: individually evaluated for impairment	$	923		$	1,786	$	21,890	$	1,659		$	488		$	0	$	0		$	26,746
Ending Balance: collectively evaluated for impairment	$	4,315		$	5,009	$	19,481	$	9,196		$	7,513		$	2,515	$	151		$	48,180
Ending Balance: loans acquired with deteriorated credit quality	$	0		$	0	$	0	$	0		$	0		$	0	$	0		$	0
Financing receivables:
Ending balance	$	1,364,757		$	4,686,183	$	1,757,741	$	3,050,868		$	1,599,632		$	697,673	$	0		$	13,156,854
Ending Balance: individually evaluated for impairment	$	32,888		$	25,220	$	89,559	$	15,574		$	16,879		$	0	$	0		$	180,120
Ending Balance: collectively evaluated for impairment	$	1,297,668		$	4,537,792	$	1,636,037	$	3,021,173		$	1,558,653		$	697,657	$	0		$	12,748,980
Ending Balance: loans acquired with deteriorated credit quality	$	34,201		$	123,171	$	32,145	$	14,121		$	24,100		$	16	$	0		$	227,754

Allowance for Loan Losses and Carrying Amount of Loans

For the Year Ended December 31, 2016

	Commercial Real Estate				Other Commercial		Residential Real Estate		Construction			Consumer		Allowance for		Total
	Owner- occupied		Nonowner- occupied						& Land Development					Estimated Imprecision
Allowance for Loan Losses:
Beginning balance	$	3,637	$	5,309	$	31,328	$	15,148	$	18,205		$	1,995	$	104	$	75,726
Charge-offs		5,281		419		20,430		4,597		2,659			2,794		0		36,180
Recoveries		3,071		675		3,452		639		433			446		0		8,716
Provision		3,846		1,318		18,737		2,580		(5,373	)		3,158		243		24,509
Ending balance	$	5,273	$	6,883	$	33,087	$	13,770	$	10,606		$	2,805	$	347	$	72,771
Ending Balance: individually evaluated for impairment	$	815	$	2,524	$	13,441	$	3,431	$	3,206		$	0	$	0	$	23,417
Ending Balance: collectively evaluated for impairment	$	4,458	$	4,359	$	19,646	$	10,339	$	7,400		$	2,805	$	347	$	49,354
Ending Balance: loans acquired with deteriorated credit quality	$	0	$	0	$	0	$	0	$	0		$	0	$	0	$	0
Financing receivables:
Ending balance	$	1,049,885	$	3,425,453	$	1,613,437	$	2,403,437	$	1,255,738		$	608,769	$	0	$	10,356,719
Ending Balance: individually evaluated for impairment	$	18,976	$	26,835	$	56,091	$	14,766	$	8,152		$	0	$	0	$	124,820
Ending Balance: collectively evaluated for impairment	$	1,005,999	$	3,323,117	$	1,527,479	$	2,373,969	$	1,221,006		$	608,733	$	0	$	10,060,303
Ending Balance: loans acquired with deteriorated credit quality	$	24,910	$	75,501	$	29,867	$	14,702	$	26,580		$	36	$	0	$	171,596

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Intangible Assets

9 Months Ended

Sep. 30, 2017

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:

	September 30, 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	$	98,358	($	52,062	)	$	0	($	0	)	$	98,358	($	52,062	)
Non-amortized intangible assets:
George Mason trade name	$	0				$	1,230				$	1,230
Goodwill not subject to amortization	$	1,466,152				$	21,455				$	1,487,607

	December 31, 2016
	Community Banking					Total
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Core deposit intangible assets	$	69,635	($	46,681	)	$	69,635	($	46,681	)
Goodwill not subject to amortization	$	863,767				$	863,767

The following table provides a reconciliation of goodwill:

	Community Banking		Mortgage Banking		Total
Goodwill at December 31, 2016	$	863,767	$	0	$	863,767
Addition to goodwill from Bank of Georgetown acquisition		1,327		0		1,327
Preliminary addition to goodwill from Cardinal acquisition		601,058		21,455		622,513
Goodwill at September 30, 2017	$	1,466,152	$	21,455	$	1,487,607

United incurred amortization expense on intangible assets of $2,240 and $5,381 for the quarter and nine months ended September 30, 2017, respectively, and $1,122 and $2,786 for the quarter and nine months ended September 30, 2016, respectively.

The following table sets forth the anticipated amortization expense for intangible assets for the years subsequent to 2016:

Year	Amount
2017	$	7,772
2018		8,039
2019		7,015
2020		6,309
2021 and thereafter		22,542

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Short-Term Borrowings

9 Months Ended

Sep. 30, 2017

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 $264,000. 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 September 30, 2017, federal funds purchased were $25,800 while total securities sold under agreements to repurchase (“REPOs”) were $316,236. Included in the $316,236 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 September 30, 2017, United had no outstanding balance under this line of credit.

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Long-Term Borrowings

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Long-Term Borrowings

9. LONG-TERM BORROWINGS    

United’s subsidiary banks are members 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 September 30, 2017, United had an unused borrowing amount of approximately $3,724,772 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 September 30, 2017, $1,272,115 of FHLB advances with a weighted-average interest rate of 1.43% are scheduled to mature within the next eight years. Overnight funds of $200,000 with an interest rate of 1.27% are included in the $1,272,115 above at September 30, 2017.

The scheduled maturities of these FHLB borrowings are as follows:

Year	Amount
2017	$	815,000
2018		131,776
2019		187,809
2020		42,247
2021 and thereafter		95,283
Total	$	1,272,115

At September 30, 2017, United had a total of fifteen 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 September 30, 2017 and December 31, 2016, the outstanding balance of the Debentures was $242,131 and $224,319, 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.

However, with the acquisition of Cardinal on April 21, 2017, United’s total consolidated assets now exceeds $15 billion. As a result, United’s Trust Preferred Securities are no longer included in United’s Tier 1 capital but are included as a component of Tier 2 capital on a permanent basis without phase-out. This new requirement was reflected in United’s regulatory capital amounts for June 30, 2017, the first reporting period after the Cardinal acquisition.

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Commitments and Contingent Liabilities

9 Months Ended

Sep. 30, 2017

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 $4,118,868 and $2,823,396 of loan commitments outstanding as of September 30, 2017 and December 31, 2016, respectively, approximately half of which expire within one year. Included in the September 30, 2017 amount are commitments to extend credit of $407,610 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 September 30, 2017, United had no outstanding commercial letters of credit and $9 as of December 31, 2016. A standby letter of credit is generally contingent upon the failure of a customer to perform according to the terms of an underlying contract with a third party. United has issued standby letters of credit of $148,742 and $121,584 as of September 30, 2017 and December 31, 2016, 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 $575 as of September 30, 2017.

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

9 Months Ended

Sep. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

11. DERIVATIVE FINANCIAL INSTRUMENTS

United uses derivative instruments to help manage adverse prices 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. 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.

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 September 30, 2017 and December 31, 2016.

	Asset Derivatives
	September 30, 2017						December 31, 2016
	Balance Sheet Location		Notional Amount		Fair Value		Balance Sheet Location		Fair Value
Derivatives designated as hedging instruments Fair Value Hedges:
Interest rate swap contracts (hedging commercial loans)		Other assets	$	14,762	$	40		Other assets	$	24
Total derivatives designated as hedging instruments			$	14,762	$	40			$	24
Derivatives not designated as hedging instruments
Interest rate swap contracts		Other assets	$	0	$	0		Other assets	$	2,267
TBA mortgage-backed securities		Other assets		322,500		501		Other assets		0
Interest rate lock commitments		Other assets		169,588		7,027		Other assets		0
Total derivatives not designated as hedging instruments			$	492,088	$	7,528			$	2,267
Total asset derivatives			$	506,850	$	7,568			$	2,291

	Liability Derivatives
	September 30, 2017						December 31, 2016
	Balance Sheet Location		Notional Amount		Fair Value		Balance Sheet Location		Fair Value
Derivatives designated as hedging instruments Fair Value Hedges:
Interest rate swap contracts (hedging commercial loans)		Other liabilities	$	76,869	$	480		Other liabilities	$	338
Total derivatives designated as hedging instruments			$	76,869	$	480			$	338
Derivatives not designated as hedging instruments
Interest rate swap contracts		Other liabilities	$	0	$	0		Other liabilities	$	2,267
Forward loan sales commitments		Other liabilities		50,063		257		Other liabilities		0
Interest rate lock commitments		Other liabilities		65,862		291		Other liabilities		0
Total derivatives not designated as hedging instruments			$	115,925	$	548			$	2,267
Total liability derivatives			$	192,794	$	1,028			$	2,605

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 and nine months ended September 30, 2017 and 2016 are presented as follows:

				Three Months Ended
	Income Statement Location			September 30, 2017			September 30, 2016
Derivatives in hedging relationships Fair Value Hedges:
Interest rate swap contracts		Interest income/(expense	)	$	(208	)	$	(385	)
Total derivatives in hedging relationships				$	(208	)	$	(385	)
Derivatives not designated as hedging instruments
Forward loan sales commitments		Income from Mortgage Banking Activities			(257	)		0
TBA mortgage-backed securities		Income from Mortgage Banking Activities			123			0
Interest rate lock commitments		Income from Mortgage Banking Activities			(4,484	)		0
Total derivatives not designated as hedging instruments				$	(4,618	)	$	0
Total derivatives				$	(4,826	)	$	(385	)

				Nine Months Ended
	Income Statement Location			September 30, 2017			September 30, 2016
Derivatives in fair value hedging relationships Fair Value Hedges:
Interest rate swap contracts		Interest income/(expense	)	$	(648	)	$	353
Cash Flow Hedges:
Forward loan sales commitments		Other income			0			0
Total derivatives in hedging relationships				$	(648	)	$	353
Derivatives not designated as hedging instruments
Forward loan sales commitments		Income from Mortgage Banking Activities			(427	)		0
TBA mortgage-backed securities		Income from Mortgage Banking Activities			2,907			0
Interest rate lock commitments		Income from Mortgage Banking Activities			(3,465	)		0
Total derivatives not designated as hedging instruments				$	(985	)	$	0
Total derivatives				$	(1,633	)	$	353

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Fair Value Measurements

9 Months Ended

Sep. 30, 2017

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.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

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: Securities available for sale 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 September 30, 2017, 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 September 30, 2017. 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. Discount margins used in the valuation at September 30, 2017 ranged from LIBOR plus 3.25% to LIBOR plus 6.00%. Management completed a sensitivity analysis on the fair value of its Trup Cdos. Given a comprehensive 200 basis point increase in the discount rates, the total fair value of these securities would decline by approximately 18%, or $5,741.

Loans held for sale: For residential mortgage loans sold in the mortgage banking segment, the loans closed 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 0.27% to 0.40% 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 0.27% to 0.40% 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 September 30, 2017 and December 31, 2016, segregated by the level of the valuation inputs within the fair value hierarchy.

			Fair Value at September 30, 2017 Using
Description	Balance as of September 30, 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	$	115,866	$	0	$	115,866	$	0
State and political subdivisions		305,141		0		305,141		0
Residential mortgage-backed securities
Agency		714,700		0		714,700		0
Non-agency		5,846		0		5,846		0
Commercial mortgage-backed securities
Agency		420,792		0		420,792		0
Asset-backed securities		13,429		0		13,429		0
Trust preferred collateralized debt obligations		31,659		0		0		31,659
Single issue trust preferred securities		12,467		0		12,467		0
Other corporate securities		19,254		0		19,254		0
Total available for sale debt securities		1,639,154		0		1,607,495		31,659
Available for sale equity securities:
Financial services industry		3,016		401		2,615		0
Equity mutual funds (1)		6,250		6,250		0		0
Other equity securities		1,214		1,214		0		0
Total available for sale equity securities		10,480		7,865		2,615		0
Total available for sale securities		1,649,634		7,865		1,610,110		31,659
Loans held for sale		311,186		0		0		311,186
Derivative financial assets:
Interest rate swap contracts		40		0		40		0
Interest rate lock commitments		7,027		0		0		7,027
TBA mortgage-backed securities		501		501		0		0
Total derivative financial assets		7,568		501		40		7,027
Liabilities
Derivative financial liabilities:
Interest rate swap contracts		480		0		480		0
Forward sales commitments		257		0		257		0
Interest rate lock commitments		291		0		291		0
Total derivative financial liabilities		1,028		0		1,028		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, 2016 Using
Description	Balance as of December 31, 2016		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	$	95,786	$	0	$	95,786	$	0
State and political subdivisions		192,812		0		192,812		0
Residential mortgage-backed securities
Agency		584,096		0		584,096		0
Non-agency		7,043		0		7,043		0
Asset-backed securities		217		0		217		0
Commercial mortgage-backed securities
Agency		305,341		0		305,341		0
Trust preferred collateralized debt obligations		33,552		0		0		33,552
Single issue trust preferred securities		11,477		0		11,477		0
Other corporate securities		15,062		0		15,062		0
Total available for sale debt securities		1,245,386		0		1,211,834		33,552
Available for sale equity securities:
Financial services industry		10,735		1,372		9,363		0
Equity mutual funds (1)		1,820		1,820		0		0
Other equity securities		1,273		1,273		0		0
Total available for sale equity securities		13,828		4,465		9,363		0
Total available for sale securities		1,259,214		4,465		1,221,197		33,552
Derivative financial assets:
Interest rate swap contracts		2,291		0		2,291		0
Liabilities
Derivative financial liabilities:
Interest rate swap contracts		2,605		0		2,605		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 nine months ended September 30, 2017 and the year ended December 31, 2016.

The following table presents additional information about financial assets and liabilities measured at fair value at September 30, 2017 and December 31, 2016 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
	September 30, 2017			December 31, 2016
Balance, beginning of period	$	33,552		$	34,686
Total gains or losses (realized/unrealized):
Included in earnings (or changes in net assets)		9			0
Included in other comprehensive income		6,148			(1,134	)
Sales		(8,050	)		0
Balance, end of period	$	31,659		$	33,552
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
	September 30, 2017			December 31, 2016
Balance, beginning of period	$	0		$	0
Acquired in Cardinal merger		271,301			0
Originations		1,644,943			0
Sales		(1,639,737	)		0
Total gains or losses during the period recognized in earnings		41,929			0
Transfers in and/or out of Level 3		(7,250	)		0
Balance, end of period	$	311,186		$	0
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
	September 30, 2017			December 31, 2016
Balance, beginning of period	$	0		$	0
Acquired in Cardinal merger		10,393			0
Transfers other		(3,366	)		0
Balance, end of period	$	7,027		$	0
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 September 30, 2017			Nine Months  Ended September 30, 2017
Assets
Loans held for sale
Income from mortgage banking activities	$	(5,090	)	$	(7,529	)

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:

	September 30, 2017						December 31, 2016
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	$	303,953	$	311,186	$	7,233	$	0	$	0	$	0

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 nine months ended September 30, 2017. 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. Other than those intangible assets recorded in the acquisitions of Cardinal in the second quarter of 2017 and Bank of Georgetown in the second quarter of 2016, no other fair value measurement of intangible assets was made during the first nine months of 2017 and 2016.

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

			Carrying value at September 30, 2017
Description	Balance as of September 30, 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
Impaired Loans	$	105,900	$	0	$	74,852	$	31,048	$	9,045
OREO		26,826		0		26,743		83		2,904
			Carrying value at December 31, 2016
Description	Balance as of December 31, 2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		YTD Losses
Assets
Impaired Loans	$	80,505	$	0	$	27,609	$	52,896	$	5,119
OREO		31,510		0		31,510		0		2,086

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: The fair values of certain mortgage loans (e.g., one-to-four family residential), credit card loans, and other consumer loans are 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) are estimated using discounted cash flow analyses, using market interest rates currently being offered for loans with similar terms to borrowers of similar creditworthiness, which include adjustments for liquidity concerns. For acquired impaired loans, fair value is assumed to equal United’s carrying value, which represents 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 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)
September 30, 2017
Cash and cash equivalents	$	1,747,037	$	1,747,037	$	0	$	1,747,037	$	0
Securities available for sale		1,649,634		1,649,634		7,865		1,610,110		31,659
Securities held to maturity		20,335		19,909		0		16,889		3,020
Other securities		166,756		158,418		0		0		158,418
Loans held for sale		315,031		315,031		0		3,845		311,186
Loans		13,065,542		12,550,352		0		0		12,550,352
Derivative financial assets		7,568		7,568		501		40		7,027
Deposits		13,875,297		13,859,205		0		13,859,205		0
Short-term borrowings		492,036		492,036		0		492,036		0
Long-term borrowings		1,364,246		1,328,753		0		1,328,753		0
Derivative financial liabilities		1,028		1,028		0		1,028		0
December 31, 2016
Cash and cash equivalents	$	1,434,527	$	1,434,527	$	0	$	1,434,527	$	0
Securities available for sale		1,259,214		1,259,214		4,465		1,221,197		33,552
Securities held to maturity		33,258		31,178		0		28,158		3,020
Other securities		111,166		105,608		0		0		105,608
Loans held for sale		8,445		8,445		0		8,445		0
Loans		10,268,366		10,122,486		0		0		10,122,486
Derivative financial assets		2,291		2,291		0		2,291		0
Deposits		10,796,867		10,785,294		0		10,785,294		0
Short-term borrowings		209,551		209,551		0		209,551		0
Long-term borrowings		1,172,026		1,142,782		0		1,142,782		0
Derivative financial liabilities		2,605		2,605		0		2,605		0

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Stock Based Compensation

9 Months Ended

Sep. 30, 2017

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 and replaced the 2011 Long-Term Incentive Plan (2011 LTI Plan) which expired during the second quarter of 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 nine months of 2017, a total of 253,417 non-qualified stock options and 89,475 shares of restricted stock were granted under the 2016 LTI Plan.

Compensation expense of $909 and $2,589 related to the nonvested awards under United’s Long-Term Incentive Plans was incurred for the third quarter and first nine months of 2017, respectively, as compared to the compensation expense of $720 and $2,050 related to the nonvested awards under United’s Long-Term Incentive Plans incurred for the third quarter and first nine months of 2016, 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 September 30, 2017, and the changes during the first nine months of 2017 are presented below:

	Nine Months Ended September 30, 2017
						Weighted Average
	Shares			Aggregate Intrinsic Value		Remaining Contractual Term (Yrs.)		Exercise Price
Outstanding at January 1, 2017		1,411,735						$	28.05
Assumed in Cardinal merger		153,602							21.47
Granted		253,417							45.27
Exercised		(163,562	)						20.93
Forfeited or expired		(2,962	)						38.81
Outstanding at September 30, 2017		1,652,230		$	12,602		5.8	$	30.76
Exercisable at September 30, 2017		1,138,309		$	11,964		4.5	$	26.64

The following table summarizes the status of United’s nonvested stock option awards during the first nine months of 2017:

	Shares			Weighted-Average Grant Date Fair Value Per Share
Nonvested at January 1, 2017		430,278		$	6.84
Granted		253,417			8.85
Vested		(168,274	)		6.64
Forfeited or expired		(1,500	)		8.85
Nonvested at September 30, 2017		513,921		$	7.89

During the nine months ended September 30, 2017 and 2016, 163,562 and 248,677 shares, respectively, were issued in connection with stock option exercises. All shares issued in connection with stock option exercises for the nine months ended September 30, 2017 and 2016 were issued from authorized and unissued stock. The total intrinsic value of options exercised under the Plans during the nine months ended September 30, 2017 and 2016 was $3,078 and $4,670 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 September 30, 2017:

	Number of Shares			Weighted-Average Grant Date Fair Value Per Share
Outstanding at January 1, 2017		137,268		$	33.61
Granted		89,475			45.27
Vested		(53,950	)		32.23
Forfeited		(420	)		45.30
Outstanding at September 30, 2017		172,373		$	40.07

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Employee Benefit Plans

9 Months Ended

Sep. 30, 2017

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 third quarter of 2017, United made a discretionary contribution of $10,000 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.

As of December 31, 2016, United changed the method used to estimate the interest cost component of net periodic benefit cost for the Plan. Under the previous method, appropriate spot rates were used to discount the projected benefit obligation (PBO) cash flows based on date of measurement. Then, a single aggregated discount rate was calculated such that the present value of the PBO remained the same. This rate is technically a weighted-average of the spot rates. This single discount rate was applied to the interest and service costs as well. Under the full yield curve approach, separate discount rates are used to calculate the present value for each projected cash flow. This does not have any impact on the present value of the PBO as the PBO was originally discounted with spot rates. The adoption of this method concerns the manner in which it affects interest and service costs. This new method constitutes a change in an accounting estimate under the provisions of ASC topic 250, “Accounting Changes and Error Corrections,” that is inseparable from a change in accounting principle and was accounted for prospectively, with the resulting change impacting the recognition of net periodic pension cost beginning January 1, 2017. The impact of this accounting change on United’s net periodic pension cost for the third quarter and first nine months of 2017 was a decline of $252 and $748, respectively, in expense from the amount that would have been recorded under the previous method.

Included in accumulated other comprehensive income at December 31, 2016 are unrecognized actuarial losses of $53,991 ($34,014 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, 2017 is $4,411 ($2,779 net of tax).

Net periodic pension cost for the three and nine months ended September 30, 2017 and 2016 included the following components:

	Three Months Ended September 30						Nine Months Ended September 30
	2017			2016			2017			2016
Service cost	$	574		$	614		$	1,705		$	1,829
Interest cost		1,293			1,471			3,837			4,383
Expected return on plan assets		(2,072	)		(2,034	)		(6,148	)		(6,058	)
Recognized net actuarial loss		1,111			1,161			3,298			3,458
Net periodic pension (benefit) cost	$	906		$	1,212		$	2,692		$	3,612
Weighted-Average Assumptions:
Discount rate		4.49	%		4.75	%		4.49	%		4.75	%
Expected return on assets		7.00	%		7.25	%		7.00	%		7.25	%
Rate of compensation increase (prior to age 45)		3.50	%		3.50	%		3.50	%		3.50	%
Rate of compensation increase		3.00	%		3.00	%		3.00	%		3.00	%

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Income Taxes

9 Months Ended

Sep. 30, 2017

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 September 30, 2017, United has provided a liability for $2,405 of unrecognized tax benefits related to various federal and state income tax matters. The entire amount of unrecognized tax benefits, if recognized, would impact United’s effective tax rate. Over the next 12 months, the statute of limitations will close on certain income tax periods. However, at this time, United cannot reasonably estimate the amount of tax benefits it may recognize over the next 12 months.

United is currently open to audit under the statute of limitations by the Internal Revenue Service for the years ended December 31, 2014, 2015 and 2016 and certain State Taxing authorities for the years ended December 31, 2014 through 2016.

As of September 30, 2017 and 2016, the total amount of accrued interest related to uncertain tax positions was $548 and $792, respectively. United accounts for interest and penalties related to uncertain tax positions as part of its provision for federal and state income taxes.

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Comprehensive Income

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Comprehensive Income

16. COMPREHENSIVE INCOME

The components of total comprehensive income for the three and nine months ended September 30, 2017 and 2016 are as follows:

	Three Months Ended September 30						Nine Months Ended September 30
	2017			2016			2017			2016
Net Income	$	56,738		$	41,479		$	132,606		$	107,977
Available for sale (“AFS”) securities:
AFS securities with OTTI charges during the period		0			0			(60	)		(77	)
Related income tax effect		0			0			22			28
Less: OTTI charges recognized in net income		0			0			60			33
Related income tax benefit		0			0			(22	)		(12	)
Reclassification of previous noncredit OTTI to credit OTTI		0			0			0			415
Related income tax benefit		0			0			0			(150	)
Net unrealized (losses) gains on AFS securities with OTTI		0			0			0			237
AFS securities – all other:
Change in net unrealized gain on AFS securities arising during the period		3,584			(7,599	)		14,846			12,356
Related income tax effect		(1,326	)		2,735			(5,493	)		(4,489	)
Net reclassification adjustment for (gains) losses included in net income		(467	)		(1	)		(1,444	)		(251	)
Related income tax expense (benefit)		173			0			534			91
		1,964			(4,865	)		8,443			7,707
Net effect of AFS securities on other comprehensive income		1,964			(4,865	)		8,443			7,944
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			6			6
Related income tax expense		(0	)		(0	)		(2	)		(2	)
Net effect of HTM securities on other comprehensive income		2			2			4			4
Pension plan:
Recognized net actuarial loss		1,111			1,161			3,298			3,458
Related income tax benefit		(394	)		(384	)		(1,191	)		(1,223	)
Net effect of change in pension plan asset on other comprehensive income		717			777			2,107			2,235
Total change in other comprehensive income		2,683			(4,086	)		10,554			10,183
Total Comprehensive Income	$	59,421		$	37,393		$	143,160		$	118,160

The components of accumulated other comprehensive income for the nine months ended September 30, 2017 are as follows:

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

For the Nine Months Ended September 30, 2017

	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, 2017	($	10,297	)	($	51	)	($	34,369	)	($	44,717	)
Other comprehensive income before reclassification		9,353			4			0			9,357
Amounts reclassified from accumulated other comprehensive income		(910	)		0			2,107			1,197
Net current-period other comprehensive income, net of tax		8,443			4			2,107			10,554
Balance at September 30, 2017	($	1,854	)	($	47	)	($	32,262	)	($	34,163	)

Reclassifications out of Accumulated Other Comprehensive Income (AOCI)

For the Nine Months Ended September 30, 2017

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		Total other-than-temporary impairment losses
Net reclassification adjustment for losses (gains) included in net income		(1,444	)	Net gains on sales/calls of investment securities
		(1,444	)	Total before tax
Related income tax effect		534		Tax expense
		(910	)	Net of tax
Pension plan:
Recognized net actuarial loss		3,298	(a)
		3,298		Total before tax
Related income tax effect		(1,191	)	Tax expense
		2,107		Net of tax
Total reclassifications for the period	$	1,197

(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

9 Months Ended

Sep. 30, 2017

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				Nine Months Ended
	September 30				September 30
	2017		2016		2017		2016
Distributed earnings allocated to common stock	$	34,587	$	25,174	$	95,871	$	73,242
Undistributed earnings allocated to common stock		22,065		16,234		36,518		34,545
Net earnings allocated to common shareholders	$	56,652	$	41,408	$	132,389	$	107,787
Average common shares outstanding		104,760,153		76,218,573		95,040,664		72,413,246
Equivalents from stock options		307,969		429,200		409,962		333,117
Average diluted shares outstanding		105,068,122		76,647,773		95,450,626		72,746,363
Earnings per basic common share	$	0.54	$	0.54	$	1.39	$	1.49
Earnings per diluted common share	$	0.54	$	0.54	$	1.39	$	1.48

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Variable Interest Entities

9 Months Ended

Sep. 30, 2017

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 fifteen 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
Century Trust	March 23, 2000	$	8,800	10.875% Fixed	March 8, 2030
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 subsidiaries, 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 September 30, 2017						As of December 31, 2016
	Aggregate Assets		Aggregate Liabilities		Risk Of Loss (1)		Aggregate Assets		Aggregate Liabilities		Risk Of Loss (1)
Trust preferred securities	$	266,560	$	257,605	$	8,955	$	240,668	$	232,583	$	8,085

(1) Represents investment in VIEs.

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Segment Information

9 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Segment Information

19. SEGMENT INFORMATION

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.

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 and nine months ended September 30, 2017 and 2016 is as follows:

	At and For the Three Months Ended September 30, 2017
	Community Banking		Mortgage Banking			Other			Consolidated
Net interest income	$	152,886	$	(36	)	$	(2,574	)	$	150,276
Provision for loans losses		7,279		0			0			7,279
Other income		18,373		19,936			(80	)		38,229
Other expense		74,553		24,036			(1,937	)		96,652
Income taxes		29,490		(1,332	)		(322	)		27,836
Net income (loss)	$	59,937	$	(2,804	)	$	(395	)	$	56,738
Total assets (liabilities)	$	18,780,395	$	350,483		$	(900	)	$	19,129,978
Average assets (liabilities)		18,620,035		321,744			(13,994	)		18,927,785

	At and For the Three Months Ended September 30,  2016
	Community Banking		Other			Consolidated
Net interest income	$	113,033	$	(1,964	)	$	111,069
Provision for loans losses		6,988		0			6,988
Other income		19,666		(645	)		19,021
Other expense		63,009		(232	)		62,777
Income taxes		19,729		(883	)		18,846
Net income (loss)	$	42,973	$	(1,494	)	$	41,479
Total assets (liabilities)	$	14,364,797	$	(20,101	)	$	14,344,696
Average assets (liabilities)		14,182,202		(22,633	)		14,159,569

	At and For the Nine Months Ended September 30, 2017
	Community Banking		Mortgage Banking			Other			Consolidated
Net interest income	$	401,044	$	54		$	(6,957	)	$	394,141
Provision for loans losses		21,429		0			0			21,429
Other income		53,409		42,329			3,143			98,881
Other expense		215,935		42,744			12,952			271,631
Income taxes		73,214		(39	)		(5,819	)		67,356
Net income (loss)	$	143,875	$	(322	)	$	(10,947	)	$	132,606
Total assets (liabilities)	$	18,780,395	$	350,483		$	(900	)	$	19,129,978
Average assets (liabilities)		17,020,928		187,118			(20,402	)		17,187,644

	At and For the Nine Months Ended September 30,  2016
	Community Banking		Other			Consolidated
Net interest income	$	317,835	$	(5,757	)	$	312,078
Provision for loans losses		18,690		0			18,690
Other income		55,323		(1,943	)		53,380
Other expense		186,322		(634	)		185,688
Income taxes		55,580		(2,477	)		53,103
Net income (loss)	$	112,566	$	(4,589	)	$	107,977
Total assets (liabilities)	$	14,364,797	$	(20,101	)	$	14,344,696
Average assets (liabilities)		13,125,973		(21,575	)		13,104,398

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2017

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 September 30, 2017 and 2016 and for the three-month and nine-month periods then ended have not been audited. The consolidated balance sheet as of December 31, 2016 has been extracted from the audited financial statements included in United’s 2016 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 2016 Annual Report of United on Form 10-K. To conform to the 2017 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 considers all of its principal business activities to be bank related. All significant intercompany accounts and transactions have been eliminated in the consolidated financial statements. Dollars are in thousands, except per share or unless otherwise noted.

New Accounting Standards

New Accounting Standards

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 Entices 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; early adoption is permitted. 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 is not expected to 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 is effective for United on January 1, 2018, with early adoption permitted. 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 2017-04, “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 is effective for United on January 1, 2018, 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 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 is effective for United on January 1, 2018, 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 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.” United adopted ASU 2016-09 on January 1, 2017 utilizing the modified retrospective method. ASU 2016-09 changes certain aspects of accounting for share-based payments to employees. The new guidance, amongst other things, requires 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 $146 and $960 for the three and nine months ended September 30, 2017, respectively. 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. United elected to apply that change in cash flow classification on a retrospective basis, which resulted in an $2,083 increase to net cash from operating activities and a corresponding decrease to net cash from financing activities in the accompanying Consolidated Statement of Cash Flows for the first nine months of 2016. The recognition of excess tax benefits and deficiencies in the income statement was adopted prospectively. 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 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 and management is currently evaluating the impact this standard may have on the Company’s financial condition or results of operations.

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 is effective for United on January 1, 2018 and is not expected to 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. ASU 2014-09 will be effective for United on January 1, 2018. The Company intends to adopt the amendments of ASU 2014-09 beginning January 1, 2018 through the modified-retrospective transition method with a cumulative effect adjustment to opening retained earnings. The Company’s 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 and gains and losses from securities are not impacted by the standard. Thus far, we have identified revenue streams within the scope of the guidance and analyzed those revenue streams to determine the impact of the standard. We have reviewed and evaluated a number of revenue contracts to determine the impact the new recognition methods will have on revenue recognition. Based on this review, ASU 2014-09 may require the Company to change how it recognizes certain recurring revenue streams related to noninterest income including fees from trust and brokerage services. Although we currently do not expect this standard to have a material impact on the timing or amount of revenue, we are still assessing the potential impact on the Company’s consolidated financial statements.

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)

9 Months Ended

Sep. 30, 2017

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

Schedule of Fair Value of Acquired Identifiable Assets and Liabilities Assumed

The consideration paid for Bank of Georgetown’s common equity and the fair value of acquired identifiable assets and liabilities assumed as of the BOG Acquisition Date were as follows:

Purchase price:
Value of common shares issued (6,527,746 shares)	$	253,799
Fair value of stock options assumed		10,696
Cash for fractional shares		10
Total purchase price		264,505
Identifiable assets:
Cash and cash equivalents		29,340
Investment securities		219,783
Loans		966,870
Premises and equipment		5,574
Core deposit intangibles		9,058
Other assets		31,605
Total identifiable assets	$	1,262,230
Identifiable liabilities:
Deposits	$	971,685
Short-term borrowings		101,021
Long-term borrowings		67,659
Other liabilities		11,532
Total identifiable liabilities		1,151,897
Fair value of net assets acquired including identifiable intangible assets		110,333
Resulting goodwill	$	154,172

Cardinal Financial Corporation [Member]

Schedule of Acquired Loans Accounted for at Fair Value

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

	June 3, 2016
Contractually required principal and interest at acquisition	$	1,275,398
Contractual cash flows not expected to be collected		(33,980	)
Expected cash flows at acquisition		1,241,418
Interest component of expected cash flows		(274,548	)
Basis in acquired loans at acquisition – estimated fair value	$	966,870

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		28,723
George Mason trade name intangible		1,230
Other assets		135,383
Total identifiable assets	$	4,069,818
Identifiable liabilities:
Deposits	$	3,349,812
Short-term borrowings		96,215
Long-term borrowings		220,119
Unfavorable lease liability		2,281
Other liabilities		48,650
Total identifiable liabilities		3,717,077
Preliminary fair value of net assets acquired including identifiable intangible assets		352,741
Preliminary resulting goodwill	$	622,513

Schedule of Business Acquisition Pro Forma Information

The following table presents certain unaudited pro forma information for the results of operations for the nine months ended September 30, 2017 and 2016, as if the Cardinal merger had occurred on January 1, 2017 and 2016, respectively. 

	Proforma Nine Months Ended September 30
	2017		2016
Total Revenues (1)	$	573,790	$	585,223
Net Income		136,104		160,731

⁽¹⁾  Represents net interest income plus other income

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Investment Securities (Tables)

9 Months Ended

Sep. 30, 2017

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.

	September 30, 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	$	115,224	$	864	$	222	$	115,866	$	0
State and political subdivisions		305,096		2,567		2,522		305,141		0
Residential mortgage-backed securities
Agency		715,003		3,819		4,122		714,700		0
Non-agency		5,259		587		0		5,846		86
Commercial mortgage-backed securities
Agency		420,115		2,081		1,404		420,792		0
Asset-backed securities		13,422		10		3		13,429		0
Trust preferred collateralized debt obligations		38,186		317		6,844		31,659		20,770
Single issue trust preferred securities		13,404		404		1,341		12,467		0
Other corporate securities		18,998		256		0		19,254		0
Marketable equity securities		9,950		541		11		10,480		0
Total	$	1,654,657	$	11,446	$	16,469	$	1,649,634	$	20,856

	December 31, 2016
			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	$	95,247	$	698	$	159	$	95,786	$	0
State and political subdivisions		196,350		1,364		4,902		192,812		0
Residential mortgage-backed securities
Agency		585,208		3,999		5,111		584,096		0
Non-agency		6,629		426		12		7,043		86
Commercial mortgage-backed securities
Agency		304,635		1,948		1,242		305,341		0
Asset-backed securities		217		0		0		217		0
Trust preferred collateralized debt obligations		48,558		729		15,735		33,552		25,952
Single issue trust preferred securities		13,363		284		2,170		11,477		0
Other corporate securities		14,996		66		0		15,062		0
Marketable equity securities		12,436		1,398		6		13,828		0
Total	$	1,277,639	$	10,912	$	29,337	$	1,259,214	$	26,038

(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 September 30, 2017 and December 31, 2016.

	Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
September 30, 2017
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	27,053	$	128	$	19,932	$	94
State and political subdivisions		83,310		896		38,004		1,626
Residential mortgage-backed securities
Agency		351,936		3,410		31,690		712
Non-agency		0		0		0		0
Commercial mortgage-backed securities
Agency		228,307		1,218		12,272		186
Asset-backed securities		6,760		3		0		0
Trust preferred collateralized debt obligations		0		0		29,544		6,844
Single issue trust preferred securities		0		0		4,365		1,341
Marketable equity securities		0		0		352		11
Total	$	697,366	$	5,655	$	136,159	$	10,814

	Less than 12 months				12 months or longer
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
December 31, 2016
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	24,101	$	159	$	0	$	0
State and political subdivisions		116,300		4,902		0		0
Residential mortgage-backed securities
Agency		309,376		5,111		0		0
Non-agency		0		0		218		12
Commercial mortgage-backed securities
Agency		162,479		1,242		0		0
Asset-backed securities		0		0		0		0
Trust preferred collateralized debt obligations		0		0		28,579		15,735
Single issue trust preferred securities		0		0		8,185		2,170
Marketable equity securities		357		6		0		0
Total	$	612,613	$	11,420	$	36,982	$	17,917

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 September 30				Nine Months Ended September 30
	2017		2016		2017		2016
Proceeds from sales and calls	$	64,257	$	174,015	$	631,561	$	368,246
Gross realized gains		1,781		3		2,840		259
Gross realized losses		1,314		1		1,396		7

Summary of Unrealized Loss Positions of Available for Sale TRUP CDOs and Single Issue Trust Preferred Securities

The following is a summary of the available for sale Trup Cdos as of September 30, 2017:

								Amortized Cost
Class	Amortized Cost		Fair Value		Unrealized Loss			Investment Grade		Split Rated		Below Investment Grade
Senior – Bank	$	5,208	$	5,287	$	(79	)	$	3,410	$	0	$	1,798
Mezzanine – Bank (now in senior position)		6,428		5,518		910			0		0		6,428
Mezzanine – Bank		22,656		17,918		4,738			0		0		22,656
Mezzanine – Bank & Insurance (combination)		3,894		2,936		958			0		0		3,894
Totals	$	38,186	$	31,659	$	6,527		$	3,410	$	0	$	34,776

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 September 30					Nine Months Ended September 30
	2017			2016		2017			2016
Balance of cumulative credit losses at beginning of period	$	22,162		$	22,162	$	22,162		$	23,773
Additional credit losses on securities for which OTTI was previously recognized		0			0		0			33
Reductions during the period for securities for which the amount previously recognized in other comprehensive income was recognized in earnings		(4,102	)		0		(4,102	)		(1,644	)
Balance of cumulative credit losses at end of period	$	18,060		$	22,162	$	18,060		$	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:

	September 30, 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	$	5,215	$	400	$	0	$	5,615
State and political subdivisions		5,674		12		0		5,686
Residential mortgage-backed securities
Agency		26		4		0		30
Single issue trust preferred securities		9,400		0		842		8,558
Other corporate securities		20		0		0		20
Total	$	20,335	$	416	$	842	$	19,909

	December 31, 2016
			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury securities and obligations of U.S. Government corporations and agencies	$	5,295	$	570	$	0	$	5,865
State and political subdivisions		8,598		17		0		8,615
Residential mortgage-backed securities
Agency		30		5		0		35
Single issue trust preferred securities		19,315		0		2,672		16,643
Other corporate securities		20		0		0		20
Total	$	33,258	$	592	$	2,672	$	31,178

Available-for-sale Securities [Member]

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

The amortized cost and estimated fair value of securities available for sale at September 30, 2017 and December 31, 2016 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.

	September 30, 2017				December 31, 2016
			Estimated				Estimated
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	57,720	$	57,622	$	53,286	$	53,330
Due after one year through five years		370,020		371,007		296,181		297,385
Due after five years through ten years		342,176		343,326		213,094		213,791
Due after ten years		874,791		867,199		702,642		680,880
Marketable equity securities		9,950		10,480		12,436		13,828
Total	$	1,654,657	$	1,649,634	$	1,277,639	$	1,259,214

Held-to-maturity Securities [Member]

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

The amortized cost and estimated fair value of debt securities held to maturity at September 30, 2017 and December 31, 2016 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.

	September 30, 2017				December 31, 2016
			Estimated				Estimated
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less	$	0	$	0	$	1,040	$	1,041
Due after one year through five years		9,189		9,600		8,268		8,850
Due after five years through ten years		5,726		5,382		3,585		3,589
Due after ten years		5,420		4,927		20,365		17,698
Total	$	20,335	$	19,909	$	33,258	$	31,178

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Loans (Tables)

9 Months Ended

Sep. 30, 2017

Receivables [Abstract]

Major Classes of Loans

Major classes of loans are as follows:

	September 30, 2017		December 31, 2016
Commercial, financial and agricultural:
Owner-occupied commercial real estate	$	1,364,757	$	1,049,885
Nonowner-occupied commercial real estate		4,686,183		3,425,453
Other commercial loans		1,757,741		1,613,437
Total commercial, financial & agricultural		7,808,681		6,088,775
Residential real estate		3,050,868		2,403,437
Construction & land development		1,599,632		1,255,738
Consumer:
Bankcard		13,775		14,187
Other consumer		683,898		594,582
Total gross loans	$	13,156,854	$	10,356,719

Activity for Accretable Yield

Activity for the accretable yield for the first nine months of 2017 follows:

Accretable yield at the beginning of the period	$	29,165
Accretion (including cash recoveries)		(11,312	)
Additions		17,444
Net reclassifications to accretable from non-accretable		2,727
Disposals (including maturities, foreclosures, and charge-offs)		(2,367	)
Accretable yield at the end of the period	$	35,657

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Credit Quality (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30, 2016, segregated by class of loans:

	Troubled Debt Restructurings
	For the Three Months Ended
	September 30, 2016
	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		1		110		110
Residential real estate		0		0		0
Construction & land development		0		0		0
Consumer:
Bankcard		0		0		0
Other consumer		0		0		0
Total		1	$	110	$	110

The following table sets forth United’s troubled debt restructurings that were restructured during the nine months ended September 30, 2017 and 2016, segregated by class of loans:

	Troubled Debt Restructurings
	For the Nine Months Ended
	September 30, 2017						September 30, 2016
	Number of Contracts		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment		Number of Contracts		Pre- Modification Outstanding Recorded Investment		Post- Modification Outstanding Recorded Investment
Commercial real estate:
Owner-occupied		1	$	5,333	$	5,333		1	$	1,190	$	1,184
Nonowner-occupied		0		0		0		0		0		0
Other commercial		8		24,102		22,291		5		2,250		1,725
Residential real estate		0		0		0		1		1,400		1,400
Construction & land development		1		1,456		1,400		0		0		0
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		0		0		0		0		0		0
Total		10	$	30,891	$	29,024		7	$	4,840	$	4,309

Schedule of Charged-off Troubled Debt Restructurings on Financing Receivables

The following table presents troubled debt restructurings, by class of loan, that had charge-offs during the three months and nine months ended September 30, 2017.

	Three Months Ended September 30, 2017				Nine Months Ended September 30, 2017
(In thousands)	Number of Contracts		Recorded Investment		Number of Contracts		Recorded Investment
Troubled Debt Restructurings
Commercial real estate:
Owner-occupied		0	$	0		0	$	0
Nonowner-occupied		0		0		0		0
Other commercial		1		1,495		1		1,495
Residential real estate		0		0		0		0
Construction & land development		0		0		0		0
Consumer:
Bankcard		0		0		0		0
Other consumer		0		0		0		0
Total		1	$	1,495		1	$	1,495

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 September 30, 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	$	9,704	$	6,912	$	16,616	$	1,348,141	$	1,364,757	$	0
Nonowner-occupied		7,686		20,797		28,483		4,657,700		4,686,183		0
Other commercial		13,589		79,342		92,931		1,664,810		1,757,741		802
Residential real estate		33,654		25,564		59,218		2,991,650		3,050,868		5,298
Construction & land development		3,351		17,852		21,203		1,578,429		1,599,632		14,828
Consumer:
Bankcard		385		210		595		13,180		13,775		210
Other consumer		8,087		1,305		9,392		674,506		683,898		1,111
Total	$	76,456	$	151,982	$	228,438	$	12,928,416	$	13,156,854	$	22,249

(1) Other includes loans with a recorded investment of $227,754 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, 2016

(In thousands)	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	$	5,850	$	3,981	$	9,831	$	1,040,054	$	1,049,885	$	94
Nonowner-occupied		9,288		20,847		30,135		3,395,318		3,425,453		172
Other commercial		15,273		42,766		58,039		1,555,398		1,613,437		2,518
Residential real estate		29,976		25,991		55,967		2,347,470		2,403,437		4,216
Construction & land development		3,809		7,779		11,588		1,244,150		1,255,738		33
Consumer:
Bankcard		422		141		563		13,624		14,187		141
Other consumer		10,015		1,712		11,727		582,855		594,582		1,412
Total	$	74,633	$	103,217	$	177,850	$	10,178,869	$	10,356,719	$	8,586

(1) Other includes loans with a recorded investment of $171,596 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

	September 30, 2017		December 31, 2016
Commercial real estate:
Owner-occupied	$	6,912	$	3,887
Nonowner-occupied		20,797		20,675
Other commercial		78,540		40,248
Residential real estate		20,266		21,775
Construction & land development		3,024		7,746
Consumer:
Bankcard		0		0
Other consumer		194		300
Total	$	129,733	$	94,631

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 September 30, 2017
	Commercial Real Estate				Other Commercial		Construction & Land Development
	Owner- occupied		Nonowner- occupied
Grade:
Pass	$	1,282,657	$	4,544,799	$	1,611,250	$	1,498,656
Special mention		23,827		44,080		47,450		19,872
Substandard		58,273		97,304		98,933		81,104
Doubtful		0		0		108		0
Total	$	1,364,757	$	4,686,183	$	1,757,741	$	1,599,632
As of December 31, 2016
	Commercial Real Estate				Other Commercial		Construction & Land Development
	Owner- occupied		Nonowner- occupied
Grade:
Pass	$	963,503	$	3,284,497	$	1,463,797	$	1,126,742
Special mention		20,490		36,462		26,537		52,327
Substandard		65,892		104,494		122,893		76,669
Doubtful		0		0		210		0
Total	$	1,049,885	$	3,425,453	$	1,613,437	$	1,255,738

Credit Quality Indicators

Consumer Credit Exposure

As of September 30, 2017
	Residential Real Estate		Bankcard		Other Consumer
Grade:
Pass	$	2,999,614	$	13,180	$	674,447
Special mention		18,953		385		8,134
Substandard		32,301		210		1,317
Doubtful		0		0		0
Total	$	3,050,868	$	13,775	$	683,898
As of December 31, 2016
	Residential Real Estate		Bankcard		Other Consumer
Grade:
Pass	$	2,348,017	$	13,624	$	582,704
Special mention		18,240		422		10,132
Substandard		36,995		141		1,746
Doubtful		185		0		0
Total	$	2,403,437	$	14,187	$	594,582

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
	September 30, 2017						December 31, 2016
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	64,592	$	65,355	$	0	$	46,575	$	47,108	$	0
Nonowner-occupied		143,100		143,552		0		92,654		93,104		0
Other commercial		55,022		58,785		0		46,064		48,308		0
Residential real estate		20,873		22,546		0		22,747		24,404		0
Construction & land development		30,959		33,225		0		19,863		21,746		0
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		16		16		0		36		36		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	8,220	$	8,220	$	923	$	1,787	$	2,082	$	815
Nonowner-occupied		12,182		12,182		1,786		17,938		17,938		2,524
Other commercial		70,344		80,415		21,890		43,774		46,188		13,441
Residential real estate		13,743		15,082		1,659		12,066		12,801		3,431
Construction & land development		1,411		5,910		488		4,940		7,899		3,206
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		0		0		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	72,812	$	73,575	$	923	$	48,362	$	49,190	$	815
Nonowner-occupied		155,282		155,734		1,786		110,592		111,042		2,524
Other commercial		125,366		139,200		21,890		89,838		94,496		13,441
Residential real estate		34,616		37,628		1,659		34,813		37,205		3,431
Construction & land development		32,370		39,135		488		24,803		29,645		3,206
Consumer:
Bankcard		0		0		0		0		0		0
Other consumer		16		16		0		36		36		0

	Impaired Loans
	For the Three Months Ended
	September 30, 2017				September 30, 2016
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	58,980	$	376	$	38,199	$	531
Nonowner-occupied		108,959		312		71,154		321
Other commercial		57,317		306		45,028		1,221
Residential real estate		19,553		74		27,214		170
Construction & land development		23,846		552		28,730		46
Consumer:
Bankcard		0		0		0		0
Other consumer		25		0		35		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	11,624	$	131	$	3,353	$	36
Nonowner-occupied		13,408		89		14,046		122
Other commercial		72,835		216		33,195		42
Residential real estate		15,225		16		8,579		52
Construction & land development		1,641		21		8,591		56
Consumer:
Bankcard		0		0		0		0
Other consumer		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	70,604	$	507	$	41,552	$	567
Nonowner-occupied		122,367		401		85,200		443
Other commercial		130,152		522		78,223		1,263
Residential real estate		34,778		90		35,793		222
Construction & land development		25,487		573		37,321		102
Consumer:
Bankcard		0		0		0		0
Other consumer		25		0		35		0

	Impaired Loans
	For the Nine Months Ended
	September 30, 2017				September 30, 2016
	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
With no related allowance recorded:
Commercial real estate:
Owner-occupied	$	55,506	$	1,011	$	34,030	$	715
Nonowner-occupied		93,254		811		70,081		714
Other commercial		55,891		895		37,805		1,446
Residential real estate		19,634		206		26,737		406
Construction & land development		20,706		563		26,559		112
Consumer:
Bankcard		0		0		0		0
Other consumer		29		0		32		0
With an allowance recorded:
Commercial real estate:
Owner-occupied	$	9,392	$	424	$	3,603	$	92
Nonowner-occupied		14,595		363		10,416		360
Other commercial		65,142		1,410		34,755		270
Residential real estate		15,186		89		9,129		77
Construction & land development		2,872		64		10,300		146
Consumer:
Bankcard		0		0		0		0
Other consumer		0		0		0		0
Total:
Commercial real estate:
Owner-occupied	$	64,898	$	1,435	$	37,633	$	807
Nonowner-occupied		107,849		1,174		80,497		1,074
Other commercial		121,033		2,305		72,560		1,716
Residential real estate		34,820		295		35,866		483
Construction & land development		23,578		627		36,859		258
Consumer:
Bankcard		0		0		0		0
Other consumer		29		0		32		0

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Allowance for Credit Losses (Tables)

9 Months Ended

Sep. 30, 2017

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

For the Three Months Ended September 30, 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	$	5,129	$	7,099		$	37,287	$	12,479		$	7,514	$	2,715	$	760		$	72,983
Charge-offs		518		0			4,854		299			54		632		0			6,357
Recoveries		397		168			156		60			89		151		0			1,021
Provision		230		(472	)		8,782		(1,385	)		452		281		(609	)		7,279
Ending balance	$	5,238	$	6,795		$	41,371	$	10,855		$	8,001	$	2,515	$	151		$	74,926

Allowance for Loan Losses and Carrying Amount of Loans

For the Nine Months Ended September 30, 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		1,433			295		14,883		2,331			2,576			2,046		0			23,564
Recoveries		1,590			198		821		352			705			624		0			4,290
Provision		(192	)		9		22,346		(936	)		(734	)		1,132		(196	)		21,429
Ending balance	$	5,238		$	6,795	$	41,371	$	10,855		$	8,001		$	2,515	$	151		$	74,926
Ending Balance: individually evaluated for impairment	$	923		$	1,786	$	21,890	$	1,659		$	488		$	0	$	0		$	26,746
Ending Balance: collectively evaluated for impairment	$	4,315		$	5,009	$	19,481	$	9,196		$	7,513		$	2,515	$	151		$	48,180
Ending Balance: loans acquired with deteriorated credit quality	$	0		$	0	$	0	$	0		$	0		$	0	$	0		$	0
Financing receivables:
Ending balance	$	1,364,757		$	4,686,183	$	1,757,741	$	3,050,868		$	1,599,632		$	697,673	$	0		$	13,156,854
Ending Balance: individually evaluated for impairment	$	32,888		$	25,220	$	89,559	$	15,574		$	16,879		$	0	$	0		$	180,120
Ending Balance: collectively evaluated for impairment	$	1,297,668		$	4,537,792	$	1,636,037	$	3,021,173		$	1,558,653		$	697,657	$	0		$	12,748,980
Ending Balance: loans acquired with deteriorated credit quality	$	34,201		$	123,171	$	32,145	$	14,121		$	24,100		$	16	$	0		$	227,754

Allowance for Loan Losses and Carrying Amount of Loans

For the Year Ended December 31, 2016

	Commercial Real Estate				Other Commercial		Residential Real Estate		Construction			Consumer		Allowance for		Total
	Owner- occupied		Nonowner- occupied						& Land Development					Estimated Imprecision
Allowance for Loan Losses:
Beginning balance	$	3,637	$	5,309	$	31,328	$	15,148	$	18,205		$	1,995	$	104	$	75,726
Charge-offs		5,281		419		20,430		4,597		2,659			2,794		0		36,180
Recoveries		3,071		675		3,452		639		433			446		0		8,716
Provision		3,846		1,318		18,737		2,580		(5,373	)		3,158		243		24,509
Ending balance	$	5,273	$	6,883	$	33,087	$	13,770	$	10,606		$	2,805	$	347	$	72,771
Ending Balance: individually evaluated for impairment	$	815	$	2,524	$	13,441	$	3,431	$	3,206		$	0	$	0	$	23,417
Ending Balance: collectively evaluated for impairment	$	4,458	$	4,359	$	19,646	$	10,339	$	7,400		$	2,805	$	347	$	49,354
Ending Balance: loans acquired with deteriorated credit quality	$	0	$	0	$	0	$	0	$	0		$	0	$	0	$	0
Financing receivables:
Ending balance	$	1,049,885	$	3,425,453	$	1,613,437	$	2,403,437	$	1,255,738		$	608,769	$	0	$	10,356,719
Ending Balance: individually evaluated for impairment	$	18,976	$	26,835	$	56,091	$	14,766	$	8,152		$	0	$	0	$	124,820
Ending Balance: collectively evaluated for impairment	$	1,005,999	$	3,323,117	$	1,527,479	$	2,373,969	$	1,221,006		$	608,733	$	0	$	10,060,303
Ending Balance: loans acquired with deteriorated credit quality	$	24,910	$	75,501	$	29,867	$	14,702	$	26,580		$	36	$	0	$	171,596

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Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2017

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:

	September 30, 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	$	98,358	($	52,062	)	$	0	($	0	)	$	98,358	($	52,062	)
Non-amortized intangible assets:
George Mason trade name	$	0				$	1,230				$	1,230
Goodwill not subject to amortization	$	1,466,152				$	21,455				$	1,487,607

	December 31, 2016
	Community Banking					Total
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Core deposit intangible assets	$	69,635	($	46,681	)	$	69,635	($	46,681	)
Goodwill not subject to amortization	$	863,767				$	863,767

Reconciliation of Goodwill

The following table provides a reconciliation of goodwill:

	Community Banking		Mortgage Banking		Total
Goodwill at December 31, 2016	$	863,767	$	0	$	863,767
Addition to goodwill from Bank of Georgetown acquisition		1,327		0		1,327
Preliminary addition to goodwill from Cardinal acquisition		601,058		21,455		622,513
Goodwill at September 30, 2017	$	1,466,152	$	21,455	$	1,487,607

Schedule of Anticipated Amortization Expense

The following table sets forth the anticipated amortization expense for intangible assets for the years subsequent to 2016:

Year	Amount
2017	$	7,772
2018		8,039
2019		7,015
2020		6,309
2021 and thereafter		22,542

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Long-Term Borrowings (Tables)

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Schedule of Maturities of FHLB Borrowings

The scheduled maturities of these FHLB borrowings are as follows:

Year	Amount
2017	$	815,000
2018		131,776
2019		187,809
2020		42,247
2021 and thereafter		95,283
Total	$	1,272,115

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Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30, 2017 and December 31, 2016.

	Asset Derivatives
	September 30, 2017						December 31, 2016
	Balance Sheet Location		Notional Amount		Fair Value		Balance Sheet Location		Fair Value
Derivatives designated as hedging instruments Fair Value Hedges:
Interest rate swap contracts (hedging commercial loans)		Other assets	$	14,762	$	40		Other assets	$	24
Total derivatives designated as hedging instruments			$	14,762	$	40			$	24
Derivatives not designated as hedging instruments
Interest rate swap contracts		Other assets	$	0	$	0		Other assets	$	2,267
TBA mortgage-backed securities		Other assets		322,500		501		Other assets		0
Interest rate lock commitments		Other assets		169,588		7,027		Other assets		0
Total derivatives not designated as hedging instruments			$	492,088	$	7,528			$	2,267
Total asset derivatives			$	506,850	$	7,568			$	2,291

	Liability Derivatives
	September 30, 2017						December 31, 2016
	Balance Sheet Location		Notional Amount		Fair Value		Balance Sheet Location		Fair Value
Derivatives designated as hedging instruments Fair Value Hedges:
Interest rate swap contracts (hedging commercial loans)		Other liabilities	$	76,869	$	480		Other liabilities	$	338
Total derivatives designated as hedging instruments			$	76,869	$	480			$	338
Derivatives not designated as hedging instruments
Interest rate swap contracts		Other liabilities	$	0	$	0		Other liabilities	$	2,267
Forward loan sales commitments		Other liabilities		50,063		257		Other liabilities		0
Interest rate lock commitments		Other liabilities		65,862		291		Other liabilities		0
Total derivatives not designated as hedging instruments			$	115,925	$	548			$	2,267
Total liability derivatives			$	192,794	$	1,028			$	2,605

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 and nine months ended September 30, 2017 and 2016 are presented as follows:

				Three Months Ended
	Income Statement Location			September 30, 2017			September 30, 2016
Derivatives in hedging relationships Fair Value Hedges:
Interest rate swap contracts		Interest income/(expense	)	$	(208	)	$	(385	)
Total derivatives in hedging relationships				$	(208	)	$	(385	)
Derivatives not designated as hedging instruments
Forward loan sales commitments		Income from Mortgage Banking Activities			(257	)		0
TBA mortgage-backed securities		Income from Mortgage Banking Activities			123			0
Interest rate lock commitments		Income from Mortgage Banking Activities			(4,484	)		0
Total derivatives not designated as hedging instruments				$	(4,618	)	$	0
Total derivatives				$	(4,826	)	$	(385	)

				Nine Months Ended
	Income Statement Location			September 30, 2017			September 30, 2016
Derivatives in fair value hedging relationships Fair Value Hedges:
Interest rate swap contracts		Interest income/(expense	)	$	(648	)	$	353
Cash Flow Hedges:
Forward loan sales commitments		Other income			0			0
Total derivatives in hedging relationships				$	(648	)	$	353
Derivatives not designated as hedging instruments
Forward loan sales commitments		Income from Mortgage Banking Activities			(427	)		0
TBA mortgage-backed securities		Income from Mortgage Banking Activities			2,907			0
Interest rate lock commitments		Income from Mortgage Banking Activities			(3,465	)		0
Total derivatives not designated as hedging instruments				$	(985	)	$	0
Total derivatives				$	(1,633	)	$	353

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30, 2017 and December 31, 2016, segregated by the level of the valuation inputs within the fair value hierarchy.

			Fair Value at September 30, 2017 Using
Description	Balance as of September 30, 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	$	115,866	$	0	$	115,866	$	0
State and political subdivisions		305,141		0		305,141		0
Residential mortgage-backed securities
Agency		714,700		0		714,700		0
Non-agency		5,846		0		5,846		0
Commercial mortgage-backed securities
Agency		420,792		0		420,792		0
Asset-backed securities		13,429		0		13,429		0
Trust preferred collateralized debt obligations		31,659		0		0		31,659
Single issue trust preferred securities		12,467		0		12,467		0
Other corporate securities		19,254		0		19,254		0
Total available for sale debt securities		1,639,154		0		1,607,495		31,659
Available for sale equity securities:
Financial services industry		3,016		401		2,615		0
Equity mutual funds (1)		6,250		6,250		0		0
Other equity securities		1,214		1,214		0		0
Total available for sale equity securities		10,480		7,865		2,615		0
Total available for sale securities		1,649,634		7,865		1,610,110		31,659
Loans held for sale		311,186		0		0		311,186
Derivative financial assets:
Interest rate swap contracts		40		0		40		0
Interest rate lock commitments		7,027		0		0		7,027
TBA mortgage-backed securities		501		501		0		0
Total derivative financial assets		7,568		501		40		7,027
Liabilities
Derivative financial liabilities:
Interest rate swap contracts		480		0		480		0
Forward sales commitments		257		0		257		0
Interest rate lock commitments		291		0		291		0
Total derivative financial liabilities		1,028		0		1,028		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, 2016 Using
Description	Balance as of December 31, 2016		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	$	95,786	$	0	$	95,786	$	0
State and political subdivisions		192,812		0		192,812		0
Residential mortgage-backed securities
Agency		584,096		0		584,096		0
Non-agency		7,043		0		7,043		0
Asset-backed securities		217		0		217		0
Commercial mortgage-backed securities
Agency		305,341		0		305,341		0
Trust preferred collateralized debt obligations		33,552		0		0		33,552
Single issue trust preferred securities		11,477		0		11,477		0
Other corporate securities		15,062		0		15,062		0
Total available for sale debt securities		1,245,386		0		1,211,834		33,552
Available for sale equity securities:
Financial services industry		10,735		1,372		9,363		0
Equity mutual funds (1)		1,820		1,820		0		0
Other equity securities		1,273		1,273		0		0
Total available for sale equity securities		13,828		4,465		9,363		0
Total available for sale securities		1,259,214		4,465		1,221,197		33,552
Derivative financial assets:
Interest rate swap contracts		2,291		0		2,291		0
Liabilities
Derivative financial liabilities:
Interest rate swap contracts		2,605		0		2,605		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 September 30, 2017 and December 31, 2016 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
	September 30, 2017			December 31, 2016
Balance, beginning of period	$	33,552		$	34,686
Total gains or losses (realized/unrealized):
Included in earnings (or changes in net assets)		9			0
Included in other comprehensive income		6,148			(1,134	)
Sales		(8,050	)		0
Balance, end of period	$	31,659		$	33,552
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
	September 30, 2017			December 31, 2016
Balance, beginning of period	$	0		$	0
Acquired in Cardinal merger		271,301			0
Originations		1,644,943			0
Sales		(1,639,737	)		0
Total gains or losses during the period recognized in earnings		41,929			0
Transfers in and/or out of Level 3		(7,250	)		0
Balance, end of period	$	311,186		$	0
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
	September 30, 2017			December 31, 2016
Balance, beginning of period	$	0		$	0
Acquired in Cardinal merger		10,393			0
Transfers other		(3,366	)		0
Balance, end of period	$	7,027		$	0
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 September 30, 2017			Nine Months  Ended September 30, 2017
Assets
Loans held for sale
Income from mortgage banking activities	$	(5,090	)	$	(7,529	)

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:

	September 30, 2017						December 31, 2016
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	$	303,953	$	311,186	$	7,233	$	0	$	0	$	0

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 September 30, 2017
Description	Balance as of September 30, 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
Impaired Loans	$	105,900	$	0	$	74,852	$	31,048	$	9,045
OREO		26,826		0		26,743		83		2,904
			Carrying value at December 31, 2016
Description	Balance as of December 31, 2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		YTD Losses
Assets
Impaired Loans	$	80,505	$	0	$	27,609	$	52,896	$	5,119
OREO		31,510		0		31,510		0		2,086

Summary of Estimated Fair Values of Financial Instruments

The estimated fair values of United’s financial instruments 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)
September 30, 2017
Cash and cash equivalents	$	1,747,037	$	1,747,037	$	0	$	1,747,037	$	0
Securities available for sale		1,649,634		1,649,634		7,865		1,610,110		31,659
Securities held to maturity		20,335		19,909		0		16,889		3,020
Other securities		166,756		158,418		0		0		158,418
Loans held for sale		315,031		315,031		0		3,845		311,186
Loans		13,065,542		12,550,352		0		0		12,550,352
Derivative financial assets		7,568		7,568		501		40		7,027
Deposits		13,875,297		13,859,205		0		13,859,205		0
Short-term borrowings		492,036		492,036		0		492,036		0
Long-term borrowings		1,364,246		1,328,753		0		1,328,753		0
Derivative financial liabilities		1,028		1,028		0		1,028		0
December 31, 2016
Cash and cash equivalents	$	1,434,527	$	1,434,527	$	0	$	1,434,527	$	0
Securities available for sale		1,259,214		1,259,214		4,465		1,221,197		33,552
Securities held to maturity		33,258		31,178		0		28,158		3,020
Other securities		111,166		105,608		0		0		105,608
Loans held for sale		8,445		8,445		0		8,445		0
Loans		10,268,366		10,122,486		0		0		10,122,486
Derivative financial assets		2,291		2,291		0		2,291		0
Deposits		10,796,867		10,785,294		0		10,785,294		0
Short-term borrowings		209,551		209,551		0		209,551		0
Long-term borrowings		1,172,026		1,142,782		0		1,142,782		0
Derivative financial liabilities		2,605		2,605		0		2,605		0

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Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30, 2017, and the changes during the first nine months of 2017 are presented below:

	Nine Months Ended September 30, 2017
						Weighted Average
	Shares			Aggregate Intrinsic Value		Remaining Contractual Term (Yrs.)		Exercise Price
Outstanding at January 1, 2017		1,411,735						$	28.05
Assumed in Cardinal merger		153,602							21.47
Granted		253,417							45.27
Exercised		(163,562	)						20.93
Forfeited or expired		(2,962	)						38.81
Outstanding at September 30, 2017		1,652,230		$	12,602		5.8	$	30.76
Exercisable at September 30, 2017		1,138,309		$	11,964		4.5	$	26.64

Status of United's Nonvested Stock Option Awards

The following table summarizes the status of United’s nonvested stock option awards during the first nine months of 2017:

	Shares			Weighted-Average Grant Date Fair Value Per Share
Nonvested at January 1, 2017		430,278		$	6.84
Granted		253,417			8.85
Vested		(168,274	)		6.64
Forfeited or expired		(1,500	)		8.85
Nonvested at September 30, 2017		513,921		$	7.89

Changes to United's Restricted Common Shares

The following summarizes the changes to United’s restricted common shares for the period ended September 30, 2017:

	Number of Shares			Weighted-Average Grant Date Fair Value Per Share
Outstanding at January 1, 2017		137,268		$	33.61
Granted		89,475			45.27
Vested		(53,950	)		32.23
Forfeited		(420	)		45.30
Outstanding at September 30, 2017		172,373		$	40.07

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Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2017

Retirement Benefits [Abstract]

Net Periodic Pension Cost

Net periodic pension cost for the three and nine months ended September 30, 2017 and 2016 included the following components:

	Three Months Ended September 30						Nine Months Ended September 30
	2017			2016			2017			2016
Service cost	$	574		$	614		$	1,705		$	1,829
Interest cost		1,293			1,471			3,837			4,383
Expected return on plan assets		(2,072	)		(2,034	)		(6,148	)		(6,058	)
Recognized net actuarial loss		1,111			1,161			3,298			3,458
Net periodic pension (benefit) cost	$	906		$	1,212		$	2,692		$	3,612
Weighted-Average Assumptions:
Discount rate		4.49	%		4.75	%		4.49	%		4.75	%
Expected return on assets		7.00	%		7.25	%		7.00	%		7.25	%
Rate of compensation increase (prior to age 45)		3.50	%		3.50	%		3.50	%		3.50	%
Rate of compensation increase		3.00	%		3.00	%		3.00	%		3.00	%

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Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Components of Total Comprehensive Income

The components of total comprehensive income for the three and nine months ended September 30, 2017 and 2016 are as follows:

	Three Months Ended September 30						Nine Months Ended September 30
	2017			2016			2017			2016
Net Income	$	56,738		$	41,479		$	132,606		$	107,977
Available for sale (“AFS”) securities:
AFS securities with OTTI charges during the period		0			0			(60	)		(77	)
Related income tax effect		0			0			22			28
Less: OTTI charges recognized in net income		0			0			60			33
Related income tax benefit		0			0			(22	)		(12	)
Reclassification of previous noncredit OTTI to credit OTTI		0			0			0			415
Related income tax benefit		0			0			0			(150	)
Net unrealized (losses) gains on AFS securities with OTTI		0			0			0			237
AFS securities – all other:
Change in net unrealized gain on AFS securities arising during the period		3,584			(7,599	)		14,846			12,356
Related income tax effect		(1,326	)		2,735			(5,493	)		(4,489	)
Net reclassification adjustment for (gains) losses included in net income		(467	)		(1	)		(1,444	)		(251	)
Related income tax expense (benefit)		173			0			534			91
		1,964			(4,865	)		8,443			7,707
Net effect of AFS securities on other comprehensive income		1,964			(4,865	)		8,443			7,944
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			6			6
Related income tax expense		(0	)		(0	)		(2	)		(2	)
Net effect of HTM securities on other comprehensive income		2			2			4			4
Pension plan:
Recognized net actuarial loss		1,111			1,161			3,298			3,458
Related income tax benefit		(394	)		(384	)		(1,191	)		(1,223	)
Net effect of change in pension plan asset on other comprehensive income		717			777			2,107			2,235
Total change in other comprehensive income		2,683			(4,086	)		10,554			10,183
Total Comprehensive Income	$	59,421		$	37,393		$	143,160		$	118,160

Components of Accumulated Other Comprehensive Income

The components of accumulated other comprehensive income for the nine months ended September 30, 2017 are as follows:

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

For the Nine Months Ended September 30, 2017

	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, 2017	($	10,297	)	($	51	)	($	34,369	)	($	44,717	)
Other comprehensive income before reclassification		9,353			4			0			9,357
Amounts reclassified from accumulated other comprehensive income		(910	)		0			2,107			1,197
Net current-period other comprehensive income, net of tax		8,443			4			2,107			10,554
Balance at September 30, 2017	($	1,854	)	($	47	)	($	32,262	)	($	34,163	)

Reclassifications Out of Accumulated Other Comprehensive Income

Reclassifications out of Accumulated Other Comprehensive Income (AOCI)

For the Nine Months Ended September 30, 2017

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		Total other-than-temporary impairment losses
Net reclassification adjustment for losses (gains) included in net income		(1,444	)	Net gains on sales/calls of investment securities
		(1,444	)	Total before tax
Related income tax effect		534		Tax expense
		(910	)	Net of tax
Pension plan:
Recognized net actuarial loss		3,298	(a)
		3,298		Total before tax
Related income tax effect		(1,191	)	Tax expense
		2,107		Net of tax
Total reclassifications for the period	$	1,197

(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)

9 Months Ended

Sep. 30, 2017

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				Nine Months Ended
	September 30				September 30
	2017		2016		2017		2016
Distributed earnings allocated to common stock	$	34,587	$	25,174	$	95,871	$	73,242
Undistributed earnings allocated to common stock		22,065		16,234		36,518		34,545
Net earnings allocated to common shareholders	$	56,652	$	41,408	$	132,389	$	107,787
Average common shares outstanding		104,760,153		76,218,573		95,040,664		72,413,246
Equivalents from stock options		307,969		429,200		409,962		333,117
Average diluted shares outstanding		105,068,122		76,647,773		95,450,626		72,746,363
Earnings per basic common share	$	0.54	$	0.54	$	1.39	$	1.49
Earnings per diluted common share	$	0.54	$	0.54	$	1.39	$	1.48

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Variable Interest Entities (Tables)

9 Months Ended

Sep. 30, 2017

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
Century Trust	March 23, 2000	$	8,800	10.875% Fixed	March 8, 2030
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 September 30, 2017						As of December 31, 2016
	Aggregate Assets		Aggregate Liabilities		Risk Of Loss (1)		Aggregate Assets		Aggregate Liabilities		Risk Of Loss (1)
Trust preferred securities	$	266,560	$	257,605	$	8,955	$	240,668	$	232,583	$	8,085

(1) Represents investment in VIEs.

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Segment Information (Tables)

9 Months Ended

Sep. 30, 2017

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 and nine months ended September 30, 2017 and 2016 is as follows:

	At and For the Three Months Ended September 30, 2017
	Community Banking		Mortgage Banking			Other			Consolidated
Net interest income	$	152,886	$	(36	)	$	(2,574	)	$	150,276
Provision for loans losses		7,279		0			0			7,279
Other income		18,373		19,936			(80	)		38,229
Other expense		74,553		24,036			(1,937	)		96,652
Income taxes		29,490		(1,332	)		(322	)		27,836
Net income (loss)	$	59,937	$	(2,804	)	$	(395	)	$	56,738
Total assets (liabilities)	$	18,780,395	$	350,483		$	(900	)	$	19,129,978
Average assets (liabilities)		18,620,035		321,744			(13,994	)		18,927,785

	At and For the Three Months Ended September 30,  2016
	Community Banking		Other			Consolidated
Net interest income	$	113,033	$	(1,964	)	$	111,069
Provision for loans losses		6,988		0			6,988
Other income		19,666		(645	)		19,021
Other expense		63,009		(232	)		62,777
Income taxes		19,729		(883	)		18,846
Net income (loss)	$	42,973	$	(1,494	)	$	41,479
Total assets (liabilities)	$	14,364,797	$	(20,101	)	$	14,344,696
Average assets (liabilities)		14,182,202		(22,633	)		14,159,569

	At and For the Nine Months Ended September 30, 2017
	Community Banking		Mortgage Banking			Other			Consolidated
Net interest income	$	401,044	$	54		$	(6,957	)	$	394,141
Provision for loans losses		21,429		0			0			21,429
Other income		53,409		42,329			3,143			98,881
Other expense		215,935		42,744			12,952			271,631
Income taxes		73,214		(39	)		(5,819	)		67,356
Net income (loss)	$	143,875	$	(322	)	$	(10,947	)	$	132,606
Total assets (liabilities)	$	18,780,395	$	350,483		$	(900	)	$	19,129,978
Average assets (liabilities)		17,020,928		187,118			(20,402	)		17,187,644

	At and For the Nine Months Ended September 30,  2016
	Community Banking		Other			Consolidated
Net interest income	$	317,835	$	(5,757	)	$	312,078
Provision for loans losses		18,690		0			18,690
Other income		55,323		(1,943	)		53,380
Other expense		186,322		(634	)		185,688
Income taxes		55,580		(2,477	)		53,103
Net income (loss)	$	112,566	$	(4,589	)	$	107,977
Total assets (liabilities)	$	14,364,797	$	(20,101	)	$	14,344,696
Average assets (liabilities)		13,125,973		(21,575	)		13,104,398

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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Sep. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase to net cash from operating activity		$ 125,151	$ 125,948
Decrease to net cash from financing activities		(197,092)	231,756
ASU 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease in income tax expense	$ 146	$ 960
Increase to net cash from operating activity			2,083
Decrease to net cash from financing activities			$ (2,083)

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Mergers and Acquisitions - Additional Information (Detail) - USD ($)				9 Months Ended
	Sep. 30, 2017	Apr. 21, 2017	Jun. 03, 2016	Sep. 30, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Total assets at consummation	$ 19,129,978,000			$ 19,129,978,000	$ 14,508,892,000
Loans at consummation	13,156,854,000			13,156,854,000	10,356,719,000
Deposits at consummation	13,875,297,000			13,875,297,000	10,796,867,000
Resulting goodwill	1,487,607,000			1,487,607,000	$ 863,767,000
Liabilities to provide severance benefits	$ 0			$ 0
Contractually required principal and interest at acquisition		$ 132,837	$ 138,125
Expected cash flows at acquisition		108,275	117,564
Estimated fair value of acquired impaired loans at acquisition		$ 86,696	95,570
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
Loans at consummation		3,313,033
Deposits at consummation		3,344,740
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		$ 622,513,000
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
Premium on long-term FHLB advances acquired		10,740,000
Estimated remaining life of discount on leases acquired	6 years
Estimated remaining life of discount on trust preferred issuances acquired	16 years 11 months 19 days
Estimated remaining life of premium on interest-bearing deposits acquired	5 years
Estimated remaining life of the FHLB advances acquired	4 years 9 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				$ 157,326
Revenue since acquisition included in consolidated results				$ 81,817
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		$ 28,723,000
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		$ 1,230
Bank of Georgetown [Member]
Business Acquisition [Line Items]
Outstanding common stock acquired	100.00%			100.00%
Total assets at consummation	$ 1,278,837			$ 1,278,837
Loans at consummation	999,773			999,773
Deposits at consummation	971,369			971,369
Common stock paid in cash			264,505,000
Common stock value			253,799,000
Stock options exchanged value			$ 10,696,000
Common stock, shares issued			6,527,746
Resulting goodwill			$ 154,172,000
Fractional shares cash paid per share			10,000
Goodwill from acquisition expected to be tax deductible			0
Fair value discounts on loans acquired			43,072
Fair value discounts on leases				1,550
Premiums on interest-bearing deposits acquired			316,000
Premium on long-term FHLB advances acquired	$ 2,659			2,659
Estimated remaining life of premium on interest-bearing deposits acquired	3 months 29 days
Estimated remaining life of the FHLB advances acquired	7 years 11 months 1 day
Assumed liabilities to provide severance benefits	$ 300,000			$ 300,000
Contractually required principal and interest at acquisition			1,275,398,000
Expected cash flows at acquisition			1,241,418,000
Estimated fair value of acquired impaired loans at acquisition			966,870,000
Bank of Georgetown [Member] | Common Stock [Member]
Business Acquisition [Line Items]
Common stock value			$ 253,799,000
Common stock, shares issued			6,527,746
Closing market price per common share			$ 38.88
Bank of Georgetown [Member] | Core Deposit Intangible Assets [Member]
Business Acquisition [Line Items]
Purchase price allocation of Identifiable Intangible assets			$ 9,058,000
Estimated period of amortization of core deposit intangibles			10 years
Fractional shares cash paid per share			$ 10,000

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Mergers and Acquisitions - Schedule of Acquired Loans Accounted for at Fair Value (Detail) - USD ($)	Apr. 21, 2017	Jun. 03, 2016
Business Acquisition [Line Items]
Contractually required principal and interest at acquisition	$ 132,837	$ 138,125
Expected cash flows at acquisition	108,275	117,564
Basis in acquired loans at acquisition - estimated fair value	86,696	95,570
Cardinal Financial Corporation [Member]
Business Acquisition [Line Items]
Contractually required principal and interest at acquisition	4,211,734,000
Contractual cash flows not expected to be collected	(56,176,000)
Expected cash flows at acquisition	4,155,558,000
Interest component of expected cash flows	(986,959,000)
Basis in acquired loans at acquisition - estimated fair value	$ 3,168,599,000
Bank of Georgetown [Member]
Business Acquisition [Line Items]
Contractually required principal and interest at acquisition		1,275,398,000
Contractual cash flows not expected to be collected		(33,980,000)
Expected cash flows at acquisition		1,241,418,000
Interest component of expected cash flows		(274,548,000)
Basis in acquired loans at acquisition - estimated fair value		$ 966,870,000

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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	Jun. 03, 2016	Sep. 30, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Resulting goodwill			$ 1,487,607	$ 863,767
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	4,069,818
Deposits	3,349,812
Short-term borrowings	96,215
Long-term borrowings	220,119
Unfavorable lease liability	2,281
Other liabilities	48,650
Total identifiable liabilities	3,717,077
Fair value of net assets acquired including identifiable intangible assets	352,741
Resulting goodwill	622,513
Cardinal Financial Corporation [Member] | Core Deposit Intangible Assets [Member]
Business Acquisition [Line Items]
Cash for fractional shares	14
Core deposit intangibles	28,723
Cardinal Financial Corporation [Member] | George Mason Trade Name Intangible [Member]
Business Acquisition [Line Items]
Core deposit intangibles	$ 1,230
Bank of Georgetown [Member]
Business Acquisition [Line Items]
Value of common shares issued		$ 253,799
Fair value of stock options assumed		10,696
Cash for fractional shares		10
Total purchase price		264,505
Cash and cash equivalents		29,340
Investment securities		219,783
Loans		966,870
Premises and equipment		5,574
Other assets		31,605
Total identifiable assets		1,262,230
Deposits		971,685
Short-term borrowings		101,021
Long-term borrowings		67,659
Other liabilities		11,532
Total identifiable liabilities		1,151,897
Fair value of net assets acquired including identifiable intangible assets		110,333
Resulting goodwill		154,172
Bank of Georgetown [Member] | Core Deposit Intangible Assets [Member]
Business Acquisition [Line Items]
Cash for fractional shares		10
Core deposit intangibles		$ 9,058

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Mergers and Acquisitions - Schedule of Fair Value of Acquired Identifiable Assets and Liabilities Assumed (Parenthetical) (Detail) - shares	Apr. 21, 2017	Jun. 03, 2016
Cardinal Financial Corporation [Member]
Business Acquisition [Line Items]
Common stock, shares issued	23,690,589
Bank of Georgetown [Member]
Business Acquisition [Line Items]
Common stock, shares issued		6,527,746

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Mergers and Acquisitions - Schedule of Business Acquisition Pro Forma Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Business Combinations [Abstract]
Total Revenues	$ 573,790	$ 585,223
Net Income	$ 136,104	$ 160,731

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Investment Securities - Summary of Amortized Cost and Estimated Fair Values of Available for Sale Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Investments [Line Items]
Amortized Cost	$ 1,654,657	$ 1,277,639
Gross Unrealized Gains	11,446	10,912
Gross Unrealized Losses	16,469	29,337
Estimated Fair Value	1,649,634	1,259,214
Cumulative OTTI in AOCI	20,856	26,038
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	115,224	95,247
Gross Unrealized Gains	864	698
Gross Unrealized Losses	222	159
Estimated Fair Value	115,866	95,786
Cumulative OTTI in AOCI	0	0
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Amortized Cost	305,096	196,350
Gross Unrealized Gains	2,567	1,364
Gross Unrealized Losses	2,522	4,902
Estimated Fair Value	305,141	192,812
Cumulative OTTI in AOCI	0	0
Residential Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Amortized Cost	715,003	585,208
Gross Unrealized Gains	3,819	3,999
Gross Unrealized Losses	4,122	5,111
Estimated Fair Value	714,700	584,096
Cumulative OTTI in AOCI	0	0
Residential Mortgage-Backed Securities, Non-agency [Member]
Schedule of Investments [Line Items]
Amortized Cost	5,259	6,629
Gross Unrealized Gains	587	426
Gross Unrealized Losses	0	12
Estimated Fair Value	5,846	7,043
Cumulative OTTI in AOCI	86	86
Commercial Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Amortized Cost	420,115	304,635
Gross Unrealized Gains	2,081	1,948
Gross Unrealized Losses	1,404	1,242
Estimated Fair Value	420,792	305,341
Cumulative OTTI in AOCI	0	0
Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	13,422	217
Gross Unrealized Gains	10	0
Gross Unrealized Losses	3	0
Estimated Fair Value	13,429	217
Cumulative OTTI in AOCI	0	0
Trust Preferred Collateralized Debt Obligations [Member]
Schedule of Investments [Line Items]
Amortized Cost	38,186	48,558
Gross Unrealized Gains	317	729
Gross Unrealized Losses	6,844	15,735
Estimated Fair Value	31,659	33,552
Cumulative OTTI in AOCI	20,770	25,952
Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	13,404	13,363
Gross Unrealized Gains	404	284
Gross Unrealized Losses	1,341	2,170
Estimated Fair Value	12,467	11,477
Cumulative OTTI in AOCI	0	0
Corporate Bonds [Member]
Schedule of Investments [Line Items]
Amortized Cost	18,998	14,996
Gross Unrealized Gains	256	66
Gross Unrealized Losses	0	0
Estimated Fair Value	19,254	15,062
Cumulative OTTI in AOCI	0	0
Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	9,950	12,436
Gross Unrealized Gains	541	1,398
Gross Unrealized Losses	11	6
Estimated Fair Value	10,480	13,828
Cumulative OTTI in AOCI	$ 0	$ 0

XML

Investment Securities - Summary of Securities Available for Sale in an Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	$ 697,366	$ 612,613
Less than 12 months, Unrealized Losses	5,655	11,420
12 months or longer, Fair Value	136,159	36,982
12 months or longer, Unrealized Losses	10,814	17,917
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	27,053	24,101
Less than 12 months, Unrealized Losses	128	159
12 months or longer, Fair Value	19,932	0
12 months or longer, Unrealized Losses	94	0
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	83,310	116,300
Less than 12 months, Unrealized Losses	896	4,902
12 months or longer, Fair Value	38,004	0
12 months or longer, Unrealized Losses	1,626	0
Residential Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	351,936	309,376
Less than 12 months, Unrealized Losses	3,410	5,111
12 months or longer, Fair Value	31,690	0
12 months or longer, Unrealized Losses	712	0
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	218
12 months or longer, Unrealized Losses	0	12
Commercial Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	228,307	162,479
Less than 12 months, Unrealized Losses	1,218	1,242
12 months or longer, Fair Value	12,272	0
12 months or longer, Unrealized Losses	186	0
Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	6,760	0
Less than 12 months, Unrealized Losses	3	0
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	29,544	28,579
12 months or longer, Unrealized Losses	6,844	15,735
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	4,365	8,185
12 months or longer, Unrealized Losses	1,341	2,170
Marketable Equity Securities [Member]
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	0	357
Less than 12 months, Unrealized Losses	0	6
12 months or longer, Fair Value	352	0
12 months or longer, Unrealized Losses	$ 11	$ 0

XML

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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales and calls	$ 64,257	$ 174,015	$ 631,561	$ 368,246
Gross realized gains	1,781	3	2,840	259
Gross realized losses	$ 1,314	$ 1	$ 1,396	$ 7

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Investment Securities - Additional Information (Detail)	3 Months Ended		9 Months Ended		96 Months Ended
	Sep. 30, 2017 USD ($) Securities	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) Securities	Sep. 30, 2016 USD ($)	Dec. 31, 2007 USD ($)	Dec. 31, 2016 USD ($)
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	$ 16,469,000		$ 16,469,000			$ 29,337,000
Available for sale securities in unrealized loss position | Securities	375		375
Available for sale securities in portfolio, number | Securities	822		822
Amortized cost of available for sale securities	$ 1,654,657,000		$ 1,654,657,000			1,277,639,000
Capitalization of banks, equal to or greater than, in the single-issue trust preferred portfolio	10,000,000,000		10,000,000,000
Noncredit-related other-than-temporary impairment recognized	20,856,000		$ 20,856,000			26,038,000
New issuance of Preferred Stock estimated					$ 60,000,000,000
Security other-than-temporarily impaired			100.00%
Amortized cost of equity securities	9,950		$ 9,950
Gross realized gains	0	$ 0	0	$ 0
Gross realized losses	0	$ 0	0	$ 0
Carrying value of securities pledged	1,312,813		1,312,813			1,137,408
TRUP CDOs [Member]
Schedule of Investments [Line Items]
Credit-related other-than-temporary impairment recognized in earnings	0
Noncredit-related other-than-temporary impairment recognized	20,770		20,770
SunTrust Bank [Member]
Schedule of Investments [Line Items]
Amortized cost of trust preferred securities	7,424,000		7,424,000
Royal Bank of Scotland [Member]
Schedule of Investments [Line Items]
Amortized cost of trust preferred securities	976,000		$ 976,000
Minimum [Member]
Schedule of Investments [Line Items]
Other-than-temporarily impaired, the collateralization ratios			105.40%
Maximum [Member]
Schedule of Investments [Line Items]
Other-than-temporarily impaired, the collateralization ratios			414.50%
Weighted Average [Member]
Schedule of Investments [Line Items]
Other-than-temporarily impaired, the collateralization ratios			283.80%
Median [Member]
Schedule of Investments [Line Items]
Other-than-temporarily impaired, the collateralization ratios			260.00%
Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale single issue trust preferred securities	3,017		$ 3,017
Below Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale single issue trust preferred securities	5,707		5,707
Split Rated [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale single issue trust preferred securities	4,680		4,680
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	2,522,000		2,522,000			4,902,000
Amortized cost of available for sale securities	$ 305,096,000		$ 305,096,000			196,350,000
Percent of portfolio with credit support	75.00%		75.00%
Investment grade credit rate percentage			1.00%
Number of equity securities other-than-temporarily impaired | Securities	0		0
Noncredit-related other-than-temporary impairment recognized	$ 0		$ 0			0
Agency Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale securities	1,135,118,000		1,135,118,000
Commercial Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	1,404,000		1,404,000			1,242,000
Amortized cost of available for sale securities	420,115,000		420,115,000			304,635,000
Noncredit-related other-than-temporary impairment recognized	0		0			0
Residential Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	4,122,000		4,122,000			5,111,000
Amortized cost of available for sale securities	715,003,000		715,003,000			585,208,000
Noncredit-related other-than-temporary impairment recognized	0		0			0
Residential Mortgage-Backed Securities, Non-agency [Member]
Schedule of Investments [Line Items]
Gross unrealized losses on available for sale securities	0		0			12,000
Amortized cost of available for sale securities	5,259,000		5,259,000			6,629,000
Noncredit-related other-than-temporary impairment recognized	86,000		$ 86,000			$ 86,000
Residential Mortgage-Backed Securities, Non-agency [Member] | Originated Prior to 2005 [Member]
Schedule of Investments [Line Items]
Percentage of portfolio of non-agency mortgage backed securities with collateral			18.00%
Residential Mortgage-Backed Securities, Non-agency [Member] | Originated in 2006 and 2007 [Member]
Schedule of Investments [Line Items]
Percentage of portfolio of non-agency mortgage backed securities with collateral			82.00%
Residential Mortgage-Backed Securities, Non-agency [Member] | Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale securities	627,000		$ 627,000
Residential Mortgage-Backed Securities, Non-agency [Member] | Below Investment Grade [Member]
Schedule of Investments [Line Items]
Amortized cost of available for sale securities	$ 4,632,000		$ 4,632,000

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Investment Securities - Summary of Unrealized Loss Positions of Available for Sale TRUP CDOs and Single Issue Trust Preferred Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Investments [Line Items]
Amortized Cost	$ 1,654,657	$ 1,277,639
Fair Value	1,649,634	$ 1,259,214
Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	38,186
Fair Value	31,659
Net Unrealized Loss	6,527
Senior - Bank [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	5,208
Fair Value	5,287
Net Unrealized Loss	(79)
Mezzanine - Bank (now in senior position) [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	6,428
Fair Value	5,518
Net Unrealized Loss	910
Mezzanine - Bank [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	22,656
Fair Value	17,918
Net Unrealized Loss	4,738
Mezzanine - Bank & Insurance (combination) [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	3,894
Fair Value	2,936
Net Unrealized Loss	958
Investment Grade [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	3,410
Investment Grade [Member] | Senior - Bank [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	3,410
Investment Grade [Member] | Mezzanine - Bank (now in senior position) [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	0
Investment Grade [Member] | Mezzanine - Bank [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	0
Investment Grade [Member] | Mezzanine - Bank & Insurance (combination) [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	0
Split Rated [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	0
Split Rated [Member] | Senior - Bank [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	0
Split Rated [Member] | Mezzanine - Bank (now in senior position) [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	0
Split Rated [Member] | Mezzanine - Bank [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	0
Split Rated [Member] | Mezzanine - Bank & Insurance (combination) [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	0
Below Investment Grade [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	34,776
Below Investment Grade [Member] | Senior - Bank [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	1,798
Below Investment Grade [Member] | Mezzanine - Bank (now in senior position) [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	6,428
Below Investment Grade [Member] | Mezzanine - Bank [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	22,656
Below Investment Grade [Member] | Mezzanine - Bank & Insurance (combination) [Member] | Trup CDOs and Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	$ 3,894

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Investment Securities - Roll Forward of Credit Losses on Securities (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Cumulative credit losses, Beginning Balance	$ 22,162	$ 22,162	$ 22,162	$ 23,773
Additional credit losses on securities for which OTTI was previously recognized	0	0	0	33
Reductions during the period for securities for which the amount previously recognized in other comprehensive income was recognized in earnings	(4,102)	0	(4,102)	(1,644)
Cumulative credit losses, Ending Balance	$ 18,060	$ 22,162	$ 18,060	$ 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	Sep. 30, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 57,720	$ 53,286
Due after one year through five years, Amortized Cost	370,020	296,181
Due after five years through ten years, Amortized Cost	342,176	213,094
Due after ten years, Amortized Cost	874,791	702,642
Marketable equity securities, Amortized Cost	9,950	12,436
Amortized Cost	1,654,657	1,277,639
Due in one year or less, Estimated Fair Value	57,622	53,330
Due after one year through five years, Estimated Fair Value	371,007	297,385
Due after five years through ten years, Estimated Fair Value	343,326	213,791
Due after ten years, Estimated Fair Value	867,199	680,880
Marketable equity securities, Estimated Fair Value	10,480	13,828
Total available for sale securities	$ 1,649,634	$ 1,259,214

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Investment Securities - Summary of Amortized Cost and Estimated Fair Values of Securities Held to Maturity (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Schedule of Investments [Line Items]
Amortized Cost	$ 20,335	$ 33,258
Gross Unrealized Gains	416	592
Gross Unrealized Losses	842	2,672
Estimated Fair Value	19,909	31,178
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	5,215	5,295
Gross Unrealized Gains	400	570
Gross Unrealized Losses	0	0
Estimated Fair Value	5,615	5,865
State and Political Subdivisions [Member]
Schedule of Investments [Line Items]
Amortized Cost	5,674	8,598
Gross Unrealized Gains	12	17
Gross Unrealized Losses	0	0
Estimated Fair Value	5,686	8,615
Residential Mortgage-Backed Securities, Agency [Member]
Schedule of Investments [Line Items]
Amortized Cost	26	30
Gross Unrealized Gains	4	5
Gross Unrealized Losses	0	0
Estimated Fair Value	30	35
Single Issue Trust Preferred Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	9,400	19,315
Gross Unrealized Gains	0	0
Gross Unrealized Losses	842	2,672
Estimated Fair Value	8,558	16,643
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

XML

Investment Securities - Summary of Maturities of Debt Securities Held to Maturity by Amortized Cost and Estimated Fair Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 0	$ 1,040
Due after one year through five years, Amortized Cost	9,189	8,268
Due after five years through ten years, Amortized Cost	5,726	3,585
Due after ten years, Amortized Cost	5,420	20,365
Amortized Cost	20,335	33,258
Due in one year or less, Estimated Fair Value	0	1,041
Due after one year through five years, Estimated Fair Value	9,600	8,850
Due after five years through ten year, Estimated Fair Value	5,382	3,589
Due after ten years, Estimated Fair Value	4,927	17,698
Estimated Fair Value, Total	$ 19,909	$ 31,178

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Loans - Major Classes of Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Commercial, financial, and agricultural
Total commercial, financial & agricultural	$ 7,808,681	$ 6,088,775
Residential real estate	3,050,868	2,403,437
Construction & land development	1,599,632	1,255,738
Consumer:
Bankcard	13,775	14,187
Other consumer	683,898	594,582
Total Financing Receivables	13,156,854	10,356,719
Owner-Occupied [Member]
Commercial, financial, and agricultural
Total commercial, financial & agricultural	1,364,757	1,049,885
Nonowner-Occupied [Member]
Commercial, financial, and agricultural
Total commercial, financial & agricultural	4,686,183	3,425,453
Other Commercial Loans [Member]
Commercial, financial, and agricultural
Total commercial, financial & agricultural	$ 1,757,741	$ 1,613,437

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Loans - Additional Information (Detail) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Loans held for sale	$ 315,031,000	$ 8,445,000
Acquired impaired loans from merger	$ 13,156,854,000	10,356,719,000
Percentage of acquired impaired loans from merger on total gross loans	1.73%
Recorded investment in acquired impaired loans	$ 227,754,000	231,096,000
Directors and Officers [Member]
Related party loans	364,774	$ 255,476
Maximum [Member]
Percentage of acquired impaired loans from merger on total gross loans		1.66%
Loans Acquired with Deteriorated Credit Quality [Member]
Acquired impaired loans from merger	$ 227,754,000	$ 171,596,000

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Loans - Activity for Accretable Yield (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2017 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	$ 29,165
Accretion (including cash recoveries)	(11,312)
Additions	17,444
Net reclassifications to accretable from non-accretable	2,727
Disposals (including maturities, foreclosures, and charge-offs)	(2,367)
Accretable yield at the end of the period	$ 35,657

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Credit Quality - Additional Information (Detail)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2016 USD ($) SecurityLoan	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($) SecurityLoan	Dec. 31, 2016 USD ($)
Receivables [Abstract]
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		$ 46,132		$ 21,152
Restructured loans on nonaccrual status		29,717		11,106
Restructured loans modified by reduction in interest		2,043
Restructured loan and interest		4,507
Restructured loans modified by change in terms		39,582
Restructured loans modified by reduction in interest rate and change in terms			$ 1,400,000
Restructured loans modified by change in loan terms amount	$ 110,000	$ 29,024,000	$ 2,909,000
Number of loans restructured | SecurityLoan	0		0
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		$ 26,826,000		31,510,000
Recorded investment of consumer mortgage loans		$ 116,000		$ 660,000

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Credit Quality - Schedule of Troubled Debt Restructurings, Segregated by Class of Loans (Detail) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016 USD ($) Contract	Sep. 30, 2017 USD ($) Contract	Sep. 30, 2016 USD ($) Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1	10	7
Pre-Modification Outstanding Recorded Investment	$ 110	$ 30,891	$ 4,840
Post-Modification Outstanding Recorded Investment	$ 110	$ 29,024	$ 4,309
Construction & Land Development [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	1	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 1,456	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 1,400	$ 0
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	1	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 5,333	$ 1,190
Post-Modification Outstanding Recorded Investment	$ 0	$ 5,333	$ 1,184
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Other Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1	8	5
Pre-Modification Outstanding Recorded Investment	$ 110	$ 24,102	$ 2,250
Post-Modification Outstanding Recorded Investment	$ 110	$ 22,291	$ 1,725
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 1,400
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 1,400
Consumer [Member] | Bankcard [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0

XML

Credit Quality - Schedule of Charged-off Troubled Debt Restructurings on Financing Receivables (Detail) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017 USD ($) Contract	Sep. 30, 2017 USD ($) Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1	1
Recorded Investment | $	$ 1,495	$ 1,495
Construction & Land Development [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Recorded Investment | $	$ 0	$ 0
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Recorded Investment | $	$ 0	$ 0
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Recorded Investment | $	$ 0	$ 0
Other Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1	1
Recorded Investment | $	$ 1,495	$ 1,495
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Recorded Investment | $	$ 0	$ 0
Consumer [Member] | Bankcard [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Recorded Investment | $	$ 0	$ 0
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0
Recorded Investment | $	$ 0	$ 0

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Credit Quality - Schedule of Age Analysis of its Past Due Loans, Segregated by Class of Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	$ 76,456	$ 74,633
Loans, Total Past Due	228,438	177,850
Loans, Current & Other	12,928,416	10,178,869
Total Financing Receivables	13,156,854	10,356,719
Loans, Recorded Investment >90 Days & Accruing	22,249	8,586
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, Total Past Due	151,982	103,217
Construction & Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	3,351	3,809
Loans, Total Past Due	21,203	11,588
Loans, Current & Other	1,578,429	1,244,150
Total Financing Receivables	1,599,632	1,255,738
Loans, Recorded Investment >90 Days & Accruing	14,828	33
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	17,852	7,779
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	9,704	5,850
Loans, Total Past Due	16,616	9,831
Loans, Current & Other	1,348,141	1,040,054
Total Financing Receivables	1,364,757	1,049,885
Loans, Recorded Investment >90 Days & Accruing	0	94
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	6,912	3,981
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	7,686	9,288
Loans, Total Past Due	28,483	30,135
Loans, Current & Other	4,657,700	3,395,318
Total Financing Receivables	4,686,183	3,425,453
Loans, Recorded Investment >90 Days & Accruing	0	172
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	20,797	20,847
Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	13,589	15,273
Loans, Total Past Due	92,931	58,039
Loans, Current & Other	1,664,810	1,555,398
Total Financing Receivables	1,757,741	1,613,437
Loans, Recorded Investment >90 Days & Accruing	802	2,518
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	79,342	42,766
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	33,654	29,976
Loans, Total Past Due	59,218	55,967
Loans, Current & Other	2,991,650	2,347,470
Total Financing Receivables	3,050,868	2,403,437
Loans, Recorded Investment >90 Days & Accruing	5,298	4,216
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	25,564	25,991
Consumer [Member] | Bankcard [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	385	422
Loans, Total Past Due	595	563
Loans, Current & Other	13,180	13,624
Total Financing Receivables	13,775	14,187
Loans, Recorded Investment >90 Days & Accruing	210	141
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	210	141
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans, 30-89 Days Past Due	8,087	10,015
Loans, Total Past Due	9,392	11,727
Loans, Current & Other	674,506	582,855
Total Financing Receivables	683,898	594,582
Loans, Recorded Investment >90 Days & Accruing	1,111	1,412
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	$ 1,305	$ 1,712

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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	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Acquired impaired loans from merger	$ 13,156,854	$ 10,356,719
Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Acquired impaired loans from merger	227,754	171,596
Loans and Debt Securities Acquired with Deteriorated Credit Quality [Member] | Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Acquired impaired loans from merger	$ 227,754	$ 171,596

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Credit Quality - Schedule of Nonaccrual Loans, Segregated by Class of Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	$ 129,733	$ 94,631
Construction & Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	3,024	7,746
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	6,912	3,887
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	20,797	20,675
Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	78,540	40,248
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	20,266	21,775
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	$ 194	$ 300

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Credit Quality - Schedule of Credit Quality Indicators Information, by Class of Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	$ 13,156,854	$ 10,356,719
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	3,050,868	2,403,437
Other Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,757,741	1,613,437
Bankcard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	13,775	14,187
Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	683,898	594,582
Owner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,364,757	1,049,885
Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	4,686,183	3,425,453
Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,599,632	1,255,738
Pass [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	2,999,614	2,348,017
Pass [Member] | Other Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,611,250	1,463,797
Pass [Member] | Bankcard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	13,180	13,624
Pass [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	674,447	582,704
Pass [Member] | Owner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,282,657	963,503
Pass [Member] | Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	4,544,799	3,284,497
Pass [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,498,656	1,126,742
Special Mention [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	18,953	18,240
Special Mention [Member] | Other Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	47,450	26,537
Special Mention [Member] | Bankcard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	385	422
Special Mention [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	8,134	10,132
Special Mention [Member] | Owner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	23,827	20,490
Special Mention [Member] | Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	44,080	36,462
Special Mention [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	19,872	52,327
Substandard [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	32,301	36,995
Substandard [Member] | Other Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	98,933	122,893
Substandard [Member] | Bankcard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	210	141
Substandard [Member] | Other Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	1,317	1,746
Substandard [Member] | Owner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	58,273	65,892
Substandard [Member] | Nonowner-Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	97,304	104,494
Substandard [Member] | Construction & Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	81,104	76,669
Doubtful [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	0	185
Doubtful [Member] | Other Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, credit quality indicators information	108	210
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

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Credit Quality - Schedule of Impaired Loans Information by Class of Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Construction & Land Development [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	$ 30,959		$ 30,959		$ 19,863
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	33,225		33,225		21,746
Impaired Loans, Recorded Investment, With an allowance recorded	1,411		1,411		4,940
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	5,910		5,910		7,899
Impaired Loans, Related Allowance	488		488		3,206
Impaired Loans, Recorded Investment	32,370		32,370		24,803
Impaired Loans, Unpaid Principal Balance	39,135		39,135		29,645
Impaired Loans, Related Allowance	488		488		3,206
Impaired Loans, Average Recorded Investment, With no related allowance recorded	23,846	$ 28,730	20,706	$ 26,559
Impaired Loans, Interest Income Recognized, With no related allowance recorded	552	46	563	112
Impaired Loans, Average Recorded Investment, With an allowance recorded	1,641	8,591	2,872	10,300
Impaired Loans, Interest Income Recognized, With an allowance recorded	21	56	64	146
Impaired Loans, Average Recorded Investment	25,487	37,321	23,578	36,859
Impaired Loans, Interest Income Recognized	573	102	627	258
Bankcard [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Average Recorded Investment, With no related allowance recorded	0	0	0	0
Impaired Loans, Interest Income Recognized, With no related allowance recorded	0	0	0	0
Other Consumer [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Average Recorded Investment, With no related allowance recorded	25	35	29	32
Impaired Loans, Interest Income Recognized, With no related allowance recorded	0	0	0	0
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	64,592		64,592		46,575
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	65,355		65,355		47,108
Impaired Loans, Recorded Investment, With an allowance recorded	8,220		8,220		1,787
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	8,220		8,220		2,082
Impaired Loans, Related Allowance	923		923		815
Impaired Loans, Recorded Investment	72,812		72,812		48,362
Impaired Loans, Unpaid Principal Balance	73,575		73,575		49,190
Impaired Loans, Related Allowance	923		923		815
Impaired Loans, Average Recorded Investment, With no related allowance recorded	58,980	38,199	55,506	34,030
Impaired Loans, Interest Income Recognized, With no related allowance recorded	376	531	1,011	715
Impaired Loans, Average Recorded Investment, With an allowance recorded	11,624	3,353	9,392	3,603
Impaired Loans, Interest Income Recognized, With an allowance recorded	131	36	424	92
Impaired Loans, Average Recorded Investment	70,604	41,552	64,898	37,633
Impaired Loans, Interest Income Recognized	507	567	1,435	807
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	143,100		143,100		92,654
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	143,552		143,552		93,104
Impaired Loans, Recorded Investment, With an allowance recorded	12,182		12,182		17,938
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	12,182		12,182		17,938
Impaired Loans, Related Allowance	1,786		1,786		2,524
Impaired Loans, Recorded Investment	155,282		155,282		110,592
Impaired Loans, Unpaid Principal Balance	155,734		155,734		111,042
Impaired Loans, Related Allowance	1,786		1,786		2,524
Impaired Loans, Average Recorded Investment, With no related allowance recorded	108,959	71,154	93,254	70,081
Impaired Loans, Interest Income Recognized, With no related allowance recorded	312	321	811	714
Impaired Loans, Average Recorded Investment, With an allowance recorded	13,408	14,046	14,595	10,416
Impaired Loans, Interest Income Recognized, With an allowance recorded	89	122	363	360
Impaired Loans, Average Recorded Investment	122,367	85,200	107,849	80,497
Impaired Loans, Interest Income Recognized	401	443	1,174	1,074
Other Commercial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	55,022		55,022		46,064
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	58,785		58,785		48,308
Impaired Loans, Recorded Investment, With an allowance recorded	70,344		70,344		43,774
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	80,415		80,415		46,188
Impaired Loans, Related Allowance	21,890		21,890		13,441
Impaired Loans, Recorded Investment	125,366		125,366		89,838
Impaired Loans, Unpaid Principal Balance	139,200		139,200		94,496
Impaired Loans, Related Allowance	21,890		21,890		13,441
Impaired Loans, Average Recorded Investment, With no related allowance recorded	57,317	45,028	55,891	37,805
Impaired Loans, Interest Income Recognized, With no related allowance recorded	306	1,221	895	1,446
Impaired Loans, Average Recorded Investment, With an allowance recorded	72,835	33,195	65,142	34,755
Impaired Loans, Interest Income Recognized, With an allowance recorded	216	42	1,410	270
Impaired Loans, Average Recorded Investment	130,152	78,223	121,033	72,560
Impaired Loans, Interest Income Recognized	522	1,263	2,305	1,716
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	20,873		20,873		22,747
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	22,546		22,546		24,404
Impaired Loans, Recorded Investment, With an allowance recorded	13,743		13,743		12,066
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	15,082		15,082		12,801
Impaired Loans, Related Allowance	1,659		1,659		3,431
Impaired Loans, Recorded Investment	34,616		34,616		34,813
Impaired Loans, Unpaid Principal Balance	37,628		37,628		37,205
Impaired Loans, Related Allowance	1,659		1,659		3,431
Impaired Loans, Average Recorded Investment, With no related allowance recorded	19,553	27,214	19,634	26,737
Impaired Loans, Interest Income Recognized, With no related allowance recorded	74	170	206	406
Impaired Loans, Average Recorded Investment, With an allowance recorded	15,225	8,579	15,186	9,129
Impaired Loans, Interest Income Recognized, With an allowance recorded	16	52	89	77
Impaired Loans, Average Recorded Investment	34,778	35,793	34,820	35,866
Impaired Loans, Interest Income Recognized	90	222	295	483
Consumer [Member] | Bankcard [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	0		0		0
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	0		0		0
Impaired Loans, Recorded Investment, With an allowance recorded	0		0		0
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	0		0		0
Impaired Loans, Related Allowance	0		0		0
Impaired Loans, Recorded Investment	0		0		0
Impaired Loans, Unpaid Principal Balance	0		0		0
Impaired Loans, Related Allowance	0		0		0
Impaired Loans, Average Recorded Investment, With an allowance recorded	0	0	0	0
Impaired Loans, Interest Income Recognized, With an allowance recorded	0	0	0	0
Impaired Loans, Average Recorded Investment	0	0	0	0
Impaired Loans, Interest Income Recognized	0	0	0	0
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, Recorded Investment, With no related allowance recorded	16		16		36
Impaired Loans, Unpaid Principal Balance, With no related allowance recorded	16		16		36
Impaired Loans, Recorded Investment, With an allowance recorded	0		0		0
Impaired Loans, Unpaid Principal Balance, With an allowance recorded	0		0		0
Impaired Loans, Related Allowance	0		0		0
Impaired Loans, Recorded Investment	16		16		36
Impaired Loans, Unpaid Principal Balance	16		16		36
Impaired Loans, Related Allowance	0		0		$ 0
Impaired Loans, Average Recorded Investment, With an allowance recorded	0	0	0	0
Impaired Loans, Interest Income Recognized, With an allowance recorded	0	0	0	0
Impaired Loans, Average Recorded Investment	25	35	29	32
Impaired Loans, Interest Income Recognized	$ 0	$ 0	$ 0	$ 0

XML

Allowance for Credit Losses - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
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			90 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	$ 43,000	$ 1,130,000	$ 415,000	$ 160,000
Reserve for lending-related commitments	$ 804,000		$ 804,000		$ 1,044,000
Closed-End Retail Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of days delinquent from contractual due date			120 days
Open-End Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Number of days delinquent from contractual due date			180 days

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Allowance for Credit Losses - Schedule of Allowance for Loan Losses and Carrying Amount of Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	$ 72,983		$ 72,771	$ 75,726	$ 75,726
Charge-offs	6,357		23,564		36,180
Recoveries	1,021		4,290		8,716
Provision	7,279	$ 6,988	21,429	18,690	24,509
Allowance for Loan Losses Ending balance	74,926		74,926		72,771
Allowance for Loan Losses, individually evaluated for impairment	26,746		26,746		23,417
Allowance for Loan Losses, collectively evaluated for impairment	48,180		48,180		49,354
Financing receivables	13,156,854		13,156,854		10,356,719
Financing receivables, individually evaluated for impairment	180,120		180,120		124,820
Financing receivables, collectively evaluated for impairment	12,748,980		12,748,980		10,060,303
Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses	0		0		0
Financing receivables	227,754		227,754		171,596
Construction & Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	7,514		10,606	18,205	18,205
Charge-offs	54		2,576		2,659
Recoveries	89		705		433
Provision	452		(734)		(5,373)
Allowance for Loan Losses Ending balance	8,001		8,001		10,606
Allowance for Loan Losses, individually evaluated for impairment	488		488		3,206
Allowance for Loan Losses, collectively evaluated for impairment	7,513		7,513		7,400
Financing receivables	1,599,632		1,599,632		1,255,738
Financing receivables, individually evaluated for impairment	16,879		16,879		8,152
Financing receivables, collectively evaluated for impairment	1,558,653		1,558,653		1,221,006
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		0
Financing receivables	24,100		24,100		26,580
Allowance for Estimated Imprecision [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	760		347	104	104
Charge-offs	0		0		0
Recoveries	0		0		0
Provision	(609)		(196)		243
Allowance for Loan Losses Ending balance	151		151		347
Allowance for Loan Losses, individually evaluated for impairment	0		0		0
Allowance for Loan Losses, collectively evaluated for impairment	151		151		347
Financing receivables	0		0		0
Financing receivables, individually evaluated for impairment	0		0		0
Financing receivables, collectively evaluated for impairment	0		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		0
Financing receivables	0		0		0
Commercial Real Estate [Member] | Owner-Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	5,129		5,273	3,637	3,637
Charge-offs	518		1,433		5,281
Recoveries	397		1,590		3,071
Provision	230		(192)		3,846
Allowance for Loan Losses Ending balance	5,238		5,238		5,273
Allowance for Loan Losses, individually evaluated for impairment	923		923		815
Allowance for Loan Losses, collectively evaluated for impairment	4,315		4,315		4,458
Financing receivables	1,364,757		1,364,757		1,049,885
Financing receivables, individually evaluated for impairment	32,888		32,888		18,976
Financing receivables, collectively evaluated for impairment	1,297,668		1,297,668		1,005,999
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		0
Financing receivables	34,201		34,201		24,910
Commercial Real Estate [Member] | Nonowner-Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	7,099		6,883	5,309	5,309
Charge-offs	0		295		419
Recoveries	168		198		675
Provision	(472)		9		1,318
Allowance for Loan Losses Ending balance	6,795		6,795		6,883
Allowance for Loan Losses, individually evaluated for impairment	1,786		1,786		2,524
Allowance for Loan Losses, collectively evaluated for impairment	5,009		5,009		4,359
Financing receivables	4,686,183		4,686,183		3,425,453
Financing receivables, individually evaluated for impairment	25,220		25,220		26,835
Financing receivables, collectively evaluated for impairment	4,537,792		4,537,792		3,323,117
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		0
Financing receivables	123,171		123,171		75,501
Other Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	37,287		33,087	31,328	31,328
Charge-offs	4,854		14,883		20,430
Recoveries	156		821		3,452
Provision	8,782		22,346		18,737
Allowance for Loan Losses Ending balance	41,371		41,371		33,087
Allowance for Loan Losses, individually evaluated for impairment	21,890		21,890		13,441
Allowance for Loan Losses, collectively evaluated for impairment	19,481		19,481		19,646
Financing receivables	1,757,741		1,757,741		1,613,437
Financing receivables, individually evaluated for impairment	89,559		89,559		56,091
Financing receivables, collectively evaluated for impairment	1,636,037		1,636,037		1,527,479
Other Commercial [Member] | Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses	0		0		0
Financing receivables	32,145		32,145		29,867
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	12,479		13,770	15,148	15,148
Charge-offs	299		2,331		4,597
Recoveries	60		352		639
Provision	(1,385)		(936)		2,580
Allowance for Loan Losses Ending balance	10,855		10,855		13,770
Allowance for Loan Losses, individually evaluated for impairment	1,659		1,659		3,431
Allowance for Loan Losses, collectively evaluated for impairment	9,196		9,196		10,339
Financing receivables	3,050,868		3,050,868		2,403,437
Financing receivables, individually evaluated for impairment	15,574		15,574		14,766
Financing receivables, collectively evaluated for impairment	3,021,173		3,021,173		2,373,969
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		0
Financing receivables	14,121		14,121		14,702
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses Beginning balance	2,715		2,805	$ 1,995	1,995
Charge-offs	632		2,046		2,794
Recoveries	151		624		446
Provision	281		1,132		3,158
Allowance for Loan Losses Ending balance	2,515		2,515		2,805
Allowance for Loan Losses, individually evaluated for impairment	0		0		0
Allowance for Loan Losses, collectively evaluated for impairment	2,515		2,515		2,805
Financing receivables	697,673		697,673		608,769
Financing receivables, individually evaluated for impairment	0		0		0
Financing receivables, collectively evaluated for impairment	697,657		697,657		608,733
Consumer [Member] | Loans Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses	0		0		0
Financing receivables	$ 16		$ 16		$ 36

XML

Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Goodwill not subject to amortization	$ 1,487,607	$ 863,767
Community Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill not subject to amortization	1,466,152	863,767
Mortgage Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill not subject to amortization	21,455	0
Core Deposit Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	98,358	69,635
Accumulated Amortization	(52,062)	(46,681)
Core Deposit Intangible Assets [Member] | Community Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	98,358	69,635
Accumulated Amortization	(52,062)	$ (46,681)
Core Deposit Intangible Assets [Member] | Mortgage Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	0
Accumulated Amortization	0
George Mason Trade Name Intangible [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,230
George Mason Trade Name Intangible [Member] | Community Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	0
George Mason Trade Name Intangible [Member] | Mortgage Banking [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,230

XML

Intangible Assets - Reconciliation of Goodwill (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 863,767
Goodwill, Ending Balance	1,487,607
Bank of Georgetown [Member]
Goodwill [Line Items]
Addition to goodwill	1,327
Cardinal Financial Corporation [Member]
Goodwill [Line Items]
Addition to goodwill	622,513
Community Banking [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	863,767
Goodwill, Ending Balance	1,466,152
Community Banking [Member] | Bank of Georgetown [Member]
Goodwill [Line Items]
Addition to goodwill	1,327
Community Banking [Member] | Cardinal Financial Corporation [Member]
Goodwill [Line Items]
Addition to goodwill	601,058
Mortgage Banking [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	0
Goodwill, Ending Balance	21,455
Mortgage Banking [Member] | Bank of Georgetown [Member]
Goodwill [Line Items]
Addition to goodwill	0
Mortgage Banking [Member] | Cardinal Financial Corporation [Member]
Goodwill [Line Items]
Addition to goodwill	$ 21,455

XML

Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Intangible Liability Disclosure [Abstract]
Amortization expense on intangible assets	$ 2,240	$ 1,122	$ 5,381	$ 2,786

XML

Intangible Assets - Schedule of Anticipated Amortization Expense (Detail) $ in Thousands	Sep. 30, 2017 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2017	$ 7,772
2018	8,039
2019	7,015
2020	6,309
2021 and thereafter	$ 22,542

XML

Short-Term Borrowings - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Short-term Debt [Line Items]
Unused lines of credit	$ 264,000,000
Federal funds purchased	25,800,000	$ 22,235,000
Repurchase agreements	316,236,000
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)	9 Months Ended
	Sep. 30, 2017 USD ($) Trust	Jun. 30, 2017 USD ($)	Apr. 21, 2017 USD ($)	Dec. 31, 2016 USD ($)
Debt Instrument [Line Items]
Unused borrowing amount	$ 3,724,772,000
FHLB advances	$ 1,272,115,000			$ 897,707,000
FHLB advances, weighted-average interest rate	1.43%
FHLB advances, maximum maturity period	8 years
Overnight funds	$ 200,000,000
Acquisition accounting adjustment to fair value, interest rate	1.27%
Number of statutory business trusts | Trust	15
Outstanding balances of debentures	$ 242,131,000			$ 224,319,000
Maximum time to defer payment of interest on subordinate debt	5 years
Trust Preferred Securities limit percentage	25.00%
Maximum [Member]
Debt Instrument [Line Items]
Risk based assets		$ 15,000,000,000
Cardinal Financial Corporation [Member] | Minimum [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	15

XML

Long -Term Borrowings - Schedule of Maturities of FHLB Borrowings (Detail) $ in Thousands	Sep. 30, 2017 USD ($)
Debt Disclosure [Abstract]
2017	$ 815,000
2018	131,776
2019	187,809
2020	42,247
2021 and thereafter	95,283
Total	$ 1,272,115

XML

Commitments and Contingent Liabilities - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Loan commitments outstanding	$ 4,118,868,000	$ 2,823,396,000
Loan commitments expiry period	1 year
George Mason [Member]
Loss Contingencies [Line Items]
Aggregate available reserve amount under specified circumstances	$ 575,000
Commitments to Extend Credit [Member] | George Mason [Member] | Short-term Contract with Customer [Member]
Loss Contingencies [Line Items]
Additional commitments to extend credit	407,610,000
Commercial Letters of Credit [Member]
Loss Contingencies [Line Items]
Letters of credit issued	0	9,000
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Letters of credit issued	$ 148,742,000	$ 121,584,000

XML

Derivative Financial Instruments - Schedule of Notional Amount and Fair Value of Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Asset derivatives, notional amount	$ 506,850
Asset derivatives designated as hedging instruments	40	$ 24
Liability derivatives, notional amount	192,794
Asset derivatives not designated as hedging instruments	7,528	2,267
Total asset derivatives	7,568	2,291
Liability derivatives designated as hedging instruments	480	338
Liability derivatives not designated as hedging instruments	548	2,267
Total liability derivatives	1,028	2,605
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	14,762
Liability derivatives, notional amount	76,869
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	492,088
Liability derivatives, notional amount	115,925
Other Assets [Member] | TBA Mortgage Backed Securities [Member]
Derivative [Line Items]
Asset derivatives not designated as hedging instruments	501	0
Other Assets [Member] | Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Asset derivatives not designated as hedging instruments	7,027	0
Other Assets [Member] | Not Designated as Hedging Instrument [Member] | TBA Mortgage Backed Securities [Member]
Derivative [Line Items]
Asset derivatives, notional amount	322,500
Other Assets [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Asset derivatives, notional amount	169,588
Other Liabilities [Member] | Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Liability derivatives not designated as hedging instruments	291	0
Other Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Liability derivatives, notional amount	65,862
Interest Rate Swap Contracts [Member] | Other Assets [Member]
Derivative [Line Items]
Asset derivatives not designated as hedging instruments	0	2,267
Interest Rate Swap Contracts [Member] | Other Assets [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Asset derivatives, notional amount	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	40	24
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	14,762
Interest Rate Swap Contracts [Member] | Other Liabilities [Member]
Derivative [Line Items]
Liability derivatives not designated as hedging instruments	0	2,267
Interest Rate Swap Contracts [Member] | Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives, notional amount	0
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	480	338
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	76,869
Forward Loan Sale Commitments [Member] | Other Liabilities [Member]
Derivative [Line Items]
Liability derivatives not designated as hedging instruments	257	$ 0
Forward Loan Sale Commitments [Member] | Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability derivatives, notional amount	$ 50,063

XML

Derivative Financial Instruments - Schedule of Derivative Financial Instruments on Statement of Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative [Line Items]
Derivatives in hedging relationships	$ (4,826)	$ (385)	$ (1,633)	$ 353
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivatives in hedging relationships	(208)	(385)	(648)	353
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	(208)	(385)	(648)	353
Designated as Hedging Instrument [Member] | Other Income [Member] | Forward Loan Sale Commitments [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Derivatives in hedging relationships			0	0
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivatives not designated as hedging instruments	(4,618)	0	(985)	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	123	0	2,907	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	4,484	0	3,465	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	$ 257	$ 0	$ 427	$ 0

XML

Fair Value Measurements - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Discount rates utilized, minimum	3.25%
Discount rates utilized, maximum	6.00%
Amount of decrease in fair value of securities	$ 5,741,000
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	0.27%
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	0.40%
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	0.27%
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	0.40%
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%
Trust Preferred Collateralized Debt Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Decrease in fair value of securities	18.00%
Increase in discount rates, basis point	2.00%

XML

Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	$ 10,480	$ 13,828
Total available for sale securities	1,649,634	1,259,214
Loans held for sale	315,031	8,445
Derivative financial assets	7,568	2,291
Derivative financial liabilities	1,028	2,605
Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	1,639,154	1,245,386
Available for sale equity securities	10,480	13,828
Total available for sale securities	1,649,634	1,259,214
Loans held for sale	311,186
Derivative financial assets	7,568
Derivative financial liabilities	1,028
Fair Value, Measurements, Recurring [Member] | Interest Rate Lock Commitments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	7,027
Derivative financial liabilities	291
Fair Value, Measurements, Recurring [Member] | TBA Mortgage Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	501
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	115,866	95,786
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	115,866	95,786
State and Political Subdivisions [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	305,141	192,812
State and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	305,141	192,812
Residential Mortgage-Backed Securities, Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	714,700	584,096
Residential Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	714,700	584,096
Residential Mortgage-Backed Securities, Non-agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	5,846	7,043
Residential Mortgage-Backed Securities, Non-agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	5,846	7,043
Asset-Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	13,429	217
Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	13,429	217
Commercial Mortgage-Backed Securities, Agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	420,792	305,341
Commercial Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	420,792	305,341
Trust Preferred Collateralized Debt Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	31,659	33,552
Trust Preferred Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	31,659	33,552
Single Issue Trust Preferred Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	12,467	11,477
Single Issue Trust Preferred Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	12,467	11,477
Corporate Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	19,254	15,062
Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	19,254	15,062
Financial Services Industry [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	3,016	10,735
Other Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	1,214	1,273
Interest Rate Swap Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	40	2,291
Derivative financial liabilities	480	2,605
Forward Loan Sale Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial liabilities	257
Equity Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	6,250	1,820
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	7,865	4,465
Loans held for sale	0	0
Derivative financial assets	501	0
Derivative financial liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Available for sale equity securities	7,865	4,465
Total available for sale securities	7,865	4,465
Loans held for sale	0
Derivative financial assets	501
Derivative financial liabilities	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
Derivative financial liabilities	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 assets	501
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | State and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Residential Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Residential Mortgage-Backed Securities, Non-agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Commercial Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Trust Preferred Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Single Issue Trust Preferred Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	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	401	1,372
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	1,214	1,273
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Interest Rate Swap Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	0	0
Derivative financial liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Forward Loan Sale Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial liabilities	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	6,250	1,820
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	1,610,110	1,221,197
Loans held for sale	3,845	8,445
Derivative financial assets	40	2,291
Derivative financial liabilities	1,028	2,605
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	1,607,495	1,211,834
Available for sale equity securities	2,615	9,363
Total available for sale securities	1,610,110	1,221,197
Loans held for sale	0
Derivative financial assets	40
Derivative financial liabilities	1,028
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
Derivative financial liabilities	291
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 assets	0
Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	115,866	95,786
Significant Other Observable Inputs (Level 2) [Member] | State and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	305,141	192,812
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]
Available for sale debt securities	714,700	584,096
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]
Available for sale debt securities	5,846	7,043
Significant Other Observable Inputs (Level 2) [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	13,429	217
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]
Available for sale debt securities	420,792	305,341
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]
Available for sale debt securities	0	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]
Available for sale debt securities	12,467	11,477
Significant Other Observable Inputs (Level 2) [Member] | Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	19,254	15,062
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	2,615	9,363
Significant Other Observable Inputs (Level 2) [Member] | Other Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	0	0
Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Swap Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	40	2,291
Derivative financial liabilities	480	2,605
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 liabilities	257
Significant Other Observable Inputs (Level 2) [Member] | Equity Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	0	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total available for sale securities	31,659	33,552
Loans held for sale	311,186	0
Derivative financial assets	7,027	0
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 debt securities	31,659	33,552
Available for sale equity securities	0	0
Total available for sale securities	31,659	33,552
Loans held for sale	311,186
Derivative financial assets	7,027
Derivative financial liabilities	0
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	7,027
Derivative financial liabilities	0
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 assets	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]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | State and Political Subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Residential Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Residential Mortgage-Backed Securities, Non-agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Commercial Mortgage-Backed Securities, Agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Trust Preferred Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	31,659	33,552
Significant Unobservable Inputs (Level 3) [Member] | Single Issue Trust Preferred Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale debt securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Financial Services Industry [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Other Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Interest Rate Swap Contracts [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial assets	0	0
Derivative financial liabilities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Forward Loan Sale Commitments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative financial liabilities	0
Significant Unobservable Inputs (Level 3) [Member] | Equity Mutual Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale equity securities	$ 0	$ 0

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	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Trust Preferred Collateralized Debt Obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance, beginning of period	$ 33,552	$ 34,686
Sales	(8,050)	0
Included in earnings (or changes in net assets)	9	0
Included in other comprehensive income	6,148	(1,134)
Balance, end of period	31,659	33,552
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	0	0
Acquired in Cardinal merger	271,301	0
Originations	1,644,943	0
Sales	(1,639,737)	0
Included in earnings (or changes in net assets)	41,929	0
Transfers in and/or out of Level 3	(7,250)	0
Balance, end of period	311,186	0
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	0	0
Acquired in Cardinal merger	10,393	0
Transfers in and/or out of Level 3	(3,366)	0
Balance, end of period	7,027	0
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	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017
Mortgage Banking [Member]
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]
Income from mortgage banking activities	$ (5,090)	$ (7,529)

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	Sep. 30, 2017	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Loans held for sale, unpaid principal balance	$ 303,953	$ 0
Loans held for sale, fair value	311,186	0
Loans held for sale, fair value over/(under) unpaid principal balance	$ 7,233	$ 0

XML

Fair Value Measurements - Summary of Financial Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
YTD Losses, Impaired Loans	$ 9,045	$ 5,119
YTD Losses, OREO	2,904	2,086
Impaired Loans	105,900	80,505
OREO	26,826	31,510
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans	0	0
OREO	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans	74,852	27,609
OREO	26,743	31,510
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans	31,048	52,896
OREO	$ 83	$ 0

XML

Fair Value Measurements - Summary of Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 1,747,037	$ 1,434,527	$ 1,118,506	$ 857,335
Securities available for sale	1,649,634	1,259,214
Securities held to maturity	20,335	33,258
Other securities	166,756	111,166
Loans held for sale	315,031	8,445
Loans	13,140,468	10,341,137
Derivative financial assets	7,568	2,291
Deposits	13,875,297	10,796,867
Derivative financial liabilities	1,028	2,605
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,747,037	1,434,527
Securities available for sale	1,649,634	1,259,214
Securities held to maturity	20,335	33,258
Other securities	166,756	111,166
Loans held for sale	315,031	8,445
Loans	13,065,542	10,268,366
Derivative financial assets	7,568	2,291
Deposits	13,875,297	10,796,867
Short-term borrowings	492,036	209,551
Long-term borrowings	1,364,246	1,172,026
Derivative financial liabilities	1,028	2,605
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,747,037	1,434,527
Securities available for sale	1,649,634	1,259,214
Securities held to maturity	19,909	31,178
Other securities	158,418	105,608
Loans held for sale	315,031	8,445
Loans	12,550,352	10,122,486
Derivative financial assets	7,568	2,291
Deposits	13,859,205	10,785,294
Short-term borrowings	492,036	209,551
Long-term borrowings	1,328,753	1,142,782
Derivative financial liabilities	1,028	2,605
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	7,865	4,465
Securities held to maturity	0	0
Other securities	0	0
Loans held for sale	0	0
Loans	0	0
Derivative financial assets	501	0
Deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Derivative financial liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1,747,037	1,434,527
Securities available for sale	1,610,110	1,221,197
Securities held to maturity	16,889	28,158
Other securities	0	0
Loans held for sale	3,845	8,445
Loans	0	0
Derivative financial assets	40	2,291
Deposits	13,859,205	10,785,294
Short-term borrowings	492,036	209,551
Long-term borrowings	1,328,753	1,142,782
Derivative financial liabilities	1,028	2,605
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	31,659	33,552
Securities held to maturity	3,020	3,020
Other securities	158,418	105,608
Loans held for sale	311,186	0
Loans	12,550,352	10,122,486
Derivative financial assets	7,027	0
Deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Derivative financial liabilities	$ 0	$ 0

XML

Stock Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	May 18, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares of stock, option plan, maximum	1,700,000
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				253,417
Recognition of compensation expense		$ 909	$ 720	$ 2,589	$ 2,050
Number of share available for grant for prior plans		0		0
Maximum term for awards granted (years)				10 years
Shares issued related stock option exercises				163,562	248,677
Total intrinsic value of options exercised				$ 3,078	$ 4,670
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted				89,475
Vesting period				4 years

XML

Stock Based Compensation - Summary of Stock Option Plans (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Schedule Of Stock Options [Line Items]
Shares, Outstanding, Beginning balance	1,411,735
Shares, Granted	253,417
Shares, Exercised	(163,562)	(248,677)
Shares, Forfeited or expired	(2,962)
Shares, Outstanding, Ending balance	1,652,230
Shares, Exercisable at September 30, 2017	1,138,309
Aggregate Intrinsic Value, Outstanding at September 30, 2017	$ 12,602
Aggregate Intrinsic Value, Exercisable at September 30, 2017	$ 11,964
Weighted Average Remaining Contractual Term, Outstanding at June 30, 2017	5 years 9 months 18 days
Weighted Average Remaining Contractual Term, Exercisable at June 30, 2017	4 years 6 months
Weighted Average Exercise Price, Outstanding, Beginning balance	$ 28.05
Weighted Average Exercise Price, Granted	45.27
Weighted Average Exercise Price, Exercised	20.93
Weighted Average Exercise Price, Forfeited or expired	38.81
Weighted Average Exercise Price, Outstanding, Ending balance	30.76
Weighted Average Exercise Price, Exercisable	$ 26.64
Cardinal Financial Corporation [Member]
Schedule Of Stock Options [Line Items]
Shares, Assumed in Cardinal merger	153,602
Weighted Average Exercise Price, Exercisable	$ 21.47

XML

Stock Based Compensation - Status of United's Nonvested Stock Option Awards (Detail)	9 Months Ended
	Sep. 30, 2017 $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Shares, Nonvested, Beginning balance | shares	430,278
Shares, Granted | shares	253,417
Shares, Vested | shares	(168,274)
Shares, Forfeited or expired | shares	(1,500)
Shares, Nonvested, Ending balance | shares	513,921
Weighted-Average Grant Date Fair Value Per Share, Nonvested Beginning balance | $ / shares	$ 6.84
Weighted-Average Grant Date Fair Value Per Share, Granted | $ / shares	8.85
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	6.64
Weighted-Average Grant Date Fair Value Per Share, Forfeited or expired | $ / shares	8.85
Weighted-Average Grant Date Fair Value Per Share, Nonvested Ending balance | $ / shares	$ 7.89

XML

Stock Based Compensation - Changes to United's Restricted Common Shares (Detail) - Restricted Stock [Member]	9 Months Ended
	Sep. 30, 2017 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning balance | shares	137,268
Shares, Granted | shares	89,475
Shares, Vested | shares	(53,950)
Shares, Forfeited | shares	(420)
Number of Shares, Outstanding, Ending balance | shares	172,373
Weighted-Average Grant Date Fair Value Per Share, Outstanding, Beginning balance | $ / shares	$ 33.61
Weighted-Average Grant Date Fair Value Per Share, Granted | $ / shares	45.27
Weighted-Average Grant Date Fair Value Per Share, Vested | $ / shares	32.23
Weighted-Average Grant Date Fair Value Per Share, Forfeited | $ / shares	45.30
Weighted-Average Grant Date Fair Value Per Share, Outstanding, Ending balance | $ / shares	$ 40.07

XML

Employee Benefit Plans - Additional Information (Detail) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2017 USD ($)
Retirement Benefits [Abstract]
Employer discretionary contribution amount	$ 10,000
Net periodic pension cost decline in expense	252	$ 748
Unrecognized actuarial gains (losses), before tax	53,991	53,991
Unrecognized actuarial gains (losses), net of tax	34,014	34,014
Amortization expected to be recognized	$ 4,411	4,411
Amortization expected to be recognized, net of tax		$ 2,779

XML

Employee Benefit Plans - Net Periodic Pension Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 574	$ 614	$ 1,705	$ 1,829
Interest cost	1,293	1,471	3,837	4,383
Expected return on plan assets	(2,072)	(2,034)	(6,148)	(6,058)
Recognized net actuarial loss	1,111	1,161	3,298	3,458
Net periodic pension (benefit) cost	$ 906	$ 1,212	$ 2,692	$ 3,612
Weighted-Average Assumptions:
Discount rate	4.49%	4.75%	4.49%	4.75%
Expected return on assets	7.00%	7.25%	7.00%	7.25%
Rate of compensation increase	3.00%	3.00%	3.00%	3.00%
Prior to Age 45 [Member]
Weighted-Average Assumptions:
Rate of compensation increase	3.50%	3.50%	3.50%	3.50%

XML

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Estimate of unrecognized tax benefits, reasonable possible	United cannot reasonably estimate the amount of tax benefits it may recognize over the next 12 months.
Liability of unrecognized tax benefits	$ 2,405
Accrued interest related to uncertain tax positions	$ 548	$ 792

XML

Comprehensive Income - Components of Total Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income	$ 56,738	$ 41,479	$ 132,606	$ 107,977
AFS securities with OTTI charges during the period	0	0	(60)	(77)
Related income tax effect	0	0	22	28
Less: OTTI charges recognized in net income	0	0	60	33
Related income tax benefit	0	0	(22)	(12)
Reclassification of previous noncredit OTTI to credit OTTI	0	0	0	415
Related income tax benefit	0	0	0	(150)
Net unrealized (losses) gains on AFS securities with OTTI	0	0	0	237
Change in net unrealized gain on AFS securities arising during the period	3,584	(7,599)	14,846	12,356
Related income tax effect	(1,326)	2,735	(5,493)	(4,489)
Net reclassification adjustment for (gains) losses included in net income	(467)	(1)	(1,444)	(251)
Related income tax expense (benefit)	173	0	534	91
Total AFS securities - all other	1,964	(4,865)	8,443	7,707
Net effect of AFS securities on other comprehensive income	1,964	(4,865)	8,443	7,944
Accretion on the unrealized loss for securities transferred from AFS to the HTM investment portfolio prior to call or maturity	2	2	6	6
Related income tax expense	0	0	(2)	(2)
Net effect of HTM securities on other comprehensive income	2	2	4	4
Pension plan:
Recognized net actuarial loss	1,111	1,161	3,298	3,458
Related income tax benefit	(394)	(384)	(1,191)	(1,223)
Net effect of change in pension plan asset on other comprehensive income	717	777	2,107	2,235
Net current-period other comprehensive income, net of tax	2,683	(4,086)	10,554	10,183
Comprehensive income, net of tax	$ 59,421	$ 37,393	$ 143,160	$ 118,160

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Comprehensive Income - Components of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at January 1, 2017			$ 2,235,747
Net current-period other comprehensive income, net of tax	$ 2,683	$ (4,086)	10,554	$ 10,183
Balance at September 30, 2017	3,263,843		3,263,843
Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at January 1, 2017			(34,369)
Other comprehensive income before reclassification			0
Amounts reclassified from accumulated other comprehensive income			2,107
Net current-period other comprehensive income, net of tax			2,107
Balance at September 30, 2017	(32,262)		(32,262)
Unrealized Gains/Losses on AFS Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at January 1, 2017			(10,297)
Other comprehensive income before reclassification			9,353
Amounts reclassified from accumulated other comprehensive income			(910)
Net current-period other comprehensive income, net of tax			8,443
Balance at September 30, 2017	(1,854)		(1,854)
Accumulated Unrealized Loss On Securities Available For Sale Transferred To Held To Maturity [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at January 1, 2017			(51)
Other comprehensive income before reclassification			4
Amounts reclassified from accumulated other comprehensive income			0
Net current-period other comprehensive income, net of tax			4
Balance at September 30, 2017	(47)		(47)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at January 1, 2017			(44,717)
Other comprehensive income before reclassification			9,357
Amounts reclassified from accumulated other comprehensive income			1,197
Net current-period other comprehensive income, net of tax			10,554
Balance at September 30, 2017	$ (34,163)		$ (34,163)

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Comprehensive Income - Reclassifications Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Available for sale ("AFS") securities:
Net reclassification adjustment for losses (gains) included in net income	$ 467	$ 1	$ 5,214	$ 251
Income before income taxes	84,574	60,325	199,962	161,080
Related income tax effect	(27,836)	(18,846)	(67,356)	(53,103)
Net income	56,738	41,479	132,606	107,977
Pension plan:
Recognized net actuarial loss	1,111	1,161	3,298	3,458
Income before income taxes	84,574	60,325	199,962	161,080
Related income tax effect	(27,836)	(18,846)	(67,356)	(53,103)
Net income	$ 56,738	$ 41,479	132,606	$ 107,977
Reclassification out of Accumulated Other Comprehensive Income [Member]
Available for sale ("AFS") securities:
Net income			1,197
Pension plan:
Net income			1,197
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			(1,444)
Income before income taxes			(1,444)
Related income tax effect			534
Net income			(910)
Pension plan:
Income before income taxes			(1,444)
Related income tax effect			534
Net income			(910)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Available for sale ("AFS") securities:
Income before income taxes			3,298
Related income tax effect			(1,191)
Net income			2,107
Pension plan:
Recognized net actuarial loss			3,298
Income before income taxes			3,298
Related income tax effect			(1,191)
Net income			$ 2,107

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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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Distributed earnings allocated to common stock	$ 34,587	$ 25,174	$ 95,871	$ 73,242
Undistributed earnings allocated to common stock	22,065	16,234	36,518	34,545
Net earnings allocated to common shareholders	$ 56,652	$ 41,408	$ 132,389	$ 107,787
Average common shares outstanding	104,760,153	76,218,573	95,040,664	72,413,246
Equivalents from stock options	307,969	429,200	409,962	333,117
Average diluted shares outstanding	105,068,122	76,647,773	95,450,626	72,746,363
Earnings per basic common share	$ 0.54	$ 0.54	$ 1.39	$ 1.49
Earnings per diluted common share	$ 0.54	$ 0.54	$ 1.39	$ 1.48

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Variable Interest Entities - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2017 Trust
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]
Number of statutory business trusts	15
Percentage of equity shares of each trust owned by the company	100.00%

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Variable Interest Entities - Information Related to Statutory Trusts (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($)
Century Trust [Member]
Variable Interest Entity [Line Items]
Issuance Date	Mar. 23, 2000
Amount of Capital Securities Issued	$ 8,800
Interest Rate	10.875% Fixed
Maturity Date	Mar. 08, 2030
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

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Variable Interest Entities - Summary of Quantitative Information Related to Significant Involvement in Unconsolidated Variable Interest Entities (Detail) - Trust Preferred Securities [Member] - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Aggregate Assets	$ 266,560	$ 240,668
Aggregate Liabilities	257,605	232,583
Risk Of Loss	$ 8,955	$ 8,085

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Segment Information - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2017 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		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net interest income	$ 150,276	$ 111,069	$ 394,141	$ 312,078
Provision for loans losses	7,279	6,988	21,429	18,690	$ 24,509
Other income	38,229	19,021	98,881	53,380
Other expense	96,652	62,777	271,631	185,688
Income taxes	27,836	18,846	67,356	53,103
Net income	56,738	41,479	132,606	107,977
Total assets (liabilities)	19,129,978	14,344,696	19,129,978	14,344,696
Average assets (liabilities)	18,927,785	14,159,569	17,187,644	13,104,398
Operating Segments [Member] | Community Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	152,886	113,033	401,044	317,835
Provision for loans losses	7,279	6,988	21,429	18,690
Other income	18,373	19,666	53,409	55,323
Other expense	74,553	63,009	215,935	186,322
Income taxes	29,490	19,729	73,214	55,580
Net income	59,937	42,973	143,875	112,566
Total assets (liabilities)	18,780,395	14,364,797	18,780,395	14,364,797
Average assets (liabilities)	18,620,035	14,182,202	17,020,928	13,125,973
Operating Segments [Member] | Mortgage Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	(36)		54
Provision for loans losses	0		0
Other income	19,936		42,329
Other expense	24,036		42,744
Income taxes	(1,332)		(39)
Net income	(2,804)		(322)
Total assets (liabilities)	350,483		350,483
Average assets (liabilities)	321,744		187,118
Other [Member]
Segment Reporting Information [Line Items]
Net interest income	(2,574)	(1,964)	(6,957)	(5,757)
Provision for loans losses	0	0	0	0
Other income	(80)	(645)	3,143	(1,943)
Other expense	(1,937)	(232)	12,952	(634)
Income taxes	(322)	(883)	(5,819)	(2,477)
Net income	(395)	(1,494)	(10,947)	(4,589)
Total assets (liabilities)	(900)	(20,101)	(900)	(20,101)
Average assets (liabilities)	$ (13,994)	$ (22,633)	$ (20,402)	$ (21,575)